Opening and closing device of upper cover of washing machine and washing machine

Abstract

The invention discloses an opening and closing device of an upper cover of a washing machine and the washing machine. The opening and closing device comprises a control device and a telescopic mechanism, wherein a lever is formed on the upper cover and can rotate around a rotating shaft, and the telescopic mechanism is connected with one end of the lever and can drive the lever to rotate under the control of the control device, so that the upper cover is opened and closed. According to the opening and closing device of the upper cover of the washing machine, the upper cover of the washing machine is opened and closed by the aid of a nut-screw transmission structure, the fixed transmission ratio can be set for the nut-screw transmission structure usually, so that the upper cover of the washing machine has the stable movement speed at any angle during opening or closing, and opening and closing stability and reliability of the upper cover are guaranteed.

Description

technical field [0001] The invention relates to the field of washing machines, in particular to an opening and closing device for an upper cover of a washing machine and the washing machine. Background technique [0002] Most of the washing machines on the market, especially the pulsator washing machines, require manual operation by the user to open and close the upper cover. In the ordinary washing process, the upper cover of the washing machine is usually opened by hand first, then clothes and washing liquid are added, then the upper cover is closed to start the washing machine program, and the upper cover is opened after washing to take out the clothes. [0003] Chinese Patent Document Publication No. CN102720042A discloses an automatic opening mechanism for the upper cover of a washing machine, which is characterized in that it at least includes a set of rotating shafts, a spring column, a locking contact body, a stretching motor, and a non-return stopper. The automatic...

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Problems solved by technology

[0004] The above-mentioned patent uses the motor to drive the rotating shaft to release the lock tongue to make the spring expand and contract to automatically open the upper cover of the washing machine. However, since this automatic opening mechanism uses a spring to automatically open the upper cover of the washing machine, a certain impact force will be generated during the opening of the upper cover. Destroying the stability of the connection between the upper cover and the washing machine box, and the above mechanism can only realize the automatic opening of the washing machine upper cover but not the automatic closing of the washing machine upper cover

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