Patent Description:
In the garden tool, the common structure is that the battery pack and the main control circuit board are separately placed on the whole machine, and some batteries are placed in the handle and cannot be disassembled, so it is troublesome to manufacture and assemble. Especially for the electric starting engine grass trimmer, the grass trimmer takes a gasoline engine as the power source and is provided with an electric starting system, and the battery pack and the control panel are both mounted on the engine mechanism so as to conveniently supply power to the electric starting system. However, when the grass trimmer is in use, the engine will vibrate, a large amount of heat is generated, and exhaust gas is exhausted, which have an impact on the battery pack and the control panel, resulting in the failure of the grass trimmer and affecting the service life. Therefore, it is necessary to improve the prior art to solve the above problems.

<CIT> discloses a petrol-powered garden power tool which has an electric starter motor. A removable lithium battery pack for the electric starter motor is provided on the body. <CIT> discloses a hand-held battery (or pneumatic) powered household power tool with multiple functions achieved via different attachments (drill, impact driver, ratchet etc). The battery pack is received within a cavity in the handle of the device. With certain attachments, a counterbalance is provided in order to reduce vibrations.

The object of the present invention is to provide a handle assembly which is convenient to mount and reliable to use.

Another object of the present invention is to provide a garden tool which has a reliable structure and a long service life.

To achieve the above object, the present invention provides a handle assembly for a garden tool according to independent claim <NUM>.

Further improvements are subject matter of dependent claims <NUM>-<NUM>.

The invention further provides a garden tool according to claim <NUM>.

It can be seen from the above technical solutions that the present invention has a plurality of outstanding substantial technical features, and after the technical solution of the present invention is implemented, the significant technical progress is mainly reflected in that:.

The present embodiment takes a grass trimmer as an example for specific description. Referring to <FIG>, the grass trimmer <NUM> includes a link assembly <NUM>, a working mechanism <NUM> coupled to the front end of the link assembly <NUM>, and a power mechanism <NUM> coupled to the rear end of the link assembly <NUM>. For the front and rear ends here, the direction close to the area to be cut when the grass trimmer is operated is regarded as the front, and the direction of holding by an user or far away from the area to be cut is regarded as the rear, for example, the direction shown by the arrow in the figure is the front. In the present embodiment, the working mechanism <NUM> includes a housing, a cutting member disposed within the housing and rotating about an axis in a working plane, and a shield attached to the housing or to the link assembly. The grass trimmer in the present embodiment comprises a gasoline engine provided in a power mechanism <NUM>, and the gasoline engine provides power for the working mechanism <NUM>. In the power mechanism <NUM> is further provided a starting motor to realize the electric starting of the gasoline engine. In some documents, "starting motor" and "electric starting" are also referred to as "starter motor" and "electric start".

In other garden tools, the cutting member of the working mechanism may be moved linearly back and forth, rotated, or moved laterally by the staggered blades to perform the cutting action, although other mechanisms that do not perform the cutting action, such as a blowing-suction machine, are also possible. The power mechanism <NUM> comprises a gasoline engine which comprises an electric starting system, and power is provided through the gasoline engine to enable the power of the grass trimmer to be strong, and the grass trimmer can be used outdoors for a long time. Of course, the power mechanism may also be an electric motor and a rechargeable battery pack or AC power source to power the motor.

In the present embodiment, the link assembly <NUM> is provided with a battery pack <NUM>, and the battery pack <NUM> mainly functions to supply power to the starting motor of the electric starting system and to discharge power only when starting the gasoline engine. Further, the battery pack <NUM> can also supply power to an electronic control system of the gasoline engine, such as an electronic ignition system, an electronic fuel injection system, an electric throttle system, an automatic throttle system, and the like. Still further, the battery pack may be charged while the gasoline engine is operating.

In the present embodiment, the link assembly <NUM> further includes two handles, a handle assembly <NUM> extending in a direction substantially the same as the direction of the link assembly <NUM>, and an auxiliary handle <NUM> located in front of the handle assembly <NUM>, wherein the auxiliary handle <NUM> can be movably connected to the link assembly <NUM> for facilitating position adjustment. And the power mechanism <NUM> is disposed at the rear end of the handle assembly <NUM>, i.e., the handle assembly <NUM> is disposed between the auxiliary handle <NUM> and the power mechanism <NUM>, so that the user can grip it more stably during operation. In addition, the link assembly <NUM> includes a telescopic connecting rod, and by adjusting the telescopic connecting rod, the distance between the handle assembly <NUM> and the working mechanism <NUM> can be adjusted.

Referring to <FIG>, the handle assembly <NUM> extends generally in the front-rear direction and includes a front mechanical connection port <NUM> and a rear mechanical connection port <NUM>, the front mechanical connection port <NUM> being connected to the link assembly <NUM>, and the rear mechanical connection port <NUM> being directly or indirectly connected to the power mechanism <NUM>. The front mechanical connection port <NUM> and the rear mechanical connection port <NUM> are both configured as circular holes with centerlines of the two connection ports being collinear, as shown by axis X in <FIG>, so the extension direction of the handle assembly <NUM> coincides with the extension direction of the link assembly <NUM>, facilitating the link assembly <NUM> passing through both connection ports to simplify assembly of the handle assembly <NUM> and the link assembly <NUM>. The rear portion of the handle assembly <NUM> is configured as a gripping portion <NUM>, the gripping portion <NUM> extends along the front-rear direction for a preset length, and the gripping portion <NUM> is further provided with a handle rubber coating <NUM> to facilitate the grip of the user. The front upper portion of the handle assembly <NUM> includes an operating portion <NUM>, and the front lower portion of the handle assembly <NUM> includes a battery mounting portion <NUM>. The link assembly <NUM> and the power mechanism <NUM> are respectively connected to the front and back of the handle assembly <NUM>, and the control for the power mechanism <NUM> and the working mechanism <NUM> at the front end of the link assembly <NUM> can be realized through the operating portion <NUM>. Specifically, the operating portion <NUM> is provided with a plurality of keys, such as a throttle lock key <NUM> extending to the upper end of the gripping portion <NUM>, a throttle key <NUM> extending to the lower end of the gripping portion <NUM>, an ignition key <NUM> and a misfire key <NUM> arranged in parallel outside the housing of the operating portion <NUM>, a main switch key <NUM> located at one side of the ignition key <NUM> and the misfire key <NUM> and lower than the ignition key <NUM> and the misfire key <NUM>, and the like. That is, the operating portion <NUM> is disposed at least partially on the upper side of the link assembly in the extension direction of the link assembly <NUM>.

