Anti-twist lock

Abstract

The invention discloses a torsion-resistant lock plug which comprises a lock body, a lock element and a torsion-resistant locking structure, wherein the lock element is arranged in a lock body hole, is axially provided with a key hole, and can rotate relative to the lock body under the driving of a key; the torsion-resistant locking structure is arranged in an accommodating cavity of the lock element, and comprises a torsion-resistant part, a torsion-resistant elastic element, a transmission part and a transmission elastic element. The torsion-resistant part can extend out of or retract into the accommodating cavity; the lock body is formed with an insertion hole which is suitable for inserting the torsion-resistant part; by virtue of restoring elastic force of the torsion-resistant elastic element, the torsion-resistant part has a trend of inserting into the insertion hole; the transmission part comprises a resisting and pushing part which extends into the key hole from the accommodating cavity; under the resisting and pushing of the key, the transmission part moves in a direction far away from the key hole to drive the torsion-resistant part to retract into the accommodating cavity; after the key is pulled out of the key hole, by virtue of the restoring elastic force of the transmission elastic element, the transmission part moves in a direction close to the key hole, the resisting and pushing part is inserted into the key hole for being restored, and the torsion-resistant part extends out of the accommodating cavity under the action of the torsion-resistant elastic element. The torsion-resistant lock plug can be used for effectively preventing forced torsion.

Description

technical field [0001] The invention relates to the technical field of locks, in particular to an anti-twist lock head. Background technique [0002] A lock usually includes a transmission mechanism, a deadbolt and a lock cylinder. There is a shifting block on the lock head, driven by the key, the shifting block makes the deadbolt extend or retract into the lock body through the transmission mechanism, so as to complete the locking and opening of the security door. The structure of the lock head includes a lock shell, a lock body and a lock cylinder. The lock body is arranged in the lock shell, and a lock body hole is arranged in the lock body, and the lock cylinder is inserted into the lock body hole. The lock core can be rotated in the lock body hole under the drive of the key. [0003] The existing lock head is usually a tumbler lock head, including a lock case, a lock body, a lock cylinder, and a locking device. The pins, pinholes with the same number of pins as the p...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the pin lock head in the prior art cannot prevent violent twisting, thereby providing a twist-resistant lock head that resists violent twisting

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