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Sandwich type bicycle rim and manufacturing method thereof

A bicycle, sandwich-type technology, applied to rims, vehicle parts, transportation and packaging, etc., can solve problems such as insufficient bonding force and different thermal expansion coefficients, and achieve the effects of increasing weight, improving safety, and improving brake heat dissipation

Inactive Publication Date: 2014-04-09
XIAMEN CARBONKING COMPOSITES TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different thermal expansion coefficients of carbon fiber and metal alloy, long-term use will cause delamination due to insufficient bonding force between the two.

Method used

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  • Sandwich type bicycle rim and manufacturing method thereof
  • Sandwich type bicycle rim and manufacturing method thereof
  • Sandwich type bicycle rim and manufacturing method thereof

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Effect test

Embodiment Construction

[0032] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] Such as figure 1 As shown, a sandwich type bicycle rim provided by the present invention includes a tire position hole 1 and a closed chamber 2, which are arranged up and down. 12. The fetal position hole 1 contains at least one metal alloy layer 4, the outer surface 11 of the fetal position hole 1 and the braking surface 12 each have a layer of carbon fiber layer 3, and the metal alloy layer 4 is wrapped in it to form a sandwich body; the fetal position hole The outer surface 11 of 1 and the carbon fiber layer 3 of the braking surface 12 are integrally formed with the wall body 21 of the chamber 2 with carbon fiber material. The upper part in the tire position hole groove 1 is provided with a hook 13 for blocking the inner tube. The alloy density of the metal alloy layer 4 is lower than 2.8 g / cm 3 , the metal...

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Abstract

The invention discloses a sandwich type bicycle rim and a manufacturing method of the sandwich type bicycle rim. The sandwich type bicycle rim comprises a tire position hole groove and a closed cavity, the tire position hole groove and the closed cavity are vertically ranked, an tire tube is accommodated in the tire position hole groove, and a brake surface is formed outside the side face of the tire position hole groove. The sandwich type bicycle rim is characterized in that the tire position hole groove at least comprises a metal alloy layer, the outer surface and the brake surface of the tire position hole groove are respectively provided with a carbon fiber layer, the metal alloy layers are wrapped between the carbon fiber layers, and then a sandwich body is formed. A CFRP-alloy material-CFRP sandwich structure is formed on a brake side, the good brake heat dissipation and stable supporting effects are possessed; by the utilization of the high-temperature resistance characteristic of metal materials, frame burning risks of the rim are effectively reduced, safety of the rim is improved, the weight of the carbon fiber rim is not increased, and the requirements for light weight and safety of products are met. The metal alloy layer is totally wrapped between the carbon fiber layers, and therefore the layered phenomenon caused by the difference of thermal expansion coefficients of carbon fiber materials and the metal alloy layer can be avoided.

Description

technical field [0001] The invention relates to the application field of bicycle accessories, in particular to a sandwich type bicycle rim and a preparation method thereof. Background technique [0002] Cycling is an aerobic outdoor exercise that is very beneficial to the human body, and it has been widely carried out in developed countries such as Europe and the United States. According to statistics, in the United States, about one-third of outdoor sports are cycling. This shows the universality of this movement. Bicycles have also changed from traditional means of transportation in our impression to fitness equipment. Various manufacturers are all striving to improve product design, manufacturing process, and use better materials in order to obtain better bicycles. [0003] The material used to make bicycles has gradually changed from steel to aluminum alloy in order to pursue light weight. In recent years, expensive carbon fiber materials have been used on a large s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60B21/02B29C70/44
Inventor 刘五瑞蔡圣堂
Owner XIAMEN CARBONKING COMPOSITES TECH
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