Spring bolt driving device with clutch function and lock body

Abstract

The utility model provides a spring bolt driving device with a clutch function and a lock body. The spring bolt driving device with the clutch function comprises a lock cylinder structure, a clutch disc, a motor driving assembly and a reset assembly. The lock cylinder structure is in driving connection with the clutch disc, and the clutch disc can drive the motor driving assembly to move to be separated from the first spring bolt driving assembly; the reset assembly is connected with the motor driving assembly, and the reset assembly is used for enabling the motor driving assembly to be connected with the first spring bolt driving assembly in a reset mode. According to the utility model, through the arrangement of the clutch disc, when the lock is unlocked through the lock cylinder, the motor driving assembly is disconnected from the first spring bolt driving assembly through the clutch disc, and the unlocking through the lock cylinder is not influenced even if the motor driving virtual part of the motor driving point does not return to the zero position.

Description

Technical Field

[0001] The utility model relates to the technical field of lock bodies, in particular to a lock tongue driving device with a clutch function and a lock body. Background Art

[0002] The existing lock body generally has three driving points that can drive and adjust the lock tongue, namely the handle driving point, the lock core driving point and the motor driving point. The lock body can be unlocked and locked through the three driving points. A certain virtual position is set at the junction of the motor drive structure and the lock tongue driving component. The part in the virtual position of the motor drive structure is called the motor-driven virtual position driving part. The motor-driven virtual position driving part has an initial "zero" position, and it will rotate back to the "zero" position each time the unlocking or locking is completed. Because there is a virtual position between the motor-driven virtual position driving part and the lock tongue driving part, it can rotate back to the "zero" position every time.

[0003] If the lock body is locked in the initial state, and the motor-driven virtual position driving member is in the "zero" position, then there is no virtual position at the junction of the unlocking side of the motor-driven virtual position member and the bolt drive assembly, and the motor-driven virtual position member will rotate to this side when unlocking, thereby driving the bolt drive assembly to unlock. After unlocking is completed, the motor rotates to drive the motor-driven virtual position member back to the "zero" position, where there is no virtual position at the junction of the locking side of the motor-driven virtual position member and the bolt drive assembly. During the next locking operation, the motor-driven virtual position member rotates to this side, thereby driving the bolt drive assembly to lock. Because the motor-driven virtual position member will be reset to the "zero" position by rotating after each unlocking or locking, the virtual position between the motor-driven virtual position member and the bolt drive assembly is always on the side that may be close to the next rotation, thereby avoiding affecting other driving points to drive the bolt drive assembly to drive the motor-driven virtual position member, resulting in driving the entire motor-driven structure to rotate.

[0004] Similarly, after the other two driving points are driven, they will also be reset to the "zero" position of the driving virtual position part through the reset structure in the driving assembly, so as to achieve relative virtual position disengagement from the bolt driving assembly, so as to avoid affecting the driving adjustment of the bolt driving assembly by the next driving point. However, the motor driving virtual position part of the motor driving point may sometimes have a motor driving anomaly, which may cause the motor driving virtual position part to be unable to reset to the "zero" position. When the next driving point drives the bolt driving assembly, it will drive the entire motor driving structure to rotate. However, since it requires a large torque to drive the entire motor driving structure to rotate, it will show a "stuck" phenomenon where it cannot rotate. Utility Model Content

[0005] In view of the defects in the prior art, the purpose of the utility model is to provide a lock tongue driving device and a lock body with a clutch function.

[0006] According to the utility model, a lock tongue driving device with a clutch function is provided, comprising: a lock core structure, a clutch plate, a motor driving component and a reset component;

[0007] The lock core structure is drivingly connected to the clutch plate, and the clutch plate can drive the motor drive assembly to move away from the first lock tongue drive assembly;

[0008] The reset component is connected to the motor drive component, and the reset component is used for the motor drive component to reset the first bolt drive component.

[0009] Preferably, the lock body further comprises a sector gear, and the sector gear is used to connect the second lock tongue driving assembly;

[0010] An arc-shaped slide groove is provided in the lock body, and the sector gear is slidably provided in the lock body through the arc-shaped slide groove; the lock core structure is a lock core with a dial wheel, and the dial wheel can drive the sector gear to slide;

[0011] During the rotation of the dial wheel, the dial wheel drives the clutch plate to rotate a preset distance, and then drives the sector gear to rotate.

