Patent ID: 7340925

Claim:
A washing machine comprising: a tub having an open front side; a drum rotatably provided in the tub to hold laundry; a motor rotating the drum; a cabinet having the tub and the motor inside; a control unit configured to control a vibration of the tub; and a vibration sensing assembly configured to sense the vibration of the tub, the vibration sensing assembly comprising: a fixing part fixed to an inner wall of the cabinet; a first rotational body having a first end connected to the fixing part and configured to rotate a first predetermined range with respect to the fixing part so as to restrict a front to rear vibration of the tub; a second rotational body having a first end being moveable by a vibration of the tub and a second end connected rotatably to a second end of the first rotational body, said second rotational body configured to rotate a second predetermined range with respect to the first rotational body so as to restrict an up and down vibration of the tub; and a sensor configured to sense a rotational movement of at least one from the first and second rotational bodies.