Patent ID: RE43196

Claim:
A structure of a driving unit in a drum type washing machine. comprising: a tub for storing washing water; a drum of a metal rotatably mounted inside of the tub disposed horizontal to the ground, or with an angle to the ground for accommodating laundry therein; a shaft connected, through the tub, to the drum mounted inside of the tub for transmission of a driving force of a motor to the drum; bearings each fitted onto an outer circumference of the shaft for supporting the shaft; a bearing housing having a central portion and stator fastening bosses disposed at fixed intervals along a circumference of the central portion, for supporting the bearings; a stator having a plurality of magnetic cores formed by stacking magnetic laminations each having a salient pole projected outward in a radial direction with respect to a central longitudinal axis of the stator, a plurality of coils each wound around a respective one of the salient poles, a frame of insulating material for covering top and bottom surfaces of a magnetic core assembly of the magnetic cores, and a plurality of fastening ribs projected inward in the radial direction, the fastening ribs formed as one unit with the frame; a cup formed rotor having a rotor body of magnetic material and permanent magnets, the rotor body comprising a sidewall serving as a back yoke that forms a magnetic flux path and a rear wall formed as one unit with the sidewall to cover an outer circumference and a bottom of the stator, the permanent magnets fitted to a setting surface of an “L” shaped bent portion of the sidewall; and a connector connecting the rotor and the shaft for rotating the drum.