The invention discloses an up-down treading type speed change device of a bicycle, the up-down treading type speed change device is arranged on the bicycle, and the up-down treading type speed change device comprises a transmission mechanism and a control mechanism; one end of the rear axle is installed on the rear wheel through a second bearing, the rear wheel is sleeved with the fixing piece, the fixing piece is sleeved with the fixing sleeve, and a set of concave-convex grooves are evenly distributed in the bottom face of the foot rest lever. A handlebar rod is provided with a fixing piece, the fixing piece is sleeved with a rotating handle, a right foot rest lever is provided with a fifth pulley, a left foot rest lever is provided with a sixth pulley, the right foot rest lever and the left foot rest lever are each provided with a steel wire sleeve, the rotating handle is wound with a steel wire, the steel wire passes through the steel wire sleeve and the steel wire sleeve and winds around the fifth pulley and the sixth pulley, and a first sliding block is hung on the steel wire of the right foot rest lever. A second sliding block is hung on the steel wire of the left foot rest lever. According to the up-down treading type speed change device of the bicycle, gear shifting is smooth and rapid, and rotation is noiseless.

    本发明公开了自行车上下踩踏式变速装置,在自行车上安装上下踩踏式变速装置,所述的上下踩踏式变速装置包括传动机构和控制机构;后车轴一端通过二号轴承安装在后车轮上,固定件套装在后车轮上,固定套套装在固定件上,脚踏杆的底面上均匀分布一组凹凸槽;车龙头杆上安装固定件,固定件上套装转把,右脚踏杆上安装五号滑轮,左脚踏杆上安装六号滑轮,右脚踏杆和左脚踏杆上都安装钢丝套管,转把绕上钢丝,钢丝通过钢丝套、钢丝套管绕过五号滑轮和六号滑轮,右脚踏杆的钢丝上悬挂一号滑块,左脚踏杆的钢丝上悬挂二号滑块。本发明自行车上下踩踏式变速装置,变档平顺快速,转动无声响。


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    Title :

    Up-down treading type speed change device of bicycle


    Additional title:

    自行车上下踩踏式变速装置


    Contributors:

    Publication date :

    2023-04-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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