| 摘要 |
[Problem] To provide an inexpensive reservoir tank in which a light-out fluid level can be moved even farther away from a lead switch while reliably moving a float up and down and stabilizing the operation of the lead switch. [Solution] A fluid volume detection unit 19 of a reservoir tank 5 has a float 23 on which a magnet 22 that switches a lead switch 24 on and off is disposed and which moves up and down in accordance with the fluid level of hydraulic fluid. The lead switch 24 is disposed above the magnet 23. The float 23 has a float body 23a, magnet braces 23b and 23c on an upper end of the float body 23a, a magnet support portion 23d that supports the magnet 22 on upper ends of the magnet braces 23b and 23c, and reinforcement ribs 23b 1 and 23b 2 and 23c 1 and 23c 2 . Because of this, the magnet 22 stably moves up and down, and the operation of the lead switch 24 is stable. |
