Reducing type carbon-coated aluminum arrow shaft and arrow thereof

Abstract

The utility model relates to the technical field of arrow shaft manufacturing, in particular to a variable-diameter carbon-coated aluminum arrow shaft which is provided with an aluminum pipe, a carbon fiber layer is arranged on the outer edge of the aluminum pipe, and the carbon fiber layer is sequentially provided with a first cylindrical section, a first circular truncated cone section, a second cylindrical section, a second circular truncated cone section and a third cylindrical section. The carbon fiber layer comprises a spiral winding carbon fiber layer arranged inside and a rolled carbon fiber layer arranged outside. By arranging the spirally wound carbon fiber layer and the rolled carbon fiber layer, the strength of the arrow shaft is improved, the spirally wound carbon fiber layer enables the carbon filaments to be distributed in the transverse direction and the longitudinal direction, and in the flying process of the arrow shaft, the transversely distributed carbon filaments can enhance the transverse external force resisting capacity of the arrow shaft; the longitudinally distributed carbon filaments can improve the strength of the arrow shaft in the axial direction and are not prone to tensile deformation or breakage in the length direction, the impact resistance of the arrow shaft can be enhanced through the multi-layer smooth filament rolling structure, the arrow shaft is protected against damage, and normal use and flight performance of the arrow are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to arrow shaft manufacturing technical field especially relates to a variable diameter formula carbon package aluminium arrow shaft and arrow thereof. BACKGROUND

[0002] The carbon package aluminium arrow shaft is a kind of arrow shaft structure combined with aluminium pipe and carbon fiber material, aims at using the lightweight of aluminium pipe and the high-strength characteristics of carbon fiber, improves the overall performance of arrow shaft.

[0003] Although the carbon package aluminium arrow shaft in prior art has certain advantages in lightweight and strength, still there are many deficiencies, limit its performance and use effect in practical application. First, existing arrow shaft usually adopts fixed diameter design, leads to needing to equip multiple specifications of string clamp and arrow head, increases use cost and complexity. Secondly, the carbon fiber layer structure design in prior art is relatively single, transverse and longitudinal strength distribution is unbalanced, so that arrow shaft is easily influenced by external force in flight process, leads to deformation or fracture, especially when bearing larger tension and impact force, the stability and durability of arrow shaft are insufficient. Meanwhile, the impact resistance of existing arrow shaft is poor, when arrow contacts target, is easily damaged due to impact force, influences normal use and flight performance of arrow. SUMMARY

[0004] To solve the above problems, the application provides a variable diameter formula carbon package aluminium arrow shaft, which is provided with an aluminium pipe, a carbon fiber layer is arranged on the outer edge of the aluminium pipe, the carbon fiber layer is sequentially provided with a first cylindrical segment, a first circular truncated cone segment, a second cylindrical segment, a second circular truncated cone segment and a third cylindrical segment, and the carbon fiber layer includes a spiral-wound carbon fiber layer arranged inside and a rolled carbon fiber layer arranged outside.

[0005] In one embodiment, the first cylindrical segment is an arrow tail end, the third cylindrical segment is an arrow head end, the diameter of the third cylindrical segment is greater than that of the first cylindrical segment, and the length of the first circular truncated cone segment is greater than that of the second circular truncated cone segment.

[0006] In one embodiment, the outer diameter of the first cylindrical segment is 4.5±0.02mm, and the length is 101.6±0.2mm, the length of the first circular truncated cone segment is 114.3±0.2mm, the outer diameter of the third cylindrical segment is 4.7±0.02mm, and the length is 101.6±0.2mm, and the length of the second circular truncated cone segment is 53.5±0.2mm.

[0007] An arrow includes a variable diameter formula carbon package aluminium arrow shaft, an arrow head, arrow feathers and a string clamp are arranged on the arrow shaft, the arrow feathers are three in total, each of the arrow feathers is spiral-shaped, and adjacent arrow feathers are arranged at an angle of 120°.

[0008] In one embodiment, the arrow feather is fixed on the arrow shaft by double-sided tape, and the two ends of the arrow feather are fixed by transparent tape.

[0009] In one embodiment, a tail pin is arranged between the arrow shaft and the string clamp.

[0010] In one embodiment, the arrow head adopts a two-section breakable structure, each section is 10 grains, and the arrow head adopts a tungsten steel alloy arrow head.

