Racket made of multi-layer composite board

Abstract

The racket made of the multi-layer composite board comprises a racket plate and a handle, the racket plate comprises a panel, a damping ring and a composite core material, and the composite core material is formed by compositing two outer clamping material layers and a foaming material layer; the damping ring forms a ring structure according to the outline of the racket, and the composite core material is embedded in a ring of the damping ring; the panel comprises two layers, and the two layers of panels are laid on the damping ring from the two faces of the damping ring respectively and cover the damping ring and the whole composite core material. According to the racket made of the multi-layer composite board, on the basis that the multi-layer composite board is used for strengthening impact resistance and durability, the overall mass is reduced, the lightweight design of a product is optimized, the noise reduction effect of the racket is improved, damping can be achieved, large vibration, transmitted to the grab handle, of the racket is avoided, and better use experience is brought.

Description

[Technical Field]

[0002] This utility model relates to the field of ball sports equipment technology, and more particularly to the field of Peak racket composite fabric technology. [Background Technology]

[0004] The materials used in Peak rackets usually need to meet the requirements of durability and impact resistance. During the racket manufacturing process, a surface material is usually applied to meet the requirements of strength to withstand impact, while the material's rebound performance and lightweight requirements are also required. Therefore, the requirements for the material are relatively high. Existing technologies also use foamed materials as the covering material for the racket panel.

[0005] Currently, most Peak rackets on the market are made of single-layer polypropylene honeycomb panels. These rackets transmit significant vibrations to the handle upon impact, resulting in poor elasticity and producing a loud, high-frequency sound. Therefore, in certain environments, such as residential communities, playing Peak can easily generate noise and cause disturbance. To address these issues, it is necessary to improve the product structure and optimize its performance to enhance the user experience. [Summary of the Invention]

[0007] This invention addresses the above-mentioned problems by proposing a racket made of multi-layer composite material. Firstly, by utilizing multi-layer composite material to enhance impact resistance and durability while reducing overall weight and optimizing the lightweight design of the product, the invention also improves the noise reduction effect of the racket, thereby reducing vibration and preventing excessive vibration transmitted to the handle, resulting in a better user experience.

[0008] This utility model relates to a multi-layer composite board racket, characterized in that the racket includes a racket blade and a handle, which are integrally formed and connected. The racket blade includes a face plate, a shock-absorbing ring, and a composite core material. The composite core material is composed of two outer interlayers of material and a foamed material layer, with the foamed material layer sandwiched between the two outer interlayers. The outer interlayers are made of foamed polypropylene or polystyrene. The shock-absorbing ring is formed into a ring structure according to the racket's outline, and the composite core material is embedded within the ring. The face plate includes two layers, which are respectively laid on both sides of the shock-absorbing ring containing the composite core material, covering the shock-absorbing ring and the entire composite core material.

[0009] The composite core material includes two outer interlayers and a foamed material layer, wherein the foamed material layer is sandwiched between the two outer interlayers and bonded together by the adhesive layer.

[0010] The polystyrene used as the outer sandwich layer is high-density polystyrene, and its density parameter range is 18k to 30k particle size. The foamed material layer includes ethylene-vinyl acetate copolymer (EVA), thermoplastic polyurethane (TPU) elastic foamed material, ethylene propylene diene monomer, nitrile rubber or epoxy foamed material.

[0011] One or more embedded gaps are provided on the composite core material, and reinforcing ribs are inserted into the embedded gaps.

[0012] The reinforcing rib includes a middle slit part penetrating the embedded gap and bent parts bent on both sides of the composite core material.

[0013] One or two reinforcing ribs are provided in each embedded gap. One reinforcing rib forms a "冖" shape, and two reinforcing ribs form a "工" shape.

[0014] The reinforcing rib is made by hot-melt pressing of glass fiber prepreg or carbon fiber prepreg.

[0015] The handle part of the racket includes a handle body, a panel and a non-slip grip body. Panels are provided on both sides of the handle body, and a non-slip grip body is provided outside the panels.

[0016] For the racket made of multi-layer composite board involved in the present utility model, firstly, on the basis of strengthening impact resistance and durability by using multi-layer composite board, the overall quality is reduced and the product lightweight design is optimized. Secondly, the noise reduction effect of the racket is improved, and it can shock-absorb, avoiding large vibrations transmitted from the racket to the handle, bringing a better use experience.

Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a racket made of a multi-layer composite board involved in the present utility model;

[0019] Figure 2 It is a schematic diagram of the disassembled structure of a racket made of a multi-layer composite board involved in the present utility model;

[0020] Figure 3 It is a schematic diagram of the disassembled structure of a racket made of a multi-layer composite board involved in the present utility model;

[0021] Figure 4 It is a sectional view of the structure of Embodiment 2 of a racket made of a multi-layer composite board involved in the present utility model;

[0022] Among them: 10, racket board; 20, handle; 21, handle body; 22, panel; 23, non-slip grip body;

[0023] 11, panel; 12, shock-absorbing ring; 13, composite core material;

[0024] 131, outer sandwich material layer; 132, foamed material layer;

[0025] 14. Embedded gap;

[0026] 15. Reinforcing rib; 151. "冖" type; 152. "工" type.

Specific implementation manner

[0028] The present utility model will be described in detail below in conjunction with the drawings and embodiments. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0030] Embodiment 1:

[0031] Please refer to the attached Figure 1 , which shows an exploded structure diagram of a multi-layer composite board racket. The racket is characterized in that the racket includes a racket board 10 and a handle 20, and the racket board 10 and the handle 20 are integrally formed and connected. The racket board 10 includes a face plate 11, a shock-absorbing ring 12, and a composite core material 13. The composite core material 13 is composed of two outer sandwich material layers 131 and a foaming material layer 132. The foaming material layer 132 is sandwiched between the two outer sandwich material layers 131; the outer sandwich material layer is made of foamed polypropylene or polystyrene;

[0032] The shock-absorbing ring 12 forms a ring structure according to the outer contour of the racket, and the composite core material 13 is embedded in the ring of the shock-absorbing ring 12; the face plate 11 includes two layers, and the two face plates 11 are respectively laid on both sides of the shock-absorbing ring 12 embedding the composite core material 13 to cover the entire shock-absorbing ring 12 and the composite core material 13.

[0033] The polystyrene used as the outer sandwich layer is high-density polystyrene, and its density parameter range is 18k~30k particle size.

[0034] The outer layer 131 is made of foamed polypropylene or high-density polystyrene, forming a sandwich-like structure with the foamed material layer 132. This sandwich structure design, compared to traditional single-layer metal plates or plastic honeycomb plates, not only makes the Peak racket lighter overall and improves the comfort of hitting the ball;

[0035] Furthermore, the outer layer of 131 material is lightweight and durable, and combined with the shock-absorbing ring, it can effectively absorb the amplitude of the impact, further reducing the audio and volume of the impact, resulting in a good noise reduction effect. At the same time, an additional face material is added on top of the composite core material, making the racket blade more durable, increasing the friction between the racket face and the Peak ball during impact, increasing the spin speed of the Peak ball, and further optimizing the feel during the swing.

[0036] The composite core material 13 includes two outer interlayers 131 and a foamed material layer 132, wherein the foamed material layer is sandwiched between the two outer interlayers and bonded together by the adhesive layer.

[0037] The composite core material consists of multiple layers of different materials bonded together by adhesive layers (not shown). Two layers of polystyrene or foamed polypropylene are bonded to the top and bottom surfaces of the foam material layer 132 by adhesive layers, which can effectively absorb the amplitude of the impact. Combined with the setting of the shock absorption ring, it can further effectively reduce the audio and volume of the impact, and has a good noise reduction effect. In addition, the cork material layer is more environmentally friendly than the traditional plastic honeycomb board, making the Peak racket more durable overall.

[0038] The foaming material layer 132 includes ethylene-vinyl acetate copolymer (EVA), thermoplastic polyurethane (TPU) elastic foaming material, ethylene propylene diene monomer (EPDM), nitrile rubber, or epoxy foaming material.

[0039] The handle 20 of the racket includes a handle body 21, a panel 22, and an anti-slip grip body 23. The panel 22 is provided on both sides of the handle body 21, and the anti-slip grip body 23 is provided outside the panel 22.

