Door lock with anti-card-inserting device

Abstract

The invention discloses a door lock with an anti-card-inserting device. The door lock with the anti-card-inserting device comprises a lock body; a panel is arranged on one side of the lock body, a movable lock-tongue stretching out of the panel is arranged on the lock body, and an ejector rod, a lever and a push plate located below the movable lock-tongue is arranged in the lock body; the middle of the ejector rod is rotatably arranged on a rotary shaft fixed in the lock body, the lever is arranged below the ejector rod, and the push plate is horizontally arranged below the lever; the lower end of the lever is connected with the push plate, the upper end of the lever is connected with the ejector rod, and a first torsional spring is arranged on the rotary shaft in a sleeving mode; the movable end of the first torsional spring is pressed on the upper side face of the right end of the ejector rod so as to enable the left end of the ejector rod to cock to withstand the movable lock-tongue, and the right end of the ejector rod is connected with a door handle torsional block; and the push plate is connected with a second torsional spring, the second torsional spring enables the left end of the push plate to keep on stretching out to the panel and push the left end of the ejector rod to drop down with the help of the lever, and torsion of the second torsional spring is larger than that of the first torsional spring.

Description

technical field [0001] The invention relates to the technical field of door locks, in particular to a door lock with a card insertion prevention device. Background technique [0002] Door lock is an indispensable anti-theft tool in people's daily life. The movable deadbolt head of the commonly used door lock is an inclined plane. It can be inserted through the door gap to push back the movable deadbolt, and then burglary, there is a great security risk, so it is urgent to develop a door lock with an anti-card device to prevent the soft card from being inserted and push the movable deadbolt away, so as to improve the security of the door lock. Anti-theft performance. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides a door lock with an anti-card insertion device, which is simple in structure, reliable and easy to use, and has strong anti-theft performance. [0004] The technical solution adopted by the presen...

AI Technical Summary

Problems solved by technology

[0002] Door lock is an indispensable anti-theft tool in people's daily life. The movable deadbolt head of the commonly used door lock is an inclined plane. It can be inserted through the door gap to push back the movable deadbolt, and then burglary, there is a great security risk, so it is urgent to develop a door lock with an anti-card device to prevent the soft card from being inserted and push the movable deadbolt away, so as to improve the security of the door lock. Anti-theft performance

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