Table tennis bat
By laying one-way carbon fiber cloth and mesh carbon fiber cloth in sequence outside the core of the table tennis racket and heating it to form an integrated structure, the problem of easy falling off of the traditional table tennis racket is solved, and the structure is simple, low cost and good strength is achieved. Effect.
Patent Information
- Application Number
- CN202420138532.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The glue plate or layered structure of traditional table tennis rackets is prone to fall off, resulting in damage to performance, complex structure and high production costs.
The structure of unidirectional carbon fiber cloth and mesh carbon fiber cloth are laid in sequence outside the core, and an integrated structure is formed through heat treatment, avoiding the need to adhere to the plywood.
It realizes a table tennis racket with simple structure, low cost and good structural strength, and the carbon fiber cloth is not easy to fall off, ensuring the stability and durability of the racket.
Smart Images
Figure CN222467991U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sports equipment, and in particular to a table tennis racket. Background Art
[0002] Traditional table tennis rackets usually use wood as the base, and glue sheets or other layered structures are adhered to the base to adjust the strength, elasticity and other properties of the table tennis racket.
[0003] When the existing table tennis racket is in use, the adhesive rubber sheet or other layered structure is easy to fall off, resulting in damage to the performance of the racket or even making it unusable, and there are defects such as complex structure and high production cost. Summary of the invention
[0004] One purpose of the present application is to provide a table tennis racket with a simple structure, low cost and good structural strength.
[0005] To achieve the above objectives, the technical solution adopted in the present application is: a table tennis racket, which includes a racket core, a unidirectional carbon fiber cloth, and a mesh carbon fiber cloth, wherein the unidirectional carbon fiber cloth is laid on the racket core, and the mesh carbon fiber cloth is laid on the unidirectional carbon fiber cloth.
[0006] Compared with the prior art, the beneficial effects of the present application are: the present application sequentially lays unidirectional carbon fiber cloth and mesh carbon fiber cloth outside the racket core. Compared with the prior art structure in which the racket is bonded layer by layer, the present application has a simpler structure and is easy to process and form. The present application does not require a rubber plate, the outer layer of carbon fiber cloth is not easy to fall off, and the carbon fiber cloth has high strength and modulus along the fiber axis direction, which can greatly improve the structural strength of the racket and ensure that the racket structure is stable and durable. In addition, the use of unidirectional carbon fiber cloth in the middle part can reduce a certain production cost compared with the situation of using only mesh carbon fiber cloth for multi-layer laying.
[0007] As a preferred embodiment, the racket core is a foam core, the unidirectional carbon fiber cloth is laid on the outer surface of the foam core, the mesh carbon fiber cloth is laid on the outer surface of the unidirectional carbon fiber cloth, and the unidirectional carbon fiber cloth and the mesh carbon fiber cloth are heated to form an integrated structure with the racket core. The foam core is light in weight and can provide the elasticity required by the racket. The unidirectional carbon fiber cloth and the mesh carbon fiber cloth are first laid on the foam core, and then heated to form an integrated structure with the racket core. The racket core and the unidirectional carbon fiber cloth, and the unidirectional carbon fiber cloth and the bidirectional carbon fiber cloth are tightly connected. The structural strength of the entire table tennis racket is good, and the carbon fiber cloth is not easy to fall off.
[0008] As a preference, the unidirectional carbon fiber cloth is provided in at least two layers.
[0009] As a preference, the laying directions of two adjacent layers of the unidirectional carbon fiber cloth are staggered to respectively improve the strength of the table tennis racket in different directions.
[0010] Preferably, the table tennis racket comprises a handle and a plate, with the connection direction of the handle and the plate as the axial direction, and the unidirectional carbon fiber cloth is laid on the racket core obliquely relative to the axial direction of the table tennis racket.
[0011] Preferably, the unidirectional carbon fiber cloth is inclined at an axial angle of not less than 30 degrees and not more than 60 degrees relative to the table tennis racket.
[0012] Preferably, the unidirectional carbon fiber cloth is laid on the core of the racket at an angle of 45 degrees relative to the axial direction of the table tennis racket.
[0013] Preferably, the table tennis racket comprises a handle and a paddle, with the connection direction of the handle and the paddle as the axial direction, and the grid carbon fiber cloth is laid on the racket core obliquely relative to the axial direction of the table tennis racket.
