WASHING MACHINE

摘要

Disclosed is a washing machine comprising a main body defining an outer appearance, a tub disposed within the main body, a main drum rotatably mounted in the tub, a sub drum mounted inside the main drum to be relatively rotatable with respect to the main drum, an outer shaft for rotating the main drum, an inner shaft for rotating the sub drum and disposed inside the outer shaft, and a driving motor. The driving motor has a stator, an outer rotor connected to the inner shaft and disposed outside the stator and, an inner rotor connected to the outer shaft and disposed inside the stator, wherein the driving motor is configured to rotate the main drum and the sub drum in different directions and/or with different rotational speeds.