Clutch assembly of driving motor

Abstract

The clutch assembly of the driving motor comprises the spline sleeve, the driving gear ring and the driven gear ring are arranged on the spline sleeve in a sleeved mode, the driving gear ring is in transmission connection with the speed reducing mechanism and can idle in the circumferential direction of the spline sleeve, and the driven gear ring and the spline sleeve are meshed and rotate synchronously. The driven gear ring can slide in the axial direction of the spline sleeve under the action of the shifting fork to be meshed with or disengaged from the driving gear ring, connection or disconnection of the transmission relation is achieved, the clutch assembly is of the spline sleeve, the driving gear ring, the driven gear ring and the shifting fork structure, and therefore the high-stability clutch device is provided. Due to the meshing mode of the spline sleeve and the driven gear ring, stability and reliability of power transmission are guaranteed, the driving gear ring can circumferentially rotate relative to the spline sleeve, the driven gear ring can axially slide relative to the spline sleeve under the action of the shifting fork, and clutch operation is more accurate and reliable through the structural design.

Description

TECHNICAL FIELD

[0001] The utility model relates to drive motor power output clutch device, concretely relates to the clutch assembly of drive motor applied in the pick-up truck or truck box cover roller. BACKGROUND

[0002] With the development of vehicles, pick-up trucks or trucks with a top opening of a cargo area are becoming more and more popular. The loading area of the pick-up truck is usually provided with an electric roller curtain, which can be opened or closed according to the instruction. When the vehicle's power system fails, such as battery power failure, motor failure or circuit short circuit, etc., the electric roller curtain cannot work normally, and the manual function can be used as an emergency measure to allow the user to normally open or close the roller curtain, avoiding the impact on the loading or unloading of goods due to the inoperability of the roller curtain. In addition, if the remote controller of the electric roller curtain is lost, damaged or the signal is disturbed, automatic control cannot be realized through remote control, and manual operation can ensure that the user can still operate the roller curtain, so as not to fall into the dilemma of being unable to use the roller curtain. Therefore, the electric roller curtain usually has a manual mode structure.

[0003] In the existing design, the clutch device of the electric roller curtain has complex transmission and low integration, therefore, how to provide a convenient and efficient drive with high stability, manual and automatic integration and switching according to needs is a technical problem to be solved in the prior art, and the clutch assembly of the drive motor needs to be improved. UTILITY MODEL CONTENTS

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a clutch assembly of drive motor, comprising: a reduction mechanism, which comprises a gear reduction system and / or a worm gear reduction system;

[0005] A clutch mechanism, comprising a spline sleeve, a driving gear ring and a driven gear ring are sleeved on the spline sleeve, the driving gear ring is in transmission connection with the reduction mechanism and can rotate circumferentially on the spline sleeve, the driven gear ring rotates synchronously with the spline sleeve, and the driven gear ring can slide axially on the spline sleeve under the action of the fork to engage or disengage with the driving gear ring, so as to realize the connection or disconnection of the transmission relationship; the drive motor outputs torque outward through the reduction mechanism and the clutch mechanism in turn.

[0006] Since the clutch assembly adopts the spline sleeve, the driving gear ring, the driven gear ring and the fork structure, a high-stability clutch device is provided. The meshing mode of the spline sleeve and the driven gear ring ensures the stability and reliability of power transmission. The driving gear ring can rotate circumferentially relative to the spline sleeve, and the driven gear ring can slide axially relative to the spline sleeve under the action of the fork, so that the clutch operation is more accurate and reliable.

[0007] During the switching process between the automatic mode and the manual mode, the fork can accurately push the driven gear ring to the corresponding position, realize the engagement and disengagement of the driving gear ring and the driven gear ring, and ensure smooth switching between the two modes. At the same time, the stability of the clutch device is also reflected in its ability to withstand large torque and impact force, ensuring normal operation under various complex working conditions. This not only reduces production costs, but also improves the reliability and stability of the entire driver, reducing maintenance costs and downtime caused by transmission component failures.

