Hybrid fiber composite hockey stick

Abstract

The invention relates to the technical field of sports equipment, in particular to a hybrid fiber composite hockey stick which comprises a stick handle, a stick blade and a reinforcing body. The rod handle comprises a rod handle core part and a rod handle surface layer, the rod handle surface layer is of a hollow cylindrical structure, the rod handle core part is located in the rod handle surface layer, the rod handle surface layer is made of a three-dimensional woven composite material, and the rod handle core part is of a honeycomb structure; the rod blade comprises a rod blade core part and a rod blade surface layer wrapping the rod blade core part, the rod blade core part is made of a three-dimensional woven composite material, and the rod blade surface layer is a hybrid woven layer; the reinforcing body is made of carbon fibers, one end of the reinforcing body is embedded into the core portion of the rod handle, and the other end of the reinforcing body is embedded into the core portion of the rod blade. According to the golf club, the overall performance of the golf club is improved, the impact resistance of the connecting turning part is particularly enhanced, the service life of the golf club is prolonged, meanwhile, the weight is reduced, and the use experience of athletes is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sports equipment, in particular to a hybrid fiber composite material hockey stick. Background Art

[0002] Hockey is a competitive sport, and the performance of the hockey stick, as the core equipment of the sport, directly affects the performance of the players. Traditional hockey sticks are mostly made of metal or single-material carbon fiber composite materials. Although they have achieved lightweight to a certain extent, there is still room for improvement in impact toughness, elasticity and overall weight.

[0003] Currently, hockey sticks on the market are mainly made of carbon fiber composite materials to achieve lightweight. However, while these traditional composite hockey sticks meet the rigidity requirements, their impact toughness and elasticity are limited, and the overall weight still has room for improvement. In addition, the impact resistance of the connection between the handle and the blade of traditional sticks is particularly important, but it is often insufficient.

[0004] Therefore, the technical problems existing in the existing carbon fiber composite hockey sticks mainly include:

[0005] ① Limitations of impact resistance, toughness and elasticity: Although lightweight is achieved, the toughness and elasticity of the club are insufficient under high-intensity impact, affecting its service life and the safety of athletes.

[0006] ② Room for weight optimization: Although carbon fiber composites have reduced the weight of golf clubs, there is still room to further reduce the weight to improve athlete flexibility.

[0007] ③ Strength problem of the connection part: The connection bend between the handle and the blade is the part of the club that is subject to the greatest force. Under the existing technology, the impact resistance of this part is insufficient, which can easily cause damage to the club. Summary of the invention

[0008] In view of the deficiencies in the prior art, the purpose of the embodiments of the present invention is to provide a hybrid fiber composite hockey stick, which optimizes the weight and impact resistance of the hockey stick while ensuring the strength and durability of the hockey stick. It adopts a mixed and multi-dimensional braided structure of multiple high-performance fibers to improve the comprehensive performance of the composite material and ensure the reliability and long life of the hockey stick in high-intensity use.

[0009] In order to achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0010] A hybrid fiber composite hockey stick includes: a handle, a blade and a reinforcement body; the handle includes a handle core and a handle surface layer, the handle surface layer is a hollow cylindrical structure, the handle core is located inside the handle surface layer, the handle surface layer is composed of a three-dimensional woven composite material, and the handle core is a honeycomb structure. This design reduces the weight of the handle while maintaining good mechanical rigidity.

[0011] The blade includes a blade core and a blade surface layer coated outside the blade core, wherein the blade core is a three-dimensional woven composite material, and the blade surface layer is a mixed woven layer; the reinforcement is a carbon fiber, one end of the reinforcement is embedded in the handle core, and the other end is embedded in the blade core. By embedding the bent sheet reinforcement, the impact resistance and rigidity of the connection part are improved. When designing the reinforcement, the embedding depth and embedding method are considered, so that the reinforcement can effectively withstand the impact force and prevent the blade and the handle from being separated or broken under high load.

[0012] Optionally, the surface layer of the handle is made of a three-dimensional woven reinforced fabric of high-strength carbon fiber and high-modulus carbon fiber, which is compounded with a thermoplastic resin matrix. This design enables the handle to have the characteristics of high strength and high rigidity, while effectively reducing the weight.

