Door lock inner handle anti-theft structure

Abstract

The invention relates to structures of anti-theft door locks and provides a door lock inner handle anti-theft structure which can enhance the anti-theft function while quick opening is ensured. According to the technical scheme, the door lock inner handle anti-theft structure is provided with a rear handle sleeve, a square core reset spring, a square core rotating piece, an ejecting pipe, a square core, two handle pins, a rear handle and a rear handle button. A first handle cavity and a second handle cavity are formed in one end of the rear handle, a rear handle button and the ejecting pipe are embedded in the second handle cavity, and the rear handle sleeve and the square core rotating piece are embedded in the first handle cavity. The rear handle sleeve and the square core rotating piece are separated through the square core reset spring, the handle is made to idle to achieve the anti-theft function, the rear handle button is pressed, unlocking can be achieved as long as the rear handle sleeve and the square core rotating piece are clamped through the ejecting pipe, and the door lock inner handle anti-theft structure is easy and convenient to use and reliable in anti-theft performance.

Description

technical field [0001] The invention relates to the structure of an anti-theft door lock, in particular to the anti-theft structure of the inner handle of the door lock. technical background [0002] At present, the most commonly used mechanical anti-theft door lock is to turn the key outside the door to bring out the dead bolt (anti-theft bolt), and the person inside the door must also use the key to turn and retract the dead bolt to open the door if he wants to go out. Such a door lock It cannot be realized to open quickly in an emergency. In order to ensure rapid opening and safe escape in emergency situations, anti-theft locks with escape function are basically used on home anti-theft doors, especially electronic anti-theft locks, which can realize quick locking and quick opening. Quick lock means that the resident lifts the outer handle upwards outside the door after going out, so that the dead tongue of the lock body can be extended to lock, and it is not necessary to...

AI Technical Summary

Problems solved by technology

This method has two disadvantages: one is that it is inconvenient to use, and the user has to do two actions to open the door, first pressing the button and then turning the handle, which is more troublesome than the traditional way of opening the door; the other is that there is a greater potential safety hazard. Opening the door and going out depends on the circuit to control the clutch action, and once a fire occurs or other reasons cause a circuit failure, it will cause people to be unable to open the door and go out from the house, which is likely to cause serious safety accidents. This is a very serious design flaw.

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