| 摘要 |
PURPOSE:To prevent occurrence of damage by being engaged or contacted by other members, etc., by allowing inside of a reservoiring section, provided outside side wall of a switch cylinder, to shift along the side wall. CONSTITUTION:When a switch cylinder 27 moves upwards putting up resistance against the force of a sprint 31, a lead switch 26 is moved to the position of operation by the magnetic force of a magnet 20 of a float 21 located on the position of being engaged with a projection 22. After confirming by this that the lead switch 26 is in normal operation, the switch cylinder 27 is returned to the set position. And then, when decreasing liquid in a reservoir 1 comes to such an extent that its level contacts a low wall section 15 of the float 21, the lead switch 26 is actuated by the magnetic force of the magnet 20 detecting that the liquid level position has come as low as the set position. |
