Patent ID: 11949286
Assignee: NINGBO GLOYEL ELECTRIC MOTOR CO. LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An electric motor stator, comprising:
a stator iron core comprising a stator yoke in an annular form and a plurality of stator teeth extending inwards in a radial direction from an internal circumferential surface of the stator yoke; and
an end cap, the end cap having formed, in an interior thereof, a receiving space that receives the stator iron core therein,
wherein the stator yoke has an external circumferential surface that is inwardly recessed to form at least one positioning groove, and the end cap has an internal surface provided with at least one positioning post protruding therefrom;
each of the at least one positioning post is insertable into and connectable with one of the at least one positioning groove; and
in the radial direction of the stator iron core, each of the at least one positioning groove corresponds to one of the stator teeth,
wherein the stator iron core comprises a plurality of first laminations and a plurality of second laminations, the first laminations being received in the receiving space of the end cap, the second laminations having an external circumferential surface that is outwardly protruded in the radial direction to form connecting parts, the connecting parts extending outside of the end cap; and
the at least one positioning groove comprises multiple positioning grooves which comprise first positioning grooves and second positioning grooves, the first positioning grooves being formed in the external circumferential surface of the first laminations and in alignment with the connecting parts in an axial direction, the second positioning grooves being formed in the external circumferential surface of the first laminations and the second laminations and being staggered with respect to the connecting parts in a circumferential direction.