Drive mechanism

Abstract

This application relates to a drive mechanism, including a power unit, a primary reduction unit, a mechanical clutch, a housing, and an output assembly. The primary reduction unit is installed within the housing and includes a worm gear and a worm wheel meshing with the worm gear. The power unit is connected to the worm gear. The mechanical clutch includes a fixed component, a movable component, and a driving component. The fixed component is fixedly installed within the housing. The output assembly is rotatably installed within the housing. The driving component is fixedly installed on the worm wheel. The movable component is capable of moving between the fixed component and the output assembly. This application utilizes a mechanical clutch to replace a traditional electromagnetic clutch, thereby reducing the product's manufacturing cost and installation space, demonstrating strong practicality.

Description

Technical Field

[0001] This application relates to a drive mechanism, specifically a drive mechanism applicable to sliding doors. Background Technology

[0002] Automobiles are an indispensable means of transportation in people's daily lives. With the continuous development of technology, the development of automobiles has become increasingly important, moving towards a more user-friendly direction. Automatic door opening and closing has become a trend in automotive development. Currently, the drive mechanism of automatic sliding doors mainly includes a motor, an electromagnetic clutch, and a worm gear. The electromagnetic clutch is used to engage or disengage the power transmission, allowing manual door operation when necessary. However, electromagnetic clutches are currently not only expensive but also occupy a large installation space, hindering the development of miniaturized drive mechanisms. Summary of the Invention

[0003] To overcome the above-mentioned defects, this application provides a drive mechanism that uses a mechanical clutch. The mechanical clutch has a simple structure, small size, light weight, and low cost. Replacing the traditional electromagnetic clutch with a mechanical clutch can reduce the manufacturing cost of the product and reduce the installation space of the product, which has strong practicality.

[0004] The technical solution adopted by this application to solve its technical problem is:

[0005] A drive mechanism includes a power unit, a primary reduction unit, a mechanical clutch, a housing, and an output assembly. The primary reduction unit is installed within the housing and includes a worm and a worm wheel meshing with the worm. The power unit is connected to the worm. The mechanical clutch includes a fixed member, a movable member, and a drive member. The fixed member is fixedly installed within the housing. The output assembly is rotatably installed within the housing. The drive member is fixedly installed on the worm wheel. The movable member is movable between the fixed member and the output assembly. The drive member can engage the movable member in the output assembly so that the output assembly rotates synchronously when the worm wheel rotates. The fixed member can disengage the movable member from the output assembly, thereby disengaging the output assembly from the worm wheel.

[0006] Optionally, the output component includes a disk body and an output shaft fixedly installed in the disk body. The disk body has a notch, the driving member can engage the movable member into the notch, the fixing member can drive the movable member to disengage from the notch, and a magnetic ring and a Hall chip are sleeved on the output shaft.

[0007] Optionally, the disc body has a disc-shaped structure, a central hole is provided on the disc body, the output shaft is fixedly installed in the central hole, and a plurality of notches are provided along the circumferential direction on the edge of the disc body, the notches having an arc-shaped structure.

[0008] Optionally, the fixing member is a ring-shaped structure and is located outside the output component, and the movable member is a cylindrical structure that can be adsorbed onto the fixing member.

[0009] Optionally, the fixing member is an iron part and the movable part is a magnet; or, the fixing member is a magnet and the movable part is an iron part; or, both the fixing member and the movable part are magnets, and the polarities of the fixing member and the movable part are opposite.

[0010] Optionally, the driving component includes M driving rods connected in sequence, all driving rods forming a cavity, the cross-section of the cavity being a polygonal or star-shaped structure, wherein M≥2 and M is an integer.

[0011] Optionally, the system further includes an execution unit, which includes a pulley, a belt, and a transmission wheel assembly. The transmission wheel assembly includes a plurality of spaced transmission wheels. The pulley is fitted onto the output component, and the belt is fitted onto the pulley and the transmission wheel assembly. A connecting bracket for connecting to the sliding door is also installed on the belt.

[0012] Optionally, the system further includes an execution unit, which includes a first winding wheel and a second winding wheel sleeved on the output component. A first wire rope is wound on the first winding wheel, and a second wire rope is wound on the second winding wheel. The first and second wire ropes are wound in opposite directions. The first and second winding wheels are tensioned by an elastic element. The output component can drive the first and second winding wheels to rotate and cause the first and second wire ropes to be in opposite motion states.

[0013] Optionally, a coupling is fixedly provided on the output component, the first winding wheel and the second winding wheel are sleeved on the coupling, the inner side wall of the first winding wheel is provided with a first rib, the inner side wall of the second winding wheel is provided with a second rib, the outer side wall of the coupling is provided with a third rib, the first winding wheel and the second winding wheel are arranged along the axial direction of the coupling, and the first rib and the second rib are respectively located on both sides of the third rib.

[0014] Optionally, it also includes a secondary reduction unit, which is mounted on the output component. The secondary reduction unit includes a cycloidal pinwheel reducer, a planetary gear reducer, or a low-tooth-difference reduction assembly.

[0015] The beneficial effects of this application are as follows: This application includes a power unit, a primary reduction unit, a mechanical clutch, and an output component. The power unit is connected to the primary reduction unit. The primary reduction unit can act on the output component through the mechanical clutch to drive the output component to operate synchronously. The mechanical clutch can also disengage from the output component, thereby disengaging the primary reduction unit from the output component. At this time, external force can easily drive the output component. Therefore, when the output component is connected to a sliding door, the user can manually drive the sliding door with very little force. This application uses a mechanical clutch to replace the traditional electromagnetic clutch. The mechanical clutch has a simple structure, small size, light weight, and low processing cost. It can be installed inside the housing, thus reducing the installation space of the drive structure, simplifying the installation process, and greatly reducing the product cost, making it highly practical. Attached Figure Description

[0016] Figure 1 This is one of the structural schematic diagrams of the drive mechanism in Embodiment 1 of this application;

[0017] Figure 2 This is a second schematic diagram of the drive mechanism in Embodiment 1 of this application;

[0018] Figure 3 This is the third schematic diagram of the drive mechanism in Embodiment 1 of this application;

[0019] Figure 4 This is the fourth schematic diagram of the drive mechanism in Embodiment 1 of this application;

[0020] Figure 5 This is the fifth schematic diagram of the drive mechanism in Embodiment 1 of this application;

[0021] Figure 6 for Figure 5 A cross-sectional view along point AA in one state;

[0022] Figure 7 for Figure 5 A cross-sectional view along AA in another configuration;

[0023] Figure 8 This is the sixth schematic diagram of the drive mechanism in Embodiment 1 of this application;

[0024] Figure 9 for Figure 8 Sectional view at the middle edge BB;

[0025] Figure 10 This is one of the structural schematic diagrams of the drive mechanism in Embodiment 2 of this application;

[0026] Figure 11 This is a second schematic diagram of the drive mechanism in Embodiment 2 of this application;

[0027] Figure 12 for Figure 11 A cross-sectional view along CC in one state;

[0028] Figure 13 for Figure 11 A cross-sectional view along CC in another configuration;

[0029] Figure 14 This is a schematic diagram of the drive mechanism in Embodiment 3 of this application;

[0030] Figure 15 for Figure 14 Enlarged view at point D;

[0031] Figure 16 This is one of the structural schematic diagrams of the drive mechanism in Embodiment 4 of this application;

[0032] Figure 17 This is the second schematic diagram of the drive mechanism in Embodiment 4 of this application;

[0033] Figure 18 This is the third schematic diagram of the drive mechanism in Embodiment 4 of this application;

[0034] Figure 19 This is the fourth schematic diagram of the drive mechanism in Embodiment 4 of this application;

[0035] Figure 20 This is the fifth schematic diagram of the drive mechanism in Embodiment 4 of this application;

[0036] Figure 21 for Figure 20 Sectional view at the center of EE;

[0037] Figure 22 This is the sixth schematic diagram of the drive mechanism in Embodiment 4 of this application;

