PROBLEM TO BE SOLVED: To make the thickness of a tread below a sub-groove uniform by improving accuracy in adjustment of an amount of rubber compressed into the sub-groove.SOLUTION: A pneumatic tire 1 comprises: in a tread part 2, a plurality of main grooves 22 extending along a tire circumference and arranged in a tire width direction; a plurality of land parts 23 sectioned by the main grooves 22 and extending along the tire circumference; sub-grooves 24 intersecting and extending across the land parts 23 in the direction of the tire circumference; and spews 10 formed on the tread face 21 of the land parts 23. For each sub-groove 24 of a specific land part 23, spews 10 are formed with a same diameter within a range S of 500% distance of the groove width L of each sub-groove 24 from the open edge of each sub-groove 24. The wider the groove width L of each sub-groove 24 is, the number of spews 10 is greater.SELECTED DRAWING: Figure 2

    【課題】副溝におけるゴムの押し込まれ量の調整の精度を向上して副溝の溝下のトレッド厚みを均一化すること。【解決手段】トレッド部2に、タイヤ周方向に沿って延在しタイヤ幅方向に複数並ぶ主溝22と、主溝22により区画形成されてタイヤ周方向に沿って延在する複数の陸部23と、陸部23に対してタイヤ周方向に交差して延在する副溝24と、陸部23のトレッド面21に形成されたスピュー10と、を備える空気入りタイヤ1において、所定の陸部23の各副溝24に対し、各副溝24の開口縁から各副溝24の溝幅Lの500%の距離の範囲S内にてスピュー10が同径に形成されており、かつ副溝24の溝幅Lが大きいほど、スピュー10の数が多い。【選択図】図2


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    Titel :

    PNEUMATIC TIRE AND TIRE MOLDING DIE


    Weitere Titelangaben:

    空気入りタイヤおよびタイヤ成形金型


    Beteiligte:
    HARADA TOSHIYA (Autor:in)

    Erscheinungsdatum :

    2017-03-16


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen / B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS



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