| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor which has high reliability by fixing an attractive magnet (Mg) by only magnetic attraction, thereby keeping the rotation stably without occurrence of abnormal sound such as shock, etc. SOLUTION: A stator (S) has an annular core (14), and an attractive Mg(17) which is magnetically attracted to the face (14b) on the rotor (R) side of this core; and a rotor has a bushing (3) made of nonmagnetic material, and a yoke (8) fixed to it and made of magnetic material. The bushing and the yoke have opposite faces (3e2 and 8d1), respectively, opposed to the attractive Mg, and also the opposite face (3e2) of the bushing is made closer to the attractive Mg than the opposite face (8d1) of the yoke. When the motor (50) is posed such that the rotor side becomes the ground side and the attractive Mg is removed from the core and abutted against the opposite face of the bushing thereby being put in a free state, the attractive Mg is attracted to the core, resisting the gravity. COPYRIGHT: (C)2008,JPO&INPIT
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