Metal hybrid carbon fiber arrow shaft

Abstract

The present application relates to the technical field of archery equipment, and particularly relates to a metal mixed carbon fiber arrow shaft, which comprises a middle carbon fiber pipe, a head stainless steel pipe, a tail metal pipe and a solid connecting piece, the head stainless steel pipe is arranged at the front end of the middle carbon fiber pipe, the tail metal pipe is arranged at the rear end of the middle carbon fiber pipe, and the two are connected and fixed through the solid connecting piece arranged in the middle carbon fiber pipe, and the outside is wrapped with carbon cloth and is formed through high-temperature curing. The present application adopts a segmented metal mixed structure, replaces a long-size metal inner core with a short metal accessory matched with a carbon fiber main pipe, and greatly reduces the difficulty of straightness control. The thickened head stainless steel pipe effectively bears the impact force, the solid connecting piece is in surface contact with the inner wall of the carbon pipe to disperse the stress, and the service life of the arrow shaft is significantly prolonged. The present application has reasonable structure, low cost and high efficiency, and is suitable for manufacturing various archery equipment.

Description

Technical Field

[0001] This invention relates to the field of archery equipment technology, and in particular to a metal-coated carbon fiber arrow shaft. Background Technology

[0002] With the development of competitive sports and outdoor activities, carbon fiber materials, due to their excellent lightweight and high strength properties, have been widely used in arrow shaft manufacturing, greatly improving the flight stability of arrows and effectively enhancing archery competition results.

[0003] Traditional high-performance arrow shafts are typically made entirely of carbon fiber. While they offer excellent performance, they are prone to fatigue damage and have a limited lifespan after prolonged use. To extend the lifespan of arrow shafts, existing technologies have developed arrow shafts made of polymer composite materials, with a single metal tube as the inner core and an outer layer of carbon cloth.

[0004] However, this type of long metal-core arrow shaft has significant technical drawbacks: to ensure arrow flight stability and lightweight design, the walls of the metal core must typically be extremely thin. Maintaining a very high degree of straightness across a 30-inch-long metal tube with such a thin wall is extremely difficult to manufacture. More critically, the carbon cloth wrapped around the metal tube requires high-temperature curing; the difference in thermal expansion coefficients between the different materials causes severe deformation during curing, further deteriorating the overall straightness. This directly results in an extremely low yield rate for this type of high-performance arrow shaft, making mass production difficult. Therefore, this invention proposes a metal-carbon fiber hybrid arrow shaft. Summary of the Invention

[0005] In response to the above situation, this invention proposes a metal-coated carbon fiber arrow shaft, which solves the problems of high processing difficulty, difficulty in ensuring straightness after high-temperature curing, and extremely low yield of existing long metal-core carbon fiber arrow shafts.

[0006] A metal-carbon fiber arrow shaft includes a middle carbon fiber tube, a head stainless steel tube, a tail metal tube, and a solid connector. The head stainless steel tube is located at the front end of the middle carbon fiber tube, and the tail metal tube is located at the rear end of the middle carbon fiber tube. The solid connector is located inside the middle carbon fiber tube, and the head stainless steel tube and the tail metal tube are connected and fixed to the middle carbon fiber tube through the solid connector. The middle carbon fiber tube, the head stainless steel tube, and the tail metal tube are wrapped with carbon cloth, which is cured by high-temperature baking.

[0007] Furthermore, the intermediate carbon fiber tube is a hollow tube.

[0008] Furthermore, the solid connector is a solid aluminum rod, and the head stainless steel tube and the tail metal tube are pressed together by the solid aluminum rod to form a surface-to-surface contact with the inner wall of the middle carbon fiber tube.

[0009] Furthermore, the tail metal tube is a stainless steel tube.

[0010] Furthermore, the inner diameter of the arrow shaft is 3-3.5 mm.

[0011] Furthermore, the length of the intermediate carbon fiber tube is 22-26 inches, the length of the head stainless steel tube is 2-4 inches, and the length of the tail metal tube is 5-8 inches.

[0012] Compared with the prior art, the significant advantages of this invention are: 1. Improve straightness and yield rate: By adopting a segmented metal structure and shortening the length of the head and tail metal tubes, the processing difficulty of metal parts is significantly reduced; at the same time, combined with the good formability of carbon fiber tubes, the overall bending caused by thermal expansion stress during high-temperature curing is effectively avoided, which greatly improves the straightness of the finished arrow shaft and the yield rate of mass production.

[0013] 2. Enhanced impact resistance and service life: The solid connectors inside the shaft allow for surface-to-surface contact and pressing of the metal tube and the carbon fiber tube, ensuring that the strong impact force during arrow launch is transmitted evenly and effectively to the inside of the shaft, avoiding localized stress concentration and significantly extending the structural durability and service life of the arrow shaft.

[0014] 3. Optimize flight stability: By rationally configuring the front metal tube, the center of gravity of the arrow shaft is effectively adjusted, and the initial velocity of the arrow is increased, thereby enhancing the stability of the arrow in flight and the accuracy of aiming.

