Folding bicycle, and folding mechanism and double-arm crank used for folding bicycle

Abstract

The invention relates to a folding bicycle, and a folding mechanism and double-arm crank used for the folding bicycle. Although a currently-known folding bicycle can be folded, the bicycle cannot be carried conveniently due to the size of the bicycle. The currently-known folding bicycle has problems that parts of pedals, handlebars, vehicle wheels or a chain are exposed and can pollute or scratch surrounding objects. The folding bicycle includes front and rear wheel folding mechanisms and a double-arm crank. A four-bar linkage arranged on a front frame and a folding mechanism arranged on a rear frame respectively fold the accommodating space between the front wheel and the corresponding frame and the accommodating space between the rear wheel and the corresponding frame longitudinally, the front and rear frames are folded transversely by taking a hinge joint as a pivot, by means of the folding of the above mechanisms, the folding bicycle forms an approximately-rectangular luggage, parts which can be exposed before are all hidden in the luggage in order to reduce the size of the folding bicycle, finally supplemented by handlebars of the folding bicycle and an auxiliary wheel used for dragging, the folding bicycle can be carried out conveniently.

Description

technical field [0001] The invention relates to a folding bicycle, a folding mechanism and a crank used for the folding bicycle, in particular to a folding bicycle which is folded to form a suitcase-like box with the outer frame of the vehicle frame. Background technique [0002] Small-diameter folding bicycles (referred to as small folding bicycles) can be folded to reduce the size of the body when not being ridden, so that users can carry or store them easily. The problem of exposed parts such as chains may stain or scratch other nearby objects, which is not ideal. In addition, in order to further reduce the volume of the folded car body, some models sacrificed the riding performance when the small fold is unfolded. However, it is too large, which takes up storage space and is not conducive to carrying it out. Contents of the invention [0003] In order to solve the above problems, the present invention provides a "folding bike" and a "folding mechanism" and "double-ar...

AI Technical Summary

Problems solved by technology

[0002] Small-diameter folding bicycles (referred to as small folding bicycles) can be folded to reduce the size of the body when not being ridden, so that users can carry or store them easily. The problem of exposed parts such as chains may stain or scratch other objects nearby, which is not ideal

In addition, in order to further reduce the volume of the folded car body, some models sacrificed the riding performance when the small fold is unfolded. But it is too big, it takes up storage space and is not conducive to carrying it out

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