| 摘要 |
PROBLEM TO BE SOLVED: To provide a double-walled pipe member which shows high torsion rigidity and deflection rigidity and also high mechanical strength, and a method for molding this double-walled pipe member. SOLUTION: This method molds the double-walled pipe member which reinforces a first cylindrical member 11 with a second cylindrical member by injecting a molten resin 27 to the outer peripheral side of the first cylindrical member 11 molded in a resin beforehand, then curing the resin and insert-molding the first cylindrical member 11 inside the second cylindrical member. A boss 14 is formed in the way that it is high enough to come into contact with the inner surface 25 of a mold 21 when closed and becomes one piece with the interior of a cross section orthogonal with the axial direction of the first cylindrical member 11. The second cylindrical member 12 is formed by filling a cavity 26 between the outer peripheral surface of the first cylindrical member 11 and the inner surface 25 of the mold 21 with the molten resin 27 and curing it. Thus the second cylindrical member covers the first cylindrical member 11. COPYRIGHT: (C)2004,JPO&NCIPI |