[0038] Figure 23 for Figure 22 Sectional view at the center FF;

[0039] Figure 24 This is one of the structural schematic diagrams of the drive mechanism in Embodiment 5 of this application;

[0040] Figure 25 This is a second schematic diagram of the drive mechanism in Embodiment 5 of this application;

[0041] Figure 26 This is the third schematic diagram of the drive mechanism in Embodiment 5 of this application;

[0042] Figure 27 This is the fourth schematic diagram of the drive mechanism in Embodiment 5 of this application;

[0043] Figure 28 This is the fifth schematic diagram of the drive mechanism in Embodiment 5 of this application;

[0044] Figure 29 This is the sixth schematic diagram of the drive mechanism in Embodiment 5 of this application;

[0045] Figure 30 for Figure 29 Cross-sectional view at point GG;

[0046] Figure 31 This is the fifth schematic diagram of the drive mechanism in Embodiment 5 of this application;

[0047] Figure 32 for Figure 31 Cross-sectional view at point HH;

[0048] Figure 33 This is one of the structural schematic diagrams of the drive mechanism in Embodiment 6 of this application;

[0049] Figure 34 This is a second schematic diagram of the drive mechanism in Embodiment 6 of this application;

[0050] Figure 35 This is the third schematic diagram of the drive mechanism in Embodiment 6 of this application;

[0051] Figure 36 This is the fourth structural schematic diagram of the drive mechanism in Embodiment 6 of this application;

[0052] Figure 37 This is the fifth structural schematic diagram of the drive mechanism in Embodiment 6 of this application;

[0053] Figure 38 This is the sixth schematic diagram of the drive mechanism in Embodiment 6 of this application;

[0054] Figure 39 for Figure 38 Sectional view at the midline MM;

[0055] Figure 40 This is the fifth structural schematic diagram of the drive mechanism in Embodiment 6 of this application;

[0056] Figure 41 for Figure 40 Cross-sectional view at point NN;

[0057] In the diagram: 10-Power unit, 11-Motor, 20-First stage reduction unit, 21-Worm, 22-Worm wheel, 30-Mechanical clutch, 31-Fixed component, 32-Moving component, 33-Drive component, 40-Housing, 41-Magnetic ring, 42-Hall chip, 50-Output assembly, 51-Output shaft, 52-Disc, 53-Notch, 61-Pulley, 62-Belt, 63-Transmission wheel, 71-First winding wheel, 72-First wire rope, 73-First rib, 74-Second winding wheel, 75-Second wire rope, 76-Second rib, 77-Coupling, 78-Third rib, 79-Elastic component, 81-Cycloidal pinwheel reducer, 82-Planetary gear reducer. Detailed Implementation

[0058] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0059] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0061] Example 1: As Figure 1-9As shown, a drive mechanism includes a power unit 10, a first-stage reduction unit 20, a mechanical clutch 30, a housing 40, and an output assembly 50. The first-stage reduction unit 20 is installed inside the housing 40 and includes a worm 21 and a worm wheel 22 meshing with the worm 21. The power unit 10 is connected to the worm 21. The mechanical clutch 30 includes a fixed member 31, a movable member 32, and a drive member 33. The fixed member 31 is fixedly installed inside the housing 40. The output assembly 50 is rotatably installed inside the housing 40. The drive member 33 is fixedly installed on the worm wheel 22. The movable member 32 can move between the fixed member 31 and the output assembly 50. The drive member 33 can engage the movable member 32 in the output assembly 50 so that when the worm wheel 22 rotates, it drives the output assembly 50 to rotate synchronously. The fixed member 31 can disengage the movable member 32 from the output assembly 50, thereby disengaging the output assembly 50 from the worm wheel 22. In this disengaged state, an external force acts on the output component 50, causing it to rotate, while the worm gear 22 remains stationary. Therefore, the external force does not need to overcome the resistance within the first-stage reduction unit and the power unit. In one possible implementation, the power unit 10 is a motor 11, with the motor 11's drive shaft connected to the worm gear 21. When the power unit 10 is running, it drives the worm gear 21 to rotate, which in turn drives the worm wheel 22 to rotate. The worm wheel 22 drives the movable part 32 to move, causing it to engage with the output component 50. The worm wheel then drives the output component 50 to move. In one possible application scenario, the output component 50 is connected to a sliding door, meaning the output component 50 drives the sliding door to slide. In this scenario, the power unit 10 drives the sliding door to open or close via the first-stage reduction unit 20, the mechanical clutch 30, and the output component 50. When the power unit 10 stops running, the movable part 32 disengages from the output component 50 under the action of the fixed part 31, and the output component 50 disengages from the first-stage reduction unit 20. At this point, external force can easily drive the output component 50, allowing the user to manually drive the sliding door with minimal effort. This application utilizes a mechanical clutch to replace the traditional electromagnetic clutch. The mechanical clutch has a simple structure, small size, light weight, and low processing cost. It can be installed inside the housing, thus reducing the installation space of the drive structure, simplifying the installation process, and significantly reducing product costs, making it highly practical.

