| 摘要 |
<P>PROBLEM TO BE SOLVED: To relatively improve pressure resistance strength by greatly reducing stress generation in a circumference direction at a section where an inner passage hole and an inside outside communication hole crosses. <P>SOLUTION: A high pressure fluid accumulation vessel having the inner passage hole 2 accumulating pressure of high pressure fluid in an cylindrical pressure accumulation main body 1a formed in a longitudinal direction, and the inside-outside communication hole 3 passing through a thick wall part of the pressure accumulating vessel main body 1a and establishing communication between an inner circumference surface of the inner passage hole 2 and an outer connection part 1b of the pressure accumulation vessel main body 1a formed thereon is constructed. A cross section shape of a crossing section of the inside-outside communication hole 3 with at least the inner passage hole 2 is formed in an ellipse shape, and an major axis "a" and a minor axis b of the ellipse are positioned in a circumference direction of the inner passage hole 2 and a longitudinal direction of the inner passage hole 2 respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT |
