Patent ID: 7086254

Claim:
A direct-drive washing machine comprising: an outer tub placed inside a case so as to keep a washing water in store; an inner tub installed inside the outer tub to revolve wherein that a cleaning of a laundry is carried out in the inner tub; a pulsator installed inside the inner tub so as to revolve relatively to the inner tub; a pulsator shaft connected to the pulsator; a drive motor installed under the outer tub so as to revolve the pulsator and inner tub; a rotor housing, a rotor of the driving motor being connected to the rotor housing; a first rotating shaft connected directly between the drive motor and pulsator so as to transfer a drive power of the drive motor to the pulsator directly; a second rotating shaft installed between the drive motor and the inner tub so as to selectively transfer the drive power of the drive motor to the inner tub, the second rotating shaft having near teeth at a lower end of the second rotating shaft in a circumferential direction; an inner tub shaft connected to an upper end of the second rotating shaft through a connecting device being located between an upper side of the first rotating shaft and the pulsator shaft; a clutch installed between the second rotating shaft and drive motor so as to selectively transfer the drive power of the drive motor to the inner tub, the clutch including a rotor bushing being fixed in a circumferential direction of the rotor housing and having near teeth at an outer circumference face, and a sleeve gearing between the near teeth of the rotor bushing and the gear teeth of the second rotating shaft; and a clutch operating device, the sleeve being movable upward and downward in accordance with operation of the clutch operating device to connect the rotor bushing to the second rotating shaft or to disconnect the rotor bushing from the second rotating shaft.