| 摘要 |
<p>PURPOSE:To make it possible to control the output and a stop only by a back and forth movement of a rotor shaft by forming a rotor body and the rotor shaft separately so that the rotor shaft can move in the direction of the axis, and at the same time, by providing a releasing means for the body and the rotor shaft. CONSTITUTION:A rotor 7 is so loaded to a case 2 provided with a coil 25 that is capable of swivelling. The rotor 7 is constituted of a body 8 provided with a magnet 10 on the periphery of a main part 9 and the rotor shaft 13. At that time, the body 8 and the rotor shaft 13 are formed separately, and the rotor shaft 13 can move back and forth freely along the shaft against the body 8. When the rotor shaft 13 was moved to one side in the axial direction, an engagement section 16 for engaging the rotor shaft with the body 8 as a unit is provided. According to the constitution, the output can be taken out from the rotor shaft 13 and a stop can be made only by a back and forth movement of the rotor shaft 13.</p> |