[0012] Preferably, the clutch plate includes a first vertical rod, a first horizontal rod and a rotation connection structure which are connected and arranged;

[0013] One end of the first vertical rod and one end of the first horizontal rod are connected to the rotation connection structure, and the rotation connection structure is rotatably arranged in the lock body;

[0014] The other end of the first vertical rod is used to abut against the thumbwheel, and the other end of the first horizontal rod is used to push the motor drive assembly to move.

[0015] Preferably, the clutch plate is provided with an arc-shaped abutment surface, and the arc-shaped abutment surface is provided on the first vertical rod;

[0016] When the thumbwheel abuts and pushes the clutch plate, one end of the thumbwheel abuts and slides on the arc-shaped abutting surface.

[0017] Preferably, the reset assembly comprises a fixing frame and a first elastic member;

[0018] The motor drive assembly is slidably disposed on the fixing frame, and the motor drive assembly and the fixing frame are connected via the first elastic member;

[0019] The clutch plate can drive the motor drive assembly to move on the fixing frame, and the first elastic member is used for resetting the motor drive assembly on the fixing frame.

[0020] Preferably, the reset assembly includes a fixing frame, a second elastic member and a fixing plate;

[0021] The motor drive assembly is slidably disposed on the fixing frame, and the tail end of the motor drive assembly is connected to the fixing plate via the second elastic member;

[0022] The clutch plate can drive the motor drive assembly to move on the fixing frame, and the second elastic member is used for resetting the motor drive assembly on the fixing frame.

[0023] Preferably, the motor drive assembly comprises a drive assembly and a first drive gear connected to each other;

[0024] The first bolt drive assembly includes a second drive gear and a bolt drive structure connected to each other;

[0025] The first driving gear is meshed and connected with the second driving gear;

[0026] When the clutch plate drives the motor drive assembly to move, the first drive gear moves away from the second drive gear; when the motor drive assembly is reset by the reset assembly, the first drive gear is connected to the second drive gear.

[0027] Preferably, the first driving gear and the second driving gear are both reversing gears.

[0028] Preferably, the driving assembly includes a driving motor, and the first driving gear is connected to an output end of the driving motor;

[0029] The first locking tongue driving assembly further comprises a first connecting gear, the first connecting gear is coaxially arranged with the second driving gear, and the first connecting gear is connected to the locking tongue driving structure.

[0030] The utility model also provides a lock body, comprising the above-mentioned lock tongue driving device with clutch function.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] 1. The utility model is provided with a clutch plate. When unlocking through the lock core, the motor drive assembly is disconnected from the first lock tongue drive assembly through the clutch plate. Even if the motor drive virtual position member of the motor drive point does not return to the zero position, it does not affect unlocking through the lock core.

[0033] 2. The utility model sets a reset component, which is different from the motor drive dummy part used for the motor drive point. The reset component is used when the clutch plate rotates and the motor drive component loses driving force. The motor drive component is reset through the reset component, thereby ensuring the normal use of the motor drive component under normal circumstances.

[0034] 3. The utility model realizes the pushing of the clutch plate by rotating the dial wheel, and the clutch plate rotates to push the motor drive assembly. There is a virtual distance between the starting position of the dial wheel and the sector gear. The dial wheel abuts against the sector gear only after rotating the virtual distance. At this time, the motor drive assembly has been pushed to disengage from the first lock tongue drive assembly, realizing the process of first driving the motor drive assembly to disengage and then driving the lock tongue, thereby avoiding the influence of the motor drive assembly on the lock core drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0036] Figure 1 It is a structural schematic diagram of a lock body with a bolt drive device having a clutch function;

[0037] Figure 2 A schematic diagram showing the structure of the clutch plate in an initial state;

[0038] Figure 3 To highlight the structural diagram of the dial just touching the clutch plate;

[0039] Figure 4 A schematic diagram for highlighting the structure of the clutch plate being abutted and rotated by the thumbwheel;

[0040] Figure 5 A schematic diagram for highlighting the structure of the reset component in the first embodiment;

[0041] Figure 6 A schematic diagram for highlighting the structure of the motor drive assembly in the first embodiment;

