| 摘要 |
<p>PURPOSE:To contrive accomplishment of thinning of a coil without reducing its space by a method wherein a recess part, into which the coil will be entered, is provided on an armature. CONSTITUTION:A yoke 1 has a center piece, having side pieces 6 on both sides, and a pair of middle leg pieces 7 with which a center piece 5 and a side piece 6 are connected, and the yoke 1 is formed almost in a shape. Also, a permanent magnet 2 has a magnetic pole S which comes in contact with the center piece 5 overlapping the center piece 5, at the same time, the magnet 2 has a magnetic pole N, which is different from the above-mentioned pole S, on the opposite side of the center piece, and a pair of coils 4 is formed by winding the coil on a pair of middle-leg pieces 7. An armature 3 has a pivotally supported part 8 at the position of the permanent magnet 2 superposing on the yoke 1 through the intermediary of the permanent magnet 2, and the armature 3 has a pair of contacting-separating part 9, which comes in contact with and separated from the side pieces 6 by the pivotally movement performed by the pivotally supported part 8 as a supporting point, on both sides. Besides, a recess part 10, where the coil 4 will be entered when the pivotal movement is performed, is provided. As a result, the thinning of the coil 4 can be accomplished without reducing the coil space.</p> |
