A clutch for a lock

Abstract

The utility model discloses a kind of clutch for lock, it includes: bottom plate, the lower surface of bottom plate is rotatably connected with handle head, handle head is penetrated to the upper surface of bottom plate, the upper surface of bottom plate is fixedly connected with side plate, the upper surface of handle head is fixedly connected with central shaft, the upper end of central shaft is fixedly connected with clutch piece, clamping groove is provided on clutch piece, the upper surface of bottom plate is fixedly connected with upper lid, the inner surface of upper lid is rotatably connected with connecting shaft, the outer wall of connecting shaft is fixedly connected with clutch, through, clutch is fixedly connected with reset spring on side surface, by above component, handle head is in free state when clutch pin is not pushed into clamping groove, avoid misoperation, only when gear rotates, after a series of transmission makes clutch pin accurate insertion clamping groove, can realize unlocking or lock operation, this design improves the accuracy of operation.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a clutch for locks. Background Technology

[0002] Existing clutches for locks are used to switch between locking and unlocking functions. In some complex lock structures, such as automatic locks or locks with special opening methods (such as some electronic locks that combine mechanical structures), the clutch can connect the power source for unlocking (such as the power of a motor or the power converted from manual operation through a specific mechanism) to the bolt drive mechanism inside the lock cylinder when unlocking is required. In this way, the power can be effectively transmitted to the bolt, causing the bolt to retract and realizing the unlocking action. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a clutch for a lock. In use, rotating gear one drives gear two to rotate, which in turn drives the shaft to twist the linkage spring. After the linkage spring is twisted, it pushes the clutch slider forward, which in turn drives the push plate forward to push the clutch pin into the through hole and finally into the slot on the clutch plate. This makes the clutch plate and the clutch engage. At this time, rotating the handle head will drive the clutch plate and the clutch plate to rotate synchronously. After the clutch plate rotates, it will drive the connecting shaft to rotate, thus unlocking. Reverse rotation locks the lock. When the clutch pin is not pushed into the slot, the handle head is in a free state. The mechanism of pushing in and out of the clutch pin ensures that the handle head is in a free state when the clutch pin is not pushed into the slot, avoiding misoperation. Only when gear one rotates and after a series of transmissions, the clutch pin is accurately inserted into the slot, can the unlocking or locking operation be realized. This design improves the accuracy of operation.

[0004] This utility model also provides a clutch for a lock as described above, comprising: a base plate; a handle head rotatably connected to the lower surface of the base plate, the handle head extending through to the upper surface of the base plate; a side plate fixedly connected to the upper surface of the base plate; a central shaft fixedly connected to the upper surface of the handle head; a clutch plate fixedly connected to the upper end of the central shaft; a groove provided on the clutch plate; an upper cover fixedly connected to the upper surface of the base plate; a connecting shaft rotatably connected to the inner surface of the upper cover; a clutch engagement pin fixedly connected to the outer wall of the connecting shaft; a through hole provided on the clutch engagement pin; and a return spring fixedly connected to the side surface of the clutch engagement pin. The other end of the return spring is fixedly connected to a clutch pin, which is located inside the return spring. The clutch pin is movably connected to a through hole and a slot. The upper surface of the base plate is fixedly connected to a component housing. The inner surface of the component housing is rotatably connected to a gear one. The outer wall of the gear one is meshed with a gear two. The rear surface of the gear two is fixedly connected to a rotating shaft. The outer wall of the rotating shaft is slidably connected to a clutch slider. The outer wall of the rotating shaft is fixedly connected to a linkage spring. The other end of the linkage spring is fixedly connected to the rear surface of the clutch slider. The front surface of the clutch slider is fixedly connected to a push plate, which is movably connected to the clutch pin.

[0005] According to the present invention, a clutch for a lock is provided, wherein a handle return torsion spring is fixedly connected to the outer wall of the central shaft, and the other end of the handle return torsion spring is fixedly connected to the side surface of the side plate.

[0006] According to the present invention, a clutch for a lock is provided, wherein a motor is fixedly connected to the inner surface of the component housing, and the second gear is driven by the motor.

[0007] According to the present invention, a clutch for a lock is provided, wherein a housing cover is movably connected to the upper surface of the component housing, and the housing cover is provided with a connecting groove.

[0008] According to the present invention, a clutch for locking is provided, wherein a locking block is fixedly connected to the inner surface of the connecting groove, and an elastic buckle is fixedly connected to the upper surface of the component housing, and the elastic buckle is movably connected to the locking block.