[0062] like Figure 6 and Figure 7 As shown, the output component 50 includes a disk body 52 and an output shaft 51 fixedly installed within the disk body 52. ​​The disk body 52 has a notch 53. The driving member 33 can engage the movable member 32 into the notch 53, and the fixing member 31 can drive the movable member 32 out of the notch 53. Figure 9As shown, a magnetic ring 41 and a Hall chip 42 are fitted on the output shaft 51. The magnetic ring 41 operates synchronously with the output shaft 51. The Hall chip 42 is mounted on the circuit board. The magnetic ring 41 and the Hall chip 42 are used to monitor the operation of the output shaft 51. Figure 6 The movable part 32 is engaged in the notch 53. At this time, the output component 50 rotates as the worm gear 22 rotates. Figure 7 The movable part 32 is disengaged from the notch 53. At this time, the output component 50 can rotate freely.

[0063] The disc body 52 has a disc-shaped structure and a central hole. The output shaft 51 is fixedly installed in the central hole. The edge of the disc body 52 has a plurality of notches 53 along its circumferential direction. The notches 53 are arc-shaped. The plurality of notches 53 are connected and arranged along the edge of the disc body 52, and the size of the notches is equal, the distance between two adjacent notches is equal, and the number of notches 53 is greater than or equal to the number of moving parts 32.

[0064] like Figure 6 and Figure 7 As shown, the fixing member 31 has a ring-shaped structure and is located on the outer side of the output component 50, that is, on the outer periphery of the disk body 52; the movable member 32 has a cylindrical structure and can be adsorbed onto the fixing member 31, that is, the fixing member 31 uses adsorption force to pull the movable member 32 out from the notch 53. The number of movable members 32 is not limited, and optionally, there are 2, 3, 4 or 6 movable members 32.

[0065] In one possible implementation, the fixing member 31 is an iron part, and the movable member 32 is a magnet; that is, when the worm gear 22 is not rotating, the fixing member 31 can completely attract the movable member 32 onto the fixing member 31, and the movable member 32 moves a certain distance toward the outside of the notch 53 and leaves the notch 53; or, in another possible implementation, the fixing member 31 is a magnet, and the movable member 32 is an iron part; or, in yet another possible implementation, both the fixing member 31 and the movable member 32 are magnets, and the polarities of the fixing member 31 and the movable member 32 are opposite.

[0066] The driving component 33 includes M sequentially connected driving rods, all of which form a cavity. The cross-section of the cavity is polygonal or star-shaped, where M ≥ 2 and M is an integer. In embodiment 1, the cross-section of the cavity is square. In this embodiment, four moving parts 32 are provided. When the worm gear 22 rotates, as... Figure 6As shown, each drive rod can drive a movable component 32 to run into the notch 53 of the disc body 52, and the drive rod presses the movable component 32 so that the disc body 52 rotates synchronously with the worm gear 22. When the worm gear 22 stops running, the external force pushes the output component 50 to run, the disc body 52 rotates, and the movable component 32 rotates a certain angle. Then, under the attraction of the fixed component 31, the movable component 32 moves outward and disengages from the notch. Figure 7 As shown, the movable part 32 is located at the angle between two adjacent drive rods, thereby disengaging the output assembly 50 from the worm gear 22. This allows the output assembly to rotate under external force without overcoming the resistance of the worm gear and power unit. Of course, in other embodiments, the cross-section of the cavity can be a polygonal structure such as a quadrilateral or hexagon.