[0011] The utility model discloses the beneficial effect lies in:

[0012] The application discloses a variable-diameter carbon-coated aluminum arrow shaft, which is provided with an aluminum pipe, the outer edge of the aluminum pipe is provided with a carbon fiber layer, the carbon fiber layer is sequentially provided with a first cylindrical section, a first circular truncated cone section, a second cylindrical section, a second circular truncated cone section and a third cylindrical section, and the carbon fiber layer comprises a spiral-wound carbon fiber layer arranged inside and a rolled carbon fiber layer arranged outside. The carbon fiber layer is divided into different cylindrical sections and circular truncated cone sections, the first cylindrical section and the third cylindrical section of the carbon fiber layer have a fixed diameter, and the diameter of the second cylindrical section is different according to different required deflections, so that the types of the string clamp and the arrow head are reduced, different deflection requirements are met, and different use scenarios are met. The first circular truncated cone section and the second circular truncated cone section are connected with cylindrical sections with different diameters, play a role in smooth transition, realize natural connection between the arrow shaft and the parts with different diameters, reduce the mutation in aerodynamics, reduce air resistance, and make the arrow more smooth in the flight process. The spiral-wound carbon fiber layer and the rolled carbon fiber layer are arranged, the strength of the arrow shaft is improved, the carbon wires are distributed in two directions, that is, the horizontal direction and the vertical direction, the carbon wires distributed in the horizontal direction can enhance the ability of the arrow shaft to resist the horizontal external force during the flight of the arrow shaft, and the carbon wires distributed in the vertical direction can improve the strength of the arrow shaft in the axial direction and are not prone to tensile deformation or breakage in the length direction. The outer multi-layer spiral-wound carbon fiber layer mainly increases the longitudinal strength of the arrow shaft, the arrow shaft mainly bears the air resistance along the flight direction and the longitudinal tension generated when the arrow is drawn during the flight of the arrow, and the spiral-wound carbon fiber layer can effectively resist these forces, so that the arrow shaft has good stability and strength in the longitudinal direction and is not prone to bending or deformation. Meanwhile, the multi-layer spiral-wound structure can also enhance the impact resistance of the arrow shaft, so that the arrow shaft can better bear the impact force when the arrow contacts the target, the arrow shaft is protected from being damaged, and the normal use and flight performance of the arrow are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view of the arrow shaft of the utility model;

[0014] Figure 2 It is Figure 1 It is an A-A sectional view;

[0015] Figure 3 It is an explosion view of the arrow;

[0016] Figure 4 As Figure 3 An enlarged view of A;

[0017] Figure 5 As Figure 3 An enlarged view of B;

[0018] Figure 6 As the left view of an arrow;

[0019] Explanation of symbols in the figure:

[0020] 1, aluminum pipe;

[0021] 2, carbon fiber layer; 21, first cylindrical section; 22, first circular truncated cone section; 23, second cylindrical section; 24, second circular truncated cone section; 25, third cylindrical section; 26, spiral wound carbon fiber layer; 27, rolled carbon fiber layer;

[0022] 3, arrowhead;

[0023] 4, arrow feather;

[0024] 5, string clamp;

[0025] 6, tail pin. DETAILED DESCRIPTION

[0026] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0027] It should be noted that the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] As Figure 1 , 2 shown, a variable-diameter carbon-coated aluminum arrow shaft is provided with an aluminum pipe 1, the outer edge of the aluminum pipe 1 is provided with a carbon fiber layer 2, the carbon fiber layer 2 is sequentially provided with a first cylindrical section 21, a first circular truncated cone section 22, a second cylindrical section 23, a second circular truncated cone section 24, and a third cylindrical section 25, the carbon fiber layer 2 includes a spiral wound carbon fiber layer 26 arranged inside and a rolled carbon fiber layer 27 arranged outside.

[0029] Specifically, the aluminum pipe 1 provides a certain basic strength and weight ratio for the arrow shaft as an internal support structure, and the carbon fiber layer 2 is wrapped around the outer edge of the aluminum pipe 1 to work together with the aluminum pipe 1 to improve the overall performance of the arrow shaft. The first cylindrical section 21 and the third cylindrical section 25 of the carbon fiber layer 2 have fixed diameters, while the diameter of the second cylindrical section 23 varies according to the required deflection, reducing the types of string clamps and arrowheads, adapting to different deflection requirements, and meeting different use scenarios. The first circular segment 22 and the second circular segment 24 connect cylindrical sections of different diameters, serving as a smooth transition, allowing the arrow shaft to naturally connect between different diameter sections, reducing aerodynamic discontinuity, reducing air resistance, and making the arrow smoother during flight. The aluminum pipe 1 has a certain strength and stiffness, which can provide internal support for the arrow shaft. The density of aluminum is larger than that of carbon cloth, and the weight is heavier than that of carbon cloth. The use of thin-walled aluminum pipe 1 in the arrow shaft can make the weight distribution of the arrow shaft present as heavy in the middle and light on the outside. This weight distribution can generate better centripetal force for the arrow during flight, allowing the arrow shaft to rotate stably around its axis, reducing the swing and deviation of the arrow during flight, and improving the stability and accuracy of flight. The spiral-wound carbon fiber layer 26 has carbon filaments distributed in two directions, horizontal and vertical. During the flight of the arrow shaft, the horizontally distributed carbon filaments can enhance the ability of the arrow shaft to resist horizontal external forces; the vertically distributed carbon filaments can improve the strength of the arrow shaft in the axial direction, and are not prone to stretching deformation or breaking in the length direction. The outer multi-layered carbon fiber layer 27 is mainly to increase the longitudinal strength of the arrow shaft. During arrow flight, the arrow shaft mainly bears the air resistance along the flight direction and the longitudinal tension generated during the drawing of the bow. The wound carbon fiber layer 27 can effectively resist these forces, allowing the arrow shaft to maintain good stability and strength in the longitudinal direction and not prone to bending or deformation. At the same time, the multi-layered wound structure can also enhance the impact resistance of the arrow shaft. When the arrow contacts the target, it can better withstand the impact force, protect the arrow shaft from damage, and ensure the normal use and flight performance of the arrow.

