CN117006221A

CN117006221A - Driving mechanism

Info

Publication number: CN117006221A
Application number: CN202310818082.XA
Authority: CN
Inventors: 潘忠利; 付仕瑞; 路文忠
Original assignee: Wuxi Krapelong Automotive Technology Co ltd
Current assignee: Wuxi Krapelong Automotive Technology Co ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2023-11-07

Abstract

The application relates to a driving mechanism which comprises a power unit, a primary speed reduction unit, a mechanical clutch, a shell and an output assembly, wherein the primary speed reduction unit is installed in the shell, the primary speed reduction unit comprises a worm and a worm wheel meshed with the worm, the power unit is connected with the worm, the mechanical clutch comprises a fixing piece, a movable piece and a driving piece, the fixing piece is fixedly installed in the shell, the output assembly is rotatably installed in the shell, the driving piece is fixedly installed on the worm wheel, and the movable piece can move between the fixing piece and the output assembly. The application uses the mechanical clutch to replace the traditional electromagnetic clutch, thereby reducing the manufacturing cost of the product and reducing the installation space of the product, and having strong practicability.

Description

Driving mechanism

Technical Field

The application relates to a driving mechanism, in particular to a driving mechanism applicable to a sliding door.

Background

Automobiles are an indispensable transportation means in people's daily lives. Along with the continuous development of technology, the development of automobiles is also becoming important, and the automobile is going to be developed in a more humanized direction, so that the automobile has a trend of automatically opening and closing the automobile door. The driving mechanism of the automatic sliding door of the existing automobile mainly comprises a motor, an electromagnetic clutch and a worm gear, wherein the electromagnetic clutch is used for connecting or disconnecting the traditional power, so that the door body can be manually driven when necessary. However, the current electromagnetic clutch is expensive, occupies a large installation space and is unfavorable for the development of a miniaturized driving mechanism.

Disclosure of Invention

In order to overcome the defects, the application provides the driving mechanism which adopts the mechanical clutch, the mechanical clutch has simple structure, small volume, light weight and low cost, and the mechanical clutch is utilized to replace the traditional electromagnetic clutch, so that the manufacturing cost of the product can be reduced, the installation space of the product can be reduced, and the driving mechanism has strong practicability.

The technical scheme adopted by the application for solving the technical problems is as follows:

the utility model provides a actuating mechanism, includes power pack, one-level speed reduction unit, mechanical clutch, casing and output subassembly, one-level speed reduction unit install in the casing, one-level speed reduction unit include the worm and with worm wheel of worm meshing, power pack connect in the worm, mechanical clutch includes mounting, moving part and driving piece, mounting fixed mounting in the casing, output subassembly rotationally install in the casing, driving piece fixed mounting in on the worm wheel, the moving part can move between mounting and the output subassembly, the driving piece can make the moving part block in the output subassembly to drive when making the worm wheel rotate output subassembly synchronous rotation, the mounting can make the moving part break away from the output subassembly, and then make output subassembly with the worm wheel breaks away from.

Optionally, the output subassembly includes the disk body and fixed mounting in the internal output shaft of disk, be equipped with the breach on the disk body, the driving piece can be taken the moving part card goes into the breach, the mounting can drive the moving part breaks away from the breach, cover establishes magnetic ring and hall chip on the output shaft.

Optionally, the disk body is discoid structure, be equipped with the centre bore on the disk body, output shaft fixed mounting in the centre bore, the border of disk body is equipped with a plurality of along the circumference the breach, the breach is arc structure.

Optionally, the mounting is annular structure, just the mounting is located output subassembly's outside, the moving part is the cylinder structure, the moving part can adsorb on the mounting.

Optionally, the fixing piece is an iron piece, and the movable piece is a magnet; or the fixed part is a magnet, and the movable part is an iron part; or the fixed piece and the movable piece are both magnets, and the polarities of the fixed piece and the movable piece are opposite.

