To provide a front two-wheel bicycle that enables a senior citizen to easily get thereon and easily handle it, by holding a vertical posture without being turned over even when getting thereon in the stop state, in which a vehicle body is mechanically tilted to a turning direction according to the steering of handlebars, and thereby a stable traveling is enabled on a curved road.SOLUTION: The front two-wheel bicycle has a configuration such that a rotary metal fitting to which a pitman arm 32 is fixed is connected to a holding body 25 of a front-wheel support frame 2 in which front wheels 16L and 16R are arranged on the right and left, a linear bush 44 incorporating a slide shaft is connected to a swing arm 41 fixed to a handle post 13, and the slide shaft and a rear part of the pitman arm 32 are connected by an L-shaped link ball 52S. With this configuration, the pitman arm 32 rotates leftward by steering a handle 12, connection rods 36M, 36L are moved leftward to rotate a knuckle arm 33L, at the same time, the linear bush 44 is moved, and the handle post 13 and a vehicle body 1 are tilted leftward by swinging the swing arm 41.SELECTED DRAWING: Figure 2
【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、ハンドルの操舵で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と、高齢者が乗り易く、取り扱いが容易な前二輪自転車を安価に提供する。【解決手段】前輪16Lと16Rが左右に配置された前輪支持フレーム2の保持体25に、ピットマンアーム32が固着された回動金具が連結され、ハンドルポスト13に固着された揺動アーム41に、スライド軸を内蔵したリニアブシュ44が連結され、該スライド軸と、ピットマンアーム32の後部がL型リンクボール52Sで連結された構成により、ハンドル12の操舵で、ピットマンアーム32が左方へ回動し、連結棒36Mと、36Lが左方に移動してナックルアーム33Lを回動させると同時に、リニアブシュ44が可動し、揺動アーム41を揺動させてハンドルポスト13と車体1を左方に傾斜させる構造とする。【選択図】図2
FRONT TWO-WHEEL BICYCLE HAVING VEHICLE BODY TILTING DEVICE
車体傾斜装置を有した前二輪自転車
25.01.2023
Patent
Elektronische Ressource
Japanisch
IPC: | B62K Fahrräder , CYCLES |
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