Multifunctional safety door lock

Abstract

The invention discloses a multifunctional safety door lock. A driven gear and a stop gear disc for locking the rotation, which are integrated in the axial direction, are installed in an outer shell, a locking device is perpendicularly arranged above the stop gear disc, an upper toothed column and a lower toothed column of the locking device are engaged with each other in the axial direction, the lower top end of the lower toothed column is matched with a wheel toothed groove of the stop gear disc, a pressure cap at the top end of the upper toothed column stretches out to be above a limiting sleeve, a ringing bell cavity is formed between a baffle plate and a positioning plate, a ringing bell is installed in the ringing bell cavity, a falciform rack which is linked with a lock pin is engaged with the driven gear, the free end of the lock pin can rotate up and down, after the lock pin rotates downwards to push against the floor, the opening of a door body is locked, and a door opening warning effect and an antitheft effect can be realized when the door is opened; when the lock pin forms a right angle together with the positioning plate, the lock pin and a wall door stopper seat attract each other to position the door body, and the door body is prevented from being forcibly closed by the wind.

Description

technical field [0001] The invention relates to an anti-lock device for a room door, in particular to a multifunctional safety door lock. Background technique [0002] The commonly used room door locks include mechanical locks and electronic locks. Electronic locks are generally used in hotel room doors. At present, in the implementation of interior door locks in private houses, anti-lock devices are not provided substantially, and outsiders easily enter the room. However, there is no anti-lock device with better safety performance that is suitable for the use of private house interior doors. For hotels where the environment is relatively complicated, some hotels do not have an inner door anti-lock device, so it is difficult to guarantee the safety of the guests' belongings in the room. Although some hotel room doors are equipped with a reverse latch as a safety device, it is not very Durable, and there is no alarm prompt, and the insurance effect is not very satisfactory. ...

AI Technical Summary

Problems solved by technology

At present, in the implementation of internal door locks in residential houses, there is basically no anti-locking device, and outsiders can easily enter the room. However, there is currently no anti-locking device with better safety performance that is suitable for the use of internal doors in residential houses.

For hotels where the environment is relatively complicated, some hotels do not have an inner door anti-lock device, and it is difficult to guarantee the safety of guests’ belongings in the room. Although some hotel room doors are equipped with a reverse latch as a safety device, it is not very Durable, and there is no alarm prompt, the insurance effect is not very satisfactory

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