BICYCLE FRAME USING CARBON FIBER REINFORCED PLASTICS

摘要

A bicycle frame using a carbon-fiber reinforced composite material is formed into a flat plate shape with a front part of which a thickness is the same and a rear part of which a thickness becomes narrower. The bicycle frames in a pair are coupled to face each other, thereby forming a receiving space receiving a rear wheel and supporting a bicycle. The bicycle frame using the carbon-fiber reinforced composite material includes a front surface facing a front side of the bicycle and parallel to a handlebar; a rear surface arranged to be parallel to the front surface in a side opposite to the front surface and smaller than the front surface; an upper surface connected to an upper part of the rear surface, corresponding to the rear part, and having a width becoming narrower to a rear side; a front inclined surface arranged in the front surface between the front surface and the upper surface to be inclined and having a uniform width; and a second inclined surface arranged in the rear part between the rear surface and a bottom surface to be inclined and having a width becoming narrower to a rear side. The purpose of the present invention is to provide the bicycle frame using the carbon-fiber reinforced composite material of which a manufacturing method simple.