| 摘要 |
<p>PURPOSE:To increase the attraction of a movable side without reducing a coil space and save power consumption by a method wherein one of a set of second and third magnetic elements and a permanent magnet and a set of a first magnetic element is used as a fixed side and the other is used as the movable side. CONSTITUTION:A set of a first magnetic element 1 and a coil 2 is used as a fixed side and a set of a second magnetic element 3, a third magnetic element 4 and a permanent magnet 5 is used as a movable side which can be moved reciprocally along the direction of the arrangement of both the ends 7 and 8 of the first magnetic element 1. Further, a restoring spring is provided on the movable side so as to make the third magnetic element 4 attracted to the other end 8 of the first magnetic element 1 and make the other side 9 of the second magnetic element 3 attracted to the one end 7 of the first magnetic element 1. With this constitution, the coil space can be increased and the attracting force of the movable side can be increased and the power consumption can be suppressed.</p> |
