Security door lock

Abstract

The invention belongs to the technical field of door locks, and particularly relates to a security door lock. The security door lock comprises a lock shell, a rotating column and a password button. The front end surface of the lock shell is fixedly connected with a core column close to the lower right corner position of the lock shell. The front end surface of the core column is rotatably connected with the rotating column at the axial position of the core column. The front end surface of the rotating column is provided with an insertion hole. A key is inserted into the insertion hole. The outer cambered surface of the rotating column is provided with uniformly distributed through holes over the rotating column. Sliding holes are formed in the inner cambered surfaces of the core column andare located at through hole positions. First sliding columns are slidably connected to the interiors of the sliding holes up and down. Second sliding columns are slidably connected to the interiors of the through holes. The front end surface of the lock shell is provided with uniformly distributed password buttons on the upper right position of the core column. By means of the security door lock,the cost of door lock breaking and dismantling is effectively avoided. The security door lock is simple in structure and high in practicability, does not need electric power, is wide in application range, and is suitable for requirements of different environments.

Description

Technical field [0001] The invention belongs to the technical field of door locks, and specifically is a security door lock. Background technique [0002] A door lock is a device used to lock the door to prevent others from opening the door. This device may be mechanical or electric. Electricity requires electricity. [0003] There are many types of door locks, and the requirements for door locks are different in various occasions. Ordinary households generally use anti-theft door locks, which are high in security and relatively cheap; in some high-end places and security agencies, password locks and fingerprint locks are used for security. Very high and expensive; glass doors are used in many public places, so glass door locks will be widely used. [0004] In the prior art, the smart security door lock industry is not very standardized, and there are many problems. Because it is an electronic door lock, such electronic security door locks cannot function when there is a power outag...

AI Technical Summary

Problems solved by technology

[0006] In order to make up for the deficiencies of the existing technology and solve the existing technology, the intelligent security door lock industry is not very standardized, and there are many problems. It cannot function and seriously affects the normal entry and exit of the user, and the security door lock with a single special key is easy to lose the key. Low safety factor and other issues, the present invention proposes a security door lock

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