To prevent or suppress failure occurrence of a bead core due to separation of a coating rubber from a wire in a pneumatic tire.SOLUTION: A bead core 6 of a green tire 1 includes: a plurality of bead wires 8 arranged at intervals in the width direction and the radial direction of the bead core 6 in a cross section in the width direction of the bead core 6; and a coating rubber 9 filled between the bead wires 8. An outside surface 6a in the radial direction of the bead core 6 has a projecting shape outward in the radial direction in the cross section in the width direction of the bead core 6. An inside surface 6b in the radial direction of the bead core 6 has a projecting shape inward in the radial direction in the cross section in the width direction of the bead core 6.SELECTED DRAWING: Figure 1

    【課題】空気入りタイヤにおける被覆ゴムとワイヤとのセパレーションによるビードコアの故障発生を防止ないし抑制する。【解決手段】グリーンタイヤ1のビードコア6は、ビードコア6の幅方向の断面においてビードコア6の幅方向及び径方向に間隔をあけて配置された複数本のビードワイヤ8と、ビードワイヤ8間に充填された被覆ゴム9とを備える。ビードコア6の径方向の外側面6aは、ビードコア6の幅方向の断面において、径方向外向きに突状である。ビードコア6の径方向の内側面6bは、ビードコア6の幅方向の断面において、径方向内向きに突状である。【選択図】図1


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    Title :

    GREEN TIRE AND MANUFACTURING METHOD OF PNEUMATIC TIRE


    Additional title:

    グリーンタイヤ及び空気入りタイヤの製造方法


    Contributors:

    Publication date :

    2019-06-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand



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