WO2012037748A1

WO2012037748A1 - Manufacture method of bicycle pipe frame components made of bamboo

Info

Publication number: WO2012037748A1
Application number: PCT/CN2010/079075
Authority: WO
Inventors: 胡军
Original assignee: Hu Jun
Priority date: 2010-09-21
Filing date: 2010-11-24
Publication date: 2012-03-29
Also published as: CN101973352A

Abstract

A Manufacture method of bicycle pipe frame components made of bamboo. Truncate the bamboo pipe to obtain the same length and caliber with the bicycle pipe component's. Each bamboo pipe has at most one bamboo joint. Inject from one end of the bamboo pipe and turn the bamboo pipe to be solid. Connect and fix the ends of bamboo pipes according to the structure of components, and then achieve the components which are needed. Using bamboo instead of metal material in this invention not only benefits environmental protection but also improves the bamboo pipe's intensity and performance effectively. The method of this invention increases the integration and fastness of the bicycle significantly and then provides the guarantee for safely using.

Description

Bamboo bicycle pipe frame parts manufacturing method

Technical field

The invention relates to the technical field of bicycle production, and in particular to a method for manufacturing a bicycle pipe frame component from bamboo.

Background technique

Bicycles have long been widely used as a traditional means of transportation, and their structure is simple and mature. At present, the research on bicycles mainly focuses on the selection of materials and supporting production methods for key components such as frame, handlebars, seat rods, etc., to meet the requirements of firmness, light weight, economy and environmental protection. Conventional bicycle support operating parts are mostly made of metal, which has high production cost, complicated processing process and environmental pollution. As a natural material, bamboo itself has the characteristics of hardness, pressure resistance, tensile strength and light weight. The material is easy to obtain, easy to process and environmentally friendly. Therefore, the production of bicycle has good economic and social benefits. At present, the prior art uses bamboo as a material to produce bicycle parts. Usually, after the bamboo is cut to the required specifications, the joint is directly fixed and then installed. However, since the interior of the bamboo is hollow, and as a natural plant, there are problems such as being susceptible to insects and dry cracks, so the material is easily changed to reduce the strength and firmness, thereby affecting the integrity and firmness of the whole vehicle. Sex and durability pose a great safety hazard to users.

Summary of the invention

The present invention provides a method for manufacturing a bamboo bicycle pipe frame component according to the deficiencies of the prior art, comprising: a) cutting a bamboo pipe having a length and a diameter equivalent to a bicycle pipe fitting as needed, and each bamboo pipe has at most one bamboo joint ;

b) performing injection molding treatment from the end of the bamboo tube into the bamboo tube to solidify the bamboo tube;

c) Fix the ends of the bamboo tubes together according to the structure of the parts.

Although the bamboo itself is hard, its hollow structure makes its strength limited and difficult to use for a long time. Therefore, the present invention adopts a method of injecting into a bamboo tube to make it practical, so as to greatly improve the strength of the bamboo tube and provide a guarantee for safe use. To achieve this, there is no or only one bamboo joint in the middle of each bamboo tube to allow the entire bamboo tube to be solidified by injection molding from the end of the bamboo tube. Preferably, a bamboo tube with a bamboo joint is used to enhance the stress. In terms of injection molding, the bamboo tube is preferably filled with a polyurethane foam, and the bamboo tube is solidified with a lightweight material to increase the strength while avoiding an increase in weight. In one embodiment, after the bamboo tube is intercepted by the present invention, the bamboo tube is subjected to sterilization treatment, preferably by fumigation, to avoid being infected, and to improve the durability of the bamboo tube.

In another embodiment, after the bamboo tube is intercepted by the present invention, the bamboo tube is dried, preferably by heating, to prevent dry cracking during use, and the bamboo tube is more durable.

In the present invention, after cutting the end of the bamboo tube to the required geometric angle and curvature, it is inserted into the connecting member and fixed by adhesive bonding, rivet; or docked to the connecting member, and By adhesive bonding and fixing, the connection between the bamboo pipes is firm and the stability of the whole vehicle is greatly improved, and the use of the vehicle is safe and reliable. The connecting member may be made of a metal material or a carbon fiber material.

