| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor comprising annular magnets that can improve motor characteristics by preventing the occurrence of differences in magnetic force between magnetic poles. SOLUTION: A cylindrical molded unit 13 is formed by combining annularly a prescribed number of circular premolded units 14 that are oriented radially, and by fixing their joints 15 to integrate the molded units 14. An annular magnet 12 is structured by being fixed and integrated by stacking the cylindrical molded units 13 in a prescribed number of steps in the axial direction, and by displacing in the circumferential direction the joints 15 of the premolded units 14 of the cylindrical modeled units 13 neighboring in the axial direction. The rotor is obtained by fitting the annular magnets 12 to the outside circumferential part of a rotating shaft 11 and by fixing and integrating them with the shaft. COPYRIGHT: (C)2004,JPO
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