[0067] Example 2: As Figure 10-13 As shown, the difference between this embodiment and Embodiment 1 is that the cross-section of the cavity is hexagonal, and this embodiment has six movable parts 32, as shown. Figure 12 As shown, all the moving parts 32 are located in the notches 53 of the disc body 52. ​​The drive rod presses against the moving parts 32 so that the disc body 52 rotates synchronously with the worm gear 22. Figure 13 As shown, the movable part 32 is attached to the fixed part 31, and all the movable parts 32 are disengaged from the notch 53 and located at the angle between two adjacent drive rods, thereby disengaging the output assembly 50 from the worm gear 22.

[0068] Example 3: As Figure 14-15 As shown, the drive mechanism also includes an execution unit, which includes a pulley 61, a belt 62, and a transmission wheel assembly. The transmission wheel assembly includes several spaced transmission wheels 63. The pulley 61 is fitted onto the output assembly 50, i.e., the pulley 61 is fitted onto the output shaft 51. The belt 62 is fitted onto the pulley 61 and the transmission wheel assembly, and a connecting bracket for connecting to the sliding door is also installed on the belt. The motor 11 drives the worm gear 12 to rotate, the worm gear 12 drives the worm wheel 13 to rotate, the worm wheel drives the pulley 61 to rotate, and the pulley drives the sliding door to slide back and forth via the belt 62. When the execution unit is a pulley and a belt, the motor, worm wheel, and pulley are all installed on the car's middle door pedal.

[0069] Example 4: Figure 16-23As shown, the drive mechanism also includes an execution unit, which includes a first winding wheel 71 and a second winding wheel 74 sleeved on the output component 50 (i.e., both the first winding wheel 71 and the second winding wheel 74 are sleeved on the coupling 77; a first steel wire rope 72 is wound on the first winding wheel 71, and a second steel wire rope 75 is wound on the second winding wheel 74; the winding directions of the first steel wire rope 72 and the second steel wire rope 75 are opposite; the first winding wheel 71 and the second winding wheel 74 are tensioned by an elastic element 79; the output component 50 can drive the first winding wheel 71 and the second winding wheel 74 to rotate and cause the first steel wire rope 72 and the second steel wire rope 75 to be in opposite motion states). The phrase "the first steel wire rope 72 and the second steel wire rope 75 are in opposite motion states" means that when the output component 50 drives the first winding wheel 71 and the second winding wheel 74 to rotate in the first direction, the output component 50 causes the first winding wheel 71 to rotate, and the first steel wire rope 72 is wound onto the first winding wheel. On wheel 71, the second winding pulley 74 passively rotates under the action of the first winding pulley and the elastic element, and the second wire rope 75 is unwound from the second winding pulley 74. When the output assembly 50 drives the first winding pulley 71 and the second winding pulley 74 to rotate in the second direction, the first wire rope 72 is unwound from the first winding pulley 71, and the second wire rope 75 is wound onto the second winding pulley 74. The first and second directions are opposite. In short, during operation, one of the first and second wire ropes is always in the winding position. One is in a wound state, and the other is in an unwound state, which drives the sliding door of the car to move back and forth to open or close. In application, the first end of the first wire rope 72 is fixed to the first winding wheel 71, and the second end of the first wire rope is connected to the connecting frame on the sliding door of the car. The first end of the second wire rope 75 is fixed to the second winding wheel 74, and the second end of the second wire rope is connected to the connecting frame on the sliding door of the car. Thus, the first wire rope 72 and the second wire rope 75 are used to drive the opening and closing of the sliding door.

