A kind of bullet-free tamper-resistant safety lock

Abstract

Disclosed is a prying resistant safety lock without a marble. The prying resistant safety lock without the marble comprises a lock core (1) with a lock core axis hole (1.1), a lock core shaft (2) inserted into the lock core axis hole (1.1), a toggling block (3) clamped on the lock core shaft (2) and a key (4) used to rotate the lock core shaft (2). According to the prying resistant safety lock without the marble, no marble hole and no marble are arranged on the lock core shaft (2), a sleeve hole (2.1) is formed in the front end face of the lock core shaft (2) and along the axial direction, and a prying resistant shaft (5) is placed on the sleeve hole (2.1). The prying resistant safety lock without the marble has the advantages that a positioning salient point A is arranged in the lock core axis hole, a positioning concave point B is arranged on a position in an inner polygon sleeve hole of the key, corresponding to the positioning salient point A, the number of the positioning concave points B can be larger than one, imitation difficulty of the key is improved, and simultaneously a guiding function of smoothly inserting the key into a polygon nut is achieved.

Description

Technical field [0001] The invention belongs to door lock technology, and particularly relates to the technical field of a marble-free safety door lock structure. Background technique [0002] Existing door locks usually use a lock core shaft with a pin hole and a pin inserted into the lock core, a key with a notch is inserted into the key hole of the lock shaft, and the lock shaft is rotated by pushing up the pin. The shift block that is clamped on the lock core shaft rotates accordingly, and the lock tongue is moved to shrink the lock tongue to unlock the lock. The shortcomings of unlocking the lock by jacking up the marbles are: first, it is easy to be picked. Now many thieves often use the so-called master keys, pin picks, etc., to easily remove the lock in a relatively short period of time. The pin was lifted up to pick the lock successfully; secondly, it was easy to be destroyed. Some robbers used percussion drills to directly aim at the lock core hole to forcibly break th...

AI Technical Summary

Problems solved by technology

The disadvantages of unlocking by jacking up the marbles are, first, it is easy to be picked. Nowadays, many thieves often use so-called master keys, prying pins, etc. to unlock the lock in a relatively short period of time without much effort. The marble is lifted up to successfully pick the lock; second, it is easy to be damaged. Some robbers use an impact drill to directly aim at the hole of the lock cylinder to forcibly destroy the lock when the lock is hopeless.

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