Multi-safety anti-theft gate safety lock

Abstract

A safety lock includes cover plate, shell and night lock of revolving axial night hole. The shell is fixed to the cover plate. The lock is posited between the inner and outer fasten plates, and composed by lock bolt device, auto lock bolt and revolving axial device. There are two night lock heads, the inner one and outer one, which is inserted through the inner and outer fasten plate separately and connected to cam orientation part. The cam orientation part is fastened to the shell. The cam is revolvably connected to the cam orientation part to control the bolt device and auto lock bolt. The revolving axial device is fastened to the inner plate.

Description

technical field [0001] The invention relates to a safety door lock, in particular to a multi-insurance anti-theft door safety door lock with an axial rotary pin lock head for anti-theft doors. Background technique [0002] Door locks are indispensable and important daily necessities in people's daily life. With the enhancement of people's safety awareness, people's requirements for the safety and anti-theft performance of door locks are also getting higher and higher. At present, there are many types of anti-theft door locks at home and abroad. According to different door lock structures, there are many types of keys matching door locks on the market, such as in-line type, cross type, S-shaped, axial cylindrical, etc. . A safety door lock has appeared in the prior art, for example, the Chinese patent application number is 200610050649.X discloses a safety door lock with a rotary tumbler lock head, which includes a cover plate and a housing, and also has a guide that is cont...

AI Technical Summary

Problems solved by technology

Such a structure has the following disadvantages: the lock only adopts two insurances, the large bolt and the small bolt, and the insurance factor is low. Objectively, there is still a potential safety hazard that the key is imitated.

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