[0014] As a preference, the mesh carbon fiber cloth is provided as a layer.
[0015] Preferably, the racket core includes an integrally formed plate portion and a handle portion, the plate portion is wrapped with the unidirectional carbon fiber cloth and the mesh carbon fiber cloth to form a racket board of the table tennis racket, and the handle portion is wrapped with the unidirectional carbon fiber cloth and the mesh carbon fiber cloth to form a handle of the table tennis racket. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of a table tennis racket in one embodiment of the present application;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of a table tennis racket along the axis in one embodiment of the present application;
[0018] Figure 3 This is a schematic diagram of the structure when the first layer of unidirectional carbon fiber cloth is laid on the core of the racket in one embodiment of the present application;
[0019] Figure 4 This is a schematic diagram of the structure when the second layer of unidirectional carbon fiber cloth is laid on the core of the racket in one embodiment of the present application;
[0020] In the figure: 01, racket; 02, handle; 10, racket core; 11, board; 12, handle; 20, unidirectional carbon fiber cloth; 30, mesh carbon fiber cloth. DETAILED DESCRIPTION
[0021] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0022] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.
[0023] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.
[0024] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.
[0025] The present application provides a table tennis racket, such as Figure 1-Figure 4As shown, it includes a racket core 10, a unidirectional carbon fiber cloth 20, and a mesh carbon fiber cloth 30. The unidirectional carbon fiber cloth 20 is laid on the racket core 10, and the mesh carbon fiber cloth 30 is laid on the unidirectional carbon fiber cloth 20. In the present application, the side facing the racket core 10 is the inner side, and the side facing away from the racket core 10 is the outer side. By laying the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30 on the outside of the racket core 10 in sequence, the structural strength of the table tennis racket is increased, and compared with the layer-by-layer bonding structure in the prior art, such as a racket with templates, rubber, and carbon fibers stacked layer by layer, the present application does not need to adhere a rubber plate or other material interlayer, and the structure is simpler and easy to process and shape. Among them, carbon fiber is a material with the characteristics of high temperature resistance, friction resistance, heat conduction and corrosion resistance. Its appearance is fibrous, soft, and can be processed into various fabrics, such as carbon fiber cloth, which has high strength and modulus along the fiber axis. The unidirectional carbon fiber cloth 20 generally refers to a cloth woven with carbon fiber bundles in one direction, and fixed with a special high-strength hot-melt adhesive line in the other direction. The adhesive line can prevent the carbon fiber cloth from becoming loose and play a fixing role. The carbon fiber bundle can improve the strength of the table tennis racket in one direction. The mesh carbon fiber cloth 30, or the bidirectional carbon fiber cloth, contains carbon fibers in both the horizontal and vertical directions. It is woven in the warp and weft directions, can withstand pressure in two directions, and improve the strength of the racket in different directions. Its weaving process is more troublesome than the unidirectional carbon fiber cloth 20, and the cost of use is higher than that of the unidirectional carbon fiber cloth 20. The middle interlayer of the present application uses the unidirectional carbon fiber cloth 20, which can reduce a certain production cost compared to the situation of using only the mesh carbon fiber cloth 30 for multi-layer laying. It should be pointed out that the bidirectional carbon fiber cloth can form a variety of textures such as plain, twill, satin, etc. under different weaving methods. In this regard, the specific type of the bidirectional carbon fiber cloth is not limited in the present application.
[0026] In some embodiments, the racket core 10 is a foam core, the unidirectional carbon fiber cloth 20 is laid on the outer surface of the foam core, the mesh carbon fiber cloth 30 is laid on the outer surface of the unidirectional carbon fiber cloth 20, and the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30 are heated to form an integrated structure with the racket core 10. The foam core is light in weight, and replacing the traditional wooden bottom plate with the foam core can reduce the total weight of the table tennis racket and provide the elasticity required for the racket to serve and receive the ball. In addition, the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30 are heated to form an integrated structure with the racket core 10, that is, the racket core 10, the unidirectional carbon fiber cloth 20, and the bidirectional carbon fiber cloth are tightly connected, the structural strength of the entire table tennis racket is good, the structure is stable, the carbon fiber cloth is not easy to fall off, and the racket is more durable. Among them, the foam core can be foamed and molded by a foaming agent made of polyurethane, polyethylene, polystyrene, glass fiber, etc.
