| 摘要 |
<p>PURPOSE:To eliminate sliding based on inertia in case of opening, by supporting an armature by means of a supporting body provided with the spring property that is strong in the radial direction and can freely be deformed in the thrust direction. CONSTITUTION:When a coil 15 is conducted and excited, an armature 10 parts from a permanent magnet 16 and is sucked by means of a yoke 13 because it is sucked to the yoke 13 side, which sucking force is great, and a connecting portion 18 of the armature 10 contacts with the teeth 17 of the yoke 13. The inertia of a roller 1 is instantaneously sucked by the contact, and the roller is stopped at stop positions at high accuracy. Since the armature 10 perfectly parts from the permanent magnet 16 at the constant revolution side at that time, no sliding is formed between the constant revolution side and the stop side, and wear between both sides are not generated.</p> |