Optionally, the driving piece includes M actuating levers that link to each other in proper order, and all actuating levers enclose into the cavity, the transversal polygonal structure or the star structure of personally submitting of cavity, wherein, M is more than or equal to 2, and M is the integer.

Optionally, the device further comprises an execution unit, the execution unit comprises a belt pulley, a belt and a transmission wheel set, the transmission wheel set comprises a plurality of transmission wheels which are arranged at intervals, the belt pulley is sleeved on the output assembly, the belt is sleeved on the belt pulley and the transmission wheel set, and a connecting bracket connected with the sliding door is further arranged on the belt.

Optionally, the device further comprises an execution unit, the execution unit comprises a first reel and a second reel which are sleeved on the output assembly, a first steel wire rope is wound on the first reel, a second steel wire rope is wound on the second reel, the winding directions of the first steel wire rope and the second steel wire rope are opposite, the first reel and the second reel are tensioned through an elastic piece, and the output assembly can drive the first reel and the second reel to rotate and enable the first steel wire rope and the second steel wire rope to be in opposite movement states.

Optionally, the output assembly is last to be fixed to be equipped with the shaft coupling, first reel with the second reel cover is equipped with on the shaft coupling, the inside wall of first reel is equipped with first protruding muscle, the inside wall of second reel is equipped with the second protruding muscle, the lateral wall of shaft coupling is equipped with the third protruding muscle, first reel and second reel are followed the axial direction of shaft coupling arranges, just first protruding muscle with the second protruding muscle is located respectively the both sides of third protruding muscle.

Optionally, the device further comprises a secondary speed reduction unit, wherein the secondary speed reduction unit is installed on the output assembly and comprises a cycloidal pin gear speed reducer, a planetary gear speed reducer or a small tooth difference speed reduction assembly.

The beneficial effects of the application are as follows: the application comprises a power unit, a first-stage speed reducing unit, a mechanical clutch and an output assembly, wherein the power unit is connected with the first-stage speed reducing unit, the first-stage speed reducing unit can act on the output assembly through the mechanical clutch so as to drive the output assembly to synchronously operate, and the mechanical clutch can be separated from the output assembly, so that the first-stage speed reducing unit is separated from the output assembly, and at the moment, the output assembly can be easily driven by external force, therefore, when the output assembly is connected with a sliding door, a user can manually drive the sliding door by using small force. The application replaces the traditional electromagnetic clutch with the mechanical clutch, and the mechanical clutch has simple structure, small volume, light weight and low processing cost, and can be arranged in the shell, thus reducing the installation space of the driving structure, simplifying the installation process, greatly reducing the cost of products and having very strong practicability.

Drawings

FIG. 1 is a schematic diagram of a driving mechanism in embodiment 1 of the present application;

FIG. 2 is a second schematic diagram of the driving mechanism in embodiment 1 of the present application;

FIG. 3 is a third schematic diagram of the driving mechanism according to the embodiment 1 of the present application;

FIG. 4 is a schematic diagram of a driving mechanism according to an embodiment 1 of the present application;

FIG. 5 is a schematic diagram of a driving mechanism in embodiment 1 of the present application;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5 in one state;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 5 in another state;

FIG. 8 is a diagram showing a driving mechanism according to an embodiment 1 of the present application;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8;

FIG. 10 is a schematic diagram of a driving mechanism in embodiment 2 of the present application;

FIG. 11 is a second schematic diagram of the driving mechanism in embodiment 2 of the present application;

FIG. 12 is a cross-sectional view taken along line C-C of FIG. 11 in one state;

FIG. 13 is a cross-sectional view taken along line C-C of FIG. 11 in another state;

fig. 14 is a schematic structural view of a driving mechanism in embodiment 3 of the present application;

fig. 15 is an enlarged view of D in fig. 14;

FIG. 16 is a schematic diagram showing a driving mechanism according to embodiment 4 of the present application;

FIG. 17 is a second schematic diagram of the driving mechanism in embodiment 4 of the present application;

FIG. 18 is a third schematic diagram of the driving mechanism in embodiment 4 of the present application;

