Cross mechanical anti-theft lock with fixed lock cylinder

Abstract

The invention relates to a cross mechanical anti-theft lock with a fixed lock cylinder. The lock comprises a prying resistant plate, a drilling resistant piece, a backboard, a lock cylinder, an inner rotary ring, an outer rotary ring, a dialing ring, a moment limiter, a cam shaft and a matched key. The lock is mainly characterized in that the lock cylinder is fixedly assembled between the prying resistant plate and the backboard and cannot move. Driven by the cam, the inner and outer rotary rings at the periphery of the lock cylinder synchronously rotate an angle of 15 degrees first and are staggered with the lock cylinder, and then the outer rotary ring continuously rotates independently and unlocks, so that the lock cannot be unlocked technically. The prying resistant plate is located outside the lock cylinder, and a cross hole is formed in a position corresponding to the prying resistant plate, so that the lock is prevented from being destructively unlocked by a forced unlocking tool. The moment limiter can idle when a handle is rotated with brute force, so that the lock is prevented from being damaged and cannot be unlocked. The unlocking process comprises the following steps: inserting the key without rotating the key and rotating the handle for 90 degrees. The lock is locked without the key and in a way of reversely rotating the handle for an angle of 50 degree.

Description

technical field [0001] The invention relates to a mechanical anti-theft lock, in particular to a cross mechanical anti-theft lock with a fixed lock cylinder. Background technique [0002] The performance of the mechanical anti-theft lock is mainly reflected in two aspects: one is the anti-technical opening performance, and the other is the anti-destructive performance. The performance of these two aspects must meet the requirements of the user at the same time, and both are indispensable, otherwise it will not be a real anti-theft lock, and there will be potential safety hazards. [0003] It is obviously not scientific and reasonable to simply rely on the selection of high-quality materials and increase the size of the components to enhance the anti-destructive opening ability of the lock, because it is also necessary to consider the processing technology, processing cost, wear resistance and corrosion resistance of the main components, especially the lock cylinder. gender ...

AI Technical Summary

Problems solved by technology

The thickness of the anti-drilling sheet is 5.5mm, and the gap width of the cross lock hole is 1.3mm. The depth of the forced opening tool inserted into the lock

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