| 摘要 |
PROBLEM TO BE SOLVED: To provide a slotless motor having an insulator structure solving the problem that a coil span cannot be enlarged to a value larger than 1 while taking advantage of an insulator type which can simplify a stator manufacturing process. SOLUTION: The slotless motor includes a cylindrical stator core, a stator including a plurality of coils mounted on the inner peripheral side of the stator core, and a rotor including a plurality of permanent magnets on an outer peripheral surface and being arranged to be opposed through an air gap on the axis of the stator. In the slotless motor, the stator 1 includes cylindrical ring-shaped insulators 2 alternately arranging slots 24 including openings 26 on the inner peripheral side and the slots 24 including the openings 25 on the outer peripheral side in the peripheral direction, external coils 3a to 3c wound from the outside to be passed through the outer-peripheral side openings 25 of the insulators 2 and hold one slot 24, and internal coils 4a to 4c wound from the inside to be passed through the inner-peripheral side openings 26 and hold one slot 24. In the slotless motor, each phase winding has external coils 3a to 3c and internal coils 4a to 4c equal in quantity. COPYRIGHT: (C)2011,JPO&INPIT
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