To provide a front-wheel suspension mechanism that enables the low floor, low gravity, and small size of a tricycle of electric type or the like, is easily operated with an intuitive sense like a bicycle, excels in travel stability, and can be produced at a low cost.SOLUTION: In a front-wheel suspension mechanism 1, the lateral width of an arm portion 26 is longer than the lateral width of a vehicle body frame 6. A shaft portion 27 is coupled to the vehicle body frame 6 so as to freely rotate relatively. A turning mechanism 8 has a turning member 18 that is operated by a driver. By inclining the turning member 18 to the left and right, an arm portion 26 of a lower arm 25 keeps substantially horizontal relative to grounding surfaces of front wheels 3 and, at the same time, a floor plate 7, the vehicle body frame 6, and the pair of front wheels 3 incline in the same direction as an inclining direction of the turning member 18 by using, as an inclination fulcrum, the center axis of a shaft portion 27 located below the floor plate 7. By rotating the turning member 18 in a circumferential direction of a rotation shaft, the pair of front wheels 3 change a steering angle independently of the inclination.SELECTED DRAWING: Figure 2
【課題】電動式などの三輪車両の低床化、低重心化、および小型化が可能で、自転車のように直感的な運転操作がしやすく、走行安定性に優れ、低コストで生産可能な前輪懸架機構を提供する。【解決手段】前輪懸架機構1は、アーム部26の横幅が、車体フレーム6の横幅よりも長く、シャフト部27は、車体フレーム6に対して相対的に回動自在に連結され、転舵機構8は、運転者が操作する転舵部材18を有し、転舵部材18を左右に傾斜すると、ロアアーム25のアーム部26が前輪3の接地面に対して略水平を維持しつつ、床板7、車体フレーム6、および一対の前輪3が、床板7の下部に位置するシャフト部27の中心軸を傾斜の支点として転舵部材18の傾斜方向と同方向に傾斜し、転舵部材18を回転軸の周方向へ回転すると、一対の前輪3は、傾斜と独立して舵角が変化する。【選択図】図2
FRONT-WHEEL SUSPENSION MECHANISM AND TRICYCLE
前輪懸架機構および三輪車両
2022-03-04
Patent
Electronic Resource
Japanese