To improve the shape accuracy of a bicycle frame.SOLUTION: A bicycle frame 10 includes: a head tube 1; a rear-wheel support portion 3 supporting an axle of a rear wheel of a bicycle; a long tube 2 formed of one tube extending from the head tube 1 to a rear-wheel support portion 3 without including a joint portion; and a seat tube 4 supported by the long tube 2 and extending upward from between a front end and a rear end of the long tube, as viewed from rightward and leftward directions.SELECTED DRAWING: Figure 1

    【課題】自転車のフレームの形状精度を高める。【解決手段】自転車のフレーム10は、ヘッドチューブ1と、自転車の後輪の車軸を支持する後輪支持部3と、ヘッドチューブ1から後輪支持部3まで接合部を含まないで延びる一本のチューブで形成されたロングチューブ2と、ロングチューブ2に支持され、左右方向から見てロングチューブの前端と後端との間から上方に延びるシートチューブ4と、を備える。【選択図】図1


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    Title :

    BICYCLE FRAME AND BICYCLE


    Additional title:

    自転車のフレーム及び自転車


    Contributors:

    Publication date :

    2025-04-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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