Snow thrower and steering method thereof

The disclosure provides a snow thrower and a steering method thereof. The snow thrower includes a chassis, a wheel assembly, a working assembly, a power assembly and a battery assembly. The wheel assembly is connected with the chassis and includes wheels arranged at both sides of the chassis. The working assembly is connected with the chassis and includes an auger assembly and an impeller assembly. The auger assembly includes an auger and a auger housing at least partially accommodating the auger. The impeller assembly includes an impeller and an impeller housing at least partially accommodating the impeller. The power assembly includes a motor and is connected with the working assembly to drive the working assembly to work. The battery assembly is connected with the power assembly and the wheel assembly, and the battery assembly includes at least one battery.

TECHNICAL FIELD

The disclosure belongs to the technical field of the outdoor tools, particularly to a snow thrower and a steering method thereof.

BACKGROUND

Snow throwers are a kind of tool that may effectively remove snow in winter and save time and effort. Especially in some alpine regions, an effective use of snow throwers may greatly reduce manpower and improve efficiency.

Currently, most of the snow throwers on the market are powered by an engine, which are not environmentally friendly and have a lot of noise. An operation of these snow throwers is inconvenient, and wear between components is relatively large. Furthermore, most of the snow throwers that use lithium batteries are hand push snow throwers with low power. A snow removal efficiency is not very high, and a thickness of snow removal is limited. The conventional snow throwers also have a problem of unstable traveling, especially when encountering obstacles or places with large ups and downs, problems such as inclining and overturning are prone to occur, which causes the snow throwers to be damaged and cannot be used. In addition, the snow thrower needs to drive the traveling wheel to rotate through a complex deceleration structure, which occupies a large space and increases a volume of the snow thrower. Currently, the snow thrower further includes a complex transmission structure, and a transmission mode causes parts being easy to wear and reduces a duration life of the snow thrower.

SUMMARY

The disclosure provides a snow thrower and a steering method thereof. With the snow thrower and the steering method thereof of the disclosure, performances of the snow thrower may be improved and cost may be reduced.

The disclosure provides a snow thrower. The snow thrower includes a chassis, a wheel assembly, a working assembly, a power assembly and a battery assembly. The wheel assembly is coupled to the chassis and configured to support the snow thrower to enable the snow thrower to walk on a surface. The wheel assembly includes wheels arranged at both sides of the chassis. The working assembly is coupled to the chassis and includes an auger assembly and an impeller assembly. The auger assembly includes an auger and an auger housing at least partially accommodating the auger. The impeller assembly includes an impeller and an impeller housing at least partially accommodating the impeller. The power assembly includes a motor and the motor is coupled to impeller housing and configured to drive the working assembly to work. The battery assembly is configured to supply power to the power assembly and the wheel assembly, and the battery assembly includes at least one battery.

Optionally, the snow thrower further includes a first rotation shaft and a second rotation shaft. The first rotation shaft is connected with the auger housing, and the auger is connected on the first rotation shaft. The second rotation shaft is connected with the first rotation shaft, and the impeller is connected on the second rotation shaft.

Optionally, a movement gap is between the impeller and an inner side wall of the impeller housing, and the movement gap gradually increases along a rotation direction of the impeller.

Optionally, the motor is mounted on an upper portion of the impeller housing, and an output shaft of the motor is oriented facing the rear of the snow thrower.

Optionally, a center of gravity of the battery assembly is located on a central axis in a forward direction of the snow thrower.

Optionally, the wheel assembly further includes a wheel hub motor and a fixed part. An output shaft of the wheel hub motor is connected with the chassis, and the wheel is coupled to the wheel hub motor. The fixed part is arranged on the chassis, and the fixed part is connected with the output shaft.

Optionally, at least two wheel hub motors are provided, and each of the wheel hub motors is independently controlled.

Optionally, the snow thrower further includes a control board assembly. The control board assembly is fixed in the chassis, and configured to control the battery assembly, the power assembly and the wheel assembly.

Optionally, the snow thrower further includes a fan. The fan is connected with the second rotation shaft, and the fan is located in the chassis.

Optionally, the chassis includes a connecting surface, a fixed component and a main housing. The connecting surface is connected with the working assembly. The fixed component is connected with the working assembly and defines a gap with the connecting surface. The main housing is clamped in the gap and connected with the connecting surface and the fixed component.

Optionally, the snow thrower further includes a control assembly. The control assembly includes an operation console, a first speed adjustment lever and a second speed adjustment lever. The first speed adjustment lever is used to adjust a traveling speed and/or traveling direction of the wheel assembly and arranged on the operation console. The second speed adjustment lever is used to adjust a running speed of the working assembly and arranged on the operation console. Wherein, the first speed adjustment lever is arranged at a first angle with a first direction, the second speed adjustment lever is arranged at a second angle with a first direction, and the first direction is a direction parallel to a rotation axis of the wheel assembly.

Optionally, the control assembly includes a first trigger, a linkage shaft, a second trigger and an interlocking structure. The first trigger is used to realize a first function. The linkage shaft is connected with the first trigger. The second trigger is rotatably connected with the linkage shaft to realize a second function. The interlocking structure is arranged on the linkage shaft and connected with the second trigger.

Optionally, a display light is arranged on the operation console, and the display light comprises a flexible light bar.

Optionally, the snow thrower further includes a chute control assembly. The chute control assembly includes a chute, a rotation component, a connecting shaft, a second gear, a first gear and a rocking trigger. One end of the rotation component is connected with the chute. The connecting shaft is connected with the rotation component. The second gear is connected with the connecting shaft to drive the connecting shaft to rotate. The first gear is meshed with the second gear. One end of the rocking trigger is connected with the first gear, and the other end of the rocking trigger extends to an operation end of the snow thrower.

Optionally, the snow thrower further includes an adjustment device. The adjustment device at least includes an operation part, a connecting assembly, a first connecting rod and a second connecting rod. One end of the connecting assembly is connected with one end of the operation part. One end of the first connecting rod is rotatably connected with the connecting assembly. One end of the second connecting rod is rotatably connected with the first connecting rod.

Optionally, the snow thrower further includes a worm gear and a worm gear housing. The worm gear is sleeved on the first rotation shaft, and the second rotation shaft is meshed with the worm gear. The worm gear housing is provided with a first penetrating hole and a second penetrating hole. The worm gear is located in the first penetrating hole. One end of the second rotation shaft is located in the second penetrating hole, and the worm gear is meshed to the second rotation shaft in the worm gear housing.

Optionally, the motor is connected with the working assembly through a transmission assembly. The transmission assembly includes a first transmission wheel, a second transmission wheel, and a belt or a chain. The first transmission wheel is arranged on an output shaft of the motor. The second transmission wheel is connected with the second rotation shaft to drive the second rotation shaft to rotate. The belt or the chain is used to connect the first transmission wheel with the second transmission wheel.

Optionally, the snow thrower further includes a tensioning structure to tension the belt. The tensioning structure includes a mounting plate, a tensioning plate, a tensioning wheel, a first tensioning spring, a ratchet wheel, a ratchet pawl, and a second tensioning spring. The mounting plate is connected with the impeller housing. The tensioning plate is connected on the mounting plate. The tensioning wheel is arranged on the tensioning plate. One end of the first tensioning spring is connected with the tensioning plate, and the other end of the first tensioning spring is connected with a fixed base of the motor. The ratchet wheel is arranged on the tensioning plate. The ratchet pawl is arranged on the mounting plate. The second tensioning spring is arranged on the mounting plate. One end of the ratchet pawl is matched with the ratchet wheel, and the other end of the ratchet pawl is connected with the second tensioning spring.

Optionally, the motor is connected with the working assembly through a transmission assembly, and the transmission assembly includes a transmission housing and a sprocket assembly. The sprocket assembly is mounted inside the transmission housing, and integral with the transmission housing. The sprocket assembly includes a driving sprocket, a driven sprocket and a chain. The driving sprocket is rotatably mounted with one end inside the transmission housing and connected with the power assembly. The driven sprocket is rotatably mounted with the other end inside the transmission housing. The chain is mounted around an outside of the driving sprocket and the driven sprocket and the chain is meshed with the driving sprocket and the driven sprocket. The driving sprocket is in a transmission connection with the driven sprocket through the chain.

The disclosure further provides a steering method of the snow thrower. The snow thrower includes a chassis and a wheel assembly connected with the chassis. The wheel assembly includes a first wheel and a second wheel. The steering method includes: obtaining a current traveling speed of the snow thrower; sending a steering signal to the wheel assembly; comparing the current traveling speed of the snow thrower with a preset steering speed; and controlling the first wheel to rotate in a direction opposite to the traveling direction, and controlling the second wheel to decelerate to the preset steering speed if the current traveling speed of the snow thrower is greater than the preset steering speed, and enabling a final speed of the first wheel to be equal to the preset steering speed.

With the snow thrower and its steering method of the disclosure as described above, through using belts or chains for connection, a wear between components is reduced, there is no transmission gap, and the cost is low. Through arranging the motor and a chute base on the impeller housing at the same time, a larger accommodating space is provided for a battery cavity and the battery. Through setting the chute control assembly, a snow blowing direction of the snow thrower may be adjusted. Through arranging the rocking trigger and the transmission structure, the snow blowing direction of the impeller housing may be controlled simply and directly. With the snow thrower provided by the disclosure, a snow removal is more flexible and convenient, and the cost is reduced.

Of course, it is not necessary for any product of the disclosure to achieve all of the above-described advantages simultaneously.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the disclosure will be clearly and completely described below with reference to the accompanying figures in the embodiments of the disclosure. Obviously, the described embodiments are only some, but not all embodiments of the disclosure. Based on the embodiments of the disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of the disclosure.

Please refer toFIG.1andFIG.8. The disclosure provides a snow thrower. The snow thrower includes an auger assembly10, an impeller assembly20, a power assembly30, a battery assembly40, a wheel assembly50, a control assembly60and a chute control assembly70. Wherein, the auger assembly10and the impeller assembly20are a working assembly of the snow thrower1. The auger assembly10collects snow on ground into a first accommodating space, and twists the snow into the impeller assembly20through an auger101. An impeller201in the impeller assembly20throws the snow from the impeller housing200through rotation. Wherein, the power assembly30is connected with the auger assembly10and the impeller assembly20to drive the auger101and the impeller201to rotate. The battery assembly40is connected with the power assembly30, the wheel assembly50and the control assembly60to supply power to all electrical components in the snow thrower1. As used herein, the term “battery” or “battery assembly” encompasses the use of one or more batteries to power one or more components of an item of the snow thrower. The wheel assembly50is connected with the battery assembly40and the control assembly60for driving the snow thrower1to travel. The control assembly60is an operation end of the snow thrower1. The chute control assembly70is used to adjust a snow blowing direction. The snow thrower1further includes a chassis80, the battery assembly40is arranged on the chassis80, and the wheel assembly50is fixed on both sides of the chassis80.

Please refer toFIG.1,FIG.2,FIG.4andFIG.10. In an embodiment of the disclosure, the auger assembly10includes the auger101, an auger housing100and a snow shovel102. The auger housing100is arranged at an end of a working surface of the snow thrower1, and the auger housing100includes an arc surface100cand two side surfaces. The arc surface100ccovers an upper side of the auger101and an opposite side of the working surface of the auger101. The side surface includes a first side surface100aand a second side surface100b. The first side surface100aand the second side surface100bare perpendicular to a horizontal plane. The arc surface100cand the two side surfaces define a first accommodating space for accommodating the auger101and the snow collected by the auger101. The first accommodating space is connected with a second accommodating space, and the collected snow is thrown from an impeller housing200.

Further, please refer toFIG.4throughFIG.6. The auger101is arranged on a first rotation shaft301. The first rotation shaft301is arranged in the first accommodating space of the auger housing100and is laterally arranged between the first side surface100aand the second side surface100b. The first rotation shaft301is parallel to the horizontal plane, and is fixed on the first side surface100aand the second side surface100bthrough an auger shaft base301a. When the first rotation shaft301rotates, the auger101arranged on it rotates with a rotation of the first rotation shaft301, thereby collecting the snow on the ground and enabling the snow enter the first accommodating space of the auger housing100. In some embodiments, the auger101includes a plurality of auger blades, such as from 4 to 8, for example 4. A range of a diameter of the auger blade is, for example, from 250 mm to 320 mm, such as 274 mm. A range of a rotation speed of the auger is, for example, from 100 rmp to 150 rmp, such as 120 rmp. A range of a length of a single side of the auger101is, for example, from 250 mm to 300 mm, such as 271 mm. The auger blades of the auger101are arranged with a gap between each other, so that the auger101may define a helical structure. A helix angle of the helical structure is from 10 degrees to 80 degrees, for example, 30 degrees. A gap distance between the plurality of auger blades is from 2 mm to 50 mm, for example, 20 mm. There is a gap which is from 2 mm to 10 mm between the auger blade and the auger housing100. The auger blade further has a gap which is from 5 mm to 30 mm between its free end and the ground, so that a high-speed rotation space may be defined when the auger blade rotates, which will not cause wear among the auger blades. In order to further enhance a strength of the blade, the auger blade is further provided with an arc-shaped groove101amatched with an arc shape thereof. A depth of the arc-shaped groove101ais from 2 mm to 5 mm, for example, 2 mm. For quickly removing and shoveling the snow, an end surface of the auger blade is provided with saw teeth.

Further, please refer toFIG.4throughFIG.6. The auger assembly10further includes a plurality of central tubes104and a plurality of auger supporting plates103. The central tube104is fixed on the first rotation shaft301and covers the first rotation shaft301for protecting the first rotation shaft301. For example, the number of the central tubes104is 2, which are located on both sides of a connection position between the first rotation shaft301and the second rotation shaft302respectively. The auger assembly10further includes the auger supporting plate103. A midpoint of the auger supporting plate103is fixed on the first rotation shaft301or/and the central tube104. Both ends of the auger supporting plate103are fixed with a blade of the auger. The number of auger supporting plates103is, for example, 4. Both ends of each two blades of the auger are fixed with the auger supporting plate103.

Further, please refer toFIG.4. The snow shovel102is arranged on a side of the arc surface100cof the auger housing100close to the ground. When the snow thrower1is working, the snow shovel102is used to shovel the snow on the ground.

Further, please refer toFIG.4. The auger housing100is further provided with a plurality of first lights105. The first light105is mounted on a top of the arc surface100cof the auger housing100and is located above the auger101. The first light105is connected with the battery assembly40. The first light105is used in a snow removal in a dark environment.

Please refer toFIG.2,FIG.4throughFIG.7. The auger assembly further includes a foot106. The foot106is connected with the auger housing100. For example, there are two sets of feet106, which are respectively connected with the first side surface100aand the second side surface100bto support the auger assembly10. The foot106includes a first supporting surface106aand a second supporting surface106barranged opposite to each other, so that when the first supporting surface106ais worn, the foot106may be rotated to enable the second supporting surface106bto contact the ground to support the auger assembly10.

Please refer toFIG.2throughFIG.4,FIG.8throughFIG.23. The impeller assembly includes the impeller201, the impeller housing200and a chute base202. A side wall of the impeller housing200is provided with an opening. A bottom wall of the impeller housing200is provided with a through hole, the through hole is located in a center of the bottom wall, allows the second rotation shaft302to pass through and rotate in the through hole. At the same time, a circumference of the through hole defines a first concave area200a′, so that a strength of the impeller housing200may be enhanced. A side wall and a bottom wall of the impeller housing200are vertically arranged. When mounting the impeller housing200, the side wall of the impeller housing200is connected with the auger housing100to define the second accommodating space, and the other side of the impeller housing200is connected with the chassis80. The second accommodating space defined by the impeller housing200is connected with the first accommodating space. The snow collected by the auger101is squeezed into the second accommodating space by the auger101. In an embodiment of the disclosure, the impeller housing200may be integrally formed with the auger housing100, and a side of the impeller housing200is seamlessly connected with the arc surface100c. A side wall of the impeller housing200is provided with a first opening204. The first opening204is arranged on a side of the side wall of the impeller housing200for connecting the chute base202.

Please refer toFIG.1,FIG.8throughFIG.10. In an embodiment of the disclosure, the impeller housing200includes a middle housing200band a rear housing200a. The middle housing200bis the side wall of the impeller housing200, and the rear housing200ais a bottom wall of the impeller housing200. The middle housing200bis a cylindrical structure with two open ends, and is mounted to the chassis80. An end opening of the middle housing200bis sealed by the rear housing200a. The rear housing200ais a cover-shaped structure with a circular bottom surface, and is provided with a through hole for the second rotation shaft302to pass through. The first concave area200a′ is defined on a circumference of the through opening, so that a strength of the impeller housing200may be enhanced. At the same time, it is convenient to position a rotation shaft of the power assembly30of the snow thrower and the impeller201. The rear housing200aand the middle housing200bare enclosed to define a second accommodating space with one end open. The second accommodating space is connected with the first accommodating space of the auger assembly10of the snow thrower, so that the snow collected by the auger assembly10may be thrown from the first accommodating space to the second accommodating space. A cylindrical surface of the middle housing200bis provided with the first opening204that communicates with the chute base202, so as to further throw the snow in the second accommodating space outward. A cylinder height of the cylindrical structure of the middle housing200bis from 5 cm to 50 cm, for example, 20 cm, so as to ensure a depth of the second accommodating space. Further, a diameter of the cylinder is from 20 cm to 70 cm, such as 40 cm, 50 cm. Within a height and diameter range mentioned above, a snow collection capacity of the second accommodating space may be effectively guaranteed.

