a door lock

Abstract

The present invention relates to mechanical locks, and provides a door lock core assembly, comprising a tubular casing, a lock cylinder, and a drive spindle. A cylindrical lock cylinder cavity is provided within the tubular casing, and the cylindrical lock cylinder is disposed within the lock cylinder cavity. A rectangular password block cavity is provided within the lock cylinder. A password block is placed within the password block cavity and can move forward or backward along the same. The password block is a rectangular plate structure, and has a sliding block distributed with multiple pairs of beads at an interior portion thereof, and a lock pin at a front end thereof. The password block has a card slot therein. When a perforated card is inserted into the card slot, and holes of the card match all pairs of the beads in the sliding block, the sliding block can be pushed forward by using the perforated card to drive the lock pin. A spring cavity is provided in front of the password block cavity, and a spring is provided therein. A middle portion of the tubular casing has a door locking portion, and a middle portion of the door locking portion has an overlapping circular lock cylinder opening and rectangular password block opening. The password block is capable of entering or exiting the rectangular password block opening to lock or unlock the lock cylinder. The present invention has essential characteristics of enhanced security, convenient portability of keys, and easy lock replacement.

Description

technical field [0001] The present invention relates to mechanical locks, in particular to door lock cylinders for house door locks. Background technique [0002] Locks are widely used in daily life. Existing locks are roughly divided into two categories: mechanical locks and electronic locks, and mechanical locks are divided into ordinary mechanical locks and password mechanical locks. [0003] Ordinary mechanical locks are cheap to manufacture and are the most widely used, but their security is poor, the key is easy to be copied, the key is thick and heavy, and it is very inconvenient to wear it when going out. In addition, when the mechanical lock door lock needs to be replaced, it is usually necessary to replace the whole or replace the lock cylinder, which is troublesome. [0004] The password mechanical lock does not need to wear a key, but the password must be remembered. Nowadays, people have too many passwords to remember, which is easy to confuse. [0005] Compa...

AI Technical Summary

Problems solved by technology

[0003] Ordinary mechanical locks are cheap to manufacture and are the most widely used, but their security is poor, the key is easy to be copied, the key is thick and heavy, and it is inconvenient to carry it around when going out

In addition, when the mechanical lock door lock needs to be replaced, it usually needs to be replaced as a whole or the lock cylinder, which is troublesome.

[0004] Password mechanical lock does not need to wear a key, but you must remember the password. Nowadays, people have too many passwords to remember, which is easy to confuse

[0005] The security of electronic locks is higher than that of mechanical locks, but it needs to set up a special decoding circuit. The manufacture of the lock is more complicated and the cost is also high. Due to the use of large-scale integrated circuits, it is prone to failure

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