Intelligent lock clutch mechanism

Abstract

The utility model discloses an intelligent lock clutch mechanism which comprises a handle shaft, a shifting piece and a clutch piece, the handle shaft and the shifting piece are arranged in a split mode, the handle shaft comprises a main body section matched with a handle and a clutch section matched with the clutch piece, an assembly ring is arranged at the joint position of the main body section and the clutch section, and a safety block is arranged on the peripheral wall of the assembly ring in a protruding mode. A hollow shaft sleeve arranged on the handle shaft in a sleeving mode is formed in the center of the shifting piece, an embedding groove is formed in the hole wall of an inner hole of the hollow shaft sleeve, and at least part of the safety block extends into the embedding groove. A linkage block and a limiting block are further formed on the shifting piece, and the destructive moment of the safety block is smaller than that of the limiting block. The handle shaft and the shifting piece are arranged in a split mode, the safety block is matched with the caulking groove, and normal unlocking and locking can be completed. During violent unlocking, when the external torque is larger than the destructive torque of the safety block, the safety block can be broken off and fall off from the handle shaft, the handle shaft idles, the shifting piece cannot be linked with the clutch piece, violent unlocking cannot be completed, and the safety of the lock body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of smart lock technology, specifically relating to a smart lock clutch mechanism. Background Technology

[0002] Smart locks can be quickly unlocked by recognizing fingerprints and passwords. Their handles work in conjunction with a clutch mechanism to lock and unlock. The clutch mechanism typically includes a handle shaft, a clutch element, and a clutch pin. The handle shaft rotates synchronously with the handle, and a lever is mounted on it. This lever has a one-way linkage structure that interacts with the clutch element. To lock, lifting the handle causes it to rotate the handle shaft and lever forward. The linkage structure on the lever acts on the clutch element, which in turn engages the locking mechanism within the lock body to complete the locking action. To unlock, a fingerprint or password is used to connect to the motor. The motor drives the clutch pin to engage with the clutch element and handle shaft, creating a linkage between them. Pressing down the handle engages the locking mechanism within the lock body to complete the unlocking action.

[0003] In existing clutch mechanisms, the handle shaft and the lever are mostly integrally molded. This design has the following drawbacks: criminals can forcibly lift the handle to make the lever pass over or destroy the limiting structure to change direction. The linkage structure on the lever can then drive the clutch in the opposite direction to forcibly unlock the lock, affecting the security of the smart lock. Summary of the Invention

[0004] This invention addresses the safety shortcomings of existing intelligent lock clutch mechanisms by providing a new intelligent lock clutch mechanism. The objective of this invention is achieved through the following technical solution:

[0005] A smart lock clutch mechanism includes a handle shaft, a lever, and a clutch component. The handle shaft and the lever are separately configured. The handle shaft includes a main body section that engages with the handle and a clutch section that engages with the clutch component. An assembly ring is provided at the connection between the main body section and the clutch section. A safety block protrudes from the outer peripheral wall of the assembly ring. A hollow bushing is formed in the center of the lever and fits onto the handle shaft. A groove is formed in the inner wall of the hollow bushing, and the safety block extends at least partially into the groove. A linkage block and a limiting block are also formed on the lever. The breaking torque of the safety block is less than the breaking torque of the limiting block.

[0006] Preferably, the inner hole of the hollow bushing is segmented, including an enlarged diameter hole fitted to the assembly ring and a reduced diameter hole fitted to the main body section. The groove is formed on the wall of the enlarged diameter hole, and the connection between the enlarged diameter hole and the reduced diameter hole forms a stepped edge.

[0007] Preferably, the outer diameter of the assembly ring matches the diameter of the enlarged hole; the safety block is a square block, the groove is a square groove that matches the outline of the safety block, and the safety block is entirely embedded in the groove.

[0008] Preferably, the safety block is provided in multiple parts and is spaced apart along the circumference of the assembly ring, and the slot is provided in multiple parts and corresponds one to one of the safety blocks.

[0009] Preferably, there are three safety blocks, which are evenly distributed within a semicircular area of ​​the outer peripheral wall of the assembly ring.

[0010] Preferably, there are three slots, which are evenly distributed within a semicircle of the wall of the enlarged diameter hole, and all slots are distributed on the side close to the linkage block.

