主权项 |
1. An electric motor having a stator and a rotor rotatable with respect to the stator, the stator comprising:
a stator core comprising a yoke, a plurality of teeth extending inwardly from the yoke, each tooth comprising a base and two arm portions circumferentially extending from an end portion of the base in opposite directions, a plurality of winding passages, each winding passage being formed between a respective pair of adjacent teeth and having a winding opening between two adjacent arm portions of the adjacent teeth; a stator winding being wound about the bases of the teeth and received in the winding passages; a first insulating frame assembled on a first axial end portion of the stator core; a second insulating frame assembled on a second axial end portion of the stator core; a plurality of first insulating elements extending between the first and second insulating frames, each first insulating element being fitted within a corresponding winding passage and configured to insulate the stator winding from the stator core, two side portions of each first insulating element extending along an inner surface of the winding passage adjacent the winding opening; and a plurality of second insulating elements extending between the first and second insulating frames, each second insulating element extending across the corresponding winding opening and having two side portions disposed between the first insulating element and the respective arm portion of the corresponding tooth. |