To provide a front two-wheel tricycle capable of increasing the degree of freedom for design matters relating to front two-wheels upon maintaining the linear traveling performance while enhancing the steering property.SOLUTION: A front two-wheel tricycle 11 includes: a handle shaft body 25 which is supported by a head tube 15a of a frame 15 so as to be freely rotatable around a steering axis line Sx displaced backward as becoming apart from the ground; a seesaw member 27 which is supported by the handle shaft body 25 below the head tube 15a so as to be freely rotatable around an axial line Lx extending forward and downward, and supports, to right and left ends, a right front wheel 12b and a left front wheel 12a, respectively, so as to be freely displaceable in a vertical direction relative to the handle shaft body 25; and a link mechanism 28 which controls respective camber angles of the right front wheel 12b and the left front wheel 12a in accordance with the vertical displacement of the right front wheel 12b and that of the left front wheel 12a.SELECTED DRAWING: Figure 1
【課題】操舵性を高めながら直進性の維持にあたって前二輪に関する設計事項の自由度を広げることができる前二輪三輪車を提供する。【解決手段】前二輪三輪車11は、地面から離れるに従って後方に変位する操舵軸線Sx回りで回転自在にフレーム15のヘッドチューブ15aに支持されるハンドル軸体25と、前下がりに延びる軸線Lx回りに回転自在にヘッドチューブ15aの下方でハンドル軸体25に支持され、左右端に、ハンドル軸体25に対して上下方向に変位自在に左前輪12aおよび右前輪12bを支持するシーソー部材27と、左前輪12aおよび右前輪12bの上下方向変位に応じて左前輪12aおよび右前輪12bのキャンバー角を制御するリンク機構28とを備える。【選択図】図1
FRONT TWO-WHEEL TRICYCLE
前二輪三輪車
2022-07-01
Patent
Electronic Resource
Japanese
IPC: | B62K Fahrräder , CYCLES |