FIG. 19 is a diagram showing a driving mechanism in accordance with an embodiment 4 of the present application;

FIG. 20 is a fifth schematic diagram of the driving mechanism in embodiment 4 of the present application;

FIG. 21 is a cross-sectional view taken along E-E in FIG. 20;

FIG. 22 is a diagram showing a driving mechanism according to embodiment 4 of the present application;

FIG. 23 is a cross-sectional view taken along line F-F in FIG. 22;

FIG. 24 is a schematic diagram showing a driving mechanism according to embodiment 5 of the present application;

FIG. 25 is a second schematic diagram of the driving mechanism in embodiment 5 of the present application;

FIG. 26 is a third schematic diagram of the driving mechanism in embodiment 5 of the present application;

FIG. 27 is a diagram showing a driving mechanism in embodiment 5 of the present application;

FIG. 28 is a fifth schematic diagram of the driving mechanism in embodiment 5 of the present application;

FIG. 29 is a diagram showing a driving mechanism according to an embodiment 5 of the present application;

FIG. 30 is a cross-sectional view taken along G-G in FIG. 29;

FIG. 31 is a fifth schematic diagram of the driving mechanism in embodiment 5 of the present application;

FIG. 32 is a cross-sectional view taken along H-H in FIG. 31;

FIG. 33 is a schematic diagram showing a driving mechanism according to embodiment 6 of the present application;

FIG. 34 is a second schematic diagram of the driving mechanism in embodiment 6 of the present application;

FIG. 35 is a third schematic diagram of the driving mechanism in the embodiment 6 of the present application;

FIG. 36 is a diagram showing a driving mechanism according to an embodiment 6 of the present application;

FIG. 37 is a fifth schematic view of the driving mechanism in embodiment 6 of the present application;

FIG. 38 is a diagram showing a driving mechanism according to an embodiment 6 of the present application;

FIG. 39 is a cross-sectional view taken along line M-M in FIG. 38;

FIG. 40 is a fifth schematic diagram of the driving mechanism in embodiment 6 of the present application;

FIG. 41 is a cross-sectional view taken along line N-N of FIG. 40;

in the figure: the device comprises a power unit, a motor, a 20-first-stage speed reduction unit, a 21-worm, a 22-worm wheel, a 30-mechanical clutch, a 31-fixed part, a 32-movable part, a 33-driving part, a 40-shell, a 41-magnetic ring, a 42-Hall chip, a 50-output component, a 51-output shaft, a 52-disc, a 53-notch, a 61-belt pulley, a 62-belt, a 63-driving wheel, a 71-first winding wheel, a 72-first steel wire rope, a 73-first rib, a 74-second winding wheel, a 75-second steel wire rope, a 76-second rib, a 77-coupling, a 78-third rib, a 79-elastic part, a 81-cycloidal pin gear reducer and a 82-planetary gear reducer.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the following figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be capable of being practiced otherwise than as specifically shown or described. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Example 1: as shown in fig. 1-9, a driving mechanism includes a power unit 10, a primary reduction unit 20, a mechanical clutch 30, a housing 40 and an output assembly 50, wherein the primary reduction unit 20 is installed in the housing 40, the primary reduction unit 20 includes a worm 21 and a worm wheel 22 meshed 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 driving member 33, the fixed member 31 is fixedly installed in the housing 40, the output assembly 50 is rotatably installed in the housing 40, the driving 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 driving member 33 can enable the movable member 32 to be clamped in the output assembly 50 so as to enable the output assembly 50 to be driven to rotate synchronously when the worm wheel 22 rotates, and the fixed member 31 can enable the movable member 32 to be separated from the output assembly 50 so as to enable the output assembly 50 to be separated from the worm wheel 22. In this disengaged state, an external force acts on the output assembly 50 and causes the output assembly 50 to rotate, while the worm gear 22 remains stationary, so the external force does not overcome the resistance in the primary reduction unit and the power unit. In one possible embodiment, the power unit 10 is a motor 11, and the power shaft of the motor 11 is connected to a worm 21. When the power unit 10 operates, the power unit 10 drives the worm 21 to rotate, the worm 21 drives the worm wheel 22 to rotate, the worm wheel 22 drives the movable piece 32 to move so that the movable piece is clamped on the output assembly 50, and then the worm wheel drives the output assembly 50 to move, in one possible application scenario, the output assembly 50 is connected with the sliding door, that is, the output assembly 50 drives the sliding door to slide, and in the application scenario, the power unit 10 drives the sliding door to open or close through the primary speed reduction unit 20, the mechanical clutch 30 and the output assembly 50; when the power unit 10 stops operating, the movable member 32 is separated from the output assembly 50 by the fixed member 31, and the output assembly 50 is separated from the primary reduction unit 20, and the output assembly 50 can be easily driven by an external force, so that a user can manually drive the sliding door with a small force. The application replaces the traditional electromagnetic clutch with the mechanical clutch, and the mechanical clutch has simple structure, small volume, light weight and low processing cost, and can be arranged in the shell, thus reducing the installation space of the driving structure, simplifying the installation process, greatly reducing the cost of products and having very strong practicability.

As shown in fig. 6 and 7, the output assembly 50 includes a disc 52 and an output shaft 51 fixedly mounted in the disc 52, a notch 53 is provided on the disc 52, the driving member 33 can drive the movable member 32 to be clamped into the notch 53, the fixed member 31 can drive the movable member 32 to be separated from the notch 53, as shown in fig. 9, a magnetic ring 41 and a hall chip 42 are sleeved on the output shaft 51, the magnetic ring 41 and the output shaft 51 operate synchronously, the hall chip 42 is mounted on a circuit board, and the operation condition of the output shaft 51 is monitored by using the magnetic ring 41 and the hall chip 42. Fig. 6 shows the movable member 32 engaged in the notch 53, and the output assembly 50 rotates as the worm wheel 22 rotates; fig. 7 shows the movable member 32 disengaged from the notch 53, and the output member 50 is now free to rotate.

The disc body 52 is of a disc-shaped structure, a central hole is formed in the disc body 52, the output shaft 51 is fixedly mounted in the central hole, a plurality of notches 53 are formed in the edge of the disc body 52 along the circumferential direction, and the notches 53 are of an arc-shaped structure. The notches 53 are connected and arranged along the edge of the tray 52, the sizes of the notches are equal, the distance between two adjacent notches is equal, and the number of the notches 53 is greater than or equal to the number of the movable pieces 32.

As shown in fig. 6 and 7, the fixing member 31 has a circular ring structure, and the fixing member 31 is located at the outer side of the output assembly 50, that is, the fixing member 31 is located at the outer peripheral side of the disc 52; the movable member 32 has a cylindrical structure, and the movable member 32 can be adsorbed on the fixed member 31, that is, the fixed member 31 sucks the movable member 32 out of the notch 53 by the adsorption force. The number of the movable members 32 is not limited, and alternatively, 2, 3, 4 or 6 movable members 32 may be used.

In one possible embodiment, the fixed member 31 is an iron member, and the movable member 32 is a magnet; that is, when the worm wheel 22 does not rotate, the fixed member 31 can fully adsorb the movable member 32 on the fixed member 31, and the movable member 32 moves a certain distance towards the outer side of the notch 53 and leaves the notch 53; or, in another possible embodiment, the fixed member 31 is a magnet, and the movable member 32 is an iron member; or, in yet another possible embodiment, the fixed member 31 and the movable member 32 are both magnets, and the polarities of the fixed member 31 and the movable member 32 are opposite.