The handle assembly <NUM> includes a housing <NUM> having a Half structure, that is, the housing <NUM> is assembled by left and right housings which are substantially symmetrical, the operating portion <NUM> is disposed on the upper portion of the housing <NUM>, the battery mounting portion <NUM> is disposed on the lower portion of the housing <NUM> and is located obliquely below the operating portion <NUM> for mounting the battery pack <NUM>, the battery pack <NUM> is used for supplying power to the electric starting system, and the battery pack <NUM> may also supply power to the electronic ignition system, the electronic fuel injection system, and the like. The battery mounting portion <NUM> includes a battery pack mounting structure which includes a cavity <NUM> used for mounting the battery pack <NUM> and a control panel unit provided above the cavity <NUM>, wherein the cavity <NUM> and the control panel unit are both arranged on the lower side of the link assembly along the extension direction of the link assembly <NUM>, and the control panel unit is closer to the link assembly <NUM> than the cavity. The control panel unit has the functions of the starting motor control, the battery protection, and the like. Wherein, the cavity <NUM> is disposed on the housing <NUM> of the handle assembly <NUM>, the control panel unit is clamped in the housing <NUM>, the control panel unit includes a substrate <NUM>, an electronic element disposed on the upper surface of the substrate <NUM>, and an electrode holder <NUM> disposed on the lower surface of the substrate <NUM>, the electrode holder <NUM> has a body 320a fixed on the substrate <NUM> and clamping pins 320b extending downward along two ends of the body 320a, the clamping pins 320b extend into the cavity <NUM>, and the battery pack <NUM> is mounted in the cavity <NUM> and is electrically connected to the control panel unit by matching with the clamping pins 320b.

The front of the cavity <NUM> is provided with an opening <NUM>, the cavity <NUM> can be divided into a front cavity 350a communicating with the opening <NUM> and an opposite rear cavity 350b, the clamping pins 320b extend into the rear cavity 350b, and when the battery pack <NUM> is mounted, the battery pack is inserted into the front cavity 350a from the opening <NUM> and then enters the rear cavity 350b. In order to facilitate the mount and removal of the battery pack <NUM>, the front cavity 350a has an opening portion communicating with the outside in a direction perpendicular to the mounting direction of the battery pack <NUM>, the battery pack <NUM> is mounted in the cavity <NUM>, and a part of the side wall of the battery pack <NUM> is exposed from the opening portion. In the present embodiment, specifically, the front portions of the left and right side walls of the cavity <NUM> are free of solid side walls, so that the front ends of the left and right side walls of the battery pack <NUM> can be easily gripped in the mounted or dismounted state. In addition, the front ends of the left and right side walls of the battery pack <NUM> can be provided with rubber coating <NUM>, so that the battery pack <NUM> can be conveniently gripped and can be prevented from being accidentally collided.

Referring to <FIG>, the clamping pins 320b at the two ends of the body of the electrode holder <NUM> are correspondingly provided with a clamping pin first terminal <NUM> and a clamping pin second terminal <NUM> protruding into the cavity, the battery pack <NUM> is provided with a battery first terminal <NUM> and a battery second terminal <NUM> respectively matched with the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM>, the battery first terminal <NUM> and the battery second terminal <NUM> are configured as the positive and negative electrodes of the battery pack <NUM> and respectively disposed at the two sides of the end of the battery pack <NUM>, and because the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM> are connected to the substrate <NUM> through the body 320a, when the battery pack <NUM> is mounted in the cavity <NUM>, the clamping pin first terminal <NUM> is electrically connected to the battery first terminal <NUM>, and the clamping pin second terminal <NUM> is electrically connected to the battery second terminal <NUM>, thereby achieving the electrical connection between the battery pack <NUM> and the control panel unit.

Further, as shown in <FIG> and <FIG>, the left and right side walls of the cavity <NUM> are respectively provided with guiding protrusions <NUM> and <NUM> protruding into the cavity <NUM>, the left and right sides of the battery pack <NUM> are correspondingly provided with guiding grooves <NUM>, the battery pack is mounted into the cavity <NUM> through the matching guide of the guiding grooves <NUM> and the guiding protrusions <NUM> and <NUM>, wherein the guiding grooves <NUM> at the two sides respectively correspond to the positions of the battery first terminal <NUM> and the battery second terminal <NUM> so as to realize the more reliable mount of the battery pack <NUM>. In addition, the battery pack <NUM> includes an upper cover <NUM>, a lower cover <NUM> and battery cells <NUM>, wherein the upper cover <NUM> and the lower cover <NUM> are assembled together, the battery cells <NUM> are located in the upper cover <NUM> and the lower cover <NUM>, the upper cover <NUM> is provided with a charging port <NUM>, and the lower cover <NUM> is correspondingly provided with a charging electrode <NUM>, so that the standardization of the charging port is facilitated, and the charging is more convenient through the charging and discharging ports are respectively arranged.