[0030] As shown in Figure 1 the first cylindrical section 21 is at the tail end of the arrow, the third cylindrical section 25 is at the head end of the arrow, the diameter of the third cylindrical section 25 is greater than the diameter of the first cylindrical section 21, and the length of the first circular segment 22 is greater than the length of the second circular segment 24.

[0031] Specifically, the first cylindrical segment 21 has an outer diameter of 4.5±0.02mm and a length of 101.6±0.2mm, the first circular truncated cone segment 22 has a length of 114.3±0.2mm, the third cylindrical segment 25 has an outer diameter of 4.7±0.02mm and a length of 101.6±0.2mm, and the second circular truncated cone segment 24 has a length of 53.5±0.2mm. The diameter of the third cylindrical segment 25 is larger than that of the first cylindrical segment 21, so that the whole arrow is front light and rear heavy, the center of gravity of the arrow is closer to the arrowhead during flight, the arrowhead leads the arrow tail during flight, the swing of the arrow shaft is reduced, and the arrow can fly along the predetermined trajectory more stably.

[0032] As shown in Figures 3-6 , an arrow comprises a variable-diameter carbon-coated aluminum arrow shaft, the arrow shaft is provided with an arrowhead 3, arrow fletching 4, and a string clamp 5. The arrow fletching 4 comprises three pieces, each of the arrow fletching 4 is in a spiral shape, and adjacent arrow fletting 4 are arranged at an angle of 120°.

[0033] Specifically, each arrow fletching 4 is in a spiral shape and very thin, is in a circular arc shape, and is flattened into a water drop shape, which greatly reduces air resistance and enables the arrow to fly at a higher speed. The spiral arrow fletching 4 can further reduce air resistance when rotating, so that the arrow flies more smoothly. The three pieces of arrow fletting 4 are evenly distributed on the arrow shaft at an angle of 120°, so that the air acting force on the arrow during flight is more uniform, the balance of the arrow is maintained, and the swing and other unstable phenomena of the arrow during flight are prevented, thereby ensuring that the arrow flies along the predetermined trajectory.

[0034] As shown in Figure 4 , the arrow fletting 4 is fixed to the arrow shaft by double-sided tape, and the two ends of the arrow fletting 4 are fixed by transparent tape.

[0035] Specifically, the combination of double-sided tape and transparent tape provides double fixing protection for the arrow fletting 4. The double-sided tape provides basic fixing force, and the additional fixing of the transparent tape at the two ends of the arrow fletting 4 further increases the firmness of the connection, which can effectively prevent the arrow fletting 4 from loosening and falling off during the launching and flight of the arrow, and ensure the stable performance of the arrow.

[0036] As shown in Figure 4 , a tail nail 6 is arranged between the arrow shaft and the string clamp 5.

[0037] Specifically, one end of the tail nail 6 is inserted into the arrow shaft, the other end is inserted into the string clamp 5, and the string clamp 5 is sleeved onto the outer circle of the arrow shaft, so as to ensure that the string clamp 5, the tail nail 6 and the arrow shaft are concentrically connected, the relative positions between the components during the process of drawing the bow and launching the arrow are kept stable, the tightness and concentricity of the connection between the string clamp 5 and the arrow shaft are ensured, the arrow can maintain a good posture during flight, the swing or deviation caused by unstable connection of the components is reduced, and thus the arrow can fly along the predetermined trajectory stably, the shooting accuracy and hit rate are improved.

[0038] As shown in the figure, the arrow 3 adopts a two-section breakable structure, each section being 10 grains, and the arrow 3 adopts a tungsten steel alloy arrow. Figure 5 Specifically, the arrow 3 adopts a two-section breakable structure, each section being 10 grains, and the arrow 3 can be combined to have three weights of 100 grains, 110 grains and 120 grains.

[0039] The shooter can flexibly select the arrow 3 with a suitable weight according to different shooting scenes, such as the distance of the target and the size of the wind.

