Plate racket with ribs having a concave profile

Abstract

The utility model provides a kind of plate type racket with inner recess structure of rib part, it includes a rib part, the rib part has an extension direction, defines a pair of end face and at least one side, the pair of end face is spaced apart along the extension direction, and the at least one side is provided with an inner recess structure corresponding to the extension direction, and extends along the extension direction.The inner recess structure defines a pair of edge and an inner recess area.The inner recess structure helps the rib part, and controlled flexural deformation is generated when stressed, which is beneficial to improve energy feedback, increase holding ball time, improve vibration absorption and improve control effect such as hitting effect.

Description

Technical Field

[0001] This utility model relates to the field of sports equipment, and more particularly to a paddle racket for sports such as pickleball, padel, and squash. More specifically, this utility model relates to a paddle racket with a concave structure in the ribs. The concave structure is designed to improve energy return, increase ball hold time, improve vibration absorption, and enhance control during shots. Background Technology

[0002] Modern paddle rackets typically consist of a frame, a core housed within the frame, a handle attached to the frame, and upper and lower facets positioned on opposite sides of the core. The core can employ a honeycomb or straight-rib structure, with the straight ribs mostly made of polymer, aluminum, or carbon fiber, and arranged longitudinally, laterally, or diagonally depending on the requirements.

[0003] The existing core possesses a certain level of strength and durability, which can basically meet the needs of hitting the ball. However, when faced with hitting situations with different forces and speeds, its response is relatively unchanging. In particular, there are still obvious deficiencies in energy return, ball hold time, vibration absorption, and control.

[0004] For example, the honeycomb structure produces almost no compressive deformation upon ball impact, resulting in a brief contact time between the ball and the racket face, making it difficult for players to apply spin and control the ball's trajectory. Furthermore, during the manufacturing process of the honeycomb structure, gaps are created at the exposed core edges after cutting, which not only easily cause damage but also cannot be effectively smoothed, thus affecting the performance of the shot.

[0005] On the other hand, straight-rib structures using carbon fiber as the core material (such as those disclosed in U.S. Patent No. 10,377,093) offer a better elasticity and strength-to-weight ratio compared to honeycomb structures because they allow for precise control of the carbon fiber orientation and rigidity configuration. However, straight-rib structures primarily withstand impact through axial compression, rather than storing and releasing energy through elastic deformation like a spring, and therefore cannot effectively extend the time spent holding the ball.

[0006] These limitations result in existing rackets being sluggish in response to gentle shots or low-speed swings, making it difficult for users to precisely control the ball's trajectory. Overall, there is still a lack of rackets that can simultaneously provide high energy return, good ball hold time, effective vibration absorption, and excellent control.

[0007] In view of this, the designer of this case actively devoted himself to research and development, and finally completed the present invention of a plate racket with a concave structure in the ribs. Utility Model Content

[0008] The purpose of this invention is to provide a plate racket with a concave structure in the ribs, in order to solve the difficulties mentioned in the prior art.

[0009] This utility model provides a plate racket with a concave structure in the rib, including a rib having an extending direction, the rib defining a pair of end faces and at least one side face, the pair of end faces being spaced apart along the extending direction, and the at least one side face having a concave structure corresponding to the extending direction, the concave structure extending along the extending direction, the concave structure defining a pair of edges, and the pair of edges defining a concave region.

[0010] In a racket with a concave structure in the ribs, the pair of edges do not intersect each other along the extending direction.

[0011] In a racket with a concave structure in the ribs, the pair of edges change from not intersecting to intersecting along the extending direction, and form an angle at the intersection, which can be a rounded angle, an arc angle, a right angle, an acute angle, or an obtuse angle.

[0012] In a racket with a concave structure in the ribs, the pair of edges change from intersecting to non-intersecting along the extension direction, and form an angle at the intersection, which can be a rounded angle, an arc angle, a right angle, an acute angle, or an obtuse angle.

[0013] In a racket with a concave structure in the rib area, the concave area has a first direction that intersects with the extension direction, and the first cross-sectional profile of the concave area in the first direction changes from shallow to deep from the outside to the inside.

