| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor with excellent iron core magnet characteristics and a manufacturing method for the motor. SOLUTION: This motor is of an inner rotor type having a motor case and a stator. A portion of the motor case is brought into contact with a yoke of the stator, and tensional stress is applied to the stator by a contact part toward an outer side in the radial direction of the stator. The contact part can be the outer periphery and/or the inner periphery of the yoke of the stator. Besides, it is preferable that a range in which the tensional stress is 10-150 MPa is at least 50 volume% of the total yoke. Moreover, the motor is manufactured by inserting the stator in the motor case in such a state that the temperature of the stator iron core is higher than the temperature of the motor case and then fixing the stator with the motor case. COPYRIGHT: (C)2006,JPO&NCIPI
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