PROBLEM TO BE SOLVED: To provide a bicycle of a two-front-wheel steering type which is easy to ride for elderly people, by allowing a standing posture of the bicycle to be kept without being overturned when getting on the bicycle in a stopped state, and by mechanically inclining a bicycle body in a turning direction in response to steering of a handle and thereby enabling stable curve traveling.SOLUTION: In a two-front-wheel bicycle, a mechanism is provided in which, in leftward steering of a handle 11, a rod end Brg25 coupled to a pitman arm 21 fixed to a steering shaft 13 via a coupling collar 22 turns leftward, which causes a coupling tool 26 to move interlockingly therewith to cause a coupling member 24 fixed to a swing arm 31 to operate leftward, then the swing arm 31 swings and causes a coupling rod 46S coupled to the pitman arm 21 with a link ball Brg45 to move leftward simultaneously with inclination of a bicycle body 1 to turn a knuckle arm 44, and the coupling rod 46L moves leftward to turn front wheels 15L, 15R leftward. In this mechanism, unsteadiness of the bicycle body 1 is suppressed so that the bicycle body can be mechanically inclined in the turning direction, thereby enabling stable curve traveling.SELECTED DRAWING: Figure 9

    【課題】停車状態の乗車でも転倒することなく、直立姿勢が保持でき、ハンドルの操舵に応じて旋回方向へ機械的に車体を傾斜させ、安定したカーブ走行を可能にして、高齢者が乗り易い前二輪操舵の自転車にする。【解決手段】ハンドル11の左方への操舵で、操向軸13に固着されたピットマンアーム21に、連結カラー22を介して連結されたロッドエンドBrg25が左方に回動し、連結具26が連動して揺動アーム31に固定された連結部材24が左方に作用し、揺動アーム31の揺動で、車体1の傾斜と同時にピットマンアーム21にリンクボールBrg45で連結された連結棒46Sが左方に移動してナックルアーム44Lを回動させ、連結棒46Lが左方に移動して前輪15L,15Rを左に旋回させる機構により、車体1のブレが抑止されて旋回方向へ機械的に傾斜でき、安定したカーブ走行を可能とする。【選択図】図9


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    Title :

    BICYCLE BODY INCLINATION DEVICE FOR TWO-FRONT-WHEEL BICYCLE


    Additional title:

    前二輪自転車旋回時の車体傾斜装置


    Contributors:

    Publication date :

    2017-06-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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