[0008] Preferably, the spline sleeve comprises an idle position, and the driving gear ring is sleeved on the idle position and can rotate along the circumference of the spline sleeve.

[0009] Preferably, the spline sleeve comprises a sliding position, and the sliding position is provided with a spline groove, and the driven gear ring is sleeved on the sliding position and the inner teeth of the driven gear ring are engaged with the spline groove of the sliding position.

[0010] Preferably, the fork is arranged adjacent to the driven gear ring, when the fork pushes the driven gear ring to the first position, the driving gear ring and the driven gear ring are engaged, and the transmission relationship is restored; when the fork pushes the driven gear ring to the second position, the driving gear ring and the driven gear ring are disengaged from each other, and the transmission relationship is disconnected.

[0011] Preferably, it further comprises an output worm, and the driving gear ring is fixed at one end of the output worm and faces the driven gear ring, and the torque of the driving motor is transmitted to the clutch mechanism through the output worm.

[0012] Preferably, the outer circumferential surface of the driven gear ring is provided with a ring groove, the fork is provided with a fork push pin, the fork push pin is embedded in the ring groove, when the driven gear ring rotates synchronously with the spline sleeve, the fork push pin does not interfere with the ring groove; when the fork pushes the driven gear ring to move, the fork push pin drives the driven gear ring to move through the side wall of the ring groove.

[0013] Preferably, the bottom side of the rod part of the fork is provided with a rope, under the traction of the rope, the fork can rotate relative to the fork rotating shaft and control the transmission disconnection or restoration of the driven gear ring and the driving gear ring.

[0014] Preferably, the rod part of the fork is provided with a positioning sleeve on the side facing the direction pulled by the rope, and the positioning sleeve is provided with a return spring, after the rope releases the pulling force, the rod part will be restored to rotate under the action of the return spring.

[0015] Preferably, it comprises a first housing and a second housing and a mounting space formed by the two, and the reduction mechanism and the clutch mechanism are both installed in the mounting space, the second housing is provided with a fork housing, and the fork assembly is installed in the fork housing.

[0016] The sliding position of the spline sleeve is provided with a spline groove, and the inner teeth of the driven gear ring are engaged with the spline groove, so that the spline connection mode can ensure the movement accuracy of the driven gear ring on the sliding position, and the driven gear ring can keep an accurate position relationship during the engagement and disengagement with the driving gear ring, thereby ensuring the stability and reliability of the transmission.

[0017] Other beneficial effects of the present application will be described one by one in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a first three-dimensional schematic view of the hand-automatic integrated roller shutter drive of the present application;

[0019] Figure 2 It is a second three-dimensional schematic view of the hand-automatic integrated roller shutter drive of the present application;

[0020] Figure 3 It is an explosion view of the clutch assembly of the driving motor of the present application;

[0021] Figure 4 It is a structural schematic view of the clutch mechanism of the driving motor of the present application;

[0022] Figure 5 It is a first explosion structural schematic view of the clutch mechanism of the present application;

[0023] Figure 6 It is a second explosion structural schematic view of the clutch mechanism of the present application;

[0024] Figure 7 It is a three-dimensional sectional view of the clutch mechanism of the present application;

[0025] Figure 8 It is a comparison view of two states of the clutch mechanism of the present application.

[0026] In the figure: 1 motor; 2 motor mounting shell; 3 first shell; 4 coupling; 4a first spline sleeve, 4b second spline sleeve, 4c third spline sleeve; 5 second shell; 6 yoke shell; 7 first mounting bracket; 8 second mounting bracket; 9 torsional spring; 10 input worm gear; 11 first bearing; 12 worm; 13 second bearing; 14 third bearing; 15 output worm gear; 16 driving gear ring; 17 driven gear ring; 18 spline sleeve; a support position; b idling position; c sliding position; d transmission position; 19 fourth bearing; 20 sealing sleeve; 21 yoke shaft; 21a shaft hole; 22 yoke push pin; 22a pin hole; 22b pin head; 23 tether hole; 23a rope passing gap; 24 positioning sleeve; 25 return spring; 26 positioning flange. DETAILED DESCRIPTION

[0027] The foregoing and other technical content features and effects of the present application will be described in detail below with reference to the accompanying drawings. Figures 1 to 8 The embodiment is described in detail.

