TWI608929B - Method for forming hole of bicycle composite frame or fitting and its finished product - Google Patents

Description

Forming method of the hole of bicycle composite frame or accessory and finished product thereof

The invention relates to a method for forming a hole of a bicycle composite material frame or a fitting and a finished product thereof, in particular, the hole can be formed with the bicycle composite material frame or the accessory, and is integrally formed at the same time, and the conventional hole is improved. The mold can be formed by drilling and milling, which saves processing time and saves cost.

According to the recent production value of bicycles, the production of bicycle frames or accessories in a short period of time has always been one of the goals pursued by the bicycle industry. At present, bicycle frames or accessories are generally made of carbon fiber or metal (such as Made of aluminum alloy, titanium alloy and magnesium alloy; especially the frame or accessory of carbon fiber has the advantages of light weight, good impact absorption and various shapes. However, the carbon fiber frame or the fitting needs to be provided with holes, such as wire holes or screw holes. The arrangement of the holes is conventionally manufactured. After the carbon fiber frame or the fitting is formed, another clamping die is formed to clamp the carbon fiber frame. Or accessories, drill holes in the milling machine, if it is a screw hole and then tapping. The conventional method of manufacturing carbon fiber frames or fittings for holes is not only labor-intensive, but also costly and needs to be improved.

In view of the above shortcomings, the inventors have intensively conceived the research and development creation, and after a long period of effort, the present invention has been produced.

Therefore, the object of the present invention is to provide a method for forming a hole of a bicycle composite material frame or accessory that can be formed by a bicycle composite material frame or accessory while being integrally formed to save processing time and cost. And its finished products.

In order to achieve the above object, the method for forming the hole of the bicycle frame or the fitting of the present invention comprises: Step 1. Manufacturing a basic modeling body having a hole arrangement corresponding to the frame or the fitting and having the hole diameter of the hole and a protruding protrusion; step 2. coating the surface of the basic molding body with a carbon fiber cloth having a notch at the corresponding base of the basic molding body on the outer side of the basic molding body; Step 3. stacking the carbon fiber cloth After the layer reaches a predetermined thickness, the basic shape body covered by the carbon fiber cloth is placed in a frame or a fitting mold, and after being blown and heat-cured and shaped, the basic shape body is extracted, that is, the composite material having the hole is completed. Frame or accessories.

In order to achieve the above object, the technical means and the achievable effects of the present invention, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Please refer to the first to third figures, the hole 10 of the bicycle frame 1 of the embodiment of the present invention is a line hole, wherein the method for forming the hole 10 of the frame 1 comprises the following steps: Step 1. Create a The base molding body 11 (the head tube portion is as shown in the third figure), the base molding body 11 is provided with a boss 12 corresponding to the hole 10 of the hole of the bicycle frame 1 and protruding outward (such as 2)); the surface of the base molding body 11 is coated with a carbon fiber cloth 13 having a notch 14 at a boss 12 of the base molding body 11 (as shown in the fourth figure); and step 3 The carbon fiber cloth 13 is laminated to a predetermined thickness, and the base molding body 11 covered with the carbon fiber cloth 13 is placed in a frame mold, and the base molding body 11 is taken out by blowing and hot-press curing. As shown in the fourth figure, the bicycle frame 1 having the holes 10 is completed.

Referring to the first and fifth figures, an embodiment of the present invention is a bicycle accessory. The bicycle accessory is a tube 2, wherein the hole 20 of the seat tube 2 is a line hole, and the hole is formed as shown in the first figure. As shown in the molding step, the surface of the base molding body 11 of the seat tube 2 protrudes from the surface of the hole 20 with a boss 12 (as shown in FIG. 5A), and then the bread of the base molding body 11 A carbon fiber cloth 13 having a notch 14 at a position corresponding to the boss 12 is laminated to a predetermined thickness (as shown in FIG. 5b), and the base molding body 11 covered with the carbon fiber cloth 13 is placed in a tube. After the mold is blown and hot-pressed and fixed, the base molding body 11 is withdrawn, that is, the bicycle seat tube 2 having the hole 20 is completed (as shown in the fifth figure c).

