Folding bicycle

Abstract

The invention discloses a folding bicycle. Two folding mechanisms convenient for folding a front wheel and a rear wheel are respectively arranged on an upper tube and a lower tube of the folding bicycle; one folding mechanism is a hinge folding mechanism and the other folding mechanism is in a bundle structure; the bundle structure comprises a bundle tube, a fixed folding tube and a movable folding tube, wherein the bundle tube is provided with an opening slot; the fixed folding tube and the movable folding tube can respectively extend into the two ends of the bundle tube; a clamping mechanism which is convenient for clamping and fixing the fixed folding tube and the movable folding tube is arranged on the opening slot; the fixed folding tube is provided with a positioning slot hole alongthe axial direction; the bundle tube is limited in the positioning slot hole in the fixed folding tube to slide by using a rotationally-fixed positioning screw; the fixed folding tube and the movablefolding tube are respectively two abutted and folded tube fittings for forming the upper tube or the lower tube; a hinge folding assembly comprises a left folding seat and a right folding seat, wherein one side of the left folding seat is connected with one side of the right folding seat by using hinges; the left folding seat and the right folding seat are respectively welded and fixed on the twoabutted and folded tube fittings s for forming the upper tube or the lower tube; and the two abutted and folded tube fittings for forming the upper tube or the lower tube are fastened on and connected to the other sides of the left folding seat and the right folding seat by using a fastening mechanism.

Description

technical field [0001] The invention relates to a folding bicycle, in particular to a folding bicycle with an upper tube and a lower tube structure, which realizes folding of the front and rear wheels. Background technique [0002] In the prior art, the folding bicycle adopts two ways of shrinking and folding of pipe parts and collapsing and folding of pipe parts to realize the overall shrinking and folding effect of the bicycle. The folding of the pipe fittings is achieved by installing a hinge folding mechanism on the pipe fittings. Usually, the folding mechanism is composed of a left folding seat and a right folding seat connected by a hinge on one side. The left folding seat and the right folding seat are respectively welded to the two folding pipes. And the other side of the left folding seat and the right folding seat are fastened by a fastening mechanism to realize the fastening of the two folded pipes, such as the patent previously applied by the applicant - improved...

AI Technical Summary

Problems solved by technology

In this way, two folding mechanisms must be installed on the lower tube and the upper tube in the same folding direction (the front and rear wheels are aligned and folded). Due to the dynamic and static errors caused by design, manufacture and operation, if the upper tube and the lower tube adopt two folding mechanisms at the same time Hinge folding mechanism, it is difficult to achieve easy and free folding effect

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