Automatic door lock of washing machine

Abstract

The invention provides an automatic door lock of a washing machine. The automatic door lock comprises a rotation-type piezoelectric motor, wherein the rotation-type piezoelectric motor comprises a stator and a rotor; the inner side wall of the rotor is provided with internal threads; the rotor is provided with a lock tongue in a matching manner; the outer wall of the lock tongue is provided with outer threads matched with the inner threads of the rotor; one side of the stator is provided with an inductive switch; and an inductive end of the inductive switch is positioned at a port of the stator. The piezoelectric motor is adopted as a power source; the rotor of the piezoelectric motor is used as a lock cylinder of the automatic door lock simultaneously; the rotor is driven to do rotational movement in a positive direction and a negative direction by a vibration piece inside the rotor, so that screwing in or screwing out between the rotor and the lock tongue can be realized, and the purpose of opening or locking a cover of the washing machine can be achieved. The automatic door lock of the washing machine is simple in structure, and strong in resisting external force interference, and is capable of rapidly realizing automatic safe locking or opening of the cover of the washing machine.

Description

technical field [0001] The invention relates to the technical field of washing machines, in particular to an automatic door lock of a washing machine. [0002] Background technique [0003] At present, the existing washing machines on the market are all automatic washing machines controlled by the main control board. Most of them adopt centrifugal dehydration with high speed and large moment of inertia. security. On the one hand, it prevents the water and clothes in the washing machine from running out of the inner drum of the washing machine due to the opening of the machine cover during the washing process; on the other hand, it prevents the clothes from being thrown out during high-speed dehydration, or the danger caused by human contact with the rotating inner tub. [0004] At present, the machine cover door lock of the washing machine is mainly an automatic door lock device, which is mainly composed of an electromagnet or a bimetallic sheet, a slide block, a door latc...

AI Technical Summary

Problems solved by technology

However, due to the large size of the electromagnet door lock, and mainly relying on slide rails for positioning, the reliability is insufficient; while the bimetal door lock has a delay in opening the door, cannot be opened or closed quickly, and is a power consumption type. That is to say, the bimetal door lock consumes energy continuously during the working process, and it will be automatically unlocked after an abnormal power failure

The structures of these two kinds of automatic door lock devices are complex, there are many problems of unstable factors, and there are deficiencies in safety and reliability.

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