Anti-theft lock

Abstract

The invention relates to an anti-theft lock which comprises a lock head body as well as a lock core and a lock tongue that are arranged inside the lock head body; wherein the lock core is fixed insidethe lock head body by a lock core fixing pin, the lock core is internally inserted with a key, an opening pin is arranged on the top of a key hole inside the lock core, and the lock tongue is firmlywithstood by the opening pin; the lock tongue is internally provided with a lock tongue spring, and a locating pin is arranged on the lock tongue; the lock core is internally provided with a flat jacket, a flat inner core positioned inside the flat jacket, a marble jacket and a marble inner core positioned inside the marble jacket; the flat jacket and the marble jacket are in butt connection, theflat inner core and the marble inner core are in butt connection, the rear part of the flat jacket is firmly withstood with the spring, and the spring is arranged inside the lock head body. The marbleinner core is hidden inside the marble jacket, and the lock core can be unlocked by the compound key, so that the complexity of the technology for unlocking the lock core can be enhanced, and the lock core has double anti-theft function. The anti-theft structure of the lock can be applied to the interior of various lock head bodies.

Description

technical field [0001] The invention relates to an anti-theft lock. Background technique [0002] Commonly used mortise door lock lock cylinders are mainly single-row single-grain marbles. For those who understand the principle of unlocking, this lock cylinder structure is easy to open, so the anti-theft performance is relatively poor. Contents of the invention [0003] The purpose of the present invention is to provide an anti-theft lock, which hides the pins in the outer shell, so as to achieve the effect of invisible pins. [0004] The purpose of the present invention is to realize through the following technical solutions: [0005] An anti-theft lock, comprising a lock body, a lock cylinder and a dead bolt are installed in the lock body, the lock cylinder is fixed inside the lock body through a lock cylinder fixing pin, a key is inserted in the lock cylinder, and a key is placed on the top of the keyhole inside the lock cylinder An opening pin is provided, and the op...

AI Technical Summary

Problems solved by technology

[0002] Commonly used mortise door lock lock cylinders are mainly single-row single-grain marbles. For those who understand the principle of unlocking, this lock cylinder structure is easy to open, so the anti-theft performance is relatively poor.

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