The invention relates to a hydraulic transmission telescopic foot crank arm bicycle, and aims to solve the problem that a human body feels tired due to the fact that a foot crank arm is short, people want to ride at a high speed or climb a slope quickly and have to continuously step on the bicycle with force, and actually, a foot crank arm assembly is automatically positioned and stretched in a force application area. The device is automatically positioned, contracted and constant in a non-force-applying area, and comprises inner and outer slide rails, an inner crank and an outer crank (actually a connecting rod of a hydraulic or pneumatic transmission upper small piston) which are fixedly mounted at two ends of a middle axle housing of the bicycle and are parallel and alternately clung to each other, wherein the front half circle of the inner crank is elliptical and the rear half circle of the outer crank is the same as the upper half circle of a circle; a large idler wheel, a small idler wheel and a hydraulic (or pneumatic) transmission large air cylinder communicating vessel which are coaxially connected in parallel are assembled on the inner surface of the inner crutch, a small air cylinder assembly (a connecting rod on a piston of the small air cylinder is actually an outer crutch) is assembled on the outer surface of the inner crutch, and an inner transmission and a bicycle assembly are assembled in the center of the rear tire.
本发明涉及一种液压传动伸缩脚拐臂自行车,为解决现有常规人力自行车因脚拐臂短,人欲想高速骑行或快速爬坡,不得不用力连续猛踏,导致于人身感疲惫的问题,实为脚拐臂总成在施力区里自动定位伸长,在非施力区里自动定位收缩且恒定,其包括自行车中轴壳上两端上固装的前半周为椭圆形后半周为同一个圆上半圆的并列相间紧贴内外滑轨,内拐、外拐(实为液压或气压传动上小活塞的连杆),内拐内表面上配装有同轴上并联的大小滚轮及液压(或气压)传动大气缸连通器,内拐外表面上配装有小气缸总成(小气缸活塞上连杆实为外拐),后轮胎中央配装有内变速器,自行车总成。
Hydraulic transmission telescopic foot crank arm bicycle
液压传动伸缩脚拐臂自行车
2023-01-13
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
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