| 摘要 |
PROBLEM TO BE SOLVED: To provide a toilet seat unit capable of enhancing joint strength, air tightness, and liquid tightness, or capable of ensuring designability of appearance.SOLUTION: The toilet seat unit includes a toilet seat front member, and a toilet seat rear member. One of the toilet seat front member and the toilet seat rear member includes annular projection parts provided at an inner peripheral side and an outer peripheral side, respectively. The other of the toilet seat front member and the toilet seat rear member includes annular recessed parts that are provided at an inner peripheral side and an outer peripheral side, respectively, and are engageable with the projection parts. A convex rib is provided on one of a sidewall at a rear side of the projection parts and a sidewall at a rear side of the recessed parts. While the projection parts are being engaged with the recessed parts, the convex rib allows at least one portion of the sidewall at the front side of the projection parts to abut on the sidewall at the front side of the recessed parts. An adhesive interposed between the projection parts and the recessed parts joins the toilet seat front member to the toilet seat rear member. |
