Washing machine
Disclosed herein is a washing machine. The washing machine includes a main body having a laundry inlet on a front surface portion of the main body, a tub provided inside the main body for storing washing water, a drum rotatably provided in the tub, a pulsator provided inside the drum and configured to be rotated separately from the drum, and a driving device configured to provide power to the drum and the pulsator, wherein no extra structure is mounted on the inner surface of the drum.
1. A washing machine comprising:
a main body having a laundry inlet on a front surface portion of the main body;
a tub provided inside the main body to store washing water;
a drum rotatably provided in the tub;
a pulsator disposed inside the drum and configured to be rotated separately from the drum; and
a driving device configured to provide power to the drum and the pulsator, the drive device comprising:
a first driving shaft connected to the drum and rotatably supported by a first bearing and a second bearing, the first bearing and the second bearing fixed to the tub, and
a second driving shaft connected to the pulsator and rotatably supported by a first sleeve bearing fixed to an upper inner circumferential surface of the first driving shaft and a second sleeve bearing fixed to a lower inner circumferential surface of the first driving shaft,
wherein no extra structure is mounted on an inner surface of the drum.
2. The washing machine of claim 1 , wherein the drum comprises a plurality of through holes continuously formed along a circumferential surface thereof.
3. The washing machine of claim 1 , wherein the drum and the pulsator have different rotating directions.
4. The washing machine of claim 1 , wherein the driving device comprises:
an annular stator,
a first rotor rotating inside the annular stator and connected to the first drive shaft, and
a second rotor rotating outside the annular stator and connected to the second drive shaft.