[0027] In some embodiments, the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30 are cut before or after being laid on the core 10 , so that the shape and size of the carbon fiber cloth are adapted to the core 10 .
[0028] In some embodiments, the racket core 10 includes a plate portion 11 and a handle portion 12. The plate portion 11 is wrapped with the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30 to form a table tennis racket plate 01, and the handle portion 12 is wrapped with the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30 to form a table tennis racket handle 02. The wrapping method facilitates the rapid and reliable laying of the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30.
[0029] In some embodiments, the plate portion 11 and the handle portion 12 are integrally formed. Specifically, they may be integrally injection molded using a foaming agent to increase the connection strength between the plate portion 11 and the handle portion 12 .
[0030] The plate portion 11 is a substantially elliptical plate-shaped structure, the handle portion 12 is substantially cylindrical, and the core 10 determines the basic shape of the table tennis racket. In other words, the racket plate 01 is a plate-shaped structure with an elliptical cross section, and the handle 02 is substantially cylindrical for easy gripping.
[0031] In some embodiments, the unidirectional carbon fiber cloth 20 is provided in at least two layers. Compared with a single layer of unidirectional carbon fiber cloth 20, providing two or more layers of unidirectional carbon fiber cloth 20 can provide greater strength in a certain direction, or the laying directions of two adjacent layers of unidirectional carbon fiber cloth 20 are staggered to respectively improve the strength of the table tennis racket in different directions.
[0032] In some embodiments, the mesh carbon fiber cloth 30 is provided as a layer. The mesh carbon fiber cloth 30 is more expensive than the unidirectional carbon fiber cloth 20, so the present application only covers the outermost layer with a layer of mesh carbon fiber cloth 30, and the middle part is filled with the unidirectional carbon fiber cloth 20, so as to achieve the purpose of increasing the structural strength of the table tennis racket while controlling the production cost.
[0033] More specifically, in the present application, the carbon fiber cloth can be woven from 12K carbon fiber yarn, the thickness of a single layer is 0.111 mm or 0.167 mm, and the total thickness of the unidirectional carbon fiber cloth 20 and the mesh carbon fiber cloth 30 is not less than 0.2 mm and not more than 1.0 mm. The carbon fiber cloth has the characteristics of being light and thin while improving the strength and not affecting the basic shape of the table tennis racket.
[0034] In some embodiments, the table tennis racket has a handle 02 and a paddle 01, with the connection direction of the handle 02 and the paddle 01 as the axial direction. Figure 1The dotted line L indicates the axial direction. Since the handle 02 of the table tennis racket is narrower and thicker than the plate 01, laying the unidirectional carbon fiber cloth 20 along the axial direction may cause the unidirectional carbon fiber cloth 20 to be difficult to fit the surface of the racket core 10 and the carbon fiber cloth may be easily pulled off. Therefore, the unidirectional carbon fiber cloth 20 is laid on the racket core 10 at an angle relative to the axial direction of the table tennis racket. Similarly, in some embodiments, the mesh carbon fiber cloth 30 is laid on the racket core 10 at an angle relative to the axial direction of the table tennis racket.
[0035] In some embodiments, the unidirectional carbon fiber cloth 20 is tilted at an angle of not less than 30 degrees and not more than 60 degrees relative to the axial direction of the table tennis racket. It can be understood that when the carbon fiber cloth is tilted at a small angle, it is approximately laid along the axial direction, and when the carbon fiber cloth is tilted at a large angle, it is approximately laid in a direction perpendicular to the axial direction, and the problem of the carbon fiber cloth being easily pulled off still exists.
[0036] In a specific embodiment, the unidirectional carbon fiber cloth 20 is laid on the core 10 at an angle of 45 degrees relative to the axial direction of the table tennis racket.
