Patent Description:
In the related art, the rotation driving mechanism of the existing air supply apparatus realizes the head-shaking function for an air supply apparatus through a crank and rocker mechanism. But the size of the rotation driving mechanism is large, which makes the air supply apparatus unsightly. The crank and rocker mechanism has a pole, greatly limiting the shaking angle. Comparable driving mechanisms for realizing the head-shaking of an air supply apparatus are disclosed in <CIT>, <CIT>, <CIT> and <CIT>.

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, in the first aspect, the present invention provides a rotation driving mechanism for realizing a head-shaking of an air supply apparatus. The size of the rotation driving mechanism of the air supply apparatus is small, and after a rotary driving mechanism is mounted on the air supply apparatus, the air supply apparatus can be more pleasing to the eye and the shaking angle of the rotary component of air supply apparatus can also be enlarged.

A second aspect of the present invention proposes an air supply apparatus.

The rotation driving mechanism for realizing the head-shaking of an air supply apparatus according to the present invention comprises a fixed bracket; a rotary bracket, wherein the rotary bracket is sleeved on the fixed bracket and is rotatable with respect to the fixed bracket; and a driving member, wherein the driving member is provided on the fixed bracket, and the driving member drives the rotary bracket to rotate. The rotation driving mechanism comprises additionally a first transmission member, the rotary bracket being provided with a second transmission member drivingly coordinating with the first transmission member, and the first transmission member being connected to a driving shaft of the driving member, wherein the fixed bracket comprises a body portion, the body portion defines a mounting groove, a side wall of the mounting groove has a first through hole, the first transmission member is located in the mounting groove, and the first transmission member drivingly coordinates with the second transmission member via the first through hole.

According to the rotation driving mechanism for an air supply apparatus according to the present invention, compared with the prior art, by means of the coordination of the fixed bracket, the rotary bracket, and the driving member, the size of the rotation driving mechanism can be reduced; after the rotation driving mechanism is mounted on the air supply apparatus, the air supply apparatus can have a better appearance; moreover, the rotation angle of the rotary bracket with respect to the fixed bracket is not limited, and thus, the shaking angle of the rotary component of the air supply apparatus can be enlarged. Finally, the rotation driving mechanism comprises a damper, wherein the side wall of the mounting groove has a second through hole, the damper is provided on the fixed bracket and is located in the mounting groove, and the damper drivingly coordinates with the second transmission member via the second through hole.

In some embodiments of the present invention, the second transmission member is provided on the inner wall surface of the rotary bracket opposite to the fixed bracket.

In some embodiments of the present invention, the first transmission member is a gear and the second transmission member is a rack.

In some embodiments of the present invention, the rotation driving mechanism for an air supply apparatus further comprises: a support bearing, the support bearing being supported between the fixed bracket and the rotary bracket.

In some embodiments of the present invention, the outer wall surface of a bottom wall of the mounting groove is provided with a mounting post, an inner ring of the support bearing is sleeved on the mounting post, and an outer ring of the support bearing is connected to the rotary bracket.

In some embodiments of the present invention, the rotation driving mechanism for an air supply apparatus further comprises: a friction plate, wherein the rotary bracket defines a fitting groove, the bottom wall of the fitting groove is provided with a third through hole, and the friction plate is sleeved on the mounting post and abuts against an outer end of the third through hole.

In some embodiments of the present invention, the rotation driving mechanism for an air supply apparatus further comprises: a snap spring, wherein a circumferential wall surface of the mounting post is provided with a positioning groove, the snap spring is provided in the positioning groove, and the snap spring abuts an end surface of the friction plate away from the third through hole.

In some embodiments of the present invention, a first mounting portion is provided on the edge of the open end of the mounting groove and the driving member is provided with a second mounting portion connected to the first mounting portion.

In some embodiments of the present invention, the first mounting portion is provided with a first positioning portion and the second mounting portion is provided with a second positioning portion connected to the first positioning portion.

In some embodiments of the present invention, the rotation driving mechanism for an air supply apparatus further comprises: a Hall assembly, wherein the Hall assembly comprises a Hall plate and a magnet, and either the Hall plate or the magnet is provided on the fixed bracket, and the other of the Hall plate and the magnet is provided on the rotary bracket.

In some embodiments of the present invention, the fixed bracket is provided with a first limiting structure and the rotary bracket is provided with a second limiting structure coordinating with the first limiting structure in limiting.

In some embodiments of the present invention, a central axis of the driving member, a central axis of the fixed bracket, and a central axis of the rotary bracket coincide.

In some embodiments of the present invention, a central axis of the fixed bracket and a central axis of the rotary bracket coincide, and a central axis of the driving member and the central axis of the fixed bracket do not coincide.

In some embodiments of the present invention, the damper is multiple, the second through hole is multiple, and the multiple dampers and the multiple second through holes are in a one-to-one correspondence.

In some embodiments of the present invention, the driving member is a driving motor.

The air supply apparatus according to the present invention comprises a rotation driving mechanism for realizing the head-shaking of the air supply apparatus according claim <NUM>.

According to the air supply apparatus of the present invention, through the coordination of the first fixed seat, the second fixed seat, and the rotation driving mechanism, the size of the rotation driving mechanism can be reduced compared with the prior art. After the air supply apparatus is assembled, the air supply apparatus can be made more pleasing to the eye, thereby improving the market competitiveness of the air supply apparatus.

In some embodiments of the present invention, the pitch axis is parallel to the horizontal plane.

In some embodiments of the present invention, the driving assembly includes: a driving member and a first transmission member, wherein the first transmission member is connected to the driving member, and the rotary bracket is provided with a second transmission member drivingly engaging with the first transmission member.

In some embodiments of the present invention, the rotation driving mechanism further comprises: a support bearing, wherein the fixed bracket comprises a body portion, the body portion defines a mounting groove, an outer wall surface of a bottom wall of the mounting groove is provided with a mounting post, an inner ring of the support bearing is sleeved on the mounting post, and an outer ring of the support bearing is connected to the rotary bracket.

In some embodiments of the present invention, the rotary bracket defines a through-hole, the through-hole passing through the rotary bracket in a thickness direction of the rotary bracket, and the through-hole being sleeved on an outer side of the fixed bracket and the support bearing.

In some embodiments of the present invention, the inner wall surface of the through-hole is provided with an annular boss and the inner wall surface of the annular boss is provided with the second transmission member.

In some embodiments of the present invention, the inner wall surface of the through-hole is provided with a stopper boss, the stopper boss being located between the annular boss and the support bearing, and the stopper boss abutting the support bearing.

In some embodiments of the present invention, the rotation driving mechanism further comprises: a snap spring, wherein the snap spring is sleeved on the mounting post and located at one end of the support bearing away from the fixed bracket.

In some embodiments of the present invention, the rotation driving mechanism further comprises: a bearing inner ring stop, wherein the bearing inner ring stop is provided on the fixed bracket and is located at one end of the support bearing away from the fixed bracket.

In some embodiments of the present invention, the rotation driving mechanism further comprises: a bearing outer ring stop, the bearing outer ring stop being provided on the rotary bracket and located at one end of the support bearing away from the fixed bracket.

In some embodiments of the present invention, the rotation driving mechanism further comprises: an annular friction plate, the body portion being sleeved on the outer side of the friction plate, and the friction plate being sleeved on the outer side of the rotary bracket.

In some embodiments of the present invention, the side wall of the mounting groove has a first through hole, the first transmission member being located in the mounting groove, and the first transmission member drivingly coordinating with the second transmission member through the first through hole.

In some embodiments of the present invention, the rotation driving mechanism further comprises: a Hall assembly, wherein the Hall assembly comprises a Hall plate and a magnet, and either the Hall plate or the magnet is provided on the fixed bracket, and the other the Hall plate and the magnet is provided on the rotary bracket.

In some embodiments of the present invention, the depression angle of the rotary bracket is A, meeting the relational expression: -<NUM>°≤A≤<NUM>°; the elevation angle of the rotary bracket is B, meeting the relational expression: <NUM>°≤B≤<NUM>°.

In some embodiments of the present invention, the air supply apparatus further comprises: a damping mechanism, the damping mechanism being provided on the fixed bracket and being pivotably connected to the rotary bracket.

In some embodiments of the present invention, the rotary bracket has a damping mechanism connection structure, and the damping mechanism connection structure is sleeved on the damping mechanism.

In some embodiments of the present invention, the damping mechanism connection structure has a first routing channel and the damping mechanism has a second routing channel communicating with the first routing channel.

In view of this, the present invention proposes a household appliance, comprising: a rotation driving mechanism for realizing a head-shaking function according to appended claim <NUM>; a second fixed seat; a first fixed seat; and a corresponding rotational structure, the rotational structure comprising a fixed bracket and a rotary bracket, the fixed bracket being connected to the second fixed seat, and the rotary bracket being connected to the first fixed seat; wherein the rotary bracket rotates about the fixed bracket to link the first fixed seat to rotate about the second fixed seat.

The household appliance provided in the present invention, comprises a second fixed seat, a first fixed seat, and a rotational structure. The second fixed seat and the first fixed seat are connected via the rotational structure, and the rotational structure can drive the first fixed seat to rotate. The rotational structure comprises a fixed bracket and a rotary bracket, the fixed bracket is connected to the second fixed seat, and the rotary bracket is connected to the first fixed seat. The rotary bracket rotates about the fixed bracket, thereby driving the first fixed seat to rotate about the fixed bracket, i. the first fixed seat is driven to rotate about the second fixed seat, achieving the rotation of the first fixed seat and the components connected thereto in the household appliance.

According to the above-mentioned household appliance provided by the present invention, it can also have the following additional technical features.

In the above embodiment, further, the household appliance further comprises: a first damping frame connected to the first fixed seat, and a second damping frame connected to the fixed bracket, wherein the second damping frame is sleeved on the first damping frame, and the first damping frame rotates around the second damping frame.

In this embodiment, the household appliance further comprises a first damping frame and a second damping frame. The first damping frame is connected to the first fixed seat, and the second damping frame is connected to the fixed bracket. Therefore, the first fixed seat can be supported by the first damping frame and the second damping frame, and the reliability of the mounting of the first fixed seat is improved. The second damping frame is sleeved on the first damping frame, and the first damping frame can rotate around the second damping frame so that the first fixed seat can rotate around the second fixed seat under the driving of the rotary bracket.