Further, the joint portion of the bamboo tube end and the connecting member of the present invention may also be wrapped with one or more layers of the carbon fiber cloth by adhesive bonding, and then heated to shape the carbon fiber cloth, thereby further stabilizing the connection of the bamboo tube.

The invention can be used to manufacture upper, lower, riser, rear and rear fork tubes of bicycle frames, as well as handlebars, seatbars, shelves, and baskets.

The invention will be further described in detail below with reference to the embodiments.

detailed description

In this embodiment, a method for manufacturing a bicycle bicycle frame component is as follows. The bicycle frame is taken as an example, and the steps are as follows:

1. Select thick-walled bamboo grown in China or Malaysia, and cut the bamboo tube with the length and caliber equivalent to the upper, lower, riser, rear fork and rear fork of the frame, and ensure each bamboo There is only one bamboo in the middle of the tube;

2. Fumigation of the bamboo tube to remove bacteria that are parasitic in the bamboo to prevent the occurrence of insects;

3. Heat and dry the bamboo tube to prevent dry cracking;

4. Cut the end of the bamboo tube to the required geometric angle and curvature to match the shape of the metal connector;

5. Injecting polyurethane foam into the bamboo tube from the end of the bamboo tube, thereby realizing the solidification of the bamboo tube with light materials and improving the strength of the bamboo tube;

6. Insert the bamboo tubes of the upper tube, the lower tube, the vertical tube, the rear upper tube and the lower fork tube into the head tube (three-way piece) and the rear lower tube (five-way piece) of the hard aluminum alloy material and Rear fork claws, bonded with epoxy adhesive, and rivets are locked at each joint;

7. Apply epoxy resin adhesive to the joint of the hard aluminum alloy pipe and the bamboo pipe, and then wrap the carbon fiber. Cloth, repeating two to three layers in this way, and finally heating the part to shape the carbon fiber cloth, or replacing the hard aluminum alloy pipe piece with a pipe member made of carbon fiber material in the same manner;

8. Set a mark on the upper part of the riser;

9. Paint the exterior of the entire frame.

In the present embodiment, the intercepted bamboo tube may be subjected to fumigation treatment or heat drying treatment, and the two have no influence on the order. In addition, the present invention is also applicable to the manufacture of handlebars, seat bars, shelves and baskets from bamboo. The above embodiments and their description are to be construed as illustrative only and not limiting of the invention. Equivalent transformations made by those skilled in the art to which the technical features of the present invention are made are within the scope of the appended claims.

Claims

Claim

1. A method of manufacturing a bamboo bicycle pipe frame component, comprising:

a) Cut bamboo tubes of the same length and diameter as bicycle fittings, and each bamboo tube has at most one bamboo joint;

2. The manufacturing method according to claim 1, wherein: the bamboo tube is filled with a polyurethane foam.

3. The manufacturing method according to claim 1, wherein: each of the bamboo tubes has only one bamboo joint.

The manufacturing method according to claim 1, wherein: after the bamboo tube is cut, the bamboo tube is subjected to sterilization treatment.

The method according to claim 4, wherein: the bamboo tube is subjected to a sterilizing treatment by fumigation.

The manufacturing method according to claim 1, wherein: after the bamboo tube is cut, the bamboo tube is dried.

The manufacturing method according to claim 6, wherein: the bamboo tube is subjected to a drying treatment by heating.

8. The manufacturing method according to claim 1, wherein: the end of the bamboo tube is cut to a desired geometric angle and curvature, and then inserted into the connecting member and fixed by adhesive bonding and rivet fixing. Or docked to the connector and bonded by adhesive bonding.

The manufacturing method according to claim 8, wherein: the connecting member is made of a metal material or a carbon fiber material.

10. The manufacturing method according to claim 8 or 9, wherein: the carbon fiber cloth is bonded and wound by one or more layers of carbon fiber cloth at a joint portion of the end of the bamboo tube and the connecting member, and then heated to make carbon fiber. Closing type.

The manufacturing method according to any one of claims 1 to 10, wherein said method is for manufacturing an upper tube, a lower tube, a riser, a rear upper fork tube and a rear lower fork tube of a bicycle frame, and a handlebar, Sitting poles, shelves, baskets.