[0070] like Figure 16-17As shown, a coupling 77 is fixedly provided on the output assembly 50. In one possible embodiment, the inner sidewall of the coupling 77 is provided with a spline groove. A spline shaft is fixedly sleeved on the output shaft 51 in the output assembly 50. The coupling 77 is fixedly sleeved on the spline shaft through the spline groove to fix the coupling 77 to the output shaft 51. The first winding wheel 71 and the second winding wheel 74 are sleeved on the coupling 77. The inner sidewall of the first winding wheel 71 is provided with a first rib 73, the inner sidewall of the second winding wheel 74 is provided with a second rib 76, and the outer sidewall of the coupling 77 is provided with a third rib 78. The first winding wheel 71 and the second winding wheel 74 are arranged along the axial direction of the coupling 77, and the first rib 73 and the second rib 76 are respectively located on both sides of the third rib 78. For ease of description, the winding wheel closer to the worm gear is defined as the first winding wheel 71, and the winding wheel on the outside is defined as the second winding wheel 74. The two winding wheels are mounted on the same coupling 77, resulting in a compact structure. The coupling and the winding wheels achieve synchronous operation through interfering ribs. The elastic element 79 can be a spring, with the first end fixed inside the first winding wheel 71 and the second end fixed inside the second winding wheel 74. During operation, the spring applies force to the first and second winding wheels to keep the first and second wire ropes always under tension. Compared with the traditional method of winding two wire ropes in opposite directions on one winding wheel, this application omits an additional tensioning mechanism, thus making the structure simpler, more compact, and lower in manufacturing cost. Moreover, the high tension of the wire ropes ensures the high-quality operation of the car sliding door.

[0071] In one implementation, such as Figure 18 As shown, the outer wall of the coupling 77 is provided with three third ribs 78 along the circumferential direction. Correspondingly, the inner wall of the first winding wheel 71 is provided with three first ribs 73 along the circumferential direction, and the inner wall of the second winding wheel 74 is provided with three second ribs 76 along the circumferential direction. The first ribs 73, second ribs 76, and third ribs 78 correspond one-to-one. In one possible embodiment, when the coupling 77 rotates clockwise, it drives the second winding wheel to rotate, that is, the second winding wheel is the driving wheel to perform the winding action. The second wire rope pulls out the first wire rope through the door, and the first winding wheel passively rotates synchronously under the action of the first wire rope. By utilizing the interaction between the ribs, one coupling can drive two winding wheels to rotate, and the distribution of the three ribs limits the position of the winding wheels, so that the winding wheels are always in a proper tension state.

[0072] The drive mechanism further includes a secondary reduction unit, which is mounted on the output component 50. Example 5: Figure 24-32As shown, the secondary reduction unit includes a cycloidal pinwheel reducer 81. In this embodiment, an eccentric hole is provided on the output shaft 51, and the cycloidal pinwheel reducer 81 is installed in the eccentric hole through an eccentric shaft and connected to the output shaft 51.

[0073] Example 6: As Figure 33-41 As shown, the secondary reduction unit is a planetary gear reducer 82. In this embodiment, the planetary gear reducer 82 is fixedly installed on the output shaft 51.

[0074] Example 7: The secondary reduction unit is a low-tooth-difference reduction assembly. In this example, the low-tooth-difference reduction assembly is fixedly installed on the output shaft 51. In Examples 5-7, two-stage reduction is achieved using a primary reduction unit and a secondary reduction unit. Therefore, the drive mechanism can output a large torque and achieve a relatively high reduction ratio, which can be applied to applications such as car doors and seats. Among them, the cycloidal pinwheel reducer 81, the planetary gear reducer 82, and the low-tooth-difference reduction assembly are all existing technologies in the field, and their internal structures will not be described in detail here.

[0075] It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application shall be determined by the appended claims.

