| 摘要 |
PURPOSE:To stop load rapidly when conduction is at OFF, and to simplify structure by slidably supporting a shaft, sliding the shaft by utilizing the excitation magnetism of a stator and combining the shaft with an output shaft. CONSTITUTION:A cylindrical hole 3 is formed at the center of a stator core 1 on which an exciting coil 2 is wound, and a shaft 4 movable in the thrust direction is supported into the cylindrical hole through bearings 11, 13. A rotor with a hysteresis ring 18 is set up at one end of the shaft 4. A magnetic attracting disk 15 is mounted to the rotor as being opposed to the end surface of the stator while it is separated previously through a return spring 19. A gear 20 combined with a decelerating mechanism 21 is fitted at the other end of the shaft 4. When the exciting coil 2 is conducted, the rotor is turned while the shaft 4 is moved in the thrust direction against the force of the spring 19, the gear 20 is combined with the decelerating mechansim 21, and output is obtained from the output shaft 24. |
