Clutch capable of preventing violent unlocking

Abstract

The utility model provides a clutch capable of preventing violent unlocking, which comprises a front handle core in transmission connection with a handle outside a door, a square strip rotating shaft and a square strip rotating shaft cover, a clutch mechanism is arranged between the front handle core and the square strip rotating shaft, a handle connecting part is arranged on the front handle core, a strength weak section is arranged on the handle connecting part, and the square strip rotating shaft cover is arranged on the square strip rotating shaft cover. The strength weak section is arranged on the side away from the outside door handle. The lock clutch has the advantages that the strength weak section is arranged on the front handle core, connected with the handle, of the lock clutch, the handle can normally drive the front handle core under normal force, and when the handle is violently rotated and the force for rotating the handle is larger than the force capable of being borne by the strength weak section of the front handle core, the front handle core can be normally driven by the handle. The strength weak section is broken, so that transmission cannot be generated between the handle and the front handle core, and the purpose of preventing violent unlocking is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of lock technology, specifically a clutch for preventing forced unlocking. Background Technology

[0002] Currently, door locks have poor anti-violent technology. When a lock pick forcefully twists the handle, they may forcefully rotate the clutch, thereby achieving forced unlocking and causing theft inside the house. Therefore, how to prevent forced unlocking is an urgent problem to be solved. Utility Model Content

[0003] The technical problem this invention aims to solve is how to prevent the forced unlocking of door locks.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A clutch designed to prevent violent unlocking includes a front handle core, a square bar pivot, and a square bar pivot cover that are connected to the door handle. A clutch mechanism is provided between the front handle core and the square bar pivot. The front handle core has a handle connection part, and a weak section is provided on the handle connection part. The weak section is located on the side away from the door handle.

[0006] Preferably, the weak point is one or more notches located on the handle connection; or the weak point has a wall thickness or diameter smaller than other locations.

[0007] Preferably, the handle connection portion has a recessed groove on at least one side and also includes a fingerprint module disposed on the handle, with the power signal line of the fingerprint module passing through the groove.

[0008] Preferably, a spring is attached to the power signal line of the fingerprint module.

[0009] Preferably, the handle connection part is also provided with a stabilizing section, and a first bearing is tightly connected to the outside of the stabilizing section.

[0010] Preferably, the square bar pivot cover is provided with a through hole for the square bar pivot to pass through, and a cylindrical extension is provided around the through hole on the side of the square bar pivot cover close to the door panel, and a second bearing is tightly connected to the outside of the extension.

[0011] The beneficial effects of this utility model are as follows: By setting a weak section on the front handle core that connects the lock clutch and the handle, the handle can normally transmit power to the front handle core when force is applied. When the handle is violently rotated, if the force of rotating the handle exceeds the force that the weak section of the front handle core can withstand, the weak section will break, thereby preventing the handle from transmitting power to the front handle core and thus preventing violent unlocking. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the front handle core of this utility model;

[0014] Figure 3 This is a structural schematic diagram of the front handle core of this utility model from another perspective;

[0015] Figure 4 This is a schematic diagram of the structure of the square strip rotating shaft cover of this utility model. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example

[0018] Please see Figures 1-4 The figure shows a clutch for preventing forced unlocking, including a front handle core 1, a square bar pivot 2, and a square bar pivot cover 3, all connected to the door handle. A clutch mechanism is provided between the front handle core 1 and the square bar pivot 2. This clutch mechanism is existing technology and not related to the technical problem to be solved in this application, so it will not be described in detail here. The front handle core 1 has a handle connecting part 11. It is worth noting that in this embodiment, a weak section 111 is provided on this handle connecting part 11, located away from the door handle. The weak section 111 makes this part relatively weak compared to other parts. Under normal use, it can meet normal transmission requirements. However, when forced unlocking is used, the unlocking force is significantly greater than the normal force by several times or even tens of times. At this time, the weak section 111 cannot withstand the force and breaks, causing the handle to lose transmission with the front handle core 1, thus preventing further unlocking via the handle and achieving the purpose of preventing forced unlocking.

[0019] In this embodiment, the weak section 111 is a notch provided on the handle connection part 11. Of course, it can also be designed as multiple notches, or the weak section 111 can have a wall thickness or diameter smaller than other positions. The purpose of all these designs is to weaken the strength of one section, so that it will break when the lock is forcibly opened.

[0020] In this embodiment, the handle connection part 11 has a recessed groove 112 on at least one side, and also includes a fingerprint module disposed on the handle, with the power signal line 4 of the fingerprint module passing through the groove.

[0021] To improve the lifespan of the power signal line 4 of the fingerprint module, this embodiment includes a spring 5 wrapped around the power signal line 4. Since the clutch needs to rotate frequently, the power signal line 4 of the fingerprint module needs to move frequently. This movement causes friction between the power signal line 4 and the internal components of the door lock panel, eventually leading to wear and tear on the wiring harness and potential short circuits. This embodiment uses a spring 5 around the power signal line 4 to prevent direct friction between the power signal line 4 and the internal components of the door lock panel. Although the power signal line 4 still rubs against the spring 5, the friction is relatively small because the inner wall of the spring 5 is a smooth, round surface, providing better protection for the wiring harness and extending its lifespan.

[0022] In this embodiment, a stabilizing section 113 is also provided on the handle connecting part 11, and a first bearing 6 is tightly fitted to the outside of the stabilizing section. The square bar pivot cover 3 is provided with a through hole for the square bar pivot 2 to pass through. A cylindrical extension section 31 is provided around the through hole on the side of the square bar pivot cover 3 closest to the door panel, and a second bearing 7 is tightly fitted to the outside of the extension section 31. In this embodiment, bearings are provided on both the handle connecting part 11 and the square bar pivot cover 3, making the handle more stable when rotating and preventing a wobbling feeling. Wobble will cause impact, which will lead to the gap getting bigger and bigger, affecting product quality. The setting of two bearings in this embodiment makes the handle and the door lock panel more stable, the handle rotation is smoother, and it has a more upscale feel.

Claims

1. A clutch for preventing forced unlocking, comprising a front handle core, a square bar pivot, and a square bar pivot cover that are driven and connected to the outside handle, wherein a clutch mechanism is provided between the front handle core and the square bar pivot, and a handle connecting part is provided on the front handle core, characterized in that: The handle connection has a weak section, which is located on the side away from the outside handle.

2. The clutch for preventing forced unlocking as described in claim 1, characterized in that: The weak point is one or more notches located on the handle connection; or the weak point is a section with a wall thickness or diameter smaller than other locations.

3. The clutch for preventing forced unlocking as described in claim 2, characterized in that: The handle connection part has a recessed groove on at least one side, and also includes a fingerprint module disposed on the handle, with the power signal line of the fingerprint module passing through the groove.

4. The clutch for preventing forced unlocking as described in claim 3, characterized in that: A spring is attached to the power signal line of the fingerprint module.

5. The clutch for preventing forced unlocking as described in claim 1, characterized in that: The handle connection part is also provided with a stabilizing section, and a first bearing is tightly connected to the outside of the stabilizing section.

6. The clutch for preventing forced unlocking as described in claim 5, characterized in that: The square bar pivot cover is provided with a through hole for the square bar pivot to pass through. A cylindrical extension is provided around the through hole on the side of the square bar pivot cover close to the door panel. A second bearing is tightly connected to the outside of the extension.

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