| 摘要 |
PROBLEM TO BE SOLVED: To provide a fiber-reinforced resin gear increased in the strength of teeth, and a method for manufacturing the gear. SOLUTION: This gear 1 includes: tooth mold forming portions 3 having corrugated cross-sectional surfaces formed of surfaces 31 composing uneven surfaces of teeth 2 and rear surfaces 35 having shapes along the unevenness of the surfaces 31, and formed of fiber-reinforced resin P with fiber F orientated in a tooth alignment direction and along a corrugated shape; and a base 4 retaining the tooth mold forming portions 3 from the rear surfaces 35. The gear 1 is so manufactured that the base 4 having a shape along the uneven surfaces of the teeth 2 is arranged with respect to an upper mold having an inner surface formed into the shape for the uneven surfaces of the teeth 2 of the gear 1 to be formed, the fiber-reinforced resin P is injected in the tooth alignment direction and along the corrugated shape into a corrugated cross-sectional space formed of the upper mold and base 4, and the tooth mold forming portions 3 are integrally formed with the base 4. COPYRIGHT: (C)2010,JPO&INPIT
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