[0014] In a racket with a concave structure in the rib area, the concave area has a second direction that intersects both the extension direction and the first direction. The second cross-sectional profile of the concave area in the second direction has a consistent depth from the outside to the inside or a depth that gradually increases from shallow to deep.

[0015] The racket with a concave structure in the ribs further includes a frame, a handle, a core, and at least one racket face. The handle is connected to the frame, the core is supported inside the frame, the core includes a plurality of the ribs, and the at least one racket face is disposed on one side of the core.

[0016] In a racket with a concave structure in the ribs, the concave structure is provided on at least one side surface of each of any two adjacent or connected ribs.

[0017] In a racket with a concave structure in the rib, the concave structure is provided on at least one side surface of the rib that is adjacent to or connected to the at least one racket face.

[0018] In a racket with a concave rib structure, the rib is a composite fiber structure, which is one of carbon fiber, glass fiber, boron fiber, or aramid fiber. The rib has a first space, which is provided with a first foam structure, which is an ethylene / vinyl acetate copolymer or closed-cell polyurethane. The pair of edges of the rib and the concave region together define a second space, which is provided with a second foam structure, which is an intumescent polyurethane.

[0019] This invention provides a racket with a concave structure in the rib section. This concave structure helps the rib section to produce controlled flexural deformation when subjected to force, which is beneficial for improving energy return, increasing ball holding time, improving vibration absorption, and enhancing controllability in ball striking.

[0020] The above description is only used to illustrate the problem that this utility model intends to solve, the technical means to solve the problem, and the effects it produces. The specific details of this utility model will be described in detail in the following embodiments and related drawings. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the concave structure of the ribs of this utility model.

[0022] Figure 2A This utility model Figure 1 A planar sectional view of an embodiment in a first direction.

[0023] Figure 2B This utility model Figure 1 A planar sectional view of another embodiment in the first direction.

[0024] Figure 2C This utility model Figure 1 A plan sectional view of another embodiment in the first direction.

[0025] Figure 3A This is a schematic diagram showing that the two edges of this utility model do not intersect.

[0026] Figure 3B This is a schematic diagram showing how the two edges of this utility model change from non-intersecting to intersecting.

[0027] Figure 3C This is a schematic diagram showing how the two edges of this utility model intersect and then become non-intersecting.

[0028] Figure 4A This is a schematic diagram of the intersection angle of this utility model being rounded.

[0029] Figure 4B This is a schematic diagram of the intersection angle of this utility model being an arc angle.

[0030] Figure 4C This is a schematic diagram of the present invention where the angle between the two points is a right angle.

[0031] Figure 4D This is a schematic diagram of the intersection angle of this utility model being an acute angle.

[0032] Figure 4E This is a schematic diagram of the present invention with an obtuse angle.

[0033] Figure 5A This utility model Figure 3A A planar sectional view in the second direction.

[0034] Figure 5B This utility model Figure 3B A planar sectional view in the second direction.

[0035] Figure 6 This is a schematic diagram of the assembly of the plate racket with a concave structure in the rib section of this utility model.

[0036] Figure 7 This is an exploded view of the plate racket with a concave structure in the rib section according to the present invention.

[0037] Figure 8 This is a schematic diagram showing the concave structure of this utility model disposed on the side surfaces of any two adjacent or connected ribs.

[0038] Figure 9 This is a schematic diagram showing the concave structure of this utility model disposed on the side of a rib adjacent to or connected to at least one striking surface.

[0039] Explanation of reference numerals in the attached figures: 10-rib; 10a-rib; 10b-rib; 10c-rib; 10L-central position; 10S-first space; 10F-first foam structure; 12-end face; 14-end face; 16-side; 16a-side; 16b-side; 16c-side; 20-concave structure; 22-edge; 24-edge; 26-concave area; 26S-second space; 26F-second foam structure; 100-plate racket; 110-frame; 120-handle; 130-core; 140-racket face; D-extension direction; F1-first direction; F2-second direction; P-section profile; P1-first section profile; P2-second section profile; α-angle. Detailed Implementation

[0040] To provide a better understanding of this utility model, preferred embodiments are described in detail below with reference to the accompanying drawings:

[0041] Please refer to Figures 1 to 9As shown, this utility model provides a racket with a concave structure in its rib, comprising a rib 10 having an extending direction D, the rib 10 defining a pair of end faces 12, 14 and at least one side face 16. The pair of end faces 12, 14 are spaced apart along the extending direction D, and the at least one side face 16 has a concave structure 20 corresponding to the extending direction, the concave structure 20 extending along the extending direction D. The concave structure 20 defines a pair of edges 22, 24, and a concave region 26 is defined between the pair of edges 22, 24.

