Elevator door lock device

Abstract

The invention provides an elevator door lock device, which can solve the unsafe problem in the prior art resulting from the fact that the elevator automatic door lock causes easy opening of a hoistwaydoor due to spring filature. The elevator door lock device has the structural characteristics that: the outside of the bending part of a lock cross arm is connected with a lock hook with a gravity hammer; the lock hook is positioned above a lock rod; and the lock hook and the lock rod are meshed under the action of the supporting force of a hinged support and the gravity of the gravity hammer soas to solve the unsafe problem caused by the prior elevator automatic door lock due to the spring failure.

Description

technical field [0001] The present invention relates to elevators, in particular to elevator door locks. Background technique [0002] The lock arm in the existing elevator door lock device is arranged below the lock bolt, and is locked on the lock bolt by the lock hook on the lock arm to achieve the effect of locking the elevator door. In the closed state, rely on spring force to make the lock hook fasten on the lock bolt. When opening the door, the door knife pushes the lock arm to the left to rotate, so that the lock arm turns clockwise to disengage from the lock bolt, that is, the lock arm rotates downward to disengage from the lock bolt, and at the same time, the conductive seat on the head of the lock arm is separated from the electric switch contact. When the rotation of the arm is blocked by the limit block, the unlocking action of the door knife ends, and the hall door is driven. The problem with the above-mentioned door lock device is that the lock hook relies on...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an elevator door lock device, which can solve the unsafe problem that the hall door is easily opened due to the failure of the spring action of the elevator automatic door lock in the prior art

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