Please refer toFIG.8throughFIG.12. In an embodiment of the disclosure, the impeller201is located in the second accommodating space. The impeller201includes an impeller base201band an impeller blade201a. A plurality of impeller blades201aare welded together with the impeller base201b. The impeller base201bis circular. The impeller blades201aare substantially evenly distributed on an outer circumference of the impeller base of the impeller201. In some embodiments, the impeller blade201ahas a predetermined distance from a center of the impeller base201b, and the impeller blade201aon a side close to the center of the impeller base201bhas a lower height, so that the center of the impeller base201bdefines a second concave area201a′. When the impeller201rotates at a high speed along with the second rotation shaft302, the second concave area201a′ defines a vacuum low pressure area, and defines a pressure difference with a pressure of an external high pressure area, which can actively suck the external snow into the impeller housing200more and faster and enhances a kinetic energy of the snow throwing structure of the snow thrower, so that the snow in the first accommodating space close to an inlet of the impeller housing200is sucked into the impeller housing200. A center of the impeller base201bis fixed on the second rotation shaft302, and the impeller base201bis perpendicular to the second rotation shaft302.

Please refer toFIG.5,FIG.8throughFIG.12. In this embodiment, the impeller201includes at least one impeller blade201a, such as 3 to 6 blades, for example, 3 blades. These impeller blades201aare substantially evenly distributed in the second accommodating space, for example, arranged inside the rear housing200a. The blade201ais connected with the impeller base201b, and the impeller base201bis fixed on the second rotation shaft302of the power assembly30. In other embodiments, the blade201ais directly fixed on the second rotation shaft302. Further, the impeller blade201amay be welded and fixed with a central tube201csleeved on the second rotation shaft302. The impeller201rotates with a rotation of the second rotation shaft302, and the impeller blades201arotate synchronously, so that the snow in the second accommodating space is thrown out through the chute base202as described below. In order to ensure a strength of the impeller201and a smooth progress of a snow throwing operation, there is a gap which is from 4 mm to 8 mm between the impeller201and the cylindrical middle housing200b, and there is also a gap which is from 4 mm to 8 mm between the impeller housing200and the cylindrical middle housing200b. In some embodiments, the gap is from 4 mm to 5.5 mm, for example 4.5 mm. In other embodiments, there is a gap of 6.5 mm between the impeller201and the cylindrical middle housing200b, so as to avoid a friction with the middle housing200b, and within this range, the snow may flow smoothly, which may withstand greater snow pressure, and easily collect and throw snow with different thicknesses. There is also a certain distance between the impeller201and the rear housing200a, and a distance between the impeller201and the rear housing200ais, for example, 2 mm to 3 mm. In order to further ensure the strength of the impeller201and a smooth snow throwing, the impeller blade201ais a metal blade with a flanging structure to enhance a strength of the impeller blade201a. It should be noted that a length and width of the impeller blade201aare not particularly limited, and these may be selected and adjusted according to a volume and shape of the middle housing200b. For example, the length of the impeller blade201ais from 5 cm to 10 cm, such as 6 cm, and the width of the impeller blade201ais from 3 cm to 5 cm, such as 3 cm. A rotation speed of the impeller201is from 1000 rpm to 1250 rpm. In this embodiment, the rotation speed of the impeller201is, for example, from 500 rpm to 1500 rpm, and in other embodiments, the rotation speed of the impeller201is from 1000 rpm to 1250 rpm.

Please refer toFIG.8throughFIG.12. The impeller201further includes a plurality of supporting parts203. The number of the supporting parts203is the same as the number of the blades201a. The supporting parts203are arranged on an edge of the impeller base201band are perpendicular to a protruding part of the impeller base201b. The supporting parts203are in contact with back surfaces of the blades201ato be engaged with the blades201a. When the blades201arotate and throw snow, the supporting parts203provide a supporting force for the blades201a.

Further, please refer toFIG.8throughFIG.13. In an embodiment of the disclosure, the chute base202is located on a side of the impeller housing200and is connected with the first opening204on the side wall of the impeller housing200. When the impeller201rotates with the second rotation shaft302, the snow in the second accommodating space is thrown from the chute base202by the impeller201. The disclosure does not limit a shape of the impeller housing200. In this embodiment, the impeller housing200is, for example, a cylindrical shape. In other embodiments, the impeller housing200is, for example, a prismatic shape.

Please refer toFIG.8throughFIG.13. In an embodiment of the disclosure, the chute base202may be a cylindrical structure with two ends open, which is vertically fixed on the middle housing200b. One end of the chute base202is connected with the first opening204on the middle housing200bto communicate with the second accommodating space, and the other end of the chute base202is connected with the chute700with a deflector701, so that when the impeller201rotates with the second rotation shaft302, the snow in the second accommodating space is thrown by the impeller201through the chute base202, the chute700, and the deflector701. Further, in order to implement the snow throwing operation quickly, effectively and continuously, the chute700is located on a tangent line of a centrifugal force in a rotation direction of the impeller201. A height of the chute700is from 10 cm to 100 cm, for example, 50 cm. Within this range, an effectively remote throwing is possible. The impeller201may be rotated either clockwise or counterclockwise. Correspondingly, the chute700may be set according to the rotation direction of the impeller201and requirements of a surrounding environment (throwing the snow to an appropriate position), so as to smoothly throw the snow.

Please refer toFIG.8throughFIG.13. In an embodiment of the disclosure, the first opening204on the impeller housing200is pentagonal. Correspondingly, a second opening205is arranged at a part of the chute base202connected with the impeller housing200. A shape of the second opening205is adapted to a shape of the first opening204, which is also pentagonal. The first opening204and the second opening205with pentagon shapes facilitate a production of the chute base202and a connection between the chute base202and the impeller housing200.

Please refer toFIG.18andFIG.20. In an embodiment of the disclosure, the rear housing200aof the impeller housing200is provided with a through hole. The through hole is located in a center of the rear housing200a, and allows the second rotation shaft302to pass through and rotate within the through hole. The middle housing200band the rear housing200aof the impeller housing200are vertically arranged. When mounting the impeller housing200, the middle housing200bof the impeller housing200is connected with the auger housing100for communicating with the first accommodating space. At this time, the middle housing200bof the impeller housing200is perpendicular to the rear housing200a. The middle housing200bof the impeller housing200is provided with an opening200c. The opening200cis arranged on a side of the middle housing200bof the impeller housing200and is an inlet of the chute base202.

Please refer toFIG.12throughFIG.14. In another embodiment of the disclosure, the impeller housing200is in a shape of a volute, and is in a shape of an Archimedes' spiral volute. A periphery of the rear housing200aof the impeller housing200is a volute curve. The periphery of the rear housing200aof the impeller housing200is an Archimedes' spiral. A starting end A of the volute curve is a side of the opening200cof the impeller housing200, along the middle housing200bof the impeller housing200, and ends at the other side of the opening200cof the impeller housing200.

Please refer toFIG.14throughFIG.19. In another embodiment of the disclosure, a distance between an axis of the second rotation shaft302and an end of the impeller blade201aaway from the center of the impeller base201bis defined as L1. A distance between a point on a side wall of the impeller housing200and the center of the impeller base201bis defined as L2. The L1 and the L2 partially overlap. A movement gap between the impeller blade201aand an inner side wall of the impeller housing200is L0. L0=L2−L1. If a radius of the impeller blade201ais x, and an angle between a line connecting any point on the volute curve to the center of the impeller base201band the vertical direction is 6, then an expression of a shape of the volute curve at an outer periphery of the middle housing200bin the impeller housing200and the rear housing200aof the impeller housing200is: y=f(x, θ). With the snow throwing structure of the snow thrower provided by the embodiment, the impeller housing200is set as a volute structure with the rear housing200ain the shape of the Archimedes' spiral, so that a fast and strong airflow passage is defined in the impeller housing200, which realizes an increase of wind energy turbocharging and improves a snow throwing efficiency. And since the volute curve is from the starting end A to a final end B, which means that along a rotation direction of the impeller201, the movement gap between an outer end of the impeller blade201aand the inner side wall of the corresponding impeller housing200is gradually increased. Therefore, the volute snow throwing air passage may improve a phenomenon of housing blocking due to thick snow, thereby preventing the impeller201and the auger101from being overloaded.

Please refer toFIG.18andFIG.20. In another embodiment of the disclosure, a through hole is arranged in a center of the impeller housing200, which is located at a center of the rear housing200aof the impeller housing200. The second rotation shaft302passes through the through hole from a side of the rear housing200aof the impeller housing200to the other side of the rear housing200aof the impeller housing200, is used to fix the impeller201, drives the impeller201to rotate, and throws the snow. An end of the second rotation shaft302is coupled to the first rotation shaft301for driving the auger101to rotate. The other end of the second rotation shaft302is coupled to an output end of the power assembly30through a chain or belt transmission. When the snow thrower1is working, the motor in the power assembly30works, and drives the second rotation shaft302to rotate, thereby driving the auger101to rotate. In this embodiment, a rotation direction of the second rotation shaft302is from the starting end A of the volute curve, along the middle housing200bof the impeller housing200, to the final end B of the volute curve. In this embodiment, when looking from an end of the second rotation shaft302connected with the first rotation shaft301to the other end, the auger101rotates in a counterclockwise direction.

Please refer toFIG.18throughFIG.22. In another embodiment of the disclosure, the impeller201is connected on the second rotation shaft302. The impeller201rotates to throw the snow from the chute base202. The impeller201includes a plurality of impeller blades201aand a impeller base201b, the plurality of impeller blades201aare connected with the impeller base201b, and the number of the blades201ais equal to or greater than, for example, three. A central through hole is arranged in the center of the impeller base201b, the second rotation shaft302penetrates through the central through hole, and the second rotation shaft302is connected with the impeller base201b. The impeller201is made of hard material. In this embodiment, a material of the impeller201is, for example, metal. In other embodiments, the material of the impeller201is, for example, plastic. In this embodiment, the blades201aand the impeller base201bare connected by welding or other means. In other embodiments, the blades201aand the impeller base201bare integrally formed.

Please refer toFIG.12throughFIG.22. In another embodiment of the disclosure, the impeller base201bis circular, and a radius of the impeller base201bis much less than a distance from the center of the rear housing200aof the impeller housing200to the middle housing200bof the impeller housing200. A plurality of impeller blades201aare connected with the impeller base201b, and the number of the impeller blades201ais, for example, three. The plurality of impeller blades201aare centrally symmetric with respect to a center of the impeller base201b, which means centrally symmetric with respect to the second rotation shaft302.

Please refer toFIG.12throughFIG.22. In another embodiment of the disclosure, the impeller blades201aare in a shape of an open groove. Further, the impeller blades201aare in a shape of a U-shaped open groove. An end of the plurality of impeller blades201ais fixed on the impeller base201band has a predetermined distance from the center of the impeller base201b. The other end of the plurality of impeller blades201aextends along a direction of the radius of the impeller base201band extends out of the impeller base201b, and notches of the blades201aare perpendicular to a bottom surface where the impeller base201bis located. In this embodiment, a material of the plurality of impeller blades201ais metal.

Please refer toFIG.12throughFIG.22. In another embodiment of the disclosure, the impeller201further includes a plurality of supporting parts203. The number of the supporting parts203is the same as the number of the impeller blades201a. The supporting parts203are arranged on the edge of the impeller base201band are perpendicular to the protruding part of the impeller base201b. The supporting parts203are in contact with the back surfaces of the impeller blades201ato be engaged with the impeller blades201a. When the impeller blades201arotate and throw snow, the supporting parts203provide a supporting force for the blades201a.

Please refer toFIG.12throughFIG.22. In another embodiment of the disclosure, the impeller base201bis circular, and the radius of the impeller base201bis slightly less than the distance from the starting end A of the volute curve to the center of the impeller housing200. The plurality of impeller blades201aare connected with the impeller base201b, and the number of the impeller blades201ais greater than three. For example, the number of the impeller blades201ais 12. The plurality of impeller blades201aare centrally symmetric with respect to a center of the impeller base201b, which means centrally symmetric with respect to the second rotation shaft302.

Please refer toFIG.12throughFIG.22. In another embodiment of the disclosure, the impeller blades201aare arranged perpendicular to the impeller base201b. An end of the plurality of impeller blades201ais fixed on the impeller base201band has a predetermined distance from the center of the impeller base201b. The other end of the plurality of impeller blades201aextends along the direction of the radius of the impeller base201b, and extends to the edge of the impeller base201b. When the impeller blades201aare rotating, the other end of the impeller blades201ais close to the middle housing200bof the impeller housing200at the starting end A of the volute curve. In this embodiment, a height of the impeller blades201aclose to the middle housing200bis higher than a height of the impeller blades201aat the center of the impeller base201b. On a side close to the impeller base201b, the height of the impeller blade201ais equal to or lower than the height of the center of the impeller base201b, and the material of the impeller blade201ais plastic.

Please refer toFIG.18throughFIG.22. In another embodiment of the disclosure, the impeller blade201ahas the predetermined distance from the center of the impeller base201b, and the impeller blade201aon the side close to the center of the impeller base201bhas the lower height, so that the center of the impeller base201bdefines a concave area. When the impeller201rotates at a high speed, the concave area defines a vacuum low pressure area, and defines a pressure difference with a pressure of an external high pressure area, which can actively suck the external snow into the impeller housing200more and faster and enhances the kinetic energy of the snow throwing structure of the snow thrower, so that the snow in the first accommodating space close to the inlet of the impeller housing200is sucked into the impeller housing200. Compared with simply utilizing the auger101to squeeze the snow into the impeller housing200, the snow thrower of the disclosure can also suck the snow into the impeller housing200through the impeller201, which improves a performance of snow blowing and throwing and a whole efficiency of the snow thrower.

Please refer toFIG.18andFIG.20. In another embodiment of the disclosure, the chute base202is arranged on the middle housing200bof the impeller housing200and is connected with the opening200con the middle housing200bof the impeller housing200. The chute base202is mounted on a tangent direction of the final end of the volute curve. In this embodiment, the chute base202and the impeller housing200are integrally formed, and are a metal component or a plastic component. In other embodiments, the chute base202and the impeller housing200may be connected by welding. The chute base202and the impeller housing200may be metal components or plastic components.

Please refer toFIG.18andFIG.20. In another embodiment of the disclosure, an area of the inlet of the chute base202is larger than an area of the outlet, and the chute base202is, for example, in an inverted funnel shape. After the snow is thrown from the impeller housing200, it is smoothly thrown along an inner wall of the inverted funnel-shaped chute base202. The inverted funnel-shaped chute base202may quickly gather the snow and throw it at a high speed. The disclosure does not limit a shape of the inlet and outlet of the chute base202. In this embodiment, the inlet and outlet of the chute base202are, for example, circular. In other embodiments, the inlet and outlet of the chute base202are shaped such as polygons, a combination of arcs and straight lines, and the like.

Please refer toFIG.14throughFIG.17. In another embodiment of the disclosure, a circle defined by ends of the impeller201away from the center of the impeller base201bwhen the impeller201is rotating is defined as a first circle. A circle defined by the farthest points on the auger101away from the first rotation shaft301when the auger101is rotating is defined as a second circle. A diameter of the first circle is, for example, D1, and a diameter of the second circle is, for example, D2. A ratio of the diameter D2 of the second circle to the diameter D1 of the first circle ranges from 0.9 to 1.5. In this embodiment, a minimum distance between a plane the first circle located and a plane the second circle located is, for example, H2. A range of H2 is, for example, from 5 mm to 60 mm.

Please refer toFIG.14throughFIG.17. In another embodiment of the disclosure, the first rotation shaft301and the second rotation shaft302are substantially perpendicular to each other, and the first rotation shaft301is located below the second rotation shaft302. In the vertical direction, a distance between the first rotation shaft301and the second rotation shaft302is, for example, H1. A range of H1 is, for example, from 25 mm to 60 mm. A gearbox assembly is further arranged between the second rotation shaft302and the first rotation shaft301for adjusting a rotation speed between the impeller201and the auger101. A range of a reduction ratio of the gearbox assembly is, for example, from 8 to 12.

Please refer toFIG.23throughFIG.34. In an embodiment of the disclosure, the power assembly includes a first motor300, the first rotation shaft301and the second rotation shaft302. Wherein, the first motor300is connected with the impeller housing200. In some embodiments, the first motor300is mounted on an upper portion of the impeller housing200, which means that the first motor300is mounted on the impeller housing200and is located on a side of the chute base202.

Please refer toFIG.23throughFIG.34. In an embodiment of the disclosure, the power assembly may include the first motor300, the first rotation shaft301and the second rotation shaft302. The first motor300may be connected with the impeller housing200. The first motor300is arranged on an upper portion of the impeller housing200. The first motor300may be arranged on the impeller housing200through a fixed base306. After the first motor300is mounted on an upper portion of the impeller housing200, the first motor300is located at a top of the impeller housing200, and the first motor300is located on a side of the chute base202, and the first motor300is located forward of the battery assembly40. Further, an output shaft of the first motor300may be oriented facing the rear of the snow thrower, which means the output shaft of the first motor300extends in a direction away from the auger housing100, which means that the output shaft of the first motor300extends in a direction of a side the chassis80located. After the first motor300is connected with the impeller housing200, the output end of the first motor300is located above a connection position between the impeller housing200and the chassis80. The first motor300is mounted on the impeller housing200through the fixed base306. The impeller housing200is further provided with a bracket305. A side of the bracket305is arranged in an arc shape matched with an outer side wall of the impeller housing200. The bracket305is connected with the impeller housing200by welding. The fixed seat306is connected with the bracket305, for example, by bolts, so as to facilitate a disassembly and assembly of the first motor300. A first transmission wheel309is arranged on the output shaft of the first motor300, so the first motor300may drive the first transmission wheel309to rotate. A second transmission wheel308is arranged below the first transmission wheel309, and the second transmission wheel308is arranged on an end of the second rotation shaft302and outside the impeller housing200, which means that the second transmission wheel308is located on the same side of the impeller housing200as the first transmission wheel309. The first transmission wheel309and the second transmission wheel308may be connected by a belt or a chain, so that the first transmission wheel309may drive the second transmission wheel308to rotate.