The driving member 33 comprises M driving rods which are sequentially connected, all the driving rods enclose a cavity, the cross section of the cavity is of a polygonal structure or a star-shaped structure, wherein M is more than or equal to 2, and M is an integer. In embodiment 1, the cross section of the cavity is square, four moving parts 32 are provided in this embodiment, when the worm wheel 22 rotates, as shown in fig. 6, each driving rod can drive one moving part 32 to move into the notch 53 of the disc 52, and the driving rods compress the moving parts 32 to make the disc 52 rotate synchronously with the worm wheel 22, when the worm wheel 22 stops running, the external force pushes the output assembly 50 to move, the disc 52 rotates, the moving part 32 moves outwards under the action of the attractive force of the fixing part 31 to separate from the notch, as shown in fig. 7, the moving part 32 is located at the included angle of two adjacent driving rods, so that the output assembly 50 is separated from the worm wheel 22, and thus the output assembly can rotate under the action of the external force without overcoming the resistance of the worm wheel, the worm and the power unit. Of course, in other embodiments, the cross-section of the cavity may have a polygonal configuration such as a quadrilateral, a hexagon, or the like.

Example 2: as shown in fig. 10 to 13, this embodiment differs from embodiment 1 in that: the cross section of the cavity is hexagonal star-shaped, in this embodiment, six moving parts 32 are provided, as shown in fig. 12, all the moving parts 32 are located in the notch 53 of the disc 52, the driving rod is pressed against the moving parts 32, so that the disc 52 rotates synchronously with the worm wheel 22, as shown in fig. 13, the moving parts 32 are adsorbed on the fixed part 31, and all the moving parts 32 are separated from the notch 53 and located at the included angle of two adjacent driving rods, so that the output assembly 50 is separated from the worm wheel 22.

Example 3: as shown in fig. 14-15, the driving mechanism further includes an executing unit, where the executing unit includes a belt pulley 61, a belt 62, and a transmission wheel set, where the transmission wheel set includes a plurality of transmission wheels 63 arranged at intervals, the belt pulley 61 is sleeved on the output assembly 50, that is, the belt pulley 61 is sleeved on the output shaft 51, the belt 62 is sleeved on the belt pulley 61 and the transmission wheel set, and a connection bracket connected with the sliding door is further installed on the belt. The motor 11 drives the worm 12 to rotate, the worm 12 drives the worm wheel 13 to rotate, the worm wheel drives the belt pulley 61 to rotate, and the belt pulley drives the sliding door to slide back and forth through the belt 62; when the execution unit is a belt pulley and a belt, the motor, the worm wheel and the belt pulley are all arranged on a pedal of a middle door of the automobile.

Example 4: 16-23, the driving mechanism further comprises an executing unit, the executing unit comprises a first reel 71 and a second reel 74 sleeved on the output assembly 50 (namely, the first reel 71 and the second reel 74 are sleeved on a coupler 77, the first reel 71 is wound with the first wire rope 72, the second reel 74 is wound with the second wire rope 75, the winding directions of the first wire rope 72 and the second wire rope 75 are opposite, the first reel 71 and the second reel 74 are tensioned by an elastic member 79, the output assembly 50 can drive the first reel 71 and the second reel 74 to rotate and enable the first wire rope 72 and the second wire rope 75 to be in opposite movement states, so that when the output assembly 50 drives the first reel 71 and the second reel 74 to rotate towards a first direction, the output assembly 50 rotates the first reel 71 and the second reel 74, the first wire rope 72 is enabled to act on the first reel 74 and the second reel 74 to be released from the first reel 74; when the output assembly 50 rotates the first reel 71 and the second reel 74 in the second direction, the first wire rope 72 is unwound from the first reel 71, and the second wire rope 75 is wound on the second reel 74, wherein the first direction and the second direction are opposite. The first end of the first wire rope 72 is fixed to the first reel 71, the second end of the first wire rope is connected to a connection frame on the sliding door of the automobile, the first end of the second wire rope 75 is fixed to the second reel 74, and the second end of the second wire rope is connected to a connection frame on the sliding door of the automobile, so that the sliding door is driven to be opened and closed by the first wire rope 72 and the second wire rope 75.

