| 摘要 |
PURPOSE:To obtain strong rotary torque in a flat structure by forming impeller vanes on the outer periphery of a field magnet as a rotor, and providing a stator armature opposed to upper end lower surfaces of the magnet. CONSTITUTION:A field magnet 23 which is alternately magnetized circumferentially at N-pole and S-pole is formed as a rotor, and impeller vanes 25 are formed on the outer periphery of the magnet 23. A stator armature made of armature coil groups 15, 15' opposed to the upper and lower surfaces of the magnet 25 is provided. Printed circuit boards 16, 18 are opposed to the magnet 23. A pectinated conductive pattern 17 for detecting the rotor is formed on the board 18, and a position detector 19 is arranged. A diffuser vane 8 and an inducer vane 9 are respectively provided at upper and lower stationary sides opposed to the vane 25. |
