Locking-type glass door lock

Abstract

The invention discloses a locking-type glass door lock. An upper swing arm, a lower swing arm, a convex hook and a convex limiting column are arranged on a torsion wheel; the upper swing arm and the lower swing arm are symmetric to each other; a first tension spring resetting device is arranged behind the lower part of the upper swing arm; a second tension spring resetting device is arranged above the lower swing arm; a guide groove and a positioning column are arranged at the upper part of a sliding block; the positioning column of the sliding block is in matched superposed contact with a positioning column of a positioning rod; a fixed hole in the front end of the positioning rod is movably connected with a fixed column of a lock body; an arc-shaped collision area of the positioning rod is in sliding contact with a lock liner boss; a spring resetting device is arranged between the positioning rod and the surrounding edge of the lock body; the guide groove in the upper part of the sliding block is slidably connected with the positioning column of the lock body; a slider is arranged at the rear end of the sliding block and is in sliding contact connection with the convex hook of the torsion wheel; a spring resetting device is further arranged at the lower part of the sliding block. According to the door lock, the degree of friction probably formed between a shaft of the torsion wheel and a matched shaft hole can be minimized, the service life of the door lock is greatly prolonged, the locking firmness of the door lock can be greatly improved, and therefore the burglary prevention capacity of the door lock is improved.

Description

technical field [0001] The invention relates to the technical field of glass door locks, in particular to a locking type glass door lock. Background technique [0002] This kind of glass door lock is widely used in anti-theft locks in public places, and it has the functions of lock in, lock out and lock out. This kind of lock has a purely mechanical structure and is usually used in public places, resulting in very frequent opening and closing of the lock. The torsion wheel of the glass door lock only uses a pressure spring or tension spring for resetting the torsion wheel. Under the action of force, the shaft of the torsion wheel and the shaft hole are eccentric and severely worn and elliptical, and the spring will also fatigue and break in advance. Time Since the force point of the tension spring is concentrated on the apex of the shackle at both ends of the spring, at this time, friction caused by tension will occur between the spring fixing column on the torsion wheel an...

AI Technical Summary

Problems solved by technology

After the lock is locked, when the lock tongue is impacted by a large external force, the strength will be poor, and the positioning post will be deformed and broken. When the external pressure applied to the lock tongue is greater than the moving pressure set by the positioning rod spring, the positioning post of the positioning rod will It will suddenly break away from the slider positioning column that has been stacked together, thus losing the anti-theft function of locking

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