| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a drain pipe in a tank body, which can properly discharges overflowed drain water without providing a ventilation hole or the like in an overflow pipe, in the drain pipe in the tank body for draining the overflowed water without forming an overflow drain port formed in the tank body such as a washstand, a sink and a bathtub. <P>SOLUTION: The drain pipe for drainage from the tank body B includes: the drain pipe 5 communicating with the drain port 1 opened on the bottom surface of the tank body B; a block valve 2 blocking a flow channel inside the drain pipe 5; the overflow pipe 3 sealed to the inside and outside of the drain pipe branched upstream of the block valve 2 of the drain pipe 5, with its part disposed above the bottom surface of the tank body B and folded back below the upper edge of the tank body B to be connected to the downstream side of the block valve 2; and a non-sealing-water-type drain trap 10 provided downstream the merging portion of the drain pipe with the overflow pipe 3, and having no water sealing. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
