Lock body structure capable of stopping lock core twisted

Abstract

A lock body structure preventing wringing lock cylinder and an installation method thereof, comprising: a pushlock head arranged in mounting hole; a false fixation is provided between the pushlock head and the mounting hole, the joint strength of which is between the torque force of a key when the lock is normally opened and the torque force of the lock cylinder when it is wrung to be broken. When the lock is normally opened with the key, the pushlock head is fixed relative to the mounting hole, but when the lock body is wrung, the pushlock head rotates freely relative to the mounting hole. The present invention can thoroughly resolve the question that the lock cylinder is damaged by reamer type tools so that the lock would be unlocked illegally, so locking is more practical and reliable.

Description

technical field [0001] The invention relates to a lock, in particular to a lock body structure and an installation method capable of preventing the lock core from being twisted. Background technique [0002] There are two main defects in existing mechanical locks (such as various door locks, vehicle anti-theft locks, electric door locks, etc.). First, the keyhole of the lock cylinder is exposed, so that the core part of the lock, such as the lock cylinder, will directly face the violence of violent tools, and it is easy to be opened by electric drills, reamers, etc. Open by smashing, or by technical operations such as wires, sheet tools, etc. Its two, when installing, lock body and installation hole are fixed completely, are easy to be inserted into keyhole by tools such as reamer, screwdriver and wring the lock core and realize illegal opening. The keyhole is exposed, which provides enough convenient and spacious operating space for illegal unlockers, and the lock body an...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects caused by the fixing of the lock body and the installation hole, a lock body structure that the lock core can rotate freely has occurred. This solution can solve the damage of reamer tools, but the keyhole is still exposed, and the structure needs to be dismantled and installed on the lock every time it is locked and opened, which is very difficult to operate and difficult to use in practice

As another example, Chinese patent 03223225 proposes to change the structure of the lock core to achieve a structure that can be idling without a key to open the lock core, but the improvement of this lock core makes the structure complicated, and the internal structure is easily damaged or deformed by the lateral force. It makes it difficult for the lock cylinder to have the ability of idling protection, and the keyhole is still exposed, the effect is not ideal

[0006] Looking at the above-mentioned schemes, in terms of improving the defects of the lock body, the two defects of keyhole exposure and lock body and lock hole fixing have not been improved in an all-round way. Either the keyhole is hidden, but the lock body and the lock hole are fixed; The lock hole can be rotated relative to each other, but the keyhole is still exposed, and both cannot be taken into consideration

[0007] Among all the above-mentioned schemes, the scheme of hiding the keyhole can prevent the large-scale violent tools from directly damaging the lock cylinder to a certain extent, but it does not completely solve the problem of violent unlocking, especially small-sized reamers (such as L-shaped or with keys) A small reamer with a similar shape) can enter the keyhole to break and unlock the lock; in the scheme where the lock cylinder and the lock hole can rotate relatively, either the operation is very complicated, or the structure of the lock body is very complicated, and the lock cylinder cannot be easily realized. Anti twist function

For a long time, the important problem of the lock cylinder being twisted has been ignored by the industry, and the use of related products has not been seen in practical applications.

[0008] Another defect of all the aforementioned schemes is: the installation of the lock head needs to cooperate with locked objects such as door panels or specific anti-theft locks for placing the lock, so as to form a door or other locking device, so that the manufacture and operation of the lock body The application field is restricted by the structure and design of the object to be locked, and it also brings great trouble to the installation of the lock body, and the above-mentioned lock bodies cannot form a lock device that is easy to manufacture and independent and universal, and cannot be widely used in a simple and convenient manner. Each locked field

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