Detachable racket frame

Abstract

The application relates to the field of sports equipment, and provides a detachable racket frame which comprises at least two unit elements, adjacent unit elements, one unit element has a convex part, and the other unit element has a concave part, the concave part is matched with the convex part, the two adjacent unit elements are modularly connected, the racket frame is separated into independent unit elements, or all the unit elements are combined to form a ring-shaped racket frame; the unit element is provided with a threading hole, the threading hole is used for threading a string to form a net of the racket, and the racket frame assembled by all the unit elements is stable. The application can improve the situation that the racket frame can only be abandoned after being damaged and broken, and can improve the use flexibility of the existing racket frame.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sports equipment, in particular to a detachable racket frame. BACKGROUND

[0002] The racket frame is the core component of badminton racket, tennis racket, squash racket and other rackets with a net surface, which determines the performance of the racket and directly affects the power, control, feel, stability and aerodynamic performance.

[0003] The current market rackets are mostly of one-piece structure, only with a line hole on the side for the line to pass through. Although the thickness of the racket frame has been designed as thin as possible to reduce the wind resistance, it is still a solid structure. In actual use, if the racket frame is broken or damaged at some point, it means that the entire racket frame is useless, and even the entire racket is useless. SUMMARY

[0004] In order to improve the situation that the racket frame can only be discarded after being damaged or broken, and also to improve the use flexibility of the existing racket frame, the present application provides a detachable racket frame.

[0005] The detachable racket frame provided by the present application adopts the following technical solution:

[0006] A detachable racket frame comprises at least two unit elements, one of the adjacent unit elements has a convex part, and the other has a concave part. The concave part cooperates with the convex part to make the two adjacent unit elements modularly connected, so as to realize the disassembly and separation of the racket frame into independent unit elements, or the combination and connection of all unit elements to form a ring-shaped racket frame. The unit element is provided with a line hole for passing through the line to form the racket net and to stabilize the racket frame assembled by all unit elements.

[0007] By adopting the above technical solution, after the racket frame is broken, the broken position may be misaligned, and the line stretched on the racket frame may be loose, which causes the uneven racket net and affects the normal operation of the racket. Therefore, in most cases, the user discards the broken racket.

[0008] The detachable racket frame of this application is modularly connected or disassembled from at least two unit components with corresponding concave or convex parts. If a part of the frame breaks or is damaged, the strings can be loosened, the broken or damaged unit component replaced, and then the racket can be reassembled and the strings stretched to form a complete racket. In this way, only the damaged part of the frame needs to be replaced, reducing the high cost of "replacing the entire racket" to the low cost of "replacing a part," thereby reducing the user's operating costs. Moreover, after all the unit components are assembled, they form a ring-shaped racket frame; after the strings are stretched again, the strings are threaded and wound around the stringing holes of the unit components to form the racket net. Adjacent unit components can be securely connected through this, and the strings pull all unit components towards the center of the racket frame, tightening the net and thus making the entire frame stable.

[0009] At the same time, users can choose different weights or shapes of components to assemble according to their sports training needs, forming lightweight or heavy rackets; they can also choose different colors, patterns and paint styles of components to combine and assemble personalized rackets according to their personal preferences.

[0010] Optionally, all of the said unit components may be made of the same or one different material.

[0011] By adopting the above technical solutions and considering the needs of ball striking, the frame shape of tennis rackets, badminton rackets, squash rackets, and other rackets is not a simple ellipse or a single geometric shape, but a complex curved structure that has been carefully designed.

[0012] Unit components made of different materials have different parameters such as hardness, strength, weight, wear resistance, and impact resistance; depending on the different performance requirements of the actual movement, unit components made of different composite materials can also be selected.

[0013] Optionally, all of the said unit components may be manufactured using the same or one different process.

[0014] By adopting the above technical solutions, unit components made with different processes may have different wear resistance, drop resistance, and crack resistance characteristics. Even unit components made of the same material but using different processes in the same position on the racket frame may have weight differences. Moreover, the production costs of different processes will also vary. Such a variety of unit components with different cost levels can meet the needs of different users.

[0015] Optionally, the modular connection is a plug-in connection; of the two unit components in the plug-in connection, one unit component has an outwardly protruding plug-in block, which is the convex portion; the other unit component has an inwardly recessed plug-in groove that matches the plug-in block, which is the concave portion.

[0016] By adopting the above technical solution, adjacent unit components can be connected in a modular way through matching plug-in blocks and plug-in slots. Disassembly and installation are convenient and quick, and the detachable connection structure is simple and highly integrated.

[0017] Optionally, one end of the unit is provided with the plug-in block, and the other end is provided with the plug-in groove, both the plug-in block and the plug-in groove extending along the axial direction of the unit.

[0018] By adopting the above technical solution, when disassembling and assembling adjacent unit components, force is applied along the axial direction of the unit component, and the groove wall of the insertion slot forms a limit on the insertion block perpendicular to the racket face. After the racket is assembled, the taut racket strings further strengthen the connection between adjacent unit components, ensuring the ease of disassembly and assembly and the stability of the connection between adjacent unit components.

[0019] Optionally, the modular connection is a snap-fit ​​connection; of the two unit components in the snap-fit ​​connection, one unit component has an outwardly protruding snap-fit ​​block, which is the convex part; the other unit component has an inwardly recessed snap-fit ​​cavity that matches the snap-fit ​​block, which is the concave part.

