Glass fiber and carbon fiber hybrid composite bicycle middle tube and preparation method thereof

Abstract

The invention discloses a bicycle intermediate pipe made of a glass fiber and carbon fiber mixed composite material and a manufacturing method for the bicycle intermediate pipe. The bicycle intermediate pipe comprises a vertical long pipe and a branch pipe located at the middle portion of the vertical long pipe. The branch pipe and the vertical long pipe are of an integrally-formed structure. The composite material comprises high-toughness zero degree glass fibers, high-toughness + / -45 degree glass fibers, zero degree carbon fibers and + / -45 degree carbon fibers. The bicycle intermediate pipe made of the glass fiber and carbon fiber mixed composite material is designed, according to the stress condition of the intermediate pipe, the arrangement structures of the composite material in different portions of the bicycle intermediate pipe are different, and the tensile strength and the stability of different portions of the intermediate pipe are different. The bicycle intermediate pipe has the beneficial effects of being low in mass, high in strength and good in impact absorption performance, and the riding comfort degree of a rider is improved. By the adoption of a disclosed production method for the above bicycle intermediate pipe, the production cost is low, the method is simple, the surface of a product is smooth, the size accuracy is high, and mechanical and automatic production is easy to achieve.

Description

technical field [0001] The invention relates to the field of a bicycle middle tube and a preparation method, in particular to a bicycle made of glass fiber and carbon fiber hybrid composite material and a preparation method thereof. Background technique [0002] The material of bicycle middle tube has evolved from the earliest chrome-molybdenum steel material to aluminum alloy, titanium alloy, magnesium alloy, scandium alloy material, and then the application of composite materials. Chromium-molybdenum steel has the advantages of good processing performance and high strength, but it has its own advantages. Insurmountable disadvantages such as heavy weight and easy to rust. Compared with chromium-molybdenum steel materials, aluminum alloy materials can be used to make lightweight frames, but aluminum alloys are not hard enough and are easily oxidized, while the production and processing costs of titanium alloys, magnesium alloys, and scandium alloys are too high , are not th...

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Problems solved by technology

[0003] The composite material made by mixing carbon fiber and glass fiber has the characteristics of light weight, high strength, and good impact absorption performance, such as the invention patent of CN201310029979.0 "glass fiber and carbon fiber hybrid composite tapered pipe and its preparation method" , the pipe wall of the tapered pipe is a three-layer composite structure, the first layer is glass fiber, the second layer is carbon fiber, and the third layer is glass fiber. This arrangement can enhance the tensile modulus of the tapered pipe as a whole and reduce strain capacity, but due to the different force conditions of different parts of the bicycle tube, this arrangement has little effect

Moreover, the wrapping process of the tapered pipe is a winding molding method, which has the disadvantages of small adaptability and high cost, and cannot obtain better technical and economic benefits.

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