[0011] Preferably, the clutch component includes a square bushing, with symmetrical linkage arms formed on both sides of the square bushing to cooperate with the linkage block, and a pin sleeve formed at the bottom of the square bushing for the clutch pin to be inserted.

[0012] Preferably, the clutch section of the handle shaft is provided with a pin groove for the clutch pin to be inserted, and the pin groove is aligned vertically with the pin sleeve.

[0013] Compared with the prior art, this utility model has the following technical effects: the handle shaft and the paddle are set separately. During normal locking and unlocking, the safety block and the groove cooperate to realize the synchronous rotation of the handle shaft and the paddle, thus completing normal locking and unlocking; when forcibly unlocking, if the external torque is greater than the destructive torque of the safety block, the safety block will break and fall off the handle shaft, and the paddle will not be able to rotate synchronously with the handle shaft. The handle shaft will spin freely, and the paddle will not be able to work with the clutch, thus preventing forced unlocking and improving the security of the lock body; the inner holes of the hollow bushings of the handle shaft and the paddle are segmented, and the structure and position of the safety block and the groove are reasonably set, ensuring reliable cooperation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the clutch mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the handle shaft and paddle structure in this utility model;

[0017] Figure 4 This is a schematic diagram of the handle shaft structure in this utility model;

[0018] Figure 5 This is a schematic diagram of the paddle structure in this utility model;

[0019] The markings in the diagram are: panel 10; handle 20; handle shaft 30; main body section 31; assembly ring 32; safety block 321; clutch section 33; pin groove 331; paddle 40; hollow bushing 41; stepped edge 411; groove 412; linkage block 42; limit block 43; clutch component 50; linkage arm 51; pin sleeve 52; square bushing 53. Detailed Implementation

[0020] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings:

[0021] See Figures 1-5 This embodiment discloses an intelligent lock clutch mechanism, which is assembled on the panel 10 of the lock body. It includes a handle shaft 30, a paddle 40, a clutch component 50, and a clutch pin. The handle shaft 30 is connected to the handle 20 and rotates synchronously.

[0022] The handle shaft 30 and the paddle 40 are separately configured. The handle shaft 30 includes a main body section 31 that cooperates with the handle 20 and a clutch section 33 that cooperates with the clutch component 50. An assembly ring 32 is provided at the connection between the main body section 31 and the clutch section 33. A safety block 321 protrudes from the outer peripheral wall of the assembly ring 32. A hollow bushing 41 is formed in the center of the paddle 40 and fits onto the handle shaft 30. A groove 412 is formed on the inner wall of the hollow bushing 41. The safety block 321 extends at least partially into the groove 412. A linkage block 42 and a limiting block 43 are also formed on the paddle 40. The limiting block 43 cooperates with the limiting structure on the lock body to limit the rotation angle of the paddle 40. The linkage block 42 cooperates with the clutch component 50 to realize the one-way linkage between the paddle 40 and the clutch component 50. The breaking torque of the safety block 321 is less than the breaking torque of the limiting block 43. The handle shaft 30 and the lever 40 are separately configured. During normal locking and unlocking, the safety block 321 cooperates with the groove 412 to achieve synchronous rotation of the handle shaft 30 and the lever 40, thus completing normal locking and unlocking. When forced unlocking occurs, if the external torque is greater than the destructive torque of the safety block 321, the safety block 321 will be damaged before the limit block 43. After the safety block 321 breaks, it will fall off the handle shaft 30. The lever 40 will then be unable to rotate synchronously with the handle shaft 30, causing the handle shaft 30 to spin freely. The lever 40 will not be able to engage with the clutch 50, thus preventing forced unlocking and effectively improving the security of the lock body.

[0023] The inner bore of the hollow bushing 41 is segmented, including an enlarged diameter hole that fits into the assembly ring 32 and a reduced diameter hole that fits into the main body section 31. The groove 412 is formed in the wall of the enlarged diameter hole, and the connection between the enlarged diameter hole and the reduced diameter hole forms a stepped edge 411. The segmented inner bore facilitates the proper assembly of the lever 40, thereby ensuring the fit between the safety block 321 and the groove 412.

[0024] The outer diameter of the assembly ring 32 matches the diameter of the enlarged hole; the safety block 321 is a square block, and the groove 412 is a square groove that matches the contour of the safety block 321. The safety block 321 is embedded in the groove 412. The safety block 321 and the groove 412 have a higher degree of fit, which can ensure that the lever 40 and the handle shaft 30 can rotate synchronously when locking and unlocking normally, and can also ensure that there is enough force to be transmitted to the safety block 321 when it is forcibly unlocked, which is conducive to the safety block 321 falling off.

