CN114060429A

CN114060429A - Clutch of motor

Info

Publication number: CN114060429A
Application number: CN202111331340.9A
Authority: CN
Inventors: 黄海清
Original assignee: Guangzhou Haodi Window And Door Co ltd
Current assignee: Guangzhou Haodi Window And Door Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-02-18

Abstract

The invention relates to the technical field of clutches, in particular to a clutch of a motor, which comprises a clutch disc, a clutch column, a thumb wheel assembly for inputting rotation and an output sleeve for outputting rotation, wherein the clutch disc is fixedly arranged and comprises a magnetic inner ring and a non-magnetic outer ring; the inner wall of the output sleeve is provided with a clamping groove, the shifting wheel and the clutch column are positioned in the output sleeve, the shifting wheel rotates to drive the clutch column to be clamped into the clamping groove to realize the joint of the shifting wheel and the output sleeve, and the magnetic inner ring adsorbs the clutch column to be separated from the clamping groove to realize the separation of the shifting wheel and the output sleeve. This clutch does not receive service environment restriction, and can realize the separation and reunion of two positive and negative directions, and the joint of clutch is smooth and easy with the switching of declutching, is difficult for appearing the jamming wearing and tearing, also can realize the declutching of clutch through manual intervention at any time during the motor rotates, and the clutch can resume the engaged state rapidly again when stopping manual intervention, convenient to use.

Description

Clutch of motor

Technical Field

The invention relates to the technical field of clutches, in particular to a clutch of a motor.

Background

With the development of motor technology, a motor equipped with a clutch has been widely used in various fields of industry or life, and the engagement and disengagement of the clutch is used to realize the switching between electric and manual operation, such as an electric door in the automobile field, an electric door window in the building field, and the like. The existing clutch is generally divided into an electric (electromagnetic) clutch and a mechanical clutch, wherein the electric (electromagnetic) clutch is harsh in use condition and cannot be used when no electricity is available, and in addition, certain requirements are also provided for use environment (such as environment temperature), although some existing mechanical clutches can realize electric and manual switching, the problems that the switching between connection and disconnection of the clutch is not smooth, the structure is too complex, manual intervention cannot be realized when a motor rotates and the like often exist, for example, an invention patent (publication No. CN111197444A) previously applied by an applicant discloses an automatic clutch, the clutch comprises a clutch disc, steel balls, a shifting block and an output sleeve, a radial sliding groove for the steel balls to slide in a reciprocating manner is arranged on the clutch disc, a magnet column is fixedly arranged at the lower end of the sliding groove, a clamping groove is arranged on the inner wall of the output sleeve, and the shifting block is driven to rotate by the motor, the automatic clutch can realize the engagement and disengagement of the clutch by driving the steel balls to slide in the sliding grooves to be clamped into the clamping grooves on the output sleeve, the disengagement of the clutch is realized by adsorbing the steel balls from the clamping grooves through the magnets, the automatic clutch can realize the engagement and disengagement of the clutch though the structure is complex, and the steel balls can only slide in the sliding grooves in a reciprocating manner, and the magnet columns are arranged at the lower ends of the sliding grooves in a punctiform manner, so that the steel balls can be adsorbed and disengaged from the clamping grooves only when the sliding grooves are completely aligned with the clamping grooves and the steel balls, therefore, when the motor stops rotating, the motor also needs to be arranged to rotate reversely by a certain angle to ensure that the magnet columns can adsorb and disengage the steel balls from the clamping grooves to realize the disengagement of the clutch, so that the disengagement of the clutch is not smooth and inconvenient to use, the clamping stagnation and the abrasion are easy to occur in the process, and in addition, the disengagement of the clutch is difficult to realize under the condition that the motor does not stop rotating, i.e. it is difficult to intervene manually directly when the motor is rotating.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the clutch of the motor, which belongs to mechanical clutch, is not easily influenced by the environment when in use, has simple structure, can realize the clutch in the positive and negative directions, is smooth in the switching of the connection and the disconnection of the clutch, is not easy to generate clamping and wearing, can realize the disconnection of the clutch through manual intervention at any time when the motor rotates, can quickly recover the connection state when the manual intervention is stopped, and is convenient to use.

