一种防盗门锁及副锁结构
By introducing a linkage component between a deflector block and a secondary slider into the door lock structure, the locking stroke of the secondary lock cylinder is adjusted, solving the problem of fixed resistance in existing door locks and achieving a balance between flexible resistance adjustment and protective strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG WUYI WANLONG DOOR IND CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing door locks and secondary lock structures have fixed resistance when unlocking and locking, which cannot be adjusted according to actual needs, resulting in problems such as excessive resistance or insufficient protection.
By setting up a linkage component between the deflection block and the secondary slider, the movement stroke of the secondary slider can be controlled by the adjustable linkage component. The resistance to locking and unlocking can be adjusted by adjusting the distance between the linkage component and the deflection block, and the locking stroke of the secondary locking pin can be increased or decreased to adjust the resistance.
It allows for adjustment of locking and unlocking resistance as needed, avoiding excessive resistance while ensuring protection strength, thus providing a flexible anti-theft door lock structure.
Smart Images

Figure CN224514949U_ABST
Abstract
Claims
1. A security door lock and deadbolt structure comprising: The main lock body (10) and the secondary lock body (11) are characterized in that: A type of anti-theft door lock and its auxiliary lock structure also includes: The locking hook (12) is slidably mounted on the main lock body (10); The secondary slider (14) is slidably installed inside the secondary lock body (11). A secondary lock pin (15) is fixedly connected to the secondary slider (14). One end of the secondary lock pin (15) slides out of the secondary lock body (11) to lock. A deflection block (21) is rotatably installed inside the secondary lock body (11). A linkage component (24) is installed on the deflection block (21). A transverse groove (20) for the linkage component (24) to be embedded is provided on the secondary slider (14). The secondary slider (14) moves by deflecting the deflection block (21). The linkage component (24) includes: An adjustment groove (26) is provided on the deflection block (21) and extends radially along the rotation axis of the deflection block (21); Adjust the slider (27), which is slidably installed in the adjustment groove (26); The connector (32) is rotatably mounted on the adjusting slider (27), and the connector (32) is embedded in the transverse groove (20) for movement.
2. The anti-theft door lock and its auxiliary lock structure according to claim 1, characterized in that: A connecting strip (13) is slidably installed inside the secondary lock body (11), and a mounting post (25) is rotatably installed inside the secondary lock body (11). The deflection block (21) is rotatably installed on the mounting post (25), so that the deflection block (21) deflects around the axis of the mounting post (25). A column head (22) is rotatably provided on the deflection block (21). An installation groove (23) for the column head (22) to be embedded is provided on the connecting strip (13). The axis of the column head (22) is in the same direction as the axis of the mounting post (25). The movement of the connecting strip (13) pushes the deflection block (21) to rotate around the mounting post (25) through the column head (22).
3. The anti-theft door lock and its auxiliary lock structure according to claim 2, characterized in that: The locking hook (12) is connected to the connecting bar (13). The movement of the locking hook (12) drives the movement of the connecting bar (13). The main slider (16) is slidably installed inside the main lock body (10). The main locking pin (17) is fixedly installed on the main slider (16). One end of the main locking pin (17) slides out of the main lock body (10) for locking. The moving head (18) is fixedly installed on the main slider (16). The locking hook (12) is provided with a guide groove (19). The moving head (18) is embedded in the guide groove (19) and moves. When the main slider (16) moves, the moving head (18) moves in the guide groove (19) and drives the locking hook (12) to move.
4. The anti-theft door lock and its auxiliary lock structure according to claim 3, characterized in that: Limiting grooves (28) are evenly distributed on both sides of the adjustment groove (26). A limiting member (30) for positioning the adjustment slider (27) is slidably provided on the adjustment slider (27). A limiting head (31) embedded in the limiting groove (28) is provided on the limiting member (30).
5. The anti-theft door lock and its auxiliary lock structure according to claim 4, characterized in that: A bolt (29) is rotatably connected to the adjusting slider (27). The bolt (29) passes through the limiting member (30) and is threadedly connected to the limiting member (30). By rotating the bolt (29), the limiting member (30) moves, so that the limiting member (30) has a first state and a second state. In the first state, the limiting head (31) is embedded in the limiting groove (28) to limit the adjusting slider (27). In the second state, the limiting head (31) is disengaged from the limiting groove (28), and the adjusting slider (27) slides in the adjusting groove (26).
6. The anti-theft door lock and its auxiliary lock structure according to claim 1, characterized in that: The connector (32) has an annular groove, and the edge of the transverse groove (20) is embedded in the annular groove.
7. The anti-theft door lock and its auxiliary lock structure according to claim 5, characterized in that: A retaining ring is fixedly provided at one end of the bolt (29) to limit the limiting member (30) and prevent the limiting member (30) from coming out.
8. The anti-theft door lock and its auxiliary lock structure according to claim 6, characterized in that: The secondary lock body (11) is also provided with a through groove (33). When the secondary slider (14) is in the lowest position, the transverse groove (20) is directly opposite the through groove (33).