Bicycle frame

A bicycle and frame technology, which is applied in the field of bicycle parts, can solve the problems of increasing bicycle weight, effort, and complicated stress on pipe fittings, etc., and achieve the effect of improving strength

Inactive Publication Date: 2013-02-13
张林坤
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] From the analysis of the force situation of the connection structure of the bicycle frame, the middle tube mainly bears the weight of the rider, and the upper fork mainly bears the reaction force from the ground to the bicycle; The pipes and other pipes are tightly welded, so the force of each pipe is complicated; for example, the middle pipe not only bears the main weight of the rider, but also bears the reaction force from the ground, but the angle formed by the directions of the two forces Large, so the degree of interaction is relatively large, which requires the bicycle frame to have higher strength. At present, in order to improve the strength of the bicycle frame, the wall thickness of the pipe fittings will be increased, but this will increase the weight of the bicycle and make riding easier. strenuous

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bicycle frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Below in conjunction with accompanying drawing, the present invention will be further described:

[0008] A bicycle frame, comprising a head tube 1, an upper tube 2, a middle tube 3, a lower tube 4, an upper fork 5, a lower fork 6 and a bottom bracket 7, one end of the upper fork 5 is hinged and fixed to the end of the upper tube 2 , the lower fork 6 and the upper tube 2 are arranged on the same straight line, the lower fork 6 is fixed around the middle tube 3 and one end of the upper tube 2, and the angle formed between the middle tube 3 and the lower fork 6 is 65°. The end of the upper fork 5 is fixed on the upper tube 2, and the reaction force generated by the ground against the bicycle during riding of the bicycle is transmitted to the upper tube 2, and then the force is distributed to the entire vehicle frame through the upper tube 2. Under the condition of excluding material factors, this frame structure increases the strength a lot.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a bicycle frame which comprises a head tube, an upper tube, a middle tube, a lower tube, an upper fork, a lower fork and a bottom bracket, wherein one end of the upper fork and an end part of the upper tube are hinged and fixed; the lower fork and the upper tube are arranged on the same straight line; the lower fork and one end of the upper tube are fixed after bypassing the middle tube; and an angle formed between the middle tube and the lower fork is 65 degrees. Through the optimal design of the bicycle frame disclosed by the invention, the strength of the bicycle frame is effectively enhanced without changing the wall thickness of the tubes of the bicycle frame.

Description

technical field [0001] The invention relates to a bicycle component, in particular to a bicycle frame. Background technique [0002] From the analysis of the force situation of the connection structure of the bicycle frame, the middle tube mainly bears the weight of the rider, and the upper fork mainly bears the reaction force from the ground to the bicycle; The pipes and other pipes are tightly welded, so the force of each pipe is complicated; for example, the middle pipe not only bears the main weight of the rider, but also bears the reaction force from the ground, but the angle formed by the directions of the two forces Large, so the degree of interaction is relatively large, which requires the bicycle frame to have higher strength. At present, in order to improve the strength of the bicycle frame, the wall thickness of the pipe fittings will be increased, but this will increase the weight of the bicycle and make riding easier. The frame is laborious. Contents of the i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B62K19/06
Inventor 张林坤
Owner 张林坤
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap