| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator in which the movable range of a moving element for attaining a constant output is widened by reducing variation in thrust due to the amount of stroke. SOLUTION: The actuator has such a profile as the reluctance is varied gradually when a plunger 7 in which a flux acting surface is formed through conduction moves to any one of first and second yokes 5 and 6 opposing the circumferential surfaces P1 and P2 of the plunger 7. The actuator has such a profile as the clearance of the plunger 7 and the first and second yokes 5 and 6 is varied gradually when the plunger 7 moves in the axial direction. COPYRIGHT: (C)2006,JPO&NCIPI
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