Hidden dark-key lock core

Abstract

The invention relates to a hidden dark-key lock core which comprises a cylindrical dual-key shell, a lock core fixer, a first cylinder, a second cylinder, a seal spring flat part, a third cylinder, an inner key, an inner key spring, an inner key connecting sleeve, an inner key setting spring and a single-tongue nut, wherein the lock core fixer is arranged in the cylindrical dual-key shell; the first cylinder, the second cylinder, the seal spring flat part and the third cylinder are arranged at the upper end and lower end of the cylindrical dual-key shell respectively; the inner key is arranged in the lock core fixer; the inner key spring is arranged in the inner key; the inner key connecting sleeve is connected with the inner key; the inner key setting spring is connected with the inner key and the inner key connecting sleeve; the single-tongue nut is arranged on the side of the cylindrical dual-key shell; and a steel ball, a key positioning spring and a key positioning seal are sequentially arranged in the lock core fixer. The hidden dark-key lock core is safe and reliable and more flexible to open, and has good tightness and long service life.

Description

technical field [0001] The invention relates to a hidden key lock cylinder. Background technique [0002] Locks are the main tool for people to prevent theft. One of the main means for thieves to commit crimes is to start with the lock, or destroy the lock by prying, smashing, twisting, dialing, drilling, etc., or use a master key to prepare a key to open the lock. The former is aimed at the lock body, and the latter is aimed at the lock cylinder. Therefore, to effectively prevent the technical crimes committed by thieves, the lock cylinder must have absolutely reliable defensive performance, that is to say, there is no technical means to lock it except for the corresponding key. open. [0003] But at present, the automobile lock rolling door locks, anti-theft door locks, safe locks, combination locks, etc. produced with a straight lock cylinder or a cross lock cylinder can all be used by current locksmiths (personnel who specialize in unlocking) and locksmiths. Individual...

AI Technical Summary

Problems solved by technology

[0005] The lock cylinder with the latest technology adopts the opening principle that the position of the key hole is aligned with the position of the pins of the lock cylinder, and the size of the key hole and the displacement size of the pins of the lock cylinder correspond to the opening principle to prevent technical unlocking by thieves. It has a certain positive effect, but it is not enough. The advantage is that the arrangement of the straight-line and equidistant marbles (that is, the pinholes) in the fixed position and the straight-line equidistant holes in the fixed position on the corresponding key have an intuitive leaking factor, and it is easy to imitate a key with the same hole as it; Changes in the position of the holes in the specification (including large and small holes

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