In any of the above embodiments, further, damping fluid is provided between the first damping frame and the second damping frame.

In this embodiment, damping fluid is provided between the first damping frame and the second damping frame to provide a damping force as the first damping frame rotates around the second damping frame, ensuring the stability of the household appliance.

In any of the above embodiments, further, the rotation angle of the first fixed seat is greater than <NUM>° and less than or equal to <NUM>°.

In this embodiment, the rotation angle of the first fixed seat is greater than or equal to <NUM>° and less than or equal to <NUM>°. Specifically, the elevation angle of the rotation of the first fixed seat is greater than or equal to <NUM>° and less than or equal to <NUM>°, and the depression angle of the first fixed seat is greater than or equal to <NUM>° and less than or equal to <NUM>°, wherein the elevation angle of the first fixed seat is the angle of the rotation of the first fixed seat from a horizontal position to an upward side, and the depression angle of the first fixed seat is the angle of the rotation of the first fixed seat from a horizontal position to a downward side.

In any of the above embodiments, further, the household appliance further comprises: a Hall plate arranged on the second fixed seat, wherein the first fixed seat is further provided with a magnetic member, and the Hall plate is connected to the magnetic member.

In this embodiment, the Hall plate is provided on the second fixed seat, and a magnetic member is provided on the first fixed seat. The movement of the first fixed seat at any angle can be realized through the coordination between the Hall plate and the magnetic member, namely, the coordination between the Hall plate and the magnetic member can enable the first fixed seat to rotate at any specified angle around the second fixed seat. For example, the first fixed seat is required to rotate any specified angle around the second fixed seat by <NUM>° or <NUM>° or <NUM>°, etc. from an initial position.

Specifically, the Hall plate is an component with the Hall effect.

In any of the above embodiments, further, the second fixed seat is provided with a hollow portion, the hollow portion is provided corresponding to the first damping frame, the household appliance further comprises a connecting wire, and the connecting wire is connected to the second fixed seat by passing through the hollow portion from the first fixed seat.

In this embodiment, the second fixed seat is provided with a hollow portion, and the household appliance further comprises a connecting wire. The connecting wire can pass through the hollow portion, namely, the connecting wire can pass through the hollow portion to connect to the first fixed seat and other components thereon so that the wiring of the household appliance is more reliable.

According to the present invention, the rotational structure further comprises:
a driving member, wherein the driving member and the fixed bracket are connected; and a first transmission member, wherein the first transmission member is connected to the driving member and the rotary bracket, respectively, the driving member being adapted to drive the first transmission member to rotate to link the rotary bracket to rotate.

According to the present invention, the driving member drives the first transmission member to rotate so that the first transmission member drives the rotary bracket to rotate; it could be understood that the first transmission member rotates to link the rotary bracket to rotate, namely, the driving member drives the first transmission member to rotate; since the first transmission member is connected to the rotary bracket, the first transmission member can drive the rotary bracket to move, namely, the first transmission member rotation links the rotary bracket to rotate.

Specifically, the driving member comprises a motor, and the motor may be a synchronous motor or a stepping motor.

According to an embodiment of the present invention, the fixed bracket comprises: a body portion, wherein the body portion is connected with the driving member and the second fixed seat; and a mounting post connected to the body portion, wherein the rotary bracket is sleeved on the mounting post, and the rotary bracket rotates about the mounting post.

According to an embodiment of the present invention, the fixed bracket comprises a body portion and a mounting post, and the driving member is fixed on the body portion. Meanwhile, the rotational structure can also be fixed on other apparatuses via the body portion. The mounting post is provided on the body portion, and the rotary bracket is sleeved on the mounting post, so as to realize the rotation of the rotary bracket around the mounting post, and improve the reliability of the connection between the fixed bracket and the rotary bracket.

Specifically, the rotary bracket can rotate circumferentially around the fixed bracket. Sleeving the rotary bracket on the mounting post of the fixed bracket can reduce the size of the rotational structure.

In any of the above embodiments, further, the body portion has a mounting groove, and the first transmission member is provided on the mounting groove; a first through hole is provided on the wall surface of the mounting groove, the first through hole penetrates through the wall surface of the mounting groove, and the first transmission member is connected to the rotary bracket via the first through hole.

In this embodiment, the body portion has a mounting groove with the first transmission member provided within the mounting groove to avoid the exposure of the first transmission member to the outer side which affects the aesthetics of the rotational structure. The first transmission member is provided in the mounting groove, and in order to realize the connection between the first transmission member and the rotary bracket, a first through hole is provided in the wall surface of the mounting groove. This allows the first transmission member to be connected to the rotary bracket via the first through hole. It could be understood that the first through hole is a through hole penetrating through the wall surface of the mounting groove.

Specifically, the rotary bracket is sleeved on the outer side of the mounting groove.

In any of the above embodiments, further, the rotary bracket comprises: a connection portion, wherein the connection portion is sleeved on the mounting post, and one end of the connection portion away from the driving member is connected to the first fixed seat; and a second transmission member connected to the connection portion, wherein the first transmission member is connected to the second transmission member, and the first transmission member drives the second transmission member to rotate so as to link the connection portion to rotate.

According to an embodiment of the present invention, the rotary bracket comprises a connection portion and a second transmission member which are connected. The connection portion is sleeved on the mounting post, the second transmission member is connected to the first transmission member, the driving member drives the first transmission member to rotate, and the first transmission member drives the second transmission member to rotate so that the connection portion connected to the second transmission member rotates around the mounting post, i. the rotary bracket rotates around the fixed bracket.

According to the present invention, the household appliance further comprises: a damper connected to the body portion and provided on the mounting groove, the damper may include a third rotational member; wherein the second through hole is provided on the wall surface of the mounting groove, the second through hole penetrates through the wall surface of the mounting groove, and the third rotational member is connected to the second transmission member via the second through hole.

According to the present invention, the household appliance further includes a damper. The damper is mounted on the body portion and housed in the mounting groove. The damper may comprise a third rotational member, and the third rotational member is connected to the second transmission member. When the rotational structure works, the driving member drives the first transmission member to rotate, the first transmission member drives the second transmission member to rotate, and the second transmission member drives the third rotational member to rotate. When the third rotational member rotates, a damping effect can be generated. That is to say, the kinetic energy of the rotation of the second transmission member is consumed when the third rotational member rotates so that the kinetic energy of the rotation of the second transmission member is attenuated, thereby forming a damping effect. The damper ensures the stability of the rotational structure during working, and at the same time, when the rotary bracket is forcedly driven by an external force, the reliability of the rotational structure can be ensured by the damping effect of the damper.

In any of the above embodiments, Further, each of the first transmission member, the second transmission member, and the third rotational member comprises a gear structure, and the first transmission member and the second transmission member are drivingly engaged through a gear structure, and the second transmission member and the third rotational member are drivingly engaged through a gear structure.

In the embodiment, the first transmission member, the second transmission member, and the third rotational member all comprise a gear structure, and the first transmission member and the second transmission member are connected via the gear structure to realize a gear transmission and improve the reliability of the connection therebetween. The second transmission member and the third rotational member are connected via the gear structure to realize a gear transmission and improve the reliability of the connection therebetween.

According to an embodiment of the present invention, further, the driving member comprises a rotor and an output shaft connected to the rotor, and the output shaft is connected to the first transmission member. The rotation axis of the rotor, the axis of the mounting post, and the axis around which the rotary bracket rotates are arranged coaxially, or the rotation axis of the rotor and the axis of the mounting post do not coincide.

In the embodiment, the driving member comprises an output shaft and a rotor, and the rotor rotates to drive the output shaft to rotate so that the first connecting member is driven to rotate via the output shaft. The axis rotated by the rotor, the axis of the mounting post, and the axis around which the rotary bracket rotates are arranged coaxially so that the space occupied by the rotational structure is reduced. Alternatively, the axis around which the rotor rotates and the axis of the mounting post do not coincide, i. the rotary bracket moves eccentrically with respect to the driving member so that the rotational structure can be applied to different apparatuses depending on the actual situation.

In any of the above embodiments, further, the household appliance further comprises: a support bearing provided between the rotary bracket and the mounting post; a limiting member along the direction of the axis about which the rotary bracket rotates, the limiting member being located at one end of the rotary bracket away from the driving member; a friction plate, along the direction of the axis about which the rotary bracket rotates, the friction plate being arranged between the rotary bracket and the limiting member; and a limiting structure connected to the fixed bracket, the limiting structure being adapted to limit the rotation angle of the rotary bracket.

In the embodiment, the household appliance further comprises a support bearing. The support bearing is mounted inside the rotary bracket and nested on the mounting post for connecting the rotary bracket and the mounting post; the household appliance further comprises a limiting member, wherein the limiting member is arranged on the rotary bracket and is located at one end of the rotary bracket away from the driving member; at the same time, the limiting member is clamped on the fixed bracket, thereby defining the support bearing on the mounting post; the household appliance further comprises a friction plate mounted between the rotary bracket and the limiting member and being made of a wear-resistant and easy-to-wear material, which can achieve the control of the gap between the rotary bracket and the fixed bracket and stabilize the rotational structure; at the same time, the friction plate has a lubricating effect when the rotary bracket rotates. The fixed bracket is further provided with a limiting structure thereon, and the limiting structure can limit the rotary bracket so as to fix the rotated rotary bracket after rotation in a specified position.

In any of the above embodiments, further, the household appliance includes any one of the fan, air conditioner, and heater.

In this embodiment, the household appliance comprises any one of the fan, air conditioner, or heater. Specifically, when the household appliance is a fan, the mounting portion is a support structure, the rotational portion is a fan head, and the axis around which the rotary bracket rotates in the rotational structure is perpendicular to the length direction of the support structure so that the fan head can rotate up and down, namely, the adjustment of the pitch angle of the fan head is realized.

The additional aspects and advantages of the present invention will become apparent in the following description, or be understood through the practice of the present invention.

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:.

