PROBLEM TO BE SOLVED: To provide a vertically movable bicycle crank that has not been available in the past.SOLUTION: Out of attachment holes 9 and 9A formed in the upper distal end and lower distal end of a hydraulic damper 3, the upper hole 9 is aligned with a convex part 11 formed on one of upper members 4 of upper members 2 of a pair of cranks constituting a vertically movable bicycle crank in the inside of the upper member. A columnar pin 10 is inserted into the other hole 9A through a hole 4C formed outside the member 4A inside an opening of the member 2A. Thus, the vertically movable bicycle crank that is vertically movable owing to the action of the hydraulic dumper 3 is provided.SELECTED DRAWING: Figure 8

    【課題】従来、上下動可能な自転車用クランクはなかった。【解決手段】上部部材の内側に上下動可能な自転車用クランクを構成する一対のクランクの上部部材2に油圧ダンパー3の上部先端部及び下部先端部に設けられている取り付用に9及び9Aの穴の、上部穴9を部材2の上部部材4に設けられている凸部11に取付けて、もう一方の9Aの穴を、部材2Aの開口部内側に、部材4Aの外側に設けている穴4Cより円柱ピン10を挿入取り付けることにより、前記油圧ダンバー3の作用により上下動可能に構成した上下動可能な自転車用クランを提供する。【選択図】 図8


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    Title :

    VERTICALLY MOVABLE BICYCLE CRANK


    Additional title:

    上下動可能な自転車用クランク


    Contributors:

    Publication date :

    2018-05-24


    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



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