| 摘要 |
PURPOSE:To increase the torsional strength at the joint part of a fiber-reinforced synthetic resin pipe with a metal joint member by forming said joint part from the inside layer and the outside layer which are formed by winding each specific fiber body within a specific angle range. CONSTITUTION:The resin pipe 2 of a driving shaft 1 made of fiber-reinforced synthetic resin is constituted of an inside layer 6 wound with a continuous carbon-fiber body coated with resin within a winding angle of 45-75 deg. (preferably 50-60 deg.) with respect to the axis line of the driving shaft 1 made of resin and an outside layer 7 which is positioned on the outer periphery of said inside layer 6 and wound with a continuous fiber which is resin-coated and has a thermal expansion rate larger than that of carbon fiber, e.g., glass fiber, polyester fiber, or aramide fiber in a winding angle within a range of 5-40 deg. (Preferably 15- 35 deg.) with respect to the axis line. The joint part of such a resin pipe 1 has an exceedingly small residual stress on jointing, on the basis of each anisotropy of the inside layer 6 and the outside layer 7, and the torsional strength at the joint part is exceedingly high. |