The corresponding relations between the reference numerals and the component names in <FIG> are:
<NUM> household appliance, <NUM> air supply apparatus, <NUM> first fixed seat, <NUM> second fixed seat, <NUM> rotation driving mechanism, <NUM> fixed bracket, <NUM> body portion, <NUM> mounting groove, <NUM> mounting post, <NUM> first through hole, <NUM> second through hole, <NUM> positioning groove, <NUM> first mounting portion, <NUM> first positioning portion, <NUM> reinforcing structure, <NUM> rotary bracket, <NUM> second transmission member, <NUM> through-hole, <NUM> annular boss, <NUM> damping mechanism connection structure, <NUM> first routing channel, <NUM> stopper boss, <NUM> fitting groove, <NUM> third through hole, <NUM> driving assembly, <NUM> driving member, <NUM> first transmission member, <NUM> second mounting portion, <NUM> second positioning portion, <NUM> support bearing, <NUM> bearing inner ring stop, <NUM> bearing outer ring stop, <NUM> snap spring, <NUM> friction plate, <NUM> damper, <NUM> Hall assembly, <NUM> Hall plate, <NUM> magnet, <NUM> damping mechanism, <NUM> second routing channel, <NUM> head, <NUM> first damping frame, and <NUM> second damping frame.

In order that the above objects, features, and advantages of the present invention may be more clearly understood, a more particular description of the present invention will be further described in detail with reference to the accompanying drawings and specific implementation modes. It should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be implemented otherwise than as specifically described herein. Accordingly, the scope of the present invention only defined by the appended claims and is thus not limited by the specific embodiments disclosed below.

A rotation driving mechanism <NUM>, an air supply apparatus <NUM>, and a household appliance <NUM> for an air supply apparatus according to some embodiments of the present invention are described below with reference to <FIG>.

As shown in <FIG>, according to the rotation driving mechanism <NUM> of the first specific embodiment of the present invention, the rotation driving mechanism <NUM> is connected to a rotary component of the air supply apparatus, and the rotation driving mechanism <NUM> is used for driving the rotary component to rotate. The rotation driving mechanism <NUM> includes: a fixed bracket <NUM>, a rotary bracket <NUM>, and a driving member <NUM>. The driving member <NUM> may be set to be a driving motor, and the driving motor may be a synchronous motor or a stepping motor. The fixed bracket <NUM> is fixedly arranged on a support structure of the air supply apparatus, the rotary bracket <NUM> being sleeved on the fixed bracket <NUM>. It can also be understood that the rotary bracket <NUM> is sleeved on the outer side of the fixed bracket <NUM>, and the rotary bracket <NUM> is rotatable with respect to the fixed bracket <NUM>; the rotary bracket <NUM> is connected to the rotary component of the air supply apparatus; the rotary bracket <NUM> can rotate with the rotary component; the driving member <NUM> is arranged on the fixed bracket <NUM>; the driving member <NUM> is used for driving the rotary bracket <NUM> to rotate with respect to the fixed bracket <NUM>.

Specifically, when the rotation driving mechanism <NUM> drives the rotary component of the air supply apparatus to rotate, the driving member <NUM> drives the rotary bracket <NUM> to make a predetermined trajectory rotation with respect to the fixed bracket <NUM>, and the rotary bracket <NUM> can move together with the rotary component of the air supply apparatus during the rotation, thereby achieving the working purpose of the rotation of the rotary component of the air supply apparatus. The size of the rotation driving mechanism <NUM> of the present invention is smaller than a crank and rocker mechanism of the prior art, and such an arrangement can reduce the size of the rotation driving mechanism <NUM>. After the rotation driving mechanism <NUM> is mounted on the air supply apparatus, the air supply apparatus can be made to look more compact, so that the air supply apparatus can be made more pleasing to the eye. The rotation angle range of the rotary bracket <NUM> with respect to the fixed bracket <NUM> is <NUM>° to <NUM>°, namely, the rotary bracket <NUM> moves with respect to the fixed bracket <NUM> over the entire circumference. The rotation of rotary bracket <NUM> has no limiting position so that the rotation angle of the rotary bracket <NUM> with respect to the fixed bracket <NUM> can be made unlimited, and the shaking angle of the rotary component of the air supply apparatus can be enlarged such that the air supply range of the air supply apparatus can be enlarged.

Therefore, with the coordination of the fixed bracket <NUM>, the rotary bracket <NUM>, and the driving member <NUM>, the size of the rotation driving mechanism <NUM> can be reduced as compared with the prior art. The air supply apparatus can be made more pleasing to the eye after the rotation driving mechanism <NUM> is mounted on the air supply apparatus, and the rotation angle of the rotary bracket <NUM> with respect to the fixed bracket <NUM> is not limited, and the shaking angle of the rotary component of the air supply apparatus can be enlarged.

According to the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> further includes:
a first transmission member <NUM>, wherein the rotary bracket <NUM> is provided with a second transmission member <NUM> drivingly coordinating with the first transmission member <NUM>, the first transmission member <NUM> being connected to the driving shaft of the driving member <NUM>. When the driving member <NUM> is working, the driving member <NUM> drives the driving shaft to rotate, and the driving shaft carries the first transmission member <NUM> to rotate. Meanwhile, the first transmission member <NUM> transmits power to the second transmission member <NUM>, and then the second transmission member <NUM> drives the rotary bracket <NUM> to rotate so as to achieve the working effect of driving the rotary bracket <NUM> to rotate with respect to the fixed bracket <NUM>.

In some embodiments of the present invention, as shown in <FIG>, the first transmission member <NUM> may be provided as a gear, and the second transmission member <NUM> may be provided as a rack. After the rotation driving mechanism <NUM> is mounted, the gear is engaged with the rack, and the power of the driving member <NUM> can be transmitted to the rotary bracket <NUM> via the transmission between the gear and the rack so that the rotary bracket <NUM> rotates. Furthermore, through the coordinated transmission of the gear and the rack, the power can be smoothly transmitted to the rotary bracket <NUM> so as to smoothly rotate the rotary bracket <NUM>, thereby making the arrangement of the first transmission member <NUM> and the second transmission member <NUM> more reasonable and making the rotary component of air supply apparatus rotates more smoothly.

According to the present invention, as shown in <FIG> and <FIG>, the fixed bracket <NUM> includes: a body portion <NUM>, wherein the body portion <NUM> defines a mounting groove <NUM>, the side wall of the mounting groove <NUM> has a first through hole <NUM>, the first through hole <NUM> communicates with the mounting groove <NUM>, the first transmission member <NUM> is located in the mounting groove <NUM>, and the first transmission member <NUM> drivingly coordinates with the second transmission member <NUM> via the first through hole <NUM>. A part of the structure of the first transmission member <NUM> is located in the mounting groove <NUM>, and another part of the structure of the first transmission member <NUM> is engaged with the second transmission member <NUM> after extending out of the first through hole <NUM> so that the first transmission member <NUM> and the second transmission member <NUM> drivingly mate. At that, the power transmission from the driving member <NUM> to the rotary bracket <NUM> can be ensured, and the size of the rotation driving mechanism <NUM> can be further reduced compared with the prior art.

In some embodiments of the present invention, as shown in <FIG> and <FIG>, the second transmission member <NUM> may be arranged at the inner wall surface of the rotary bracket <NUM> opposite to the fixed bracket <NUM>. Such arrangement facilitates the driving coordinating between the second transmission member <NUM> and the first transmission member <NUM> so that the size of the rotation driving mechanism <NUM> can be better reduced. Therefore, the arrangement position of the second transmission member <NUM> may be more reasonable.

According to the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> further comprises: a damper <NUM>, the side wall of the mounting groove <NUM> has a second through hole <NUM>, the damper <NUM> is provided on the fixed bracket <NUM> and located in the mounting groove <NUM>, and the damper <NUM> drivingly coordinates with the second transmission member <NUM> via the second through hole <NUM>. A part of the structure of the damper <NUM> is located in the mounting groove <NUM>, and another part of the structure of the damper <NUM> extends out of the second through hole <NUM> and then engages with the second transmission member <NUM>; the damper <NUM> has a buffering function; during the rotation of the rotary bracket <NUM>, the rotary bracket <NUM> can be kept rotating stably by the damper <NUM> coordinating with the second transmission member <NUM>; when the rotary bracket <NUM> is forced to rotate driven by an external force, the rotation driving mechanism <NUM> can be prevented from being damaged. It needs to be noted that dampers <NUM> with different specification structures can be used according to actual conditions.

Further, multiple dampers <NUM> and multiple second through holes <NUM> may be provided, and multiple dampers <NUM> and multiple second through holes <NUM> are provided in a one-to-one correspondence so that stable rotation of the rotary bracket <NUM> can be better kept, and the damage to the rotation driving mechanism <NUM> can be better prevented when the rotary bracket <NUM> is forced to rotate by being driven by an external force.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> may further comprise: a support bearing <NUM>, wherein the support bearing <NUM> is supported between the fixed bracket <NUM> and the rotary bracket <NUM>, so that the fixed bracket <NUM> and the rotary bracket <NUM> can be better assembled together, and when the rotary bracket <NUM> rotates, it can ensure that the rotary bracket <NUM> rotates smoothly with respect to the fixed bracket <NUM>; the support bearing <NUM> has a supporting effect on the rotary bracket <NUM>, and can avoid the rotary bracket <NUM> from shaking.

In some embodiments of the present invention, as shown in <FIG>, the outer wall surface of the bottom wall of the mounting groove <NUM> can be provided with a mounting post <NUM>, the inner ring of the support bearing <NUM> can be sleeved on the outer surface of the mounting post <NUM>, the inner ring of the support bearing <NUM> is connected to the mounting post <NUM>, and the outer ring of the support bearing <NUM> is connected to the rotary bracket <NUM>. Such arrangement can ensure that the rotary bracket <NUM> and the fixed bracket <NUM> can rotate with respect to each other, and can ensure the working performance of the rotation driving mechanism <NUM>.

