Drum rotating device and laundry care apparatus including same
AssigneeLG Electronics Inc.
InventorsYoung Chan AHN, Jeongyong SONG, Jung Gu LEE
Life of this patent
Estimating the term…
Abstract
A drum rotating device of a laundry care apparatus includes a drum shaft coupled to a drum, and a motor including a stator and a rotor that rotates relative to the stator. A gear assembly transmits rotational force of the rotor to the drum shaft A carrier constituting the gear assembly and the drum shaft is coupled to each other in a first area. A sun gear, a ring gear (RG), and pinion gears constituting the gear assembly are engaged with each other and rotate in a second area spaced apart from the first area based on the axial direction of the drum shaft.
Claims30
A drum rotating device comprising:
- a drum shaft coupled to a drum;
- a motor comprising a stator and a rotor that rotates relative to the stator;
- a gear assembly that transmits rotational force of the rotor to the drum shaft;
- and
- a clutch that moves in an axial direction of the drum shaft and adjusts shifting of the gear assembly, wherein the gear assembly comprises:
- a sun gear connected to the rotor;
- a carrier that is connected to the drum shaft and rotates together with the drum shaft;
- a ring gear that surrounds the sun gear and is engaged with the clutch to rotate together with the clutch;
- and
- a plurality of pinion gears that is engaged with each of the sun gear and the ring gear and is rotatably supported by the carrier,
- wherein the carrier and the drum shaft are coupled to each other in a first area, and
- wherein the sun gear, the ring gear and the pinion gears are engaged with each other and rotate in a second area spaced apart from the first area based on the axial direction.
A drum rotating device comprising:
- a drum shaft coupled to a drum;
- a motor comprising a stator and a rotor that rotates relative to the stator;
- a gear assembly that transmits rotational force of the motor to the drum shaft;
- and
- a clutch that moves in an axial direction of the drum shaft and adjusts shifting of the gear assembly, wherein the gear assembly comprises:
- a sun gear connected to the rotor;
- a carrier that is connected to the drum shaft and rotates together with the drum shaft;
- a ring gear that surrounds the sun gear and is engaged with the clutch to rotate together with the clutch;
- and
- a plurality of pinion gears that is engaged with each of the sun gear and the ring gear and is rotatably supported by the carrier,
- wherein the rotor is provided with a coupling unit that is coupled to the sun gear and rotates together with the sun gear, and
- wherein a portion of the ring gear is disposed between the coupling unit and the sun gear based on a radial direction of the sun gear.
A drum rotating device comprising:
- a drum shaft coupled to a drum;
- a motor comprising a stator and a rotor that rotates relative to the stator;
- a gear assembly that transmits rotational force of the rotor to the drum shaft;
- and
- a clutch that moves in an axial direction of the drum shaft and adjusts shifting of the gear assembly, wherein the gear assembly comprises:
- a sun gear connected to the rotor;
- a carrier that is connected to the drum shaft and rotates together with the drum shaft;
- a ring gear that surrounds the sun gear and is engaged with the clutch to rotate together with the clutch;
- and
- a plurality of pinion gears that is engaged with each of the sun gear and the ring gear and is rotatably supported by the carrier,
- wherein the sun gear, the ring gear, the pinion gears, and the clutch have an overlapping area formed by overlapping each other in a radial direction of the gear assembly, and
- wherein an output part of the carrier connected to the drum shaft is disposed at a position outside the overlapping area.
Dependencies are inferred from the claim text.