| 摘要 |
PROBLEM TO BE SOLVED: To provide a stator core in which winding of a coil with a thicker wire is possible while the space factor of the coil in a brushless motor is improved. SOLUTION: Teeth 17 are arranged with a prescribed interval in circumferential direction on the inner peripheral side of a yoke 16 formed in ring. The teeth 17 are attached with an insulator 18 of synthetic resin. A coil 14 is wound around coil winding parts 19a and 19b of the insulator 18 and the teeth 17. A center axis P of the coil winding parts 19a and 19b is tilted by a prescribed angleθagainst a reference line Q that extends radially from a center O of the yoke 16, with the teeth 17 asymmetric with the insulator 18. A first coil housing part 21 and a second coil housing part 22 are provided on both sides of the teeth 17 in circumferential direction, with the teeth 17 in between. A cross-sectional area S<SB>1</SB>of the first coil housing part 21 is smaller than a cross-sectional area S<SB>2</SB>of the second coil housing part 22 (S<SB>1</SB><S<SB>2</SB>). COPYRIGHT: (C)2004,JPO&NCIPI
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