In some embodiments of the present invention, as shown in <FIG>, the inner wall surface of the bottom wall of the mounting groove <NUM> may be provided with a reinforcing structure <NUM>. The reinforcing structure <NUM> is integrally formed with the mounting post <NUM> such that the structural strength of the fixed bracket <NUM> may be improved and the deformation of the fixed bracket <NUM> may be avoided.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> may further include: a friction plate <NUM>, wherein the rotary bracket <NUM> can define a fitting groove <NUM>, the support bearing <NUM> is located in the fitting groove <NUM>, and the bottom wall of the fitting groove <NUM> can be provided with a third through hole <NUM>; the free end of the mounting post <NUM> extends out of the third through hole <NUM>, the friction plate <NUM> can be sleeved on the outer surface of the mounting post <NUM>, and the friction plate <NUM> abuts against the outer end of the third through hole <NUM>; the friction plate <NUM> has wear-resistant and easy-to-wear properties; by providing the friction plate <NUM>, the gap between the rotary bracket <NUM> and the fixed bracket <NUM> can be controlled, so that the structure of the rotation driving mechanism <NUM> can be made more stable, and the friction plate <NUM> can provide a lubricating effect when the rotary bracket <NUM> rotates. Therefore, the rotation of the rotary bracket <NUM> can be facilitated, and further, the rotational noise of the rotary bracket <NUM> can be reduced.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> may further include: a snap spring <NUM>, wherein the circumferential wall surface of the mounting post <NUM> can be provided with a positioning groove <NUM>, the positioning groove <NUM> is arranged along the circumferential direction of the mounting post <NUM>, and the snap spring <NUM> is provided in the positioning groove <NUM>; the snap spring <NUM> abuts against the end surface of the friction plate <NUM> away from the third through hole <NUM>, as shown in <FIG>, and the snap spring <NUM> abuts against the upper end surface of the friction plate <NUM>; since the support bearing <NUM> is tightly mated with the rotary bracket <NUM>, the support bearing <NUM> and the rotary bracket <NUM> can be reliably locked on the mounting post <NUM> of the fixed bracket <NUM> by providing the snap spring <NUM>, thereby making the structural mounting of the rotation driving mechanism <NUM> more stable.

In some embodiments of the present invention, as shown in <FIG>, the edge of the open end of the mounting groove <NUM> may be provided with a first mounting portion <NUM>, and the driving member <NUM> may be provided with a second mounting portion <NUM> connected to the first mounting portion <NUM>, wherein the driving member <NUM> can be fixed on the fixed bracket <NUM> by coordinating the first mounting portion <NUM> and the second mounting portion <NUM> for connection so that the driving member <NUM> can be prevented from falling off the fixed bracket <NUM>.

In some embodiments of the present invention, as shown in <FIG>, the first mounting portion <NUM> may be provided with a first positioning portion <NUM>, and the second mounting portion <NUM> may be provided with a second positioning portion <NUM> connected to the first positioning portion <NUM>. The first positioning portion <NUM> can be provided as a positioning post, and the second positioning portion <NUM> can be provided as a positioning hole; when mounting the driving member <NUM> and the fixed bracket <NUM>, the positioning post is firstly inserted into the positioning hole so that the relative positions of the driving member <NUM> and the fixed bracket <NUM> can be positioned; then, the driving member <NUM> and the fixed bracket <NUM> are assembled together by using a bolt so that the assembly of the driving member <NUM> and the fixed bracket <NUM> is facilitated, and the assembly efficiency of the rotation driving mechanism <NUM> can be improved.

In some embodiments of the present invention, the rotation driving mechanism <NUM> may further comprise: a hall assembly (not shown in the figure), wherein the Hall assembly may comprise a Hall plate and a magnet, either the Hall plate or magnet is provided on the fixed bracket <NUM>, and the other of the Hall plate and magnet is provided on the rotary bracket <NUM>. When the rotary bracket <NUM> needs to rotate by a specified angle with respect to the fixed bracket <NUM>, the Hall plate and the magnet can work coordinatingly to achieve the purpose of controlling the rotary bracket <NUM> to rotate by a specified angle so that the rotation driving mechanism <NUM> can meet different working requirements of a user.

In some embodiments of the present invention, the fixed bracket <NUM> may be provided with a first limiting structure (not shown in the figure), and the rotary bracket <NUM> may be provided with a second limiting structure (not shown in the figure) coordinating with the first limiting structure in limiting. When the rotary bracket <NUM> needs to rotate the specified angle with respect to the fixed bracket <NUM>, the first limiting structure and the second limiting structure coordinate to work so that the working purpose of controlling the rotary bracket <NUM> to rotate the specified angle can be achieved. Therefore, the rotation driving mechanism <NUM> can be made to meet the different working requirements of a user.

In some embodiments of the present invention, as shown in <FIG>, the central axis of the driving member <NUM>, the central axis of the fixed bracket <NUM>, and the central axis of the rotary bracket <NUM> are arranged to coincide. Such arrangement can further reduce the size of the rotation driving mechanism <NUM> in a direction perpendicular to the central axis, and can make the structure of the rotation driving mechanism <NUM> more compact.

As shown in <FIG> and <FIG>, a rotation driving mechanism <NUM> according to a second specific embodiment of the present invention is shown. In this embodiment, differing from the first specific embodiment, the central axis of the fixed bracket <NUM> and the central axis of the rotary bracket <NUM> coincide, and the central axis of the driving member <NUM> and the central axis of the fixed bracket <NUM> do not coincide. By adjusting the position of driving member <NUM> with respect to fixed bracket <NUM>, the eccentric movement of the rotary bracket <NUM> and the driving member <NUM> is realized, which has a wider usage scenario.

According to the air supply apparatus of the embodiments of the present invention, including the rotation driving mechanism <NUM> of the above-mentioned embodiments, the rotation driving mechanism <NUM> is arranged on the air supply apparatus so that the rotation driving mechanism <NUM> can reduce the size of the rotation driving mechanism <NUM>; after the rotation driving mechanism <NUM> is mounted on the air supply apparatus, the air supply apparatus can be more pleasing to the eye, and the rotary bracket <NUM> has no limitation with respect to the rotation angle of the fixed bracket <NUM>, and the shaking angle of the rotary component of the air supply apparatus can be enlarged.

The following describes the air supply apparatus <NUM> according to an embodiment of the present invention with reference to <FIG>. The air supply apparatus <NUM> may be an appliance having a pitch function, such as a fan, a heater NPS-Q, etc..

As shown in <FIG>, according to an air supply apparatus <NUM> of an embodiment of the present invention, a fan is taken as an example for illustrating the air supply apparatus <NUM>. The air supply apparatus <NUM> comprises: a first fixed seat <NUM>, a second fixed seat <NUM>, and a rotation driving mechanism <NUM>. The second fixed seat <NUM> is connected to the head <NUM> of the air supply apparatus <NUM>, namely, the second fixed seat <NUM> is connected to the head <NUM> of the fan. The first fixed seat <NUM> is used for supporting the rotation driving mechanism <NUM>; the rotation driving mechanism <NUM> has a fixed bracket <NUM> and a rotary bracket <NUM>, wherein the fixed bracket <NUM> is fixedly connected to the first fixed seat <NUM>, the rotary bracket <NUM> is fixedly connected to the second fixed seat <NUM>, the rotary bracket <NUM> is sleeved over the outer side of the fixed bracket <NUM>, and the rotation driving mechanism <NUM> further has a driving assembly <NUM>, the driving assembly <NUM> being adapted to drive the rotary bracket <NUM> to rotate around the pitch axis.

It needs to be noted that the pitch axis can be arranged in parallel with the horizontal plane. When the driving assembly <NUM> drives the rotary bracket <NUM> to rotate around the pitch axis, the second fixed seat <NUM> will rotate around the pitch axis together with the rotary bracket <NUM> so that the head <NUM> of the air supply apparatus <NUM> can rotate in an up-and-down direction. At that, the pitching action of the head <NUM> of the fan can be achieved.

Specifically, when it is required that the head <NUM> of the air supply apparatus <NUM> rotates in the up-and-down direction, the driving assembly <NUM> drives the rotary bracket <NUM> to rotate around the pitch axis. When the rotary bracket <NUM> rotates, the second fixed seat <NUM> rotates around the pitch axis. When the second fixed seat <NUM> rotates around the pitch axis, the head <NUM> rotates together in the up-and-down direction, so as to achieve the working purpose of the pitching action of the head <NUM> of the air supply apparatus <NUM>. By sleeving the rotary bracket <NUM> on the outer side of the fixed bracket <NUM>, the size of the rotation driving mechanism <NUM> can be reduced compared with the four-linkage mechanism in the prior art. After the air supply apparatus <NUM> is assembled, the size of the air supply apparatus <NUM> can be reduced so that the air supply apparatus <NUM> can be made more pleasing to the eye and more delicate, thereby improving the market competitiveness of the air supply apparatus <NUM>.

Therefore, through the coordination of the first fixed seat <NUM>, the second fixed seat <NUM>, and the rotation driving mechanism <NUM>, the size of rotation driving mechanism <NUM> can be reduced compared with the prior art. After the air supply apparatus <NUM> is assembled, the air supply apparatus <NUM> can be made more pleasing to the eye, thereby improving the market competitiveness of the air supply apparatus <NUM>.

According to the present invention, as shown in <FIG>, the driving assembly <NUM> includes: a driving member <NUM> and a first transmission member <NUM>, the first transmission member <NUM> being connected to the driving member <NUM>. It needs to be noted that the driving member <NUM> can be provided as a driving motor, the first transmission member <NUM> is connected to the output shaft of the driving motor, and the rotary bracket <NUM> is provided with a second transmission member <NUM> engaging with the first transmission member <NUM> for transmission. The driving motor can provide power for the rotation of the rotary bracket <NUM>; when the driving member <NUM> works, the driving member <NUM> drives the output shaft to rotate, and the output shaft rotates with the first transmission member <NUM>; at the same time, the first transmission member <NUM> transmits power to the second transmission member <NUM>; and then the second transmission member <NUM> drives the rotary bracket <NUM> to rotate around the pitch axis, so as to achieve the working effect of driving the second fixed seat <NUM> to rotate with respect to the first fixed seat <NUM>.