[0013] Optionally, the handle core is made of any one of glass cloth honeycomb core material, paper honeycomb core material or Nomex honeycomb core material. Glass cloth honeycomb core material has good strength and rigidity, and is light in weight. Paper honeycomb core material is economical and lightweight. Nomex honeycomb core material has good high temperature resistance, has a very high strength to weight ratio, and is suitable for high-performance applications.

[0014] Optionally, the blade core is made of a three-dimensional woven reinforced fabric mixed with high-strength carbon fiber and high-tenacity fiber, which is compounded with a thermoplastic resin matrix, and the blade core and the handle surface are integrally woven. This hybrid structure can significantly improve the impact resistance and toughness of the blade. The high-tenacity fiber is selected from any one of aramid fiber and UHMWPE fiber.

[0015] Optionally, the hybrid braided layer is made of a two-dimensional braided or three-dimensional braided reinforced fabric of high-strength carbon fiber and high-tenacity fiber, composited with a thermoplastic resin matrix, and applied to the surface of the core of the blade. This hybrid braided layer provides good wear resistance and impact resistance, while ensuring high strength and high rigidity of the blade.

[0016] Optionally, the reinforcement is composed of a high modulus carbon fiber two-dimensional woven structure and a thermoplastic resin matrix. The composite reinforcement is embedded in the connecting bend of the shaft and the blade, effectively improving the impact resistance and rigidity of the connecting part, preventing the club from breaking or deforming during use, and greatly improving the stability and damage resistance during exercise.

[0017] Optionally, the high-strength carbon fiber is any one of T300, T700, T800 and T1000; the three-dimensional braided structure is any one of three-dimensional four-way, three-dimensional five-way, three-dimensional six-way and three-dimensional seven-way, or a combination of multiple braided structures. With this composite structure, the rigidity and torque resistance of the club are significantly improved, and it is particularly suitable for use in high-intensity sports.

[0018] Optionally, the thermoplastic resin is selected from any one of polypropylene, polyurethane, polyetherketone, polyetheretherketone, polyphenylene sulfide and polyamide, which not only have good strength and toughness, but also maintain good stability in high temperature environments. The resin content is controlled between 30% and 60% to ensure good wettability of the resin to the fiber and form a strong composite material during the manufacturing process, further enhancing the durability and stability of the club.

[0019] Optionally, the high modulus carbon fiber is selected from any one of M40, M55, M60, M40J, M55J and M60J. Selecting high modulus carbon fibers of models such as M40, M55, and M60 as reinforcement materials can effectively withstand impact and tensile loads and improve performance during exercise.

[0020] Optionally, the two-dimensional planar braided structure is selected from any one of plain, twill and satin braided structures. Plain braiding has high wear resistance, twill braiding can provide good tensile properties, and satin braiding provides higher strength and smoothness. When making a specific selection, a suitable braided structure is selected for compounding according to the actual force requirements of the blade to ensure that the club can withstand repeated impact and friction during use.

[0021] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0022] 1. The present invention adopts a multi-dimensional braided reinforcement structure of mixed fibers, combined with a lightweight honeycomb core material and a high modulus carbon fiber reinforcement, to achieve a lightweight, high-strength, high-toughness, impact-resistant, and friction-resistant composite hockey stick, solving the problems of impact toughness, elasticity, and weight of hockey sticks in the prior art. This design not only improves the overall performance of the club, but also particularly enhances the impact resistance of the connecting and turning parts, prolongs the service life of the club, while reducing the weight and improving the athlete's experience.

[0023] 2. The multi-dimensional braided reinforcement structure of mixed fibers is adopted, which brings into play the comprehensive advantages of the overall rigidity of the three-dimensional braided structure and the impact resistance of the two-dimensional laminated structure, effectively improving the comprehensive performance of the hockey stick body.

[0024] 3. The lightweight honeycomb core material inside the hockey stick handle effectively reduces the weight of the overall composite stick body, ensuring the mechanical rigidity and anti-deformation properties of the stick body.

[0025] 4. The connection and turning part of the club adopts a high modulus carbon fiber built-in reinforcement structure to ensure the impact resistance of the club during service and its service life.

[0026] Advantages of additional aspects of the present invention will be given in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In addition, the spacing or size between the components is exaggerated to show the positions of the components, and the schematic diagram is only used for illustration.

