| 摘要 |
A magnetic drive device comprises a hollow cylindrical outer rotor (2), an inner rotor (3) inserted in the outer rotor so as to project at least at one end thereof beyond an end of the outer rotor and supported rotatably relative to the outer rotor, two magnetic bearings (9,12) arranged around the outer rotor and spaced apart axially thereof for holding the outer rotor radially thereof, a first magnetic coupling (10) having a drive portion (10a) disposed around the outer rotor for transmitting a torque to the outer rotor, and a second magnetic coupling (13) having a drive portion (13a) disposed around the inner rotor at a portion thereof projecting beyond the end of the outer rotor for transmitting a torque to the inner rotor. <IMAGE> |
