| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drainage structure of a bathtub which can inhibit water to pool on watertight pan. <P>SOLUTION: This drainage structure includes a watertight pan 11, a bathtub 12 with a drain outlet 12b established, a drainage instrument 13 arranged under and water tightly attached to the watertight pan 11 to cover an opening 11b of the watertight pan 11, a drainpipe 16 penetrating through the drain outlet 12b of the bathtub 12 to extend downward, a cap 15 with an opening 15a internally established which joins an outer rim 15b to the drainage instrument 13, and a screw fitting 17 screwed into a lower half side of the drainpipe 16 to contact a bottom rim on the opening 15a of the cap 15. The drainpipe 16 is inserted through the opening 15a of the cap 15. The cap 15 uses a flexible and water stop ring 15c to form the area between the outer rim 15b and the inner opening 15a, while the water tightly joining circumference of the opening 15a to the screw fitting 17 by narrowly pinching it between a lower circumference 12c on the drain outlet 12b of the bathtub 12 and the screw fitting 17. <P>COPYRIGHT: (C)2010,JPO&INPIT |