[0028] Figure 1 is an overall schematic diagram of a hockey stick provided by an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the connection of the reinforcement body provided by an embodiment of the present invention;

[0030] In the figure: 1, the surface layer of the handle; 2, the core of the handle; 3, the reinforcement; 4, the core of the blade; 5, the surface layer of the blade; DETAILED DESCRIPTION

[0031] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Terminology explanation:

[0033] 3D weaving: refers to a technology that can interweave fibers in three dimensions to enhance the overall rigidity and impact resistance of the material. Honeycomb structure: a lightweight and high-strength structure commonly used in the aerospace field. UHMWPE: ultra-high molecular weight polyethylene, a high-performance polymer with a molecular weight of more than 1 million.

[0034] like Figure 1 , Figure 2As shown, the present invention provides a structure of a hockey stick made of a lightweight hybrid fiber woven structure reinforced thermoplastic resin-based composite material, wherein the handle surface layer 1 of the hockey stick is composed of a three-dimensional woven hollow cylindrical composite material, and the handle core 2 is a honeycomb structure lightweight core; the blade (blade core 4 and blade surface layer 5) are composed of a composite material with a combined structure of solid three-dimensional weaving or two-dimensional weaving lamination; a high modulus carbon fiber core reinforcement 3 is preset at the connection bend between the blade and the handle.

[0035] The reinforcing fibers of the three-dimensional woven structure used in the handle of the hockey stick are mainly high-strength carbon fibers mixed with high-modulus carbon fibers to form a preform fabric with a three-dimensional woven structure, wherein the high-strength carbon fibers can be any one of T300, T700, T800, T1000, etc., and the high-modulus carbon fibers can be any one of M40, M55, M60, M40J, M55J, M60J, wherein the ratio of the high-strength carbon fibers to the high-modulus carbon fibers can be flexibly adjusted according to design requirements.

[0036] The three-dimensional braided structure used in the handle portion can be any one of three-dimensional four-directional, three-dimensional five-directional, three-dimensional six-directional, and three-dimensional seven-directional braided structures, or a combination of multiple braided structures.

[0037] The light core inside the handle can be any one of glass cloth honeycomb core, paper honeycomb core or Nomex honeycomb core. The thickness of the composite tubular structure of the handle and the diameter of the light core inside can be flexibly controlled according to design requirements.

[0038] The three-dimensional braided structure composite material used for the blade of the hockey stick is composed of a three-dimensional braided preform structure of mixed high-tenacity fibers with high-strength carbon fibers as the main body. The preform can adopt any one of three-dimensional four-directional, three-dimensional five-directional, three-dimensional six-directional, and three-dimensional seven-directional braided structures or a combination of multiple braided structures.

[0039] The high-strength carbon fiber of the blade can be any one of T300, T700, T800, T1000, etc., and the high-tenacity fiber can be any one of aramid fiber and UHMWPE fiber. The mixing ratio of the two can be flexibly adjusted according to design requirements.

[0040] The two-dimensional woven laminated structure used for the pole blade can adopt the mixed woven laminated structure of the above-mentioned three-dimensional woven high-strength carbon fiber and high-tenacity fiber, wherein the single layer in the two-dimensional weaving can be selected from plain, twill or satin fabrics, and the weaving structure of the single layer of fabric can be designed arbitrarily, and any combination of two-dimensional woven structures can be adopted.

[0041] The core of the blade is formed by integrally weaving the three-dimensional braided structure of the handle, and a two-dimensional braided laminated structure and a three-dimensional braided structure are applied to the outside of the blade for combined design.

[0042] The transition part of the connection bend between the handle and the blade is reinforced with a pre-embedded high modulus carbon fiber core material, wherein the core reinforcement material adopts a bent sheet shape and is embedded in the middle thickness position of the connection bend between the handle and the blade, wherein the high modulus carbon fiber can be any one of M40, M55, M60, M40J, M55J, and M60J, and the reinforced core material adopts the above-mentioned two-dimensional woven fabric structure.

[0043] The handle, blade and connecting and turning parts of the hockey stick are all compositely formed by thermoplastic resin matrix, wherein the content of thermoplastic resin is flexibly adjusted within the range of 30-60%, and the thermoplastic resin can be selected from any type of polypropylene, polyurethane, polyetherketone, polyetheretherketone, polyphenylene sulfide, polyamide, etc. The blade length, width and shaft length can be flexibly adjusted according to design requirements.