[0042] Figure 7 It is a structural schematic diagram of the dial wheel lock cylinder;

[0043] Figure 8 A schematic diagram for highlighting the structure of the reset component in the second embodiment;

[0044] Fig. 9 To highlight the structure of the motor drive assembly in the third embodiment Figure 1 ; Fig.10 To highlight the structure of the motor drive assembly in the third embodiment Figure 2 ; Fig.11A schematic diagram showing the structure of the clutch cylinder and the clutch rod being in a disengaged state;

[0045] Fig.12 It is a schematic diagram of the structure of the gear lock cylinder;

[0046] Fig.13 To highlight the schematic diagram of the reduction gear assembly;

[0047] Fig.14 A schematic diagram for highlighting the structure of the second bolt drive gear and the push rod;

[0048] Fig.15 To show the structure of virtual position and virtual position driving parts Figure 1 ;

[0049] Fig.16 To show the structure of virtual position and virtual position driving parts Figure 2 .

[0050] Lock core structure 1 Push rod 19

[0051] Clutch plate 2 Guide hole 20

[0052] First vertical rod 201 guide shaft 21

[0053] First crossbar 202 Limiting protrusion 22

[0054] Rotating connection structure 203 First locking tongue 23

[0055] Arc-shaped abutment surface 204 driving motor 24 Drive rod 3 First drive gear 25 Dial 4 First clutch lever 26 Sector gear 5 Clutch sleeve 27 Arc chute 6 Second drive gear 28 Guide plate 7 First reduction double gear 29 Guide rod 8 Second reduction double gear 30 Fixed frame 9 Reducer 31

[0056] First elastic member 10 Third locking tongue driving gear 32 Drive board 11 Drive board 33

[0057] Second elastic member 12 Limiting block 34

[0058] Fixed plate 13 Elastic reset member 35

[0059] First lock tongue drive gear 14 Second lock tongue 36

[0060] First connecting gear 15 Second connecting gear 37

[0061] Second bolt drive gear 16 Second clutch lever 38

[0062] Connecting plate 17 Virtual structure 39

[0063] Oblique slot 18 Motor driven virtual position drive member 40 DETAILED DESCRIPTION

[0064] The utility model is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for those of ordinary skill in the art, several changes and improvements can be made without departing from the concept of the utility model. These all belong to the protection scope of the utility model.

[0065] Embodiment 1:

[0066] like Figures 1 to 7 , Fig.13 As shown, this embodiment provides a lock tongue drive device with a clutch function, including: a lock core structure 1, a clutch plate 2, a motor drive assembly and a reset assembly; the lock core structure 1 is drivingly connected to the clutch plate 2, and the clutch plate 2 can drive the motor drive assembly to move away from the first lock tongue drive assembly; the reset assembly is connected to the motor drive assembly, and the reset assembly is used for the motor drive assembly to reset the first lock tongue drive assembly.

[0067] The reset assembly includes a fixed frame 9 and a first elastic member 10; the motor drive assembly is slidably arranged on the fixed frame 9, and the motor drive assembly and the fixed frame 9 are connected by the first elastic member 10; the clutch plate 2 can drive the motor drive assembly to move on the fixed frame 9, and the first elastic member 10 is used to reset the motor drive assembly on the fixed frame 9.

[0068] The lock body also includes a sector gear 5, which is used to connect to the second bolt drive assembly; an arc-shaped slide groove 6 is provided in the lock body, and the sector gear 5 is slidably arranged in the lock body through the arc-shaped slide groove 6; the lock core structure 1 is a lock core with a dial wheel 4, and the dial wheel 4 can drive the sector gear 5 to slide; when the dial wheel 4 rotates, the dial wheel 4 drives the clutch plate 2 to rotate a preset distance, and then drives the sector gear 5 to rotate. In this embodiment, the lock core structure 1 is a dial wheel lock core. Fig.12 As shown, in some other embodiments, the lock core structure 1 can also be a gear lock core.