[0020] By adopting the above technical solution, the snap-fit ​​connection can achieve self-locking, reducing the possibility of loosening between adjacent unit components. Thus, even when the racket frame is assembled but the strings have not yet been stretched, the snap-fit ​​block and snap-fit ​​cavity can temporarily maintain the connection stability of the entire racket frame.

[0021] Optionally, one end of the unit component is provided with the snap-fit ​​block, and the other end is provided with the snap-fit ​​cavity; the snap-fit ​​block includes a deformable part, protrusions on both sides of the deformable part, and a connecting part on one side of the protrusions, the end of the connecting part away from the protrusions is used to connect with the unit component; the snap-fit ​​cavity extends along the axial direction of the unit component, and the cavity wall of the snap-fit ​​cavity is provided with snap-fit ​​holes for the protrusions to snap into, there are two snap-fit ​​holes; the maximum distance between the two protrusions under normal conditions is greater than the minimum distance between the two snap-fit ​​holes; when the two protrusions are forced to move closer to each other and cause the deformable part to be compressed, the maximum distance between the two protrusions is less than the inner diameter of the snap-fit ​​cavity, so that the snap-fit ​​block is inserted into the snap-fit ​​cavity.

[0022] By adopting the above technical solution, after adjacent unit components are connected, the protrusions are inserted into the snap-fit ​​holes to form an effective limit and prevent adjacent unit components from becoming loose. When disassembling adjacent unit components, press the protrusions, the two protrusions move closer to each other, the deformed part bends, and then apply force to pull the snap-fit ​​block out of the snap-fit ​​cavity, thus taking into account the convenience of disassembling and assembling adjacent unit components.

[0023] Optionally, the unit component is provided with stabilizing members on both sides of the snap-fit ​​block. The stabilizing members have abutting surfaces for contacting and abutting with the cavity wall of the snap-fit ​​cavity. Multiple reinforcing rods are provided between the two stabilizing members, and the two ends of the reinforcing rods are respectively connected to the two stabilizing members.

[0024] By adopting the above technical solution, the cooperation between the stabilizing component and the reinforcing rod essentially forms a plug-in connection between adjacent unit components. That is, the snap-fit ​​connection and the plug-in connection are structurally linked. The snap-fit ​​connection forms an effective limit, and the plug-in connection reduces the vibration between adjacent unit components. This further ensures the connection stability between adjacent unit components while reducing abnormal noise and loosening during the use of the racket frame.

[0025] Optionally, the outer surface of one end of the unit component is provided with a mounting groove, and the unit component is provided with a through hole in the groove wall of the mounting groove. One end of the through hole passes through the side wall of the mounting groove, and the other end passes through the outer wall of the unit component. A connector is provided at the end of the unit component away from the mounting groove. A through cavity is provided at the end of the connector away from the unit component. The through cavity extends in a direction perpendicular to the racket face, and the two ends of the through cavity pass through the two sides of the connector. The unit component is provided with a positioning shaft. Both the through hole and the through cavity are used for the positioning shaft to pass through. After the positioning shaft passes through the through hole and the through cavity, adjacent unit components can be rotatably and fixedly connected.

[0026] By adopting the above technical solution, in this solution, the part of the positioning shaft installed in the through hole, located in the through cavity, corresponds to the aforementioned protrusion, and the corresponding through cavity corresponds to the concave part. This achieves flexible adaptation and independent modularization with limited degrees of freedom between adjacent unit components. On the one hand, it allows for fine adjustment of the angle between adjacent unit components, further improving the flexibility of the frame; on the other hand, when replacing one unit component, the remaining unit components can be rotated, providing clearance for the replacement operation and making the replacement operation easier.

[0027] Optionally, the modular connection is an overlapping connection. In the two unit components of the overlapping connection, one unit component has an outwardly protruding overlapping block, and the other unit component has an inwardly recessed overlapping platform that matches the overlapping block. When assembled into the racket frame, the mating overlapping block and the overlapping platform are positioned such that one is close to the inner ring of the racket frame and the other is close to the outer ring of the racket frame. The mating overlapping block and the overlapping platform have at least one identical stringing hole. The end of the overlapping block protrudes inward towards the inner ring and is provided with an insert, which is the convex portion. The overlapping platform is provided with a groove for the insert to be inserted, which is the concave portion.

[0028] By adopting the above technical solution, the structure of the overlapping block and the overlapping platform is simple and easy to manufacture; and the detachable connection formed by the overlapping connection is more convenient and faster. Moreover, with the help of the same string holes, the racket frame composed of the overlapping connection can be fully tightened after the racket strings are stretched.

[0029] The insert and slot quickly overlap, allowing the common threading hole to be quickly aligned, making it easy to thread the batting wire.

[0030] Optionally, the end of the overlapping block is provided with an insert and a first insertion block, the insert and the first insertion block being distributed on different sides of the overlapping block; the overlapping platform and the unit are respectively provided with a groove for the insert to be fitted and a second slot for the first insertion block to be fitted in the area of ​​the overlapping platform that avoids the overlapping platform; the end face of the overlapping platform near the adjacent unit is provided with a second insertion block, and the adjacent unit is provided with a second slot for the second insertion block to be fitted.