[0042] In one embodiment, the rib 10 may be a hollow cylinder (see reference). Figure 1 (as shown) or a solid prism, and includes the pair of end faces 12, 14 and four side faces 16 connecting the pair of end faces 12, 14. These side faces 16 may be arranged in a generally perpendicular direction relative to the pair of end faces 12, 14, forming a quadrangular prism with an approximately square or rectangular cross-sectional profile.

[0043] In another embodiment, the rib 10 may be a cylinder and include the pair of end faces 12, 14 and a continuous side face 16, which is also provided with the concave structure 20.

[0044] The concave structure 20 can be configured in various ways along the extension direction D. The concave structure 20 can be continuously extended, forming an uninterrupted structural distribution along the entire extension direction D of the rib 10; it can also be intermittently extended, forming a spaced-out intermittent structural distribution along the entire extension direction D of the rib 10; it can also be partially extended, with the concave structure 20 distributed only at a certain part of the rib 10 (e.g., the central part or the edge part); or it can be alternately extended on different sides 16 of the rib 10 (e.g., staggered on opposite sides or non-opposite sides); or a combination of the above extension methods can be used to adjust the distribution position according to actual application requirements. Furthermore, the concave structure 20 can also present different arrangement patterns, such as parallel arrangement or staggered arrangement. These extension and arrangement methods provide flexible configuration, helping to adapt to different usage conditions, mechanical requirements, and manufacturing limitations.

[0045] Compared to traditional straight rib structures, the concave structure 20 allows the rib 10 to undergo bending deformation upon impact, rather than relying solely on axial compression to withstand the impact. This concave structure allows the rib 10 to store and release energy through bending deformation, much like a leaf spring or a bending beam. This bending deformation mechanism enables the rib 10 to bend along the entire concave structure 20, rather than only undergoing localized compression, thereby increasing the deformation area and amount, achieving efficient energy storage and release. Upon impact, the concave structure 20 first receives energy and converts it into bending energy, and then, during the withdrawal phase, feeds this energy back to the sphere in a controlled manner.

[0046] The rib 10 achieves the following technical effects through the aforementioned flexure deformation mechanism. First, it helps improve energy return, achieving efficient energy transfer and flexure performance. Second, this mechanism extends dwell time, increasing the contact time between the ball and the racket face, thereby improving shot stability. Furthermore, this invention improves vibration absorption, effectively reducing the impact of vibration on the user's feel. Finally, this design also enhances control, improving the user's operational precision and ball control ability.

[0047] The rib section 10 is a composite fiber structure, comprising one or a combination of carbon fiber, glass fiber, boron fiber, and aramid fiber. This composite fiber structure can be arranged with different fiber orientations to suit various needs, such as 0°, 10°, 19°, 30°, ±45°, or 90° stacking directions, to adjust bending and torsion. Different fiber orientation combinations are used to optimize the overall performance of the racket.

[0048] In one embodiment, the rib 10 has a first space 10S (see reference). Figure 1 As shown), the first space 10S can be continuously or intermittently configured, and can also be a closed space inside (e.g., a sealed cavity) or an open space connecting the inside to the outside (e.g., a groove or a through hole), so as to Figure 1As shown, the first space 10S is a channel connecting the inside to the outside via the pair of end faces 12 and 14. The first space 10S can be hollow or have a first foamed structure 10F (see reference). Figure 8 As shown), the first foam structure 10F can completely or partially fill the first space 10S. The first foam structure 10F can contain ethylene-vinyl acetate copolymer (EVA) or closed-cell polyurethane to provide effective vibration absorption and structural damping performance.

