| 摘要 |
<p>A rotor 30 includes a rotor core 31 made of layered electromagnetic steel sheets, six permanent magnets 32 which are embedded in the rotor core 31 along an axial direction and which are placed in a generally regular hexagonal shape along a circumferential direction, rivets 33 which are placed near and radially inside vertices of the regular hexagon formed by the six permanent magnets 32 and which extend through the rotor core 31 in the axial direction to tighten the rotor core 31, and through holes 34 which are provided between the rivets 33 of the rotor core 31 and which are formed through the rotor core 31 in the axial direction. The through holes 34 are provided radially inside central portions of the permanent magnets 32 of the rotor core 31.</p> |
