| 摘要 |
PURPOSE:To easily combine permanent magnets with a yoke and enhance the retaining force, by providing contact surfaces between the permanent magnets and auxiliary poles of the yoke, with convex sections, and by providing the outer peripheral surface of the permanent magnets and auxiliary poles, with concave sections fitted on the convex sections of the yoke. CONSTITUTION:A stator 1 consists of a cylindrical yoke 6, a plurality of permanent magnets 7 and auxiliary poles 8 arranged on the inner peripheral surface of the yoke 6, and a cylindrical magnetic pole cover 9. On the inner peripheral surface of the cylindrical yoke 6, convex sections 12, 13 are arranged, and on the outer peripheral surface of the permanent magnets 7 and the auxiliary poles 8, concave sections are arranged and fitted on the convex sections 12, 13 of the yoke 6. As a result, the positions of the permanent magnets and the auxiliary poles are fixed and are easily combined with each other.
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