A sliding door lock for half-height security doors

Abstract

A sliding door lock for a half-height safety door comprises a lock hook, an installation plate assembly, a lock plate assembly, a hand unlocking assembly and an automatic unlocking assembly. The installation plate assembly comprises an installation plate, lock plate support shafts and a lock hook support shaft, wherein the lock plate support shafts and the lock hook support shaft are fixed on the installation plate; and the lock plate assembly comprises a lock plate and a lock shaft which is fixed on the lock plate, a plurality of long vertical circular holes are arranged on the lock plate, the lock plate support shafts are inserted into the plurality of long vertical circular holes, the lock plate can freely and vertically move by means of the support of the lock plate support shafts, and the lock shaft penetrate through a long square hole on the installation plate to be matched with the lock hook which is installed on a lock hook rotation shaft and can rotate around the lock hook rotation shaft. During locking, the lock shaft is placed on the lock hook to limit the lock shaft to move, and during unlocking, the lock hook rotates while the lock shaft vertically drops; and the automatic unlocking assembly is mainly composed of an electromagnet and an unlocking shaft, wherein the unlocking shaft is fixed on a sliding shaft of the electromagnet and moves with the movement of the sliding shaft of the electromagnet, and the unlocking shaft is fixed on the upper portion of the lock plate.

Description

technical field [0001] The invention relates to a sliding door lock for a half-height safety door, which can be used for push-pull sliding doors in places such as subway platforms and platforms. Background technique [0002] The existing sliding door locking includes a lock head and a lock hook. Generally, the lock head fixed on the sliding door frame and moving with the sliding door directly hits the lock hook in the lock body to realize the automatic locking function. Such a structure often causes the lock body to have a complicated structure and a larger production cost. Under the continuous impact of the lock head, it is easy to cause damage to the lock hook, or even be directly smashed, resulting in inaccurate door locking, or even the situation that the door cannot be locked. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a sliding door l...

AI Technical Summary

Problems solved by technology

Such a structure often results in a complex lock body with a large volume and high production costs.

Under the continuous impact of the lock head, it is easy to cause damage to the lock hook, or even be directly damaged, resulting in inaccurate locking of the door, or even failure to lock the door

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