Patent ID: 7316134

Claim:
A washing machine, comprising: a washing shaft; and a wobbling unit mounted to the washing shaft so as to wash laundry by a wobbling operation, wherein the wobbling unit comprises: an inclined rotating shaft to form a predetermined angle with a longitudinal axis of the washing shaft; a first rotary member rotating along with the washing shaft and provided with a first inclined surface, the first inclined surface being inclined to form a predetermined angle with a latitudinal axis of the washing shaft; a second rotary member installed to rotate with respect to the first rotary member and provided with a second inclined surface corresponding to the first inclined surface of the first rotary member, with an axial bore formed through the second rotary member to rotatably receive the inclined rotating shaft therein; a washing plate arranged at a wobbling position when the second rotary member rotates in a first rotating direction, and arranged at a level position when the second rotary member rotates in a second rotating direction; and a clutch to hold the second rotary member when a position of the washing plate changes from the level position to the wobbling position to prevent the second rotary member from rotating along with the first rotary member.