[0069] The clutch plate 2 includes a first vertical rod 201, a first horizontal rod 202 and a rotation connection structure 203 which are connected to each other; one end of the first vertical rod 201 and one end of the first horizontal rod 202 are connected to the rotation connection structure 203, and the rotation connection structure 203 is rotationally arranged in the lock body; the other end of the first vertical rod 201 is used to abut against the dial 4, and the other end of the first horizontal rod 202 is used to push the motor drive assembly to move. The clutch plate 2 is provided with an arcuate abutting surface 204, which is arranged on the first vertical rod 201; when the dial 4 abuts against and pushes the clutch plate 2, one end of the dial 4 abuts and slides on the arcuate abutting surface 204.

[0070] The motor drive assembly includes a drive assembly and a first drive gear 25 connected to each other; the first lock tongue drive assembly includes a second drive gear 28 connected to each other and a lock tongue drive structure; the first drive gear 25 is meshed and connected with the second drive gear 28; when the clutch plate 2 drives the motor drive assembly to move, the first drive gear 25 moves away from the second drive gear 28; when the motor drive assembly is reset by the reset assembly, the first drive gear 25 is connected to the second drive gear 28. Both the first drive gear 25 and the second drive gear 28 are reversing gears. The drive assembly includes a drive motor 24, and the first drive gear 25 is connected to the output end of the drive motor 24; the first lock tongue drive assembly also includes a first connecting gear 15, which is coaxially arranged with the second drive gear 28 and connected to the lock tongue drive structure.

[0071] In this embodiment, the motor drive assembly includes a drive motor 24, a reducer 31 and a drive plate 11, the reducer 31 is arranged at the output end of the drive motor 24, the drive plate 11 is arranged at one end of the reducer 31 away from the drive motor 24, the drive plate 11 and the reducer 31 are slidably arranged in the fixing frame 9, the clutch plate 2 abuts and pushes the drive plate 11, and then pushes the drive motor 24 and the reducer 31. The first elastic member 10 is arranged between the drive plate 11 and the fixing frame 9, and the first elastic member 10 is a spring.

[0072] The present embodiment also provides a lock body, including the above-mentioned bolt driving device with clutch function. In the lock body, the first bolt driving assembly also includes a reduction gear assembly, the first connecting gear 15 is connected to the bolt driving structure through the reduction gear assembly, and the reduction gear assembly includes at least one level of double reduction teeth. In the present embodiment, the double reduction teeth are arranged in two levels, namely, the first double reduction teeth 29 and the second double reduction teeth 30; the first double reduction teeth 29 are meshed and connected with the first connecting gear 15, the second double reduction teeth 30 are meshed and connected with the first double reduction teeth 29, and the second double reduction teeth 30 are drivingly connected with the bolt driving structure.

[0073] The bolt driving structure includes a first bolt driving gear 14, a driving rod 3, a guide plate 7, a guide rod 8 and a driving plate 33; the driving rod 3 is coaxially arranged with the first bolt driving gear 14, the first bolt driving gear 14 can drive the driving rod 3 to rotate, and the driving rod 3 pushes the driving plate 33 by rotating; the guide rod 8 is slidably arranged on the guide plate 7, one end of the guide rod 8 is connected to the first bolt 23, and the other end of the guide rod 8 is connected to the driving plate 33; the first bolt driving gear 14 is meshed and connected with the second deceleration double gear 30. A limit block 34 is arranged on the end of the driving rod 3 close to the first bolt 23, and an elastic reset member 35 is arranged between the limit block 34 and the guide plate 7.

[0074] The second bolt drive assembly includes a second bolt drive gear 16 and a second connecting gear 37. The second bolt drive gear 16 is meshed and connected with the sector gear 5. The second bolt drive gear 16 and the second connecting gear 37 are coaxially arranged. The second connecting gear 37 is meshed and connected with a third bolt drive gear 32. The third bolt drive gear 32 is coaxially arranged with the first bolt drive gear 14. The second bolt 36 is connected with a connecting plate 17, and an oblique groove 18 is arranged on the connecting plate 17; Fig.14 As shown, a push rod 19 is provided on the second lock tongue driving gear 16, and the push rod 19 is located in the oblique groove 18; the second lock tongue driving gear 16 drives the push rod 19 to rotate, and during the movement of the push rod 19, the connecting plate 17 and the second lock tongue 36 are driven to move in the horizontal direction through the push rod 19 and the oblique groove 18; a guide shaft 21 is provided in the lock body, and a guide hole 20 is provided on the connecting plate 17, and the guide shaft 21 is located in the guide hole 20.

[0075] In this embodiment, the first locking tongue 23 is an oblique locking tongue, the second locking tongue 36 is a main locking tongue, and the driving rod 3 is an oblique tongue driving rod.

[0076] like Fig.15 and Fig.16As shown, a virtual position structure 39 is provided on the third lock tongue drive gear 32, and the virtual position structure 39 is a groove structure. A motor-driven virtual position drive component 40 is provided on the drive rod 3. When the lock body is locked in the initial state, the motor-driven virtual position drive component 40 is located at the "zero" position of the virtual position structure 39, that is, the A position in the figure. When the motor drive component drives to unlock, the motor-driven virtual position drive component 40 rotates in the virtual position structure 39 and reaches the B position at most, and will not drive the second lock tongue drive component connected to the lock core. After unlocking is completed, the motor drive component rotates, and the motor-driven virtual position drive component 40 will return to the A position. Similarly, due to the existence of the virtual position structure 39, when the lock core drives to unlock, it will not drive the first lock tongue drive component. However, when the motor drive assembly does not rotate back to its position due to some reasons, the motor drive virtual position drive member 40 does not return to position A and is located between position A and position B. This will cause the motor drive virtual position drive member 40 to drive the first lock tongue drive assembly when the lock core is unlocked. However, since the motor drive assembly is not in a working state, the first lock tongue drive assembly is in a state where it cannot be driven, and the lock core unlocking will be affected, resulting in failure to achieve normal unlocking. The present application disconnects the motor drive assembly from the first lock tongue drive assembly through a clutch plate, thereby solving the above problem. When there is no clutch, the reducer and the motor will be driven to rotate together. The motor has a certain self-locking torque. After passing through the reducer gear, the lock core needs a lot of torque to rotate. Many users cannot rotate it, and some will break the key.

[0077] Embodiment 2:

[0078] like Figure 8 As shown, the difference between this embodiment and embodiment 1 is that the reset assembly includes a fixing frame 9, a second elastic member 12 and a fixing plate 13; the motor drive assembly is slidably arranged on the fixing frame 9, and the tail end of the motor drive assembly is connected to the fixing plate 13 through the second elastic member 12; the clutch plate 2 can drive the motor drive assembly to move on the fixing frame 9, and the second elastic member 12 is used for resetting the motor drive assembly on the fixing frame 9.

[0079] In this embodiment, the motor drive assembly includes a drive motor 24, a reducer 31 and a drive plate 11. The reducer 31 is arranged at the output end of the drive motor 24, the drive plate 11 is arranged at one end of the reducer 31 away from the drive motor 24, the drive plate 11 and the reducer 31 are slidably arranged in the fixed frame 9, and the clutch plate 2 abuts and pushes the drive plate 11, thereby pushing the drive motor 24 and the reducer 31. A limiting protrusion 22 is arranged at one end of the drive motor 24 away from the reducer 31, one end of the second elastic member 12 is connected to the limiting protrusion 22, and the other end of the second elastic member 12 is connected to the fixed plate 13, and the second elastic member 12 is a spring.

[0080] Embodiment 3:

[0081] like Figures 9-11 As shown, the difference between this embodiment and embodiment 1 is that no reset assembly is provided, and the lock tongue drive device further includes: a first clutch rod 26, a second clutch rod 38 and a clutch sleeve 27; the clutch plate 2 is connected to the clutch sleeve 27, the first clutch rod 26 is connected to the output end of the first lock tongue drive assembly, and the second clutch rod 38 is connected to the motor drive assembly; the clutch sleeve 27 is sleeved on the first clutch rod 26 and the second clutch rod 38; when the clutch plate 2 drives the clutch plate 2 to move, the clutch sleeve 27 can be separated from the first clutch rod 26 or the second clutch rod 38.

[0082] The clutch sleeve 27 is a cylindrical structure, a square guide hole is provided in the middle of the clutch sleeve 27, and the clutch rod 26 is a square column structure, which is located in the square guide hole and can slide in the square guide hole.

