Spiral acute angle interval positioning anti-drilling anti-theft lock

Abstract

The invention discloses a spiral acute angle interval positioning anti-drilling antitheft lock which is characterized in that a lock cylinder comprises a plurality of trapezoid pieces and is provided with a small cylinder groove and a large cylinder groove, corresponding matched with the small sleeve groove and the large sleeve groove of a sleeve concave groove and a sleeve convex grove, of a cylinder concave groove and a cylinder convex groove, each trapezoid piece is provided with large diameter and small diameter combing cylinder sleeve surface end small diameter and inner end large diameter, the lock pin hole of a cylinder sleeve is parallel with the lock pin hole of the lock cylinder, at least one spiral acute-angle groove matched with the acute-angle oblique edge of the spiral interval teeth of a key is formed in the lock cylinder, the spiral is 180 degrees, the lock pin hole is formed in the lateral side of the acute angle groove and provided with a lock pin opening, a lock pin matched with the interface lock pin of a lock body interface lock pin hole is disposed in the lock pin hole, at least one spiral trapezoid anti-drilling column is formed in the trapezoid anti-drilling hole of the lock cylinder, the large head of the anti-drilling column is matched with the large-opening hole in the tail end of the lock cylinder, the anti-drilling column shrinks gradually towards the surface end of the lock cylinder to allow the small head of the anti-drilling column to be combined with a small-opening hole and clamped to prevent from being pried out, the key rotates in the lock cylinder, the interval teeth of the acute angle oblique edge lifts the oblique lifting surface of the lock pin, and safety tooth distance is achieved.

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 of the other side at the same right angle to unlock the lock. The pins, lock pins or piece pins of various existing locks are all Installed in the groove of the lock cylinder, it does not block and hide the pin, so that t...

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 of the other side at the same right angle to unlock the lock. The pins, lock pins or piece pins of various existing locks are all Installed in the groove of the lock cylinder, it does not block and hide the pin, so that the key inserted into the key hole must pass through the pin or lock pin or piece pin, and at the same time, there is an extra slope from the pin on the top of the lock core to the inner top. In the gap at the top of the hole, there is a range that can be moved back and forth by contacting the pin or pin to adjust the safety tooth pitch to unlock the lock. The lock cylinder has an anti-drilling frame, which is installed in the phase groove on the periphery of the lock cylinder, and there is also an anti-drilling device in the middle of the keyhole. Shaft, but there is no anti-drilling device between the middle of the keyhole and the periphery, so that the thief can use the drill pin to destroy the lock cylinder

Patent No.: 200410079009.2 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 joint seam 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 post is more powerful to break the mandrel and separate the core sleeve, so that the thief can succeed.

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