| 摘要 |
PROBLEM TO BE SOLVED: To prevent water leakage even if flushing water ejected from a water supply hose flows backward. SOLUTION: A tube body 1 is provided in the state of vertically protruding toward the outside of a case 32 from an outer peripheral edge of a pull-out hole 12; flat plate-like packing 2 with elasticity, in which an insertion hole 3 is formed in a central portion, is fixed to the top surface of the rear of a toilet bowl body 21 in such a manner that the insertion hole overlaps the insertion hole 13; the outside diameter of the tube body is set smaller than the diameter of the insertion hole; the diameter of the insertion hole is set smaller than the outside diameter of the tube body; the tube body is inserted into the insertion hole from above; the diameter of the insertion hole is enlarged by the elasticity of the packing; the packing is pushed for elongation, and deflected downward for adhesion to an outer peripheral surface of the tube body; and in this state of adhesion, the tube body and the periphery of the insertion hole of the packing are inserted into the insertion hole, so that the insertion hole can be sealed with the tube body and the packing. COPYRIGHT: (C)2008,JPO&INPIT
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