| 摘要 |
<p>PURPOSE:To provide an electro-magnet apparatus which can reduce sound level of collision without resulting in reduction of attracting force and displacement and without the increase of size and rise of cost. CONSTITUTION:A fixed iron core 1, armatures 2a, 2b which are coupled with or separated from such fixed iron core 1 and an electromagnetic coil 3 causing the fixed iron core 1 to attract the armatures 2a, 2b are provided. The fixed iron core 1 is provided with a through hole 7. A couple of thin sheet materials 8a, 8b are provided to cover both end portions of the through hole 7. In this through hole, a viscous fluid 9 is sealed in such a degree as swelling only the one of the thin sheet materials 8a, 8b. Moreover, a stopper is also provided so that the thin sheet material 8b is pressed, for example, at the position where the armature 2a is separated from the fixed iron core 1.</p> |
