PROBLEM TO BE SOLVED: To provide a pneumatic radial tire which comprises a bead core structurally constituted by annularly winding at least one bead wire in a circumferential direction of the tire, and which inhibits lifting of a bead wire terminal and bead core malformation caused by it.SOLUTION: In a pneumatic radial tire, a bead core 5, in which at least one bead wire 50 is annularly wound around each pair of bead parts 3 in a circumferential direction of the tire, is embedded. A winding starting end 51 and a winding finish end 52 of the bead wire 50 overlap each other on the periphery of the bead core 5, and the bead wire 50 is bound by a cord-like binding member 10 made of organic fibers, in at least two locations within an overlapping area S in which the winding starting end 51 and the winding finish end 52 of the bead wire 50 overlap each other.SELECTED DRAWING: Figure 2

    【課題】少なくとも1本のビードワイヤをタイヤ周方向に環状に巻回して構成された構造のビードコアを備えた空気入りラジアルタイヤであって、ビードワイヤの端末の浮きやそれに起因するビードコアの形状不良を抑制した空気入りラジアルタイヤを提供する。【解決手段】一対のビード部3にそれぞれ少なくとも1本のビードワイヤ50をタイヤ周方向に環状に巻回させて構成されたビードコア5が埋設された空気入りラジアルタイヤにおいて、ビードワイヤ50の巻き始め端51と巻き終わり端52とをビードコア5の周上で重複させ、ビードワイヤ50の巻き始め端51と巻き終わり端52とが重複した重複領域S内の少なくとも2箇所においてビードワイヤ50を有機繊維からなる紐状の結束部材10によって結び留める。【選択図】図2


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    Title :

    PNEUMATIC RADIAL TIRE


    Additional title:

    空気入りラジアルタイヤ


    Contributors:

    Publication date :

    2018-11-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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