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Folding bicycle

A technology for folding bicycles and folding mechanisms, which is applied to foldable bicycles, bicycles, motor vehicles, etc., can solve the problems of insufficient rigidity, easy to hang chains, etc., and achieves strong practicability, simple structure, improved rigidity and riding comfort. Effect

Inactive Publication Date: 2014-02-19
刘晔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the lack of rigidity of existing folding bicycles and the problem of easy chain hanging, the invention provides a folding bicycle with the characteristics of good rigidity and not easy to hang chains, which improves riding comfort and practicability, and also has the characteristics of convenient folding

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0051] Please combine figure 1 , figure 2 , image 3 , Figure 4 , The folding bicycle of the present embodiment includes a vehicle frame composed of a front triangle and a rear fork, a transmission system containing a bottom bracket, the transmission system is installed on the rear fork, and the lower end of the middle tube is provided with a folding mechanism for folding the rear fork. The front triangle includes the middle tube, the front triangle is connected with the front fork, and the front fork is fixedly installed with the front wheel. The front triangle also includes the head pipe clamp for installing the plug pipe. Bundle. A rear wheel is mounted on the rear fork.

[0052] The folding mechanism of this embodiment includes a shaft sleeve installed at the lower end of the middle tube and a rotating shaft matched with the shaft sleeve. The transmission system is the transmission system of the existing speed-changing bicycle, not only including the bottom bracket,...

Embodiment 2

[0056] The folding bicycle of this embodiment, please combine figure 1 , figure 2 , image 3 , Figure 4 , The folding bicycle of the present embodiment includes a vehicle frame composed of a front triangle and a rear fork, a transmission system containing a bottom bracket, the transmission system is installed on the rear fork, and the lower end of the middle tube is provided with a folding mechanism for folding the rear fork. The front triangle includes the middle tube, the front triangle is connected with the front fork, and the front fork is fixedly installed with the front wheel. The front triangle also includes the head pipe clamp for installing the plug pipe. Bundle. A rear wheel is mounted on the rear fork.

[0057] The folding mechanism in this embodiment is a beam structure. The transmission system is the transmission system of the existing speed-changing bicycle, not only including the bottom bracket, the front sprocket, the rear sprocket and the chain connecti...

Embodiment 3

[0061] The foldable bicycle of this embodiment comprises a vehicle frame made up of a front triangle and a rear fork, a transmission system containing a bottom bracket, the transmission system is installed on the vehicle frame, and the front triangle comprises a middle tube; the transmission system is installed on the rear fork, and the middle tube The lower end of the fork is provided with a folding mechanism for folding the rear fork. The folding mechanism of this embodiment is a beam structure, which is a prior art, and will not be repeated here. The beam structure is connected with a bottom bracket. When the bicycle is unfolded, the bottom bracket is located directly below the middle tube, and the bottom bracket is welded to the bottom bracket. The rear fork is connected as one. The transmission system of the foldable bicycle in this embodiment is the transmission system of an ordinary bicycle, that is, it does not have a speed change function.

[0062] In the folding bic...

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PUM

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Abstract

The invention discloses a folding bicycle which is use for solving the problems that an existing folding bicycle is poor in bicycle rigidity and a chain is prone to sliding down. The folding bicycle comprises a frame and a transmission system, wherein the frame is composed of a front triangular structure and a rear fork, and transmission system is provided with a bottom bracket. The transmission system is installed on the frame, front triangular structure comprises a middle pipe, the transmission system is installed on the rear fork, and the lower end of the middle pipe is provided with a folding mechanism used for folding the rear fork. The folding bicycle has the advantages that the structure is simple, a chain is not prone to sliding down after the folding bicycle is folded, and the riding comfort is good.

Description

technical field [0001] The invention relates to bicycles, in particular to a folding bicycle. Background technique [0002] Bicycles are green, environmentally friendly, and can also keep fit. They are an important means of transportation in life. Therefore, the national government supports the use of bicycles by citizens. At present, there are many types of bicycles on the market, mainly divided into ordinary bicycles with better rigidity and folding bicycles that are easy to carry. [0003] For example, the Chinese invention patent with the application number 95233769.X discloses a mountain bike, which consists of a vehicle frame, a front fork installed on the head tube of the vehicle frame, a handlebar installed on the top of the front fork, and a handlebar installed at the lower end of the front fork. Front axle parts, front wheels installed on the front axle parts, saddles installed on the risers of the frame, rear axle parts installed on the lower end of the fork of ...

Claims

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Application Information

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IPC IPC(8): B62K15/00
Inventor 刘晔
Owner 刘晔
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