[0031] By adopting the above technical solution, during assembly, adjacent unit components are disassembled and installed from the side, so that the insert and slot, the first insert and the first slot, and the second insert and the second slot are disassembled or combined in a corresponding manner. The racket frame formed thereby has a certain pull along the axial direction of the unit components of the frame, making it less likely to fall off. It can temporarily maintain the stability of the racket frame, and the corresponding stringing holes can also be effectively aligned, which is convenient for stringing.

[0032] Optionally, the groove is elongated along the length of the unit, and the second slot communicates with the groove; when connected, the insert is securely embedded in the groove, and the second insert is inserted into the second slot.

[0033] By adopting the above technical solution, the long strip-shaped groove and the insert can reduce the risk of bending at the relative connection position of adjacent unit components and improve the stability of the connection between adjacent unit components.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] The racket frame consists of at least two units, which are modularly designed to be detachable. They can be disassembled and reassembled as needed. The units are equipped with threading holes, allowing users to adjust the weight of the frame, perform partial replacement repairs, and personalize the racket according to their own needs, thereby improving the racket's flexibility and extending its service life.

[0036] Two interconnected unit components are respectively provided with a plug-in block and a plug-in slot. Both the plug-in block and the plug-in slot extend along the axial direction of the unit component. The detachable connection between adjacent unit components is achieved through the cooperation of the plug-in block and the plug-in slot. The disassembly and assembly structure is simple and convenient, and the connection stability is high.

[0037] Adjacent unit components are detachably connected via snap-fit ​​connections. Furthermore, by incorporating stabilizing components and reinforcing rods, a plug-in connection is added to the snap-fit ​​connection. This plug-in connection reduces vibration between adjacent unit components, thereby further ensuring the stability of the connection between adjacent unit components while reducing abnormal noises and loosening during racket frame use.

[0038] Adjacent unit components are detachably connected by overlapping, and the overlapping block and the overlapping platform have at least one identical wire hole. After overlapping, the adjacent unit components are further fixed by tightening with a tensioning wire, which increases the ease of assembly and disassembly of the unit components while ensuring the stability of the connection between adjacent unit components. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0040] Figure 2 This is a schematic diagram illustrating the structure of the plug-in block in Embodiment 1.

[0041] Figure 3 This is a schematic diagram illustrating the structure of the insertion slot in Embodiment 1.

[0042] Figure 4 This is a schematic diagram illustrating the structure of the snap-fit ​​block and snap-fit ​​cavity in Embodiment 2.

[0043] Figure 5 This is a schematic diagram illustrating the installation position of the reinforcing rod in Embodiment 2.

[0044] Figure 6 This is a schematic diagram illustrating the structure of the connector in Embodiment 3.

[0045] Figure 7 This is a schematic diagram illustrating the structure of the hollow shaft in Example 3.

[0046] Figure 8 This is a schematic diagram illustrating the structure of the positioning shaft installed on the adjacent unit in Embodiment 3.

[0047] Figure 9 This is a structural diagram used to illustrate the overlapping block and overlapping platform in Embodiment 4.

[0048] Figure 10 This is a structural schematic diagram used to illustrate the connection state between the overlapping block and the overlapping platform in Embodiment 5.

[0049] Figure 11 This is a structural schematic diagram used to illustrate the disassembled state of the overlapping block and the overlapping platform in Embodiment 5.

[0050] Figure 12This is a schematic diagram of the first composition structure of the unit component in the racket frame of Embodiment 6 of this application, taking a badminton racket as an example.

[0051] Figure 13 This is a schematic diagram of the second composition of the unit component in the racket frame of Embodiment 6 of this application, taking a squash racket as an example.

[0052] Figure 14 This is a schematic diagram of the third type of unit component in the racket frame of Embodiment 6 of this application, taking a tennis racket as an example.

[0053] Explanation of reference numerals in the attached drawings: 1. Unit component; 2. Insert block; 21. Abutment block; 22. Support rod; 23. Overlap block; 231. Insert block; 232. First insert block; 233. Second slot; 24. Overlap platform; 241. Insert groove; 242. Second insert block; 243. First slot; 25. Wire hole; 3. Insert groove; 4. Snap block; 41. Deformation part; 42. Protrusion; 421. Guide surface; 43. Connecting part; 44. Stabilizer; 45. Reinforcing rod; 5. Snap cavity; 51. Snap hole; 6. Mounting groove; 61. Through hole; 7. Connector; 71. Through cavity; 81. Hollow shaft; 811. First abutment joint; 812. Dividing seam; 82. Wedged shaft; 821. Second abutment joint; 9. Throat; 10. Handle; 101. Barrel. Detailed Implementation

[0054] The frame is the core component of all rackets with a net surface, including badminton rackets, tennis rackets, squash rackets, and other sports equipment, as well as children's toy rackets and electric mosquito swatters. Among these, badminton rackets, tennis rackets, and squash rackets have higher requirements during use and are more prone to damage, thus requiring more research into related technologies.

[0055] Most racket frames on the market are one-piece structures with stringing holes on the side. In actual use, if a part of the frame breaks or is damaged, the entire frame, or even the entire racket, becomes unusable. Furthermore, users increasingly demand customization of rackets, especially professional athletes and amateur enthusiasts who have a growing need for personalized frame weight, materials, and appearance. Traditional one-piece frames struggle to meet these needs, forcing users to purchase multiple rackets to suit different scenarios, increasing usage costs. Therefore, to improve racket flexibility and allow users to adjust the frame according to damage locations, weight distribution, and personalized design requirements, this application provides a detachable racket frame.