Referring to <FIG> and <FIG> and <FIG> in cooperation, an arrangement direction of the battery cells <NUM> coincides with an extension direction of the handle assembly, that is, the axis of the battery cells <NUM> is substantially parallel to the extension direction of the handle assembly or the extension direction of the link assembly, and the battery cells <NUM> include at least two battery cells, in the present embodiment, the battery cells <NUM> are two <NUM>. 6V battery cells. And at least two battery cells <NUM> are arranged along the lateral direction of the handle assembly, where the side facing the working surface when the user grips the handle assembly is the lower side, and the other side is the upper side, and the direction perpendicular to the upper and lower sides and the extension direction of the handle assembly is the lateral direction, so that the battery pack <NUM> has a thinner thickness (about the diameter of one battery cell) in the upper and lower directions, that is, the dimension of the battery pack <NUM> in the upper and lower directions is smaller than that in the lateral direction. And the battery first terminal <NUM> and the battery second terminal <NUM> are respectively disposed at the two sides of the battery pack, so that the battery pack and the mounting structure thereof are thinner to reduce the overall size of the handle assembly. In the present embodiment, the rear wall of the cavity <NUM> is provided with a cavity third terminal <NUM>, the corresponding end of the battery pack <NUM> adjacent to the battery first terminal <NUM> and the battery second terminal <NUM> is provided with a battery third terminal <NUM> matched with the cavity third terminal <NUM>, and the control panel unit is connected to a detection module in the battery pack <NUM>, for example, a temperature measurement module in the battery pack <NUM>, through the cavity third terminal <NUM> and the battery third terminal <NUM>. In addition, the lower wall of the cavity <NUM> is provided with a third guiding protrusion <NUM>, the corresponding lower portion of the battery pack <NUM> is provided with a third groove portion (not shown) matched with the third guiding protrusion <NUM>, the third guiding protrusion <NUM> corresponds to the position of the cavity third terminal <NUM> along the mounting direction of the battery pack <NUM>, and the corresponding third groove portion corresponds to the position of the battery third terminal <NUM>, so that reliable connection between the cavity third terminal <NUM> and the battery third terminal <NUM> when the battery pack <NUM> is mounted is facilitated.

Referring to <FIG>, in order to achieve the lock of the battery pack in the cavity, the battery pack mounting structure further includes an operating mechanism, the operating mechanism is disposed at the lower portion of the cavity <NUM>, the operating mechanism includes an operating key <NUM> and a reset member <NUM> pressing against the operating key <NUM>, the battery pack <NUM> is provided with a groove portion <NUM> matched with the operating key <NUM>, and the operating key <NUM> is clamped with the groove portion <NUM> under the action of the reset member <NUM> to lock the battery pack <NUM> in the cavity <NUM>. Specifically, the operating key <NUM> includes a hook portion <NUM> clamped with the groove portion <NUM>, a pressing portion <NUM> away from the hook portion <NUM>, and a rotating shaft <NUM> located between the hook portion <NUM> and the pressing portion <NUM>, the reset member <NUM> outwardly presses against the pressing portion <NUM>, and under the action of the rotating shaft <NUM>, the hook portion <NUM> inwardly maintains clamping with the groove portion <NUM>, so that the battery pack <NUM> is locked relative to the cavity <NUM>.

Referring to <FIG>, when the battery pack <NUM> needs to be dismounted, a force is inwardly applied to the pressing portion <NUM>, the pressing portion <NUM> overcomes the acting force of the reset member <NUM> and pivots under the action of the rotating shaft <NUM> to drive the hook portion <NUM> to be separated from the groove portion <NUM>, so that the battery pack <NUM> is unlocked relative to the cavity <NUM>, and in order to facilitate taking out the battery pack, an elastic member is provided on the rear wall of the cavity <NUM>, the battery pack <NUM> is mounted in the cavity, and the elastic member is compressed; when the battery pack <NUM> is unlocked, the elasticity of the elastic member is released, namely, under the action of the elastic member, the battery pack <NUM> is popped out of the cavity <NUM>, so that the battery pack can be dismounted by one hand. Preferably, in the present embodiment, the cavity third terminal <NUM> and the elastic member may be constructed as the same member, such as a spring, so that the assembly is convenient to reduce the cost. Of course, the elastic member and the cavity third terminal <NUM> may be separately provided according to actual requirements.

In addition, when the battery pack <NUM> is not mounted, the hook portion <NUM> protrudes into the cavity <NUM> under the action of the reset member <NUM>, in order to achieve the mount of the battery pack with one hand, one surface of the hook portion <NUM> facing the opening <NUM> of the cavity <NUM> is configured as a guiding surface, the guiding surface can be a slope, an arc surface or a curved surface and the like which can make the force of the battery pack <NUM> moving into the cavity <NUM> generate a downward component force, with the movement of the battery pack <NUM> into the cavity <NUM>, the hook portion <NUM> moves outwards and drives the pressing portion <NUM> to overcome the action of the reset member <NUM> through the rotating shaft <NUM>, the battery pack <NUM> is smoothly mounted into the cavity <NUM>, and when the groove portion <NUM> corresponds to position of the hook portion <NUM>, the hook portion <NUM> is clamped into the groove portion <NUM> under the action of the reset member <NUM> to lock the battery pack <NUM>. In the present embodiment, the reset member <NUM> is preferably a compression spring, one end of which abuts against the housing and the other end of which abuts against the pressing portion. Certainly, the compression spring can also be provided as an abutting hook portion, and the reset member can also be provided as a torsional spring, and the torsional spring can be sleeved on the rotating shaft, one end is fixed relative to the housing, and the other end abuts against the pressing portion or the hook portion.

