Washing machine

A wobbling device of a washing machines, the washing machine including a spin-drying tub rotatably set in a tub to contain clothes, a drive motor to provide a rotating force, and a rotating shaft to transfer the rotating force of the drive motor to the wobbling device, the wobbling device comprising:

• at a bottom portion of the spin-drying tub;
• a first rotary unit to rotate in response to torque of the rotating shaft, having a first sloping surface inclined in a radial direction of the rotating shaft;
• a second rotary unit to rotate relative to the first rotary unit, having a second sloping surface that corresponds to the first sloping surface and a hole axially formed in the second rotary unit at a set angle of inclination;
• an inclined rotary shaft, rotatably arranged in the hole, to project from an upper end surface of the second rotary unit;
• an actuating pin which is installed to and rotates along with one of the inclined rotary shaft, the rotating shaft and the first rotary unit;
• and
• wobbling and leveling pins provided on the second rotary unit at positions corresponding to rotating directions of the actuating pin, such that the washboard wobbles in response to a rotation of the actuating pin when the actuating pin contacts the wobbling pin, and such that the washboard is level when the actuating pin contacts the leveling pin, wherein
• the wobbling device levels the washboard and rotates the spin drying tub in response to the rotating shaft being rotated in one direction, and wobbles the washboard upward and downward to wash the clothes in response to the rotating shaft being rotated in another direction.

A wobbling device of a washing machine, the washing machine including a spin-drying tub rotatably set in a tub to contain clothes, a drive motor to provide a rotating force, and a rotating shaft to tansfer the rotating force of the drive motor to the wobbling device, the wobbling device comprising:

• a washboard are to be set at a bottom portion of the spin-drying tub;
• first rotary unit to rotate in response to torque of the rotating shaft, having a first sloping surface inclined in a radial direction of the rotating shaft at an angle of inclination;
• a second rotary unit to rotate relative to the first rotary unit, having a second sloping surface that corresponds to the first sloping surface and a hole axially formed in the second rotary unit at a set angle of inclination;
• an inclined rotary shaft, rotatably arranged in the hole, to project from an upper end surface of the second rotary unit;
• an actuating pin which is installed to and rotates along with one of the inclined rotary shaft, the rotating shaft and the first rotary unit;
• and
• wobbling and leveling pins provided on the second rotary unit at positions corresponding to rotating directions of the actuating pin, such that the washboard wobbles in response to a rotation of the actuating pin when the actuating pin contacts the wobbling pin, and such that the washboard is level when the actuating pin contacts the leveling pin, wherein the wobbling device levels the washboard and rotates the spin drying tub in response to the rotating shaft being rotated in one direction, and moves the washboard upward and downward to wash the clothes in response to the rotating shaft being rotated in another direction.

A wobbling device of a washing machine, including a spin-drying tub rotatably set in a tub to contain clothes, a drive motor to provide a rotating force, and a rotating shaft to transfer the rotating force of the drive motor to the wobbling device, the wobbling device comprising:

• a washboard on which clothes are to be set at a bottom portion of the spin-drying tub;
• a first rotary unit to rotate in response to torque of the rotating shaft, having a first sloping surface inclined in a radial direction of the rotating shaft;
• a second rotary unit to rotate relative to the first rotary unit, having a second sloping surface that corresponds to the first sloping surface and a hole axially formed in the second rotary unit at a set angle of inclination;
• an inclined rotary shaft, rotatably arranged in the hole, to project from an upper end surface of the second rotary unit;
• an actuating pin which is installed to and rotates along with one of the inclined rotary shaft, the rotating shaft and the first rotary unit;
• and
• wobbling and leveling pins provided on the second rotary unit at positions corresponding to rotating directions of the actuating pin, such that the washboard wobbles in response to a rotation of the actuating pin when the actuating pin contacts the wobbling pin in accordance with the rotating shaft rotating in a first direction, and such that the washboard is level when the actuating pin contacts the leveling pin in accordance with the rotating shaft rotating in a second direction, wherein when the washboard wobbles, clothes set thereon are moved in vertical directions.

A wobbling device of a washing machine, the washing machine including a spin-drying tub rotatably set in a tub to contain clothes, a drive motor to provide a rotating force, and a rotating shaft to transfer the rotating force of the drive motor to the wobbling device, the wobbling device comprising:

• a washboard at a bottom portion of the spin-drying tub;
• a first rotary unit to rotate in response to torque of the rotating shaft, having a first sloping surface inclined in a radial direction of the rotating shaft;
• a second rotary unit to rotate relative to the first rotary unit, having a second sloping surface that corresponds to the first sloping surface and a hole axially formed in the second rotary unit at a set angle of inclination;
• an inclined rotary shaft, rotatably arranged in the hole, to project from an upper end surface of the second rotary unit;
• an actuating pin which is installed to and rotates along with one of the inclined rotary shaft, the rotating shaft and the first rotary unit;
• and
• wobbling and leveling pins provided on the second rotary unit at positions corresponding to rotating directions of the actuating pin, such that the washboard wobbles in response to a rotation of the actuating pin when the actuating pin contacts the wobbling pin in accordance with the rotating shaft rotating in a first direction, and such that the washboard is level when the actuating pin contacts the leveling pin in accordance with the rotating shaft rotating in a second direction.

An apparatus for producing a wobbling motion of a washboard in a washing machine, comprising:

• a first rotary unit having a first longitudinal axis, said first rotary unit including a first distal end and a second distal end disposed on respective opposite ends of said first longitudinal axis, said second distal end receiving a rotational force to thereby rotate said first rotary unit about said first longitudinal axis, said first distal end having a first inclined surface that forms a sloped plane, said sloped plane forming an incline angle with respect to an imaginary reference plane perpendicular to said first longitudinal axis;
• a second rotary unit having a second longitudinal axis, a third distal end and a fourth distal end, said third and fourth distal ends being disposed on respective opposite ends of said second longitudinal axis, said third distal end having a second inclined surface, said second inclined surface maintaining an opposing contact with said first inclined surface;
• a rotary shaft protruding outwardly from said first inclined surface, said rotary shaft being fixedly coupled to said first rotary unit, and moving together therewith when said first rotary unit is rotated, said rotary shaft penetrating said second inclined surface, and extending into said second rotary unit from said third distal end towards said fourth distal end, said rotary shaft being having a free movement relative to, and independent of, said second rotary unit;
• and
• an actuating unit, having at least a portion thereof coupled to said rotary shaft, arranged to cause said rotary shaft and second rotary unit to move together as one unit, by limiting said free movement of said rotary shaft relative to said secondary rotary unit when said first inclined surface and said second inclined surface oppose each other in a first orientation to form a wobble angle between said first longitudinal axis and
• said second longitudinal axis, so as to cause said washboard disposed on said second rotary unit to be tilted with respect to said first longitudinal axis, to thereby produce said wobbling motion of said washboard.