[0025] To further improve the compatibility between the two, multiple safety blocks 321 are provided and spaced apart along the circumference of the assembly ring 32. Multiple slots 412 are provided and correspond one-to-one with the safety blocks 321. Specifically, there are three safety blocks 321, which are evenly distributed within a semicircular range of the outer circumference of the assembly ring 32. There are three slots 412, which are evenly distributed within a semicircular range of the wall of the enlarged diameter hole. The slots 412 are all distributed on the side close to the linkage block 42. During normal locking, the paddle 40 mainly applies force to the clutch 50 through the linkage block 42. The safety blocks 321 and the slots 412 are all distributed on the side close to the linkage block 42, which can improve the reliability of the entire clutch mechanism during normal locking.

[0026] The clutch component 50 includes a square bushing 53. Symmetrical linkage arms 51, which mate with the linkage block 42, are formed on both sides of the square bushing 53. A pin sleeve 52 for inserting a clutch pin is formed at the bottom of the square bushing 53. A pin groove 331 for inserting a clutch pin is provided on the clutch section 33 of the handle shaft 30. The pin groove 331 is vertically aligned with the pin sleeve 52. There are two pin grooves 331, symmetrically arranged vertically. The two linkage arms 51 and two pin grooves 331 allow for easy reversal of the handle 20, providing strong adaptability.

[0027] It should be understood that in the claims and description of this utility model, all instances of "comprising..." should be interpreted as open-ended, meaning equivalent to "at least comprising...", and not as closed-ended, meaning "only comprising...". The above description is merely a specific embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should be included within the scope of protection of this utility model.

Claims

1. A smart lock clutch mechanism, comprising a handle shaft, a lever, and a clutch component; characterized in that, The handle shaft and the paddle are separately configured. The handle shaft includes a main body section that cooperates with the handle and a clutch section that cooperates with the clutch mechanism. An assembly ring is provided at the connection between the main body section and the clutch section. A safety block protrudes from the outer peripheral wall of the assembly ring. A hollow bushing is formed in the center of the paddle and fits onto the handle shaft. A groove is formed on the inner wall of the hollow bushing. The safety block extends at least partially into the groove. A linkage block and a limiting block are also formed on the paddle. The breaking torque of the safety block is less than that of the limiting block.

2. The intelligent lock clutch mechanism according to claim 1, characterized in that, The inner hole of the hollow bushing is segmented, including an enlarged diameter hole fitted to the assembly ring and a reduced diameter hole fitted to the main body section. The groove is formed on the wall of the enlarged diameter hole, and the connection between the enlarged diameter hole and the reduced diameter hole forms a stepped edge.

3. The intelligent lock clutch mechanism according to claim 2, characterized in that, The outer diameter of the assembly ring matches the diameter of the enlarged hole; the safety block is a square block, the groove is a square groove that matches the outline of the safety block, and the safety block is entirely embedded in the groove.

4. The intelligent lock clutch mechanism according to claim 3, characterized in that, The safety block is provided in multiple parts and is arranged at intervals along the circumference of the assembly ring. The slot is provided in multiple parts and is arranged at intervals along the circumference of the wall of the enlarged diameter hole, and corresponds to the safety block one by one.

5. The intelligent lock clutch mechanism according to claim 4, characterized in that, There are three safety blocks, which are evenly distributed within a semicircular area of ​​the outer peripheral wall of the assembly ring.

6. The intelligent lock clutch mechanism according to claim 5, characterized in that, The groove is provided in three parts, and the grooves are evenly distributed within a semicircle of the wall of the enlarged diameter hole, and the grooves are all distributed on the side close to the linkage block.

7. A smart lock clutch mechanism according to any one of claims 1-6, characterized in that, The clutch component includes a square bushing, with symmetrical linkage arms formed on both sides of the square bushing to cooperate with the linkage block, and a pin sleeve formed at the bottom of the square bushing for the clutch pin to be inserted.

8. The intelligent lock clutch mechanism according to claim 7, characterized in that, The clutch section of the handle shaft is provided with a pin groove for the clutch pin to be inserted, and the pin groove is aligned vertically with the pin sleeve.

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