[0040] Example 2:

[0041] In Example 2, we optimized the design based on Example 1 by adding reinforcing ribs:

[0042] One or more embedded gaps are provided on the composite core material 13, and reinforcing ribs 15 are inserted into the embedded gaps. The embedded gaps are actually fine slits that penetrate through the upper and lower surfaces of the composite core material. The prefabricated glass fiber cloth and carbon fiber cloth are inserted into the gaps, and a part is reserved on each of the upper and lower surfaces, which is bent and adhered to the two surfaces of the composite core material 13 and formed by thermoplastic pressing to form the reinforcing ribs. The part of the reinforcing ribs added to the composite core material addresses the problem that the material has high hardness but insufficient toughness, strengthening the structural framework part of the entire composite material. Moreover, the material used is only the prepreg cloth, and the weight increase of the whole can be almost ignored. It is light in weight and the impact resistance is greatly improved.

[0043] The reinforcing rib 15 includes a middle slit part that penetrates the embedded gap and a bent part that is bent on the two surfaces of the composite core material.

[0044] One or two reinforcing ribs 15 are provided in each embedded gap. One reinforcing rib forms a "冖" shape 151, and two reinforcing ribs form a "工" shape 152.

[0045] The reinforcing rib 15 is formed by hot-melt pressing of glass fiber prepreg cloth or carbon fiber prepreg cloth.

[0046] For the racket made of multi-layer composite plates involved in the present invention, firstly, on the basis of strengthening the impact resistance and durability, the overall quality is reduced to optimize the lightweight design of the product. Secondly, the noise reduction effect of the racket is improved, and it can shock-absorb, avoiding large vibrations transmitted from the racket to the handle, bringing a better use experience. Moreover, reinforcing ribs are added to the composite core plate to further strengthen the strength of the racket and improve the durability.

[0047] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention is disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in this field, without departing from the scope of the technical solution of the present invention, when making some changes or modifications using the above-disclosed technical content as equivalent change equivalent embodiments, but as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical means of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A multi-layer composite racket, said racket comprising a racket plate and a handle, the racket plate and the handle being integrally connected, characterized in that, The racket board includes a faceplate, a shock-absorbing ring, and a composite core material. The composite core material is composed of two outer sandwich material layers and a foaming material layer, and the foaming material layer is sandwiched between the two outer sandwich material layers; the outer sandwich material layer is made of foamed polypropylene or polystyrene; the shock-absorbing ring forms a ring structure according to the outline of the racket, and the composite core material is embedded in the ring of the shock-absorbing ring; the faceplate includes two layers, and the two faceplates are respectively laid on both sides of the shock-absorbing ring with the embedded composite core material, covering the shock-absorbing ring and the composite core material as a whole.

2. The multi-layer composite board racket according to claim 1, wherein, The composite core material includes two outer sandwich material layers and one foaming material layer, and the foaming material layer is sandwiched between the two outer sandwich material layers and is bonded through an adhesive layer.

3. The multi-layer composite board racket according to claim 2, wherein, The polystyrene used as the outer sandwich layer is high-density polystyrene, and its density parameter range is 18k to 30k particle size.

4. The multi-layer composite board of any one of claims 1-3, wherein, The foaming material layer includes ethylene-vinyl acetate copolymer, thermoplastic polyurethane elastomeric foaming material, ethylene propylene diene monomer, nitrile rubber, or epoxy foaming material.

5. The multi-layer composite board racket according to claim 4, wherein, One or more embedded gaps are provided on the composite core material, and reinforcing ribs are inserted in the embedded gaps.

6. The multi-layer composite board of claim 5, wherein, The reinforcing rib includes a middle seam portion penetrating the embedded gap and bent portions bent on both sides of the composite core material.

7. The multi-layer composite board racket according to claim 5, wherein, One or two reinforcing ribs are provided in each embedded gap. One reinforcing rib forms a "冖" structure, and two reinforcing ribs form a "工" structure.

8. The multi-layer composite board of claim 7, wherein, The reinforcing rib is formed by hot-melt pressing of fiberglass prepreg or carbon fiber prepreg.

9. The multi-layer composite board of claim 1, wherein, The handle part of the racket includes a handle body, a faceplate, and a non-slip grip body. Faceplates are provided on both sides of the handle body, and a non-slip grip body is provided outside the faceplate.

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