[0056] The following examples illustrate the application of racket frames in sports equipment such as badminton rackets, tennis rackets, and squash rackets, along with related information. Figures 1-13 This application will be described in further detail.

[0057] Reference Figure 1 This application discloses a detachable racket frame, comprising at least two unit components 1. Adjacent unit components 1 are modularly connected, and all unit components 1 are combined to form a ring-shaped racket frame. Specifically, the racket frame can be disassembled into independent units, and can also be combined through detachable connection structures between unit components 1. Ultimately, all unit components 1 are combined to form a complete ring-shaped racket frame, thereby enabling the racket frame to be detachable and usable according to the user's needs.

[0058] At least one of the adjacent unit components 1 has a thread hole 25. In this way, when all the unit components 1 are combined and connected, the unit component 1 with the thread hole 25 can pull the adjacent unit components 1 towards the center of the frame by means of the pull and tension of the racket string passing through the thread hole 25. The gap between the adjacent unit components 1 approaches zero, and the connection between all the adjacent unit components 1 is more stable and secure.

[0059] Furthermore, each unit 1 can be provided with a threading hole 25, through which the racket string can be threaded, making the racket frame more stable as a whole.

[0060] Therefore, in practice, the frame can have a threading hole in each unit 1, or a threading hole 25 can be provided every other unit 1.

[0061] The racket frame of this application is suitable for various rackets with net surfaces, such as badminton rackets, tennis rackets, and squash rackets. The specific material, shape, and manufacturing process of each unit 1 can be customized according to the characteristics of different rackets and the user's needs.

[0062] For example, badminton rackets have the longest shafts, with frames that are distinctly oval or square; they are relatively lightweight; they require high material rigidity; and the feel is differentiated by the balance point—a heavier head indicates a stronger offensive style, while a lighter head indicates a stronger defensive style. Furthermore, due to their light weight, even slight differences in weight or balance point can result in significant variations in feel. For the racket frame, the head is typically the widest and stiffest area, primarily bearing the maximum impact force from the shuttlecock. The cross-sectional shape of the sides determines the racket's performance orientation, and the throat needs to ensure structural stability.

[0063] Tennis rackets have a relatively large net; the internal structure of the frame is complex and often equipped with a shock absorption system; the frame needs to have high torsional stiffness and strength; the feel is adjusted through weight distribution—a heavier racket head results in greater hitting power, while a lighter racket head allows for more agile swings; the cross-sectional shape of the frame affects air resistance during the swing. For tennis racket frames, the size and shape of the racket head are fundamental to racket performance, the cross-sectional shape of the sides determines the racket's feel and aerodynamic performance, and the throat is usually designed with a triangular section.

[0064] Squash rackets typically have a teardrop-shaped net and a heavier head, providing greater hitting power. The frame is relatively lightweight, prioritizing maximum swing speed. Compared to tennis rackets, squash racket frames are narrower and thinner, with less stringent requirements on the frame's cross-sectional shape. For the squash racket frame, the head shape determines the racket's performance orientation, while the cross-sectional shape of the sides needs to ensure both lightweight design and strength. Higher stiffness on the sides results in a clearer feel but poorer shock absorption; softer sides provide better shock absorption and a more comfortable feel but sacrifice some control precision. The throat requires weight reduction and structural reinforcement, typically featuring an open triangular section.

[0065] Furthermore, for the same racket frame, each unit component 1 can be made of the same material, including carbon fiber, aluminum alloy, titanium alloy, stainless steel, single metal, or high-strength plastic. Alternatively, each unit component 1 can be made of multiple different materials to allow for the selection or customization of suitable unit components 1 based on the different requirements of various parts of the frame for hardness, strength, density, abrasion resistance, and impact resistance. This allows for the final combination to form racket frames suitable for different hitting needs, and also enables the design of more appropriate performance distributions based on different types of racket frames. Of course, to improve the performance of each unit component 1, each unit component 1 can also be made of a composite of multiple different materials.

[0066] For the same racket frame, each unit component 1 can be made using one process, including casting, forging, injection molding, 3D printing, sheet metal cutting, CNC machining, and other processing techniques. Alternatively, each unit component 1 can be made using multiple different processes, allowing for the selection of suitable unit components 1 based on properties such as wear resistance, impact resistance, crack resistance, and overall density, thus producing unit components 1 at different cost levels and meeting the needs of different users.

[0067] Of course, by selecting unit 1 made of different materials and / or different processes, users' personalization and decoration needs can also be met.

[0068] The shape of unit 1 can be arc-shaped, straight-shaped, or other irregular shapes.

[0069] When a racket frame breaks, the break may be misaligned, the strings stretched taut over the frame may loosen, and the racket net may become uneven, thus affecting the normal hitting and racket operation. Therefore, in most cases, users will discard the broken racket.

[0070] With the above design, if a part of the racket frame breaks or is damaged, the net can be loosened accordingly, the broken or damaged unit 1 can be replaced, and then the racket can be reassembled and the strings stretched to form a complete racket. In this way, only the damaged part needs to be replaced, reducing the high cost of "replacing the entire racket" to the low cost of "replacing a part", thus reducing the user's operating costs. Moreover, after all the unit components 1 are assembled, they form a ring-shaped racket frame; after the strings are stretched again, the strings are threaded through the stringing holes 25 of each unit component 1, which allows adjacent unit components 1 to be securely connected, and the strings pull all the unit components 1 towards the center of the racket frame, tightening the net and thus making the entire racket frame stable.

