A self-positioning car door lock knife

Abstract

The invention relates to a self-positioning car door lock knife, comprising a door head plate, a hanging door plate, a door knife back plate, a left knife arm, a right knife arm, an upper rocker link assembly, a lower link assembly, a lock hook assembly, a lock Bolt, dead point rotating device, dead point positioning bracket; said dead point rotating device includes door knife dead point positioning card plate, second roller, third roller, and said upper rocker link assembly is arranged on the dead point rotating device The arc edge of the dead point clamping plate of the door knife on the top realizes the tangential limit movement; the third roller on the dead point rotating device and the door closing force limiting device arranged on the door head plate realize the door closing force limit; the dead point The second roller of the point rotation device and the dead point positioning bracket arranged on the door head plate realize rotation positioning. The invention effectively avoids the danger caused by the passengers in the car and the rescuers outside the hall forcibly opening the door when there is electricity, and at the same time, the passengers in the car and the rescuers outside the car can pick the door for self-rescue and rescue outside the hall under the condition of no power level .

Description

Technical field [0001] The invention involves an elevator sedan door lock door, especially the public positioning sedan door lock door. Background technique [0002] With the convenience brought by elevators in people's daily life, the safety and reliability of the elevator have also attracted more and more attention from all parties of the society. [0003] The national standard GB7588-2003 stipulates: "The surface of the inner surface of the elevator wellway and the floor of the car, the car door frame or the sliding door of the door should not be less than 0.15m.It can only be opened in the unlocking area of the floor door. Except for special circumstances, the operation of the elevator should automatically depends on the lock of the car door, and the car door lock must be confirmed in the electrical safety device.Essence [0004] In addition, the design of the car door lock in the national standard GB7588-2003 needs to meet the following requirements: (1) When the elevator op...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, such as the currently disclosed CN201310176595.1, the patent for the integrated design of the elevator door knife and the car door lock, this integrated design triggers the lock hook directly through the unlocking plate arranged on the back plate of the door knife on the linkage of the car door lock , the unlocking plate does not have a judging mechanism on the rotation unlocking stroke. Considering the assembly gap in the production process and the failure wear of parts, it will inevitably cause obstacles such as excessive rotation between it and the lock hook or intermittent rotation failure. Trouble in shipping and maintenance

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