Multilayer lock

Abstract

The invention relates to a multilayer lock. The multilayer lock comprises a locking-pin driving lever piece, outer lock cores, an inner lock core, a key and a lock body; the outer lock cores and the inner lock core are arranged in the lock body; the number of the outer lock cores at least is one; the locking-pin driving lever piece is arranged at the bottom of the outermost-layer outer lock core; the inner lock core is arranged in the outer lock cores; the inner lock core is provided with marble grooves; marble grooves are respectively arranged at upper parts and lower parts of the outer lock cores; the positions for the marble grooves at the upper parts of the outer lock cores are the same as those for the marble grooves of the inner lock core; the same number of groups of marble grooves as the total number of the outer lock cores are arranged at a lower part of the outermost-layer outer lock core; a group of marble grooves is arranged at a lower part of the innermost outer lock core; the outer lock cores are arranged according to the number of marble grooves from outside to inside in a descending sequence; cylinders, springs and lead seals are sequentially arranged in the marble grooves from inside to outside; the key is made from the sum of the total number of the outer lock cores and 1 groups of identical-shape locking teeth; and the lower parts of the outer lock cores are provided with a key slot. According to the invention, the marbles in various layers of the lock cores are placed at different planes, so that a plurality of positions capable of mobilizing the marbles exist, and even unlocking personnel hardly unlock the lock.

Description

technical field [0001] The invention relates to the field of locks, in particular to a multi-layer lock. Background technique [0002] The current lock is simply sleeved by the lock body, which is composed of two sets of inner and outer marbles, and the active lever of the lock pin is connected to the lock cylinder. Therefore, the safety performance of this kind of lock is very poor, and the thief only needs to insert a piece of hard steel plate. The lock can be opened with a twist of the keyhole. A lock with such poor safety performance cannot guarantee the property safety of the people. In order to solve this problem, CN201635504U is often used. figure 1 As shown in the double-cylinder anti-theft lock, the different groups of pins of the inner and outer lock cylinders are on the same plane, and the active lever piece is connected to the outer lock cylinder. Forcibly open, but because the different groups of marbles are on the same plane, the number of marbles that can be ...

AI Technical Summary

Problems solved by technology

[0002] The lock currently used is simply covered with the lock cylinder by the lock body, which is composed of two sets of pins inside and outside, and the active rod of the lock pin is connected to the lock cylinder. The lock hole can be opened by twisting it firmly. A lock with such poor safety performance cannot guarantee the people's property safety. In order to solve this problem, CN201635504U is often used at present. figure 1 As shown in the anti-theft lock with double lock cylinders, the different groups of marbles of the inner and outer lock cylinders are on the same plane, and the active rod is connected to the outer lock cylinder. Therefore, when the thief unlocks the lock, he can only push the marbles back and cannot open the lock. It is forced to open, but because the different groups of pins are on the same plane, even with a multi-layer lock cylinder, the pins that can be mobilized are still limited, and professional locksmiths can still easily open it.

Images