| 摘要 |
In the present invention, since gaps (31, 32) respectively provided at one ends (21, 22) of a field magnet through-hole (2) respectively extend toward the other ends (22, 21) passing on the side of a periphery 10 with respect to the field magnet through-hole (2), the radial dimension of the magnetic member (1) in this portion can be made smaller than the center of magnetic poles, so that the difference in thickness of the magnetic member in the radial direction (100) between the border of magnetic poles and the magnetic poles can be reduced. Accordingly, the asymmetry of the configuration of a rotor is not absolutely necessary, and the outer surface does not need to be depressed, and the torque ripple can be reduced. |