It can be seen from the above description that, according to the invention, the battery pack is mounted to the control panel unit, so that the battery pack is fixed relative to the substrate, and is not affected by vibration when using the tool, therefore the battery pack and the control panel unit can be protected, and tool failure caused thereby can be prevented from being unavailable, and the battery pack has a compact mounting structure, and can also be disassembled and assembled by one hand, so that it is more convenient for users. Through arranging the battery pack mounting structure at the handle assembly, and also arranging the operating portion at the handle assembly, the operation of the tool can be carried out when be gripped, and the battery pack, the control panel unit and the operating portion are arranged together, so that the trouble of wiring is reduced, and the assembling is more simple and convenient, the cost is low and the use is reliable. Through arranging the handle assembly between the working mechanism and the power mechanism, the battery pack and the control panel unit can be protected from the vibration of the power mechanism and the resulting heat, and the handle assembly is located at the front of the power mechanism, and the opening of the cavity where the battery pack is mounted faces the working mechanism when mounting, so that it will not be affected by the waste gas produced by that power mechanism, thereby reducing the failure of the garden tool caused by the vibration and heat, so as to make the use more reliable and the services life of the garden tool longer.

In the present embodiment, a grass trimmer is taken as an example for explanation, but other garden tools, such as a brush cutter, an edge trimmer, a chain saw, a pruning shear, etc., are also possible.

As shown in <FIG>, the present embodiment is described by taking an electric starting gasoline blowing-suction machine as an example. In autumn, there are often a lot of scattered fallen leaves, which brings a great deal of problem for the environment of family courtyard, especially after raining, the leaves are mixed with muddy water and pasted on the ground, bringing a lot of trouble for cleaning. The electric starting gasoline blowing-suction machine of the embodiment is an equipment capable of cleaning courtyards or surrounding environments, the working principle of which is that an engine of a gasoline engine is started through working of a battery, the engine enables a crankshaft to rotate at a high speed and drives an impeller to rotate, and therefore air suction or air blowing is generated, and the purpose of cleaning is achieved.

Specifically, as shown in <FIG>, the blowing-suction machine <NUM> includes a machine body <NUM> which is provided with an working mechanism and a power mechanism, wherein the working mechanism includes a volute <NUM> and an impeller disposed in the volute <NUM>, an air inlet <NUM> is disposed on one side of the volute <NUM>, and an air outlet <NUM> is disposed at the front portion of the volute <NUM>. In the present embodiment, the working mechanism of the blowing-suction machine <NUM> includes a centrifugal fan, and the air outlet direction of the air outlet <NUM> is perpendicular to the air inlet direction of the air inlet <NUM>; in other embodiments, the working mechanism of the blowing-suction machine <NUM> may also be an axial-flow fan, and the air outlet direction of the air outlet <NUM> is parallel to the air inlet direction of the air inlet <NUM>. The above mentioned power mechanism comprises a gasoline engine and a starting motor, wherein the gasoline engine provides power for the working mechanism, and the starting motor is used for realizing the electric starting of the gasoline engine. In the present embodiment, the power is provided by the gasoline engine to make the power of the blowing-suction machine strong, so that the blowing-suction machine can be used outdoors for a long time; of course, the power mechanism may be a motor, and a rechargeable battery pack, an AC power supply, or the like for supplying power to the motor. Further, the machine body <NUM> is provided with a handle assembly <NUM> which comprises a housing, and the housing is provided with a gripping portion <NUM>, an operating portion <NUM> and a battery mounting portion, wherein the gripping portion <NUM> extends in the air outlet direction, and the gripping portion <NUM> is provided with a handle rubber coating to make a user can grip conveniently; the operating portion22 is positioned at the front end of the gripping portion <NUM>, and the operating portion22 is provided with an activating switch <NUM> for activating the blowing-suction machine and a starting switch <NUM> for starting the operation of the blowing-suction machine; the battery mounting portion <NUM> is disposed at one end of the housing close to the air outlet <NUM> and located obliquely below the operating portion <NUM>, a battery pack <NUM> is detachably mounted on the battery mounting portion <NUM>, and the battery pack <NUM> is used for supplying power to the starting motor. In addition, the battery pack <NUM> can also supply power to an electronic control system of the gasoline engine, such as an electronic ignition system, an electronic fuel injection system, an electronic throttle system, an automatic throttle system, and the like. Still further, the battery pack <NUM> may also be charged while the gasoline engine is operating.

The starting process of the blowing-suction machine is as follows: the battery pack <NUM> provides direct current power supply for the starting motor, the starting motor rotates at high speed to drive the gear assembly in the machine body <NUM> to rotate, the gear assembly continuously applies pressure to the scroll spring in the machine body <NUM>, namely, the scroll spring continuously stores kinetic energy of the starting motor, once the elastic force provided by the scroll spring is larger than the resistance of the crankshaft in the machine body <NUM>, the scroll spring releases energy to the crankshaft through the clutch mechanism, so that the crankshaft is driven to rotate, and the electric starting process of the gasoline engine is realized. Once the gasoline engine is started, the crankshaft rotates at a high speed to drive the impeller to work, and meanwhile, the clutch mechanism is separated to stop the speed reducing mechanism.

It should be noted that the specific structure of the handle assembly <NUM> provided in the present embodiment is similar to the structure of the handle assembly <NUM> in Embodiment <NUM>, and the same parts will not be described again in the present embodiment, and only the differences will be described below.

