Multifunctional security door lock

Abstract

The invention discloses a multifunctional security door lock which comprises a lock body, a key and a lock cylinder. The lock cylinder is disposed in the lock body. The key is inserted into the lock cylinder. An oblique spring bolt and a main spring bolt are respectively disposed on the upper portion and the lower portion in the lock body. A lock cylinder outer wheel is connected with the main spring bolt. The part, in the lock body, of the main spring bolt is provided with upper teeth and lower teeth. A first electromagnet is disposed above the upper teeth of the main spring bolt. The lock cylinder outer wheel is meshed with the lower teeth of the main spring bolt. A lock cylinder body is fixedly nested into the central hole of the lock cylinder outer wheel. Two locking jaws are disposed on two sides of the gear of the lock cylinder outer wheel. The lock cylinder comprises a lock head, the lock cylinder body and a positioning pin. The lock cylinder body comprises a front lock cylinder body, a rear lock cylinder body, a clamp ring and an axial tumbler. The key comprises a key stem, a key ring, a key column and a saw-tooth section. A lock protector is disposed on a door panel and comprises a shell, a movable plate and a crank mechanism. A small circular hole is formed in the shell and matched with the key ring. The multifunctional security door lock is simple in structure, low in cost, convenient to mount, and applicable to various security doors.

Description

technical field [0001] The invention relates to a door lock, in particular to a multifunctional anti-theft door lock. Background technique [0002] With people's increasing attention to property safety and the development of the machinery industry, the lock has developed from a traditional single-function mechanical lock to a multi-functional anti-theft lock, which has continuously improved the safety performance and anti-theft performance of the lock, but some indoor property still often occurs The reason for the theft or damage of the lock cylinder is that the residents think that people are safe at home and forget to lock the door or forget to lock the door when they go out, or the lock cylinder is exposed to thieves or pranksters. Or the lock cylinder has a simple structure and is easy to be picked open. [0003] Although some new anti-theft locks have also appeared on the market in recent years, such as: [0004] Regarding the new lock cylinder, the patent CN 20122047...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems and the defects existing in each patent, and to solve the insufficient function of the prior art, the present invention provides a multifunctional anti-theft door lock, which overcomes the defects of insufficient anti-theft function and inconvenient use of the existing anti-theft door locks

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