| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary machine which makes a rotor low in inertia.SOLUTION: A rotor yoke shaft 10 which has a magnet 12 at an outer periphery and which a rotary shaft 7 penetrates includes: a pair of ring-shaped recessed parts 23, 24 formed of a pair of columnar recessed parts 21, 22, the rotary shaft 7 is coupled only with a thick part 10A in center of the rotor yoke shaft 10, and a step part 20 of the rotary shaft 7 abuts against the thick part 10A to be coupled. |
