| 摘要 |
PROBLEM TO BE SOLVED: To increase the torque of and reduce the cost of a plane-counterfaced motor. SOLUTION: Portions of coils 22 on stator 21 side, having no effect in producing driving force in the motor 11, are positioned outside the areas of rotor 31 side permanent magnets 32, where magnetic gaps are formed. As a result, only the effective portions of the coils are placed on the peripheral side contributing to torque of the motor, and the torque can be increased. When the coils are formed using signal-phase printed coils, the coil in one phase is formed in one layer, and a three-phase motor is formed in three layers, and thereby the number of through-holes formed in the board can be reduced. |
