| 摘要 |
PROBLEM TO BE SOLVED: To enable the fine regulation of the height of a bathtub after installation of the bathtub by screwing bolts into the threaded holes disposed in the bottom of the bathtub, supporting the bottom of the bathtub by these bolts and make it possible to adjust the height of the bathtub by the screwing depth of the bolts. SOLUTION: The bottom 11 of the bathtub 1 made of FRP is projectingly provided with a short cylindrical part 12 on the lower side. Metallic nuts 2 are mounted to the inside surface at the bottom end of the short cylindrical part 12 and the bolts 3 are screwed into the nuts 2. The bottom 11 of the bathtub 1 is supported by the bolts 3. The top end faces of the bolts 3 are bored with screwdriver insertion grooves 31. The screwing depth may be increased or decreased and the height may be regulated by inserting a screwdriver tool into the screwdriver insertion grooves 31. Then, the fine regulation of the heights after the installation of the bathtub 1 is made possible. Since external threaded parts 51 of a decorative cover 5 are screwed into internal threads 13 above the short cylindrical part 12, the heads of the bolts 3 are concealed by the decorative cover 5 and a good appearance is obtained. |
