| 摘要 |
PURPOSE:To prevent water from leaking from between a seal member and an inserting part by peeling the synthetic resin layer of an end part, exposing the inner peripheral surface of a metallic tube, sticking a seal member having a cylindrical tongue piece to the metallic tube and expanding the diameter of the end part of a composite tube. CONSTITUTION:First, synthetic resin 13 and an adhesive layer 12 of one end part to form a facet part of the composite tube 10 is peeled by a prescribed length in the direction of the shaft and the inner peripheral surface of the metallic tube 11 is exposed by a prescribed length. Then, the outer peripheral surface of the seal member 20 is coated with adhesive and the seal member 20 is fitted into the end part of the composite tube 10. Then, the end part of the composite tube 10 to which the seal member 20 is stuck is mounted on a bulging machine 30 to bulge the diameter. In this way, stress remains in the inner part of the seal member 20 fitted to the end part of the composite tube 10 and is energized so that the tip part of the tongue piece 22 is contracted in diameter, accordingly, the tongue piece is stuck strongly to the outer peripheral surface of the inserting part and the seal effect by the seal member 20 is improved remarkably. |