In some embodiments of the present invention, as shown in <FIG>, the first transmission member <NUM> may be provided as a gear, and the second transmission member <NUM> may be provided as a rack. After the rotation driving mechanism <NUM> is mounted, the gear and the rack are engaged together. The power of the driving member <NUM> can be transmitted to the rotary bracket <NUM> through gear and rack transmission so that the rotary bracket <NUM> rotates. Furthermore, through the coordinated transmission of the gear and the rack, the power can be smoothly transmitted to the rotary bracket <NUM> so that the rotary bracket <NUM> smoothly rotates around the pitch axis, and therefore, the arrangement of the first transmission member <NUM> and the second transmission member <NUM> can be more reasonable, and the head <NUM> of the air supply apparatus <NUM> can also rotate more smoothly.

In some embodiments of the present invention, as shown in <FIG> and <FIG>, the rotation driving mechanism <NUM> may further include: a support bearing <NUM>, wherein the fixed bracket <NUM> comprises a body portion <NUM>, the body portion <NUM> defines a mounting groove <NUM>, and the outer wall surface of the bottom wall of the mounting groove <NUM> may be provided with a mounting post <NUM>; the inner ring of the support bearing <NUM> is sleeved on the outer side of the mounting post <NUM>, and the outer ring of the support bearing <NUM> is connected to the rotary bracket <NUM> so that the fixed bracket <NUM> and the rotary bracket <NUM> can be better assembled together. When the rotary bracket <NUM> rotates, it is ensured that the rotary bracket <NUM> rotates smoothly with respect to the fixed bracket <NUM>, and the support bearing <NUM> plays a supporting function on the rotary bracket <NUM> to prevent the rotary bracket <NUM> from shaking. It can also ensure that the rotary bracket <NUM> can rotate with respect to the fixed bracket <NUM>, and can ensure the working performance of the rotation driving mechanism <NUM>.

In some embodiments of the present invention, as shown in <FIG>, the rotary bracket <NUM> may define a through-hole <NUM>, the through-hole <NUM> penetrates through the rotary bracket <NUM> in the thickness direction of the rotary bracket <NUM>, and the through-hole <NUM> is sleeved on the outer side of the fixed bracket <NUM> and the support bearing <NUM>, so that the working purpose of the rotary bracket <NUM> sleeved on the fixed bracket <NUM> can be achieved. The air supply apparatus <NUM> can be assembled smoothly, and the connection of the rotary bracket <NUM> to the outer ring of the support bearing <NUM> can also be facilitated.

In some embodiments of the present invention, as shown in <FIG>, the inner wall surface of the through-hole <NUM> may be provided with an annular boss <NUM>, and the inner wall surface of the annular boss <NUM> may be provided with a second transmission member <NUM>, i. , the inner wall surface of the annular boss <NUM> may be provided with a rack, and the rack may be arranged to extend along the thickness direction of the rotary bracket <NUM>. Such arrangement ensures that the second transmission member <NUM> may engage with the first transmission member <NUM> and that the driving member <NUM> may drive the rotary bracket <NUM> to rotate.

In some embodiments of the present invention, as shown in <FIG>, <FIG>, and <FIG>, the inner wall surface of the through-hole <NUM> is provided with a stopper boss <NUM>, the stopper boss <NUM> is located between the annular boss <NUM> and the support bearing <NUM>, and the stopper boss <NUM> abuts the support bearing <NUM>. After the rotation driving mechanism <NUM> is assembled, the stopper boss <NUM> abuts the support bearing <NUM>, and the support bearing <NUM> can limit the stopper boss <NUM> and prevent the rotary bracket <NUM> from separating from the fixed bracket <NUM>. Therefore, the assembly reliability of the rotation driving mechanism <NUM> can be ensured, and therefore, the working reliability of the rotation driving mechanism <NUM> can be ensured.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> may further include: a snap spring <NUM>, wherein the snap spring <NUM> is sleeved on the outer side of the mounting post <NUM>, and the snap spring <NUM> is located at the end of the support bearing <NUM> away from the fixed bracket <NUM>. The circumferential wall surface of the mounting post <NUM> may be provided with a positioning groove, the positioning groove is arranged along the circumferential direction of the mounting post <NUM>, the snap spring <NUM> is provided in the positioning groove, and the snap spring <NUM> abuts one end of the support bearing <NUM> away from the fixed bracket <NUM>. By providing the snap spring <NUM>, the support bearing <NUM> and the rotary bracket <NUM> can be reliably mounted on the rotary bracket <NUM>, and the structural mounting of the rotation driving mechanism <NUM> can be made more reliable.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> may further include: a bearing inner ring stop <NUM>, wherein the bearing inner ring stop <NUM> may be provided on the fixed bracket <NUM>, and the bearing inner ring stop <NUM> is located at one end of the support bearing <NUM> away from the fixed bracket <NUM>. The bearing inner ring stop <NUM> can be connected to the fixed bracket <NUM> via a bolt. After the mounting of the rotation driving mechanism <NUM> is completed, the bearing inner ring stop <NUM> abuts one end of the support bearing <NUM> away from the fixed bracket <NUM> so that the support bearing <NUM> can be reliably mounted on the fixed bracket <NUM>, and the support bearing <NUM> can be prevented from falling off the mounting post <NUM>.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> may further include: a bearing outer ring stop <NUM>, wherein bearing outer ring stop <NUM> may be provided on the rotary bracket <NUM> and the bearing outer ring stop <NUM> is located at one end of the support bearing <NUM> away from the fixed bracket <NUM>. The bearing outer ring stop <NUM> can be connected to the rotary bracket <NUM> via a bolt. After the rotation driving mechanism <NUM> is mounted, the bearing outer ring stop <NUM> abuts one end of the support bearing <NUM> away from the fixed bracket <NUM>, which can further prevent the support bearing <NUM> from falling off the mounting post <NUM> so that the support bearing <NUM> can be reliably mounted on the fixed bracket <NUM>. Further, the support bearing <NUM> can be reliably supported between the fixed bracket <NUM> and the rotary bracket <NUM>.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> may further comprise: an annular friction plate <NUM>, the friction plate <NUM> being made of wear-resistant and easy-to-wear materials. The body portion <NUM> is sleeved on the outer side of the friction plate <NUM>, and the friction plate <NUM> is sleeved on the outer side of the rotary bracket <NUM>. By providing the friction plate <NUM>, it is possible to control the gap between the fixed bracket <NUM> and the rotary bracket <NUM>, it is possible to make the structure of the rotation driving mechanism <NUM> more stable, and it is also possible to ensure that the rotary bracket <NUM> is rotatable with respect to the fixed bracket <NUM>. The friction plate <NUM> can provide a lubricating effect when the rotary bracket <NUM> rotates, thereby facilitating the rotation of the rotary bracket <NUM> and reducing the rotational noise of the rotary bracket <NUM>.

It needs to be noted that the rotation driving mechanism <NUM> of the first embodiment of the present invention differs from the rotation driving mechanism <NUM> of the second embodiment of the present invention in that the friction plate <NUM> is not provided in the rotation driving mechanism <NUM> of the second embodiment. The rotation driving mechanism <NUM> of the first embodiment limits the support bearing <NUM> via the snap spring <NUM>, and the rotation driving mechanism <NUM> of the second embodiment limits the support bearing <NUM> via the bearing outer ring stop <NUM> and the bearing inner ring stop <NUM>.

According to the present invention, as shown in <FIG>, the side wall of the mounting groove <NUM> has a first through hole <NUM>, the first through hole <NUM> being in communication with the mounting groove <NUM>. Both the driving member <NUM> and the first transmission member <NUM> may be located in the mounting groove <NUM>, and part of the structure of the first transmission member <NUM> passes through the first through hole <NUM> and then drivingly coordinates with the second transmission member <NUM>. A part of the structure of the first transmission member <NUM> is located in the mounting groove <NUM>, and another part of the structure of the first transmission member <NUM> is engaged with the second transmission member <NUM> after extending out of the first through hole <NUM> so that the first transmission member <NUM> and the second transmission member <NUM> drivingly engage to coordinate. At that, the power transmission from the driving member <NUM> to the rotary bracket <NUM> can be ensured, and the size of the rotation driving mechanism <NUM> can be further reduced compared with the prior art. In addition, the gear and the rack have high transmission accuracy and can precisely control the pitch angle of a head <NUM> of a fan.

According to the present invention, as shown in <FIG> and <FIG>, the rotation driving mechanism <NUM> further includes: a damper <NUM>, wherein the side wall of the mounting groove <NUM> has a second through hole <NUM>, and the damper <NUM> is arranged in the mounting groove <NUM>, and a part of the structure of the damper <NUM> passes through the second through hole <NUM> and then drivingly coordinates with the second transmission member <NUM>. A part of the structure of the damper <NUM> is located in the mounting groove <NUM>, and another part of the structure of the damper <NUM> extends out of the second through hole <NUM> and then engages with the second transmission member <NUM>; the damper <NUM> has a buffering function; during the rotation of the rotary bracket <NUM>, the rotary bracket <NUM> can be kept rotating stably by the damper <NUM> drivingly engaging with the second transmission member <NUM>; when the rotary bracket <NUM> is forced to rotate driven by an external force, the rotation driving mechanism <NUM> can be prevented from being damaged. It needs to be noted that dampers <NUM> with different specification structures can be used according to actual conditions.

In some embodiments of the present invention, as shown in <FIG>, the rotation driving mechanism <NUM> further includes: a Hall assembly <NUM>, wherein the Hall assembly <NUM> may comprise a Hall plate <NUM> and a magnet <NUM>, either the Hall plate <NUM> or the magnet <NUM> being provided at the fixed bracket <NUM>, and the other of the Hall plate <NUM> and the magnet <NUM> being provided on the rotary bracket <NUM>. When the rotary bracket <NUM> needs to rotate by a specified angle with respect to the fixed bracket <NUM>, through the coordination of the Hall plate <NUM> and the magnet <NUM>, the working purpose of controlling the rotary bracket <NUM> to rotate around the pitch axis by a specified angle can be achieved, so that the pitch angle of the rotation of the head <NUM> of the fan can be controlled, and then the air supply apparatus <NUM> can meet the requirements of different air supply angles of a user.

