Transmission separable folding portable bicycle and folding method thereof

Abstract

The invention discloses a transmission separable folding portable bicycle and a folding method thereof. The transmission separable folding portable bicycle comprises a bicycle body folding mechanism,a front wheel folding mechanism, a rear wheel folding mechanism, a saddle folding mechanism and a handlebar folding mechanism. The key structural improvement is the rear wheel folding mechanism, and the situations that as for a traditional folding bicycle, a chain cannot be folded, thus the folding position of a large disc wheel is arranged on a bicycle frame at the front end, the horizontal areais considered, and thus the large disc wheel is close to a flywheel in design so that the optimal design of human body mechanics cannot be added are eliminated; and technical improvement is conductedon the transmission position, a transmission device is completely separated thoroughly, position limitation of the center axis is eliminated, through key points of the human body mechanics, the optimal design position of the center axis is found better, the human body state of riding for a long time is guaranteed, and through argumentation for multiple times, the convenient and rapid folding method is proposed.

Description

technical field [0001] The patent of the invention belongs to the field of portable folding bicycles, and specifically relates to a folding portable bicycle with detachable transmission and a folding method. Background technique [0002] Bicycles are a good way of exercising for outdoor sportsmen, and they are also a good means of transportation for those traveling on the last mile between the bus station and the destination or people traveling for short distances. Folding bicycles are more widely used because of their foldability, taking up less space and being easy to carry. At present, the existing collapsible bicycles on the market have met the use requirements such as small size, light weight, portability, and easy operation to a certain extent. However, the foldable bicycles currently on the market have the following technical points for improvement: [0003] 1. The folded car body is not tightly fitted, the horizontal space is relatively large, and the folded shape ...

AI Technical Summary

Problems solved by technology

[0003] 1. The folded car body is not tightly fitted, the horizontal space is relatively large, and the folded shape of each part is not regular enough, which is not convenient for storage and handling;

[0004] 2. Considering the problem that the chain cannot be folded or falls off when folding, the existing technology sets the folding point on the frame at the front end of the large chainring. The technical solution for the distance between the flywheels of the rear wheels is to reduce the horizontal area after folding. However, due to the human body structure when riding, the adjustable range of the distance between the seat and the handlebar is small, resulting in a large gap between the seat and the large teeth. The angle between the connection line of the disc and the vertical line becomes smaller, which is not suitable for long-term riding from the perspective of human mechanics;

[0005] 3. Considering the problem that the chain cannot be folded or fallen off when folding, the existing technology also has a chain tensioning device to ensure that the chain will not loosen when folding, but this solution leads to more complicated structure, manufacturing and maintenance of the whole vehicle The cost increases, and it is more inconvenient when folding;

[0006] Folding method: Existing technology cannot change the separation problem between drive-transmission-driven

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