| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin ferrule joint structure hardly deformed even when used over a long period.SOLUTION: A resin ferrule joint structure includes a ferrule flange, and a backup flange for contacting with an outer surface of the ferrule flange. A surface for contacting with the backup flange of the ferrule flange has a projection-shaped part in an annular shape, a surface for contacting with the ferrule flange of the backup flange has a recessed-shaped part in an annular shape, and the projection-shaped part and the recessed-shaped part are fitted. |
