| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotor allowing a permanent magnet to be easily assembled to a holder. SOLUTION: A rotor 50 includes a rotating shaft 52, a cylindrically shaped rotating shaft 54 integrally engaged and firmly secured to the outer periphery of the rotating shaft 52, magnet holders 55 firmly secured to an outer peripheral surface of the rotating shaft 54, and permanent magnets 56 retained to the magnet holders 55. In a process to insert an insertion part 54a of the rotating shaft 54 into the magnet holders 55, the outer periphery of the insertion 54a of the rotating shaft 54 also slide contacts with the inner periphery of the magnet holders 55 and an inner periphery 56b of the permanent magnets 56. Consequently, for the permanent magnet 56, the inner peripheries 56b are pressed outwardly in a radial direction, and edges 56a at both sides abut against abutting surfaces 55g of the magnet holders 55, and thus protrusions 55h provided at the abutting surfaces 55g are elastically deformed. The permanent magnets 56 are press fitted into magnet insertion holes 55a to 55d respectively, and thus they are retained stably without rattling. COPYRIGHT: (C)2008,JPO&INPIT
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