[0049] In another embodiment, the pair of edges 22, 24 of the rib 10 and the concave region 26 together define a second space 26S (see reference). Figure 1 As shown), the second space 26S is provided with a second foaming structure 26F (please refer to...). Figure 8 As shown), the second foam structure 26F can completely or partially fill the second space 26S. The second foam structure 26F may contain expanding polyurethane. The second foam structure 26F can expand during the molding process to help maintain the concave shape and provide lateral support.

[0050] Please refer to Figure 3A As shown, in one embodiment, the pair of edges 22, 24 of the concave structure 20 do not intersect each other along the extending direction D.

[0051] Please refer to Figure 3B As shown, in another embodiment, the pair of edges 22, 24 change from non-intersecting to intersecting along the extending direction D, and form an angle α at the intersection (see reference). Figures 4A-4E (As shown). The angle α can be... Figure 4A rounded corners Figure 4B arc angle, Figure 4C right angle, Figure 4D acute angle or Figure 4E The obtuse angles are used to accommodate different structural requirements and performance characteristics. For example, the concave structures 20 do not intersect at the central part, but intersect at the edge part.

[0052] Please refer to Figure 3C As shown, in another embodiment, the pair of edges 22 and 24 change from intersecting to non-intersecting along the extending direction D, and the intersection angle α is formed at the intersection (see reference). Figures 4A-4E (As shown). This configuration provides yet another method of deformation control. For example, the concave structures 20 intersect at the central portion but do not intersect at the edges.

[0053] In this utility model specification, the term "intersection angle α" refers to the angular relationship formed by two structural parts at their intersection or connection. The intersection angle α can include the following forms: (1) Basic state: refers to the angle formed when two straight lines, a straight line and a plane, or two planes intersect, which can be acute, right, or obtuse; (2) Intersection state: refers to the angle formed at the intersection point by tangents or tangent planes when curves intersect, curves and straight lines, or curved surfaces intersect; (3) Circular arc state: refers to the angle formed when two parts are connected by a circular arc or curve, usually expressed by the radius of the arc or the radius of curvature; (4) Variable state: the area where the intersection angle α is located may change due to external forces, structural deformation, or material elasticity during use, in order to achieve the functions of shock absorption, flexible deformation, or adjustment of rigidity. In addition, the intersection angle α may also present a composite form (such as a combination of right angle and rounded corner), an irregular shape, or an angle that changes due to material deformation during use. The various angle α designs mentioned above can be selected and adjusted based on structural performance requirements, material properties, and manufacturing processes.

[0054] Different edge construction variations can produce the following differentiated technical effects: (1) Non-intersecting edge constructions provide uniform and consistent flexural deformation, which helps to stabilize control and maintain feel; (2) The transition from non-intersecting to intersecting edge constructions gives the concave structure 20 relatively high structural rigidity in the central part, while the edge part maintains relatively large flexural performance, which helps to improve hitting stability and also takes into account hitting tolerance, avoiding excessive energy loss or directional deviation; (3) The transition from intersecting to non-intersecting edge constructions provides a larger strain space in the central part and higher rigidity support in the edge part, which helps to improve hitting feedback and outer edge protection. The above constructions can be selected and configured according to actual application requirements.

[0055] The concave structure 20 is formed by recessing into the rib 10, where the inner side refers to a central portion on a cross section intersecting the extending direction D of the rib 10. In one embodiment, this central portion can be referred to as a central position 10L marked in the drawing (please refer to...). Figure 2A , Figure 2B , Figure 2C As shown, the point representing the geometric center causes at least one side 16 of the rib 10 to be recessed toward the central portion, forming the contour of the concave structure 20. This contour can present different cross-sectional contours P on different sections to adapt to the force requirements from different directions.

[0056] like Figure 1As shown, the concave region 26 has a first direction F1, which intersects the extending direction D. The first cross-sectional profile P1 of the concave region 26 along the first direction F1 exhibits a gradually deepening shape from the outside in (from the inside out, from the outside in, from the inside out), as shown... Figure 2A The shallower depth, Figure 2B At a deeper depth, Figure 2C Edges 22 and 24 are recessed. This design allows the rib 10 to produce a progressive flexural response when subjected to impacts of varying intensities, providing shock absorption and cushioning.

