Burglarproof self-locking device and corresponding lock seat for security door lock

Abstract

The invention relates to the technical field of prevention of burglary of door locks and discloses a burglarproof self-locking device for a security door lock. The burglarproof self-locking device forthe security door lock comprises a shell. A movable sleeve is welded between the inner left wall and the inner right wall of the shell. A resetting sprig is stuck to the inner left wall of the movable sleeve. An inserting bolt is stuck to the right side of the resetting spring. A cambered surface is arranged in the position of the inserting head of the inserting bolt. According to the burglarproof self-locking device for the security door lock and a corresponding lock seat, a gear is installed in the portion, located at the top of the movable sleeve, on the outer side of the lock core. According to the burglarproof device for the security door lock, a storage groove and a movement groove are formed in the inserting bolt; when the door is locked, the inserting bolt is inserted into a fixing groove; as is shown in figure 6, a second iron block is attracted by a second magnet to drag a push rod to move rightwards, the push rod breaks away from the inserting groove, a clamping rod loses limitation, slides downwards under the influence of gravity and is inserted into a clamping groove, and the inserting bolt is locked; the lock is prevented from being prised by people through utilizingsimple tools; and security is improved, and the possibility of being stolen is lowered.

Description

technical field [0001] The invention relates to the field of door lock anti-theft technology, in particular to an anti-theft self-locking device for an anti-theft door lock and a corresponding lock seat. Background technique [0002] In order to facilitate the closing of the door, the current door locks set the plug of the plug into a curved surface, so that when the door is closed, the plug is pressed into the movable sleeve by the pressure of the lock seat, and when the plug moves to the fixed groove, it is reset The spring pushes out the bolt, inserts it into the fixing slot, and locks the door. [0003] But in this way, while it is convenient to lock the door, there is also a great potential safety hazard. Some unscrupulous personnel only need to use some simple tools to penetrate from the door gap, hook the plug of the plug, and use the curved surface to press the plug into the movable door. Inside the cover, slide out the fixing groove and open the door. Such a door l...

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Problems solved by technology

[0003] But in this way, while it is convenient to lock the door, there is also a great potential safety hazard. Some unscrupulous personnel only need to use some simple tools to penetrate from the door gap, hook the plug of the plug, and use the curved surface to press the plug into the movable door. Inside the cover, slide out the fixing groove and open the door. Such a door lock is easy to be opened, and the safety is low, which increases the possibility of theft. Therefore, we propose an anti-theft self-locking device for an anti-theft door lock and the corresponding lock seat

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