| 摘要 |
PROBLEM TO BE SOLVED: To prevent the intrusion of welding burr into a pipe body inner hole by providing a major diameter part on one end opening of a bottomed cylindrical resin-made pipe body having a plurality of fuel injection valve mounting holes, and providing an annular recessed part on one side surface of a plug for the connection of the plug fitted thereto by ultrasonic welding. SOLUTION: The bottomed cylindrical pipe body 10 of a fuel delivery pipe has three fuel injection valve mounting holes 12-14 and a fuel feed port 15 formed in the longitudinal direction. A major diameter part 16 is formed on the opening-side end part of the pipe body 10, and an axially protruding annular protruding part 19 is formed on a stepped part 18 between a major diameter hole 17 formed on the major diameter part 16 and an inner hole 11. The major diameter hole 17 is blocked by liquid-tightly connecting a disc-like plug 20 thereto. At this time, an annular recessed part 21 for fitting the annular protruding part 19 and a protruding part 22 to be fitted to the inside surface of the annular protruding part 19 are formed on the inside surface of the plug 20 to prevent the intrusion of welding burr generated at the welding of the plug 20 to the major diameter part 16. |
