Portable folding bicycle

Abstract

The invention relates to a portable folding bicycle, which comprises a telescopic rotating handle, a front fork, a front member, a middle beam, a five-way pipe connecting member, a five-way pipe, a shock absorbing type connecting member, a rear fork member, a saddle, a front wheel, a rear wheel and a driving mechanism, wherein the telescopic rotating handle is formed by connecting a left handlebar, a right handlebar, an upper locking member and a lower locking member, the front member is rotationally connected with the lower locking member and the middle beam, the middle portion of the middlebeam is connected with the five-way pipe connecting member, the rear end of the middle beam is connected with the shock absorbing type connecting member, the five-way pipe is embedded into the five-way pipe connecting member, the shock absorbing type connecting member is rotationally connected with the rear fork member, the connecting rod of the saddle is rotationally connected with the seat pipeof the saddle and the front member, the front wheel is installed on the front fork, the rear wheel is installed on two rear fork sheets, and the driving mechanism comprises a middle shaft, two cranks,a tooth disc, two pedals, a front-stage small sprocket, a rear-stage sprocket, a shaft sleeve, a fly wheel, a front-stage chain and a rear-stage chain.

Description

Technical field: [0001] The invention relates to a foldable portable bicycle, in particular to a portable foldable bicycle which can be folded small enough and fast in folding speed. [0002] technical background: [0003] At present, there are many models of folding bicycles on the market, and there are folding bicycles with fast folding speed, but the volume of folding bicycles is still large after folding, and the folding of slightly smaller folding bicycles takes a lot of time. Invention content: [0004] The purpose of the present invention is to provide a portable folding bicycle that can be folded fast and small enough. The purpose of the present invention is achieved in that a portable folding bicycle includes telescopic handlebar, front fork, front piece, center beam, bottom bracket connecting piece, bottom bracket, shock absorber connecting piece, rear fork piece, vehicle seat, The front wheel, the rear wheel and the driving mechanism are characterized by: telesc...

AI Technical Summary

Problems solved by technology

[0005] The beneficial effects of the present invention are: the present invention uses a variety of technological means to make the body without electric welding, which represents a new trend in the manufacturing process of bicycles; the present invention enables the portable folding bicycle to achieve fast folding speed through ingenious design , and the volume is small enough after folding; the present invention adopts the latest form of telescopic handle, which makes the folding of the handlebar both the simplest and the most effective; The left position enables the folded rear wheel to be located on the right side of the front piece, center beam and seat tube, and is positioned by the rear wheel fastener; The seat tube and the front part are folded together with the front fork and front wheel. After folding, the seat folding positioning lock connected to the seat tube is locked with the rearward folding edge of the center beam channel part, which can produce better positioning effect. The seat tube, the front piece, including the front fork and the front wheel are fixed together in the folded state; the present invention adopts the matching mode of the shock-absorbing connecting piece and the shock-absorbing baffle, which not only allows the rear fork and the rear wheel to move toward the The front and bottom are quickly folded, and the rear fork has a shock-absorbing effect after being unfolded; moreover, the spring joint is used to cooperate with the joint bolt and the screw hole steel ball, which solves the problem of the spring joint penetrating into the vertical hole of the polyurethane block. difficult problem

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