[0040] Compared with the prior art, the application has the following beneficial effects:

[0041] The application discloses a variable-diameter carbon-coated aluminum arrow shaft, which is provided with an aluminum pipe 1, an outer edge of the aluminum pipe 1 is provided with a carbon fiber layer 2, the carbon fiber layer 2 is sequentially provided with a first cylindrical section 21, a first circular truncated cone section 22, a second cylindrical section 23, a second circular truncated cone section 24 and a third cylindrical section 25, and the carbon fiber layer 2 comprises a spiral-wound carbon fiber layer 26 arranged in the inside and a rolled carbon fiber layer 27 arranged in the outside. The carbon fiber layer 2 is divided into different cylindrical sections and circular truncated cone sections, the first cylindrical section 21 and the third cylindrical section 25 of the carbon fiber layer 2 have a fixed diameter, and the diameter of the second cylindrical section 23 is different according to different required deflections, so that the types of the chord clamp and the arrow head are reduced, different deflection requirements are adapted to, and different use scenes are met. The first circular truncated cone section 22 and the second circular truncated cone section 24 connect the cylindrical sections with different diameters, play a smooth transition role, realize natural connection between the parts with different diameters, reduce the mutation in aerodynamics, reduce air resistance, and make the arrow more smooth in the flying process. The spiral-wound carbon fiber layer 26 makes the carbon wires be distributed in two directions of the horizontal direction and the vertical direction, the carbon wires distributed in the horizontal direction can enhance the ability of the arrow shaft to resist the horizontal external force in the flying process of the arrow shaft, and the carbon wires distributed in the vertical direction can improve the strength of the arrow shaft in the axial direction and are not prone to tensile deformation or breakage in the length direction. The multiple-layered rolled carbon fiber layer 27 arranged outside mainly increases the vertical strength of the arrow shaft, the arrow shaft mainly bears the air resistance along the flying direction and the vertical tension generated when the arrow is drawn in the flying process of the arrow, the rolled carbon fiber layer 27 can effectively resist these forces, so that the arrow shaft has good stability and strength in the vertical direction and is not prone to bending or deformation. Meanwhile, the multiple-layered rolled structure can also enhance the impact resistance of the arrow shaft, can better bear the impact force when the arrow contacts the target, protects the arrow shaft from being damaged, ensures the normal use and flying performance of the arrow.

[0042] Although the embodiments of the present application have been shown and described, it is to be understood that for the purpose of the present application, the embodiments can be changed, modified, replaced and varied in many ways without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0043] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A telescopic carbon-clad aluminum arrow shaft, provided with an aluminum tube (1), the outer edge of the aluminum tube (1) is provided with a carbon fiber layer (2), the carbon fiber layer (2) is sequentially provided with a first cylindrical segment (21), a first circular truncated cone segment (22), a second cylindrical segment (23), a second circular truncated cone segment (24), and a third cylindrical segment (25), characterized in that, The carbon fiber layer (2) comprises a spiral wound carbon fiber layer (26) arranged inside and a rolled carbon fiber layer (27) arranged outside.

2. The variable diameter carbon-clad aluminum arrow shaft of claim 1, wherein, The first cylindrical section (21) is an arrow tail end, the third cylindrical section (25) is an arrow head end, the diameter of the third cylindrical section (25) is larger than that of the first cylindrical section (21), and the length of the first circular section (22) is larger than that of the second circular section (24).

3. The variable diameter carbon-clad aluminum arrow shaft of claim 1, wherein, The outer diameter of the first cylindrical section (21) is 4.5±0.02mm, the length is 101.6±0.2mm, the length of the first circular section (22) is 114.3±0.2mm, the outer diameter of the third cylindrical section (25) is 4.7±0.02mm, the length is 101.6±0.2mm, and the length of the second circular section (24) is 53.5±0.2mm.

4. An arrow characterized by, The arrow comprises a variable-diameter carbon-aluminum arrow shaft as claimed in any one of claims 1 to 3, and an arrow head (3), arrow fletching (4) and string clamp (5) are arranged on the arrow shaft, the arrow fletching (4) comprises three pieces, each piece of the arrow fletching (4) is spiral-shaped, and adjacent pieces of the arrow fletching (4) are arranged at an angle of 120°.

5. An arrow according to claim 4, wherein, The arrow fletching (4) is fixed on the arrow shaft by double-sided tape, and the two ends of the arrow fletching (4) are fixed by transparent tape.

6. An arrow according to claim 4 wherein, A tail pin (6) is arranged between the arrow shaft and the string clamp (5).

7. An arrow according to claim 4 wherein, The arrow head (3) adopts a two-section breakable structure, each section is 10 grains, and the arrow head (3) adopts a tungsten steel alloy arrow head.

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