Patent ID: 8393182

Claim:
A drum type washing machine, comprising: a tub for holding wash water, the tube having a wall for mounting a drive unit thereto; a drum rotatably installed within the tub; a shaft passed through the tub and coupled to the drum installed within the tub, for transmission of driving force from a motor to the drum; at least one bearing for supporting the shaft; a bearing housing fixedly secured to a wall of the tub for supporting the bearing; a stator; and a rotor around the stator, wherein the rotor and the stator form the motor, wherein the stator includes; an annular helical type core having multiple layers formed by winding a plate having teeth and a base portion, an insulator made of insulating material and enclosing the helical type core to cover an outside surface of the helical type core, fastening portions formed integrally with the insulator separate from the helical type core, the fastening portions projected from an inside circumferential surface of the helical type core toward a center of the stator, for fastening the stator to the tub, where a fastening portion has a fastening hole for fastening the stator to the wall of the tub with a screw, and wherein the helical type core has no fastening portion that is formed on the inside circumferential surface thereof.