| 摘要 |
PROBLEM TO BE SOLVED: To surely hold a core against a centrifugal force and a magnetic attraction force or the like with a simple configuration when a rotor core and a stator core are formed of dust cores, respectively. SOLUTION: A motor is configured such that a core 2 of a rotor 1 is formed of a dust core. The motor includes an annular outer-periphery holding member 3 fitted to the outer periphery of the core 2 and an annular biasing structure 6 fitted to the inner-peripheral side of the core 2 so as to bias the core 2 from the inner-peripheral side to the outer-peripheral side. The outer periphery of the core 2 is held by the outer-periphery holding member 3. The biasing structure 6 holds the core 2 in a state of biasing the core from the inner-peripheral side to the outer-peripheral side. Consequently, it is possible to surely hold the core 2 with a simple configuration even if the core 2 is deformed by compression of the dust core to the outer-peripheral side by the centrifugal force or the like. COPYRIGHT: (C)2011,JPO&INPIT
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