The invention discloses a chainless lever bicycle which comprises a bicycle frame, and pedals are arranged on the bicycle frame; a plum-blossom-shaped cam is rotatably connected to the pedals in a sleeving manner; a sliding groove is formed in the plum-blossom-shaped cam; a roller is arranged in the sliding groove, another roller abuts against the plum-blossom-shaped cam, the two rollers are rotatably connected with first rotating rods in a sleeving mode, a fixing rod is fixed to one ends of the two first rotating rods together, a bearing rod is fixed to the bicycle frame, a sleeve is fixed tothe lower end of the bearing rod, and a moving rod is slidably connected into the sleeve. The chainless lever bicycle can be forwards pedaled and backwards pedaled by pedaling the pedals, so that thechainless lever bicycle can be backwards pedaled after pedaling half of the pedals, the bicycle speed is guaranteed, a good labor-saving effect is achieved, stepless speed change is achieved, redundant gears are not needed in the middle, the cost is saved, the manufacturing cost is low, and the efficiency is high.
本发明公开了一种无链条杠杆自行车,括车架,所述车架上设有脚蹬,所述脚蹬上转动套接有梅花型凸轮,所述梅花型凸轮上设有滑动槽,所述滑动槽内设有一个滚轮,所述梅花型凸轮上抵触有另一个滚轮,两个滚轮上均转动套接有第一转动杆,两个第一转动杆的一端共同固定有固定杆,所述车架上固定有承载杆,所述承载杆的下端固定有套管,所述套管内滑动连接有移动杆。本发明可以进行正反蹬动踏板都可以使自行车向前,所以蹬到一半也可以返回蹬,从而保证车速,具有很好的省力效果,同时达到了无级变速,中间不需要多余的齿轮,节省成本,造价低,效率高。
Chainless lever bicycle
一种无链条杠杆自行车
2020-07-28
Patent
Elektronische Ressource
Chinesisch