The task of the invention is realized by the following technical scheme:

a clutch for an electric machine, comprising: the clutch disc is fixedly arranged in a shell of the clutch and comprises a magnetic inner ring and a non-magnetic outer ring; the clutch column is movably arranged on the front side of the clutch disc, one of the clutch column and the magnetic inner ring is a permanent magnet, and the other one of the clutch column and the magnetic inner ring is a permanent magnet or a magnetic conductive material, so that the clutch column can be adsorbed on the magnetic inner ring in a natural state; the shifting wheel assembly comprises a rotating shaft and a shifting wheel fixed on the rotating shaft, the shifting wheel is positioned on the front side of the clutch disc, shifting teeth used for pushing the clutch column to move are arranged on the shifting wheel, and the rear end of the rotating shaft penetrates through a central hole of the clutch disc and is used for being directly or indirectly connected with a motor to input rotation; output sleeve for the output rotates, and output sleeve's inner wall is equipped with the draw-in groove that is used for supplying the separation and reunion post part card to go into, thumb wheel and separation and reunion post are located output sleeve, and the external diameter of dialling the tooth is equal and all is greater than with output sleeve's internal diameter the external diameter of magnetism inner circle drives separation and reunion post card to go into the draw-in groove through the thumb wheel rotation and realizes thumb wheel and output sleeve's joint, adsorbs separation and reunion post through magnetism inner circle and breaks away from the draw-in groove and realize thumb wheel and output sleeve's disengagement.

According to a preferable technical scheme, the magnetic inner ring is an annular permanent magnet and is arranged concentrically with the clutch disc, the front side end faces of the magnetic inner ring and the non-magnetic outer ring are flush, the clutch column is made of cylindrical or spherical magnetic conducting materials, and the shell, the non-magnetic outer ring, the dial wheel and the output sleeve of the clutch are made of non-magnetic conducting materials.

As a preferable technical scheme, two side surfaces of the shifting tooth are symmetrical inclined surfaces so that the shifting tooth gradually narrows from a root part to an end part, and the two side surfaces are respectively used for pushing the clutch column when the shifting tooth rotates forwards or backwards.

As a preferred technical scheme, the poking wheel is provided with at least two poking teeth at equal intervals along the circumferential direction, the number of the clutch columns and the number of the clamping grooves are one or more times of the number of the poking teeth, and the clamping grooves are evenly distributed along the circumferential direction of the output sleeve at intervals.

As an optimal technical scheme, each shifting tooth is correspondingly provided with one clutch column, and each clutch column is positioned on the same side of the corresponding shifting tooth.

As an optimal technical scheme, each shifting tooth is correspondingly provided with two clutch columns, and the two clutch columns are respectively positioned at two sides of the corresponding shifting tooth and are close to the corresponding shifting tooth.

As a preferred technical scheme, a support bearing is arranged at the center of the bottom of the output sleeve, and the front end of the rotating shaft extends into the support bearing and is rotatably connected with the support bearing.

As a preferable technical scheme, the housing of the clutch comprises a first housing and a second housing which are detachably connected in an involutory manner, wherein the clutch disc is fixedly arranged in the first housing, and the output sleeve is rotatably arranged in the second housing.

Preferably, the center of the front end of the output sleeve is provided with an output shaft or an output shaft hole.

The working principle of the clutch of the motor is as follows: the rotating shaft of the clutch is in direct or indirect (such as through a speed reducer) transmission connection with the motor, when the motor rotates forwards or reversely, the poking wheel can be driven to rotate, and because the outer diameter of the poking teeth is equivalent to the inner diameter of the output sleeve and is larger than the outer diameter of the magnetic inner ring, under the combined action of continuous pushing of the edge of the poking teeth and centrifugal force, the clutch column can break away from the magnetic attraction of the magnetic inner ring on the clutch disc to move outwards until part of the magnetic inner ring is clamped into the clamping groove of the output sleeve, and the poking teeth drive the output sleeve to rotate synchronously by continuously pushing the clutch column clamped in the clamping groove, so that the engaging state of the clutch is realized; when the motor stops rotating or the motor does not stop rotating and external force intervenes to drive the output sleeve and the shifting wheel to rotate in the same direction and the rotating speed is larger than the rotating speed of the shifting wheel, the clutch column obtains free moving space so as to be capable of being rapidly separated from the clamping groove of the output sleeve and adsorbed on the magnetic inner ring under the action of magnetic attraction of the magnetic inner ring on the clutch disc, at the moment, the shifting teeth and the output sleeve are in a separated state, the rotation of the output sleeve cannot interfere with the shifting wheel and the motor, namely, the separated state of the clutch is realized, at the moment, if the motor still operates and the external force stops intervening, the shifting wheel can rapidly push the clutch column into the clamping groove of the output sleeve again to realize the engagement of the clutch. It should be noted that, because the motor (or the reducer) itself may have some fit clearance, when the motor stops, the clutch column can obtain a little free space even if the motor is reversed without additional program, and certainly, if the motor stops and then slightly reverses, the clutch column can obtain free space.