Please refer toFIG.1,FIG.23throughFIG.34. The first motor300is placed on the impeller housing200, so that there is a lot of space above the chassis80to place the battery assembly40. In addition, the first motor300, the impeller housing200, the first transmission wheel309, the second transmission wheel308, and the belt or the chain may define a module. During assembly, the first motor300, the impeller housing200, the first transmission wheel309, the second transmission wheel308, and the belt or the chain may be assembled together, and then the assembled part may be connected with the snow thrower1, which has a simple structure and convenient to assemble. In addition, a structure of the disclosure enables the first motor300, the first transmission wheel309and the second transmission wheel308to be assembled on the same side, which further improves the convenience of assembly.

Please refer toFIG.26throughFIG.34andFIG.44. A fan900is also arranged on the second rotation shaft302. The fan900and the second transmission wheel308are located at the same end of the second rotation shaft302, and the fan900is located outside the second transmission wheel308. A diameter of the fan900may be less than a diameter of the second transmission wheel308. Since the second transmission wheel308and the fan900are both arranged on the second rotation shaft302, the second transmission wheel308and the fan900may rotate coaxially or synchronously. In this embodiment, the fan900and the second transmission wheel308are both arranged on an outside of the impeller housing200, which means on a side of the impeller housing200away from the auger housing100. Both the fan900and the second transmission wheel308are arranged in the chassis80. A first notch802bis further arranged on a side of a top surface of the chassis80close to the impeller housing200. The first notch802bis used to provide a passage for the belt or chain to connect the second transmission wheel308with the first transmission wheel309, which means that a connecting surface803further exists between the second transmission wheel308and the impeller housing200, that is to say, the second transmission wheel308is located in the chassis80. In this embodiment, the fan900is arranged in the chassis80for heat dissipation of the components in the chassis80, and for heat dissipation of the belt to improve a duration life of the belt. In addition, the fan900is connected with the second rotation shaft302, and a rotation of the second rotation shaft302may drive the fan900to rotate without additional power transmission, which gives a compact structure and a good heat dissipation of the belt and the second transmission wheel308.

Please refer toFIG.23throughFIG.34. A heat dissipation fan307bis connected with an end of the first motor300away from the output shaft. The end of the first motor300provided with the heat dissipation fan307bis connected with a volute307. The volute307covers on a periphery of the heat dissipation fan307b, which can guide and gather heat dissipation airflow, improve a smoothness of the heat dissipation airflow, and enable a heat dissipation effect to be better. In addition, an outside of the first motor300is further covered with a motor cover307a(as shown inFIG.2) to prevent water, dust, etc. from entering the first motor300, so as to protect the first motor300. In addition, the motor cover may gather the airflow, so that the heat dissipation airflow can dissipate heat for the first motor300more concentratedly and quickly, thereby further improving the heat dissipation effect.

Please refer toFIG.26throughFIG.34. In this embodiment, the belt is used to connect the first transmission wheel309with the second transmission wheel308, a tensioning structure313is further arranged on the mounting plate. The mounting plate may be fixed on the impeller housing200, and the belt may be tensioned through the tensioning structure313to become more reliable. By using the belt or chain to connect the first transmission wheel309with the second transmission wheel308, a wear between the parts may be reduced, and a replacement of the parts may be facilitated.

Please refer toFIG.25throughFIG.27. The tensioning structure313includes, for example, a tensioning plate318, a tensioning wheel314, a first tensioning spring316and the mounting plate319. The mounting plate319is connected with the impeller housing200, and the mounting plate319is further connected with the above-mentioned bracket305to strengthen a connection between the bracket305and the impeller housing200. In this embodiment, the mounting plate319is connected with the impeller housing200and the bracket305by welding, and this arrangement may strengthen a strength of the impeller housing200and a fixation of the first motor300, and prevent unexpected situations such as overturning of the first motor300. The tensioning plate318is rotatably connected with the mounting plate319. The tensioning wheel314is mounted on the tensioning plate318. An end of the first tensioning spring316is connected with the tensioning plate318, and the other end of the first tensioning spring316is connected with the fixed base306of the first motor300. The first tensioning spring316pulls the tensioning plate318, so that the tensioning wheel314is tightly pressed on the belt, thereby realizing a tensioning of the belt. In addition, the tensioning structure313of this embodiment is further provided with a ratchet wheel315, a ratchet pawl320and a second tensioning spring317. The ratchet wheel315is connected on the tensioning plate318. The ratchet pawl320in connected on the mounting plate319. The ratchet wheel315is connected with the tensioning plate318. A rotation of the ratchet wheel315may drive the tensioning plate318to rotate. An end of the ratchet pawl320is matched with the ratchet wheel315, and the other end of the ratchet pawl320is connected with the second tensioning spring317. Under an action of the second tensioning spring317, the ratchet pawl320is engaged with the ratchet wheel315, which can prevent the ratchet wheel315from rotating in an opposite direction and prevent the tensioning plate318from rotating, thereby causing the tensioning wheel314to be disengaged from the belt. An arrangement of the ratchet pawl320and the ratchet wheel315in this embodiment can avoid a failure of the tensioning structure313of the belt, and can enable the belt tensioning to be more reliable. In addition, a tensioning force of the tensioning wheel314on the belt may also be adjusted by manually adjusting a matching between the ratchet pawl320and the ratchet wheel315. When the snow thrower is working, the output end of the first motor300rotates, and the second rotation shaft302rotates accordingly, which drives the impeller201connected with the second rotation shaft302and the first rotation shaft301to rotate, and then drives the auger101fixed on the first rotation shaft301to rotate. A use of the belt or chain transmission may reduce the wear between the components, and the components are easy to replace. At the same time, there is no transmission gap, and the cost is low.

Please refer toFIG.28,FIG.30throughFIG.33. In another embodiment of the disclosure, a chain is used to drive the first rotation shaft301and the second rotation shaft302to rotate. When a chain transmission is adopted, it mainly includes a transmission assembly33arranged between the first motor300and the second rotation shaft302, the first motor300is connected with a driving sprocket351, and the second rotation shaft302is connected with a driven sprocket352. In this embodiment, the transmission assembly33includes a transmission housing34and a sprocket assembly35. The sprocket assembly35is mounted in the transmission housing34. The sprocket assembly35includes the driving sprocket351, the driven sprocket352and a chain353. The driving sprocket351and the driven sprocket352are rotatably mounted on both ends inside the transmission housing34. The chain353is mounted around an outside of the driving sprocket351and the driven sprocket352and meshed with the driving sprocket351and the driven sprocket352. The driving sprocket351and the driven sprocket352are in a transmission connection through the chain353, and a transmission ratio between the driving sprocket351and the driven sprocket352is set, for example, between from 2 to 10. In the disclosure, the driving sprocket351, the driven sprocket352and the chain353are all mounted in the transmission housing34, so that the transmission assembly is a whole assembly, which enables a mounting to be quick and convenient.

Please refer toFIG.28,FIG.30throughFIG.33. In another embodiment of the disclosure, two ends inside the transmission housing34are respectively provided with a driving sprocket mounting groove331and a driven sprocket mounting groove332. The transmission housing34includes a first transmission housing341and a second transmission housing342. The first transmission housing341and the second transmission housing342are connected with each other and define a closed housing cavity. The sprocket assembly35is mounted in the housing cavity. The first transmission housing341and the second transmission housing342are both provided with the driving sprocket mounting groove331and the driven sprocket mounting groove332, and the driving sprocket mounting groove331and the driven sprocket mounting groove332correspond to each other. Both the driving sprocket mounting groove331and the driven sprocket mounting groove332are provided with mounting grooves, so as to facilitate a mounting of the driving sprocket351and the driven sprocket352. Further, the mounting groove is a circular mounting groove. It should be noted that bottoms of the driving sprocket mounting groove331and the driven sprocket mounting groove332on the first transmission housing341are provided with through holes333. The through hole333and the driving sprocket mounting groove331or the driven sprocket mounting groove332are coaxially arranged, so as to facilitate a connection between the power assembly, the auger10and the transmission assembly. It should also be noted that a sealing gasket is arranged between the first transmission housing341and the second transmission housing342to improve its sealing performance and prevent dust and the like from entering an interior of the transmission assembly, thereby affecting a duration life of the chain.

Please refer toFIG.28,FIG.30throughFIG.33. In another embodiment of the disclosure, the second transmission housing342is further provided with an oil injection nozzle3421, so as to inject lubricant into the transmission assembly. The lubricant may prevent a decrease of a transmission life of the chain due to an excessive temperature during transmission, and reduce noise during chain transmission.

Please refer toFIG.28,FIG.30throughFIG.33. In another embodiment of the disclosure, the driving sprocket351is mounted in the driving sprocket mounting groove331on an inner side of the transmission housing34. Two sides of a center of the driving sprocket351protrude outward to define a first rotating shaft3511. First bearings3512are mounted on both sides of the driving sprocket351. The first bearing3512is sleeved on the first rotating shaft3511. The first bearings3512on both sides of the driving sprocket351are respectively mounted in the driving sprocket mounting grooves331of the first transmission housing341and the second transmission housing342, which means that the driving sprocket mounting grooves331on the first transmission housing341and the second transmission housing342are equivalent to a bearing seat, so as to facilitate a mounting of the first bearing3512and thus facilitate a mounting of the driving sprocket351. It should also be noted that the center of the driving sprocket351is a through hole, so as to facilitate a connection with the power assembly, which means that the power assembly is connected with the driving sprocket351through the through hole at a bottom of the driving sprocket mounting groove331on the first transmission housing341. In addition, it should be noted that sealing structures are arranged at a connection position between the power assembly and the driving sprocket351and a connection position between the first bearing3512and the driving sprocket mounting groove331on the first transmission housing341to prevent the dust and the like entering the interior of the transmission assembly, thereby affecting the duration life of the chain, and at the same time avoiding a leakage of lubricant.

Please refer toFIG.28,FIG.30throughFIG.33. In another embodiment of the disclosure, the driven sprocket352is mounted in the driven sprocket mounting groove332on the other side inside the transmission housing34. Two sides of a center of the driven sprocket352protrude outward to define a second rotating shaft3521. Second bearings3522are mounted on both sides of the driven sprocket352. The second bearing3522is sleeved on the second rotating shaft3521. The second bearings3522on both sides of the driven sprocket352are mounted in the driven sprocket mounting grooves332of the first transmission housing341and the second transmission housing342respectively, which means that the driven sprocket mounting grooves332on the the first transmission housing341and the second transmission housing342are equivalent to a bearing seat, so as to facilitate a mounting of the second bearing3522and thus facilitate a mounting of the driven sprocket352. It should also be noted that a center of the driven sprocket352is a through hole, so as to facilitate a connection with the second rotation shaft302, which means that the second rotation shaft302is connected with the driven sprocket352through the through hole at a bottom of the driven sprocket mounting groove332on the first transmission housing341. In addition, it should be noted that sealing structures are arranged at a connection position between the second rotation shaft302and the driven sprocket352and a connection position between the second bearing3512and the driven sprocket mounting groove332on the first transmission housing341to prevent the dust and the like entering the interior of the transmission assembly, thereby affecting the duration life of the chain, and at the same time avoiding a leakage of lubricant.

Please refer toFIG.28,FIG.30throughFIG.33. In another embodiment of the disclosure, the transmission assembly also includes a tensioning sprocket354. The tensioning sprocket354is mounted inside the transmission housing34, located between the driving sprocket351and the driven sprocket352and meshed with the chain353. The tensioning sprocket354is rotatably connected with the first transmission housing341and the second transmission housing342through a rotation shaft3541, and the tensioning sprocket354is meshed with the chain353. The first transmission housing341and the second transmission housing342are further correspondingly provided with tensioning sprocket mounting grooves334. Third bearings3542are mounted at both ends of the tensioning sprocket354. The third bearing3542is sleeved on the rotation shaft3541and mounted in the tensioning sprocket mounting groove334, which means that the tensioning sprocket mounting grooves334on the first transmission housing341and the second transmission housing342are equivalent to the bearing seat, so as to facilitate a mounting of the third bearing3542and thus facilitate a mounting of the tensioning sprocket354.

Please refer toFIG.4,FIG.23throughFIG.35. In an embodiment of the disclosure, the auger10is mounted on the first rotation shaft301. The impeller201is mounted on the second rotation shaft302. The first motor300drives the second rotation shaft302, the impeller201on the second rotation shaft302and the fan900on the second rotation shaft302to rotate, thereby driving the first rotation shaft301and the auger101mounted on the first rotation shaft301to rotate. In this embodiment, the second rotation shaft302is perpendicular to the first rotation shaft301and is parallel to the horizontal plane. Of course, in other embodiments of the disclosure, a certain angle may also be defined between the second rotation shaft302and the first rotation shaft301, for example, from 1 degree to 4 degrees. In addition, a certain angle may also be defined between the second rotation shaft302and the horizontal plane, and a certain angle may also be defined between the first rotation shaft301and the horizontal plane. An end of the second rotation shaft302is in a transmission connection with the first rotation shaft301, and the other end of the second rotation shaft302extends along a horizontal direction, from a side where the impeller housing200is connected with the auger housing100to the other side, and then is connected with the output end of the first motor300through the belt or chain. When the second rotation shaft302rotates, the impeller201rotates accordingly. And the gearbox assembly may further be arranged between the second rotation shaft302and the first rotation shaft301to adjust the rotation speed of the impeller201and the auger101. The reduction ratio of the gearbox assembly is in a range of, for example, from 8 to 12.

Please refer toFIG.34, in other embodiments, the output end of the first motor300and the second rotation shaft302are connected through a coupling or other shaft connecting components, which may realize a direct transmission between the first motor300and the second rotation shaft302and improve a transmission efficiency.

Please refer toFIG.34. In an embodiment of the disclosure, the first rotation shaft301and the second rotation shaft302are connected by a worm. A worm303is arranged at an end of the second rotation shaft302connected with the first rotation shaft301, and a worm gear304is arranged in a middle part of the first rotation shaft301. The worm303and the worm gear304are meshed with each other. When the second rotation shaft302rotates, the first rotation shaft301is driven to rotate. In this embodiment, the second rotation shaft302and the worm303are in an integral structure. Of course, in other embodiments, the second rotation shaft302and the worm303may also be two separate components, and the second rotation shaft302and the worm303are connected by a fastener such as pins, which are not limited in this disclosure.

Please refer toFIG.5,FIG.34andFIG.35. A worm gear housing310is further arranged on the first rotation shaft301and the second rotation shaft302, which covers a connection part between the first rotation shaft301and the second rotation shaft302. The worm gear housing310is connected with a fixed device107, an end of the fixed device107is fixed on the worm gear housing310and the other end of the fixed device107is fixed on the auger housing100. The fixed device107acts simultaneously with the worm gear housing310to reinforce the first rotation shaft301and the second rotation shaft302, as well as strengthening the auger101on the first rotation shaft301and the impeller201on the second rotation shaft302. A plurality of washers and gaskets are further arranged on both sides of the worm gear304and the worm303for fixing the worm gear304and the worm303.

Please refer toFIG.34throughFIG.42. In an embodiment of the disclosure, the worm gear housing310is an integrally formed housing, an end surface of the worm gear housing310is provided with a second penetrating hole3102and a first penetrating hole3101, and the second penetrating hole3102and the first penetrating hole3101communicate with each other. In some embodiments, the second penetrating hole3102and the first penetrating hole3101are perpendicular to each other. Both ends of the first penetrating hole3101are sealed with a first sealing end cover311, and the second penetrating hole3102is sealed with a second sealing end cover312. An end of the second rotation shaft302is connected with, for example, the first motor300in the power assembly30, and the other end of the second rotation shaft302is provided with the worm303and is sleeved in the second penetrating hole3102. The second rotation shaft302rotates under an action of the power device30. The worm gear304is sleeved in the first penetrating hole3101, and is meshed with the worm303of the second rotation shaft302to define a worm transmission. The worm gear304is connected with the first rotation shaft301to drive the first rotation shaft301to move. In this embodiment, the worm gear304is sleeved on the first rotation shaft301. The worm gear304is connected with the first rotation shaft301through a key in an embodiment. The first rotation shaft301passes through the worm gear304. The first rotation shaft301and the second rotation shaft302are respectively arranged along an X-axis (transverse) and the Y-axis (longitudinal) of the horizontal plane, which means that the second rotation shaft302and the worm gear304are arranged vertically. The first rotation shaft301rotates with the rotation of the second rotation shaft302through the worm transmission, thereby driving the auger101arranged on the first rotation shaft301to roll and shovel the snow. It should be noted that two ends of the worm gear304are provided with longer extension parts, which extend to the first sealing end cover311that closes the first penetrating hole3101to seal the worm gear housing310, so that a leakage of the lubricant may be avoided when adding lubricant into a cavity between the worm gear304and the worm gear housing. Further, the second sealing end cover312at the second penetrating hole3102is provided with a warped edge structure3121, so that the operator may pry the entire second sealing end cover312through the warped edge structure3121, and then disassemble the entire worm gear structure for repairing and replacement. When disassembling, the second sealing end cover312is opened, an elastic spring (not shown) is arranged in the second sealing end cover312, and the bearing may be moved after removing the elastic spring, so that the worm gear and worm are no longer meshed with each other, and then the entire structure may be disassembled.

Please refer toFIG.34throughFIG.42. In an embodiment of the disclosure, the worm gear304includes a worm gear body3040in a middle position, and extension parts at both ends of the worm gear body3040. The extension parts at both ends of the worm gear body3040include a first extension part3041and a second extension part3042. The worm gear body3040, the first extension parts3041and the second extension parts3042at both ends of the worm gear body3040define a complete hollow cavity3043. The first rotation shaft301passes through the hollow cavity3043of the worm gear. The worm gear body3040is provided with gear teeth, and the gear teeth are meshed with the worm303. When the first rotation shaft301is connected with the worm gear304and mounted inside the first penetrating hole3101, the first extension part3041extends to the first sealing end cover311that closes the first penetrating hole3101.

