| 摘要 |
PURPOSE:To obtain a lightweight steering wheel with satisfactory torsional rigidity by a method wherein a ring part and a spoke part are formed by winding resin-impregnated fiber on a take-up jig and to a boss piece and coating fiber bundles are diagonally wound around the spoke part and resin impregnated in the fiber is hardened by heating. CONSTITUTION:A ring part 6 is laminated by winding resin-impregnated fiber bundle 5 on a take-up jig 1 by rotating a rotary shaft 3, while a spoke part 8 is laminated by winding the bundle 5 from one notched part 7 to a boss piece 4 and back to the other notched part 7 and on the jig 1. Further, coating fiber bundles 12 and 13 are laminated by respectively spanning to spacers 10 and 11 of a supporting plate 9 in the same manner as mentioned above with respect to the boss piece 4. After the rotary shaft 3 is removed, the fiber bundle 12 is wound around the spoke part 8 in a counterclockwise direction with respect to the boss piece 4 so as to make a helix angle of +alpha deg. to the axis line of the spoke part 8. Further, after that, the fiber bundle 13 is wound also around the spoke part 8 in a clockwise direction with respect to the boss piece 4 so as to make a helix angle of -beta deg. to the axis line of the spoke part 8 in order for its end part 15 to hook to the boss piece 4 finally. After the completion of the formation of the spoke part, the rotary shaft 3 is assembled to the take-up jig by inserting the boss piece 4 onto the tip part of the rotary shaft 3. After that, impregnated resin is hardened by heating in order to obtain a reinforced body by releasing from a mold. |