In some embodiments of the present invention, the depression angle of the rotary bracket <NUM> may be set to A, meeting the relational expression: -<NUM>°≤A≤<NUM>°, and the elevation angle of rotary bracket <NUM> may be set as B, meeting the relational expression: <NUM>°≤B≤<NUM>°. Such setting can enable head <NUM> of a fan to have a pitch angle of <NUM>° in the up and down direction, and can enable head <NUM> to have sufficient air supply area in the up and down direction so that the air supply apparatus <NUM> can meet the air supply requirement of a user.

In some embodiments of the present invention, as shown in <FIG> and <FIG>, the air supply apparatus <NUM> may further include: a damping mechanism <NUM>, wherein the damping mechanism <NUM> may be arranged on the fixed bracket <NUM>, and the damping mechanism <NUM> is pivotably connected to the rotary bracket <NUM>, i. the damping mechanism <NUM> is connected to the rotary bracket <NUM>, and the rotary bracket <NUM> is pivotable with respect to the damping mechanism <NUM>. The damping mechanism <NUM> is made of a wear-resistant material, and damping oil is added in a groove of the damping mechanism <NUM>; after the assembly of the air supply apparatus <NUM> is completed, when the rotary bracket <NUM> rotates around a pivot axis, the damping mechanism <NUM> can play a damping effect, and can better keep the stable rotation of the rotary bracket <NUM>; when the rotary bracket <NUM> is forced to rotate under the driving of an external force, the rotation driving mechanism <NUM> can be better prevented from being damaged, and at the same time, the damping mechanism <NUM> can play a supporting role on the rotary bracket <NUM>, and can prevent the rotary bracket <NUM> from shaking. It needs to be noted that the damping mechanism <NUM> can use a damper with different specification structures according to actual conditions.

In some embodiments of the present invention, as shown in <FIG>, the rotary bracket <NUM> may have a damping mechanism connection structure <NUM>. The damping mechanism connection structure <NUM> is sleeved on the damping mechanism <NUM> such that the overall structure of the second fixed seat <NUM> and rotation driving mechanism <NUM> is more compact.

In some embodiments of the present invention, as shown in <FIG>, the damping mechanism connection structure <NUM> may have a first routing channel <NUM>, and the damping mechanism <NUM> may have a second routing channel <NUM> in communication with the first routing channel <NUM>. A wiring harness connecting the driving motor may pass through the first routing channel <NUM> and the second routing channel <NUM> and then connect with the driving motor so that the wiring of the air supply apparatus <NUM> may be more convenient. Further, the structural arrangement of the damping mechanism connection structure <NUM> and the damping mechanism <NUM> may be reasonable.

A household appliance <NUM> proposed according to some embodiments of the present invention will be described below with reference to <FIG>.

As shown in <FIG> and <FIG>, according to one embodiment of the present invention, the present invention proposes a household appliance <NUM>, including: a first fixed seat <NUM>, a second fixed seat <NUM>, and a rotation driving mechanism <NUM>.

The rotation driving mechanism <NUM> comprises a fixed bracket <NUM> and a rotary bracket <NUM>. The fixed bracket <NUM> is connected to the second fixed seat <NUM>, and the rotary bracket <NUM> is connected to the first fixed seat <NUM>; among other things, the rotary bracket <NUM> is adapted to rotate around the fixed bracket <NUM> to link the first fixed seat <NUM> to rotate around the second fixed seat <NUM>.

The household appliance <NUM> provided by the present invention comprises a second fixed seat <NUM>, a first fixed seat <NUM>, and a rotation driving mechanism <NUM>. The second fixed seat <NUM> and the first fixed seat <NUM> are connected via the rotation driving mechanism <NUM>, and the rotation driving mechanism <NUM> can drive the first fixed seat <NUM> to rotate so as to realize the automatic adjustment of the pitch angle of the first fixed seat <NUM>. The rotation driving mechanism <NUM> comprises a fixed bracket <NUM> and a rotary bracket <NUM>. The fixed bracket <NUM> is connected to the second fixed seat <NUM>, the rotary bracket <NUM> is connected to the first fixed seat <NUM>, and the rotary bracket <NUM> is adapted to rotate around the fixed bracket <NUM>. Therefore, the first fixed seat <NUM> can be driven to rotate around the fixed bracket <NUM>, that is, the first fixed seat <NUM> can be driven to rotate around the second fixed seat <NUM>, so as to realize the rotation of the first fixed seat <NUM> and the components connected thereto in the household appliance <NUM>.

Specifically, a rotation driving mechanism <NUM> is provided between the second fixed seat <NUM> and the first fixed seat <NUM>, and the first fixed seat <NUM> is driven to rotate by the rotation driving mechanism <NUM>, so as to achieve the automatic adjustment of the pitch angle of the first fixed seat <NUM> and the components thereon. Specifically, the second fixed seat <NUM> and the first fixed seat <NUM> are connected by means of the rotation driving mechanism <NUM>. In the rotary rotation driving mechanism <NUM>, the rotary bracket <NUM> can rotate around the circumference of the fixed bracket <NUM>, and the structure is simple and reliable, thereby making the household appliance <NUM> more reliable.

Specifically, the axis around which the rotary bracket <NUM> rotates around the fixed bracket <NUM> is perpendicular to the length direction of the second fixed seat <NUM>. For example, when the first fixed seat <NUM> is fixed on a plane or aground, the axis around which the rotary bracket <NUM> rotates is set in the horizontal direction, Therefore, the first fixed seat <NUM> can be enabled to rotate to the upward side of the household appliance <NUM>, or to the downward side of the household appliance <NUM>, that is, the adjustment of the pitch angle of the first fixed seat <NUM> is realized.

Specifically, the first fixed seat <NUM> has at least one supporting point.

Specifically, as shown in <FIG> and <FIG>, the portion of the rotary bracket <NUM> connected to the first fixed seat <NUM> supports the first fixed seat <NUM> such that the first fixed seat <NUM> rotates with the rotation of the rotary bracket <NUM> by taking the supporting point as the center, that is, the first fixed seat <NUM> can be connected to the second fixed seat <NUM> through a single arm. Furthermore, the first fixed seat <NUM> further comprises a support portion, wherein the support portion is rotatably connected to the second fixed seat <NUM>, and the support portion coincides with the axis about which the second fixed seat <NUM> rotates and the axis about which the rotary bracket <NUM> rotates around the fixed bracket <NUM>; that is to say, the first fixed seat <NUM> can also be connected to the second fixed seat <NUM> via a two-arm form.

Specifically, as shown in <FIG>, the second fixed seat <NUM> and the first fixed seat <NUM> are connected to the rotary bracket <NUM> via the fixed bracket <NUM>, and the rotary bracket <NUM> rotates around the fixed bracket <NUM> so that the first fixed seat <NUM> rotates around the second fixed seat <NUM>, thereby achieving the automatic adjustment of the pitch angle of the first fixed seat <NUM>. Shown in <FIG> are a left side view and a top view of the household appliance <NUM>. <FIG> is a top view of the household appliance <NUM>. It can be seen from <FIG> that the structure is simple and the occupied size is smaller.

As shown in <FIG>, according to one embodiment of the present invention, the features defined by the embodiments described above are included, and further: the household appliance <NUM> further includes: a first damping frame <NUM> connected to the first fixed seat <NUM>, and a second damping frame <NUM> connected to the fixed bracket <NUM>, wherein the second damping frame <NUM> is sleeved on the first damping frame <NUM>, and the first damping frame <NUM> is adapted to rotate around the second damping frame <NUM>.

In this embodiment, the household appliance <NUM> further comprises a first damping frame <NUM> and a second damping frame <NUM>. The first damping frame <NUM> is connected to the first fixed seat <NUM>, and the second damping frame is connected to the fixed bracket <NUM>. Therefore, the first fixed seat <NUM> can be supported by the first damping frame <NUM> and the second damping frame <NUM>, and the reliability of the mounting of the first fixed seat <NUM> is improved. The second damping frame <NUM> is sleeved on the first damping frame <NUM>, and the first damping frame <NUM> can rotate around the second damping frame <NUM> so that the first fixed seat <NUM> can rotate around the second fixed seat <NUM> under the driving of the rotary bracket <NUM>.

It could be understood that the axis around which the first damping frame <NUM> rotates around the second damping frame <NUM> coincides with the axis around which the rotary bracket <NUM> rotates around the fixed bracket <NUM>.

Specifically, the coordination of the first damping frame <NUM> and the second damping frame <NUM> serves as a support for the first fixed seat <NUM>, that is, the first fixed seat <NUM> can rotate by taking the first damping frame <NUM> and the second damping frame <NUM> as supporting points.

Specifically, as shown in <FIG>, the first fixed seat <NUM> has two supporting points. One supporting point is composed of a portion of the first fixed seat <NUM> connected to the rotary bracket <NUM>, and the other supporting point is composed of a portion of the first fixed seat <NUM> connected to the first damping frame <NUM>.

Further, the first damping frame <NUM> and the second damping frame <NUM> are located at one end of the fixed bracket <NUM>, and the portion of the rotary bracket <NUM> connected to the first fixed seat <NUM> is located at the other end of the fixed bracket <NUM>, namely, in the direction of the axis around which the rotary bracket <NUM> rotates. The two supporting points of the first fixed seat <NUM> are located at both ends of the rotation driving mechanism <NUM>, thereby improving the supporting effect on the first fixed seat <NUM> and ensuring the reliability of the household appliance <NUM>.

Further, damping fluid is provided between the first damping frame <NUM> and the second damping frame <NUM>.

In this embodiment, damping fluid is provided between the first damping frame <NUM> and the second damping frame <NUM> to provide a damping force as the first damping frame <NUM> rotates around the second damping frame <NUM>, ensuring the stability of the household appliance <NUM>.

It could be understood that the second damping frame <NUM> is sleeved on the first damping frame <NUM>, i. the inner side wall of the second damping frame <NUM> is sleeved outside the outer side wall of the first damping frame <NUM>. Damping fluid is provided between the first damping frame <NUM> and the second damping frame <NUM>, i. the damping fluid is provided between the outer side wall of the first damping frame <NUM> and the inner side wall of the second damping frame <NUM> so that the damping fluid provides a damping force when the first damping frame <NUM> and the second damping frame <NUM> perform a rotational movement.

