Flat key and locking machine

Abstract

The invention discloses a flat key and a locking machine, comprising a flat key, a shell and a rotatable lock core in the shell. A bending guide groove is formed on a flat surface on at least one lateral surface of the flat key; identification points are distributed along the guide groove; a sliding block is arranged in the lock core; guide posts matched with the guide grooves are arranged on the surface relative to the key of the sliding block; the inner wall of the shell is provided with a pair of grooves corresponding to each sliding block; two grooves in each pair of grooves are respectively positioned at two ends of the sliding block; one sliding block in two end parts of the sliding block enters the groove of the shell in the locked state; during unlocking, the sliding block is driven by pushing the guide posts through the key to move, so that the sliding block is positioned at the unlocking position in the middle of two grooves, both two end parts of the sliding block are positioned outside the grooves and the lock between the lock core and the shell can be removed; and a return spring for pushing the sliding block to leave from the unlocking position is arranged between the sliding block and the lock core. The flat key and the locking machine have the advantages of simple structure, high production efficiency, high code rate, safety and reliability.

Description

technical field [0001] The invention relates to lock technology, in particular to a high-safety flat key and a lock machine. Background technique [0002] Usually, the key of the lock is coded on the side of the key, and the jagged projections on the side of the key push the movement of the marble in the lock, and the lock is opened when the decoding condition is met. Taking a tumbler lock and key as an example, the key is coded, and 7 identification positions and 5 reading depths are set along the side of the key. Therefore, in theory, the mutual opening rate of the lock and key is at least 1 / 5 7 , that is 0.001%, and it is easy to open with a non-matching key unlocking tool. [0003] In order to increase the complexity of lock coding, thereby improving the security level of locks, a variety of locks with different coding mechanisms have been produced. As described in the U.S. patent, publication number US2006 / 0236733, a flat key and a lock machine have a pair of zigzaggi...

AI Technical Summary

Problems solved by technology

The lock described in this patent uses the guide groove on the flat surface of the key to push the slider to move, which increases the code change rate in a small key space and improves the safety performance of the lock. However, its internal structure is relatively complicated, and production and processing higher process requirements

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