[0037] In a specific embodiment, a table tennis racket includes a foam core, four layers of unidirectional carbon fiber cloth 20, and a layer of mesh carbon fiber cloth 30. The four layers of unidirectional carbon fiber cloth 20 are stacked and laid on the foam core, and the layer of mesh carbon fiber cloth 30 is laid on the outer side of the outermost layer of unidirectional carbon fiber cloth 20. The manufacturing steps of the table tennis racket are as follows:
[0038] S1, processing to obtain a foam core;
[0039] S2, laying a first layer of unidirectional carbon fiber cloth 20, wherein the angle between the first layer of unidirectional carbon fiber cloth 20 and the axial direction of the table tennis racket is 45 degrees, or approximately 45 degrees;
[0040] S3, laying a second layer of unidirectional carbon fiber cloth 20, when laying, the angle between the second layer of unidirectional carbon fiber cloth 20 and the axial direction of the table tennis racket is 45 degrees, or approximately 45 degrees, and intersects with the laying direction of the first layer of unidirectional carbon fiber cloth 20;
[0041] S4, laying a third layer of unidirectional carbon fiber cloth 20, wherein the laying direction intersects with the laying direction of the second layer of unidirectional carbon fiber cloth 20;
[0042] S5, laying a fourth layer of unidirectional carbon fiber cloth 20, wherein the laying direction intersects with the laying direction of the third layer of unidirectional carbon fiber cloth 20;
[0043] S6, laying the grid carbon fiber cloth 30, with the angle between the laying direction and the axial direction of the table tennis racket being 45 degrees, or approximately 45 degrees, to obtain a preform;
[0044] S7, providing a mold with heating and cooling functions, placing the preform in the mold, heating to form the carbon fiber cloth and the foam core into one piece, and obtaining a formed table tennis racket;
[0045] S8, the mold is cooled, and the mold is opened to take out the table tennis racket. The manufacturing method is simple and the processing and manufacturing cost is low.
[0046] More specifically, in step S7, the mold can be heated to not less than 110°C and not more than 200°C, and the table tennis racket can be solidified and formed by waiting for ten minutes under this heating condition. Then, step S8 is performed to cool the mold. It is estimated that the mold can be cooled to 50°C to 60°C after waiting for ten minutes. At this time, the mold can be opened and the part can be taken out. The residual heat of the mold can be used to heat the next preform to save production costs.
[0047] Furthermore, in order to avoid bubble defects in the table tennis racket, the mold is provided with an exhaust system to process the preform under vacuum or near-vacuum conditions.
[0048] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.
Claims
1. A table tennis racket, characterized in that: The racket comprises a core, a unidirectional carbon fiber cloth and a mesh carbon fiber cloth. The core is a foam core. The unidirectional carbon fiber cloth is laid on the outer surface of the foam core. The mesh carbon fiber cloth is laid on the outer surface of the unidirectional carbon fiber cloth. The unidirectional carbon fiber cloth and the mesh carbon fiber cloth form an integrated structure with the core after being heated.
2. The table tennis racket according to claim 1, characterized in that: The unidirectional carbon fiber cloth is provided in at least two layers.
3. The table tennis racket according to claim 2, characterized in that: The laying directions of two adjacent layers of the unidirectional carbon fiber cloth are staggered to respectively improve the strength of the table tennis racket in different directions.
4. A table tennis racket as claimed in any one of claims 1 to 3, characterized in that: The table tennis racket comprises a handle and a paddle, with the connection direction of the handle and the paddle as the axial direction, and the unidirectional carbon fiber cloth is laid on the racket core in an inclined manner relative to the axial direction of the table tennis racket.
5. The table tennis racket according to claim 4, characterized in that: The unidirectional carbon fiber cloth is inclined at an axial angle of not less than 30 degrees and not more than 60 degrees relative to the table tennis racket.
6. The table tennis racket according to claim 5, characterized in that: The unidirectional carbon fiber cloth is laid on the racket core at an angle of 45 degrees relative to the axial direction of the table tennis racket.
7. A table tennis racket as claimed in any one of claims 1 to 3, characterized in that: The table tennis racket comprises a handle and a paddle, with the connection direction of the handle and the paddle as the axial direction, and the grid carbon fiber cloth is laid on the racket core in an inclined manner relative to the axial direction of the table tennis racket.
8. The table tennis racket according to claim 1, characterized in that: The mesh carbon fiber cloth is provided as a layer.
9. The table tennis racket according to claim 1, characterized in that: The racket core includes an integrally formed plate portion and a handle portion, wherein the plate portion is wrapped with the unidirectional carbon fiber cloth and the mesh carbon fiber cloth to form a racket board of the table tennis racket, and the handle portion is wrapped with the unidirectional carbon fiber cloth and the mesh carbon fiber cloth to form a handle of the table tennis racket.