Compared with the prior art, the clutch of the motor has the following advantages: the clutch belongs to mechanical clutch, is not easily influenced by environment when in use, has simple structure, can realize the clutch in the positive and negative directions, has smooth switching between the connection and the disconnection of the clutch, is not easy to generate clamping abrasion, can realize the disconnection of the clutch through manual intervention at any time when a motor rotates, can quickly recover the connection state when stopping manual intervention, and is convenient to use; the magnetic inner ring is an annular permanent magnet and is arranged concentrically with the clutch disc, so that no matter the shifting wheel pushes the clutch column and the output sleeve to rotate to any angle, the clutch column can be quickly separated from the clamping groove and adsorbed on the magnetic inner ring by the same magnetic attraction force of the magnetic inner ring as long as the clutch column obtains a free moving space, and the situations of clamping stagnation and unsmooth clutch separation are not easy to occur; the front side end faces of the magnetic inner ring and the non-magnetic outer ring are flush, so that the front side face of the clutch disc is a smooth surface, the shifting wheel can conveniently push the clutch column to move on the clutch disc at will, and clamping stagnation is not easy to occur; the shell, the non-magnetic outer ring, the shifting wheel and the output sleeve of the clutch are all non-magnetic materials, so that interference influence on magnetic attraction between the magnetic inner ring and the clutch column is avoided, and influence caused by magnetization after long-term use is avoided; the two side surfaces of the shifting tooth are symmetrical inclined planes, are narrow outside and wide inside, so that the side surfaces of the shifting tooth have a guiding effect on the clutch column no matter the shifting wheel rotates forwards or reversely, the clutch column is more conveniently pushed into a clamping groove of the output sleeve, and after the clutch column enters the clamping groove, the side surfaces of the shifting tooth obliquely extrude the clutch column, so that tangential thrust and radial outward pressure can be simultaneously applied to the clutch column, and the clutch column is more conveniently clamped in the clamping groove and pushes the output sleeve to rotate; sixthly, the shifting wheel is uniformly provided with at least two shifting teeth at intervals along the circumferential direction, and each shifting tooth is correspondingly provided with a clutch column, so that the pushing force of the shifting wheel on the output sleeve through the clutch columns is more balanced; seventhly, as a preferred mode, each shifting tooth is correspondingly provided with two clutch columns, and the two clutch columns are respectively positioned at two sides of the shifting tooth and close to the corresponding shifting tooth, so that the shifting wheel can more quickly push the clutch columns close to the shifting tooth to enter the clamping groove to realize a joint state no matter the shifting wheel rotates forwards or backwards; the number of the clamping grooves is integral multiple of the number of the poking teeth, so that the poking wheel can more quickly push the clutch columns to enter the nearby clamping grooves to realize a joint state; ninthly, the front end of the rotating shaft is rotatably connected with the output sleeve, so that the supporting of the shifting wheel assembly is facilitated; the R is through setting up clutch disc and output sleeve respectively in can dismantling the first casing and the second casing to closing the connection, the dismouting of the clutch of being convenient for.

The conception, specific structure and effects of the present invention will be further described in conjunction with the accompanying drawings to fully understand the objects, features and effects of the present invention.

Drawings

FIG. 1 is an exploded view of a clutch of an electric machine of the present invention in a disengaged state;

fig. 2 is an exploded view of a clutch of an electric machine according to the present invention in an engaged state.

