Tapered end and key of bullet lock

Abstract

The present invention discloses a lock head of cylinder lock and its key. It is mainly characterized by that in the interior of lock shell a medium lock core is set, and in the interior of the medium lock core an intenal lock core is set, on two lock cores the ball holes are respectively set, the ball is mounted in the ball hole, and the central position of the described internal lock core is equipped with lock hole, on the edge of said lock hole a slot is cut, and is communicated with the lock hole, and the lock hole face of the described internal lock core is perpendicular to the ball hole on the intenal lock core, and the described slot is matched with ball on the medium lock core, the described lock shell and ball holes on the medium lock core and internal lock core can be mutually communicated when said lock is unlocked, and the front and side track of the key plate can be matched with balls on the internal lock core and medium lock core respectively.

Description

【Technical field】 [0001] The invention relates to an anti-theft lockset, in particular to a tumbler lock. 【Background technique】 [0002] In the prior art, anti-theft locks are various and have a variety of patterns, especially the tumbler locks. The invention patent of the key, the content of the invention is described as follows: "A tumbler lock head, including a lock body, a lock cylinder, a pin, a pin return spring, and a shift fork, is characterized in that there is a square shape inside the round hole of the lock body. There are side column grooves and pinholes on the lock core. The inside of the side column grooves communicates with the side of the pinhole holes and is roughly perpendicular to the pinholes. The outside of the side column grooves can correspond to the square grooves on the inside of the lock body. Each Each marble has a circle of -shaped grooves, and a locking column is arranged in the groove of the side column. The inner sid...

AI Technical Summary

Problems solved by technology

"The anti-theft performance of the tumbler lock with this structure has been improved, but its structure is too complicated. Whether it is a lock head or a key, its manufacturing process is very complicated, and it is quite difficult to process the -shaped groove on the tumbler. , if the -shaped groove is processed too deep, the entire pin will be broken under the impact of heavy objects, and the entire lock will be broken. Its complicated production process also increases the production cost. How to make the anti-theft lock simple in structure, And it has good anti-theft performance, which is a difficult problem that those skilled in the art always want to solve

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