In the present embodiment, the cavity <NUM> and the control panel unit are both disposed above the air outlet <NUM> and below the operating portion <NUM>. The cavity <NUM> is disposed in the battery mounting portion <NUM>, and the battery pack <NUM> can be inserted into the cavity <NUM> or popped of the cavity <NUM> along the extension direction of the gripping portion <NUM>. However, the existing battery pack mounting structure has no buffer when popping up, and if a user cannot grip the battery pack <NUM> in time in the process of popping up the battery pack <NUM>, the battery pack <NUM> is easily dropped and damaged, and therefore, the battery pack <NUM> in the present embodiment is provided with a pop-up buffer structure, so that the battery pack can be effectively prevented from being popped up at one time. Specifically, as shown in <FIG>, in the present embodiment, the groove portion <NUM> is provided as a first groove <NUM> and a second groove <NUM>, wherein the first groove <NUM> is relatively far away from the battery third terminal <NUM>, the second groove <NUM> is relatively close to the battery third terminal <NUM>, and both the first groove <NUM> and the second groove <NUM> can cooperate with the hook portion. Here, the depth of the first groove <NUM> is greater than that of the second groove <NUM>, so that when the hook portion <NUM> is clamped into the first groove <NUM>, the battery pack <NUM> can be locked relative to the cavity <NUM>, and at this time, the battery pack <NUM> cannot be drawn out from the cavity <NUM>; when the battery pack <NUM> is unlocked relative to the cavity <NUM>, the battery pack <NUM> is popped out of the cavity <NUM>, the hook portion <NUM> can be clamped into the second groove, and the battery pack <NUM> can be manually drawn out by the user.

Further, as shown in <FIG>, the side wall of the first groove <NUM> away from the protruding end of the battery pack <NUM> is a plane, the included angle α between this side wall and the top side surface <NUM> of the battery pack <NUM> is not greater than <NUM>°, or this side wall is a curved surface, then the minimum included angle between the tangent plane of this side wall and the top side surface <NUM> of the battery pack <NUM> is not greater than <NUM>°; this arrangement can ensure the clamping connection of the hook portion <NUM> and the first groove <NUM>, and prevent the battery pack from slipping; for example, as shown in <FIG>, the angle between the front portion of the first groove <NUM> and the top side surface <NUM> of the battery pack may be set to an acute angle, and the angle between the rear portion of the first groove <NUM> and the top side surface <NUM> of the battery pack may be set to an acute angle. The side wall of the second groove <NUM> away from the protruding end of the battery pack <NUM> is a plane, the included angle β between this side wall and the top side surface <NUM> of the battery pack <NUM> is not less than <NUM>°, or this side wall is a curved surface, then the maximum included angle between the tangent plane of this side wall and the top side surface <NUM> of the battery pack <NUM> is not less than <NUM>°; in case of this arrangement, on one hand, the battery pack <NUM> can be clamped in the cavity <NUM> and cannot fall off, and on the other hand, an operator can draw out the battery pack <NUM> from the cavity <NUM> by applying a certain action; for example, as shown in <FIG>, the angle between the front portion of the second groove <NUM> and the top side surface <NUM> of the battery pack may be set to an acute angle, and the angle between the rear portion of the second groove <NUM> and the top side surface <NUM> of the battery pack may be set to an obtuse angle.

The working process of the pop-up buffer structure in the present embodiment is as follows: when the battery pack <NUM> needs to be detached, a force is inwardly applied to the pressing portion <NUM>, the pressing portion <NUM> overcomes the acting force of the reset member <NUM>, and meanwhile, the pressing portion <NUM> pivots under the action of the rotating shaft <NUM> to drive the hook portion <NUM> to be separated from the first groove <NUM>, so that the battery pack <NUM> is unlocked relative to the cavity <NUM>; when the battery pack <NUM> is unlocked, the elastic force of the elastic member on the rear wall of the cavity <NUM> is released, that is, the battery pack <NUM> is popped out of the cavity <NUM> under the action of the elastic member, the second groove <NUM> on the battery pack <NUM> is clamped with the hook portion <NUM> in the popping process, so that the battery pack <NUM> is prevented from being completely separated from the cavity <NUM>, and then the user can manually pull out the battery pack <NUM> from the cavity <NUM>.

Further, due to the characteristic of the insertion direction of the battery pack <NUM>, in the process of inserting the battery pack <NUM> into the cavity <NUM>, the left and right sides of the battery pack <NUM> generate a force along the insertion direction of the battery pack <NUM> to the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM>, so that the electrode holder <NUM> is easy to loosen, and meanwhile, in the process of inserting and pulling the battery pack <NUM> for multiple times, welding spots between the clamping pin first terminal <NUM>, the clamping pin second terminal <NUM> and the substrate <NUM> are easy to damage and loosen. Therefore, the present embodiment further improves the control panel unit and the mounting structure thereof. The details are as follows:
as shown in <FIG>, the control panel unit includes a substrate <NUM>, an electronic element disposed on the upper surface of the substrate <NUM>, and an electrode holder <NUM> disposed on the lower surface of the substrate <NUM>, the electrode holder <NUM> having a body 320a fixed to the substrate <NUM> and clamping pins 320b extending downward along both ends of the body 320a. As shown in <FIG>, in the present embodiment, the electrode holder <NUM> is mounted in a housing <NUM>, the housing <NUM> is internally provided with a recess portion <NUM>, and the two clamping pins 320b of the electrode holder <NUM> are clamped in the recess portion <NUM>, so as to further prevent the electrode holder <NUM> from shaking during the inserting and pulling of the battery pack <NUM>. The two clamping pins 320b of the electrode holder <NUM> extend into the cavity <NUM>, the clamping pin first terminal <NUM> is mounted on the clamping pin 320b at one end, the clamping pin second terminal <NUM> is mounted on the clamping pin 320b at the other end, and the battery pack <NUM> is mounted in the cavity <NUM> and electrically connected with the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM>. Further, the electrode holder <NUM> of the present embodiment is an integrated structure, in which the body 320a and the clamping pins 320b at two ends thereof form a "U" shape, and this arrangement enables the battery first terminal <NUM> and the battery second terminal <NUM> on the battery pack <NUM> to be respectively and correspondingly tightly connected with the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM> at two sides of the electrode holder <NUM>, so as to improve the connection reliability; on the other hand, the U-shaped structure has an elastic shock-absorbing effect, and prevents the battery pack <NUM> from being disconnected from the control panel unit due to vibration during use. Meanwhile, the above mentioned integral U-shaped structure can meet the requirement of better safety performance by using the least materials, so that the material cost is saved. Preferably, the electrode holder <NUM> of the present embodiment is made of flame retardant materials, such as plastic, rubber, and glass, so as to ensure that the electrode holder <NUM> has good flame retardant property.

