Anti-theft lock

Abstract

The present invention discloses an anti-theft lockset, belonging to the field of hardware, mainly characterized in that the key comprises a key handle (1), a connecting portion (2) and a key head (4), the key head (4) being mounted on the connecting portion (2), the connecting portion (2) being connected to the key handle (1); columns are provided around a hole, into which the key head (4) is to be mounted, on the connecting portion (2); a long hole (28) is formed on the key head (4); sliders (7) corresponding to the columns (3) are provided in the lock cylinder (12), and a conical chute (8) or bulge (30) fitted with the pin tumbler (23) in the fourth pin tumbler hole (10) is provided on the slider (7); the pin tumbler (22) in the third pin tumbler hole (11) is matched with biting (5) on the key head (4); a slide bar (14) is provided in the lock cylinder (12), with a plurality of flanges (15) different in the outer diameter being provided on the slide bar (14); the pin tumbler (24) in the sixth pin tumbler hole (13) is resisted against the outer circumferential walls of the flanges (15); the slide bar (14) can extend into the long hole (28) of the key head (4); and springs (9, 17) are provided at ends of both the slider (7) and the slide bar (14). The present invention has such a scientific and reasonable structure, achieves multiple and effective guarding against theft and even eliminates the possibility of technical unlocking.

Description

technical field [0001] The present invention relates to a metal lock, in particular to a tumbler anti-theft lock. Background technique [0002] There are many types of locks with various structures, among which there are locks with high anti-theft performance. But most of locksets are because its structure is comparatively single, and its antitheft position is few, and thieves can open it in a lot of time, just technical opening described in the field, therefore, burglary takes place from time to time, gives people's property There are always some high-smart businessmen who research a lock with strong anti-theft performance and develop some anti-theft tools or devices. With the development of the Internet today, criminals can always buy some anti-theft locks. tools, so some anti-theft doors, anti-theft locks and other anti-theft facilities can be technically opened easily. Contents of the invention [0003] In view of the deficiencies in the background technology, the te...

AI Technical Summary

Problems solved by technology

But most of locksets are because its structure is comparatively single, and its antitheft position is few, and thieves can open it in a lot of time, just technical opening described in the field, therefore, burglary takes place from time to time, gives people's property There are always some high-smart businessmen who research a lock with strong anti-theft performance and develop some anti-theft tools or devices. With the development of the Internet today, criminals can always buy some anti-theft locks. tools, so it is easy to technically open some anti-theft doors, anti-theft locks and other anti-theft facilities

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