[0057] like Figure 1 As shown, the concave region 26 also has a second direction F2, which intersects both the extending direction D and the first direction F1. The second cross-sectional profile P2 of the concave region 26 along the second direction F2 exhibits a consistent depth from the outside in and is generally flat. Figure 5A As shown, it may also present a gradually deepening concave shape from the outside in, as if... Figure 5B As shown, this allows the rib 10 to produce a full-range flexural response in three-dimensional space, which helps to enhance overall stability and control performance.

[0058] It should be noted that the above description of the depth variation of the concave structure 20 (e.g., consistent depth, from shallow to deep) is merely illustrative, and the scope of protection of this utility model is not limited thereto. The concave structure 20 can present a variety of possible depth variation patterns in various directions (e.g., the first direction F1 and / or the second direction F2) according to different design requirements, including but not limited to: consistent depth, from shallow to deep, from deep to shallow, or combinations thereof.

[0059] The first cross-sectional profile P1 and the second cross-sectional profile P2 may have different recess depths (e.g., consistent depth or gradual change from shallow to deep) and cross-sectional shapes (e.g., planar or curved), and their profiles may also be symmetrical or asymmetrical. This design allows the rib 10 to exhibit different degrees of flexural deformation capabilities in the first direction F1 and the second direction F2, thereby producing flexural deformation behaviors in different directions to adapt to complex hitting requirements.

[0060] The cross-sectional profiles P1 and P2 provide the following technical effects: (1) The progressive concave shape allows the rib 10 to produce a corresponding flexural response according to the hitting force, providing good control feel when hitting lightly and providing high energy feedback when hitting heavily; (2) The first cross-sectional profile P1 on the first direction F1 provides good energy storage efficiency when hitting with medium force; (3) The second cross-sectional profile P2 on the second direction F2 helps to improve the consistency of flexural response when hitting at multiple angles, reduce the control deviation caused by different hitting angles, and help to improve the overall hitting stability and accuracy.

[0061] like Figure 6 and Figure 7 As shown, a racket 100 includes a frame 110, a handle 120, a core 130, and at least one racket face 140. The handle 120 is connected to the frame 110, the core 130 is supported inside the frame 110, and the at least one racket face 140 is disposed on one or both sides of the core 130. The core 130 includes a plurality of ribs 10, each of which has a concave structure 20.

[0062] The at least one striking surface 140 can be set on one side of the core 130 (in which case the number of striking surfaces is 1) or on both sides (e.g. Figure 7 As shown, the number of racket faces is 2 at this time, to provide single-sided or double-sided shots. The multiple ribs 10 inside the core 130 can be arranged parallel to each other, staggered, or radially. Different arrangements can adjust the stress path and energy transfer direction according to mechanical requirements, and the spacing and density of the ribs 10 can also be adjusted according to process requirements. Furthermore, the ribs 10 and the at least one racket face 140 can be joined by mechanical connection, chemical bonding, or integral molding. Mechanical connection can include snap-fit, threaded, or press-fit structures; chemical bonding can include resin bonding, hot melt bonding, or composite cross-linking; integral molding can include co-injection molding, co-extrusion, or prepreg compression molding. Each joining method can be flexibly selected or combined according to material compatibility, structural strength, and process conditions.

[0063] In one embodiment, such as Figure 8 As shown, the concave structure 20 is disposed on the side surfaces 16a and 16b of any two adjacent or connected ribs 10a and 10b. This configuration forms a cluster of concave structures 20, further enhancing the overall flexural response of the racket 100 upon impact.

[0064] In another embodiment, such as Figure 9 As shown, the concave structure 20 is disposed on the side surface 16c of the rib 10c adjacent to or connected to the at least one striking surface 140. This configuration allows the contact area between the at least one striking surface 140 and the core 130 to have a flexural response.

[0065] The overall technical effects of the racket 100 are as follows: (1) The core 130 formed by integrating multiple ribs 10 with the concave structure 20 is lighter than the traditional honeycomb structure core, while providing a higher strength-to-weight ratio, which helps to improve controllability and reduce the burden on the user; (2) The concave structures 20 of the adjacent ribs 10 work together to create a clustered flexural response, which makes the energy feedback of the racket 100 uniform in each area and expands the effective hitting area (sweet spot); (3) The concave structure 20 set near at least one racket face 140 is particularly effective in buffering the impact of hitting the ball, reducing vibration transmission, and maintaining good energy transfer efficiency.

