Drum washing machine
AssigneeLG Electronics Inc.
InventorsJoohang Kang, Youngchan Ahn, Junggu Lee
Life of this patent
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Abstract
A drum washing machine includes an inner tub and a drive system coupled to the inner tub. The drive system includes a housing, a motor disposed on one side of the housing, a rotor shaft coupled to the motor and bearing-coupled to the housing, an output shaft bearing-coupled to the housing, and wherein at least part of the output shaft is disposed in the rotor shaft, a planetary gear set that a part of the planetary gear set is spline-coupled to the rotor shaft, and other part of the planetary gear set is spline-coupled to the output shaft, and an actuator moving the planetary gear set in a horizontal direction, wherein, the housing is integrally formed with the inner tub.
Claims20
A drum washing machine comprising:
- an inner tub that extends in a horizontal direction;
- and
- a drive system coupled to the inner tub, the drive system comprising:
- a housing that has an internal space and is integrally provided with the inner tub,
- a motor disposed at a side of the housing,
- a rotor shaft coupled to the motor and the housing,
- an output shaft coupled to the housing, at least a part of the output shaft being disposed in the rotor shaft,
- a planetary gear set disposed in the internal space of the housing, the planetary gear set comprising (i) a first portion coupled to the rotor shaft and (ii) a second portion coupled to the output shaft,
- an actuator configured to move the planetary gear set along the horizontal direction,
- a first bearing disposed in the internal space of the housing and disposed between an outer surface of the output shaft and an inner surface of the housing, and
- a second bearing disposed in the internal space of the housing and disposed between an outer surface of the rotor shaft and the inner surface of the housing, the second bearing rotatably coupling the rotor shaft to the inner surface of the housing.
A drum washing machine comprising:
- an inner tub that extends in a horizontal direction;
- and
- a drive system coupled to the inner tub, the drive system comprising:
- a housing that has an internal space,
- a motor disposed at one side of the housing,
- a rotor shaft coupled to the motor and the housing,
- an output shaft coupled to the housing, at least a part of the output shaft being disposed in the rotor shaft,
- a planetary gear set disposed in the internal space of the housing, the planetary gear set comprising (i) a first portion coupled to the rotor shaft and (ii) a second portion coupled to the output shaft,
- an actuator configured to move the planetary gear set along the horizontal direction,
- a first bearing disposed in the internal space of the housing and disposed between an outer surface of the output shaft and an inner surface of the housing, and
- a second bearing disposed in the internal space of the housing and disposed between an outer surface of the rotor shaft and the inner surface of the housing, the second bearing rotatably coupling the rotor shaft to the inner surface of the housing,
- wherein an entirety of the planetary gear overlaps with the inner tub in a vertical direction orthogonal to the horizontal direction.
Dependencies are inferred from the claim text.