Spring-free pin tumbler lock

Abstract

A spring-free pin tumbler lock comprising a lock body (2), a lock barrel (3) disposed in the lock body (2), and pins (4) disposed in the lock barrel (3). A lock barrel groove (203) is provided in the lock body (2), the lock barrel (3) being disposed in the lock barrel groove (203). Concentric pin ducts (301) and cylindrical tooth holes (201) are provided transversally on the lock barrel (3) and the lock body (2) respectively, and penetrate the lock barrel (3) and lock body (2), the diameter of the cylindrical tooth holes (201) being less than the diameter of the pins (4). The spring-free pin tumbler lock has no spring, and thus has no problem of the spring becoming rusty. Additionally, the cylindrical teeth of a key are used instead of a spring, and one or multiple pins (4) are fitted in a pin duct (301), thereby providing strong encryption.

Description

technical field [0001] The invention relates to a lock, in particular to a springless tumbler lock applicable to wristband-type electronic monitoring terminals, handcuffs, instruments and meters, portable suitcases or briefcases, safes and the like. Background technique [0002] As we all know, the core structure of the pin lock is a lock consisting of a lock body, a rotatable lock cylinder, a pin and its spring; one side of the lock body is drilled with a number of pin holes, and one or both sides of the lock core corresponding to the pin pin holes of the lock body are also drilled. There is a billiard hole, and there is a marble retaining rib in the middle. Each marble hole is assembled according to the order of the pins and springs, and then the pin holes of the lock body are sealed with lead-tin alloy. The function of the spring is to always push the two sections of marbles against the bar of the lock cylinder, so that the interface between the rotatable lock cylinder a...

AI Technical Summary

Problems solved by technology

[0003] Due to the existence of necessary springs, the pin lock of the known technology has its disadvantages: on the one hand, because the springs are easy to rust, they cannot be used in places that are often exposed to water; Lock structure personnel can use simple tools to detect the position of the interface between the two sections of pins in each pin hole and the interface between the lock body and the lock cylinder, and then can open the lock without a special key; moreover, in a The billiard hole must use two or more marbles, it is impossible to use one marble, but the hole with only one marble has extremely strong encryption

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