US 2003/0154749 A1 · Washing machine

Abstract

A washing machine includes a wobbling device having a rotary blade. The wobbling device causes a wobbling action of a washboard without rotating the washboard during a washing mode operation, and rotates the rotary blade in one direction to allow a sufficient amount of wash water to flow upward through an ascending water current guide and fall from an upper portion of a spin-drying tub onto clothes contained in the spin-drying tub, thus effectively washing the clothes. The washboard is installed at a lower portion in the spin-drying tub such that it wobbles upward and downward. The rotary blade is installed under the washboard, and is rotated in one direction by torque of a washing shaft. The rotary blade is fitted over a boss which couples a vertical rotary shaft of the wobbling device to the washing shaft, and is rotated by the torque of the washing shaft. The water current guide extends along a sidewall of the spin-drying tub from a lower end to an upper end of the spin-drying tub. Water currents generated from the rotary blade are guided to the upper portion of the spin-drying tub and fall from the upper portion to the lower portion of the spin-drying tub.

Claims25

Dependent claims

A washing machine comprising:

a washing tub to contain wash water therein;
a spin-drying tub rotatably set in the washing tub to contain clothes therein;
a spin-drying shaft which rotates the spin-drying tub;
a washing shaft which axially passes through and projects from a top end of the spin-drying shaft;
and
a wobbling device coupled to a projected end of the washing shaft, which causes the clothes to wobble upward and downward to wash the clothes, wherein the wobbling device comprises:
a washboard installed at an interior lower portion of the spin-drying tub, which wobbles upward and downward, and
a rotary blade provided under the washboard, which rotates in one direction by torque of the washing shaft to guide the wash water to an upper portion of the spin-drying tub.

5 more elements

A washing machine comprising:

a washing tub to contain wash water therein;
a spin-drying tub rotatably set in the washing tub to contain clothes therein;
a wobbling device having a washboard part for seating the clothes thereon and a rotary blade part provided at a bottom portion of the spin-drying tub;
a drive motor which provides a rotating force;
a rotating shaft which rotates and transfers the rotating force of the drive motor to the wobbling device, wherein the wobbling device levels the washboard and rotates the spin drying tub in response to rotating of the rotating shaft in one direction, and wobbles the washboard upward and downward to wash the clothes and rotates the rotary blade part to guide the wash water to an upper portion of the spin-drying tub in response to rotating of the rotating shaft in another direction.

2 more elements

Dependencies are inferred from the claim text.

Washing machine

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Washing machine

Life of this patent

Abstract

Claims25