| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor that is of small size and yet produces significant power by enhancing winding efficiency. SOLUTION: The motor 1 includes a coil unit 22 fixed and supported on a stator holder 12. The coil unit 22 is so constructed that multiple coils 26 to 28 are wound on the circumference of an annular core 25 along the circumferential direction. A rotor 5 is rotatably supported on the stator holder 12 through a bearing 4. Inside magnets 44 and outside magnets 45 are respectively concentrically disposed on the inner radius side and on the outer radius side of the coils 26 to 28. The inside magnets 44 and the outside magnets 45 are respectively constructed of first magnets 46, 48 and second magnets 47, 49 alternately arranged in the circumferential direction. The inside magnets 44 and the outside magnets 45 are so disposed that identical magnetic poles are opposed to each other in the radial direction. COPYRIGHT: (C)2008,JPO&INPIT
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