| 摘要 |
A rotational machine which improves the reliability of the permanent magnets provided between claw poles by preventing shift in an axial direction during operation of the rotational machine. A stator and a rotor supported rotatably on an inner periphery of the stator are provided. The rotor has a pair of claw poles disposed in an alternately opposed orientation and having cylindrical field exciting coils on a central section. A permanent magnet is disposed between the claw poles. A holder retains the permanent magnets to a fixed position. The holder retains the permanent magnets between the claw poles by pressing on a side face of the claw poles as a result of an elastic force acting with respect to the rotational direction of the rotational machine.
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