Specifically, a groove is provided on the first damping frame <NUM> and/or the second damping frame <NUM>, and damping fluid is provided in the groove. It could be understood that damping fluid is a liquid capable of generating a damping force, and capable of damping the kinetic energy of a moving machine by virtue of the viscous drag of the liquid medium. Specifically, the damping fluid includes a viscous liquid, such as oily liquid and the like, depending on the specific usage condition.

According to one embodiment of the present invention, a feature defined in any of the above embodiments is included, and further: the rotation angle of the first fixed seat <NUM> is greater than <NUM>° and less than or equal to <NUM>°.

In this embodiment, the rotation angle of the first fixed seat <NUM> is greater than or equal to <NUM>° and less than or equal to <NUM>°. Specifically, the elevation angle of the rotation of the first fixed seat <NUM> is greater than or equal to <NUM>° and less than or equal to <NUM>°, and the depression angle of the first fixed seat <NUM> is greater than or equal to <NUM>° and less than or equal to <NUM>°, wherein the elevation angle of the first fixed seat <NUM> is the angle of the rotation of the first fixed seat <NUM> from a horizontal position to an upward side, and the depression angle of the first fixed seat <NUM> is the angle of the rotation of the first fixed seat <NUM> from a horizontal position to a downward side.

According to one embodiment of the present invention, the features as defined in any of the above embodiments are included, and further: in any of the above embodiments, further, the household appliance <NUM> further comprises: a Hall plate <NUM> arranged on the second fixed seat <NUM>, wherein the first fixed seat <NUM> is further provided with a magnetic member, and the Hall plate <NUM> is connected to the magnetic member.

In this embodiment, the Hall plate <NUM> is provided on the second fixed seat <NUM>, and a magnetic member is provided on the first fixed seat <NUM>. The movement of the first fixed seat <NUM> at any angle can be realized through the coordination between the Hall plate <NUM> and the magnetic member, namely, the coordination between the Hall plate <NUM> and the magnetic member can enable the first fixed seat <NUM> to rotate any specified angle around the second fixed seat <NUM>. For example, the first fixed seat <NUM> is required to rotate any specified angle around the second fixed seat <NUM> by <NUM>° or <NUM>° or <NUM>°, etc. from an initial position.

Specifically, the Hall plate <NUM> is an component with the Hall effect.

According to one embodiment of the present invention, the features defined in any of the above embodiments are included, and further: the second fixed seat <NUM> is provided with a hollow portion, the hollow portion is provided corresponding to the first damping frame <NUM>, the household appliance <NUM> further comprises a connecting wire, and the connecting wire is adapted to be connected to the second fixed seat <NUM> by passing through the hollow portion from the first fixed seat <NUM>.

In this embodiment, the second fixed seat <NUM> is provided with a hollow portion, and the household appliance <NUM> further comprises a connecting wire. The connecting wire can pass through the hollow portion, namely, the connecting wire can pass through the hollow portion to connect to the first fixed seat <NUM> and other components thereon so that the wiring of the household appliance <NUM> is more reliable.

According to one embodiment of the present invention, the features defined in any of the above embodiments are included, and further: the rotation driving mechanism <NUM> further includes: a driving member <NUM>, wherein the driving member <NUM> and the fixed bracket <NUM> are connected; and a first transmission member <NUM>, wherein the first transmission member <NUM> is connected to the driving member <NUM> and the rotary bracket <NUM>, respectively, the driving member <NUM> being adapted to drive the first transmission member <NUM> to rotate to link the rotary bracket <NUM> to rotate.

In this embodiment, the driving member <NUM> drives the first transmission member <NUM> to rotate so that the first transmission member <NUM> drives the rotary bracket <NUM> to rotate; it could be understood that the first transmission member <NUM> rotates to link the rotary bracket <NUM> to rotate, namely, the driving member <NUM> drives the first transmission member <NUM> to rotate; since the first transmission member <NUM> is connected to the rotary bracket <NUM>, the first transmission member <NUM> can drive the rotary bracket <NUM> to move, namely, the first transmission member <NUM> rotation links the rotary bracket <NUM> to rotate.

Specifically, the driving member <NUM> comprises a motor, and the motor may be a synchronous motor or a stepping motor.

According to the present invention, the features defined by the embodiments described above are included, and further: the fixed bracket <NUM> includes: a body portion, wherein the body portion is connected with the driving member <NUM> and the second fixed seat <NUM>; and a mounting post connected to the body portion, wherein the rotary bracket <NUM> is sleeved on the mounting post, and the rotary bracket <NUM> is adapted to rotate about the mounting post.

In this embodiment, the fixed bracket <NUM> comprises a body portion and a mounting post, and the driving member <NUM> is fixed on the body portion. Meanwhile, the rotation driving mechanism <NUM> can also be fixed on other apparatuses via the body portion. The mounting post is provided on the body portion, and the rotary bracket <NUM> is sleeved on the mounting post, so as to realize the rotation of the rotary bracket <NUM> around the mounting post, and improve the reliability of the connection between the fixed bracket <NUM> and the rotary bracket <NUM>.

Specifically, the rotary bracket <NUM> can rotate circumferentially around the fixed bracket <NUM>. Sleeving the rotary bracket <NUM> on the mounting post of the fixed bracket <NUM> can reduce the size of the rotation driving mechanism <NUM>.

According to the present invention, the body portion has a mounting groove <NUM>, and the first transmission member <NUM> is provided on the mounting groove <NUM>; a first through hole is provided on the wall surface of the mounting groove <NUM>, the first through hole penetrates through the wall surface of the mounting groove <NUM>, and the first transmission member <NUM> is connected to the rotary bracket <NUM> via the first through hole.

According to the present invention, the body portion has a mounting groove <NUM> with the first transmission member <NUM> provided within the mounting groove <NUM> to avoid the exposure of the first transmission member <NUM> to the outer side which affects the aesthetics of the rotation driving mechanism <NUM>. The first transmission member <NUM> is provided in the mounting groove <NUM>, and in order to realize the connection between the first transmission member <NUM> and the rotary bracket <NUM>, a first through hole is provided in the wall surface of the mounting groove <NUM>. This allows the first transmission member <NUM> to be connected to the rotary bracket <NUM> via the first through hole. It could be understood that the first through hole is a through hole penetrating through the wall surface of the mounting groove <NUM>.

Specifically, the rotary bracket <NUM> is sleeved on the outer side of the mounting groove <NUM>.

According to one embodiment of the present invention, the features defined by the embodiments described above are included, and further: the rotary bracket <NUM> includes: a connection portion, wherein the connection portion is sleeved on the mounting post, and one end of the connection portion away from the driving member <NUM> is connected to the first fixed seat <NUM>; and a second transmission member <NUM> connected to the connection portion, wherein the first transmission member <NUM> is connected to the second transmission member <NUM>, and the first transmission member <NUM> is adapted to drive the second transmission member <NUM> to rotate so as to link the connection portion to rotate.

In this embodiment, the rotary bracket <NUM> comprises a connection portion and a second transmission member <NUM> which are connected. The connection portion is sleeved on the mounting post, the second transmission member <NUM> is connected to the first transmission member <NUM>, the driving member <NUM> drives the first transmission member <NUM> to rotate, and the first transmission member <NUM> drives the second transmission member <NUM> to rotate so that the connection portion connected to the second transmission member <NUM> rotates around the mounting post, i. the rotary bracket <NUM> rotates around the fixed bracket <NUM>.

Specifically, the connection portion and the second transmission member <NUM> are of an integrated structure.

According to the present invention, the first transmission member <NUM> is connected to the second transmission member <NUM> via the first through hole.

According to the present invention, the features defined by the embodiments described above are included, and further: the household appliance <NUM> further includes: a damper <NUM> connected to the body portion and provided on the mounting groove <NUM>, the damper <NUM> including a third rotational member; wherein the second through hole is provided on the wall surface of the mounting groove <NUM>, the second through hole penetrates through the wall surface of the mounting groove <NUM>, and the third rotational member is connected to the second transmission member <NUM> via the second through hole.

According to the present invention, the household appliance <NUM> further includes a damper <NUM>. The damper <NUM> is mounted on the body portion and housed in the mounting groove <NUM>. The damper <NUM> comprises a third rotational member, and the third rotational member is connected to the second transmission member <NUM>. When the rotation driving mechanism <NUM> works, the driving member <NUM> drives the first transmission member <NUM> to rotate, the first transmission member <NUM> drives the second transmission member <NUM> to rotate, and the second transmission member <NUM> drives the third rotational member to rotate. When the third rotational member rotates, a damping effect is generated. That is to say, the kinetic energy of the rotation of the second transmission member <NUM> is consumed when the third rotational member rotates so that the kinetic energy of the rotation of the second transmission member <NUM> is attenuated, thereby forming a damping effect. The damper <NUM> ensures the stability of the rotation driving mechanism <NUM> during working, and at the same time, when the rotary bracket <NUM> is forcedly driven by an external force, the reliability of the rotation driving mechanism <NUM> can be ensured by the damping effect of the damper <NUM>.

Specifically, the damper <NUM> further comprises a fixed seat and a limiting seat, wherein the limiting seat is provided on the fixed seat, the third rotational member is sleeved on the limiting seat, and the third rotational member and the limiting seat are adapted to accommodate damping fluid therebetween.

Specifically, the damper <NUM> comprises a fixed seat and a limiting seat. The fixed seat is used for mounting the damper <NUM> on the body portion, the limiting seat is mounted on the fixed seat, and the third rotational member is sleeved on the limiting seat so as to mount the third rotational member on the fixed seat. The third rotational member can rotate around the limiting seat, and damping fluid is accommodated between the third rotational member and the limiting seat. When the third rotational member rotates, it can drive the damping fluid between the third rotational member and the limiting seat to have a certain position change so as to generate energy consumption to generate resistance to the movement of the third rotational member and form a damping effect.

It could be understood that damping fluid is a liquid capable of generating a damping force, and capable of damping the kinetic energy of a moving machine by virtue of the viscous drag of the liquid medium. Specifically, the damping fluid includes a viscous liquid, such as oily liquid and the like, depending on the specific usage condition.

