Patent ID: 9562321
Date: 2017-02-07
CPC Classifications: D07B,F16G

Claim:
1. An end fixing structure of a composite wire rod formed by converting continuous fiber into composite fiber using resins and molding the composite fiber like a stranded wire, the end fixing structure comprising: a wedge body formed in a cylindrical shape, wherein an outside diameter of the wedge body expands from a tip portion subject to a tensile force toward a back end portion on a fixed side, and wherein the wedge body has an engaged portion on an inner wall surface thereof, the engaged portion having a shape that conforms to an outer surface of the composite wire rod for engagement with the composite wire rod; and a sleeve provided on an outer circumferential side of the wedge body and having an internal structure of a conical hollow whose diameter expands toward the back end portion on the fixed side of the wedge body, wherein the wedge body is formed from a plurality of divided wedge bodies divided in a circumferential direction and formed with divided surfaces opposed to each other and having a gap therebetween, wherein the inner wall surface of each of the plurality of divided wedge bodies is formed from a fine irregular surface, wherein a surface roughness of irregularities on the inner wall surface of each of the plurality of divided wedge bodies is in a range of 60 to 500 μm, and wherein a length of the wedge body is 72 to 134% of a pitch of a side wire.