| 摘要 |
The invention provides a stator structure of an outer rotor type motor for a drum type washing machine comprising: an annular helical core (HC) of a multi-layered structure formed by stacking a steel plate having a belt-shaped base (150) and "T"-shaped members (151) projecting from said belt-shaped base (150) while winding the steel plate in a helix starting from a bottom layer to a top layer, an upper insulator (60a) of an electric insulating material covering an upper side of the helical core (HC) in a shape complementary to a shape of the helical core (HC); and a lower insulator (60b) of an electric insulating material covering a lower side of the helical core (HC) at the time of assembly with the upper insulator (60a) in a shape complementary to a shape of the helical core (HC), wherein each of the upper insulator (60a) and the lower insulator (60b) includes at least three fastening portions (600) formed as one body therewith, wherein each fastening portion (600) is projected from an inner side of the helical core (HC) toward a center of the stator (6) for fastening the same to a fixing side of a tub, the fastening portion (600) having a boss (620) which forms a fastening hole (620a) for fastening the stator (6) to a fixing side of the tub with a fastening member, wherein a cylindrical sleeve (800) is placed in said fastening hole (620a) and the fastening portion (600) has fastening projections (620b) on an inside circumferential surface of the fastening hole (620a), for preventing said cylindrical sleeve (800) from falling off said fastening hole (620a). |
