| 摘要 |
PROBLEM TO BE SOLVED: To facilitate assembly by setting a gap large between a stator case and a magnetic pole iron plate inserted in the case, and reduce electromagnetic vibration and noise of an inductor type synchronous motor by fixing the iron plate after assembly. SOLUTION: The gap between the magnetic pole iron plate inserted in an inner periphery of the stator case and an inner peripheral surface of the stator case is made uniform. In order to fix the magnetic pole iron plate, an outer peripheral surface of the stator case in the vicinity of an insertion part of the magnetic pole iron plate is pressed partially, and a plurality of recesses 20 are formed. Partial protruding parts are formed on an inner peripheral part of the stator case by using the recesses 20. The magnetic pole iron plate is pressed by using the protruding parts and fixed to the stator case, so that electromagnetic vibration is depressed, and vibration and noise are reduced. COPYRIGHT: (C)2003,JPO
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