一种电梯门锁防脱扣安全锁扣
By introducing an anti-disengagement safety latch into the elevator door lock, and using a protective device and a torsion spring to provide continuous torque, the problem of the moving lock hook easily disengaging from the stationary lock hook is solved, ensuring the stability of the elevator door under abnormal conditions, simplifying operation and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN HAIHEBAO MASCH CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-17
AI Technical Summary
The moving lock hook of the existing elevator door lock is easily swinging under the action of external force, causing it to disengage from the stationary lock hook, which poses a safety hazard.
An elevator door lock anti-disengagement safety latch is adopted. The continuous torque is provided by the protective device on the frame and the torsion spring, so that the moving lock hook and the stationary lock hook are firmly engaged. The unlocking and automatic reset are achieved by the cooperation of the telescopic rod and the sliding sleeve.
It effectively eliminates the risk of the moving lock hook disengaging, ensures the elevator door remains stable under severe vibration or impact, simplifies the operation process, reduces the probability of failure, and extends the service life.
Smart Images
Figure CN224512977U_ABST
Abstract
Claims
1. An elevator door lock anti-tripping safety catch comprising a carrier (1), characterized in that: The surface of the carrier (1) is rotatably connected to a movable locking hook (3), and the surface of the carrier (1) is provided with mounting holes (2). The surface of the carrier (1) is provided with a protective device (4). The protective device (4) includes a mounting groove (46). The mounting groove (46) is located on the side of the carrier (1) away from the movable locking hook (3). A rotating rod (45) is rotatably connected to the inner wall of the mounting groove (46). One end of the rotating rod (45) passes through the carrier (1) and is fixedly connected to the axis of the movable locking hook (3). A guide rod (416) is fixedly connected to the inner wall of the mounting groove (46). A sliding sleeve (415) is slidably connected to the guide rod (416). A stop block (44) is fixedly connected to one side of the sliding sleeve (415). A pressing block (41) is fixedly connected to the upper surface of the movable locking hook (3). A bending part (43) is provided on one side of the pressing block (41).
2. The elevator door lock anti-tripping safety catch according to claim 1, characterized in that: One end of the rotating rod (45) is fixedly connected to a positioning block (47), and a torsion spring (48) is fixedly connected to the side of the positioning block (47) near the rotating rod (45). The torsion spring (48) is sleeved on the rotating rod (45), and the end of the torsion spring (48) away from the positioning block (47) is fixedly connected to the inner wall of the mounting groove (46).
3. The elevator door lock anti-tripping safety catch of claim 1, wherein: The inner wall of the mounting groove (46) is fixedly connected to a mounting base (412), and the inside of the mounting base (412) is fixedly connected to a telescopic rod (413). The driving end of the telescopic rod (413) is fixedly connected to a connecting block (414), and one side of the connecting block (414) is fixedly connected to the surface of the sliding sleeve (415).
4. The elevator door lock anti-tripping safety catch of claim 1, wherein: The surface of the extrusion block (41) is fixedly connected to a limiting hook (42), and the abutment block (44) is adapted to the limiting hook (42).
5. The elevator door lock anti-tripping safety catch of claim 1, wherein: The upper end of the guide rod (416) is fixedly connected to a stop block (417), and the edge of the stop block (417) is rounded.
6. The elevator door lock anti-tripping safety catch of claim 2, wherein: The inner wall of the mounting groove (46) is provided with a threaded groove (49), and a protective cover (410) is threadedly connected in the threaded groove (49). The positioning block (47) and the torsion spring (48) are both located in the protective cover (410).
7. An elevator door lock trip proof safety latch according to claim 6, wherein: The protective cover (410) has protrusions (411) fixedly connected to its surface.