Please refer toFIG.35,FIG.41andFIG.42. In an embodiment of the disclosure, the first rotation shaft301is supported through a bearing3045, the bearing3045is located in the worm gear housing310, and the bearing3045is connected with the first sealing end cover311. The first sealing end cover311is provided with a through hole to allow the first rotation shaft301to pass through. The first extension part3041extends into the through hole and has a very small gap with an inner wall of the through hole, which prevents the first extension part3041from wearing the first sealing end cover311. A sealing component3044is arranged between the first sealing end cover311and the bearing3045of the first rotation shaft301. The sealing component3044is clamped with the first extension part3041. An inner side of the sealing component3044is substantially completely fitted with the first rotation shaft301, and an outer side of the sealing component3044is substantially completely fitted with the first sealing end cover311, which isolates a gap between the bearing3045of the first rotation shaft301and the first sealing end cover311. Therefore, when the liquid oil is used at the bearing3045of the first rotation shaft301, an oil leakage will be avoided.

Please refer toFIG.34throughFIG.42. The disclosure provides the worm gear housing310. The worm gear304passes through the first penetrating hole3101of the worm gear housing310and is meshed with the worm303of the second rotation shaft302. In this embodiment, the first penetrating hole3101includes a first port3103and a second port3104. A radius of the second port3104is adapted to a radius of the first rotation shaft301. In some embodiments, the radius of the second port3104is slightly greater than the radius of the first rotation shaft301, which allows the first rotation shaft301to pass through. A radius of the first port3103is greater than the radius of the second port3104, which facilitates to mount the worm gear304. At a position where the first penetrating hole3101communicates with the second penetrating hole3102, a radius of the first penetrating hole3101is substantially the same as that of the radius of the first port3103. Such first port3103and second port3104with different radii facilitate an assembly and positioning. During mounting, an end of the second rotation shaft302with the worm303is extended into the worm gear housing310, and then the first rotation shaft301with the worm gear304is extended into the worm gear housing310. There is already the second rotation shaft302at a communication position where the first penetrating hole3101communicates with the second penetrating hole3102, and the first penetrating hole3101with a larger radius at the communication position may easily let the first rotation shaft301pass through, which is convenient for the worm gear304to be meshed with the worm303. After the first rotation shaft301passes through the communication position where the first penetrating hole3101communicates with the second penetrating hole3102, the first port3103with a smaller radius facilitates a positioning of the first rotation shaft301, which enables a mounting of the first rotation shaft301to be more convenient.

Please refer toFIG.43throughFIG.46. In an embodiment of the disclosure, the chassis80is arranged on a side of the impeller assembly20opposite to the auger assembly10. The chassis80is used for fixing the wheel assembly50and providing an accommodating space for the control board assembly. Please refer toFIG.44, the chassis80includes a main housing802, the connecting surface803, a bottom surface804, a fixed component806, a hanging rod801and a bracket805. The main housing802is in a groove structure with one end open. A notch of the main housing802faces downward, and an opening of the main housing802faces the impeller assembly20. The notch of the main housing802is connected with the bottom surface804, and the opening of the main housing802is connected with the connecting surface803to define a closed chassis80. First through holes802aare arranged on opposite sides of the main housing802, and the first through holes802aare used to connect the wheel assembly50. On a top surface of the main housing802, a first notch802bis further arranged on a side close to the connecting surface803. The first notch802bis used to provide a passage for the belt connecting the first transmission wheel309and the second transmission wheel308. A plurality of through holes are further arranged on the top surface of the main housing802for providing passages for an electrical connection between the battery assembly40and the control board assembly.

Further, please refer toFIG.26,FIG.27,FIG.43andFIG.44. In an embodiment of the disclosure, the fixed component806is arranged in an L shape, and the fixed component806is fixed on an outer bottom wall of the impeller housing200. Two fixed components806are arranged in parallel and opposite to each other, and a distance between the two fixed components806is greater than a width of the connecting surface803. The connecting surface803is fixed, for example, on the outer bottom wall of the impeller housing200by bolts, and is used for connecting with the impeller assembly20and the chassis80. Both sides of the connecting surface803are provided with first connecting components803b. When the connecting surface803is fixed on an outer bottom wall of the impeller housing200, there is a gap between the fixed component806and the first connecting component803bof the connecting surface803. The main housing802of the chassis80is clamped in the gap defined by the fixing component806and the first connecting component803b, and is connected by bolts. A second through hole803ais arranged on the connecting surface803, and a radius of the second through hole803ais less than a radius of the second transmission wheel308. The second transmission wheel308, the first transmission wheel309and the fan900are all located on a side of the connecting surface803close to the main housing802. The second rotation shaft302sequentially passes through the second through hole803aand the bottom wall of the impeller housing200into the second accommodating space.

Further, please refer toFIG.27,FIG.43andFIG.44. In an embodiment of the disclosure, a side of the first connecting component803bis provided with a first groove803c. The hanging rod801is mounted on the main housing802. Both ends of the hanging rod801are fixed on two opposite side walls of the main housing802, and the hanging rod801is located on a side of the main housing802connected with the connecting surface803. When the chassis80is connected with the impeller assembly20, the hanging rod801is clamped in the first groove803c, and the chassis80rotates around an axis of the hanging rod801, so that a side wall of the main housing802is clamped in the gap defined by the fixed component806and the first connecting component803b, and the chassis80and the control assembly60on the chassis80are connected with the impeller assembly20through connecting the main housing802with the fixed component806and the first connecting component803bby bolts. An assembly and disassembly of the chassis80and the impeller assembly20in this embodiment is very convenient, which improves an assembly convenience of the snow thrower1.

Further, please refer toFIG.27,FIG.43andFIG.44. The brackets805are arranged on both sides of the main housing802, the brackets805are located on a side close to the bottom surface804, and the brackets805are used to support the control board assembly in the chassis80.

Please refer toFIG.1,FIG.3,FIG.45throughFIG.48. A baffle assembly is arranged between the impeller assembly20and the control board assembly. The baffle assembly separates the control board assembly in the chassis80from the fan900and the second transmission wheel308to prevent a movement interference and prevent wires connected with the control board assembly from twisting into the fan900and the second transmission wheel308. The disclosure does not limit the number of baffles. In this embodiment, the baffle assembly includes a first baffle814and a second baffle815. The first baffle814is fixed on the bracket805, and on a side of the first baffle814away from the bracket805, the first baffle814is provided with a second groove816, and the second groove816divides the side of the first baffle814away from the bracket into a first clamping component817and a second clamping component818. The second baffle815is fixed on a circuit board base906, and the second baffle815and the circuit board base906are integrally formed. A side of the second baffle815away from the circuit board base906is clamped in the second groove816, and the first clamping component817is located at a side of the second baffle815. The second clamping component818is located on the other side of the second baffle815, so that a connection between the first baffle814and the second baffle815is more reliable, and the baffle assembly will not fall over.

Please refer toFIG.45throughFIG.50. In an embodiment of the disclosure, a wire clip807is fixed on the main housing802and located on a side opposite to the connecting surface803. The wire clip807is used to provide a circuit passage between the control board assembly arranged inside the chassis80and external electrical components. Wires on an operation console602extend to the chassis80along a operation handle601, enter the chassis80through the wire clip807, and are connected with the control board assembly in the chassis80. The wire clip807includes a wire base810and a wire cover811. The wire base810and the wire cover811are fastened together, and a wire passage812is defined in the wire clip807. A circular arc rib813is arranged in the wire passage812to increase a friction between the wire and the wire passage812. In some embodiments, the wire clip807is in a triangular shape. At each top corner, the wire base810and the wire cover811are fixed and pressed by bolts, so as to meet requirements of a wire pulling force test. In this embodiment, an inlet of the wire passage812is located on a side wall where the wire clip807is fixed. An outlet of the wire passage812is attached and fitted with the chassis80, and a through hole is arranged at a position corresponding to the chassis80. The wires enter through the inlet of the wire passage812, pass through the wire passage812, enter the chassis80from the outlet of the wire passage812, and are connected with the control board assembly in the chassis80.

Please refer toFIG.45andFIG.46. The control board assembly is, for example, a circuit board. The control board assembly is arranged inside the chassis80. Wherein, the control board assembly includes a first control board assembly901, a second control board assembly902, a third control board assembly903and at least one fourth control board assembly904. The first control board assembly901is used to control the first light105, including controlling an on-and-off of the first light105on the auger housing100. The second control board assembly902is used to control the first motor300, including controlling an on-and-off and a rotation speed of the first motor300. The third control board assembly903is used to control a battery410, including controlling the charging and discharging of a battery410. The fourth control board assembly904is used to control an on-and-off, rotation speed, and steering of a wheel hub motor501in the wheel assembly50.

Please refer toFIG.45throughFIG.57. In an embodiment of the disclosure, on a top surface of an interior of the chassis80, the circuit board base906is arranged on a side close to the fan900. Two sides of the circuit board base906are provided with grooves906a. On a side of the chassis80close to the bottom surface804, a plurality of symmetrical connecting bases905are fixed at a position opposite to the circuit board base906. In this embodiment, the connecting base905includes a left connecting base and a right connecting base. The plurality of connecting bases905and the circuit board base906work together to limit positions of the first control board assembly901, the second control board assembly902and the third control board assembly903. An end of the connecting base905is fixed on the bracket805, and the other end of the connecting base905is fixed on the fixed part of the wheel assembly50.

Please refer toFIG.45throughFIG.58. On a side wall of the chassis80, a plurality of fixed bases907are fixed on a side wall opposite to the connecting surface803. In this embodiment, the number of the fixed bases907is, for example, two, including a left fixed base and a right fixed base. The left fixed base and the right fixed base are fixed on the side wall of the chassis80in parallel, and are used for placing the fourth control board assembly904. The fixed base907is further provided with a plurality of reinforcing ribs907a, so that a strength of the fixed base907is higher and a structure is more stable. The reinforcing ribs907aare higher than a plane where they are located, which increases a surface area of the fixed base907and increases a distance between the chassis80and the fixed base907, thereby enhancing the heat dissipation effect. A second notch907bis further arranged on the fixed base907, and the second notch907bis arc-shaped. When the fourth control board assembly904is placed on the fixed base907, it needs to be connected with the wheel hub motor501through wiring, and the second notch907bprovides a passage for the wiring between the fourth control board assembly904and the wheel hub motor501, which keeps the wiring clean and organized.

Please refer toFIG.45throughFIG.57. In an embodiment of the disclosure, the first control board assembly901is fixed on the circuit board base906on the top surface of the chassis80. The first control board assembly901includes a first control board901aand a first housing901b. The first control board901ais arranged on the first housing901b. The first control board901ais connected with the first light105and a button on the operation console602. When the button on the operation console602is pressed, the on-and-off of the first light105may be adjusted. The first housing901bis used to fix the first control board901a. In this embodiment, the first housing901bis fixed on the circuit panel base906, and the first housing901bis, for example, a plastic component.

Please refer toFIG.45throughFIG.57. In an embodiment of the disclosure, a second control board assembly902is fixed between the circuit board base906and the connecting base905and is close to the side wall of the chassis80. The second control board assembly902is close to a side wall of the main housing802connected with the connecting surface803. The second control board assembly902includes a second control board902aand a first heat dissipation piece902b. The first heat dissipation piece902bis located between the circuit board base906and the connecting base905, and is inserted into the grooves906a. The second control board902ais fixed on the first heat dissipation piece902b. The second control board902ais fixed on the first heat dissipation piece902b, for example, by fasteners or glue. The second control board902ais connected with the first motor300and the button on the console602. When the button on the operation console602is pressed, the rotation speed of the first motor300and the like may be adjusted. A surface of the first heat dissipation piece902baway from the second control board902aincludes dense concave grooves for expanding a heat dissipation area.

Please refer toFIG.45throughFIG.54. In an embodiment of the disclosure, the third control board assembly903is located between the circuit board base906and another connecting base905and is close to the side wall of the chassis80. The third control board assembly903is close to the other side wall of the main housing802connected with the connecting surface803, and is located on an opposite side of the second control board assembly902. The third control board assembly903includes a third control board903a, a second housing903band a second dissipation piece (not shown in the figure). The second housing903bis located between the circuit board base906and another connecting base905, and is inserted and connected in another grooves906a. The third control board903ais fixed on the second housing903bby, for example, fasteners or glue. The third control board903ais connected with the battery410and the button on the operation console602. Wherein, the third control board903aand the battery410are bidirectionally connected with each other. The battery410supplies power for the third control board903a, and the third control board903acontrols a discharge of the battery410. When the button on the operation console602is pressed, an output voltage, discharge mode, etc. of the battery410may be adjusted. In addition, a heat dissipation piece may be attached to the third control board903ato dissipate heat for the third control board903a.

Please refer toFIG.45throughFIG.54. In an embodiment of the disclosure, the fourth control board assembly904is fixed between two symmetrical fixed bases907and is close to the other side wall of the chassis80. The fourth control board assembly904is separated from the first control board assembly901, the second control board assembly902, and the third control board assembly903through a connecting plate513in the wheel assembly50. The fourth control board assembly904is close to a side wall opposite to the fan900. The fourth control board assembly904includes a fourth control board904aand a third heat dissipation piece904b. The fourth control board904ais connected with the wheel hub motor501and the button on the operation console602. When the button on the operation console602is pressed, a rotation speed, steering, etc. of the wheel hub motor501may be adjusted. The third heat dissipation piece904bis fixed between the two symmetrical fixed bases907and is close to the other side wall of the chassis80. The third heat dissipation piece904bis a hollow housing. The fourth control board904ais placed inside the third heat dissipation piece904b. A surface of the third heat dissipation piece904bis provided with a plurality of concave grooves, which may expand the heat dissipation area. Openings are arranged at both ends of the third heat dissipation piece904bfor providing a connection passage for the fourth control board904aand the outside.

Please refer toFIG.1andFIG.51. the first control board901a, second control board902aand fourth control board904aare all connected with the third control board903ato realize a connection of the battery assembly40with the power assembly30, the wheel assembly50and the control assembly60, which enables the battery assembly40to supply power for the power assembly30, the wheel assembly50and the control assembly60.

Please refer toFIG.43throughFIG.58. In this embodiment, the control board assembly is arranged in the closed chassis80which is dust-proof and waterproof. A plurality of control boards are respectively placed close to different side walls of the chassis80, instead of on a side wall of the fan900, so as to fully and reasonably utilize a space in the chassis80. Moreover, a plurality of the control boards are arranged below the battery410, which facilitates a connection between the battery410and the control boards, and enables a circuit arrangement to be simple and orderly. The control board assembly is arranged in the chassis80, and the wheel hub motor501is located in a wheel500, so that the fourth control board904ais conveniently connected with the wheel hub motor501. The chassis80is located in a middle of the snow thrower1, and the control board assembly is arranged in the chassis80, so that an arrangement of the overall circuit wires is shorter, which saves materials and reduces costs. The fan900is arranged at an end of the second rotation shaft302and is located in the chassis80to dissipate heat for the control board in the chassis80, which reduces a loss of the control board and a maintenance cost. In addition, the fan900can further dissipate heat from the pulley and the belt, thereby reducing a loss of the belt and prolonging the duration life of the belt.

Please refer toFIG.59andFIG.60. In an embodiment of the disclosure, the wheel assembly50includes the wheel500, the wheel hub motor501and the fixed part. An output shaft505of the wheel hub motor501is connected with the chassis80, and the wheel hub motor501is connected with the control assembly60and the control board assembly, in order to control the wheel hub motor501to work through the control assembly60and the control board assembly. The wheel hub motor501is connected with the fourth control board904a, so as to adjust the on-and-off, rotation speed, etc. of the wheel hub motor501. The wheel500is connected with the wheel hub motor501, which allows the wheel hub motor501to drive the wheel500to rotate. The fixed part is connected with the output shaft505on the chassis80, which greatly ensures a stability of the hand push outdoor tool during traveling, steering and speed adjustion. The wheel hub motor501is provided at least two, such as two, four, etc. A plurality of wheel hub motors501are evenly arranged on two opposite sides of the chassis80, and the plurality of wheel hub motors501are independently controlled. In this embodiment, wheel hub motors501are respectively coupled to two opposite sides of the chassis80, and a wheel500is coupled to each wheel hub motor501. Each wheel hub motor501is independently controlled. A forward, backward and steering of the snow thrower1is realized through independently controlling the rotation speed of each wheel hub motor501.

Please refer toFIG.44,FIG.59andFIG.60. In an embodiment of the disclosure, wheel hub motors501are respectively coupled to both sides of the chassis80. The wheel500is coupled to each wheel hub motor501, and the wheel hub motor501is allowed to drive the wheel500to rotate. In this embodiment, the output shaft505of the wheel hub motor501passes through the first through hole802aon the main housing802and is connected on the main housing802, and the wheel500is sleeved on the wheel hub motor501and is connected with the wheel hub motor501. There is a certain gap between the wheel500and an outer side wall of the main housing802. A distance range of the gap is, for example, from 1 mm to 15 mm, so as to ensure that when the wheel500rotates at a high speed, the wheel500is prevented from being worn, which ensures a stability and avoid a subversion and overturn. A central through hole is further arranged inside the output shaft505, and an electric wire passes through the central through hole to connect the wheel hub motor501with the control assembly60, the control board assembly and the battery assembly40. In this embodiment, the two wheel hub motors501are driven independently. The output shaft505includes a first output shaft505aand a second output shaft505b. The first output shaft505ais connected with the wheel hub motor501, the second output shaft505bis connected with another wheel hub motor501, and the first output shaft505aand the second output shaft505bare coaxially arranged.

Please refer toFIG.59throughFIG.61. In an embodiment of the disclosure, the fixed part includes an axle fixed base506arranged between the wheel500and the outer side wall of the main housing802. Each axle fixed base506includes a first fixed component507and a plurality of third connecting components508. The first fixed component507is provided with a through hole with a certain diameter and depth. The through hole with the certain diameter and depth on the first fixed component507is sleeved on the output shaft505. The third connecting components508are arranged on a periphery of the first fixed component507. In this embodiment, the plurality of the third connecting components508are evenly distributed around the first fixed component507, and the third connecting components508are connected with the main housing802through bolts, thereby connecting the wheel500with the chassis80. The number of the third connecting components508is three.

