| 摘要 |
PROBLEM TO BE SOLVED: To obtain a rotating electrical machine to stably hold a permanent magnet on a yoke portion side and reduce the leakage of magnetic flux generated by the permanent magnet. SOLUTION: Magnet holders 30, 35 are fit and held in holding grooves 40, 41 formed in the opposite portions on the outer diameter side of the inner wall faces of valley portions 25, 26 and thus installed over the valley portions 25, 26. Permanent magnets 32, 37 are fit in fitting grooves formed in the magnet holders 30, 35 and held by the magnet holders 30, 35 so that the center of each of the permanent magnets 32, 37 is shifted from the axial center of the corresponding magnet holder 30, 35 toward a field coil 14. When seen from the outside in the radial direction, the permanent magnets 32, 37 are partially exposed from claw-like magnetic pole portions 20, 24 and the remaining parts are positioned at the inner radius portions of the claw-like magnetic pole portions 20, 24. The permanent magnets are magnetized and oriented so that extended lines passing through their centers in the direction 42 of magnetization are directed toward the inner circumferential surfaces of the tip parts of the claw-like magnetic pole portions 20, 24. COPYRIGHT: (C)2009,JPO&INPIT
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