Wherein: the clutch device comprises a first shell 11, a second shell 12, a clutch disc 13, a magnetic inner ring 131, a non-magnetic outer ring 132, a clutch column 14, a rotating shaft 15, a dial wheel 16, a dial tooth 161, an output sleeve 17, a clamping groove 171, a support bearing 172 and an output shaft 173.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1-2, a clutch for an electric machine, comprising: the first shell 11 and the second shell 12 are detachably connected in an involutory manner; the clutch disc 13 is fixedly arranged in the first shell 11, the clutch disc 13 comprises a magnetic inner ring 131 and a non-magnetic outer ring 132, the magnetic inner ring 131 is an annular permanent magnet and is arranged concentrically with the clutch disc 13, and the front end faces of the magnetic inner ring 131 and the non-magnetic outer ring 132 are flush; the clutch column 14 is movably arranged on the front side of the clutch disc 13, the clutch column 14 is a magnetic circular steel column, and the clutch column 14 can be adsorbed on the magnetic inner ring 131 in a natural state; the shifting wheel assembly comprises a rotating shaft 15 and a shifting wheel 16 fixed on the rotating shaft 15, the shifting wheel 16 is positioned on the front side of the clutch disc 13, a shifting tooth 161 used for pushing the clutch column 14 to move is arranged on the shifting wheel 16, and the rear end of the rotating shaft 15 penetrates through a central hole of the clutch disc 13 and is used for being directly or indirectly connected with a motor to input rotation; output sleeve 17 for the output rotates, and output sleeve 17's inner wall is equipped with the draw-in groove 171 that is used for supplying the partial card of clutch post 14 to go into (the diameter of clutch post 14 is greater than the degree of depth of draw-in groove 171 promptly), and the port department at output sleeve 17 is established to clutch disc 13 lid, thumb wheel 16 and clutch post 14 are located output sleeve 17, and the external diameter of thumb wheel 161 and the internal diameter of output sleeve 17 are equal and all be greater than the external diameter of magnetism inner circle 131 rotates to drive clutch post 14 card income draw-in groove 171 through thumb wheel 16 and realizes thumb wheel 16 and the joint of output sleeve 17, adsorbs clutch post 14 through magnetism inner circle 131 and breaks away from draw-in groove 171 and realizes the declutching of thumb wheel 16 and output sleeve 17. The first shell 11, the second shell 12, the non-magnetic outer ring 132, the thumb wheel 16 and the output sleeve 17 are all made of non-magnetic materials.

The working principle of the clutch is as follows: the rotating shaft 15 of the clutch is in direct or indirect (for example, through a speed reducer) transmission connection with the motor (the motor and the speed reducer are not shown in the drawing), when the motor rotates in the forward direction or the reverse direction, the shifting wheel 16 can be driven to rotate, because the outer diameter of the shifting tooth 161 and the inner diameter of the output sleeve 17 are equal and are both larger than the outer diameter of the magnetic inner ring 131, under the combined action of continuous pushing of the edge of the shifting tooth 161 and centrifugal force, the clutch column 14 can get rid of the outward movement of the magnetic attraction of the magnetic inner ring 131 on the clutch disc 13 until part of the magnetic inner ring 131 is clamped into the clamping groove 171 of the output sleeve 17 (as shown in fig. 2), and the shifting tooth 161 drives the output sleeve to rotate synchronously by continuously pushing the clutch column clamped in the clamping groove 171, that is, so that the engaging state of the clutch is realized; when the motor stops rotating or an external force is applied to the motor to drive the output sleeve 17 and the dial wheel 16 to rotate in the same direction and the rotating speed is greater than the rotating speed of the dial wheel 16, the clutch post 14 obtains a free moving space so as to be capable of being rapidly separated from the clamping groove 171 of the output sleeve 17 and adsorbed on the magnetic inner ring 131 under the action of the magnetic attraction force of the magnetic inner ring 131 on the clutch disc 13, at this time, the dial teeth 161 and the output sleeve 17 are in a separated state (as shown in fig. 1), the rotation of the output sleeve 17 cannot interfere with the dial wheel 16 and the motor, namely, a separated state of the clutch is realized, and at this time, if the motor is still running and the external force stops interposing, the dial wheel 16 can be rapidly pushed into the clamping groove 171 of the output sleeve 17 again to realize the engagement of the clutch. It should be noted that, since the motor (or the reducer) itself has some fit clearance, when the motor stops, the clutch column 14 can obtain a little free space even if the motor is reversed without additional program, and certainly, if the motor stops and is slightly reversed, the clutch column 14 can obtain free space.

The two side surfaces of the shifting teeth 161 are symmetrical inclined surfaces so that the shifting teeth 161 are gradually narrowed from the root to the end and are respectively used for pushing the clutch column 14 when the shifting teeth 161 rotate forwards or reversely; the side of dialling tooth 161 is the inclined plane design, all has the guide effect to clutch post 14, is convenient for more push the draw-in groove 171 of output sleeve 17 with clutch post, and clutch post gets into draw-in groove 171 back, dials the side slope extrusion clutch post 14 of tooth 161, can exert tangential thrust and radial outside pressure simultaneously to clutch post 14, is convenient for more that the clutch post chucking is in draw-in groove 171 and promote output sleeve 17 to rotate.

