| 摘要 |
PROBLEM TO BE SOLVED: To resolve the defective contact of contact point portions and the defective operation caused by the corrosion of components and improve long- term contact reliability by providing a permanent magnet, magnetic plates, and a moving member set to the operational state when an actuator is operated. SOLUTION: The center section of a permanent magnet 16 is fixed to a rotary shaft 15 provided at the upper section in a case 1. The magnet 16 is inserted between a pair of magnetic plates 13, 13, the protruded section of the shaft 15 to the outside of the case 1 is connected to the output side of a gear mechanism 17. The base section of an actuator 18 is fixed to the input side of the gear mechanism 17. The gear mechanism 17 sets the magnet 16 to the erect state via the shaft 15 when the actuator 18 is kept at the erect state. When the actuator 18 is inclined by the prescribed angle for operation, the magnet 16 is set to the attitude perpendicular to the magnetic plates 13, 13 from the erect state via the shaft 15, then the magnetic plates 13, 13 are magnetized. A switch section A is turned on or off via the moving member 8, a normally closed terminal 5, a normally opened terminal 6, and a moving piece 10. Since the switch section A is magnetically operated, long-term contact reliability can be improved. |