Of course, the damper <NUM> may be another mechanism capable of forming a damping effect.

Further, each of the first transmission member <NUM>, the second transmission member <NUM>, and the third rotational member comprises a gear structure, and the first transmission member <NUM> and the second transmission member <NUM> are drivingly engaged through a gear structure, and the second transmission member <NUM> and the third rotational member are drivingly engaged through a gear structure.

In this embodiment, the first transmission member <NUM>, the second transmission member <NUM>, and the third rotational member all comprise a gear structure, and the first transmission member <NUM> and the second transmission member <NUM> are connected via the gear structure to realize a gear transmission and improve the reliability of the connection therebetween. The second transmission member <NUM> and the third rotational member are connected via the gear structure to realize a gear transmission and improve the reliability of the connection therebetween.

Specifically, the first transmission member <NUM> is an outer gear, the second transmission member <NUM> is an inner gear, and the third rotational member is an outer gear. That is to say, the first transmission member <NUM> and the second transmission member <NUM> are both located in the second transmission member <NUM> and are connected to the third rotational member. The rotation of the first transmission member <NUM> drives the rotation of the second transmission member <NUM>, and the rotation of the third rotational member has a damping effect on the rotation of the second transmission member <NUM>.

According to one embodiment of the present invention, the features defined by the embodiments described above are included, and further: the driving member <NUM> comprises a rotor and an output shaft connected to the rotor, and the output shaft is connected to the first transmission member <NUM>. The rotation axis of the rotor, the axis of the mounting post, and the axis around which the rotary bracket <NUM> rotates are arranged coaxially, or the rotation axis of the rotor and the axis of the mounting post do not coincide.

In this embodiment, the driving member <NUM> comprises an output shaft and a rotor, and the rotor rotates to drive the output shaft to rotate so that the first connecting member is driven to rotate via the output shaft. The axis rotated by the rotor, the axis of the mounting post, and the axis around which the rotary bracket <NUM> rotates are arranged coaxially so that the space occupied by the rotation driving mechanism <NUM> is reduced. Alternatively, the axis around which the rotor rotates and the axis of the mounting post do not coincide, i. the rotary bracket <NUM> moves eccentrically with respect to the driving member <NUM>, so that the rotation driving mechanism <NUM> can be applied to different apparatuses depending on the actual situation.

According to one embodiment of the present invention, the features defined in any one of the above embodiments are included, and further: the household appliance <NUM> further includes: a support bearing <NUM> provided between the rotary bracket <NUM> and the mounting post; a limiting member along the direction of the axis about which the rotary bracket <NUM> rotates, the limiting member being located at one end of the rotary bracket <NUM> away from the driving member <NUM>; a friction plate <NUM>, along the direction of the axis about which the rotary bracket <NUM> rotates, the friction plate <NUM> being arranged between the rotary bracket <NUM> and the limiting member; and a limiting structure connected to the fixed bracket <NUM>, the limiting structure being adapted to limit the rotation angle of the rotary bracket <NUM>.

In this embodiment, the household appliance <NUM> further comprises a support bearing <NUM>. The support bearing <NUM> is mounted inside the rotary bracket <NUM> and nested on the mounting post for connecting the rotary bracket <NUM> and the mounting post; the household appliance <NUM> further comprises a limiting member, wherein the limiting member is arranged on the rotary bracket <NUM> and is located at one end of the rotary bracket <NUM> away from the driving member <NUM>; at the same time, the limiting member is clamped on the fixed bracket <NUM>, thereby defining the support bearing <NUM> on the mounting post; the household appliance <NUM> further comprises a friction plate <NUM> mounted between the rotary bracket <NUM> and the limiting member and being made of a wear-resistant and easy-to-wear material, which can achieve the control of the gap between the rotary bracket <NUM> and the fixed bracket <NUM> and stabilize the rotation driving mechanism <NUM>; at the same time, the friction plate <NUM> has a lubricating effect when the rotary bracket <NUM> rotates. The fixed bracket <NUM> is further provided with a limiting structure thereon, and the limiting structure can limit the rotary bracket <NUM> so as to fix the rotated rotary bracket <NUM> after rotation in a specified position.

Specifically, the limiting member is a snap spring. Specifically, the friction plate <NUM> is a gasket made of a wear-resistant material, and further, the friction plate <NUM> is an elastic cushion.

Further, the household appliance <NUM> includes any one of the fan, air conditioner, and heater.

In this embodiment, the household appliance <NUM> comprises any one of the fan, air conditioner, or heater. Specifically, when the household appliance <NUM> is a fan, the mounting portion is a support structure, the rotational portion is a fan head, and the axis around which the rotary bracket <NUM> rotates in the rotation driving mechanism <NUM> is perpendicular to the length direction of the support structure so that the fan head can rotate up and down, namely, the adjustment of the pitch angle of the fan head is realized.

Specifically, when a household air conditioner comprises a heater, the heater comprises a head portion and a support portion. The head portion is provided with a heat-dissipating structure, the head portion and the support portion are connected via the rotation driving mechanism <NUM>, and the rotation axis of the rotary bracket <NUM> can be arranged perpendicular to the length direction of the support portion, thereby achieving the adjustment of the pitch angle of the heater.

As shown in <FIG>, according to one specific embodiment of the present invention, a household appliance <NUM> comprises a second fixed seat <NUM>, a first fixed seat <NUM>, and a rotation driving mechanism <NUM>, the first fixed seat <NUM> being used for fixing an appliance such as a fan head of a fan. The first fixed seat <NUM> is used for supporting and mounting the rotation driving mechanism <NUM>, and the second fixed seat <NUM>, the first fixed seat <NUM> and the rotation driving mechanism <NUM> are supported via a fulcrum; the single-arm uses one fulcrum (the supporting point formed by the portion of the rotary bracket <NUM> connected with the first fixed seat <NUM>), the two-arm uses two fulcrums (the supporting point formed by the portion of the rotary bracket <NUM> connected with the first fixed seat <NUM>, and the supporting point formed by the first fixed seat <NUM>, the first damping frame <NUM>, and the second damping frame <NUM>), and by centering on the fulcrum, first fixed seat <NUM> rotates with the operation of driving member <NUM> (motor) in rotation driving mechanism <NUM>.

The maximum depression angle is designed to be -<NUM>°, and the maximum elevation angle is designed to be <NUM>°. According to the need, the pitch angle (the other side) can be adjusted from -<NUM>° to <NUM>°, and the pitch angle ranges from <NUM>° to <NUM>°. Further, if the Hall plate is added, any angle adjustment from -<NUM>° to <NUM>° and <NUM>° to -<NUM>° can be realized.

As shown in <FIG>, a single-arm household appliance <NUM> capable of realizing an automatic pitch function is shown, including a second fixed seat <NUM>, a first fixed seat <NUM>, and a rotation driving mechanism <NUM>, and the exploded view is as shown in <FIG>, comprising:.

The working principle of the household appliance <NUM> proposed in the present invention is that: when the driving motor moves, power is transmitted to the rotary bracket <NUM> by driving the gear, and the rotary bracket <NUM>, together with the first fixed seat <NUM>, rotates by taking the fulcrum as the center.

As shown in <FIG>, a two-arm household appliance <NUM> capable of realizing an automatic pitch function is shown, including a second fixed seat <NUM>, a first fixed seat <NUM>, and a rotation driving mechanism <NUM>, and the exploded view is as shown in <FIG>, comprising:.

The wiring at the joint is on the side of the first damping frame <NUM>, and the middle of the left side of the movable joint of the first fixed seat <NUM> is hollowed out, which is convenient and reliable for wiring. This design uses the joint movement mode to add a friction plate <NUM> and a damper <NUM>. The adjustment of the pitch angle of the appliance is skillfully realized through modular assemblies such as the rotation driving mechanism <NUM> so that the mechanism is stable and reliable, and the mounting is simple. By adjusting the power of the driving motor, the structure is optimized according to the product, which can be used for most apparatuses with automatic adjusting movement.

In the present invention, the term "multiple" refers to two or more unless explicitly defined otherwise. Terms "mounted", "connected", "connect", "fixed", and the like are to be construed broadly. For example, "connect" may be a fixed connection, a detachable connection, or an integral connection; "connected" can be either directly connected or indirectly connected through an intermediary. For a person of ordinary skills in the art, the specific meaning of the above-mentioned terms in the present invention can be understood according to specific situations.

In the specification of the present invention, the description of "one embodiment", "some embodiments", "specific embodiments", etc. mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific feature, structure, material, or characteristic described may be combined in any suitable manner in any one or more embodiments or examples.

Claim 1:
A rotation driving mechanism (<NUM>) for realizing a head-shaking function of an air supply apparatus (<NUM>), comprising:
a fixed bracket (<NUM>);
a rotary bracket (<NUM>), wherein the rotary bracket (<NUM>) is sleeved on the fixed bracket (<NUM>) and is rotatable with respect to the fixed bracket (<NUM>); and
a driving member (<NUM>), wherein the driving member (<NUM>) is provided on the fixed bracket (<NUM>), and the driving member (<NUM>) drives the rotary bracket (<NUM>) to rotate; and
a first transmission member (<NUM>), the rotary bracket (<NUM>) being provided with a second transmission member (<NUM>) drivingly coordinating with the first transmission member (<NUM>), and the first transmission member (<NUM>) being connected to a driving shaft of the driving member (<NUM>), wherein the fixed bracket (<NUM>) comprises a body portion (<NUM>), the body portion (<NUM>) defines a mounting groove (<NUM>), a side wall of the mounting groove (<NUM>) has a first through hole (<NUM>), the first transmission member (<NUM>) is located in the mounting groove (<NUM>), and the first transmission member (<NUM>) drivingly coordinates with the second transmission member (<NUM>) via the first through hole (<NUM>);
characterized in that the rotation driving mechanism further comprises:
a damper (<NUM>), wherein the side wall of the mounting groove (<NUM>) has a second through hole (<NUM>), the damper (<NUM>) is provided on the fixed bracket (<NUM>) and is located in the mounting groove (<NUM>), and the damper (<NUM>) drivingly coordinates with the second transmission member (<NUM>) via the second through hole (<NUM>).