[0028] Electric roller shutter product for pickup truck

[0029] The hand-automatic integrated roller shutter driver in the embodiment is suitable for the conventional electric roller shutter product for pickup truck. The electric roller shutter (not shown in the figure) for pickup truck mainly consists of a roller shutter groove, a roller tube, a roller shutter cover, a motor, a driving shaft, a mounting beam, a guide rail, a fixed block assembly, a drainage system and the like. The roller shutter groove is arranged at the front end of the top of the pickup truck rear compartment and is used for accommodating the roller tube. The roller tube can rotate in the roller shutter groove and its outer side is connected with the roller shutter cover.

[0030] In the embodiment, the hand-automatic integrated roller shutter driver is mounted on one side of the roller shutter groove and provides power for the movement of the roller shutter cover. The power of the motor 1 reaches the driving shaft 27 through the speed reduction mechanism and the clutch mechanism, and the driving shaft 27 drives the roller shutter, realizing power transmission. Generally, the torsional spring 9 is sleeved on the driving shaft. The torsional spring provides auxiliary force in the process of winding up and unwinding the roller shutter. When the roller shutter is unwound, the elastic potential energy stored in the torsional spring is converted into kinetic energy, helping the driving shaft to rotate, so that the roller shutter can be more smoothly and quickly lowered. When the roller shutter is wound up, the torsional spring also plays a certain buffering role, avoiding excessive impact force due to gravity or excessive driving force of the motor, and protecting the roller shutter and related components.

[0031] Installation of hand-automatic integrated roller shutter driver

[0032] Figures 1-7A hand self-rolling shutter drive for driving the opening and closing of the rolling shutter cover of a pickup truck is shown in the figure. The hand self-rolling shutter drive includes a first housing 3 and a second housing 5, and a mounting space formed by the two, the mounting space is provided with a reduction mechanism and a clutch mechanism, the second housing 5 is provided with a yoke housing 6, and a yoke assembly is installed in the yoke housing 6. And a sealing sleeve 20 is used to seal the port to prevent water and dust from entering the mounting space and prevent lubricating oil from flowing out of the drive.

[0033] The hand self-rolling shutter drive as a core component includes a motor 1, a reduction mechanism, a drive shaft 27 and a clutch mechanism. The motor 1 provides a power source for the entire system, and the motor output shaft is connected to the reduction mechanism through a shaft element.

[0034] Reduction mechanism

[0035] The reduction mechanism adopts a gear reduction system or a worm gear reduction system, which is a prior art and will not be described in detail. The gear reduction system can be composed of multiple gears meshing with each other, and the worm gear and the worm in the worm gear reduction system can be provided in multiple groups and spaced apart. When the motor 1 starts, the high-speed rotating power of the motor output shaft is gradually reduced and the torque is increased through the gear reduction system or the worm gear reduction system of the reduction mechanism, the torque and the speed are adjusted, and a stable low-speed high-torque power output is provided for subsequent transmission.

[0036] As shown in Figure 3 , in this embodiment, the reduction mechanism includes an input worm 10, a worm 12, and an output worm 15 sleeved on the spline sleeve 18. The two ends of the input worm 10 are supported by the first bearing 11, the two ends of the worm 12 are supported by the second bearing 13, and the output shaft of the motor 1 is coaxially installed with the input worm 10. In this way, the axis of the motor 1 is parallel to the axis of the drive shaft 27, and the installation of the motor can fully utilize the transverse space of the rolling shutter slot, greatly reducing the size of the entire drive.

