| 摘要 |
PURPOSE:To prevent malfunction due to shock and vibration and to attain excellent shock and vibration resistance, by providng an armature and a pole so that they are positioned in such a manner that the lines connecting its sliding fulcrum and its center of gravity are almost made orthogonal. CONSTITUTION:The armature 15 and the pole 17 are provided to be positioned so that a line segment (m) connecting the sliding fulcrum (turning shaft 16) of the armature 15 and its center of gravity 0 is almost made orthogonal to a line segment (n) connecting the sliding fulcrum (pole shaft 18) of the pole 17 and its center of gravity P. Thus, malfunction of the armature 15 and the pole 17 against shock and vibration is prevented, the operational reliability is improved and the shock and vibration resistance is made excellent. Further, a weak elastic force is used for a restoring spring 20, so as to attain the miniaturization of an electromagnet 11 and the saving energy of the power consumption. |
