| 摘要 |
PROBLEM TO BE SOLVED: To provide a toilet seat unit, where a toilet seat body and a toilet seat baseplate of different material quality are joined with uniform and reliable joint strength and with uniform and reliable sealing performance.SOLUTION: In the toilet seat unit including the toilet seat body and the toilet seat baseplate of different material quality, an annular projection part is formed on an inner peripheral part or an outer peripheral part of one of the toilet seat body and the toilet seat baseplate, an annular concave groove part is formed on an inner peripheral part or an outer peripheral part of the other, an adhesive is applied to the concave groove part to adhere and joint the projection part to the concave groove part, a convex locking part is formed in the toilet seat body or on the toilet seat baseplate where the projection part is formed, a concave locking part is formed in the toilet seat body or on the toilet seat baseplate where the concave groove part is formed, and the convex locking part is locked to the concave locking part for locking and joining. |