Claims

1. A driving mechanism, characterized in that: The system includes a power unit (10), a first-stage reduction unit (20), a mechanical clutch (30), a housing (40), and an output assembly (50). The output assembly (50) is connected to the sliding door. The first-stage reduction unit (20) is installed inside the housing (40). The first-stage reduction unit (20) includes a worm (21) and a worm wheel (22) meshing with the worm (21). The power unit (10) is connected to the worm (21). The mechanical clutch (30) includes a fixed component (31), a movable component (32), and a driving component (33). The fixed component (31) is fixedly installed in the housing (40). Inside, the output component (50) is rotatably mounted inside the housing (40), the drive member (33) is fixedly mounted on the worm gear (22), the movable member (32) is able to move between the fixed member (31) and the output component (50), the drive member (33) can make the movable member (32) engage in the output component (50) so that when the worm gear (22) rotates, it drives the output component (50) to rotate synchronously, the fixed member (31) can make the movable member (32) disengage from the output component (50), thereby making the output component (50) disengage from the worm gear (22); The output component (50) includes a disk body (52) and an output shaft (51) fixedly installed inside the disk body (52). The disk body (52) has a notch (53). The driving member (33) can drive the movable member (32) into the notch (53). The fixing member (31) can drive the movable member (32) to disengage from the notch (53). A magnetic ring (41) and a Hall chip (42) are sleeved on the output shaft (51). The driving component (33) includes M driving rods connected in sequence, all driving rods forming a cavity, the cross-section of the cavity being a polygonal or star-shaped structure, wherein M≥2 and M is an integer; when the movable component (32) is located at the angle between two adjacent driving rods, the output component (50) disengages from the worm gear (22); The disc body (52) has a disc-shaped structure, and a central hole is provided on the disc body (52). The output shaft (51) is fixedly installed in the central hole. The edge of the disc body (52) has a plurality of notches (53) along the circumferential direction. The notches (53) have an arc-shaped structure. The fixing member (31) has a ring-shaped structure and is located on the outside of the output component (50). The movable member (32) has a cylindrical structure and can be adsorbed onto the fixing member (31).

2. The driving mechanism according to claim 1, characterized in that: The fixing member (31) is an iron part and the movable member (32) is a magnet; or, the fixing member (31) is a magnet and the movable member (32) is an iron part; or, both the fixing member (31) and the movable member (32) are magnets, and the polarities of the fixing member (31) and the movable member (32) are opposite.

3. The drive mechanism according to any one of claims 1-2, characterized in that: It also includes an execution unit, which includes a pulley (61), a belt (62) and a transmission wheel set. The transmission wheel set includes a plurality of transmission wheels (63) arranged at intervals. The pulley (61) is sleeved on the output component (50). The belt (62) is sleeved on the pulley (61) and the transmission wheel set, and a connecting bracket connected to the sliding door is also installed on the belt.

4. The drive mechanism according to any one of claims 1-2, characterized in that: It also includes an execution unit, which includes a first winding wheel (71) and a second winding wheel (74) sleeved on the output component (50). A first wire rope (72) is wound on the first winding wheel (71), and a second wire rope (75) is wound on the second winding wheel (74). The first wire rope (72) and the second wire rope (75) are wound in opposite directions. The first winding wheel (71) and the second winding wheel (74) are tensioned by an elastic element (79). The output component (50) can drive the first winding wheel (71) and the second winding wheel (74) to rotate and put the first wire rope (72) and the second wire rope (75) in opposite motion states.

5. The driving mechanism according to claim 4, characterized in that: A coupling (77) is fixedly provided on the output component (50). The first winding wheel (71) and the second winding wheel (74) are sleeved on the coupling (77). The inner sidewall of the first winding wheel (71) is provided with a first rib (73), the inner sidewall of the second winding wheel (74) is provided with a second rib (76), and the outer sidewall of the coupling (77) is provided with a third rib (78). The first winding wheel (71) and the second winding wheel (74) are arranged along the axial direction of the coupling (77), and the first rib (73) and the second rib (76) are respectively located on both sides of the third rib (78).

6. The drive mechanism according to any one of claims 1-2, characterized in that: It also includes a secondary reduction unit, which is installed on the output component (50). The secondary reduction unit includes a cycloidal pinwheel reducer (81), a planetary gear reducer (82), or a low-tooth-difference reduction component.

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