[0037] As can be seen from Figure 1 and Figure 2 , the two ends of the drive shaft 27 are respectively installed in the first mounting frame 7 and the second mounting frame 8 at the left and right ends of the rolling shutter slot through bearings, and the first mounting frame 7 and the second mounting frame 8 are fixed on the inner wall of the rolling shutter slot in a detachable manner, thereby providing stable support for the drive shaft 27 and ensuring its stability during rotation.

[0038] The drive shaft 27 is a cylindrical metal shaft body, and in this embodiment, its cross section is hexagonal for easy transmission and installation, as shown in Figure 5 , the inner hole of the third spline sleeve 4c fixedly connected with the drive shaft 27 is also hexagonal. One end of the rolling shutter assembly can be fixed on the drive shaft 27, and when the drive shaft 27 rotates, it can directly drive the rolling shutter assembly to realize the winding or unfolding action.

[0039] Clutch mechanism

[0040] The clutch mechanism is the key structure to realize the function of manual and automatic, which is mainly composed of spline sleeve 18, driving gear ring 16, driven gear ring 17, output worm gear 15, fork and other components. The spline sleeve 18 is a hollow cylindrical structure, and its outer wall is divided into support position a, idling position b, sliding position c and transmission position d along the axial direction. The support position a is supported and positioned by the third bearing 14 after being inserted into the positioning flange 26, the driving gear ring 16 is sleeved on the idling position b, and there is no transmission relationship between them. The driving gear ring 16 can rotate flexibly in the circumferential direction relative to the spline sleeve 18 under the driving of the speed reduction transmission, and only rotates in the circumferential direction without sliding relative to the axial direction of the spline sleeve 18. The outer surface of the sliding position c is provided with regularly distributed spline grooves, and the inner ring of the driven gear ring 17 is provided with internal teeth matched with the spline grooves. The driven gear ring 17 is sleeved on the sliding position c, and the synchronous rotation of the driven gear ring 17 and the spline sleeve 18 is realized through the meshing of the internal teeth and the spline grooves.

[0041] At the same time, the spline sleeve 18 is sleeved on the driving shaft 27, and the transmission position d at one end is fixedly connected with the driving shaft 27 through the shaft coupling 4. In this embodiment, the first spline sleeve 4a is used to form the fixation of the transmission position d of the spline sleeve 18 and the inner wall of the shaft coupling 4, and the combination structure of the second spline sleeve 4b and the third spline sleeve 4c is used to form the fixation of the shaft coupling 4 and the driving shaft 27. The second spline sleeve 4b provides a surface matched with the inner wall of the shaft coupling 4, and the third spline sleeve 4c provides an inner hole matched with the hexagonal section of the driving shaft 27. The shaft coupling 4 can also be adopted in other ways, such as radial fastening by screws, threaded sleeve connection, etc., which can also achieve the same purpose of the new type. It is only required that the power of the motor output shaft can be transmitted to the driving shaft 27 through the speed reduction mechanism, the clutch mechanism and the shaft coupling 4 in turn.

[0042] The output worm gear 15 is sleeved on the spline sleeve 18, and is fixed with the driving gear ring 16 through sleeve connection to ensure the synchronous rotation of the two. The worm 12 of the speed reduction mechanism is engaged with the output worm gear 15, so as to transmit the power of the speed reduction mechanism to the driving gear ring 16. The outer periphery of the driven gear ring 17 is provided with an annular groove, and the fork part of the fork is provided with two driving arms. The end of each driving arm is provided with a fork plunger 22, and the two fork plungers 22 are respectively embedded in the annular grooves on both sides of the driven gear ring 17. The rod part of the fork is provided with a fork shaft 21, and the fork is installed on the side wall of the roller shutter groove through the fork shaft 21 and can rotate relative to the fork shaft 21. The rod part of the fork is connected with a rope at the bottom side. When it is required to switch the operation mode, the rope is pulled, the fork rotates around the fork shaft 21, and the fork plunger 22 pushes the driven gear ring 17 to slide axially relative to the spline sleeve 18 through the annular groove.