In the present embodiment, the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM> are respectively provided with a first fixing member <NUM>, the clamping pins 320b at two ends of the body 320a are respectively provided with a terminal mounting slot <NUM>, and each terminal mounting slot <NUM> is provided with a second fixing member <NUM>. Through the cooperation of the first fixing members <NUM> and the second fixing members <NUM>, the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM> are firmly fixed on the clamping pin 320b, thereby preventing the two terminals from shaking under the acting force of battery pack <NUM>. Preferably, the above mentioned first fixing members <NUM> are positioning holes formed at the bottom of the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM>, and the second fixing members <NUM> are positioning posts protruding from the inner sides of the clamping pins 320b, so that the reliability of terminal fixing is ensured and the convenience of mounting is improved by the matching between the positioning holes and the positioning posts. The upper end of the above mentioned clamping pin first terminal <NUM> is provided with a first electrode inserting piece <NUM>, the upper end of the clamping pin second terminal <NUM> is provided with a second electrode inserting piece <NUM>, the electrode holder <NUM> is provided with a through hole for the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM> to pass through, and the substrate <NUM> is provided with an electrode hole <NUM> at the position corresponding to the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM>. The first electrode inserting piece <NUM> and the second electrode inserting piece <NUM> respectively penetrate through the corresponding through holes and electrode holes <NUM> and then are connected to the substrate <NUM> by welding, and the positioning accuracy of the electrode inserting pieces is improved due to this arrangement. In order to improve the welding strength, the shapes of the first electrode inserting piece <NUM> and the second electrode inserting piece <NUM> are preferably in a fishfork shape, and the fishfork shaped structure can be welded to the substrate <NUM> at two points through two fork legs, so that the welding between the electrode inserting pieces and the substrate is firmer. The lower end of the clamping pin first terminal <NUM> is provided with a first contacting piece <NUM> for abutting against the battery first terminal <NUM>; the lower end of the clamping pin second terminal <NUM> has a second contacting piece <NUM> for abutting against the battery second terminal <NUM>.

Further, the body 320a of the electrode holder <NUM> is fixedly connected to the substrate <NUM> by a third fixing element <NUM>, in the present embodiment, the third fixing element <NUM> is preferably a rivet, and the substrate <NUM> and the electrode holder <NUM> are provided with rivet holes 326a for inserting the rivet. The riveting connection mode ensures the firm and stable connection of the electrode holder <NUM> and the substrate <NUM>. Further, a substrate positioning hole <NUM> may also be provided on the substrate <NUM>, and a substrate positioning post 312a is provided at the top end of the electrode holder <NUM>, so as to realize positioning of the electrode holder <NUM> and the substrate <NUM>, and ensure mounting accuracy. In the present embodiment, the positioning between the substrate <NUM> and the electrode holder <NUM> is realized by the matching between the substrate positioning hole <NUM> and the substrate positioning post 312a, the fixing between the electrode holder <NUM> and the substrate <NUM> is realized by the matching between the rivet and the rivet hole 326a, and the electrode holder <NUM> is firmly fixed on the substrate <NUM> by the combined action of the rivet and the substrate positioning post 312a, so as to prevent the loosening of the electrode welding point during the inserting and pulling of the battery.

In the embodiment, the electrode holder <NUM> is fixed on the substrate <NUM> by fixing the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM> on the electrode holder <NUM>, so that the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM> can keep the relative positions stable even when being subjected to the impact force of the battery pack <NUM>, and the electrode inserting piece is prevented from shaking in the electrode hole <NUM> to cause the welding point to loosen. Furthermore, in the present embodiment, the cavity third terminal <NUM> is provided with a wire portion <NUM> having a certain flexibility, the cavity third terminal <NUM> is connected to the substrate <NUM> through the wire portion <NUM>, and the wire portion <NUM> can absorb vibration, so as to better solve the problem of solder joint looseness between the cavity third terminal <NUM> and the substrate <NUM> due to vibration. In addition, the cavity third terminal <NUM> is further provided with a spring portion <NUM> which not only can serve as a functional component for popping up the battery pack <NUM>, but also can serve as a functional component for signal transmission, so that the assembly of the device is facilitated, and the manufacturing cost is reduced.

