| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor of a permanent magnet motor further reduced in the leakage of magnetic flux in a rotor core. SOLUTION: The rotor 100 of the permanent magnet motor is equipped with: the rotor core 17 which is constituted by laminating a prescribed number of electromagnetic steel plates which are punched out in prescribed shapes; a plurality of magnet accommodation holes 11 which are formed along the external periphery of the rotor core 17; a pair of magnetic flux leakage suppression slits 13a, 13b which are formed at both ends of the magnet accommodation holes 11, connected to the magnet accommodation holes 11, and extended toward the center of a magnetic pole along the external periphery of the rotor core 17; permanent magnets 8 which are inserted into the magnet accommodation holes 11; and an external peripheral thinned part which is formed between the external periphery of the rotor core 17 and the magnetic flux leakage suppression slits 13a, 13b. A shape of the external peripheral thinned part is formed in such a waveform shape that the magnetic passage length of the external peripheral thinned part becomes long compared with the case where the external peripheral thinned part is linear or circular, and extends in the circumferential direction. COPYRIGHT: (C)2011,JPO&INPIT
|
