Manufacturing method of drilling-resistant anti-theft lock provided with spiral acute-angle grooves and adopting spaced positioning

Abstract

The invention discloses a manufacturing method of a drilling-resistant anti-theft lock provided with spiral acute-angle grooves and adopting spaced positioning. A cylinder sleeve is arranged in an inner hole of a lock body, the surface end, close to a keyhole, of the cylinder sleeve has a small diameter, and the inner end, close to the keyhole, of the cylinder sleeve has a large diameter; a sleeve groove and a sleeve convex strip are arranged on the inner wall of the cylinder sleeve, a large sleeve groove is formed in one ends of the sleeve groove and the sleeve convex strip, and a small sleeve groove is formed in the other ends of the sleeve groove and the sleeve convex strip; a key cylinder is inlaid in the inner hole of the cylinder sleeve and formed by combining a plurality of trapezoid pieces, a cylinder groove and a cylinder convex strip are arranged on the outer wall of the key cylinder, a large cylinder groove is formed in one ends of the cylinder groove and the cylinder convex strip, and a small cylinder groove is formed in the other ends of the cylinder groove and the cylinder convex strip; and a cylinder sleeve pin hole is formed in the cylinder sleeve and is aligned with a pin hole.

Description

technical field [0001] The invention relates to an anti-theft lock, more specifically, it relates to a method for manufacturing an anti-drilling anti-theft lock positioned at intervals at acute helical angles. Background technique [0002] For the existing anti-theft locks in the market, the groove of the key hole of the lock cylinder is spiral or straight, and the angle of the bottom of the key hole is a right angle, which is convenient for various keys to be inserted into the key hole overhead, and the right angle of the bottom of the groove matches the key. The edge of the tooth is also a right-angle edge. There are more than two grooves with the same right-angle edge in the key hole, so that the key teeth can be inserted into the groove in the direction at the same right angle along the edge to unlock the lock. The pins, lock pins or piece pins of various existing locks are devices. In the groove of the lock cylinder, there is no block to cover the pin, so that the key m...

AI Technical Summary

Problems solved by technology

[0002] For the existing anti-theft locks in the market, the groove of the key hole of the lock cylinder is spiral or straight, and the angle of the bottom of the key hole is a right angle, which is convenient for various keys to be inserted into the key hole overhead, and the right angle of the bottom of the groove matches the key. The edge of the tooth is also a right-angle edge. There are more than two grooves with the same right-angle edge in the key hole, so that the key teeth can be inserted into the groove in the direction at the same right angle along the edge to unlock the lock. The pins, lock pins or piece pins of various existing locks are devices. In the groove of the lock cylinder, there is no block to cover the pin, so that the key must pass through the pin or lock pin or piece pin when inserted into the key hole. In the gap at the top, there is a range that can be moved back and forth by contacting the marble or pin to adjust the safety tooth pitch to unlock. The lock cylinder has an anti-drilling frame, which is installed in the phase groove on the periphery of the lock cylinder, and an anti-drilling shaft is also installed in the middle of the key hole. Rod, but there is no anti-drilling device between the middle of the keyhole and the periphery, which makes it easier for the thief to drill the pin to destroy the lock cylinder

Patent No.: 200410070079009.2 The lock cylinder is formed by combining the lock cylinder with adhesive, pins, welding or other fixing methods for each monomer. According to the shape of the keyhole, the combination edge of the monomer is arranged vertically. Moreover, grooves are processed on the outer surface of the mandrel or the inner surface of the core sleeve as slots, and there is no matching arrangement of processing grooves and convex grooves on the mandrel or core sleeve, and the diameters of the face end and the inner end of the lock core are equal , you can pry out the combined lock cylinder, there is no phase matching setting of a large head shape on each monomer, and a small head shape on the other end, there is no way to fix the structure, the joint surface of the core shaft combined with the core sleeve is too small and If it is not firm, the thickness of the joint surface of the mandrel in the middle of the two slots is less than the thickness of a post, and the fixation is not firm, so that the stolen tool that is more than double the steel post can turn the mandrel, and the two steel posts The thickness of the inserted column is more powerful to break the mandrel and separate the core sleeve, so that the thief can succeed.

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