[0043] From Figure 7It can be seen that in the embodiment, the driving gear ring 16 is sleeved on the end of the output worm gear 15 and fixed, forming a whole transmission gear ring, one end of which is limited by the positioning flange 26, and the other end is limited by the step of the spline sleeve 18, so that the transmission gear ring can only rotate in the circumferential direction relative to the spline sleeve 18 in the idling position b; the driven gear ring 17 can slide between the first position and the second position between the driving gear ring 16 and the fourth bearing 19, on the one hand, it can be reliably moved under the guidance of the spline sleeve 18, on the other hand, it is limited by the front and rear structures, and cannot slide beyond the stroke, so that the clutching action of the driven gear ring 17 is safe and reliable, and the risk of failure is reduced.

[0044] Shifting fork assembly

[0045] From Figure 6 And Figure 7 In terms of structure, the shifting fork is in the shape of "Y" and consists of a rod part, a shaft connecting part and a fork part. The rod part is an elongated rectangular metal strip for receiving external operating force, and the bottom side thereof is provided with a ring-shaped ear rope hole 23, through which the rope is connected with the rod part to form a force point for pulling operation. The rod part is provided with a positioning sleeve 24 on the side facing the direction in which the rope is pulled, and the positioning sleeve 24 is provided with a return spring 25. After the rope releases the pulling force, the rod part will be restored to rotate under the action of the return spring 25.

[0046] A shifting fork shaft 21 is arranged on the shifting fork housing 6 above the rod part or below the driving arm of the fork part at a position close to the middle part, so that the shifting fork can rotate around the shifting fork shaft 21 as the center. The fork part is in the shape of "V" and opens, and two driving arms symmetrically extend from both sides of the shaft connecting part, and the ends of the driving arms are provided with shifting fork push pins 22. The diameter of the pin head 22b of the shifting fork push pin 22 is slightly smaller than the width of the annular groove on the outer periphery of the driven gear ring 17, so as to ensure that it can be embedded in the groove to achieve effective driving, and also will not affect the rotation and sliding of the driven gear ring 17 due to the size being too large. Preferably, a reinforcing rib plate is arranged at the connection between the fork part and the rod part of the shifting fork to enhance the structural strength of the whole shifting fork and prevent deformation or damage in frequent operation. The rod part is provided with a rope passing hole 23a, and the positioning sleeve 24 is also provided with a rope passing hole, so that the rope drawn out of the rope hole 23 can be extended outward through the rope passing hole.

[0047] The movement of the fork is realized based on the principle of lever. When the user pulls the rope connected to the bottom side of the rod, the pulling force generated by the rope acts on the rod, causing the rod to rotate around the fork shaft 21. Since the fork shaft 21 is located between the rod and the fork, the rotation of the rod is transmitted to the fork through the lever action, causing the two drive arms of the fork to swing synchronously. In the swinging process, the fork plunger 22 at the end of the drive arm moves along the annular groove on the outer periphery of the driven gear ring 17, thereby pushing the driven gear ring 17 to slide axially relative to the spline sleeve 18. When it is necessary to switch from automatic mode to manual mode, pulling the rope causes the fork to rotate, and the fork plunger 22 pushes the driven gear ring 17 to slide away from the driving gear ring 16, until the driving gear ring 16 and the driven gear ring 17 are disengaged from each other, cutting off the connection between the motor power and the drive shaft 27, and realizing the switching of the manual mode; conversely, under the action of the reset spring 25, the fork plunger 22 pushes the driven gear ring 17 to slide towards the driving gear ring 16 and is biased to stay in this position, so that the driving gear ring 16 and the driven gear ring 17 are normally engaged, and the drive shaft 27 is driven by the motor power.

