| 摘要 |
PROBLEM TO BE SOLVED: To provide a lever float type drain trap preventing damages of a float. SOLUTION: The drain trap composes a casing having a valve chamber 6 inside by fastening a lid body 4 to a body 3 having an inlet port 1 and an outlet port 2. A first valve port 7 and a second valve port 8 communicating the valve chamber 6 with the outlet port 2 are formed at a lower part of the valve chamber 6. A lever 13 is connected to an oscillating shaft 12 rotatably supported by a support hole 11 provided in the valve chamber 6. The float 14 is connected to the lever 13, and a first valve body 20 and a second valve body 21 for opening/closing the first valve port 7 and the second valve port 8 are connected to the lever 13. The oscillating shaft 12 is formed to have a sectoral cross section, and the support hole 11 is formed to have a sectoral cross section with a larger central angle than that of the sectoral cross section of the oscillating shaft 12. When the lever 13 further rotates to a valve-closing direction from a position where the first valve body 20 and the second valve body 21 close the first valve port 7 and the second valve port 8, an upper stopper surface 22 contacted by an upper radial part of the sectoral cross section of the oscillating shaft 12 is formed at an upper radial part of the sectoral cross section of the support hole 11. COPYRIGHT: (C)2009,JPO&INPIT
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