[0066] The rib 10 and its concave structure 20 of this invention can be manufactured by various methods. In one embodiment, the rib 10 and its concave structure 20 of this invention can be manufactured by a pre-molding method. In this embodiment, the composite fiber material is first pre-molded into the rib 10 having the concave structure 20, and then multiple ribs 10 are assembled into the core 130 according to a predetermined arrangement to provide the required structural strength and internal elastic configuration.

[0067] In another embodiment, a one-step molding method can be used for manufacturing. This method involves placing a straight preform into a mold and filling it with expanding foam material. Under foaming pressure, the preform deforms into the shape with the concave structure 20, while simultaneously undergoing a curing process to form the rib 10 and complete the structural forming of the core 130.

[0068] In another embodiment, the rib 10 is manufactured using a hybrid molding method. This method includes: first, partially curing the material constituting the rib 10, then placing it in a pressurized mold, applying external pressure and internal foaming pressure during the expansion of the foamed material, deforming it into the shape with the concave structure 20, and finally completing the structural forming of the rib 10 and its overall integration with the core 130.

[0069] The different manufacturing methods have their own technical advantages: (1) The pre-forming method can precisely control the concave shape and size, ensuring the consistency and stability of the flexural performance of the rib 10; (2) The one-step molding method can simplify the manufacturing process, reduce production time and cost, and naturally form a concave shape through the uniform pressure generated by the expanded foam material; (3) The composite molding method combines the advantages of the first two methods, and is particularly suitable for mass production, improving production efficiency and shortening the manufacturing cycle while maintaining stable quality.

[0070] In summary, the location of the concave structure 20 is not limited to the specific scenarios described above. The concave structure 20 can be disposed on at least one side 16 of the rib 10, regardless of whether the at least one side 16 is adjacent to or connected to other ribs 10, at least one racket face 140, or frame 110. The concave structure 20 can also be disposed on multiple at least one side 16, multiple ribs 10, or ribs 10 in different regions. Furthermore, depending on the different usage requirements, performance characteristics, or manufacturing considerations of the racket 100, the concave structures 20 with different distribution densities, depths, or shapes can be arranged and combined on the rib 10 to achieve specific technical effects.

[0071] Furthermore, the concave structure 20 can also deform to different degrees during use according to the stress state, forming a concave profile that changes over time. The design of the concave structure 20 can also be combined with the material properties of the composite fiber structure, the first foam structure 10F and the second foam structure 26F to adjust the flexural response and performance. It can also be formed through different manufacturing processes, including but not limited to preforming, one-step molding or composite molding.

[0072] This invention provides a racket with a concave structure in the rib section. This concave structure 20 of the rib section 10 provides a superior flexural response compared to traditional straight rib or honeycomb structures, particularly in terms of significant improvements in energy return, ball hold time, vibration absorption, and control. It offers better control at low speeds and higher energy return at high speeds, while suppressing unnecessary vibration transmission and reducing player fatigue caused by impact during shots.

[0073] Compared with traditional straight rib structures or honeycomb structures, the concave structure 20 of the rib 10 of this utility model has the following technical advantages:

[0074] First, the rib 10 adopts a high strength-to-weight ratio design. The composite fiber structure includes one or a combination of materials such as carbon fiber, glass fiber, boron fiber and aramid fiber. With the concave design, the rib 10 stores and releases energy like a leaf spring or a bending beam, overcoming the limitations of the traditional honeycomb structure with its extremely small compression and the traditional straight rib structure that relies only on axial compression. It is particularly suitable for the racket 100, which requires lightweight and high strength.

[0075] Secondly, by filling the first space 10S with the first foam structure 10F (e.g., ethylene / vinyl acetate copolymer or closed-cell polyurethane) and the second space 26S with the second foam structure 26F (e.g., expanded polyurethane), the problem that traditional honeycomb structures hardly produce compressive deformation when a ball is impacted is effectively improved, providing excellent damping effect and reducing vibration transmission and noise generation during use.

