Patent ID: 11955861
Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method for manufacturing a stator of a brushless motor, comprising the following steps:
1) providing a pole part, which comprises a plurality of teeth spaced-apart from each other along a circumferential direction, and a ring-shaped portion connected to radial inner sides of the teeth;
2) arranging an insulating frame to the pole part, the insulating frame comprising an inner ring corresponding to the ring-shaped portion, and a plurality of branches respectively corresponding to the teeth, an axial end of the inner ring being fixed with a plurality of power terminals;
3) winding the windings on the branches of the insulating frame, and connecting the windings to the corresponding power terminals;
4) providing a yoke part and pressing the pole part into the yoke part, with radial outer sides of the teeth abutting against a radial inner side of the yoke part;
wherein, the ring-shaped portion comprises a plurality of pole shoes respectively corresponding to the teeth, and a plurality of bridges configured to connect adjacent pole shoes;
the ring-shaped portion further comprises a plurality of holes, each of which is formed between two axially adjacent bridges, and
the insulating frame further comprises a plurality of protrusions formed at a radial inner side of the inner ring corresponding to the holes, and the protrusions are received in the corresponding holes.