Gear transmission type mechanical anti-theft lock

Abstract

The invention discloses a gear transmission type mechanical anti-theft lock, and relates to the field of mechanical anti-theft locks. The gear transmission type mechanical anti-theft lock is characterized in that a key hole and a handle rotating shaft are horizontally arranged, a key is formed by connecting a plurality of pinions in series, each pinion is a complete gear or an incomplete gear or has zero teeth, and the key drives each rack to run for different distances through an intermediate gear. After the key is rotated by a circle, a handle drives a cam to push a locking plate to be inserted into sawteeth of the racks firstly, the racks cannot move any more, the cam pushes an unlocking inserting plate to be inserted into rectangular openings of the racks, and the cam continues to rotate to achieve unlocking. If the key is incorrect, the locking plate still clamps all the racks and cannot move, but the unlocking inserting plate cannot be inserted into the rectangular openings, so that the cam is prevented from continuously rotating, and the lock cannot be unlocked; if the handle is strongly twisted, the handle idles; and the lock is locked only needing to reversely lift the handle without the key. The mechanism is simple in structure, low in manufacturing cost and easy to install, and the lock has the characteristics of technical unlocking prevention, damage unlocking prevention, large secret key amount, stability, durability and the like.

Description

technical field [0001] The invention relates to the field of mechanical anti-theft locks, in particular to a gear transmission type mechanical anti-theft lock. Background technique [0002] At present, common mechanical anti-theft locks in the prior art mainly include tumbler locks, blade locks and hybrid anti-theft locks of the two. Among them, according to the structure of the tumbler lock, the shape of the key can be divided into ordinary single-sided tooth pattern (commonly known as a word lock), double-sided tooth pattern, cross-shaped tooth pattern, single-row or double-row round pits, etc.; the key corresponding to the leaf lock There are one or two serpentine curved grooves on the top; the key of the hybrid anti-theft lock has both serpentine curved grooves and pits. [0003] The main performance of the mechanical anti-theft lock is reflected in the following five aspects: 1. Anti-technical opening performance; 2. Anti-destructive performance, including anti-drillin...

AI Technical Summary

Problems solved by technology

[0006] Along with technology development, a number of patented products with "lock cylinder fixed cross mechanical anti-theft lock" as the core technology in the later period, including "lock cylinder fixed cross mechanical anti-theft lock matching fingerprint lock" (ZL201610990489.0), "a Cam Mechanism for Fingerprint Lock" (ZL201611045195.7), "Double Plug-in Anti-theft Door and External Locking Device" (ZL201610129609.8), "A Forced Reset Device for Rotating Ring of Anti-theft Lock" (ZL201710390280.5), " Cam Mechanism of Fingerprint Lock and Forced Reset Device of Rotating Ring" (ZL201710435512.4), "Automatic Reset and Idling Device of Stop Handle" (ZL201710393215.8), "Single Clutch Cam Mechanism of Fingerprint Lock" (ZL201810363492.9) , "Press-down assembly tool for anti-theft lock cam mechanism" (application number 201910159029.7), "lock cylinder fixed mechanical anti-theft lock for safes" (application number 201910349515.5), "lock cylinder fixed motor-driven clutch for safes" "Intelligent anti-theft lock" (application number 201910349180.7), etc., as a supporting design, the technical development of "lock cylinder fixed cross mechanical anti-theft lock" has been continuously expanded, but there are still certain problems, mainly because in the lock cylinder mechanism as the core component, the lock There are two rotating rings on the periphery of the core, and there are 24 pinholes corresponding to each of the three. The processing accuracy is high and the manufacturing cost is also high. It is suitable for use in occasions with strict anti-theft performance requirements.

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