[0071] At the same time, users can choose different weight units 1 to assemble according to their sports training needs, forming lightweight rackets or heavy rackets; they can also choose different colors, patterns or even paint styles of units 1 to combine and assemble personalized rackets.

[0072] The modular, detachable connection structure between adjacent unit components 1 can be a plug-in connection, snap-fit ​​connection, chain connection, overlap connection, threaded connection, or rotational snap-fit ​​connection. Furthermore, the connection method between unit components 1 within the same racket frame can be the same, or it can be a combination of several different detachable connection structures. For example, a racket frame may consist of three unit components 1, with two unit components 1 connected by a threaded rotational connection, and these two unit components 1 can be connected to the third unit component 1 by a plug-in connection.

[0073] In practical use, based on the characteristics of different parts of the racket frame that are prone to cracking (such as parts far from the throat) or breakage (such as the middle of the frame), different detachable connection structures can be selected between adjacent unit components 1 in different locations to meet varying needs. For example, detachable connection methods such as threaded / screw connections or rotating snap connections can be preferred between unit components located far from the throat of the frame to meet stability requirements. For unit components located in the middle of the frame, snap-fit ​​connections or plug-in connections can be preferred to meet the requirements of quick assembly and bending resistance.

[0074] Furthermore, when assembling all unit components 1, unit component 1 can be assembled into two parts first, such as the upper and lower parts of the racket frame, and then these two parts can be assembled and connected accordingly. In this way, the possibility of the last unit component 1 having too much interference and failing to be assembled smoothly to form a ring-shaped racket frame can be reduced.

[0075] In adjacent unit components 1, one unit component 1 has a protrusion and the other unit component 1 has a recess. The recess and the protrusion cooperate to make the two adjacent unit components 1 modularly connected. In other words, the protrusion of one unit component 1 can be detachably installed in the recess of its adjacent unit component 1; the matching protrusion and recess cooperate to enable the transmission of force (tension, compression, shear, torsion) and positioning of the connected parts of the assembled racket frame; and it is convenient to disassemble the racket frame into modular, independent unit components 1 as needed. Depending on the requirements, the detachable connection between the two units 1 can also be designed as an interference fit (such as a snap-fit ​​connection) or a flat clamping (such as a threaded connection). To further improve the stability of the detachable connection, auxiliary mechanisms such as tape and magnetic blocks can be added between the two unit components 1.

[0076] The following examples 1-5 illustrate some of the detachable connection methods. Example 1

[0077] Reference Figure 2 and Figure 3 The aforementioned detachable connection is a plug-in connection. Of the two unit components 1 in the plug-in connection, one unit component 1 has an outwardly protruding plug-in block 2, and the other unit component 1 has an inwardly recessed plug-in groove 3 that matches the plug-in block 2. In this embodiment, the mating recess and protrusion correspond to the plug-in block 2 and the plug-in groove 3.

[0078] Specifically, one end of unit 1 is provided with a plug-in block 2, and the other end is provided with a plug-in groove 3. Both the plug-in block 2 and the plug-in groove 3 extend along the axial direction of unit 1. The plug-in block 2 of one unit 1 and the plug-in groove 3 of the adjacent unit 1 are plugged into each other to realize the detachable connection between adjacent unit 1.

[0079] In this embodiment, one plug-in block 2 is provided, and one plug-in slot 3 is provided accordingly. In other embodiments, two or more plug-in blocks 2 may be provided, and two or more plug-in slots 3 may be provided accordingly.

[0080] The plug-in block 2 can be made of the same material as the unit 1, or it can be made of different materials. The two can be made by composite manufacturing or integral molding.

[0081] The plug block 2 and the plug slot 3 can be fixed by friction, while the tensioning of the tapping wire further ensures the stable connection of all unit components 1.

[0082] The connection stability can also be ensured by interference fit between the plug block 2 and the plug slot 3.

[0083] Bolts can also be added after inserting the plug block 2 into the plug slot 3 to enhance connection stability.

[0084] In this embodiment, the insertion block 2 includes multiple abutment blocks 21, which are disposed on the end face of the unit 1 and arranged around the axial direction of the unit 1. A support rod 22 is disposed in the space between the multiple abutment blocks 21, and the two ends of the support rod 22 are respectively connected to two opposite abutment blocks 21.

[0085] In this embodiment, two abutment blocks 21 are provided, and the two abutment blocks 21 are arranged opposite each other. Four support rods 22 are provided, and the four support rods 22 are arranged at the four corner positions of the abutment blocks 21.

[0086] Among them, the support rod 22 can also be made of shape memory alloy. When connecting adjacent unit 1, the support rod 22 is heated at high temperature and force is applied to bend the support rod 22 so that the plug block 2 can be smoothly inserted into the plug groove 3. After insertion, the support rod 22 gradually recovers its deformation as the temperature drops, which drives the abutment block 21 to abut against the groove wall of the plug groove 3, thereby strengthening the connection stability between adjacent unit 1.

