| 摘要 |
PROBLEM TO BE SOLVED: To provide an armature core of a motor, which can prevent concentration of stresses on a root part-side of teeth, without comppressing the storage space of an electromagnetic coil. SOLUTION: The teeth 16u, 16v and 16w, engaged with the electromagnetic coil and return path parts 15u, 15v and 15w, are formed integrally. Concave curves 30, curved to inner peripheral faces of the return path parts 15u, 15v and 15w in concave shapes, are formed at the corners of boundaries of the teeth 16u, 16v and 16w and the return path parts 15u, 15v and 15w. The concentration of stresses is relieved by the concave curves 30, and the pressure of the storage space of the electromagnetic coil in the teeth 16u, 16v and 16w is eliminated. COPYRIGHT: (C)2009,JPO&INPIT
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