| 摘要 |
PURPOSE:To improve dimensional accuracy, to narrow an air gap, and to improve motor characteristics by providing an outer peripheral case by molding integrally with a stator in a structure for holding the edge of the outer periphery of a flat type stator having a motor coil. CONSTITUTION:An outer peripheral case 7 molded integrally with a flat type stator 3 having a motor coil 3a is provided. Accordingly, the edges of the outer periphery of the stator 3 are held among the air gaps of rotors 1, 2, 4. Here, since the case 7 is formed by molding, its dimensional accuracy can be easily enhanced. Accordingly, the stator 3 can be accurately positioned and held. Thus, since the dimensional accuracy of the air gap is improved, the air gap can be narrowed, the motor characteristics can be improved, and assembling properties can be improved. |
