| 摘要 |
PURPOSE:To finish a spoke part with high precision, by a method wherein the spoke part is covered with a heat-shrinkable sealing band and the same is cured through heating after a ring part, spoke part and boss part have been formed by rolling a resin impregnated long fiber round a reel. CONSTITUTION:A core material 11 of a steering wheel is formed by forming a spoke part 13 and boss part 14 by rolling a resin-impregnated long fiber round a rolling groove 5, with a U-shaped cross section of a reel 1 toward boss metal fittings 9 from a ring part 12 or a notched groove 6. Then a fiber bundle of the spoke part 13 is covered with a heat-shrinkable sheetlike sealing band 15 and both end surfaces the sealing bond confronting with each other are stuck. Then the same is heated. Simultaneously with cure of impregnating resin, sealing belt shrinks thermally, bubbles in liquid resin are removed along with improvement in fiber density of the spoke part and the spoke part whose surface is smooth and strength and accuracy are high is obtained.
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