The two opposite sides of the dial wheel 16 are respectively provided with a dial tooth 161, each dial tooth 161 is correspondingly provided with one clutch column 14, and each clutch column 14 is located on the same side (clockwise side or counterclockwise side) of the corresponding dial tooth 161, the number of the clamping grooves 171 is equal to the number of the dial teeth 161 and is uniformly distributed along the circumference of the output sleeve 17 at intervals, so that no matter the dial wheel 16 rotates in the forward direction or in the reverse direction, one clutch column 14 can be pushed to enter one clamping groove 171 to realize the engagement state. In other embodiments, the number of the shifting teeth, the clutch posts and the clamping grooves can be one, and the function of the clutch can be realized.

In a preferred embodiment, each of the shifting teeth 161 is correspondingly provided with two clutch columns 14, and the two clutch columns 14 are respectively located at two sides of the corresponding shifting tooth 161 and close to the corresponding shifting tooth 161, so that the shifting wheel 16, whether rotating forwards or reversely, can more quickly push the clutch column 14 close to the shifting tooth 161 into the clamping groove 171 to achieve the engaged state, which is not shown in the drawings.

In a preferred embodiment, the number of the slots 171 is two or more times the number of the dialing teeth 161, and the slots 171 are evenly spaced along the circumference of the output sleeve 17, so that the dialing wheel 16 can more quickly push the clutch post 14 into the nearby slot 171 to achieve the engaged state, which is not shown in the figure.

The output sleeve 17 is provided with a support bearing 172 at the bottom center, and the front end of the rotating shaft 15 extends into the support bearing 172 and is rotatably connected with the support bearing 172, which further contributes to the support of the thumb wheel 16 assembly.

The center of the front end of the output sleeve 17 is provided with an output shaft 173 for realizing output transmission, and in other embodiments, a gear or other modes can be arranged on the side surface of the output sleeve 17 for realizing output transmission.

Compared with the prior art, the clutch of the motor has the following advantages: the clutch belongs to mechanical clutch, is not easily influenced by environment when in use, has simple structure, can realize the clutch in the positive and negative directions, has smooth switching between the connection and the disconnection of the clutch, is not easy to generate clamping abrasion, can realize the disconnection of the clutch through manual intervention at any time when a motor rotates, can quickly recover the connection state when stopping manual intervention, and is convenient to use; the magnetic inner ring 131 is an annular permanent magnet and is arranged concentrically with the clutch disc 13, so that no matter the shifting wheel 16 pushes the clutch column and the output sleeve 17 to rotate to any angle, the clutch column can be quickly separated from the clamping groove 171 and adsorbed on the magnetic inner ring 131 by the same magnetic attraction of the magnetic inner ring 131 as long as the clutch column obtains a free moving space, and the situations of clamping stagnation and unsmooth clutch separation are not easy to occur; the front side end faces of the magnetic inner ring 131 and the non-magnetic outer ring 132 are flush, so that the front side face of the clutch disc 13 is a smooth surface, the shifting wheel 16 can push the clutch column to move on the clutch disc 13 freely, and clamping stagnation is not easy to occur; the shell, the non-magnetic outer ring 132, the thumb wheel 16 and the output sleeve 17 of the clutch are all non-magnetic conducting materials, so that interference influence on the magnetic attraction force between the magnetic inner ring 131 and the clutch column 14 is avoided, and influence caused by magnetization after long-term use is avoided; both side surfaces of the shifting teeth 161 are symmetrical inclined surfaces, are narrow outside and wide inside, so that the side surfaces of the shifting teeth 161 have a guiding effect on the clutch column 14 no matter the shifting wheel 16 rotates forwards or reversely, the clutch column is more conveniently pushed into the clamping groove 171 of the output sleeve 17, and after the clutch column enters the clamping groove 171, the side surfaces of the shifting teeth 161 obliquely extrude the clutch column 14, tangential thrust and radial outward pressure are simultaneously applied to the clutch column 14, and the clutch column is more conveniently clamped in the clamping groove 171 and pushes the output sleeve 17 to rotate; sixthly, at least two shifting teeth 161 are uniformly arranged on the shifting wheel 16 at intervals along the circumferential direction, and each shifting tooth 161 is correspondingly provided with a clutch column 14, so that the pushing force of the shifting wheel 16 on the output sleeve 17 through the clutch columns 14 is more balanced; seventhly, each shifting tooth 161 is correspondingly provided with two clutch columns 14, and the two clutch columns 14 are respectively positioned at two sides of the shifting tooth 161 and are close to the corresponding shifting tooth 161, so that the shifting wheel 16 can more quickly push the clutch columns 14 close to the shifting tooth 161 to enter the clamping groove 171 to realize a joint state no matter the shifting wheel rotates forwards or backwards; the number of the clamping grooves 171 is integral multiple of the number of the poking teeth 161, so that the poking wheel 16 can more quickly push the clutch column 14 to enter the nearby clamping grooves 171 to realize the joint state; ninthly, the front end of the rotating shaft 15 is rotatably connected with the output sleeve, so that the supporting of the dial wheel 16 component is facilitated; the R (R) is characterized in that the clutch disc 13 and the output sleeve 17 are respectively arranged in a first shell and a second shell which are detachably connected in an involutory mode, so that the clutch can be conveniently disassembled and assembled.

