Anti-theft lock and key for unlocking

Abstract

The invention discloses an anti-theft lock and a key for unlocking and belongs to a lock. The invention aims to provide the anti-theft lock with a picking prevention function and the key for unlocking. The anti-theft lock comprises a lock core, a lock sleeve, and a marble; a barrier marble of which the length is more than that of the conventional marble is arranged in the lock core; at least one conventional marble is arranged behind the barrier marble; a radial horizontal push pin is arranged at the inner end of a key hole of the lock core opposite to the marble; a compression spring is arranged on a cylinder with a small diameter at the inner end head of the lock core; and a section of lock core body with a non-circular section is arranged at an outer end of the circular lock core to be slidably matched with a non-circular hole at the outer end of a circular lock sleeve hole. The anti-theft lock is particularly suitable for picking prevention occasions.

Description

Technical field: [0001] The invention relates to an anti-theft device, in particular to an anti-theft lock and a key for unlocking it. Background technique: [0002] Due to its simple structure, good manufacturability and low cost, the mechanical pin lock has become the most widely used lock in people's lives, and its market share can reach more than 95%. But the anti-theft performance of this lock is relatively poor, and there are three unsafe factors in it, the first is that the lock core body is cylindrical, and the core body size is small, and the anti-destructive power of the pins and springs in it is not strong, and the thieves use A tool similar to a key is inserted into the hole of the lock cylinder and rotated by external force or using a lever to directly destroy the marble in the hole of the lock cylinder for theft. The second is technical unlocking, also known as lock picking theft, that is, the thief inserts a tool into the lock cylinder In the hole, pry the pi...

AI Technical Summary

Problems solved by technology

But the anti-theft performance of this lock is relatively poor, and there are three unsafe factors in it, the first is that the lock core body is cylindrical, and the core body size is small, and the anti-destructive power of the pins and springs in it is not strong, and the thieves use A tool similar to a key is inserted into the hole of the lock cylinder and rotated by external force or using a lever to directly destroy the marble in the hole of the lock cylinder for theft. The second is technical unlocking, also known as lock picking theft, that is, the thief inserts a tool into the lock cylinder In the hole, pry the pin to open the lock. In addition, due to the limited number of pins and the short length of the existing mechanical pin lock (generally below 2.5mm), the length of the anti-theft unit is not less than 0.3mm, so this mechanical pin The mutual opening rate of the lock is generally not more than one in hundreds of thousands, that is, the mutual opening rate is relatively high. This is the phenomenon that one key can open two different locks in life.

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