Lock cylinder mechanism with improved design

Abstract

The invention relates to a lock cylinder mechanism with an improved design. The lock cylinder mechanism comprises an inside lock cylinder body and an outside lock cylinder body which are connected through a connecting rod, wherein a first spring is arranged between an inside lock cylinder shaft and an inside transmission block, a second spring is arranged between the inside transmission block and an outside transmission block that are opposite in an unlocking dial wheel, a shaft sleeve is arranged in an outside cavity of the unlocking dial wheel, a flange joint of an outer dial wheel of the outside transmission block penetrates through an opening of the shaft sleeve to be opposite to a flange joint of an inner dial wheel of the inside transmission block, a locking slot and a first blind hole are axially formed in the flange joint of the outer dial wheel of the outside transmission block, a third spring and a round-headed deadbolt pin are mounted in the first blind hole, locking pieces are hinged symmetrically to two sides in the locking slot, stressed inclined planes are formed at the rear ends of the two locking pieces to be propped against the round-headed deadbolt pin, and the front ends of the two locking pieces are limited by the opening of the shaft sleeve. Through the design, when the lock cylinder body on one side is destroyed violently, rotary unlocking of the unlocking dial wheel can be limited, and therefore, the lock cylinder mechanism has the advantages of compact structure, good burglarproof performance, wide application range and high reliability.

Description

technical field [0001] The invention relates to an improved lock cylinder mechanism. Background technique [0002] Existing common door lock, under the situation that one side lock core body is destroyed violently, the thief can open the door lock by stirring the unlocking dial, therefore, its anti-theft performance is not very perfect from a certain point of view. Contents of the invention [0003] In order to overcome the problem that the anti-theft performance of ordinary door locks in the prior art is not perfect when they are violently destroyed, the present invention provides an improved design of the lock cylinder mechanism, which has a compact structure design, When encountering a certain degree of violent damage, it can actively limit the rotation and opening of the unlocking dial, which enhances the anti-theft performance and high reliability. [0004] The technical solution adopted by the present invention to solve the technical problem is: comprising an inner ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the anti-theft performance of ordinary door locks in the prior art is not perfect when they are violently destroyed, the present invention provides an improved design of the lock cylinder mechanism, which has a compact structure design, When encountering a certain degree of violent damage, it can actively limit the rotation and opening of the unlocking dial, which enhances the anti-theft performance and high reliability.

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