| 摘要 |
PROBLEM TO BE SOLVED: To improve magnetic characteristics by increasing a slot area in a stator for a dynamo-electric machine, having teeth parts in an enveloping shape and a core back part. SOLUTION: This stator 13 of a brushless motor 11 is constituted by the core back part 21, that is, an annular core, and the teeth parts 22. The plurality of the teeth parts 22 are attached to an inner periphery of the core back part 21 in the circumferential direction. The respective teeth parts 22 are formed in the enveloping shape and have protruding parts 27, which protrude to the core back part 21 in a spiral form and around which a coil 24 is wound, base parts 28 which face the core back part 21 and extend in the circumferential direction from the root of the protruding parts 27, and front end parts 29 which extend in the circumferential direction from front ends of the protruding part 27. Fitting protrusions 35 are formed at the central part thereof, in the circumferential direction at an outer side of the teeth parts 22 at the outside in a circumferential direction and protrude outward in the radial direction. The fitting protrusions 35 extend in the axial direction of the brushless motor 11, and fitting recessed parts 36 are formed at positions meeting the fitting protrusions 35 of the inner periphery of the core back part 21. COPYRIGHT: (C)2003,JPO
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