Please refer toFIG.59throughFIG.63. In an embodiment of the disclosure, the fixed part includes a supporting base509arranged in the chassis80and a shaft sleeve510arranged on the supporting base509. The supporting base509includes a first supporting base509aand a second supporting base509b. A first shaft sleeve510ais connected with the first supporting base509a, and a second shaft sleeve510bis connected with the second supporting base509b. In this embodiment, the first output shaft505aand the second output shaft505bpass through the first through hole802ainto the chassis80, the first output shaft505aprotrudes into the first shaft sleeve510a, and the second output shaft505bprotrudes into the second shaft sleeve510b. The first shaft sleeve510ais sleeved on the first output shaft505a, and the first output shaft505ais connected with the first shaft sleeve510a. The second shaft sleeve510bis sleeved on the second output shaft505b, and the second output shaft505bis connected with the second shaft sleeve510b. The shaft sleeve510and the axle fixed base506effectively ensure that the first output shaft505aand the second output shaft505bare arranged coaxially, thereby ensuring that the wheel hub motors501in the two wheels500are arranged coaxially and the two independent wheel hub motors501coaxially rotates. In addition, the two shaft sleeves510play a role of supporting and fixing the output shaft505of the wheel hub motor501, which can prevent the output shaft505from swinging.

Specifically, please refer toFIG.59andFIG.62. In an embodiment of the disclosure, the supporting base509includes a first plane516and a second plane517. The first plane516is attached a bottom wall of the main housing802, and the first plane516is fixed on the bottom wall of the main housing802by bolts. The second plane517is connected with the first plane516, the second plane517is attached to the side wall of the main housing802, and the second plane517is fixed on the side wall of the main housing802by bolts. The shaft sleeve510is fixed on the second plane517, and the shaft sleeve510is parallel to the first plane516and perpendicular to the second plane517. The supporting base509is further provided with two third planes518. The third planes518are connected with the first plane516and the second plane517and are used for supporting the first plane516and the second plane517. The third plane518is triangular to enable the supporting base509to be more stable. In an embodiment, the first plane516, the second plane517and the two third planes518are integrally formed.

Please refer toFIG.59throughFIG.63. In an embodiment of the disclosure, a second fixed component511is further arranged on the supporting base509. The second fixed component511is arranged on the third plane518. The second fixed component511may be integrally formed with the third plane518. The second fixed component511is connected with the connecting base905, and the second fixed component511is used for fixing the connecting base905. When the whole machine is working, a force on the connecting base509may be transmitted to other components along the fixed connecting base905through the second fixed component511.

Please refer toFIG.59throughFIG.63. In an embodiment of the disclosure, a supporting plate512is arranged on the supporting base509. The supporting plate512is parallel to the third plane518and is connected with the first plane516and the shaft sleeve510. In this embodiment, the supporting plate512is connected with the first plane516, the second plane517and the first shaft sleeve510aor the second shaft sleeve510b. The supporting plate512is arranged between the first plane516and the shaft sleeve510to support the shaft sleeve510, so the supporting plate512may prevent the output shaft505in the shaft sleeve510from swinging toward a direction of the first plane516, which further strengthens a supporting and fixation of the output shaft505. Of course, in other embodiments, the supporting plate512may directly support between the shaft sleeve510and the chassis80, which means that an end of the supporting plate512is connected with the shaft sleeve510and the other end of the supporting plate512is directly connected with the chassis80.

Please refer toFIG.59throughFIG.65. In an embodiment of the disclosure, the connecting plate513is further arranged on a side of the shaft sleeve510opposite to the supporting plate512, and a shape of the connecting plate513is adapted to the shaft sleeve510. Across section of the connecting plate513is semicircular. The connecting plate513covers a side of the first shaft sleeve510aand the second shaft sleeve510bopposite to the supporting plate512, and an inner wall of the connecting plate513is fitted with the shaft sleeve510. Both ends of the connecting plate513are close to an inner side wall of the main housing802, and the two ends of the connecting plate513are fixed through the third fixed component514. Two third fixed components514are further arranged on the two opposite inner side walls of the main housing802, and the connecting plate513is pressed onto the shaft sleeve510by the third fixed components514. In this embodiment, both ends of the third fixed component514are fixed on the main housing802by bolts, and the third fixed component514is provided with a circular arc end515which is compatible with the connecting plate513, which means that the circular arc end515of the third fixed component514is attached to the connecting plate513. The connecting plate513is clamped between the third fixed component514and the shaft sleeve510, and the circular arc end515presses the connecting plate513towards the first shaft sleeve510aand the second shaft sleeve510bmore effectively. By arranging the third fixed component514on an opposite side of the first plane516and pressing the connecting plate513on the shaft sleeve510through the third fixed component514, the output shaft505in the shaft sleeve510may be prevented from moving towards the opposite side of the first plane516. In addition, the first supporting base509a, the connecting plate513, the second supporting base509band the main housing802define a closed frame structure on a section where the output shaft505is located, which effectively ensures a force strength of the wheel hub motors501on both sides, and can prevent the two output shafts505of the wheel hub motors501from swinging up and down. This greatly improves a running stability of the wheel hub motors501, and avoids a phenomenon that the chassis80is pulled due to the swinging of the output shafts505and avoid a deformation of the chassis80.

Please refer toFIG.66. In this embodiment, a top of the main housing802is further provided with a plurality of circuit holes802c, and control components in the chassis80are connected with the battery assembly40through the circuit holes802c. In this embodiment, three circuit holes802care arranged on the top of the main housing802, of course, more circuit holes802cmay also be arranged.

Please refer toFIG.67throughFIG.71. In this embodiment, the battery assembly40may include a battery410, a base402, a battery housing401and a cover403. The battery410may be a single battery410or multiple batteries410. The battery housing401is located in the base402. The battery housing401protrudes from the base402, and the cover403is arranged on the battery housing401.

Please refer toFIG.67throughFIG.71. In this embodiment, a bottom of the base402is provided with a plurality of first fixed parts404. The first fixed part404is provided with fixed holes, which means that the base402is fixed on the main housing802through the first fixed parts404, for example, bolts are arranged on the fixed holes, so that the base402is fixed on the main housing802. A plurality of connecting holes405are further arranged on a bottom of the base402. The connection holes405may correspond to the circuit holes802con the main housing802, that is to say, the number of the connection holes405may be equal to the number of the circuit holes802c, so that the battery is connected with the control components in the chassis80.

Please refer toFIG.67throughFIG.71. In this embodiment, the cover403is rotably arranged on the battery housing401, so the cover403may cover a top of the battery housing401. A waterproof structure (ie, a step on the battery housing401) is defined between the cover403and the battery housing401. The battery housing401and the cover403are further provided with mutually matched magnetic components, so that the cover403may be attracted to the battery housing401. Three battery cavities406are arranged in the battery housing401, and the three battery cavities406have the same structure. The battery cavity406is provided with a bounce structure408and a terminal409. The bounce structure408is located on a side of the terminal409. In this embodiment, an inlet gap is defined between the terminal409and the battery cavity406, and the inlet gap communicates with the connecting holes405and the circuit holes802c. A fixed button407is arranged on a top of the battery cavity406. When the battery is placed in the battery cavity406, a connecting terminal of the battery410are connected with the terminal409. When the fixed button407is pressed, the battery410is lifted up by the bounce structure408, so that the battery410can be taken out.

Please refer toFIG.67throughFIG.71. In this embodiment, when the battery410is placed in the battery housing401, the connecting terminals on the battery410are connected with the terminals409, and the connecting holes405and the circuit holes802cenable the battery to be connected with control components in the chassis80through the terminal409. Therefore, when the snow thrower1is in a working state, cold air generated by the fan900in the chassis80may enter the battery cavity406through the circuit holes802c, the connecting holes405and the inlet gap of the battery cavity406, so as to dissipate heat for the battery410.

Please refer toFIG.67throughFIG.71. The battery assembly40is provided with, for example, three batteries410, and the three batteries410are arranged in the battery housing401. A battery410is shown inFIG.26as an embodiment. Three battery cavities406are correspondingly arranged in the battery housing401, which means that each battery cavity406is provided with one battery410. With an arrangement position of the battery410and the battery cavities406, when the battery410is placed in the battery cavity406, a center of gravity of the battery housing401may be located on a central axis of a forward direction of the snow thrower, which means that a center of gravity of the battery assembly40is located on the central axis in the forward direction of the snow thrower, so a stability of the snow thrower may be improved.

Please refer toFIG.67throughFIG.71. Three battery cavities406are shown inFIG.70, which means that three batteries may be arranged in the battery housing401. The three battery cavities406are arranged in two rows, for example. With this arrangement, a structure of the battery housing401may be more compact, and the center of gravity of the battery housing401may be located on the central axis in the forward direction of the snow thrower.

Please refer toFIG.72.FIG.72shows a top view of the battery.FIG.72(a)shows an arrangement of a first battery4061, a second battery4062, and a third battery4063. The first battery4061, the second battery4062and the third battery4063may be arranged at an angle, for example, the angles among the first battery4061, the second battery4062and the third battery4063are 120°. The first battery4061and the third battery4063may be defined as a first battery set, the second battery4062may be defined as a second battery set. The center of gravity of the first battery set and the center of gravity of the second battery set may be located on the central axis in the forward direction of the snow thrower.FIG.72(b)shows another arrangement of the first battery4061, the second battery4062and the third battery4063. Volumes of the first battery4061and the second battery4062are the same, and the volume of the first battery4061is smaller than a volume of the third battery4062. The first battery4061and the second battery4062may be the first battery set, the third battery4063may be the second battery set. The center of gravity of the first battery set and the center of gravity of the second battery set may be located on the central axis in the forward direction of the snow thrower.FIG.72(c)shows an arrangement of the first battery4061, the second battery4062, the third battery4063and a fourth battery4064. The first battery4061, the second battery4062, the third battery4063and the fourth battery4064may be arranged in a matrix. The first battery4061and the third battery4063may be the first battery set, the second battery4062and the fourth battery4064may be the second battery set. The center of gravity of the first battery set and the center of gravity of the second battery set may be located on the central axis in the forward direction of the snow thrower.FIG.72(d)shows an arrangement of the first battery4061, the second battery4062and the third battery4063. The first battery4061, the second battery4062and the third battery4063may be arranged step-shaped, and the first motor300may also be arranged on the step. The first battery4061and the first motor300may be a first battery set, and the second battery4062and the third battery4063may be a second battery set. The center of gravity of the first battery set and the center of gravity of the second battery set may be located on the central axis in the forward direction of the snow thrower. Through the above arrangement, a center of gravity of the battery assembly may be located on the central axis in the forward direction of the snow thrower. It should be noted that the arrangement of the batteries inFIG.72is only an embodiment and not a limitation of the disclosure. In some embodiments, a plurality of batteries may also be arranged in a stack, or only one battery may be arranged in the battery housing.

Please refer toFIG.1throughFIG.43. In this embodiment, when the battery assembly40is mounted on the chassis80, the battery assembly40is arranged outside the chassis80, so it is easier to replace the battery. Wheel assemblies50are further provided on both sides of the chassis80, and the wheel assemblies50may include wheel hub motors and wheels500arranged on the wheel hub motors. When the battery assembly40is arranged on the chassis80, the center of gravity of the battery assembly40can be located on the central axis in the forward direction of the snow thrower, and the battery assembly40is located at an upper position of the wheel assembly50. Therefore, a balance of a center of gravity of the entire snow thrower1may be increased, the snow thrower1will not be misplaced or deflected in a process of traveling, and the battery assembly40may increase a friction between the wheel500and the ground, and it is not easy to slip.

Please refer toFIG.1,FIG.43andFIG.73. In an embodiment of the disclosure, the control assembly60includes the operation handle601, the operation console602and a plurality of operating components on the operation console602. A second connecting component600is fixedly connected on a side of the chassis80away from the working assembly. One end of the operation handle601is connected with the second connecting component600, the other end of the operation handle601extends away along an obliquely upper direction of the chassis80, and a height of the other end of the operation handle601is adapted to a height of a human's elbow. In this embodiment, the number of the operation handles601is, for example, two, and the two operation handles601are arranged in parallel.

Further, please refer toFIG.73. The operation console602is arranged at an end of the operation handle601away from the chassis80. In some embodiments, the operation console602is arranged between the two operation handles601, and the operating components on the operation console602are connected with the control board assembly and the battery410. The operation console602is further provided with a plurality of operating components for adjusting a working state of the snow thrower1. In an embodiment of the disclosure, the operation console602and the operating components on it are used to control an on-and-off of the snow thrower1, the first motor300and the wheel hub motor501, adjust a steering speed and steering direction of the first motor300and the wheel hub motor501, and show a power of the battery and so on.

Please refer toFIG.43,FIG.73andFIG.74, in an embodiment of the disclosure, the operation handle601includes a first operation handle601aand a second operation handle601b. An end of the first operation handle601ais fixed on the chassis80through the second connecting component600, and the other end of the first operation handle60extends toward a side of the chassis80opposite to a working end of the snow thrower. An end of the second operation handle601bis also fixed on the chassis80through the second connecting component600, and the other end of the second operation handle601bextends toward the side of the chassis80opposite to the working end of the snow thrower. In some embodiments, the first operation handle601aand the second operation handle601bare symmetrically arranged with respect to a central axis of the operation console602. The end of the first operation handle601aand the second operation handle601bclose to the operation console602is a lifting part of the snow thrower. The operation console602is fixed on the operation handle601and is located on a side of the operation handle601away from the chassis80. In some embodiments, the operation console602is located between the first operation handle601aand the second operation handle601b, and two sides of the operation console602are respectively connected with the first operation handle601aand the second operation handle601b.

Please refer toFIG.73throughFIG.76. In an embodiment of the disclosure, the first operation handle601aand the second operation handle601bare respectively provided with a first trigger610aand a second trigger610b, and pressing the first trigger610aand the second trigger610bmay trigger an on-and-off of the first motor300and the wheel hub motor501respectively. The first trigger610ais arranged at an end of the first operation handle601aaway from the second connecting component600. An end of the first trigger610ais located above the operation console602, and the other end of the first trigger610apasses through the operation console602and is rotatably connected with the operation console602through a linkage shaft620. The second trigger610bis arranged above the second operation handle601b, an end of the second trigger610bis located above the operation console602, and the other end of the second trigger610bis rotatably connected with the operation console602through the linkage shaft620. The linkage shaft620is arranged at a bottom of the operation console602, and an end of the linkage shaft620is connected with the first trigger610a, which allows the first trigger610ato drive the linkage shaft620to rotate. The other end of the linkage shaft620is rotatably connected with the second trigger610b. Tensioning devices (not shown in the figure) are further arranged on the first trigger610aand the second trigger610b. When no force is exerted on the first trigger610aand the second trigger610b, an end of the first trigger610ais away from a lifting part of the first operation handle601a, and an end of the second trigger610bis away from the lifting part of the first operation handle601a.

Please refer toFIG.73throughFIG.77. In an embodiment of the disclosure, at least two triggering devices are connected with the linkage shaft620, and the two triggering devices include a first triggering device621and a second triggering device622. The first triggering device621is connected with the linkage shaft620. When the linkage shaft620rotates, the first triggering device621rotates with the linkage shaft620. The second triggering device622is fixed on a connecting sleeve634, and the connecting sleeve634is rotatably connected with the linkage shaft620. An end of the connecting sleeve634is clamped with the second trigger610b, which allows the second trigger610bto drive the connecting sleeve634to rotate on the linkage shaft620, thereby driving the second triggering device622to rotate. When only the linkage shaft620rotates without pressing the second trigger610b, the second triggering device622does not work. As shown inFIG.78andFIG.79, an end of the connecting sleeve634is clamped with a clamping component631bon the second trigger610b.

Please refer toFIG.73throughFIG.77. In an embodiment of the disclosure, corresponding to the triggering device, a plurality of switches, including a first switch623and a second switch624, are fixed on the operation console602. The first switch623is fixed on the bottom of the operation console602and is close to the first triggering device621. The second switch624is fixed on the bottom of the operation console602and is close to the second triggering device622. When the first trigger610arotates, the linkage shaft620is driven to rotate. The first triggering device621arranged on the linkage shaft620triggers the first switch623. When the second trigger610brotates, the connecting sleeve634is driven to rotate. The second triggering device622connected on the connecting sleeve634triggers the second switch624. Wherein, the first switch623is a switch of the wheel hub motor501and is used to control an on-and-off of the wheel hub motor501. The second switch624is a switch of the first motor300for controlling an on-and-off of the first motor300.

Please refer toFIG.73throughFIG.82. In an embodiment of the disclosure, an interlocking structure630is further arranged on the linkage shaft620, so that a single handle may control a state of the first trigger610aand the second trigger610bat the same time. The interlocking structure630provided in the disclosure includes a clamping block631, a rotation block632and a cam635. The clamping block631is arranged at a connection end of the second trigger610bconnected with the linkage shaft620. The clamping block631extends out of a plane the second trigger610blocated, and defines a first concave part631awith the clamping component631bon the second trigger610b. The clamping block631rotates with a rotation of the linkage shaft620. When the second trigger610bis away from the second operation handle601b, the rotation block632is located above the clamping block631. When the second trigger610bis pressed down until it contacts the second operation handle601b, the rotation block632is clamped with the clamping block631, which means that a first protruding part633is clamped with the first concave part631a. The rotation block632is movably connected with the operation console602and is close to the clamping block631. An end of the rotation block632is rotatably connected with the operation console602, and the other end of the rotation block632is connected with the operation console602through a spring637. The rotation block632is provided with the first protruding part633, and allows the first protruding part633to be clamped with the clamping block631. The cam635is connected with the linkage shaft620, and the cam635is located at an end of the linkage shaft620connected with the second trigger610b. A second protruding part636is arranged on the cam635, and the second protruding part636is close to the rotation block632. When the first trigger610ais away from the first operation handle601a, the second protruding part636on the cam635pushes the rotation block632away from the linkage shaft620, so that the first protruding part633on the rotation block632is away from the clamping block631. When the first trigger610ais pressed down until it contacts the first operation handle601a, the second protruding part636on the cam635rotates accordingly. The second protruding part636keeps a certain distance from the rotation block632, and the first protruding part633on the rotary pressing block632is close to the locking block631.

