| 摘要 |
<p>PURPOSE:To reduce power consumption of a coil by a method wherein a bar permanent magnet is arranged between a ?-shaped iron core wound a coil and a yoke having a plane section and the permanent magnet goes and returns between the iron core and yoke in accordance with energization to the coil. CONSTITUTION:A coil 22 is mounted on the base section 21a of a ?-shaped iron core 21 consisting of a flat soft magnetic substance and the plane section 23b, 23c, of a bar yoke 23 consisting of the soft magnetic substance is arranged by facing to two finger sections 21b, 21c. Next, an armature 24 providing a non- magnetic substance such as synthetic resin roughly shown by a two-dot chain line with the permanent magnet 25 is arranged between the iron core 21 and yoke 23 by facing the N pole and S pole of the permanent magnet 25 to the iron core finger sections 21b and 21c respectively. When the coil 22 is not energized, the permanent magnet 25 is adsorbed to the yoke 23 and the magnetic flux in the reverse direction to the magnetic flux formed by the permanent magnet 25 is generated by energizing the coil 22. This flows the magnetic flux of the permanent magnet 25 in the forward direction against the magnetic flux generated by the coil to promote the pivot of the armature 24 and power consumption can be reduced.</p> |
