| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage device capable of achieving complete water leakage prevention by eliminating parts to be tightened by nuts from a communicating connection from a waste storage part to a floor riser pipe, conforming to the Housing Performance Indication Standard of Japan, easily adjusting misalignments with the floor riser pipe, extremely easily executing drainage, and reducing costs. SOLUTION: Both the waste storage part mounted to a bottom part of a sink and a wash place and a drain trap part communicatingly connected to the waste storage part are integrally formed. A terminal part of the drain trap part is communicatingly connected to a sewer pipe by a flexible pipe comprising both a soft part and a had part and having a smooth inner surface to constitute the drainage device. COPYRIGHT: (C)2007,JPO&INPIT
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