Closed type mechanical lock core and key thereof

Abstract

The invention relates to a closed type mechanical lock core and a key thereof. A round lock core comprises a shell, inner compressed springs, inner compressed pins, lock keys, a rotary lock core, round wheels and a cylindrical key. The closed type mechanical lock core is characterized in that a pin groove of the lock core shell is provided with the inner compressed springs and the inner compressed pins which act on the lock keys, the lock keys are simultaneously arranged in lock key grooves of the shell and lock key grooves of the rotary lock core and connect the lock key grooves of the shell and the lock key grooves of the rotary lock core into a whole, the rotary lock core is fixed by the shell and cannot rotate, round wheel grooves of the rotary lock core are provided with round wheels of which the inner bores are provided with bulges, the outer edge of each round wheel is provided with lock key grooves and arc grooves, the lock keys are simultaneously arranged in the lock key grooves of the rotary lock core and the lock key grooves of the round wheels and connect the lock key grooves of the rotary lock core and the lock key grooves of the round wheel into a whole, and the rotary lock core can rotate freely. The key is provided with a group of grooves; when round wheel inner bore bulges are driven to rotate until the rotary lock core can rotate freely, bulges on the key drive the rotary lock core to rotate to unlock the lock, wherein the tail end of the rotary lock core is connected with an unlock shifting plate. A key hole of the lock core is in a closed type structure, and therefore, an unlocking tool cannot enter into the key hole to ensure that the lock core has higher safety.

Description

technical field [0001] The invention relates to a closed mechanical lock cylinder and a key thereof. Background technique [0002] At present, although the known mechanical lock cylinders and their keys have different shapes, most of them are opened on the same cross-section, and the lock springs are also distributed on parallel lines, which are easy to be opened by tools inserted into the keyhole, so that the lock cylinder loses its anti-theft performance. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantage that the opening teeth of the existing mechanical lock cylinder are directly exposed in the lock hole and are easy to be technically opened. The invention provides a closed mechanical lock cylinder and its key. The key hole of the lock cylinder is always in a closed state, and common technical unlocking tools cannot intervene, which can effectively prevent technical and violent tools from twisting and prying the lock ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantage that the opening teeth of the existing mechanical lock cylinder are directly exposed in the lock hole and are easy to be technically opened

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