[0044] The composite hockey stick adopts a multi-dimensional braided reinforcement structure of mixed fibers, which takes advantage of the overall rigidity of the three-dimensional braided structure and the impact resistance of the two-dimensional laminated structure. In addition, the light honeycomb core material is used inside the handle to effectively reduce the weight of the stick. The high modulus carbon fiber built-in reinforcement structure is used at the connecting corner of the stick to ensure the impact resistance of the stick and its service life. In short, through the mixed combination structure of multiple high-performance fibers, the composite hockey stick has the advantages of light weight, high strength, high toughness, impact resistance, and friction resistance.

[0045] In order to make the technical solution provided by the present invention clearer, the present invention is described with four examples:

[0046] Example 1

[0047] The surface layer of the handle of the hockey stick is made of a hollow cylindrical composite material, which is made of a 1:1 mixture of T1000 high-strength carbon fiber and M55J high-modulus carbon fiber, three-dimensional five-directional weaving and composite molding with a polypropylene resin matrix. The resin content is 40%, and the thickness of the cylindrical structure is 1 cm.

[0048] The core of the handle is made of lightweight glass cloth honeycomb core material with a thickness of 1cm.

[0049] The core of the hockey stick blade is made of T700 high-strength carbon fiber with a three-dimensional five-way braided structure and high-toughness aramid fiber, which is mixed in a ratio of 2:1 and composited with a polyetheretherketone resin matrix with a resin content of 40%.

[0050] The surface of the blade is made of a 1:1 mixture of T1000 high-strength carbon fiber and high-toughness aramid fiber with a three-dimensional seven-way braided structure and a polyetheretherketone resin matrix, with a resin content of 50%. The blade head is 7cm wide and 33cm long.

[0051] The connection bend between the blade and the handle is preset with M55J high modulus carbon fiber composite polyetherketone resin as a reinforcement, with a resin content of 40%. The total length of the shaft is 168cm.

[0052] Example 2

[0053] The surface layer of the handle of the hockey stick is made of a hollow cylindrical composite material, which is made of a 3:1 mixture of T700 high-strength carbon fiber and M60J high-modulus carbon fiber, three-dimensional six-way weaving and composite molding with a polyurethane resin matrix. The resin content is 30%, and the thickness of the cylindrical structure is 0.8 cm.

[0054] The core of the handle is made of lightweight paper honeycomb core material with a thickness of 1.5cm.

[0055] The core of the hockey stick blade is made of T700 high-strength carbon fiber and high-toughness aramid fiber with a three-dimensional six-way braided structure, mixed in a ratio of 3:1 and composited with a polypropylene resin matrix, with a resin content of 40%.

[0056] The surface of the blade is made of a 2D plain weave structure of T1000 high-strength carbon fiber and high-toughness aramid fiber mixed in a ratio of 2:1 with a polyetheretherketone resin matrix, with a resin content of 50%. The blade head is 6cm wide and 30cm long.

[0057] The connection bend between the blade and the handle is preset with M55J high modulus carbon fiber composite polyetherketone resin as a reinforcement, with a resin content of 30%. The total length of the shaft is 160cm.

[0058] Example 3

[0059] The surface layer of the handle of the hockey stick is made of a hollow cylindrical composite material, which is made of a 1:1 mixture of T300 high-strength carbon fiber and M55 high-modulus carbon fiber, three-dimensional five-directional weaving and composite molding with a polyphenylene sulfide resin matrix. The resin content is 30%, and the thickness of the cylindrical structure is 1.5 cm.

[0060] The core of the handle is made of lightweight glass cloth honeycomb core material with a thickness of 0.5cm. The core of the blade of the hockey stick is made of T700 high-strength carbon fiber and high-toughness aramid fiber with a three-dimensional five-way braided structure, mixed in a ratio of 2:1 with a polyetheretherketone resin matrix, with a resin content of 50%.

[0061] The surface of the blade is made of a 3:1 mixture of T1000 high-strength carbon fiber and high-toughness aramid fiber with a two-dimensional twill weave structure and a polyetheretherketone resin matrix, with a resin content of 50%. The blade head is 5cm wide and 28cm long.

[0062] The connection bend between the blade and the handle is preset with M55J high modulus carbon fiber composite polyetherketone resin as a reinforcement, with a resin content of 30%. The total length of the shaft is 150cm.