[0009] Compared with existing technologies, this clutch for locks, when in use, rotates gear one, which drives gear two to rotate. Gear two then drives the shaft to twist the linkage spring. The twisted linkage spring pushes the clutch slider forward, causing the push plate to push the clutch pin into the through hole and finally into the slot on the clutch disc. This connects the clutch disc and the clutch. Rotating the handle head then drives the clutch disc and the clutch disc to rotate synchronously. The rotation of the clutch disc drives the connecting shaft to rotate, unlocking the lock. Reverse rotation locks the lock. When the clutch pin is not pushed into the slot, the handle head is in a free state. The clutch pin pushing and pulling mechanism ensures that the handle head is in a free state when the clutch pin is not pushed into the slot, avoiding misoperation. Only when gear one rotates and a series of transmissions accurately insert the clutch pin into the slot can the unlocking or locking operation be achieved. This design improves the accuracy of operation. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a front view of the clutch used in the lock according to this utility model; Figure 2 This is an exploded view of the clutch used in the lock according to this utility model; Figure 3 This is a structural diagram of the upper closing cover of the clutch used in the lock according to this utility model; Figure 4 This is a structural diagram of the inner structure of the outer casing cover of the clutch used in the lock according to this utility model.

[0011] Legend: 1. Top cover; 2. Clutch; 3. Clutch plate; 4. Handle return torsion spring; 5. Base plate; 6. Side plate; 7. Central shaft; 8. Component housing; 9. Handle head; 10. Clutch slider; 11. Linkage spring; 12. Rotating shaft; 13. Connecting shaft; 14. Return spring; 15. Clutch pin; 16. Slot; 17. Motor; 18. Gear 2; 19. Gear 1; 20. Housing cover; 21. Slot; 22. Elastic buckle; 23. Locking block; 24. Push plate. Detailed Implementation

[0012] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0013] Reference Figure 1-4This utility model discloses a clutch for a lock, comprising: a base plate 5, a handle head 9 rotatably connected to the lower surface of the base plate 5, the handle head 9 extending through to the upper surface of the base plate 5, a side plate 6 fixedly connected to the upper surface of the base plate 5, a central shaft 7 fixedly connected to the upper surface of the handle head 9, a handle return torsion spring 4 fixedly connected to the outer wall of the central shaft 7, the other end of the handle return torsion spring 4 fixedly connected to the side surface of the side plate 6, a clutch plate 3 fixedly connected to the upper end of the central shaft 7, a groove 16 provided on the clutch plate 3, an upper cover 1 fixedly connected to the upper surface of the base plate 5, a connecting shaft 13 rotatably connected to the inner surface of the upper cover 1, a clutch pin 2 fixedly connected to the outer wall of the connecting shaft 13, a through hole provided on the clutch pin 2, a return spring 14 fixedly connected to the side surface of the clutch pin 2, and a clutch pin 15 fixedly connected to the other end of the return spring 14.

[0014] Specifically: the clutch plate 3 is fixedly connected to the upper end of the central shaft 7, the clutch plate 3 is provided with a slot 16, the upper cover 1 is connected to the upper surface of the base plate 5, the connecting shaft 13 is rotatably connected to the inner surface of the upper cover 1, the clutch 2 is fixedly connected to the outer wall of the connecting shaft 13, the clutch 2 is provided with a through hole, one end of the return spring 14 is connected to the side surface of the clutch 2, and the other end is connected to the clutch pin 15. The clutch pin 15 is located inside the return spring 14 and is movably connected to the through hole and the slot 16. At this time, under the action of the return spring 14, the clutch pin 15 is located outside the slot of the clutch plate 3.

[0015] The clutch pin 15 is located inside the return spring 14. The clutch pin 15 is movably connected to the through hole and the slot 16. The upper surface of the base plate 5 is fixedly connected to the component housing 8. The upper surface of the component housing 8 is movably connected to the housing cover 20. The housing cover 20 is provided with a connecting groove 21. The inner surface of the connecting groove 21 is fixedly connected to the locking block 23. The upper surface of the component housing 8 is fixedly connected to the elastic buckle 22. The elastic buckle 22 is movably connected to the locking block 23. The inner surface of the component housing 8 is rotatably connected to the gear 19. A motor 17 is fixedly connected to the inner surface of the outer casing 8. Gear 19 is driven by the motor 17. Gear 2 18 is meshed with the outer wall of gear 19. A rotating shaft 12 is fixedly connected to the rear surface of gear 2 18. A clutch slider 10 is slidably connected to the outer wall of the rotating shaft 12. A linkage spring 11 is fixedly connected to the outer wall of the rotating shaft 12. The other end of the linkage spring 11 is fixedly connected to the rear surface of the clutch slider 10. A push plate 24 is fixedly connected to the front surface of the clutch slider 10. The push plate 24 is movably connected to the clutch pin 15.

