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Method for reinforcing spoke structural strength of bicycle and motor vehicle

A technology for structural strength and bicycles, applied in bicycle accessories, transportation and packaging, etc., can solve the problems of inability to balance, limited lightweight achievements, and high processing costs.

Inactive Publication Date: 2008-06-18
协达车料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is feasible to directly increase the wire diameter, it is too wasteful of materials and violates the trend of lightweight bicycles, so that there are not many adopters
As for the ones that use partial wire diameter enlargement (such as D.B. two-stage type, SWAGE diameter reduction type), they also use larger wire diameters, and then reduce part of the wire diameters by grinding or forging. The processing cost is high, and the lightweight effect is limited. Only A small number of high unit price models are selected
In other words, low cost, light weight and high strength seem to be impossible to balance

Method used

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  • Method for reinforcing spoke structural strength of bicycle and motor vehicle
  • Method for reinforcing spoke structural strength of bicycle and motor vehicle
  • Method for reinforcing spoke structural strength of bicycle and motor vehicle

Examples

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Embodiment Construction

[0020] The present invention provides a method for strengthening the structural strength of the spokes of bicycles and motorcycles. The method adopts mechanical processing to improve the structural strength of the neck 3 and the bending part 2 of the spoke 1 body; The spokes after the inventive method processing are compared and explained:

[0021] Taking the spoke body 1 made of stainless steel SS 304 by conventional technology as an example, the shear stress is about 60kgf / mm 2 , pulling force about 110kgf / mm 2 , therefore, if the wire diameter of the spoke is 2.0mm, then:

[0022] 1. The maximum tensile force that the spokes can withstand is

[0023] 110kgf / mm 2 ·[(2.0 / 2) 2 ·π]mm 2 =345kgf

[0024] 2. The maximum shear force that the spokes can withstand is (the actual spokes are not cut vertically, the section is approximately equal to 4.5~5.0)

[0025] 60kgf / mm 2 ·[4.5~5.0]mm 2 =270~300kgf

[0026] From the above calculation results, it can be seen that although...

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Abstract

The invention provides a method for strengthening the spoke intensity of bicycle and car. It mainly use mechanical process method to upgrade the structure intensity of the spoke on the bent part, especially uses the theory using metal process and rigidification, with several times of punching and forming, makes the metal intensity at the bent position of the spoke being upgraded, at the same time, the wire radius is increased because of the squeezing effect; the shear load= shear strength X shear area, after the process, in actual test, the conclusion can be acquired that the pulling force intensity reaches to the metal material pulling force intensity.

Description

technical field [0001] The invention relates to a technique for strengthening the structural strength of spokes. In particular, it relates to a processing method capable of strengthening the overall structural strength of the spoke, which mainly improves the shear strength and cross-sectional area of ​​the spoke neck and the bending part, thereby overcoming the insufficient shear load of the spoke at this position. Background technique [0002] So far, those skilled in the art have provided quite a few types and types for the design of the combined structure of the wheel hub and spokes of bicycle or locomotive wheels, such as China Taiwan Patent Announcement No. 261953, No. 317821, and No. 385284 No., No. 398423, No. 4485851, No. 516517, No. 511588, etc. Although the above-mentioned patents can provide more convenient use benefits for the spokes in assembly or disassembly, they have not considered that the spokes may be due to insufficient structural strength. resulting in ...

Claims

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Application Information

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IPC IPC(8): B21D53/86
Inventor 陈文瑄
Owner 协达车料股份有限公司
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