16-17, a coupling 77 is fixedly arranged on the output assembly 50, in a possible implementation manner, spline grooves are formed on the inner side wall of the coupling 77, a spline shaft is fixedly sleeved on the output shaft 51 in the output assembly 50, and the coupling 77 is fixedly sleeved on the spline shaft through the spline grooves so as to fixedly connect the coupling 77 with the output shaft 51; the first reel 71 and the second reel 74 are sleeved with a coupler 77, a first protruding rib 73 is arranged on the inner side wall of the first reel 71, a second protruding rib 76 is arranged on the inner side wall of the second reel 74, a third protruding rib 78 is arranged on the outer side wall of the coupler 77, the first reel 71 and the second reel 74 are arranged along the axial direction of the coupler 77, and the first protruding rib 73 and the second protruding rib 76 are respectively located on two sides of the third protruding rib 78. For convenience of description, a reel close to the worm wheel is defined as a first reel 71, a reel at the outer side is defined as a second reel 74, and the two reels are sleeved on the same coupler 77, so that the structure is compact, and synchronous operation is realized between the coupler and the reels through mutually interfered convex ribs; the elastic member 79 may be a spring having a first end fixed in the first reel 71 and a second end fixed in the second reel 74, and when in operation, the spring applies force to the first and second reels so that the first and second wire ropes are always in a tensioned state.

In one embodiment, as shown in fig. 18, three third ribs 78 are circumferentially arranged on the outer side wall of the coupling 77, correspondingly, three first ribs 73 are circumferentially arranged on the inner side wall of the first reel 71, three second ribs 76 are circumferentially arranged on the inner side wall of each of the second reels 74, and the first ribs 73, the second ribs 76 and the third ribs 78 are in one-to-one correspondence. In one possible implementation, when the coupler 77 runs clockwise, the second reel is driven to rotate, that is, the second reel is used as a driving wheel to perform winding action, the second wire rope pulls out the first wire rope through the door body, and the first reel passively rotates synchronously under the action of the first wire rope; by the interaction between the ribs, one coupling can drive the two reels to rotate, and the positions of the reels are limited by the distribution of the three ribs, so that the reels are always in a proper tension state

The driving mechanism further includes a secondary reduction unit mounted on the output assembly 50, embodiment 5: as shown in fig. 24-32, the secondary reduction unit includes a cycloidal pin gear reducer 81, in this embodiment, an eccentric hole is provided on the output shaft 51, and the cycloidal pin gear reducer 81 is mounted in the eccentric hole by an eccentric shaft and connected to the output shaft 51.

Example 6: as shown in fig. 33-41, the secondary reduction unit is a planetary gear reducer 82, and in this embodiment, the planetary gear reducer 82 is fixedly mounted to the output shaft 51.

Example 7: the secondary reduction unit is a small-tooth-difference reduction assembly, which in this embodiment is fixedly mounted to the output shaft 51. In embodiments 5 to 7, the driving mechanism is capable of outputting a large torque and realizing a large reduction ratio by performing two-stage reduction using the primary reduction unit and the secondary reduction unit, and can be applied to the vehicle door, the seat, and the like, wherein the cycloidal pin gear reducer 81, the planetary gear reducer 82, and the small tooth difference reduction assembly are all prior art in the art, and the internal structure is not described in detail herein.

It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A drive mechanism, characterized by: comprises a power unit (10), a first-stage speed reduction unit (20), a mechanical clutch (30), a shell (40) and an output assembly (50), wherein the first-stage speed reduction unit (20) is installed in the shell (40), the first-stage speed reduction unit (20) comprises a worm (21) and a worm wheel (22) meshed with the worm (21), the power unit (10) is connected with the worm (21), the mechanical clutch (30) comprises a fixed part (31), a movable part (32) and a driving part (33), the fixed part (31) is fixedly installed in the shell (40), the output assembly (50) is rotatably installed in the shell (40), the driving part (33) is fixedly installed on the worm wheel (22), the movable part (32) can move between the fixed part (31) and the output assembly (50), the driving part (33) can enable the movable part (32) to be clamped in the output assembly (50), so that the worm wheel (22) can drive the output assembly (50) to rotate, and the movable part (32) can be separated from the fixed part (50) when the worm wheel (22) rotates, thereby disengaging the output assembly (50) from the worm gear (22).