[0016] Specifically: Motor 17 starts, driving gear 19 to rotate. Gear 19 meshes with gear 18, thus driving gear 18 to rotate. Gear 18 drives shaft 12 to rotate. A clutch slider 10 is slidably connected to the outer wall of shaft 12. Simultaneously, the linkage spring 11 on the outer wall of shaft 12 exerts a pulling force on clutch slider 10. As shaft 12 rotates, clutch slider 10 drives push plate 24 to move. Push plate 24 pushes clutch pin 15 into the slot 16 of clutch plate 3. Because clutch pin 15 is positioned... At this time, clutch 2 is connected to clutch plate 3. When the handle head 9 is rotated, the handle head 9 drives the central shaft 7 to rotate, the central shaft 7 drives the clutch plate 3 to rotate, the clutch plate 3 drives the clutch 2 to rotate through the clutch pin 15, and the clutch 2 drives the connecting shaft 13 to rotate, thereby realizing the unlocking operation. When locking, the handle head 9 is rotated in the opposite direction. After the operation is completed, the handle return torsion spring 4 will make the handle head 9 return to the initial position, and the clutch pin 15 will also be restored to the appropriate initial state under the action of the return spring 14.

[0017] Working principle: During use, motor 17 starts, driving gear 19 to rotate. Gear 19 meshes with gear 18, thus driving gear 18 to rotate. Gear 18 drives shaft 12 to rotate. Clutch slider 10 is slidably connected to the outer wall of shaft 12. At the same time, the linkage spring 11 on the outer wall of shaft 12 exerts a pulling force on clutch slider 10. As shaft 12 rotates, clutch slider 10 drives push plate 24 to move. Push plate 24 pushes clutch pin 15 into the slot 16 of clutch plate 3. 15 is located on clutch pin 2. At this time, clutch pin 2 is connected to clutch plate 3. When the handle head 9 is rotated, the handle head 9 drives the central shaft 7 to rotate, the central shaft 7 drives the clutch plate 3 to rotate, and the clutch plate 3 drives the clutch pin 2 to rotate through clutch pin 15. The clutch pin 2 drives the connecting shaft 13 to rotate, thereby realizing the unlocking operation. When locking, the handle head 9 is rotated in the opposite direction. After the operation is completed, the handle return torsion spring 4 will make the handle head 9 return to the initial position, and the clutch pin 15 will also be restored to the appropriate initial state under the action of the return spring 14.

[0018] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A clutch for a lock, characterized in that, include: A base plate (5) is rotatably connected to a handle head (9) on its lower surface. The handle head (9) extends through to the upper surface of the base plate (5). A side plate (6) is fixedly connected to the upper surface of the base plate (5). A central shaft (7) is fixedly connected to the upper surface of the handle head (9). A clutch plate (3) is fixedly connected to the upper end of the central shaft (7). A slot (16) is provided on the clutch plate (3). An upper cover (1) is fixedly connected to the upper surface of the base plate (5). A connecting shaft (13) is rotatably connected to the inner surface of the upper cover (1). A clutch (2) is fixedly connected to the outer wall of the connecting shaft (13). A through hole is provided on the clutch (2). A return spring (14) is fixedly connected to the side surface of the clutch (2), and a clutch pin (15) is fixedly connected to the other end of the return spring (14). The clutch pin (15) is located inside the return spring (14), and the clutch pin (15) is movably connected to the through hole and the slot (16). A component housing (8) is fixedly connected to the upper surface of the base plate (5), and a gear one (19) is rotatably connected to the inner surface of the component housing (8). A gear two (18) is meshed with the outer wall of the gear one (19). A rotating shaft (12) is fixedly connected to the rear surface of the gear two (18). A clutch slider (10) is slidably connected to the outer wall of the rotating shaft (12). A linkage spring (11) is fixedly connected to the outer wall of the rotating shaft (12). The other end of the linkage spring (11) is fixedly connected to the rear surface of the clutch slider (10). A push plate (24) is fixedly connected to the front surface of the clutch slider (10). The push plate (24) is movably connected to the clutch pin (15).

2. A clutch for a lock according to claim 1, characterized in that, The outer wall of the central shaft (7) is fixedly connected to a handle return torsion spring (4), and the other end of the handle return torsion spring (4) is fixedly connected to the side surface of the side plate (6).

3. A clutch for a lock according to claim 1, characterized in that, A motor (17) is fixedly connected to the inner surface of the component housing (8), and the gear two (18) is driven by the motor (17).

4. A clutch for a lock according to claim 1, characterized in that, The upper surface of the component housing (8) is movably connected to a housing cover (20), and the housing cover (20) is provided with a connecting groove (21).

5. A clutch for a lock according to claim 4, characterized in that, The inner surface of the connecting groove (21) is fixedly connected to a locking block (23), and the upper surface of the component housing (8) is fixedly connected to an elastic buckle (22). The elastic buckle (22) is movably connected to the locking block (23).

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