Please refer toFIG.73throughFIG.82. In an embodiment of the disclosure, the first trigger610ais used to control the on-and-off of the wheel hub motor501, and the second trigger610bis used to control the on-and-off of the first motor300. When the first trigger610ais away from the first operation handle601aand the second trigger610bis away from the second operation handle601b, the first triggering device621on the linkage shaft620does not contact the first switch623, the second triggering device622does not contact the second switches624, the second protruding part636of the cam635pushes the rotation block632away from the linkage shaft620, and the first protruding part633on the rotation block632is located above the locking block631and is not clamped with the clamping block631. When the first trigger610aand the second trigger610bare pressed down, the first triggering device621contacts with the first switch623and triggers the first switch623, the wheel hub motor501is in a power-on state, the second triggering device622is in contact with the second switch624and triggers the second switch624, and the first motor300is in the power-on state. The second protruding part636on the cam635rotates and does not contact the rotation block632, and the first protruding part633on the rotation block632is clamped with the clamping block631. Then the second trigger610bis released, since the first protruding part633is clamped with the clamping block631, the second trigger610bis not reset, and is still in a pressed state. When the first trigger610ais released, the cam635rotates with the linkage shaft620, the first protruding part633is reset, and the rotation block632is pushed away from the clamping block631, so that the first protruding part633is not clamped with the clamping block631. At this time, the second trigger610bis resettable.

Please refer toFIG.76. In an embodiment of the disclosure, a first pressing structure626and a second pressing structure627are further arranged below the first operation handle601aand the second operation handle601b. The first pressing structure626is connected with the fourth control board904ato provide control signals for a steering of the wheel hub motors501on both sides of the chassis80.

Please refer toFIG.73throughFIG.76. In an embodiment of the disclosure, a first speed adjustment lever614aand a second speed adjustment lever614bare arranged on the operation console602, the first speed adjustment lever614aand the second speed adjustment lever614bare located between the first operation handle601aand the second operation handle614b. In this embodiment, a direction parallel to a rotation axis of the wheel assembly50is defined as a first direction XX′. In some embodiments, the first speed adjustment lever614aand the second speed adjustment lever614bare symmetrical with respect to the central axis of the operation console602. The first speed adjustment lever614ais arranged at a first angle A with the first direction XX′, and a range of the first angle A is from 3° to 15°, the second speed adjustment lever614bis arranged at a second angle B with the first direction XX′, and a range of the second angle B is from 3° to 15°. The first speed adjustment lever614aarranged at the first angle A and the second speed adjustment lever614barranged at the second angle B are ergonomic, so that the first speed adjustment lever614aand the second speed adjustment lever614bare more labor-saving when being pulled, which is more comfortable. The first speed adjustment lever614ais connected with the fourth control board904a, and is used to control the rotation speed, steering, etc. of the wheel hub motor501. The second speed adjustment lever614bis connected with the second control board902afor controlling the rotation speed of the first motor300. In this embodiment, the first speed adjustment lever614ais arranged on a side of the operation console602close to the first trigger601a, and the second speed adjustment lever614bis arranged on a side of the operation console602close to the second trigger601b. With this arrangement, a movement of the snow thrower1may be controlled on the same side, and a snow removal of the snow thrower1may be controlled on the same side, which is more in line with operating habits, and the user may use it more easily.

Please refer toFIG.73throughFIG.77. In an embodiment of the disclosure, a switch button613is further arranged on the operation console602, which is located on the operation console602and between the first speed adjustment lever614aand the second speed adjustment lever614b. A third switch625is arranged on the other side of the operation console602, and the third switch625is connected with the battery assembly40and is used to control an on-and-off of the whole snow thrower. A display device611is further arranged on the operation console602. The display device611is located between the first speed adjustment lever614aand the second speed adjustment lever614b. The display device611is used to display parameters of the plurality of batteries410in the battery assembly40, such as a power of the batteries410, whether the battery410has low temperature or low voltage, and the like. In addition, the display device611can also display a status of each light, and display whether each light is off or on. In this embodiment, the display device611separately displays a usage status of the first light105and the two second lights639. In some embodiments, the display device611is a thin film panel. Of course, in other embodiments, the display device611may also be in other structures. A button612is further arranged on an upper side of the display device611. The button612is used to control an on-and-off of the plurality of lights in this embodiment, for example, to control the first light105, the second lights639and a display light638. In addition, in other embodiments, the button612may also control an on-and-off of the display device611and adjust a brightness of the display device611.

Please refer toFIG.3andFIG.73. In an embodiment of the disclosure, the operation console602is further provided with an adjustment rod640. An end of the adjustment rod640is located on the operation console602, and the other end of the adjustment rod640passes through the operation console602and is connected with a deflector wire704in the chute control assembly70for adjusting a position of the deflector701.

Please refer toFIG.43. In an embodiment of the disclosure, the display light638and the second light639are arranged on the operation console602, and the display light638and the second light639are located on an inclined surface of the operation console602. The display light638is in a shape of a strip with both ends bent, and two second lights639are located on both sides of the display light638.

Please refer toFIG.43,FIG.83andFIG.87. In an embodiment of the disclosure, the display light638includes a first light base648, a light bar649and a first light cover647. The display light638is arranged in a strip shape with both ends bent, and the two ends of the display light638are bent to the same side. When a width of the operation console602is constant, the bent display light638may increase a display area. Wherein, the first light cover647is clamped with the first light base648to define a light bar accommodating part, and the light bar649is clamped in the light bar accommodating part. In the disclosure, the light bar649is a flexible light bar649, and the light bar649may be bent according to a shape of the light bar accommodating part.

Please refer toFIG.87throughFIG.92. In an embodiment of the disclosure, the first light cover647includes a light cover bottom wall652, and a first side wall650and a second side wall651connected with the light cover bottom wall652. The light cover bottom wall652and the two side walls define a groove, and the first side wall650and the light cover bottom wall652are arranged at a first angle, and a range of the first angle is from 85° to 95°, such as 90°. The second side wall651and the light cover bottom wall652are arranged at a second angle, and a range of the second angle is from 90° to 120°, such as 100°. Wherein, both ends of the first light cover647are bent to the same side, and the first side wall650is located on the inner side of the second side wall651. On a side connected with the second side wall651, a step653is arranged on the light cover bottom wall652. When the light bar649is clamped in the groove defined by the first light cover647, a side wall of the step653is fitted with the light bar649to limit a position of the light bar649and ensure that the light bar649does not shake in the first light cover647. On an inner side wall of the first side wall650, a plurality of stiffeners654are arranged to limit the position of the light bar649and increase a structural strength of the first side wall650.

Please refer toFIG.87throughFIG.92. In an embodiment of the disclosure, at a position where the first side wall650is bent, a connecting curved surface659is arranged on the first side wall650. The inner side wall of the connecting curved surface659is substantially completely fitted with the light bar649to prevent the light bar649from warping when it is bent, which causes the light bar649to emit light unevenly. Compared with the stiffener654, the area of the connecting curved surface659attached to the light bar649is larger, which can better prevent the light bar649from warping when it is bent, and has a stronger force. Further, the first side wall650is further provided with a third notch660at a position where the connecting curved surface659is arranged. The third notch660is arranged on a side of the first side wall650which is different from a side where the connecting curved surface659is located, and a size of the third notch660corresponds to a size of the connecting curved surface659. With this arrangement, a thickness of the entire first side wall650may be kept uniform, so as to avoid a phenomenon such as stress concentration during a molding of the first side wall650, which ensures the structural strength of the first side wall650.

Please refer toFIG.87throughFIG.92. In an embodiment of the disclosure, the first light base648includes a light base bottom wall657and a light base side wall658. The light base bottom wall657and the light base side wall658are arranged at a third angle, and the third angle is complementary to the first angle, and a range of the third angle is from 85° to 95°, such as 90°. When the first light base648is clamped with the first light cover647, the light base bottom wall657covers a notch of the first light cover647. The light base side wall658extends into the groove defined by the first light cover647, and an outer side wall of the light base side wall658is attached with an inner side wall of the second side wall651. There is a certain distance between the light base side wall658and the step653on the first light cover647to define a gap655. When the light bar649is clamped in the light bar accommodating part defined by the first light base648and the first light cover647, the gap655defines an air cavity. When the light bar649is used for a long time, the air cavity defined by the gap655defines a heat exchange with the outside to achieve a heat dissipation effect.

Please refer toFIG.87throughFIG.92. In an embodiment of the disclosure, the display light638is provided with a plurality of second fixed parts656for fixing the display light638to the operation console602. The second fixed part656includes a first fixed base656aprovided on the first light cover647and a second fixed base656bon the first light base648. Positions and structures of the first fixed base656aand the second fixed base656bcorrespond to each other. The disclosure does not limit the number and shape of the first fixed base656aand the second fixed base656b. In the embodiment, the number of the first fixed bases656ais, for example, three, wherein, two of the first fixed bases656aare connected with the second side wall651and are close to the connecting curved surface659, and one of the first fixed base656ais connected with the first side wall650and is located in a middle position of the first side wall650. The number of the second fixed bases656bis the same as the number of the first fixed bases656a, for example, three, and two of the second fixed bases656bare connected with the light base side wall658, one second fixed base656bis connected on the light base bottom wall657. When the first light cover647is clamped with the first light base648, the first fixed base656aand the second fixed base656bare clamped to define the second fixed part656. The first fixed base656aand the second fixed base656bare provided with through holes, and bolts pass through the through holes on the first fixed base656aand the second fixed base656bto fix the display light638on the operation console. In this embodiment, the second fixed part656extends toward a side of the light base bottom wall657, and extends out of a plane where the light base bottom wall657is located, so that a distance between the fixed base656and the operation console602increases, which increases a working length of the bolt and enables a connection between the display light638and the operation console602to be firm and reliable. In this embodiment, both ends of the light base bottom wall657are further provided with third fixed bases656c, and the third fixed bases656care connected with the operation console602by bolts, so that the connection between the display light638and the operation console602is more stable and reliable.

Please refer toFIG.87throughFIG.92. In an embodiment of the disclosure, the light bar649is clamped in the light bar accommodating part defined by the first light base648and the first light cover647, and the light bar649is a flexible light strip that may be bent according to a shape of the light bar accommodating part. The flexible light bar649has a high degree of integration, which may reduce a cost of the whole machine. The flexible light bar649has a different shape, color, and appearance, which may realize color change and marquee functions, so as to realize functions of lighting, warning and reminder, and achieve a better human-computer interaction function. When the light bar649needs to be mounted, the light bar649is clamped into a groove defined by the first light cover647, the first light base648is covered on a notch of the groove, clamped with the first light cover647, and then the display light638is fixed on the operation console through the second fixed part656.

Please refer toFIG.83throughFIG.85. In an embodiment of the disclosure, the second light639includes a protective cover642, a light plate643, a second light base644and a second light cover645. The protective cover642is fastened with the second light cover645to define an accommodating cavity, and is fixed together by bolts. The light plate643and the second light base644are arranged in the accommodating cavity. The light plate643is fixed on a bottom wall of the protective cover642, and the second light base644is clamped in the protective cover642. An outer side wall of the second light base644is attached to an inner side wall of the protective cover642, and an outer bottom wall of the second light base644is close to the light plate643. A plurality of light beads646are further mounted on the bottom wall of the second light base644, and the light beads646are connected with the light plate643.

Please refer toFIG.74andFIG.83. In an embodiment of the disclosure, a fifth control board641is further arranged on the operation console602, which is located below the button612and is connected with the button612. The fifth control board641is further connected with the display light638and the second light639. The fifth control board641is connected with a control unit of the light bar649and the light plate643and is used to adjust a color switching, flashing, constant light and dark of the display light638and control the on-and off of the display light638and the second light639. The disclosure does not limit the number and control method of the fifth control board641. In this embodiment, the number of the fifth control board641is, for example, one. In other embodiments, the number of the fifth control boards641is, for example, two. The fifth control board641may control the display light638and the second light639at the same time, or may also control them individually. The fifth control board641is arranged on the operation console602instead of the chassis80, so that a distance between the fifth control board641and the display light638and a distance between the fifth control board641and the second light639are closer, and connection lines are more concise and orderly. The fifth control board641controls the display lights638to achieve display effects such as marquee, color switching, flashing, constant light, dark adjustment, etc. and defines a display effect of the display light638as each working state of the whole machine, so as to play a role of lighting, warning, and reminder and achieve a better human-computer interaction.

Please refer toFIG.93. The disclosure provides the chute control assembly70to adjust the chute700and the deflector701and adjustment structures thereof.

Please refer toFIG.1andFIG.93. In an embodiment of the disclosure, the chute700is a semi-closed passage structure.

Please refer toFIG.8andFIG.93. In an embodiment of the disclosure, an end of the chute700is connected with the outlet of the chute base202and allows the chute700to rotate relative to the chute base202. When the impeller201throws snow from the chute base202, the snow is thrown from an unclosed side of the chute700. When the chute700rotates relative to the chute base202, a position of the unclosed side of the chute700changes, thereby changing a snow blowing direction of the snow thrower1.

Please refer toFIG.8andFIG.93. In an embodiment of the disclosure, a height of a side surface of the deflector701is lower than a height of a side surface of the chute700.

Please refer toFIG.8andFIG.93. In an embodiment of the disclosure, an end of the deflector701is connected with the other end of the chute700, which means connected with an end of the chute700away from the chute base200. A side of the deflector701is connected with a side of the chute700, and the deflector701is allowed to rotate around a connection point between the deflector701and the chute700. When the deflector701rotates, a snow blowing height and snow blowing direction of the snow thrower1may be adjusted.

Please refer toFIG.3,FIG.94andFIG.95. In an embodiment of the disclosure, the adjustment structure of the chute700mainly includes a rocking trigger703and a transmission structure710. An end of the rocking trigger703is connected with the transmission structure710, and the other end of the rocking trigger703extends to an operating end of the snow thrower1. The other end of the rocking trigger703extends below the operation console602of the control assembly60and is close to a handle of the snow thrower1. The transmission structure710is used to transmit a rotation of the rocking trigger703to a rotation of the chute700to change the snow blowing direction of the snow thrower1.

Please refer toFIG.94andFIG.95. In an embodiment of the disclosure, the adjustment structure of the chute700further includes a supporting component702, a positioning block711, a supporting frame712and a transmission structure casing710a.

Please refer toFIG.93toFIG.94, the supporting component702and the positioning block711provide a supporting platform for the transmission structure710. The supporting component702is in a shape of a slender tube, and an end of the supporting component702is fixed on a side of the chute base202and is located on a side close to the control assembly60, thereby fixing the transmission structure710between the chute base202and the control assembly60. In some embodiments, the other end of the supporting component702extends upward along the vertical direction, and extends to a height of a connection point between the chute700and the deflector701, and the transmission structure710is fixed at a height close to the connection point of the chute700and the deflector701. In the embodiment, the supporting components702are sleeved together by tubular objects with different inner diameters, each tubular object is provided with a plurality of through holes, and the tubular objects with different inner diameters are fixed together by bolts. A height of the supporting component702may be adjusted through the bolts.

Further, please refer toFIG.95. In this embodiment, the positioning block711is in a shape of a flat plate, and is fixed on the other end of the supporting component702, which means an end of the supporting component702away from the chute base202. The positioning block710is arranged horizontally and is used to provide a supporting platform for the transmission structure710. The positioning block711is provided with a protruding part, and the protruding part is located on a side close to the chute700.

Further, please refer toFIG.94throughFIG.98. The supporting frame712is located on the positioning block711, and a base of the supporting frame712is fixed on the positioning block711by screws. A third through hole712ais arranged above the supporting frame712. The third through hole712ais arranged along an extending direction of the rocking trigger703and allows the rocking trigger703to pass through the third through hole712afor fixing the rocking trigger703.

Further, please refer toFIG.94throughFIG.98. The transmission structure casing710acovers the transmission structure710and is fixed on the supporting frame712by screws. The transmission structure casing710ais provided with perforations for fixing the deflector wire704.

Please refer toFIG.95. The transmission structure710is located on the positioning block711, and the transmission structure710includes a first gear713, a second gear714, a connecting shaft718, a fourth connecting component716and a rotation component715.

Please refer toFIG.95andFIG.96. In an embodiment of the disclosure, the first gear713is located on the vertical plane. A shaft of the first gear713is perpendicular to a plane where teeth of the first gear713are located, and the shaft of the first gear713passes through the third through hole712aof the supporting frame712and is connected with an end of the rocking trigger703. When the rocking trigger703rotates, the first gear713rotates on the vertical plane.

Please refer toFIG.95andFIG.96. In an embodiment of the disclosure, the second gear714is located on the protruding part of the positioning block711, which means that the second gear714is located on the horizontal plane, and the second gear714is mashed with the first gear713. When the first gear713rotates on the vertical plane, the second gear714rotates on the horizontal plane.

Please refer toFIG.95andFIG.96. In an embodiment of the disclosure, the connecting shaft718is arranged in the vertical direction. An end of the connecting shaft718is connected with the second gear714. The other end of the connecting shaft718sequentially passes through a perforation in a center of the second gear714, a perforation on the rotation component715, and a perforation on the protruding part of the positioning block711, and is fixed by a nut. When the second gear714rotates on the horizontal plane, the connecting shaft718rotates on the horizontal plane. In this embodiment, at a part where the connecting shaft718is connected with the second gear714and the rotation component715, a cross-section of the connecting shaft718is square, rectangular or polygonal. The perforations arranged in the center of the second gear714and on the rotation component715are also correspondingly square, rectangular or polygonal, so that the connecting shaft718drives the rotation component715to rotate more reliably.

