Anti-theft door lock

Abstract

The invention relates to an anti-theft door lock which is designed for solving the technical problems that existing similar products cannot adapt to installation with different thicknesses easily, the unlocking mode is simplex, unlocking is different to conduct from the inside and the outside simultaneously, and adaption to installation hole-drilling changes is difficult. An internal lock body is arranged inside a door plate of the anti-theft door lock, and a rear panel and an external lock body are fixed to the door plate through hexagonal bolts and second sunk screws correspondingly. The anti-theft door lock is mainly characterized in that racks are arranged on the lock tongue side of the internal lock body; a lock tongue is engaged with a gear on the outer diameter side of a ratchet wheel through the racks; the ratchet wheel is connected with one end of an internal handle on one side of the door plate through a screw; the other end of the screw penetrating through the internal handle stretches into an end hole formed in one end of a regulating rod; the other end, located in the external lock body on the other side of the door plate, of the regulating rod abuts against the hinge end of an external handle of the external lock body; a handle spring is arranged at the hinged point of the external handle; and a tongue sliding hole and a tongue pin located in the position, in the center of the lock tongue, of the internal lock body are connected with a lock shell of the internal lock body. When the anti-theft door lock needs to be unlocked in an emergency from inside of the door plate, the internal handle is rotated; and when unlocking from the front side is needed, the external handle of the external lock body is rotated.

Description

technical field [0001] The invention relates to a door lock, which is an anti-theft door lock. Background technique [0002] A door lock is a device used to lock the door to prevent others from opening it. This device is mechanical or electric; among them, some door locks are used for metal cabinet doors, such metal cabinet doors are electrical equipment cabinet doors or metal cabinet doors. At the same time, anti-theft locks are generally divided into pin locks, blade locks, magnetic locks, IC card locks, fingerprint locks, etc. according to the principle of the lock cylinder. Existing such anti-theft door locks such as the application number 201510693755.9 disclosed in the Chinese patent literature, the application publication date 2016.01.20, the invention name "household code chip key anti-theft door lock"; the anti-theft door lock includes a front panel, a rear panel and a middle lock The locking mechanism, the front panel is provided with an input terminal interface, ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide an anti-theft door lock with different unlocking methods inside and outside the field and different openings for installation, so as to solve the problem that it is difficult to adapt to various opening changes of base station door locks in the current market, and false locks. and technical problems such as difficult transformation

Images