The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.

Claims

1. A clutch for an electric machine, comprising:

the clutch disc is fixedly arranged in a shell of the clutch and comprises a magnetic inner ring and a non-magnetic outer ring;

the clutch column is movably arranged on the front side of the clutch disc, one of the clutch column and the magnetic inner ring is a permanent magnet, and the other one of the clutch column and the magnetic inner ring is a permanent magnet or a magnetic conductive material, so that the clutch column can be adsorbed on the magnetic inner ring in a natural state;

the shifting wheel assembly comprises a rotating shaft and a shifting wheel fixed on the rotating shaft, the shifting wheel is positioned on the front side of the clutch disc, shifting teeth used for pushing the clutch column to move are arranged on the shifting wheel, and the rear end of the rotating shaft penetrates through a central hole of the clutch disc and is used for being directly or indirectly connected with a motor to input rotation;

output sleeve for the output rotates, and output sleeve's inner wall is equipped with the draw-in groove that is used for supplying the separation and reunion post part card to go into, thumb wheel and separation and reunion post are located output sleeve, and the external diameter of dialling the tooth is equal and all is greater than with output sleeve's internal diameter the external diameter of magnetism inner circle drives separation and reunion post card to go into the draw-in groove through the thumb wheel rotation and realizes thumb wheel and output sleeve's joint, adsorbs separation and reunion post through magnetism inner circle and breaks away from the draw-in groove and realize thumb wheel and output sleeve's disengagement.

2. The clutch of the motor according to claim 1, wherein the magnetic inner ring is an annular permanent magnet and is concentrically disposed with the clutch disc, front side end faces of the magnetic inner ring and the non-magnetic outer ring are flush, the clutch post is a cylindrical or spherical magnetic conductive material, and the housing, the non-magnetic outer ring, the dial wheel and the output sleeve of the clutch are all made of a non-magnetic conductive material.

3. The clutch of the electric motor according to claim 1, wherein both side surfaces of the shift tooth are symmetrically inclined surfaces so that the shift tooth is gradually narrowed from a root portion to an end portion, and the shift tooth is used for pushing the clutch post in forward rotation and reverse rotation, respectively.

4. The clutch of the motor according to claim 1, wherein the dial wheel is provided with at least two dial teeth at uniform intervals along the circumferential direction, the number of the clutch posts and the number of the clamping grooves are respectively one or more times of the number of the dial teeth, and the clamping grooves are distributed at uniform intervals along the circumferential direction of the output sleeve.

5. The clutch of the motor according to claim 4, wherein each of the plurality of shifting teeth is provided with one of the plurality of engaging posts, and each of the plurality of engaging posts is located on the same side of the corresponding shifting tooth.

6. The clutch of the motor according to claim 4, wherein two of the engaging posts are disposed on each of the shifting teeth, and the two engaging posts are respectively disposed on two sides of the corresponding shifting tooth and close to the corresponding shifting tooth.

7. The clutch for an electric motor according to claim 1, wherein a support bearing is provided at a bottom center of the output sleeve, and a front end of the rotating shaft extends into the support bearing and is rotatably connected thereto.

8. The clutch of the electric machine according to claim 1, wherein the housing of the clutch includes a first housing and a second housing detachably coupled to each other, wherein the clutch disc is fixedly disposed in the first housing, and the output sleeve is rotatably disposed in the second housing.

9. The clutch for an electric motor according to claim 1, wherein an output shaft or an output shaft hole is provided at the center of the front end of the output sleeve.