[0076] Furthermore, through various edge structure variations (e.g., non-intersecting, changing from non-intersecting to intersecting, changing from intersecting to non-intersecting), and presenting different contours (the first cross-sectional contour P1, the second cross-sectional contour P2) in different directions (the first direction F1, the second direction F2), the rib spacing, rib thickness, racket face thickness, and the type and density of foam material can be adjusted to achieve customization of weight distribution and functional characteristics in different areas (e.g., the central part and the edge part) of the racket 100, solving the problem of slow response of traditional straight rib structure when swinging at low speed;

[0077] In terms of manufacturing, by combining manufacturing processes such as preforming, one-step molding and composite molding, the disadvantages of traditional honeycomb structures being exposed at the core edge and creating gaps during cutting are avoided, providing a simple and feasible manufacturing method that can efficiently produce this plate racket 100 with complex structure.

[0078] Furthermore, the racket 100 formed by the rib 10 having the concave structure 20, including the concave structure 20 between adjacent ribs 10 and between the rib 10 and the at least one racket face 140, provides better edge protection and has higher impact resistance. This solves the technical problems of traditional honeycomb structures where the core edge is easily damaged and the edge treatment is uneven, thus enhancing the overall durability and practicality of the racket 100.

[0079] In this invention, terms such as "first" and "second" are used merely for the convenience of distinguishing components, features, or steps, and do not necessarily imply any specific temporal order, spatial arrangement, relative importance, or quantitative limitation. Unless the context clearly indicates otherwise, these terms should not be construed as limiting the scope of this invention.

[0080] Finally, the embodiments disclosed above are not intended to limit the present invention. Any person skilled in the art should be able to make various modifications and refinements without departing from the spirit and scope of the present invention, and all such modifications and refinements shall be protected under the present invention.

Claims

1. A racket with a concave rib structure, characterized in that, Include: A rib having an extending direction, the rib defining a pair of end faces and at least one side face, the pair of end faces being spaced apart along the extending direction, and at least one side face having a concave structure corresponding to the extending direction, the concave structure extending along the extending direction, the concave structure defining a pair of edges, and the pair of edges defining a concave region.

2. The racket with a concave rib structure as described in claim 1, characterized in that, The two edges do not intersect each other along the direction of extension.

3. The racket with a concave rib structure as described in claim 1, characterized in that, The pair of edges change from non-intersecting to intersecting along the extension direction, and form an angle at the intersection, which can be a rounded corner, an arc angle, a right angle, an acute angle, or an obtuse angle.

4. The racket with a concave rib structure as described in claim 1, characterized in that, The pair of edges change from intersecting to non-intersecting along the extension direction, and form an angle at the intersection, which can be a rounded corner, an arc angle, a right angle, an acute angle, or an obtuse angle.

5. The racket with a concave rib structure as described in claim 1, characterized in that, The concave region has a first direction that intersects with the extending direction, and the first cross-sectional profile of the concave region in the first direction gradually deepens from the outside to the inside.

6. The racket with a concave rib structure as described in claim 5, characterized in that, The concave region has a second direction that intersects both the extension direction and the first direction. The second cross-sectional profile of the concave region in the second direction has a consistent depth from the outside to the inside or gradually deepens.

7. The racket with a concave rib structure as described in claim 1, characterized in that, Also includes: A framework; A handle is attached to the frame; A core, supporting the framework, comprising multiple ribs; and At least one facet is set on one side of the core.

8. The racket with a concave rib structure as described in claim 7, characterized in that, The concave structure is provided on at least one side surface of each of any two adjacent or connected ribs.

9. The plate racket with a concave rib structure as described in claim 7, characterized in that, The concave structure is provided on at least one side surface of the rib that is adjacent to or connected to the at least one striking surface.

10. The racket with a concave rib structure as described in claim 1, characterized in that, The rib has a composite fiber structure, which is one of carbon fiber, glass fiber, boron fiber, and aramid fiber. The rib has a first space, which has a first foam structure, which is an ethylene / vinyl acetate copolymer or closed-cell polyurethane. The pair of edges of the rib and the concave area together define a second space, which has a second foam structure, which is an intumescent polyurethane.

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