| 摘要 |
PROBLEM TO BE SOLVED: To improve the efficiency of a motor by efficiently using a space around a coil end to reduce iron loss, while miniaturizing the motor. SOLUTION: A tooth 1 is formed, by stacking magnetic plates in parallel, in a direction vertical with respect to the axial direction and the radial direction at the center for a circumferential direction. A yoke 21 is formed by vertically stacking magnetic plates to the axial direction. As the magnetic bodies, for example, an electromagnetic steel plate is used. A magnetic flux flowing through a stator flows in a substantially diameter direction in the tooth 1 and in a substantially circumferential direction in the yoke 21, respectively. Accordingly, in the tooth 1 and in the yoke 21, the magnetic flux flowing therethrough flows, in parallel in a direction where the stacked magnetic plates spread. As a result, the magnetic resistance for the magnetic flux flowing through the tooth 1 and the yoke 21 will not increase; and further, since a powder magnetic core is not used, iron loss will be reduced in the stator as a whole. COPYRIGHT: (C)2008,JPO&INPIT
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