In the present embodiment, as shown in <FIG>, the battery pack <NUM> is substantially hexahedral in shape, and includes a battery pack bottom side surface <NUM> and a battery pack top side surface <NUM> which are provided to face each other, a battery pack front side surface <NUM> and a battery pack rear side surface <NUM> which are provided to face each other, and a battery pack left side surface <NUM> and a battery pack right side surface <NUM> which are provided to face each other. The battery pack <NUM> includes a battery pack housing and battery cells <NUM> mounted in the battery pack housing. Specifically, the battery pack housing is formed by at least an upper cover <NUM> and a lower cover <NUM> that are connected in a snap-fit manner. It should be noted that, in the present embodiment, the bottom side surface <NUM> is disposed on the upper cover <NUM>, and the top side surface <NUM> is disposed on the lower cover <NUM>. The battery cells <NUM> are substantially cylindrical, and the battery cells <NUM> are mounted in the battery pack housing, wherein the axial directions of two battery cells <NUM> are arranged along the front-rear direction of the battery pack <NUM>, the radial directions of the two battery cells <NUM> are arranged along the left-right direction of the battery pack <NUM>, and the two battery cells <NUM> are arranged side by side along the left-right direction of the battery pack (that is, the axis of the battery cells <NUM> is consistent with the extension direction of the gripping portion <NUM>, and the arrangement direction of the two battery cells <NUM> is perpendicular to the extension direction of the gripping portion <NUM>), and this arrangement makes the battery pack <NUM> have a smaller thickness in the up-down direction. In addition, a battery control panel <NUM> is further provided in the battery pack housing behind the battery cells <NUM>.

In the present embodiment, referring to <FIG>, the battery pack <NUM> is provided with a discharging port and a charging port <NUM>, the discharging port is specifically a battery first terminal <NUM> and a battery second terminal <NUM> which are arranged at the left and right sides of the battery pack <NUM>, and the battery first terminal <NUM> and the battery second terminal <NUM> are both arranged near the rear portion of the battery pack <NUM> and are respectively electrically connected with the battery control panel <NUM>. With the above arrangement, on one hand, the battery first terminal <NUM> and the battery second terminal <NUM> are respectively located at two sides of the battery pack <NUM>, and since the distance between the two terminals is large, the two terminals are difficult to be in direct contact under an unintended condition, and short circuit between the battery first terminal <NUM> and the battery second terminal <NUM> is prevented to the maximum extent; on the other hand, since the battery control panel <NUM> is disposed at the rear portion of the battery pack <NUM>, the battery first terminal <NUM> and the battery second terminal <NUM> can be directly drawn out from the left and right ends of the battery control panel <NUM>, thereby avoiding complicated wiring. For the convenience of identification, a discharging negative electrode mark 521a is provided on the left side surface of the battery pack <NUM> near the battery first terminal <NUM>; a discharging positive electrode mark 522a is provided on the right side surface of the battery pack <NUM> near the battery second terminal <NUM>. In other embodiments, the positions of the battery first terminal <NUM> and the battery second terminal <NUM> may be switched according to actual situations.

In the present embodiment, referring to <FIG>, <FIG> and <FIG>, the charging port <NUM> is provided on the bottom side surface <NUM> of the battery pack <NUM>. The charging port <NUM> includes a charging negative electrode port <NUM> and a charging positive electrode port <NUM> which are electrically connected to the battery control panel <NUM>, respectively. Wherein, the charging negative electrode port <NUM> and the charging positive electrode port <NUM> are disposed at an interval, and the outer contour of the charging negative electrode port <NUM> is different from the outer contour of the charging positive electrode port <NUM>. The charging terminal matched with the charging port <NUM> in an insertion mode has a charging positive terminal and a charging negative terminal which are arranged at an interval, and the outer contour of the charging positive terminal is different from the outer contour of the charging negative terminal. This design not only prevents the negative electrode and the positive electrode from being inserted reversely, but also effectively prevents the short circuit from occurring between the charging positive electrode port <NUM> and the charging negative electrode port <NUM>. Further, the charging port <NUM> is located near the rear side <NUM> of the battery pack <NUM>, such that the charging port <NUM> is located near the battery control panel <NUM>, thereby avoiding complicated wiring.

Further, the battery pack <NUM> is further provided with at least one temperature sensor <NUM> electrically connected to the battery control panel <NUM>, respectively. In the present embodiment, the temperature sensor <NUM> is disposed between the two battery cells <NUM>, and is attached to the surface of any one of the battery cells <NUM>. In other embodiments, each battery cell <NUM> is provided at least one temperature sensor <NUM> as needed, and the temperature sensors <NUM> are connected to the battery control panel <NUM> through wires. The rear side surface <NUM> of the battery pack <NUM> is provided with the battery third terminal <NUM>, and since battery the third terminal <NUM> is close to the battery control panel <NUM>, the battery third terminal <NUM> can be directly led out from the battery control panel <NUM>, thereby avoiding complicated wiring. Correspondingly, the inner wall of the rear side of the cavity <NUM> is provided with a third cavity terminal <NUM> matched with the battery third terminal <NUM>.

After the battery pack <NUM> is inserted into the cavity <NUM>, the battery first terminal <NUM> and the battery second terminal <NUM> are respectively and correspondingly electrically connected with the clamping pin first terminal <NUM> and the clamping pin second terminal <NUM>, so that the battery pack <NUM> is electrically connected with the starting motor through the control panel unit and the cable assembly to supply power to the starting motor and other electronic components; the battery third terminal <NUM> is electrically connected to the control panel unit through the cavity third terminal <NUM>, and the control panel unit directly controls or indirectly through the battery control panel <NUM> controls the operating parameters of the battery pack <NUM> through the temperature signal collected by the battery third terminal <NUM>.

In the blowing-suction machine, the power assembly includes a gasoline engine, so that it is difficult to avoid large vibration during operation. If the fit clearance between the battery pack <NUM> and the cavity <NUM> is designed to be very small, the battery pack <NUM> can be prevented from shaking relative to the cavity <NUM>, so that the abrasion of the discharging port of the battery pack is avoided, but the problem that the battery pack <NUM> is difficult to insert and pull is caused. If the fit clearance between the battery pack <NUM> and the cavity <NUM> is not designed to be small enough, the battery pack <NUM> can be inserted and pulled smoothly, but the service life of the battery pack <NUM> is seriously affected by the abrasion of the discharging port of the battery pack.

