| 摘要 |
<p>PURPOSE:To reduce the sound of collision of a yoke and an armature by providing a thin-plate type vibrating body which can be moved relatively against the pole contact face of the yoke or the armature and having a freely vibrating part provided extending from the vicivity of the pole contact face. CONSTITUTION:The extended part protruding from the outside part of an armature 13 is used as the freely vibrating part of an opposing long side 15b. When the pole contact face of the armature 13 is alienated from the pole contact face of a yoke, the armature 13 is opened toward its tip so that a gap is provided against the yoke. If an electromagnet coil 12 is excited when the armature is brought into contact with a stopper 14 and comes to a stand-still in the state wherein an electromagnet coil is demagnetized, the pole contact face of the armature 13 is attrached to the pole contact face of a yoke 11a and a vibrating body 15 is pressed. As a result, the vibrating body 15, especially its freely vibrating part S, vibrates and the enegry of collsion is convered into vibrating energy, the impact of collision of the armature 13 is alliviated, and the sound of collision is reduced.</p> |