[0087] Permanent magnets or electromagnets can also be set in the insertion slot 3, magnetic components can be set in the insertion block 2 or the insertion block 2 can be made of magnetic materials, and magnetic attraction connection can be added between the insertion block 2 and the insertion slot 3 to further enhance the connection stability between adjacent unit components 1. At the same time, when the insertion block 2 tends to loosen relative to the insertion slot 3 or has become slightly loose during use, it will be driven to restore itself, thus extending the service life of the racket. Example 2

[0088] Reference Figure 4 and Figure 5 The difference between this embodiment and Embodiment 1 is that the detachable connection described above is a snap-fit ​​connection. Of the two unit components 1 in the snap-fit ​​connection, one unit component 1 has an outwardly protruding snap-fit ​​block 4, and the other unit component 1 has an inwardly recessed snap-fit ​​cavity 5 that matches the snap-fit ​​block 4. In this embodiment, the mating recess and protrusion correspond to the snap-fit ​​block 4 and the snap-fit ​​cavity 5, respectively.

[0089] Specifically, one end of unit 1 is provided with a snap-fit ​​block 4 and the other end is provided with a snap-fit ​​cavity 5. The snap-fit ​​block 4 of one unit 1 is snapped into the snap-fit ​​cavity 5 of the adjacent unit 1 to realize the detachable connection between adjacent unit 1.

[0090] Specifically, the snap-fit ​​block 4 includes a deformable portion 41, protrusions 42 disposed on both sides of the deformable portion 41, and a connecting portion 43 disposed on one side of the protrusions 42. The end of the connecting portion 43 away from the protrusions 42 is used to connect with the unit component 1. The snap-fit ​​cavity 5 is disposed along the axial direction of the unit component 1. The cavity wall of the snap-fit ​​cavity 5 has two snap-fit ​​holes 51 for the protrusions 42 to be snapped into. Under normal conditions, the maximum distance between the two protrusions 42 is greater than the minimum distance between the two snap-fit ​​holes 51. When the two protrusions 42 are forced to move closer to each other and cause the deformable portion 41 to be compressed, the maximum distance between the two protrusions 42 is less than the inner diameter of the snap-fit ​​cavity 5, so that the snap-fit ​​block 4 can be inserted into the snap-fit ​​cavity 5.

[0091] The protrusion 42 has a guide surface 421 on the side away from the deformable part 41. In this embodiment, the guide surface 421 is an inclined plane; in other embodiments, the guide surface 421 may also be an arc-shaped surface.

[0092] In this embodiment, the deformable part 41 is arc-shaped to facilitate smoother deformation under stress. In other embodiments, the deformable part 41 may also be linear.

[0093] In this embodiment, the protruding position of the deformable part 41 is located in the space between the two protrusions 42 and faces the unit 1 where the deformable part 41 is located; in other embodiments, the protruding surface of the deformable part 41 may also be away from the unit 1 where the deformable part 41 is located.

[0094] Furthermore, unit 1 is provided with stabilizing members 44 on both sides of the snap-fit ​​block 4. The stabilizing members 44 have abutting surfaces, which are used to contact and abut against the cavity wall of the snap-fit ​​cavity 5 to further enhance the connection stability between adjacent unit 1.

[0095] Furthermore, multiple reinforcing rods 45 are provided between the two stabilizing members 44. The two ends of the reinforcing rods 45 are respectively connected to the two stabilizing members 44 to establish a connection between the two stabilizing members 44, increase the structural strength, and at the same time ensure that the stabilizing members 44 are always tightly pressed against the cavity wall of the snap-fit ​​cavity 5, further ensuring the connection stability between adjacent unit parts 1. Example 3

[0096] The difference between this embodiment and Embodiment 1 is that the aforementioned detachable connection is a chain connection, which enables flexible adaptation and independent modularization of adjacent unit components 1 with limited degrees of freedom. On the one hand, this allows for fine-tuning of the angle between adjacent unit components 1, further improving the flexibility of the frame; on the other hand, when replacing one unit component 1, the remaining unit components 1 can be rotated, providing clearance for the replacement operation and making the replacement operation easier.

[0097] Reference Figure 6Specifically, a mounting groove 6 is provided on the outer side of one end of the unit 1, and a through hole 61 is provided on the groove wall of the mounting groove 6. One end of the through hole 61 passes through the groove side wall of the mounting groove 6, and the other end passes through the outer wall of the unit 1.

[0098] A connector 7 is provided at the end of unit 1 away from the mounting groove 6. A through cavity 71 is provided at the end of connector 7 away from unit 1. The through cavity 71 extends in a direction perpendicular to the racket face. The two ends of the through cavity 71 pass through both sides of connector 7.

[0099] Reference Figure 7 and Figure 8 Unit 1 is provided with a positioning shaft. Both the through hole 61 and the through cavity 71 are used for the positioning shaft to pass through. After the positioning shaft passes through the through hole 61 and the through cavity 71, adjacent unit 1 units can be rotatably and fixedly connected. Furthermore, when the connector 7 rotates to abut against the bottom wall of the mounting groove 6, unit 1 can no longer rotate in that direction. In this embodiment, the portion of the positioning shaft installed in the through hole 61 located in the through cavity 71 corresponds to the aforementioned protrusion, and the corresponding through cavity 71 corresponds to the concave portion.