[0083] The utility model provides a clutch plate, and when the lock is unlocked by the lock core, the motor drive component is disconnected from the first lock tongue drive component by the clutch plate, and even if the motor drive virtual position member of the motor drive point does not return to the zero position, it does not affect the unlocking by the lock core.

[0084] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0085] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A bolt driving device with a clutch function, characterized in that: include: A lock core structure (1), a clutch plate (2), a motor drive assembly and a reset assembly; The lock core structure (1) is drivingly connected to the clutch plate (2), and the clutch plate (2) can drive the motor drive component to move away from the first lock tongue drive component; The reset component is connected to the motor drive component, and the reset component is used for the motor drive component to reset the first bolt drive component.

2. The bolt driving device with clutch function according to claim 1, characterized in that: The lock body further comprises a sector gear (5), wherein the sector gear (5) is used to connect to the second lock tongue driving assembly; An arc-shaped slide groove (6) is provided in the lock body, and the sector gear (5) is slidably arranged in the lock body through the arc-shaped slide groove (6); the lock core structure (1) is a lock core with a dial wheel (4), and the dial wheel (4) can drive the sector gear (5) to slide; During the rotation of the dial wheel (4), the dial wheel (4) drives the clutch plate (2) to rotate by a preset distance, and then drives the sector gear (5) to rotate.

3. The bolt driving device with clutch function according to claim 2, characterized in that: The clutch plate (2) comprises a first vertical rod (201), a first horizontal rod (202) and a rotation connection structure (203) which are connected to each other; One end of the first vertical rod (201) and one end of the first horizontal rod (202) are connected to the rotating connection structure (203), and the rotating connection structure (203) is rotatably arranged in the lock body; The other end of the first vertical rod (201) is used to abut against the thumbwheel (4), and the other end of the first horizontal rod (202) is used to push the motor drive assembly to move.

4. The bolt driving device with clutch function according to claim 3, characterized in that: The clutch plate (2) is provided with an arc-shaped abutting surface (204), and the arc-shaped abutting surface (204) is provided on the first vertical rod (201); When the thumbwheel (4) abuts against and pushes the clutch plate (2), one end of the thumbwheel (4) abuts and slides on the arc-shaped abutting surface (204).

5. The bolt driving device with clutch function according to claim 1, characterized in that: The reset assembly comprises a fixing frame (9) and a first elastic member (10); The motor drive assembly is slidably arranged on the fixing frame (9), and the motor drive assembly and the fixing frame (9) are connected via the first elastic member (10); The clutch plate (2) can drive the motor drive assembly to move on the fixing frame (9), and the first elastic member (10) is used for resetting the motor drive assembly on the fixing frame (9).

6. The bolt driving device with clutch function according to claim 1, characterized in that: The reset assembly comprises a fixing frame (9), a second elastic member (12) and a fixing plate (13); The motor drive assembly is slidably arranged on the fixing frame (9), and the rear end of the motor drive assembly is connected to the fixing plate (13) via the second elastic member (12); The clutch plate (2) can drive the motor drive assembly to move on the fixing frame (9), and the second elastic member (12) is used for resetting the motor drive assembly on the fixing frame (9).

7. The bolt driving device with clutch function according to claim 1, characterized in that: The motor drive assembly comprises a drive assembly and a first drive gear (25) connected to each other; The first bolt driving assembly comprises a second driving gear (28) and a bolt driving structure connected to each other; The first driving gear (25) is meshingly connected with the second driving gear (28); When the clutch plate (2) drives the motor drive assembly to move, the first drive gear (25) moves away from the second drive gear (28); when the motor drive assembly is reset by the reset assembly, the first drive gear (25) is connected to the second drive gear (28).

8. The bolt driving device with clutch function according to claim 7, characterized in that: The first driving gear (25) and the second driving gear (28) are both reversing gears.

9. The bolt driving device with clutch function according to claim 8, characterized in that: The driving assembly comprises a driving motor (24), and the first driving gear (25) is connected to an output end of the driving motor (24); The first locking tongue driving assembly further comprises a first connecting gear (15), the first connecting gear (15) being coaxially arranged with the second driving gear (28), and the first connecting gear (15) being connected with the locking tongue driving structure.

10. A lock body, characterized in that: A lock tongue driving device with a clutch function comprising any one of claims 1 to 9.

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