Door lock with controllable reverse lifting function

Abstract

The invention belongs to the technical field of door locks, and particularly relates to a door lock with a controllable reverse lifting function. The door lock with the controllable reverse lifting function comprises a shell body, a latch bolt, a dead bolt, a latch bolt driving piece which is used for driving the latch bolt to move and a dead bolt driving piece which is used for driving the dead bolt to move, the latch bolt driving piece can control the dead bolt driving piece to rotate through reverse rotation and drive the dead bolt to stretch out of the shell body, a reverse lifting controlassembly capable of limiting reverse rotation of the latch bolt driving piece is arranged in the shell body, the reverse lifting control assembly comprises a driving switch capable of moving up and down and a rotatable locking piece, the driving switch drives the locking piece to rotate through up-down movement, a lock hook is formed on the locking piece, a limiting shaft capable of being hookedby the lock hook is formed on the latch bolt driving piece, a positioning piece capable of extending outwards and a spring which abuts against the positioning piece are arranged in the drive switch, the spring enables the positioning piece to have trend of extending out of the driving switch, and a positioning through hole allowing the positioning piece to be embedded therein is formed in one endof the shell body. The door lock can achieve stable control over the reverse lifting function.

Description

technical field [0001] The invention belongs to the technical field of door locks, and relates to a door lock capable of controlling the lifting function. Background technique [0002] As a device for locking the door of a house, the door lock can protect the safety of the user's life and property. For this purpose, the existing door locks often have an anti-lock function, and the user can lock the door by turning the key outdoors. In order to make the anti-lock function more convenient, some door locks will also add an anti-lift function. The user only needs to turn the handle on the door in the opposite direction to realize the anti-lock of the door. [0003] Because after the door is back locked, the door lock must be opened by a key, so in some specific cases, the anti-lifting function of the door lock will also cause a lot of inconvenience to the user. If the user turns the handle in the opposite direction to lock the door but forgets to bring the key when going out, t...

AI Technical Summary

Problems solved by technology

However, there is no structure for positioning the transmission disc in the adjustment mechanism, and the state of the transmission disc when restricting the reverse rotation of the transmission shaft cannot be kept stable, that is, the user cannot stably and accurately control the anti-lifting function of the lock body

For example, when the user needs to close the anti-lift function of the lock body, but the transmission plate in the lock body is shifted due to the la

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