Portable four-link folding up- and down-pedaling bicycle

Abstract

A portable four-link folding up- and down-pedaling bicycle comprises a four-link folding bicycle beam, a front head pipe, a rear inclined pipe, a seat pipe, a saddle, a front fork component, a rear frame, a V-shaped folding handlebar, a front wheel, a rear wheel and a driving mechanism, wherein the four-link folding bicycle beam is formed by connecting a folding seat, a front beam pipe, a rear beam pipe, a rotating vane, a groove-shaped folding piece, a thick-walled round pipe, a bicycle beam locking hook and links; the four-link folding bicycle beam is welded on the front head pipe and the seat pipe; the rear inclined pipe is welded on the seat pipe; the rear frame is welded on the rear inclined pipe; the rear wheel is mounted on a left rear fork piece and a right rear fork piece of the rear frame; the driving mechanism is mounted on a bearing support and a positioning shaft of the rear frame; the front fork component comprises a front wheel fork and a front fork pipe fitting; the front wheel fork can be folded with the front fork pipe fitting; the front fork pipe fitting is rotationally connected with the front head pipe; the lower end of the front wheel fork is connected with the front wheel; the saddle is arranged on the seat pipe; the V-shaped folding handlebar is connected with a front wheel frame; and the driving mechanism comprises a left crankshaft, a right crankshaft, a crankset, two pedal levers, two pedals, a flywheel and a chain.

Description

technical field [0001] The invention relates to a foldable portable bicycle, in particular to a four-link foldable up and down pedal portable bicycle. technical background [0002] The up and down pedal type folding bicycle designed by the designer earlier can be folded, but due to reasons such as structure and structure, it has not been able to achieve the smaller satisfactory effect after folding. Contents of the invention [0003] The purpose of the present invention is to provide a kind of vehicle beam that is four-link folded, and the driving wheel is arranged on the front wheel——four-link folded up and down stepping type portable bicycle. The purpose of the present invention is achieved in that four-link folding up and down stepping type portable bicycle comprises four-link folding beam, front head tube, rear inclined tube, seat tube, saddle, positioning card, front fork assembly, rear frame, V-shaped folding handle, front wheel, rear wheel and driving mechanism, ch...

AI Technical Summary

Problems solved by technology

[0002] The up and down stepping type folding bicycle designed by the designer earlier can be folded, but due to structural and structural reasons, it has not yet achieved the satisfactory effect of being smaller after folding.

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