A bicycle frame and a production method thereof

Abstract

The invention discloses a bicycle frame and a production method thereof. The bicycle frame is composed of two symmetrical accessories, including a left accessory and a right accessory, and the left accessory and the right accessory are mirror symmetrical. The fitting is formed by splicing a plurality of half pipes, wherein the half pipes comprise a front fork half pipe, an upper half pipe, a lowerhalf pipe, a seat half pipe and a left rear flat fork pipe; The two ends of the upper half pipe are respectively connected with the front fork half pipe and the seat half pipe; The two ends of the lower half pipe are respectively connected with the front fork half pipe and the seat half pipe through the five-way half pipe; The left rear flat fork tube is connected to the seat half tube through afive-way half tube. The method comprises the following steps of: molding a left fitting and a right fitting by molding; Stick the left and right parts together to form a complete frame. The inventionhas the advantages of simple structure, moldable accessories, easy production, avoidance of internal creases generated by the existing air pressure process, stable quality and high strength of the accessories. The production method is low in difficulty and low in operation requirement, can improve the production efficiency, and is suitable for batch production.

Description

technical field [0001] The invention relates to the field of bicycles, in particular to a bicycle frame and a production method thereof. Background technique [0002] Bicycle is a common means of transportation in daily life. It can be used for travel instead of transportation, and it is green and environmentally friendly. Bicycles can also be used as a tool for exercise and competition, and bicycle racing has become a popular sport for competitive sports. In sports competition, high requirements are placed on the overall structure of the bicycle. In order to pursue a lighter bicycle body, the existing bicycle frame is generally made of composite materials, which has the characteristics of high strength and low weight. The frame is formed integrally or spliced ​​by pipe fittings. [0003] Therefore, when producing the above-mentioned composite bicycle frame on the market, there are two production methods: one is to adopt integral molding to directly produce the entire vehi...

AI Technical Summary

Problems solved by technology

These two methods require pre-piercing air ducts and forming them by means of wind pressure, resulting in many defects: the operator's level of operation is required to be high, and the product quality depends largely on the operator's experience and operating methods. Improper operation will lead to creases when the wind pressure is generated inside, which will affect the strength of the product, and the defect rate is high; the requirements for the pressure of the wind pressure and air blowing are strict, and the production hours are long, which is difficult to meet the requirements of mass production

Therefore, it is difficult to form the composite bicycle frame of the existing structure, and it is difficult to meet the requirements of mass production in the market

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