Doorknob with safety locking function

Abstract

The invention discloses a doorknob with a safety locking function, comprising a fixing disc, a shaft bushing, a spring and a spindle. The shaft bushing comprises a cap, a hollow tube and a positioning disc that are integrally connected from bottom to top, the upper surface of the positioning disc is provided with two symmetric rectangular ribs, the outer edge of each rib is out of the outer edge of the positioning disc, the cap is internally provided with a second square socket, the spindle is disposed in the shaft bushing and comprises a middle circular shaft and square shafts on two sides, the square shaft on one side resides in the second square socket with the top end lower than the top end of the second square socket, the square shaft on the other side passes through the fixing disc and extends into a rotary disc, the fixing disc comprises a lower disc and an upper disc that are concentric, the upper disc has a hollow inside provided with a spring, the center of an upper wall of the upper disc is provided with an upper through hole, two symmetrically arranged square holes are in communication with the outer edge of the upper through hole. The doorknob with the safety locking function can prevent people outside from unlocking a door lock with an unlocking tool through a door viewer hole and breaking the house for burglary.

Description

technical field [0001] The invention relates to the technical field of household door handles, in particular to a door handle with a safety lock function. Background technique [0002] Now the anti-theft doors of many families are equipped with peepholes, which are convenient for the owner to observe the situation outside the door, but unexpectedly this has become a loophole for thieves to burglary. Thieves use the cat's eye peeping mirror to check the interior decoration and personnel situation, and then unscrew the cat's eye insertion tool to open the anti-theft door. That is to say, someone can successfully open the anti-theft door in less than two minutes through the peephole. At present, most of the door handles used on the market are one for the inside and one for the inside and outside, and are used in pairs. The outside door handle can only be turned when the lock is opened to effectively open the entry door; In this state, the door can be opened by turning it. The...

AI Technical Summary

Problems solved by technology

The second is to consider convenience, if the door lock that is opened from the inside to the outside is also designed as a form that is opened from the outside to the inside, every time the user has to unlock the door first through the key, etc., and then open the door, it will waste a lot of time and bring serious problems. big inconvenience

In view of these two reasons, the door lock is designed in the above-mentioned opening form, which increases the risk

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