| 摘要 |
PROBLEM TO BE SOLVED: To execute certain and stable connection without any leakage due to looseness, by arranging screw in a circulating pass side hole continued to a pressure receiving seat surface formed of the through-hole of a main pipe rail having a circulating pass inside a shaft core, and screwing a screw surface arranged at an end by being continued to a pushing/ pressing seat surface on a branch connecting body side to a screw on a rail side. SOLUTION: In a main pipe rail 1 as a common rail, the shaft core inside thereof is formed to serve as a circulating pass 1', and a plurality of opened through-holes 1" pressure receiving seat surface 2 having an interval in an axial circumferential wall, is arranged to be communicated with the circulating pass 1'. A screw 2' is formed in a circulating pass side hole continued to this pressure seat surface 2. A branch connecting body 3 has a channel 3' communicated with the circulating pass 1' in its inside, and a screw surface 4 is arranged by being continued to the pushing/pressing seat surface 3" of the end of branch connecting body 3, then the pushing/pressing seat surface 3" is brought into contact with the pressure receiving seat surface 2 following to screwing and tightening of this screw surface 4 to a screw 2' on a rail side 1. Also, a lock function can be obtained by screwing a nut 6 into a reverse screw surface 4' arranged in the upper part on the outside of the pushing/pressing seat surface 3". |
