Anti-bump key lock core

Abstract

The invention relates to the field of lockset, in particular to a lock core capable of preventing from being picked after the lock core is bumped by a bump key. An anti-bump key lock core comprises an inner core of the lock core, a lock core body, a plurality of rows of marble holes, lower marbles, sealed marbles, springs, upper marbles, a shifting piece and an inner rotating piece, wherein the plurality of rows of marble holes which are communicated are arranged on the lock core body and the inner core of the lock core; the lower marbles are arranged in the marble holes of the inner core of the lock core; the sealed marbles are arranged at the tops of the marble holes of the lock core body; the springs are arranged below the sealed marbles; the upper marbles are arranged in the marble holes of the lock core body when the lock core is in an open state; the shifting piece is used for unlocking a bolt; the inner rotating piece is arranged in the inner core of the lock core and drives the shifting piece; and the invention is characterized in that an anti-bump key spring is arranged in the inner rotating piece which drives the shifting piece. When the lock core is bumped by the bump key for picking, the elasticity of the anti-bump key spring generates a counteracting force on the bumping action force to consume the action force, so that the action of the bumping force of the bump key on the marbles is reduced, and all upper marbles are difficult to be ejected out of the marble holes of the inner core of the lock core simultaneously, thus the lock core can not be picked by bumping of the bump key.

Description

technical field [0001] The invention relates to the field of locks, in particular to a lock cylinder which prevents the lock from being stolen after the lock cylinder is struck by a striker key. Background technique [0002] There are many methods of unlocking that are popular in the world today, including: drill bit unlocking, pulling the lock cylinder to unlock, lockpicking tools and so on. And there are many kinds of anti-unlocking technologies: anti-prying lock cylinder, anti-drilling lock cylinder, anti-pull lock cylinder and anti-drop lock cylinder. The patent number is 200720106992.1, and the name is "An anti-prying, anti-drilling and anti-pulling lock core" patent technology. Anti-drilling and anti-pulling iron sheets are provided at the heads of both ends of the core. The anti-drilling and anti-extraction iron sheet keeps the thief's drilling and extraction tools out of the key hole of the lock cylinder, further strengthens the anti-drilling function, ensures the ...

AI Technical Summary

Problems solved by technology

[0004] However, there are still some defects in the existing anti-collision key lock cylinder, such as: setting anti-collision key pins and cylindrical thin pins, which makes the product structure more complicated and the assembly is more time-consuming

There is also a high requirement for the production accuracy of the parts of the product, resulting in an increase in cost

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