Please refer toFIG.95andFIG.96. In an embodiment of the disclosure, the rotation component715includes a fourth plane715band a fifth plane715a. The fourth plane715band the fifth plane715aare arranged at a certain angle. The angle between the fourth plane715band the fifth plane715ais an angle between the bottom surface of the chute700and the horizontal plane.

Please refer toFIG.95throughFIG.97. In an embodiment of the disclosure, an end of the rotation component715is connected with the chute700, and the other end is connected with the connecting shaft718. The fifth plane715aof the rotation component715is attached to the bottom surface of the chute700. A perforation is arranged on the fourth plane715bof the rotation component715for connecting the rotation component715with the connecting shaft718. The fourth plane715bof the rotation component715is located between the first gear713and the positioning block711. When the connecting shaft718rotates on the horizontal plane, the rotation component715rotates with the connecting shaft718and drives the chute700connected with the fifth plane715ato rotate, thereby changing the snow blowing direction. In this embodiment, a base of the first gear714is clamped with the fourth plane715bof the rotation component715, which allows the first gear714to drive the rotation component715to rotate, thereby driving the chute700to rotate.

Further, please refer toFIG.96. In an embodiment of the disclosure, the fourth plane715bis further provided with a first protruding block715c. The first protruding block715cextends from the fourth plane715b, and the first protruding block715cis perpendicular to the fourth plane715b. The first protruding block715cis used to be clamped with a groove of the fourth connecting component716.

Please refer toFIG.95throughFIG.97. In an embodiment of the disclosure, below the positioning block711, the fourth connecting component716is further arranged on the connecting shaft718. The fourth connecting component716is arranged parallel to the fourth plane715bof the rotation component715, and a first groove716ais arranged on a side of the fourth connecting component716. The first protruding block715con the fourth plane715bis clamped in the first groove716a, and the fourth connecting component716is used to reinforce the rotation component715.

Further, please refer toFIG.95. Below the fourth connecting component716, a shock absorbing spring717is further arranged on the connecting shaft718for shock absorbing. And between the fourth connecting component716and the positioning block711, a gasket719is further arranged between the rotation component715and the positioning block711to prevent a wear of the components.

Please refer toFIG.3,FIG.94throughFIG.96. When the rocking trigger703rotates, the first gear713connected with the rocking trigger703rotates on the vertical plane, thereby driving the second gear714meshed with the first gear713to rotate. Since the connecting shaft718is connected with the second gear714, the connecting shaft718is driven to rotate. The rotation component715is connected with the connecting shaft718, and the fifth plane715aof the rotation component715is connected with the bottom surface of the chute700, thereby driving the chute700to rotate.

Please refer toFIG.3,FIG.93throughFIG.100. In an embodiment of the disclosure, the adjustment structure of the deflector701includes the deflector wire704, a return spring705, a fifth connecting component706and a sixth connecting component707.

Please refer toFIG.93throughFIG.100. In an embodiment of the disclosure, the fifth connecting component706is fixed on the side of the chute700. A second preformation hole706aand a second concave groove706bare arranged on a plane of the fifth connecting component706perpendicular to the side surface of the chute700. The second preformation hole706ais used for fixing the return spring705, and the second concave groove706bis used for fixing an end of the deflector wire704.

Please refer toFIG.93throughFIG.100. In an embodiment of the disclosure, the sixth connecting component707is fixed on the side of the deflector701, and the fifth connecting component706and the sixth connecting component707are arranged on the same side. A first opening notch707ais arranged on a plane of the sixth connecting component707that is perpendicular to the side surface of the deflector701, and the deflector wire704passes through the first opening notch707a. At the first opening notch707a, a spring tube is arranged on a periphery of the deflector wire704for fixing the deflector wire704, which allows the deflector wire704to be pulled in the spring tube.

Please refer toFIG.93throughFIG.100, In an embodiment of the disclosure, the return spring705is fixed between the chute700and the deflector701. An end of the return spring705is fixed on the side surface of the chute700, and the other end of the return spring705is fixed on the second preformation hole706aof the fifth connecting component706. When the bottom surface of the chute700is smoothly connected with the deflector701, the return spring705is in a natural state, and when the snow blower cap701rotates, the return spring705is in a tension or compression state.

Please refer toFIG.43,FIG.93throughFIG.100. In an embodiment of the disclosure, an end of the deflector wire704is close to the operation console602and is connected with the adjustment rod640. The adjustment rod640is arranged on the operation console602, and the other end of the deflector wire704passes through a hole in the transmission structure casing710a, the first opening notch707aof the sixth connecting component707, and the second concave groove706bof the fifth connecting component706in sequence, and is fixed through the second concave groove706b.

Please refer toFIG.43,FIG.73,FIG.93throughFIG.100. When the adjustment rod640is close to the first trigger610a, the deflector wire704is in a relaxed state, and the deflector701is in a highest position. When the adjustment rod640moves forward (a side away from the first trigger610a), the adjustment rod640pulls the end of the deflector wire704close to the operation console602to move. Since a length of the deflector wire704of the chute base between the chute700and the deflector701is reduced, an end of the deflector701away from the chute700rotates toward the chute700. Then the return spring705is in tension or compression state and the snow may be thrown to a higher position. When the deflector wire704is loosened, the return spring705is reset, thereby driving the deflector701to be reset.

Please refer toFIG.101throughFIG.104. In an embodiment of the disclosure, an adjustment device720may also be used to control the snow blowing direction of the snow blowing assembly20instead of the rocking trigger. The adjustment device720may be connected on the transmission structure710, so that the transmission structure710may be driven to work by the adjustment device720, and the snow blowing direction of the impeller assembly20can be controlled. An end of the adjustment device720may pass through the control assembly60, so that it is convenient for the user to control the adjustment device720to work and adjust the snow blowing direction of the snow blowing assembly20through the transmission structure710. Of course, in other embodiments, the adjustment device720may not pass through the control assembly60, and the adjustment device720may also be connected with a lower end of the control assembly60through a connecting device. It is only necessary to movably connect the adjustment device720with the control assembly60, which is not limited here.

Please refer toFIG.101. In an embodiment of the disclosure, in order to prevent the adjustment device720from falling off from the control assembly60, the adjustment device720may also be rotatably arranged on the control assembly60through a fixed bracket735. The fixed bracket735may include an upper bracket736and a lower bracket737. The upper bracket736and the lower bracket737may be arranged on the control assembly60, so that an end of the adjustment device720may pass through a connection position between the upper bracket736and the lower bracket737to limit the adjustment device720. It should be noted that the adjustment device720in this embodiment is movably arranged between the upper bracket736and the lower bracket737. The control assembly60may be arranged on the main body of the snow thrower through a fixed fastener738. The control assembly60may be used to control an operation of the main body of the snow thrower. In this embodiment, the fixed fastener738may include four fixed bolts739. The four fixed bolts739may be symmetrically distributed on both sides of the control assembly60, so that the control assembly60may be fixed on the main body of the snow thrower through the four fixed bolts739. A height of the control assembly60may be adjusted through a matching of different bolt holes with the fixed bolts739. In other embodiments, the number of the fixed bolts739may also be six, eight, ten, etc. As long as the control assembly60may be fixed on the main body of the snow thrower, the specific number of the fixed bolts739is not limited.

Please refer toFIG.105throughFIG.107. In an embodiment of the disclosure, the adjustment device720may include an operation part721, a connecting assembly722, a first adjustment assembly723, a second adjustment assembly724, a first connecting rod725and a second connecting rod726. The operation part721may pass through the control assembly60, so that the user may control an operation of the transmission structure710by driving the operation part721to move. The operation part721may be connected with an end of the connecting component722. The other end of the connecting component722may be connected with an end of the first connecting rod725through the first adjustment assembly723, so that a certain angle may be defined between the first connecting rod725and the connecting component722. The other end of the first connecting rod725may be connected with the second connecting rod726through the second adjustment assembly724, so that a certain angle may be defined between the first connecting rod725and the second connecting rod726. The second connecting rod726may be connected with the transmission structure710.

Please refer toFIG.105andFIG.111. In an embodiment of the disclosure, the operation part721may include a handle727, a first bending rod728and a third connecting rod729. The handle727may be connected with an end of the first bending rod728, and the other end of the first bending rod728may be connected with the third connecting rod729. The third connecting rod729may be connected with the connecting assembly722. The third connecting rod729is rotatably arranged on the control assembly60, so that the user may drive the adjustment device720to move as a whole by operating the handle727. In this embodiment, the first bending rod728may be a Z-shaped rod. In other embodiments, the first bending rod728may also be a bent rod. As long as the third connecting rod729may be rotated by rotating the handle727, a specific shape of the first bending rod728is not limited.

Please refer toFIG.105andFIG.112. In an embodiment of the disclosure, the connection assembly722may include one or more connectors. The connectors may include a first connector730, a second connector731and a third connector732. The first connector730, the second connector731and the third connector732may be connected in sequence, so that axes of the first connector730, the second connector731and the third connector732may be the same. The first connector730may be connected with the third connecting rod729, and a specific connection method between the two may not be limited. For example, an end of the first connector730may be embedded in the third connecting rod729, an end of the third connecting rod729may also be embedded in the first connector730, or an end of the first connector730and an end of the third connecting rod729may be connected by bolts. As long as the first connector730and the third connecting rod729may be connected, a specific connection method of an end of the first connector730embedded into the third connecting rod729is not limited. Of course, connection methods between the first connector730and the second connector731and between the second connector731and the third connector732are not limited. The first connector730and the second connector731may be connected in an internal embedding way, or may be connected by bolts. The second connector730and the third connector732may be connected in an internal embedding way, or may be connected by bolts. Of course, the first connector730and the second connector731may be integrally formed, and the second connector730and the third connector732may also be integrally formed. An end of the third connector732may be connected with the first connecting rod725through the first adjustment assembly723.

Please refer toFIG.105andFIG.113. In an embodiment of the disclosure, the first connecting rod725may include a coupling part733and an elastic component734. An end of the coupling part733may be connected with a second link724a, and the other end of the coupling part733may be movably arranged inside a first link723c. When the user adjusts a height of the control assembly60, the first adjustment assembly723and the second adjustment assembly724will work synchronously, so that the first connecting rod725will be stretched or shortened accordingly. Therefore, the elastic component734may further arranged between the coupling part733and the first link723c. Of course, in other embodiments, an end of the coupling part733may also be connected with the first link723c, and the other end of the coupling part733may be movably arranged inside the second link724a. The elastic component734may also be arranged between the coupling part733and the second link724a, and the elastic component734may be a spring or the like.

Please refer toFIG.105andFIG.114. In an embodiment of the disclosure, the first adjustment assembly723may include a first mounting base723a, a first adjustment component723b, the first link723c, and a limiting component723d. The first mounting base723amay be fixed on the third connecting component732, and the first adjustment component723bis rotatably arranged at a connection position between the first mounting base723aand the first link723c, so that the first mounting base723amay rotate along the first adjustment component723bby a certain angle, and the first link723cmay also rotate along the first adjustment component723bby a certain angle. There is a certain angle between a plane on which a rotation direction of the first mounting base723ais located and a plane on which a rotation direction of the first link723cis located, and a specific size of the angle may not be limited. For example, in this embodiment, the angle may be 90 degrees, which means that the two planes are perpendicular to each other.

Please refer toFIG.105andFIG.114. In an embodiment of the disclosure, the first mounting base723amay be provided with a first fixed plate723a1, a second fixed plate723a2and a fixed hole31C, so that the first mounting base723amay be fixed on the connecting assembly722through a matching of the fixed hole31C with the fixed bolts, etc. The first fixed plate723a1and the second fixed plate723a2may be arranged opposite to an end of the first mounting base723a, so that there is a gap between the first fixed plate723a1and the second fixed plate723a2, and the first adjustment component723bmay be rotatably arranged in the gap. In order to facilitate a rotation of the first adjustment component723b, the first fixed plate723a1may be provided with a first fixed hole31A, the second fixed plate723a2may be provided with a second fixed hole31B, and the first fixed hole31A is arranged opposite to the second fixed hole31B. The first adjustment component723bmay be symmetrically provided with first holes723b1, so that the two first holes723b1may be matched with the first fixed holes31A and the second fixed holes31B respectively. The first fixed hole31A may be fixed with one of the first holes723b1by a tightening screw, and the second fixed hole31B may be fixed with the other first through hole723b1through the tightening screw, so that the first adjustment component723bmay be rotably arranged in the first mounting base723a.

Please refer toFIG.105andFIG.114. In an embodiment of the disclosure, the first link723cmay be provided with a third fixed plate723c1, a fourth fixed plate723c2, an opening hole723c3and the limiting component301d. The third fixed plate723c1and the fourth fixed plate723c2may be arranged opposite to an end of the first link723c, so that there is a gap between the third fixed plate723c1and the fourth fixed plate723c2, and the first adjustment component723bmay be rotatably arranged in the gap. In order to facilitate the rotation of the first adjustment component723b, the third fixed plate723c1may be provided with a third fixed hole31E, the fourth fixed plate723c2may be provided with a fourth fixed hole31F, and the third fixed hole31E is arranged opposite to the fourth fixed hole31F. Second holes723b2can be symmetrically arranged on the first adjustment component723b, so that the two second holes723b2may be respectively matched with the third fixed hole31E and the fourth fixed hole31F. The third fixed hole31E may be fixed with one of the second holes723b2by the tightening screw, and the fourth fixed hole31F may be fixed with the other second hole723b2through the tightening screw, so that the first adjustment component723bmay be rotably arranged in the first link723c. In order to be able to adjust a position of the elastic component734in the first link723cto meet requirements of different conditions, the opening hole723c3may be arranged on the first link723c. At least one opening hole723c3is arranged, and the opening hole723c3may be matched with the limiting component301dto limit a specific position of the elastic component734. The limiting component301dmay be a bolt or the like.

Please refer toFIG.105andFIG.114. In an embodiment of the disclosure, the second adjustment assembly724may include the second link724a, a second adjustment component724b, and a second mounting base724c. The second mounting base724cmay be fixed on the second connecting rod726. The second adjustment component724bis rotatably arranged at a connection position between the second mounting base724cand the second link724a, so that the second mounting base724cmay rotate along the second adjustment component724bby a certain angle, and the second link724amay rotate along the second adjustment component724bby a certain angle. There is a certain angle between a plane on which a rotation direction of the second link724ais located and a plane on which a rotation direction of the second mounting base724cis located, and a specific size of the angle may not be limited. For example, in this embodiment, the angle may be 90 degrees, which means that the two planes are perpendicular to each other.

Please refer toFIG.105andFIG.115. In an embodiment of the disclosure, a third side plate724c1and a fourth side plate724c2may be arranged on the second mounting base724c. The third side plate724c1and the fourth side plate724c2may be arranged opposite to an end of the second mounting base724c, so that there is a gap between the third side plate724c1and the fourth side plate724c2, and the second adjustment component724bmay be rotably arranged in the gap. In order to facilitate a rotation of the second adjustment component724b, the third side plate724c1may be provided with a third opening hole32E, the fourth side plate724c2may be provided with a fourth opening hole32F, the third opening hole32E and the fourth opening hole32F are arranged opposite to each other. Third holes724b1may be symmetrically arranged on the second adjustment component724b, so that the two third holes724b1may be matched with the third opening hole32E and the fourth opening hole32F respectively. The third opening hole32E may be fixed with one of the third through holes724b1by the tightening screw, and the fourth opening hole32F may be fixed with the other third hole724b1through the tightening screw, so that the second adjustment component724bmay be rotably arranged in the second mounting base724c.

Please refer toFIG.105andFIG.115. In an embodiment of the disclosure, a first side plate724a1and a second side plate724a2may be arranged on the second link724a. The first side plate724a1and the second side plate724a2may be arranged opposite to a side of the second link724a, so that there is a gap between the first side plate724a1and the second side plate724a2, and the second adjustment component724bmay be rotatably arranged in the gap. In order to facilitate the rotation of the second adjustment component724b, the first side plate724a1may be provided with a first opening hole32A, the second side plate724a2may be provided with a second opening hole32B, the first opening hole32A and the second opening hole32B are arranged opposite to each other. Fourth holes724b2may be symmetrically arranged on the first adjustment component723b, so that the two fourth holes724b2may be matched with the first opening hole32A and the second opening hole32B respectively. The first opening hole32A may be fixed with one of the fourth through holes724b2by the tightening screw, and the second opening hole32B may be fixed with the other fourth through hole724b2through the tightening screw, so that the second adjustment component724bmay be rotably arranged in the second link724a.

Please refer toFIG.105andFIG.108. In an embodiment of the disclosure, through arranging the first adjustment assembly723, the connecting assembly722may rotate in a direction along the first adjustment component723b. The first connecting rod725may rotate in another direction along the first adjustment component723b, and planes on which the two directions are located may have a certain angle. For example, in this embodiment, the two planes may be perpendicular to each other. Through arranging the second adjustment assembly724, the first connecting rod725may rotate in a direction along the second adjustment component724b. The second connecting rod may rotate in another direction along the second adjustment component724b, and planes on which the two directions are located may have a certain angle. For example, in this embodiment, the two planes may be perpendicular to each other. Therefore, through a matching of the first adjustment assembly723with the second adjustment assembly724, the adjustment device may rotate in multiple directions as a whole, which may avoid conditions such as jamming or sticking.

Please refer toFIG.105,FIG.108throughFIG.110. In an embodiment of the disclosure, in an initial state, a height of the control assembly60is equivalent to a height of the transmission structure710connected with the impeller assembly20. At this time, the handle727is in an initial position. However, when a height of the user is relatively high and the user is turning the handle727, the user often needs to adjust his own height by half-squatting, which is complicated to operate, and cause a certain safety hazard. At this time, the height of the control assembly60may be adjusted upwardly, so that the operation part721will also be adjusted upwards, and the first connecting rod725will extend outward by a certain length, which means that the coupling part733may protrude from an inside of the first link723c1. At this time, a height of the first adjustment assembly723is substantially the same as that of the control assembly60, a height of the second adjustment assembly724is substantially the same as the height of the transmission structure710, and the height of the first adjustment assembly723is higher than the height of the second adjustment assembly724, so that a height of the handle727can be rotated and matched with the user, and there is no abnormal sound and loosening phenomenon when rotating.