[0048] Referring to Figure 7 , 8, when the fork moves the driven gear ring 17 to the first position, the driven gear ring 17 and the driving gear ring 16 are engaged with each other, at this time the power output by the motor 1 is transmitted to the drive shaft 27 through the reduction mechanism, the driving gear ring 16, the driven gear ring 17, the spline sleeve 18 and the shaft coupling 4 in turn, the drive shaft 27 drives the roller blind assembly to rotate, realizing the automatic winding and unwinding of the roller blind, i.e. the automatic mode driven by the motor, which is suitable for the scene of remote operation by the user or rapid opening and closing of the tail box. When the fork moves the driven gear ring 17 to the second position, the driving gear ring 16 and the driven gear ring 17 are disengaged from each other, at this time the drive shaft 27 is disconnected from the motor power transmission, the user can directly manually rotate the drive shaft 27 to drive the roller blind assembly to act, realizing the manual mode of manual driving, which plays a role when the motor fails or the user wants to operate finely, improving the reliability and practicability of the system.

[0049] Usage state description

[0050] The working principle of the pickup tail box cover roller blind automatic and manual drive is based on the coordinated operation of various components, which realizes the switching of automatic mode and manual mode through the fork, and then forms different transmission paths to meet diversified use requirements.

[0051] In the automatic mode, the user issues a rolling shutter winding and unwinding instruction through a remote controller or a control switch, the motor 1 starts to operate, and the motor output shaft outputs high-speed rotating power. The power is first transmitted to the speed reduction mechanism. The gear reduction system in the speed reduction mechanism reduces the speed and increases the torque of the motor power through multiple gears or multiple worm gears, and outputs stable low-speed high-torque power. The power output by the speed reduction mechanism is transmitted to the output worm 15. Since the output worm 15 is fixedly connected with the driving gear ring 16 and rotates synchronously, the driving gear ring 16 also rotates. At this time, the driven gear ring 17 is at the first position, the driving gear ring 16 and the driven gear ring 17 are meshed with each other, and the rotation of the driving gear ring 16 drives the synchronous rotation of the driven gear ring 17. The driven gear ring 17 is meshed with the spline sleeve 18 through the inner teeth and the spline groove of the sliding position c, and the synchronous rotation of the spline sleeve 18 is realized. The spline sleeve 18 is in transmission connection with the drive shaft 27 through the shaft coupling 4, and transmits the power to the drive shaft 27. Under the drive of the drive shaft 27, the rolling shutter assembly starts to rotate, realizes the automatic winding and unwinding of the rolling shutter, and completes the complete transmission path from the motor power input to the rolling shutter action output. It should be noted that when the driven gear ring 17 and the spline sleeve 18 rotate synchronously, the yoke push pin 22 does not interfere with the driven gear ring 17 due to the existence of the annular groove.

[0052] When it is needed to switch to the manual mode, the user pulls the rope connected to the bottom side of the yoke rod. The pulling force of the rope drives the yoke to rotate around the yoke rotating shaft 21. The yoke push pin 22 at the end of the two driving arms of the yoke acts on the side wall of the annular groove on the outer periphery of the driven gear ring 17, and pushes the driven gear ring 17 to slide away from the driving gear ring 16 relative to the spline sleeve 18, until the driving gear ring 16 and the driven gear ring 17 are disengaged from each other. At this time, the connection between the motor power and the drive shaft 27 is cut off, and the user can directly manually rotate the drive shaft 27. Since the drive shaft 27 is installed on the first mounting frame 7 and the second mounting frame 8 in the rolling shutter groove through bearings at both ends, the rotation is smooth, and the manual force applied by the user directly acts on the drive shaft 27, drives the rolling shutter assembly fixed thereon to move, and realizes the manual driving of the rolling shutter winding and unwinding. In the manual mode, the driver is free from the constraint of the motor. In the special situation of motor failure, power failure, etc., the user can still use the rolling shutter normally, which reflects the flexibility and reliability of the design of the driver.

