| 摘要 |
<p>PURPOSE:To reduce misjudgments on the operating state by mounting a projection on a plunger and providing a contactor of switch for operating state discrimination within a moving range of the projection. CONSTITUTION:A coil 1, a plunger 5 inserted into the coil 1 and a micro switch 4 fixed to the coil 1 through the fixture 3 are provided. A spheroidal projection is fixed to the plunger 5 of ferromagnetic substance, and a contactor 6 provided for the switch 4 is located within a moving range of the projection 2. The contactor 6 is inclined to the axis of the plunger 5. In case of an electric current flowing through the coil 1, the plunger 5 moves to the switch 4 along the axial direction and the projection 2 is brought into contact with the contactor 6 and the switch 4 is connected thereto. As the result, an operating state distinguishing indicator operates to indicate that the plunger 5 is in operation. In case of stopping supply of an electric current to the coil, the plunger 5 moves to a backward direction and the switch 4 is cut off by separating the contactor 6. Accordingly, misjudgment can be prevented.</p> |
