A kind of anti-violence three-way lock

Abstract

The invention discloses a three-way lock prevented from being violently unlocked. The three-way lock comprises a shell, wherein a lock plate and two lock columns are arranged in the shell, and the upper lock column is connected with an upper rack; a sleeve is fixedly arranged in the shell, the lower end of the sleeve is provided with an opening, a limiting rod is arranged in the sleeve, and a limiting hole is formed in the upper top surface of the upper rack; a connecting end head is arranged on the limiting rod, the side wall of the sleeve is connected with a sliding base, a stand column is arranged on the sliding base, a torsion spring is arranged between the top end of the stand column and the connecting end head, a permanent magnet is arranged at the top end of the limiting rod, an electromagnet is arranged at the inner top of the sleeve, and after the electromagnet is electrified, magnetic field force is instantly generated to repel the permanent magnet, so that the limiting rod overcomes the action by the torsion spring to move downwards; and after the limiting rod moves downwards to pass through the limit position of the torsion spring, due to the elastic action of the torsion spring, the torsion spring generates the thrust to act on the limiting rod to enable the limiting rod to continue moving downwards, and finally the limiting rod enters the limiting hole. Accordingto the lock, the use is convenient, the operation is simple, and the function that the lock is prevented from being violently unlocked is provided, so that the safety is improved.

Description

technical field [0001] The invention belongs to the technical field of locks, and in particular relates to a three-way lock with a self-locking function. Background technique [0002] Locks are very frequently used objects, and are often used in furniture cabinets. [0003] The lock body is one of the components of the lock. There are many kinds of lock bodies, the common ones are one-way lock body, three-way lock body, four-way lock body and so on. Generally used on anti-theft doors, it is responsible for the basic anti-theft work of the anti-theft door. The lock cylinder controls the operation of the lock body, and the lock body is responsible for opening and locking the doors and windows, and plays an important role in anti-theft. The first choice of the lock body should be based on the choice of the type of door and the actual situation. Safety should be considered first, then convenience. [0004] The locks in the current furniture cabinets are basically one-way lock...

AI Technical Summary

Problems solved by technology

[0004] The locks in the current furniture cabinets are basically one-way lock bodies, which are easy to be unlocked

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