[0015] 4. Reduced production and material costs: By abandoning the ultra-long, thin-walled metal core, which is extremely difficult to process, the material handling and equipment processing costs are significantly reduced, making the high-performance arrow shaft more economical to produce. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a metal-carbon fiber hybrid arrow shaft according to the present invention; Figure 2 This is an exploded view of a metal-coated carbon fiber arrow shaft according to the present invention; Figure 3 This is a schematic diagram of the installation of a metal-coated carbon fiber arrow shaft according to the present invention; Figure 4 This is an overall schematic diagram of a metal-coated carbon fiber arrow shaft according to the present invention.

[0017] Figure label: 1. Stainless steel tube at the head; 2. Carbon fiber tube in the middle; 3. Metal tube at the tail; 4. Solid connector. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] A metal-carbon fiber arrow shaft includes a middle carbon fiber tube 2, a head stainless steel tube 1, a tail metal tube 3, and a solid connector 4. The head stainless steel tube 1 is located at the front end of the middle carbon fiber tube 2, and the tail metal tube 3 is located at the rear end of the middle carbon fiber tube 2. The solid connector 4 is located inside the middle carbon fiber tube 2, and the head stainless steel tube 1 and the tail metal tube 3 are connected and fixed to the middle carbon fiber tube 2 through the solid connector 4. The middle carbon fiber tube 2, the head stainless steel tube 1, and the tail metal tube 3 are wrapped with carbon cloth, which is cured by high-temperature baking.

[0020] In specific embodiments, such as Figure 1-4 As shown, a metal-carbon fiber hybrid arrow shaft includes a central carbon fiber tube 2, a head stainless steel tube 1, a tail metal tube 3, and a solid connector 4. The central carbon fiber tube 2 is a hollow tube with an inner diameter of 3-3.5 mm and a length of 22-26 inches. It is made of high-modulus carbon fiber, providing good elasticity and straightness retention. The head stainless steel tube 1 is located at the front end of the central carbon fiber tube 2, with a length of 2-4 inches and a wall thickness greater than traditional metal core tubes to enhance impact resistance. The tail metal tube 3 is located at the rear end of the central carbon fiber tube 2, with a length of 5-8 inches, and is made of stainless steel. The solid connector 4 is a solid aluminum rod located inside the central carbon fiber tube 2. The head stainless steel tube 1 and the tail metal tube 3 are press-fitted to the inner wall of the central carbon fiber tube 2 through the solid aluminum rod, forming a surface-to-surface contact. The central carbon fiber tube 2, head stainless steel tube 1, and tail metal tube 3 are all wrapped with carbon cloth, which is cured and molded at high temperature.

[0021] The manufacturing method of this invention is as follows: A carbon fiber tube is cut to an appropriate size to serve as the intermediate carbon fiber tube 2; a head stainless steel tube 1 and a tail metal tube 3 are prepared separately to ensure that each metal component maintains high straightness; a solid aluminum rod is inserted into the interior of the intermediate carbon fiber tube 2, with both ends forming a face-to-face press-fit connection with the head stainless steel tube 1 and the tail metal tube 3 respectively; high-modulus carbon cloth is wrapped around the outside of the intermediate carbon fiber tube 2, the head stainless steel tube 1, and the tail metal tube 3; the arrow shaft wrapped with carbon cloth is placed in an oven for high-temperature baking to solidify the carbon cloth; after cooling, it is taken out, and the straightness of the finished product is tested and the surface is treated.

[0022] This invention provides various metal-carbon fiber hybrid arrow shafts with a reasonable structural design, simple manufacturing process, and reliable product quality, making them suitable for widespread application in the archery equipment manufacturing field. This invention allows for adjustments to the shape and size according to actual needs, while maintaining the internal structure and principles, demonstrating good industrial practicality and market prospects.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A metal-carbon fiber hybrid arrow shaft, characterized in that, It includes a middle carbon fiber tube (2), a head stainless steel tube (1), a tail metal tube (3), and a solid connector (4); the head stainless steel tube (1) is located at the front end of the middle carbon fiber tube (2), and the tail metal tube (3) is located at the rear end of the middle carbon fiber tube (2); the solid connector (4) is located inside the middle carbon fiber tube (2), and the head stainless steel tube (1) and the tail metal tube (3) are connected and fixed to the middle carbon fiber tube (2) through the solid connector (4); the middle carbon fiber tube (2), the head stainless steel tube (1), and the tail metal tube (3) are wrapped with carbon cloth, which is cured by high temperature baking.

2. The metal-coated carbon fiber arrow shaft according to claim 1, characterized in that, The intermediate carbon fiber tube (2) is a hollow tube.

3. The metal-coated carbon fiber arrow shaft according to claim 1, characterized in that, The solid connector (4) is a solid aluminum rod. The head stainless steel tube (1) and the tail metal tube (3) are connected by pressing with the inner wall of the middle carbon fiber tube (2) through the solid aluminum rod.

4. The metal-coated carbon fiber arrow shaft according to claim 1, characterized in that, The tail metal tube (3) is a stainless steel tube.

5. The metal-coated carbon fiber arrow shaft according to claim 1, characterized in that, The inner diameter of the arrow shaft is 3-3.5 mm.

6. The metal-coated carbon fiber arrow shaft according to claim 1, characterized in that, The length of the intermediate carbon fiber tube (2) is 22-26 inches, the length of the head stainless steel tube (1) is 2-4 inches, and the length of the tail metal tube (3) is 5-8 inches.

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