In view of the above, the battery pack <NUM> further includes a vibration damper made of an elastic material in the present embodiment. As shown in <FIG>, in order to absorb the vibration of the battery pack <NUM> in the cavity <NUM> along the left-right direction, the left side surface of the battery pack <NUM> and the right side surface of the battery pack <NUM> are respectively provided with at least two first vibration dampers <NUM>; in order to absorb the vibration of the battery pack <NUM> along the up-down direction in the cavity <NUM>, the top side surface <NUM> of the battery pack <NUM> is provided with at least one second vibration damper <NUM>. Specifically, referring to <FIG>, two first vibration dampers <NUM> are symmetrically disposed at the left side surface of the battery pack <NUM> and the right side surface of the battery pack <NUM>. Taking the first damping member <NUM> on the left as an example, the first damping member <NUM> is embedded in the left side surface of the lower cover <NUM>, and includes a first outer end 571a at least partially protruding from the outer surface of the lower cover <NUM>, and further includes a first inner end 571b at least partially protruding from the inner surface of the lower cover <NUM>. The inner end surface of the first inner end 571b abuts against the battery cells <NUM>; when the battery pack <NUM> is loaded into the cavity <NUM>, the outer end face of the first outer end 571a abuts against the inner wall of the cavity <NUM>, and at this time, the first vibration damper <NUM> is sandwiched between the inner wall of the cavity <NUM> and the battery cells <NUM>. Further, the first outer end 571a is smaller than the first inner end 571b, which can ensure that the first vibration damper <NUM> will not fall off the battery pack <NUM>. Furthermore, the distance between the first vibration damper <NUM> and the front side surface <NUM> of the battery pack <NUM> is D1, the distance between the first vibration damper <NUM> and the rear side surface <NUM> of the battery pack <NUM> is D2, and D1 and D2 are substantially equal, the values of D1/D2 can be set to be <NUM> to <NUM>, and the preferable values of D1/D2 are <NUM> to <NUM>.

Referring to <FIG>, <FIG>, at least one second vibration damper <NUM> is embedded in the lower cover <NUM>, and includes a second outer end 572a at least partially protruding from the outer surface of the lower cover <NUM>, and further includes a second inner end 572b at least partially protruding from the inner surface of the lower cover <NUM>. Further, the inner end surface of the second inner end 572b is provided with an arc surface corresponding to the radian of the outer surface of the battery cells <NUM>. The arc surface abuts against the battery cells <NUM>; when the battery pack <NUM> is mounted into the cavity <NUM>, the outer end face of the second outer end 572a abuts against the inner wall of the cavity <NUM>, and at this time, the second vibration damper <NUM> is sandwiched between the inner wall of the cavity <NUM> and the battery cells <NUM>. Further, the second outer end 572a is smaller than the second inner end 572b, which can ensure that the second vibration damper <NUM> will not fall off the battery pack <NUM>. Further, the second vibration damper <NUM> is disposed between the groove portion <NUM> and the rear side surface <NUM> of the battery pack <NUM>. In the present embodiment, two second vibration dampers <NUM> are provided, and arc surfaces thereof are provided substantially directly below the two battery cells <NUM>, respectively.

In the present embodiment, through providing the vibration dampers, under the situation of guaranteeing smooth insertion and pulling of the battery pack <NUM>, the vibration of battery pack <NUM> in the course of the work is effectively reduced, thereby preventing that battery pack <NUM> from shaking relative to the cavity <NUM>, and avoiding the wearing and tearing of the discharging port of the battery pack <NUM>, so that the service life of the battery pack <NUM> is improved.

The present embodiment is described by taking a blowing-suction machine as an example, of course, the buffer pop-up structure of the battery pack <NUM> in the handle assembly <NUM> provided above in this embodiment, the connection structure between the electrode holder <NUM> and the substrate <NUM>, the clamping pin first terminal <NUM>, the clamping pin second terminal <NUM> and the cavity third terminal <NUM>, the structure of the battery pack <NUM> itself, the mounting structure of the battery pack <NUM> and the cavity <NUM>, and the specific arrangement of the charging port <NUM>, the vibration damper, and the temperature sensor <NUM>, can also be used in the grass trimmer in Embodiment <NUM> or other garden tools, such as a brush cutter, an edge trimmer, a chain saw, a pruning shear, etc..

Claim 1:
A handle assembly (<NUM>) for a garden tool, comprising a housing (<NUM>), wherein the housing (<NUM>) is provided with a gripping portion (<NUM>); a cavity (<NUM>) for detachably mounting a battery pack (<NUM>); an operating portion (<NUM>) disposed at one end of the gripping portion (<NUM>) close to the battery pack (<NUM>); and a control panel unit which is arranged internally below the operating portion (<NUM>), characterized in that the battery pack (<NUM>) is configured to be inserted into the cavity (<NUM>) along the extension direction of the gripping portion (<NUM>); the control panel unit includes a substrate (<NUM>) and an electrode holder (<NUM>) disposed on the lower surface of the substrate (<NUM>); the battery pack (<NUM>) includes at least two battery cells (<NUM>), wherein axes of the at least two battery cells (<NUM>) are consistent with the extension direction of the gripping portion (<NUM>) and the arrangement direction of the at least two battery cells (<NUM>) is perpendicular to the extension direction of the gripping portion (<NUM>); and terminals (<NUM>, <NUM>) that are matched with the electrode holder (<NUM>) to achieve electrical connection with the substrate (<NUM>) are respectively provided on two sides of the battery pack (<NUM>) side by side along the at least two battery cells (<NUM>); and the battery pack (<NUM>) further comprises a vibration damper (<NUM>, <NUM>) made of elastic material.