[0053] The pick-up truck tail box cover roller shutter structure of the embodiment realizes free switching of two operation modes of electric and manual through the design of the hand-automatic roller shutter driver, satisfies the diversified use requirements of users, effectively improves the power transmission efficiency and torque output stability through the composite design of the speed reduction mechanism, ensures the reliability and convenience of mode switching through the precise structure cooperation and transmission relationship of each component in the clutch mechanism, and improves the operation stability and service life of the entire roller shutter system through the stable support of the roller shutter groove and mounting frame to the driving shaft and the compensation of the shaft offset by the shaft coupling, thereby providing an efficient, reliable protection and opening and closing solution for the pick-up truck tail box.

[0054] The above is only for the purpose of illustrating the present application, and it should be understood that the present application is not limited to the above embodiments, and various modifications in accordance with the idea of the present application are within the scope of the present application.

Claims

1. A clutch assembly for driving a motor, comprising: a reduction mechanism comprising a gear reduction system and / or a worm reduction system; a clutch mechanism comprising a spline sleeve (18) and a driving gear ring (16) and a driven gear ring (17) sleeved thereon, the driving gear ring being in driving connection with the reduction mechanism and being able to rotate idly in the circumferential direction of the spline sleeve, the driven gear ring being in meshing engagement with the spline sleeve and rotating synchronously, the driven gear ring being able to slide in the axial direction of the spline sleeve under the action of a shift fork to engage or disengage the driving gear ring, so as to realize connection or disconnection of the driving relationship; the motor outputs torque outwardly through the reduction mechanism and the clutch mechanism in turn.

2. The clutching assembly of claim 1, wherein: The spline sleeve (18) comprises an idling position (b), and the driving gear ring is sleeved on the idling position and is able to rotate in the circumferential direction of the spline sleeve.

3. The clutching assembly of claim 1, wherein: The spline sleeve (18) comprises a sliding position (c) provided with a spline groove, and the driven gear ring is sleeved on the sliding position and the inner teeth of the driven gear ring are in meshing engagement with the spline groove of the sliding position.

4. The clutch assembly for driving a motor according to claim 1, characterized in that: The shift fork is arranged adjacent to the driven gear ring, and when the shift fork shifts the driven gear ring to a first position, the driving gear ring (16) and the driven gear ring (17) are in meshing engagement, so as to restore the driving relationship; when the shift fork shifts the driven gear ring to a second position, the driving gear ring and the driven gear ring disengage from each other, so as to disconnect the driving relationship.

5. The clutching assembly of claim 1, wherein: The clutch assembly further comprises an output worm (15), and the driving gear ring (16) is fixed at one end of the output worm and faces the driven gear ring, and the torque of the motor is transmitted to the clutch mechanism through the output worm.

6. The clutching assembly of claim 1, wherein: The outer circumferential surface of the driven gear ring (17) is provided with a ring groove, the shift fork is provided with a shift fork push pin (22), and the shift fork push pin is embedded in the ring groove, and when the driven gear ring rotates synchronously with the spline sleeve, the shift fork push pin does not interfere with the ring groove; when the shift fork pushes the driven gear ring to move, the shift fork push pin drives the driven gear ring to move through the side wall of the ring groove.

7. The clutching assembly of claim 6, wherein: The bottom side of the rod portion of the shift fork is provided with a rope, and under the action of the rope traction, the shift fork is able to rotate relative to the shift fork rotation shaft and control the disconnection or restoration of the driving relationship between the driven gear ring and the driving gear ring.

8. The clutching assembly of claim 7, wherein: The side of the rod portion of the shift fork facing the direction in which the rope is pulled is provided with a positioning sleeve, and the positioning sleeve is provided with a return spring, and after the rope releases the pulling force, the rod portion will be restored to rotate under the action of the return spring.

9. The clutching assembly of claim 1, wherein: The clutch assembly comprises a first housing and a second housing and a mounting space formed by the two, and the reduction mechanism and the clutch mechanism are both mounted in the mounting space, the second housing is provided with a shift fork housing, and the shift fork assembly is mounted in the shift fork housing.

Images