| 摘要 |
PROBLEM TO BE SOLVED: To provide an incore that prevents water from remaining in a space between outer periphery of a cylindrical part and an inner periphery of a pipe during usage and solves the sanitary problem.SOLUTION: An incore 10 includes a flange 12 where an end face of a resin pipe 14 comes in contact with one end of a cylindrical part 11 inserted into the end of a resin pipe 14. While being inserted into the end of the resin pipe 14, the incore is attached to inside of a cylindrical joint by insertion. A projection 17 extending in an axial direction of the cylindrical part 11 is provided at an outer periphery of the cylindrical part 11. At the end face 12a of the flange 12, when the end face of the resin pipe 14 comes in contact, a protrusion 18 for forming a space between the inner end face 12a of the flange 12 and the end face of the resin pipe 14 is provided. The protrusion 18 is provided on the surface passing the extended line of the projection 17 and an axial line of the cylindrical part 11, and is formed to have a slant shape with the height increasing toward the side of the flange 12. |
