| 摘要 |
PROBLEM TO BE SOLVED: To prevent the deterioration of drain capacity by suspending/projecting a presser piece for preventing warping-up deformation of a bottom from an overflow by abutting to a bottom part inside surface of a drainage guide member. SOLUTION: A drainage guide member 5 is composed of a flat almost rectangular box-shaped main body part 11 and a cylindrical connecting cylinder part 12, and the whole is integrally formed of a flexible material such as a soft synthetic resin and rubber. While, an overflow 2 and the drainage guide member 5 are connected by an almost cylindrical drain port tool 8, a bar piece 9 is installed/formed inside a cylindrical shape of the drain port tool 8, and a presser piece 7 is suspened/projected from the almost center of the bar piece 9. A plate- like abutting part 10 contacting in a plane with an inside surface of a bottom part 6 of the drainage guide member 5 is formed on the lower end of the presser piece 7. Since such constitution does not require a large piping space on the lower side of a bottom wall 3 of a bathtub 1, an arranging height of the bathtub 1 can be reduced. Since warping-up deformation of the bottom part 6 of the drainage guide member 5 can be prevented by the presser piece 7, the passage cross-sectional area can be secured. |
