| 摘要 |
PROBLEM TO BE SOLVED: To provide both a tubular member equipped with a suitable profile cross-sectional shape in the case of forming a nesting stretching structural body such as the leg part of a tripod of fiber reinforced resin while controlling the increase of a manufacturing cost and a suitable manufacturing technique in the case of manufacturing the tubular member equipped with the profile cross section such as this and formed of fiber reinforced resin. SOLUTION: The tubular member 20 formed of fiber reinforced resin is equipped with a tubular shape having a profile cross section consisting of both a cylindrical shape part 21 extended in the direction of an axial line and a flat shape part 22 connected to the cylindrical shape part 21. The inner surface of the cylindrical shape part 21 is a cylindrical inner surface part 21a constituted of a recessed cylindrical surface. The outer surface of the cylindrical shape part 21 is a cylindrical outer surface part 21b constituted of a projected cylindrical surface. Further, the inner surface of the flat shape part 22 is a flat inner surface part 22a constituted of a plane. The outer surface of the flat shape part 22 is a flat outer surface part 22b constituted of the plane.
|