[0063] Example 4

[0064] The surface layer of the handle of the hockey stick is made of a hollow cylindrical composite material, which is made of T1000 high-strength carbon fiber and M55J high-modulus carbon fiber mixed in a ratio of 2:1, three-dimensional four-way weaving and composite molding with a polypropylene resin matrix. The resin content is 40% and the thickness of the cylindrical structure is 1 cm.

[0065] The core of the handle is made of lightweight Nomex honeycomb core material with a thickness of 1cm.

[0066] The core of the blade of the hockey stick is made of T300 high-strength carbon fiber with a three-dimensional five-directional braided structure and high-toughness UHMWPE fiber, which is mixed in a ratio of 3:1 and composited with a polyamide resin matrix with a resin content of 40%.

[0067] The surface of the blade is made of a 1:1 mixture of T800 high-strength carbon fiber and high-toughness aramid fiber with a two-dimensional satin weave structure and a polyetheretherketone resin matrix, with a resin content of 40%. The blade head is 8cm wide and 35cm long.

[0068] The connection bend between the blade and the handle is preset with M55J high modulus carbon fiber composite polyetherketone resin as a reinforcement, with a resin content of 40%. The total length of the shaft is 170cm.

[0069] Table 1 Test results of hockey stick performance of Examples 1 to 4:

[0070]

[0071] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A hybrid fiber composite hockey stick, characterized in that: include: The handle, blade and reinforcement; The handle comprises a handle core and a handle surface layer, the handle surface layer is a hollow cylindrical structure, the handle core is located inside the handle surface layer, the handle surface layer is composed of a three-dimensional woven composite material, and the handle core is a honeycomb structure; The blade comprises a blade core and a blade surface layer covering the blade core, wherein the blade core is a three-dimensional braided composite material, and the blade surface layer is a mixed braided layer; The reinforcement is carbon fiber, one end of the reinforcement is embedded in the core of the handle, and the other end is embedded in the core of the blade.

2. The hybrid fiber composite hockey stick according to claim 1, characterized in that: The surface layer of the handle is made of a three-dimensional woven reinforced fabric mixed with high-strength carbon fiber and high-modulus carbon fiber, which is compounded with a thermoplastic resin matrix.

3. The hybrid fiber composite hockey stick according to claim 1, characterized in that: The handle core is made of any one of glass cloth honeycomb core material, paper honeycomb core material or Nomex honeycomb core material.

4. The hybrid fiber composite hockey stick according to claim 1, characterized in that: The blade core is made of a three-dimensional woven reinforced fabric mixed with high-strength carbon fiber and high-tenacity fiber, compounded with a thermoplastic resin matrix, and the blade core and the handle surface are integrally woven and formed; Alternatively, the high-tenacity fiber can be any one of aramid fiber and UHMWPE fiber.

5. The hybrid fiber composite hockey stick according to claim 1, characterized in that: The hybrid braided layer is made of a two-dimensional braided or three-dimensional braided reinforced fabric that is hybridized with high-strength carbon fiber and high-tenacity fiber, and is compounded with a thermoplastic resin matrix and is attached to the surface of the core of the blade.

6. The hybrid fiber composite hockey stick according to claim 1, characterized in that: The reinforcement is composed of a high modulus carbon fiber two-dimensional woven structure and a thermoplastic resin matrix.

7. The hybrid fiber composite hockey stick according to claim 2, 4 or 5, characterized in that: The high-strength carbon fiber is selected from any one of T300, T700, T800 and T1000; Alternatively, the three-dimensional woven structure adopts any one of three-dimensional four-directional, three-dimensional five-directional, three-dimensional six-directional and three-dimensional seven-directional woven structures, or a combination of multiple of the above woven structures.

8. The hybrid fiber composite hockey stick according to claim 2, 4, 5 or 6, characterized in that: The thermoplastic resin is selected from any one of polypropylene, polyurethane, polyether ketone, polyether ether ketone, polyphenylene sulfide and polyamide, and the content of the thermoplastic resin is controlled at 30-60%.

9. The hybrid fiber composite hockey stick according to claim 2 or 6, characterized in that: The high modulus carbon fiber is selected from any one of M40, M55, M60, M40J, M55J and M60J.

10. The hybrid fiber composite hockey stick according to claim 5 or 6, characterized in that: The two-dimensional planar weaving structure is selected from any one of plain weave, twill weave and satin weave structures.

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