Anti-theft lock core

Abstract

The invention provides an anti-theft lock core. The anti-theft lock core comprises a lock body, a lock plunger, a spring, an upper latch, a lower latch and a rotary rod. A lock cylinder is arranged between the lock body and the lock bolt and the rotary rod is connected with the lock cylinder; a middle latch is arranged between the upper latch and the lower latch and the lock bolt is provided with a key groove; a plurality of spring latches are arranged in the lock bolt; and corresponding through holes are arranged among the lock body, the lock bolt and the lock cylinder and the latches and the spring can freely move in the through holes. The anti-theft lock core has the advantages that the anti-theft performance is good; and the lock cannot be opened under the condition of not inserting a key and the lock cannot be opened by using a special tool such as a 'universal key' and the like to tentatively twist a lock core shaft. In addition, two parts including the lock cylinder and the latch are additionally arranged on the basis of the traditional common lock core and no complicated mechanical structures are arranged, so that the anti-theft lock core is easy to implement and is suitable for various locks.

Description

technical field [0001] The invention relates to a lock structure, in particular to a lock cylinder structure in the lock. Background technique [0002] The lock cores used in various locksets mostly adopt the structure that the lock core shaft is directly connected with the torsion bar. The basic principle is to use the arrangement of multiple spring pins arranged between the lock core shaft and the lock core shaft sleeve to control whether the lock core shaft can rotate. It is stuck and cannot be rotated. When all the spring pins are arranged in a specific pattern according to the shape of the key teeth, the lock core shaft can rotate freely, and then the torsion bar drives the relevant linkage mechanism to open the lock. The disadvantage of this kind of lock cylinder is its poor anti-theft performance. As long as the lock cylinder shaft is forcibly twisted with violence, the lock can be opened by driving the relevant linkage mechanism through the torsion bar. The method ...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of lock cylinder is that the anti-theft performance is poor. As long as the lock cylinder shaft is forcibly twisted with violence, the lock can be opened by driving the relevant linkage mechanism through the torsion bar. The method of tentatively turning the lock core shaft while pulling and inserting special tools such as the "universal key" back and forth can also easily arrange the spring pins in the lock core into a specific law through the feel and listening to the sound, so that the lock can be easily locked. Open

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