Anti-theft lock cylinder for flat cross-shaped key

Abstract

The invention relates to an anti-theft lock cylinder for a flat cross-shaped key. Four cylindrical holes are formed in each of two ends of a lock liner, an axial pin tumbler is arranged in each cylindrical hole, and an axial pin tumbler reset spring is arranged in one end of each axial pin tumbler. Four radial cylindrical holes are formed in each of two ends of a lock liner support, a radial pin tumbler is arranged in a first hole, an engineering ball is arranged at one end of the radial pin tumbler, a radial sliding pin tumbler is arranged at the other end of the engineering ball, and a radial pin tumbler reset spring is arranged at the other end of the radial sliding pin tumbler; a radial pin tumbler is also arranged in each of a second hole and a third hole, a radial sliding pin tumbler is arranged at one end of each radial pin tumbler, a radial pin tumbler reset spring is arranged at the other end of each radial sliding pin tumbler; a positioning ball is arranged in a fourth hole, and a radial pin tumbler reset spring is arranged at one end of the positioning ball. The anti-theft lock cylinder for the flat cross-shaped key has the advantages that since a cylindrical lock liner blocking tube formed by stamping is adopted, the anti-theft lock cylinder is simple in structure and low in cost and is uniform in size when produced on a large scale.

Description

technical field [0001] The invention belongs to the field of hardware, and relates to an anti-theft lock cylinder, in particular to an anti-theft lock cylinder with three-dimensional intersecting marbles matched with a flat cross-shaped key. Background technique [0002] In the prior art, though its structure of the single-row pin lock cylinder is simple, its safety performance is not good, and it will be opened by others without a key in about a minute. Although there are many anti-theft lock cylinders with rows of marble structures at present, it is difficult to popularize and use them in large quantities because of the complex structure and high manufacturing process. Contents of the invention [0003] The object of the present invention is to propose an anti-theft lock cylinder that is simple in structure and can be used for a flat cross key in view of the defects in the prior art. [0004] Technical scheme of the present invention is: [0005] An anti-theft lock cyl...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, although the structure of the single-row tumbler lock cylinder is simple, its safety performance is not good, and it will be opened by others without a key in about a minute.

At present, although there are multiple rows of anti-theft lock cylinders with marble structure, it is difficult to popularize and use them in large quantities due to the complex structure and high manufacturing process.

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