2. The drive mechanism of claim 1, wherein: the output assembly (50) comprises a disc body (52) and an output shaft (51) fixedly installed in the disc body (52), a notch (53) is formed in the disc body (52), the driving piece (33) can be used for carrying the movable piece (32) to be clamped into the notch (53), the fixing piece (31) can be used for driving the movable piece (32) to be separated from the notch (53), and the output shaft (51) is sleeved with the magnetic ring (41) and the Hall chip (42).

3. The drive mechanism of claim 2, wherein: the disc body (52) is of a disc-shaped structure, a central hole is formed in the disc body (52), the output shaft (51) is fixedly mounted in the central hole, a plurality of notches (53) are formed in the edge of the disc body (52) along the circumferential direction, and the notches (53) are of an arc-shaped structure.

4. The drive mechanism of claim 1, wherein: the fixing piece (31) is of a circular ring structure, the fixing piece (31) is located on the outer side of the output assembly (50), the movable piece (32) is of a cylinder structure, and the movable piece (32) can be adsorbed on the fixing piece (31).

5. The drive mechanism as recited in claim 4, wherein: the fixed piece (31) is an iron piece, and the movable piece (32) is a magnet; or, the fixed part (31) is a magnet, and the movable part (32) is an iron part; or, the fixed part (31) and the movable part (32) are both magnets, and the polarities of the fixed part (31) and the movable part (32) are opposite.

6. The drive mechanism of claim 1, wherein: the driving piece (33) comprises M driving rods which are sequentially connected, all the driving rods enclose a cavity, the cross section of the cavity is of a polygonal structure or a star-shaped structure, M is more than or equal to 2, and M is an integer.

7. The drive mechanism according to any one of claims 1-6, wherein: the automatic sliding door driving device is characterized by further comprising an executing unit, wherein the executing unit comprises a belt pulley (61), a belt (62) and a driving wheel set, the driving wheel set comprises a plurality of driving wheels (63) which are arranged at intervals, the belt pulley (61) is sleeved on the output assembly (50), the belt (62) is sleeved on the belt pulley (61) and the driving wheel set, and a connecting bracket connected with the sliding door is further arranged on the belt.

8. The drive mechanism according to any one of claims 1-6, wherein: the device comprises an output assembly (50), and is characterized by further comprising an execution unit, wherein the execution unit comprises a first reel (71) and a second reel (74) which are sleeved on the output assembly (50), a first steel wire rope (72) is wound on the first reel (71), a second steel wire rope (75) is wound on the second reel (74), the winding directions of the first steel wire rope (72) and the second steel wire rope (75) are opposite, the first reel (71) and the second reel (74) are tensioned through an elastic piece (79), and the output assembly (50) can drive the first reel (71) and the second reel (74) to rotate and enable the first steel wire rope (72) and the second steel wire rope (75) to be in opposite movement states.

9. The drive mechanism of claim 8, wherein: the utility model discloses a motor, including output subassembly (50), output subassembly (50) are last to be fixed to be equipped with shaft coupling (77), first reel (71) with second reel (74) cover is equipped with on shaft coupling (77), the inside wall of first reel (71) is equipped with first protruding muscle (73), the inside wall of second reel (74) is equipped with second protruding muscle (76), the lateral wall of shaft coupling (77) is equipped with third protruding muscle (78), first reel (71) and second reel (74) are followed the axial direction of shaft coupling (77) arranges, just first protruding muscle (73) with second protruding muscle (76) are located respectively the both sides of third protruding muscle (78).

10. The drive mechanism according to any one of claims 1-6, wherein: the device also comprises a secondary speed reduction unit, wherein the secondary speed reduction unit is arranged on the output assembly (50) and comprises a cycloidal pin gear speed reducer (81), a planetary gear speed reducer (82) or a small tooth difference speed reduction assembly.