[0100] Specifically, the positioning shaft includes a hollow shaft body 81 and a wedge-shaped shaft body 82. The outer diameter of the hollow shaft body 81 is the same as the diameter of the through hole 61. One end of the hollow shaft body 81 has a first abutment 811, which is used to abut against the side wall of the unit 1. Multiple dividing slits 812 are formed through the end of the hollow shaft body 81 away from the first abutment 811. The dividing slits 812 extend along the length of the hollow shaft body 81 and penetrate the end face of the hollow shaft body 81 away from the first abutment 811. The multiple dividing slits 812 are arranged at intervals along the circumference of the hollow shaft body 81.

[0101] The outer diameter of the wedge-shaped shaft 82 is slightly larger than the inner diameter of the hollow shaft 81, and the hollow cavity of the hollow shaft 81 is used for insertion of the wedge-shaped shaft 82. Furthermore, the inner diameter of the hollow shaft 81 is larger than the diameter of the string. One end of the wedge-shaped shaft 82 has a second abutment 821, which abuts against the inner wall of the hollow shaft 81 at the location where the dividing slit 812 is provided.

[0102] When assembling adjacent unit components 1, first align the through hole 61 of one unit component 1 with the through cavity 71 of the adjacent unit component 1. Then, pass the hollow shaft 81 through the through hole 61 and the through cavity 71 in sequence until the first abutment 811 abuts against the side wall of the unit component 1. At this time, the dividing slit 812 should be exposed on the other side wall of the unit component 1. Then, insert the wedge-shaped shaft 82 from the end of the hollow shaft 81 where the dividing slit 812 is opened. During the insertion process, the second abutment 821 gradually pushes open the end of the hollow shaft 81 away from the first abutment 811 until the end of the hollow shaft 81 abuts against the side wall of the unit component 1. The second abutment 821 abuts against the end of the hollow shaft 81 and the wedge-shaped shaft 82 is tightly embedded in the hollow cavity of the hollow shaft 81, ensuring a stable connection between adjacent unit components 1.

[0103] In addition, during the above process, the racket strings can be inserted simultaneously with the wedge shaft 82, thereby establishing a connection between the racket strings and the frame and further ensuring the overall structural stability of the racket. Example 4

[0104] The difference between this embodiment and embodiment 1 is that the above-mentioned detachable connection is an overlapping connection. In the two unit components 1 of the overlapping connection, one unit component 1 has an outwardly protruding overlapping block 23, and the other unit component 1 has an inwardly recessed overlapping platform 24 that matches the overlapping block 23.

[0105] Reference Figure 9 When assembling the racket frame, the mating overlapping block 23 and overlapping platform 24 are positioned such that one is close to the inner surface of the racket frame and the other is close to the outer surface of the racket frame. The mating overlapping block 23 and overlapping platform 24 have at least one identical stringing hole 25, allowing the racket strings to be threaded through the same holes 25 at the positions of the overlapping platform 24 and overlapping block 23 after assembly. When the strings are taut, the racket frame is fully tightened, ensuring stable connection between adjacent unit components while simplifying assembly and disassembly.

[0106] Furthermore, the end of the overlapping block 23 protrudes inward and is provided with an insert 231. The overlapping platform 24 is provided with an insert groove 241 for the insert 231 to be inserted. After overlapping, the groove wall of the insert 241 and the insert 231 cooperate to limit the unit 1 along its axial direction, thereby forming a pre-positioning and pre-fixing, which facilitates the alignment of the same wire holes 25 and also facilitates the winding of the wire.

[0107] In this embodiment, the overlapping platform 24 is close to the inner surface of the racket frame, and the overlapping block 23 is close to the outer surface of the racket frame. It is worth noting that in other embodiments, the overlapping platform 24 may also be located close to the outer surface of the racket frame, and the overlapping block 23 may also be located close to the inner surface of the racket frame, with the overlapping platform 24 overlapping the overlapping block 23 during assembly. Example 5

[0108] Reference Figure 10 The difference between this embodiment and embodiment 4 is that, in the overlapping connection method between adjacent unit components 1 of the racket frame, the end of the overlapping block 23 is provided with an insert 231 and a first insert 232, which are distributed on different sides of the overlapping block 23. The overlapping platform 24 and the unit component 1, avoiding the area of ​​the overlapping platform 24, are respectively provided with a groove 241 for the insert 231 to be fitted and a second slot 233 for the first insert 232 to be fitted. The end face of the overlapping platform 24 near the adjacent unit component 1 has a protruding second insert 242, and the adjacent unit component 1 has a second slot 233 for the second insert 242 to be fitted.

[0109] During assembly, adjacent unit components 1 are inserted and removed from the side to achieve disassembly and assembly, allowing the insert 231 and slot 241, the first insert 232 and first slot 243, and the second insert 242 and second slot 233 to cooperate in a corresponding manner for disassembly or assembly. With the help of this structure, the racket frame formed by the overlapping assembly has a certain degree of limitation and tension along the axial direction of unit component 1, making it less prone to detachment. Simultaneously, it also has a certain degree of limitation in the radial direction of unit component 1, thus ensuring the stability of the racket frame during pre-positioning and pre-fixation. Furthermore, the corresponding stringing holes 25 can be effectively aligned, facilitating stringing.

