Pin tumbler lock cylinder and key

Abstract

The invention discloses a pin tumbler lock cylinder which comprises a lock case, a lock cylinder body, a plurality of first pin tumblers and first pin tumbler springs. The lock case and the lock cylinder body are radially provided with first pin tumbler holes. The lock cylinder body is axially provided with a key hole. During locking, when each first pin tumbler spring is in a reset state, each first lower beam protrudes out of a key hole wall. The lock cylinder body further comprises at least one second pin tumbler and one second pin tumbler spring. The lock case and the lock cylinder body are radially provided with second pin tumbler holes. During locking, when each second pin tumbler spring is in a reset state, each second lower bead retract into the key hole wall. The lock cylinder of the structure is good in antitheft performance. The invention further discloses a key which comprises a grip part and an unlocking part. The unlocking part is provided with elastic protrusions matched with the second pin tumblers in the pin tumbler lock cylinder.

Description

technical field [0001] The invention relates to a tumbler lock cylinder and a key matched therewith. Background technique [0002] The lock cylinders in the prior art usually have a structure of upper and lower marbles or a structure of marbles and a horizontal grid, and the shapes of the pins are all the same and the structure is single. When this lock core is locked, under the situation that the pin spring returns, the pin balls all protrude from the keyhole wall in the lock tank. This pin can reach the purpose of unlocking by picking, dialing and other means with a special tool, and the anti-theft performance is poor. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides an anti-theft lock cylinder, the lock cylinder has a pin retracted into the wall of the keyhole in the lock cylinder, and the pin is combined with other pins of traditional shape to improve the anti-theft function. [0...

AI Technical Summary

Problems solved by technology

[0002] The lock cylinder in the prior art usually has a structure of upper and lower pinballs or pins plus a horizontal grid structure, and the pins have the same shape and a single structure.

When this kind of lock cylinder is locked, when the pin spring returns, the pinballs all protrude from the keyhole wall in the lock cylinder. This kind of pin can be unlocked by means of picking and dialing with special tools, and the anti-theft performance is poor.

Images