Please refer toFIG.105,FIG.108throughFIG.110. In an embodiment of the disclosure, when the user is short and is turning the handle727, a hand coordination is more troublesome, and the operation is more complicated, which causes a certain safety hazard. At this time, the height of the control assembly60may be adjusted downwardly, so that the operation part721will also be adjusted downwardly, and the first connecting rod725may be retracted inward by a certain length, which means that the coupling part733may be retracted toward the inside the first link723c1. At this time, the height of the first adjustment assembly723is substantially the same as that of the control assembly60, the height of the second adjustment assembly724is substantially the same as the height of the transmission structure710, and the height of the first adjustment assembly723is lower than the height of the second adjustment assembly724, so that at this time, the height of the handle727can be rotated and matched with the user, and there is no abnormal sound and loosening phenomenon when rotating.

The disclosure provides the snow thrower. Through using belts or chains for connection, a wear between components is reduced, there is no transmission gap, and the cost is low. Through arranging the first motor on the impeller housing, a larger accommodating space may be provided for the battery assembly. Through setting the chute control assembly, the snow blowing direction of the snow thrower may be adjusted, and the snow throwing direction of the impeller housing may be controlled simply and directly. Through arranging multiple assemblies on each side of the wheel, a center of the snow thrower may be stabilized above the wheel. With the snow thrower provided by the disclosure, a snow removal is more flexible and convenient, and the cost is reduced.

Please refer toFIG.116. The disclosure provides a steering method of the snow thrower. The steering method includes:S1: obtaining a current traveling speed of the snow thrower,S2: sending a steering signal to the wheel assembly,S3: comparing the current traveling speed of the snow thrower with a preset steering speed,S4: controlling the first wheel to rotate in a direction opposite to the traveling direction so that a final speed of the first wheel is substantially equal to the preset steering speed and controlling the second wheel to decelerate to the preset steering speed, if the current traveling speed of the snow thrower is greater than the preset steering speed, andS5: controlling the first wheel to rotate in a direction opposite to the traveling direction if the current traveling speed of the snow thrower is equal to the preset steering speed to enable the final speed of the first wheel to be substantially equal to the preset steering speed and keep a speed of the second wheel.

Please refer toFIG.51,FIG.73,FIG.74andFIG.116. In S1, when the snow thrower1is in a process of snow removal, the first speed adjustment lever614amay be toggled. The first speed adjustment lever614ais connected with the fourth control board904a(traveling control board). The fourth control board904aadjusts rotation speeds of the first wheel hub motor501aand the second wheel hub motor501b, thereby adjusting rotation speeds of the first wheel500aand the second wheel500b, which means that the traveling speed of the snow thrower1may be adjusted. In this embodiment, the traveling speed of the snow thrower1may be from 20 rpm to 80 rpm, for example, 20 rpm, 23 rpm, 25 rpm, 37 rpm, and 50 rpm, 60 rpm or 80 rpm. In this embodiment, the snow thrower1may include multiple forward gears, for example, four forward gears. Each time the first speed adjustment lever614ais toggled, the traveling speed of the snow thrower1may be adjusted once, so the current traveling speed of the snow thrower1may be obtained. Of course, when the first speed adjustment lever614ais toggled, the first speed adjustment lever614asends a speed adjustment signal to the fourth control board904a, and the fourth control board904amay adjust the speeds of the first wheel hub motor501aor the second wheel hub motor501b, so the current traveling speed of the snow thrower1may be obtained through the fourth control board904a. Of course, the snow thrower1may also move backward by toggling the first speed adjustment lever614a. A backward speed of the snow thrower1is, for example, from 20 rpm to 25 rpm, such as 20 rpm, 23 rpm or 25 rpm. In this embodiment, the speed of the first wheel hub motor501aor the second wheel hub motor501amay be monitored through the fourth control board904a, so as to monitor the current traveling speed of the snow thrower1, or the current traveling speed of the snow thrower1may be obtained through monitoring the gear in which the first speed adjustment lever614ais located.

Please refer toFIG.51,FIG.73,FIG.74,FIG.116throughFIG.118. In S2and S3, when the snow thrower1needs to be steered, the steering signal may be sent to the wheel assembly50, and the wheel assembly50will execute a corresponding steering after receiving the steering signal. In this embodiment, the first pressing structure626(first steering handle) or the second pressing structure627(second steering handle) may be pressed to send the steering signal to the wheel assembly50. In this embodiment, a control of the snow thrower1to steer to the left is taken as an example for description. The first pressing structure626enables the wheel assembly50to receive a signal to steer to a first direction, which means that the first pressing structure626may enable the snow thrower1to steer to the left (the first direction). The second pressing structure627enables the wheel assembly50to receive a signal to steer to a second direction, which means that the second pressing structure627may enable the snow thrower1to steer to the right (the second direction). In this embodiment, principles of the steering of the snow thrower1to the first direction or the second direction are the same. After pressing the first pressing structure626, the first pressing structure626sends the steering signal to the fourth control board904a, and the fourth control board904acontrols the first wheel hub motor501aand the second wheel hub motor501bto steer. If the snow thrower1steers at an excessively low speed, an entire steering process will be too slow. If the snow thrower1steers at an excessive speed, a large centrifugal force will be generated, which causes a discomfort to the user. Therefore, in order to improve the operator's comfort when controlling the snow thrower1to steer, the snow thrower1of this embodiment is set with the preset steering speed, so that the snow thrower1may steer within a better speed range. After the wheel assembly50receives the steering signal, the fourth control board904acompares a relationship between the current traveling speed of the snow thrower1and the preset steering speed.

Please refer toFIG.51,FIG.73,FIG.74,FIG.116andFIG.117. When the current traveling speed of the snow thrower1is greater than the preset steering speed, the S4will be executed. The S4includes:S41: monitoring by the fourth control board that the current traveling speed of the snow thrower is greater than the preset steering speed,S42: controlling the first wheel hub motor to decelerate by the fourth control board until the speed of the first wheel hub motor is zero,S43: controlling the first wheel hub motor to accelerate in reverse by the fourth control board until the speed of the first wheel hub motor is the preset steering speed, andS44: controlling the second wheel hub motor to decelerate to the preset steering speed by the fourth control board.

Please refer toFIG.51,FIG.73,FIG.74,FIG.117,FIG.121andFIG.122. In S41through S44, first, the current traveling speed of the snow thrower1is monitored through the fourth control board904a. When the fourth control board904amonitors that the current traveling speed of the snow thrower1is greater than the preset steering speed, the fourth control board904acontrols the first wheel hub motor501ato decelerate until the speed of the first wheel hub motor501ais zero. Then the fourth control board904acontrols the first wheel hub motor501ato reversely accelerate, so that the speed of the first wheel hub motor501aincreases until the speed of the first wheel hub motor501areaches the preset steering speed, and then the first wheel hub motor501ais then allowed to maintain this speed. Then the fourth control board904acontrols the second wheel hub motor501bto decelerate until the speed of the second wheel hub motor501bis equal to the preset steering speed and a traveling direction of the second wheel hub motor501bis then allowed to be maintained. Since the first wheel hub motor501aand the second wheel hub motor501bhave the same speed and opposite traveling directions, the first wheel500aand the second wheel500brotate around a center point of the connecting line between the first wheel500aand the second wheel500b, so a steering radius of this snow thrower may be zero. In this embodiment, the first wheel500aand the second wheel500bmay reach the preset steering speed at the same time, so a deceleration speed of the first wheel500ais greater than a deceleration speed of the second wheel500b. Of course, the first wheel500amay also reach the preset steering speed first, and then the second wheel500breaches the preset steering speed. A time difference between the first wheel500aand the second wheel500breaching the preset steering speed may be very short, for example, less than 1 second. Of course, in some embodiments, final speeds of the first wheel500aand the second wheel500bare different. For example, the final speed of the first wheel500ais less than the final speed of the second wheel500b, then the steering radius of the snow thrower1is not equal to zero. Of course, since a difference between the two speeds is very small, the steering radius of the snow thrower1is also very small, and the snow thrower1may be turned in a narrow area.

Please refer toFIG.118. In this embodiment, the fourth control board904afurther controls the first wheel hub motor501ato decelerate at different deceleration speed rates, for example the control method includes:S411: monitoring by the fourth control board904athat the current traveling speed of the snow thrower is greater than the preset steering speed,S412: comparing a difference value between the current traveling speed of the snow thrower and the preset steering speed by the fourth control board904a,S413: controlling the first wheel hub motor to decelerate at a first deceleration speed until the speed of the first wheel hub motor is zero and controlling the first wheel hub motor to rotate in reverse by the fourth control board904aif the difference is within a first range, andS414: controlling the first wheel hub motor to decelerate at a second deceleration speed until the speed of the first wheel hub motor is zero and controlling the first wheel hub motor to rotate in reverse by the fourth control board904aif the difference is within a second range.

Please refer toFIG.51,FIG.73,FIG.74,FIG.118,FIG.121andFIG.122. In S411to S414, when the fourth control board904amonitors that the current traveling speed of the snow thrower1is greater than the preset steering speed, the fourth control board904acompares a difference between the current traveling speed of the snow thrower1and the preset steering speed. When the difference between the current traveling speed of the snow thrower1and the preset steering speed is within the first range, the fourth control board904acontrols the first wheel hub motor501ato decelerate at the first deceleration speed until the speed of the first wheel hub motor501areaches zero. Then the fourth control board904acontrols the first wheel hub motor501ato rotate in reverse, and controls the first wheel hub motor501ato reversely accelerate, so that the speed of the first wheel hub motor501abecomes the preset steering speed. The first range is, for example, from 10 rpm to 20 rpm. When the difference between the current traveling speed of the snow thrower1and the preset steering speed is within the second range, the fourth control board904acontrols the first wheel hub motor501ato decelerate at the second deceleration speed until the speed of the first wheel hub motor501areaches zero. Then the fourth control board904acontrols the first wheel hub motor501ato reversely rotate, so that the speed of the first wheel hub motor501abecomes the preset steering speed. The second range is, for example, from 20 rpm to 40 rpm. In this embodiment, the first range is less than the second range, so the first deceleration speed is less than the second deceleration speed. Of course, when the first range is greater than the second range, the first deceleration speed is greater than the second deceleration speed. That is to say, when the difference between the traveling speed of the snow thrower1and the preset steering speed is larger, the deceleration speed of the first wheel hub motor501ais also larger. It should be noted that, in S3, the fourth control board904afurther controls the second wheel hub motor501bto decelerate until the speed of the second wheel hub motor501bis equal to the preset steering speed, and maintains the traveling direction of the second wheel hub motor501b. Since the speeds of the first wheel hub motor501aand the second wheel hub motor501bare finally the same, the deceleration speed of the first wheel hub motor501ais greater than the deceleration speed of the second wheel hub motor501b. The fourth control board904amay control the deceleration speeds of the first wheel hub motor501aand the second wheel hub motor501bat the same time, and may also decelerate the first wheel hub motor501afirst and then decelerate the second wheel hub motor501b. In this embodiment, the preset steering speed is, for example, from 10 rpm to 20 rpm, such as 10 rpm, 15 rpm or 20 rpm.

Please refer toFIG.51,FIG.73,FIG.74,FIG.116andFIG.119. If the traveling speed of the snow thrower1is equal to the preset steering speed, then execute to S5. The S5includes:S51: monitoring by the fourth control board that the current traveling speed of the snow thrower is equal to the preset steering speed,S52: controlling the first wheel hub motor to decelerate by the fourth control board until the speed of the first hub motor reaches zero,S53: controlling the first wheel hub motor to accelerate in reverse by the fourth control board until the speed of the first wheel hub motor becomes the preset steering speed, andS54: controlling the second wheel hub motor to maintain the current traveling speed by the fourth control board.

Please refer toFIG.51,FIG.73,FIG.74,FIG.116andFIG.119. A process of controlling the first wheel hub motor501aby the fourth control board904amay refer to S42and S43. When the fourth control board904acontrols a steering of the second wheel500b, the speed of the second wheel hub motor501ais maintained, and a traveling direction of the second wheel500bis also maintained. Since finally the first wheel hub motor501aand the second wheel hub motor501bhave the same speed and opposite traveling directions, the steering of the first wheel hub motor501aand the second wheel hub motor501bmay be realized, which realizes the steering of the snow thrower1.

Please refer toFIG.51,FIG.73,FIG.74andFIG.120. In this embodiment, a process of the fourth control board904acontrolling the steering of the first wheel500aand the second wheel500bmay further include:S61: sending the steering signal to the first wheel hub motor501aand the second wheel hub motor501bthrough the fourth control board904a,S62: determining whether the fourth control board904asimultaneously controls the first wheel hub motor500aand the second wheel hub motor500bto decelerate at the same time,S63: if yes, controlling the deceleration speed of the first wheel hub motor501agreater than the deceleration speed of the second wheel hub motor502a. Since the deceleration speed of the first wheel hub motor501ais greater than the deceleration speed of the second wheel hub motor502a, the final speed of the first wheel hub motor501amay be equal to the final speed of the second wheel hub motor501b, and both of them reach the final speed at the same time.S64: if no, controlling the deceleration speed of the first wheel hub motor501aequal to or less than the deceleration speed of the second wheel hub motor502a. For example, the first wheel hub motor501adecelerates first, so the deceleration speed of the first wheel hub motor501amay be equal to or less than the deceleration speed of the second wheel hub motor502a, so that both may reach the final speed at the same time.S65: comparing whether the final speeds of the first wheel hub motor501aand the second wheel hub motor502aare the same when both of them reach their final speeds,S66: if yes, obtaining a result that the final speed of the first wheel hub motor501ais the same as the final speed of the second wheel hub motor501b, for example, if both are equal to the preset steering speed, the steering radius of the snow thrower1is zero, andS67: if no, obtaining a result that the final speed of the first wheel hub motor501ais not equal to the final speed of the second wheel hub motor501b, for example, the final speed of the first wheel hub motor501ais less than the final speed of the second wheel hub motor501b, so the steering radius of the snow thrower1is not zero.

Please refer toFIG.51,FIG.73,FIG.74,FIG.121andFIG.122. In some embodiments, when the current traveling speed of the snow thrower1is less than the preset steering speed, the fourth control board904acontrols the first wheel hub motor501ato decelerate until the speed of the first wheel hub motor501areaches zero. Then the first wheel hub motor501ais accelerated in a reverse direction, so that the speed of the first wheel hub motor501ais equal to the speed of the second wheel hub motor502a. The fourth control board904amaintains the current speed of the second wheel hub motor502a. Since the first wheel500aand the second wheel500bhave the same speed and opposite traveling directions, the first wheel500aand the second wheel500bmay rotate around the center point of the connecting line between the first wheel500aand the second wheel500b, thereby achieving the steering of snow thrower1. Of course, in other embodiments, when the current traveling speed of the snow thrower1is less than the preset steering speed, the fourth control board904amay further control the second wheel hub motor502ato accelerate, and control the first wheel hub motor501ato rotate in the reverse direction until the speed of the first wheel hub motor501ais the same as the speed of the second wheel hub motor502a, which means that both are preset steering speeds.

Please refer toFIG.121throughFIG.123. When the snow thrower1is steering, the traveling direction of the first wheel500ais opposite to the traveling direction of the second wheel500b, the speeds of the second wheel500band the first wheel500aare the same, so the first wheel500aand the second wheel500bwill define approximate moments, so that the first wheel500aand the second wheel500bwill rotate around the center point of the connecting line between the first wheel500aand the second wheel500b, which means that the steering radius of the first wheel500aand the second wheel500bis zero, therefore, the snow thrower1may steer in a narrow area, and the operation is simple. Dashed arrows in theFIG.123may represent the steering directions of the first wheel500aand the second wheel500b, respectively. It should be noted that, when the snow thrower1is in the backward direction, the steering of the snow thrower1during a backward process may be referred to the above description, which will not be described in this embodiment.

In summary, the disclosure provides the snow thrower and the steering method thereof. The snow thrower may include the wheel assembly, the traveling control board and the steering handle. The wheel assembly includes the first wheel and the second wheel. When the snow thrower is steering, first the current traveling speed of the snow thrower is obtained, then the steering handle is pressed to send the steering signal to the traveling control board, and the traveling control board sends the steering signal to the wheel assembly and compares the current traveling speed of the snow thrower with the preset steering speed. When the current traveling speed of the snow thrower is greater than the preset steering speed, the traveling control board controls the first wheel to decelerate. When the speed of the first wheel is zero, the traveling control board controls the first wheel to rotate in the reverse direction, and accelerates the first wheel to the preset steering speed. The traveling control board further controls the second wheel to decelerate to the preset steering speed. The speeds of the first wheel and the second wheel reach the preset steering speed at the same time, and the steering direction of the first wheel and the second wheel is opposite, so the snow thrower may rotate around a center point between the first wheel and the second wheel, which quickly realizes the steering of the snow thrower. The steering radius of the snow thrower is zero, so it may steer in a narrow area. The steering process of the snow thrower is simple and easy to operate, which saves the operator's physical strength.

In the description of this specification, a description with reference to the terms “this embodiment”, “embodiment”, “specific embodiment”, etc. means that a specific feature, structure, material or characteristic described in connection with this embodiment or example is included in at least one embodiment or example of the disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the disclosure described above are only used to help illustrate the disclosure. The embodiments do not exhaustively describe all the details, nor do they limit the disclosure to the specific embodiments described. Obviously, many modifications and variations are possible according to this specification. The embodiments are specifically described in the specification in order to better explain the principles and practical applications of the disclosure, so that those skilled in the art can well understand and utilize the disclosure. The disclosure is limited only by the claims and their full scope and equivalents.