| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate troubles that a recovery time to a first position becomes longer while a stable and excellent torque performance is obtained; and to avoid occurrence of useless mechanical loss and to contribute to reduction in power consumption, improvement in operation efficiency, avoidance of performance change, cost reduction, productivity improvement and downsizing. <P>SOLUTION: In a single-sided excitation rotary solenoid, a magnet rotor part 2 is rotated and displaced by electric conduction to a coil 4c from a first position Xf to a second position Xs, while the magnet rotor part 2 is recovered from the second position Xs to the first position Xf by cancellation of electric conduction. When the rotation direction Fm of the magnet rotor part 2 at the time of electric conduction is set to be in front, slit-like air gap formation parts 5p and 5q which form a gap Gi...wider than a gap Gr... between the inner peripheral surfaces 3pf and 3qf of yokes 3p and 3q and the outer peripheral surface 2 mf of a magnet 2m, over the prescribed range Lp...from the rear end position to the front of the inner peripheral surfaces 3pf and 3qf are formed. <P>COPYRIGHT: (C)2013,JPO&INPIT |
