PROBLEM TO BE SOLVED: To provide a sprocket capable of suppressing a chain from coming off.SOLUTION: A sprocket for bicycle includes a sprocket body 12 having a rotational center axis, and a plurality of gears 14 comprising a first gear 24 having a first width in a rotational center axis direction and a second gear having a second width smaller than the first width in the rotational center axis direction. The plurality of gears 14 comprises a substrate 40, and a nickel plating layer 42 covering at least a part of the substrate 40 and containing at least one of phosphorous and boron.SELECTED DRAWING: Figure 7

    【課題】チェーン脱離を抑制可能なスプロケットを提供する。【解決手段】自転車用スプロケットは、回転中心軸心を有するスプロケット本体12と、回転中心軸心方向に第1の幅を有する第1の歯24、および回転中心軸心方向に第1の幅よりも小さい第2の幅を有する第2の歯を含む複数の歯14と、を備える。複数の歯14は、基体40、および、基体40の少なくとも一部を覆い、リンおよびホウ素の少なくとも一方を含有するニッケルめっき層42を含む。【選択図】図7


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    Title :

    SPROCKET FOR BICYCLE AND SPROCKET ASSEMBLY FOR BICYCLE


    Additional title:

    自転車用スプロケットおよび自転車用スプロケットアッセンブリー


    Contributors:

    Publication date :

    2018-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer / F16H Getriebe , GEARING / C23C Beschichten metallischer Werkstoffe , COATING METALLIC MATERIAL



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