Please refer to the first and sixth figures for the molding method of the faucet tube of the molded bicycle accessory of the present invention. The faucet tube 3 is provided with a plurality of holes 30, which are screw holes (as shown in the sixth figure c). The molding method is attached to the surface of the base molding body 11 of the faucet tube 3 and protrudes from the position of the hole 30 with a boss 12 (as shown in the sixth drawing a1, a2, wherein the a1 is the basic shape of the faucet tube 3) A perspective view of the body 11, a2 is another perspective view of the base molding body 11 of the faucet tube 3, and then the carbon fiber cloth 13 having the notch 14 at the position of the boss 12 is covered on the circumferential surface of the base molding body 11. After the carbon fiber cloth 13 is layered to a predetermined thickness (as shown in the sixth figures b1 and b2, wherein FIG. b1 is a perspective view of the carbon fiber cloth 13 laminated on the circumferential surface of the base molding body 11 of the faucet tube 3, and b2 is the faucet tube 3 The base molding body 11 is laminated with a carbon fiber cloth 13 at another angle, and the base molding body 11 covered with the carbon fiber cloth 13 is placed in a faucet tube mold, and is shaped by blowing and hot pressing. , the basic modeling body 11 is extracted, that is, the bicycle faucet tube 3 having the hole 30 is completed (as shown in the sixth figure c) ). The hole 30 is then tapped, and the hole 30 is a screw hole.

Therefore, in the present invention, when the surface of the base molding body is provided with a boss at the hole corresponding to the frame or the fitting, and the surface of the base molding body is laminated with the carbon fiber cloth, the carbon fiber cloth corresponds to the boss of the basic molding body. There is a gap at the place, and the carbon fiber cloth is laminated to a predetermined thickness outside the basic shape, and then the basic shape body is placed in the mold, and after being blown and heat-cured and shaped, the basic shape body is extracted, that is, the bicycle composite material vehicle is completed. The hole of the frame or the fitting eliminates the need for the drilling to position the frame or the fitting with the clamping die, and the labor of milling the hole by the milling machine is lacking.

In conclusion, the present invention can achieve the intended function and purpose, and the detailed description can be implemented by those skilled in the art, and the above embodiments are only used to illustrate the present invention, and all equivalent structures. Changes may still be made without departing from the scope of the invention.

1‧‧‧Bicycle frame
10‧‧‧ hole
11‧‧‧Basic modeling body
12‧‧‧Boss
13‧‧‧Carbon cloth
14‧‧‧ gap
2‧‧‧ seat tube
20‧‧‧ hole
3‧‧‧ faucet tube
30‧‧‧ hole

The first figure shows a manufacturing flow chart of an embodiment of the present invention. The second figure shows a perspective view of a frame containing a basic modeling body according to an embodiment of the present invention. The third figure shows a perspective view of a basic shape body of a head pipe portion of an embodiment of the present invention. The fourth figure shows a schematic view of the hole forming of the frame of the embodiment of the present invention. The fifth figure shows a schematic view of the hole forming of the seat tube of the embodiment of the present invention. The sixth figure shows a schematic view of the hole forming of the faucet tube of the embodiment of the present invention.

Claims (2)

A method for forming a hole of a bicycle composite material frame or accessory, the steps of which comprise: step 1. manufacturing a basic modeling body, the surface of the basic modeling body corresponding to the hole of the frame or the fitting has a hole diameter matching the hole An externally protruding boss; step 2. coating the base fiber with a carbon fiber cloth having a notch at a position of the boss; and step 3. laminating the carbon fiber cloth to a predetermined thickness outside the base body to complete the carbon fiber The basic molded body covered by the cloth is placed in a frame or a fitting mold, and after being blown and heat-cured and shaped, the basic shaped body is extracted, that is, the composite material frame or fitting having the hole is completed. The method for molding the hole of the bicycle composite material frame or the accessory according to the first aspect of the invention, wherein the hole is a screw hole and is subjected to a tapping process.