| 摘要 |
<p>PURPOSE:To enable the polarized electromagnet to operate sufficiently even when a current flowing in a coil is small by a method wherein the upper and the lower faces of the forward and the backward end parts of an H type core are made to face to respective yokes, and magnetic fluxes of permanent magnets are made to cooperate with magnetic flux of the coil. CONSTITUTION:The coil 4 is wound around the center part 11 of the H type core 1. The yokes 21, 22 are arranged respectively at the lower part of the left side part 12a of the forward end part 12 and the left side part 13a of the backward end part 13 of the core 1, and those yokes 21, 22 are connected through the permanent magnet 31. The yoke 23 is arranged at the right side of the core 1, and the yoke 23 is consisted of parts 23a, 23c. The yokes 24, 25 are arranged respectively at the upper part of the forward end right side part 12b and the lower part of the backward end right side part 13b of the core 1, and the yokes 24,25 are connected to the yoke 23 through the permanent magnets 32, 33. Those yokes 21-25 and the magnets 31, 35 are held being integrated in one body, and is held rotation-freely making the axis of the coil 11 as the axis of rotation, and is constituted as an armature 2. The armature 2 rotates in the opposite direction respectively in accordance with the no current carrying and the current carrying conditions of the coil 4.</p> |
