| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electromagnetic manipulating mechanism for delaying start of operation not considering limitation on application environment, and also to provide a power switching apparatus using the same mechanism. <P>SOLUTION: The electromagnetic manipulation mechanism comprises a rotor having an axis to make reciprocative movement in the axial direction, a yoke including a surface facing to the side surface of the rotor in parallel to the axial direction and both end surfaces of the rotor in the axial direction, a permanent magnet allocated between the yoke and rotor, two or more drive coils allocated in the internal side of yoke and in the periphery of the rotor, and a power source for applying an excitation current to the drive coils. Moreover, this mechanism also comprises a first magnetic circuit which is extended to the rotor via the yoke and one end surface of the rotor from the permanent magnet, and a second magnetic circuit extended to the rotor via the yoke and the other end surface of the rotor from the permanent magnet. In this electromagnetic manipulating mechanism, the drive coil is provided with a forward drive coil excited for forward movement of the rotor, and a backward drive coil connected electrically in both terminals to induce an induction current when the forward drive coil is excited. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
