To provide a tire for a tricycle reducing pattern noise while decreasing a demerit of increased weight compared with a conventional tire.SOLUTION: A tire for a tricycle comprising a combination of front two wheels and one rear wheel, or a combination of one front wheel and two rear wheels, is to be attached onto two wheel side. A ratio Ns/Nc of a negative ratio in a center region Nc and a negative ratio of a shoulder region satisfies a relationship represented by a formula: Ns/Nc≥2.5, where the center region C ranges from a tire equator to 1/2 of a half width TW/2 of a periphery length of a tread surface; the half width TW/2 of the periphery length of the tread surface is a length measured along a tire surface in a tire width direction from the tire equator CL to the tread end TE; and the shoulder area S ranges from the 1/2 of the half width TW/2 of the periphery length of the tread surface to the tread end.SELECTED DRAWING: Figure 2

    【課題】従来タイヤと比較した重量増のデメリットを低減しつつ、パターンノイズの低減を図った三輪車用タイヤを提供する。【解決手段】フロント二輪リア一輪またはフロント一輪リア二輪から構成される三輪車における、二輪側に装着される三輪車用タイヤである。タイヤ赤道CLからトレッド端TEまでタイヤ幅方向にタイヤ表面に沿って測った長さをトレッド踏面のペリフェリ長さの半幅TW/2として、タイヤ赤道から、トレッド踏面のペリフェリ長さの半幅TW/2の1/2までの範囲をセンター領域C、トレッド踏面のペリフェリ長さの半幅TW/2の1/2からトレッド端までの範囲をショルダー領域Sとしたとき、センター領域のネガティブ比Ncと、ショルダー領域のネガティブ比Nsとの比Ns/Ncが、下記式、Ns/Nc≧2.5で示される関係を満足する。【選択図】図2


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    Title :

    TIRE FOR TRICYCLE


    Additional title:

    三輪車用タイヤ


    Contributors:

    Publication date :

    2019-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen



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