Lock bar capable of being locked back urgently

Abstract

The invention discloses a lock bar capable of being locked back urgently. The lock bar comprises a lock body, a lock slot and a back locking mechanism. One side of the lock body is provided with a lock bolt capable of telescoping in a driving manner. The lock slot is formed in one side, provided with the lock bolt, of the lock body. The lock bolt is used for penetrating through the end portion ofthe lock slot and is provided with a through hole penetrating through the upper end face and the lower end face of the lock bolt. The back locking mechanism is arranged in the lock slot. By means of the manner, when an operator operates and uses the lock bar, the operator only needs to pull a pulling rod downwards so that a back locking shaft can be restrained and fixed through an abutting-againstblock, after a door is closed, under the circumstances that the lock is pried or unlocked through other trying ways outside, a second pulling ring can be directly pulled, thus the abutting-against condition between the abutting-against block and the back locking shaft is relieved, a first spring drives the back locking shaft to be popped upwards and penetrate through the through hole in the lockbolt, thus the lock bolt is forced to be locked, at the moment, even if people outside the door have a correct key, relieving cannot be directly achieved, even the driving relation between the lock bolt and a lock cylinder will be locked, and thus people outside the door mistakenly think that the key does not correspond to the lock and are confused. According to the scheme, the back locking response is rapid, and operation is convenient.

Description

technical field [0001] The invention relates to the field of latches, in particular to an emergency back-lockable latch. Background technique [0002] Most of the existing anti-lock bolts are set in the lock body, which usually uses the claws to clamp the rack that drives the deadbolt or otherwise drives an anti-lock bolt to lock with the lock groove. Most of these types of anti-lock mechanisms are It is operated and used when there is no emergency situation, and the response time of its triggering is mostly long, and it is possible for criminals to intervene directly by prying the lock cylinder or using the baffle to block the lock slot from the lock body. There are certain limitations, and the anti-lock mechanism of this form is relatively conventional, and it is easy to be circumvented in a targeted manner. Therefore, a new idea is needed for the anti-lock scheme of the latch. Contents of the invention [0003] In view of the state of the art, the purpose of the presen...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing anti-lock bolts are set in the lock body, which usually uses the claws to clamp the rack that drives the deadbolt or otherwise drives an anti-lock bolt to lock with the lock groove. Most of these types of anti-lock mechanisms are It is operated and used when there is no emergency situation, and the response time of its triggering is most...

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