Crashproof strong knocking lock pin

Abstract

The invention relates to a lock core for preventing the lock from being prized by strong collision using anticollision key, belonging to the field of locks, which comprises an inner core of the lock core, a lock core body, a plurality of pin holes arranged in row on the inner core of the lock core and the lock core body and communicated with the each other, a lower pin in the pin hole of the inner core of the lock core, an enclosed pin arranged in the top part of the pin hole of the lock core, a spring, an upper pin, and a key hole. The lock core is characterized in that: at least one column of each row of the pin holes of the inner core of the lock core with an anticollision key pin which is suspended in the pin hole of the inner core of the lock core, the upper edge of the anticollision key pin is lower than the surface of the inner core of the lock core, while the lower edge is higher than the bottom of the pin hole of the inner core of the lock core; a cylindrical thin form pin is arranged under the spring. When the collision key is under strong collision, the teeth of the collision key can only collide the common lower pin without colliding the pin of the anticollision key; under the action of the cylindrical thin form pin, the upper pin corresponded with the pin of the anticollision key can not be ejected from the pin hole of the inner core of the lock core and be blocked between the upper pin hole and the lower pin hole in the collision process of the collision key, thus the lock core for preventing the lock from being prized by strong collision using anticollision key has the advantages of ensuring safety by enabling the lock core to be unlocked.

Description

technical field [0001] The invention relates to the field of locks, in particular to a mechanical tumbler lock cylinder with the function of anti-crash key tampering. In particular, it is a mechanical tumbler lock cylinder with the function of preventing a strike key from being struck by a strong force to implement tampering. Background technique [0002] Nowadays, it is popular to use a bump key (Bump key in English) to unlock, also known as "999" key to unlock. The principle is to open the teeth of the key to the maximum, and after the bump key is inserted into the key hole, the lower marbles in the inner core of the lock cylinder will touch the roots of the teeth of the bump key. Then, hit the rear of the striker. At this time, due to the principle of action force and reaction force, the bump key knocks the upper pin in the pins of the inner core of the lock cylinder out of the pin hole in the inner core of the lock core. Turn the lock cylinder to achieve the purpose o...

AI Technical Summary

Problems solved by technology

"However, there are many pins to be changed in the lock cylinder of this utility model mechanical pin lock, and the installation is more troublesome.

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