[0110] Reference Figure 11 The groove 241 is elongated along the length of unit 1, and the second slot 233 communicates with the groove 241. During connection, the insert 231 is securely embedded in the groove 241, and the second insert 242 is inserted into the second slot 233. The elongated groove 241 and the insert 221 cooperate to reduce the risk of bending at the relative connection position of adjacent unit 1 and improve the stability of the connection between adjacent unit 1. Example 6

[0111] To improve the efficiency of quick disassembly and assembly of the racket frame, this application discloses a racket frame in which the various unit components 1 are regularly distributed to achieve the purpose of quick disassembly and assembly. The racket includes a throat 9 connected to the shaft 101.

[0112] To ensure the torsional resistance between the shaft 101, the throat 9, and the frame, the throat 9 is fixedly connected to one unit component 1 that forms the frame, and the remaining unit components 1 are then assembled accordingly. Since the throat 9 is the core hub and core triangular area connecting the frame and handle 10 and bearing impact and torsional forces, combining the throat 9 with one unit component 1 as a whole ensures the independent design and structural strength of the throat 9, and also allows for individual design of its material and shape. The remaining unit components 1 are located on both sides of the racket's mid-length axis, allowing for replacement and weight adjustment of any part, ensuring the frame's flexibility in use.

[0113] To facilitate easier weight adjustment, replacement of damaged parts, or customization, the racket frame is equipped with corresponding unit components 1, and the number of these unit components 1 is relatively small. The racket frame can be divided into an odd number of unit components 1 with a total number of ≥3. All unit components 1, except for the unit component 1 fixedly connected to the throat 9, are symmetrically distributed along the mid-length axis of the shaft 101.

[0114] like Figure 12 There are three unit components 1. The throat 9 is connected to one of the unit components 1, and the other two unit components 1 are located on both sides of the long axis of the racket.

[0115] like Figure 13 The racket has five unit components 1. The throat 9 is connected to one of the unit components 1, and the other four unit components 1 are located on both sides of the vertical axis of the racket. Compared with three unit components 1, the racket frame is divided into more detailed modules, which improves the accuracy of weight adjustment, personalized settings and replacement of damaged parts, reduces costs, and also ensures the overall structural stability of the racket frame.

[0116] Similarly, the racket frame can be divided into an even number of unit components 1, totaling ≥ 4. A unit component 1 can also be fixedly installed at one end of the frame away from the throat 9. This end, being furthest from the throat 9, is the part of the racket most likely to touch the ground during actual use. Avoiding the connection structure of the unit component 1 reduces the probability of damage to the racket as a whole. Based on this, all unit components 1 of the racket frame, except for the one unit component 1 fixedly connected to the throat 9 and the one unit component 1 furthest from the throat 9, can be symmetrically distributed along the central axis of the shaft 101.

[0117] like Figure 14 The racket has four unit components 1. The throat 9 is connected to one of the unit components 1, the racket head is located in another unit component 1 located away from the throat 9, and the other two unit components 1 are located on both sides of the racket's central axis. This design allows the four unit components 1 to correspond to the connection part of the throat 9 (force-bearing pivot area) of the frame, the racket head (impact area), the left side, and the right side (torque control area). The weight of the racket head directly determines the racket's swing weight and balance point, and the racket head is relatively easy to damage. Therefore, the racket head is integrated into one unit to improve the ease of weight adjustment and maintenance.

[0118] To meet the personalized needs of different users and avoid the easily damaged parts of the racket frame caused by different user habits, each unit 1 of the racket frame can also be designed differently, and all unit 1 can be asymmetrically combined and installed.

[0119] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A detachable racket frame, characterized in that: The racket frame includes at least two unit components (1), one of which has a protrusion and the other has a recess. The recess and the protrusion cooperate to make adjacent unit components (1) modularly connected, so as to realize the racket frame can be disassembled into independent unit components (1), or all unit components (1) can be combined and connected to form a ring-shaped racket frame. The unit component (1) is provided with a string hole (25), which is used to thread the racket strings to form the racket net and to stabilize the racket frame assembled from all unit components (1). The modular connection is a plug-in connection. Of the two unit components (1) in the plug-in connection, one unit component (1) has an outwardly protruding plug-in block (2), which is the convex portion; the other unit component (1) has an inwardly recessed plug-in groove (3) that matches the plug-in block (2), which is the concave portion; one end of the unit component (1) is provided with the plug-in block (2), and the other end is provided with the plug-in groove (3). Both the plug-in block (2) and the plug-in groove (3) extend along the axial direction of the unit component (1); the plug-in block (2) includes multiple abutment blocks (21), and the multiple abutment blocks (21)... The support rod (22) is set on the end face of the unit (1) and arranged around the axial direction of the unit (1); a support rod (22) is set in the space between the multiple abutting blocks (21), and the two ends of the support rod (22) are respectively connected to two opposite abutting blocks (21); the support rod (22) is made of shape memory alloy. When connecting adjacent unit (1), the support rod (22) is heated at high temperature and force is applied to bend the support rod (22) so that the plug-in block (2) can be smoothly inserted into the plug-in groove (3); after insertion, the support rod (22) gradually recovers its deformation as the temperature drops, and drives the abutting block (21) to abut against the groove wall of the plug-in groove (3).

2. A detachable racket frame, characterized in that: The racket frame includes at least two unit components (1), one of which has a protrusion and the other has a recess. The recess and the protrusion cooperate to make adjacent unit components (1) modularly connected, so as to realize the racket frame can be disassembled into independent unit components (1), or all unit components (1) can be combined and connected to form a ring-shaped racket frame. The unit component (1) is provided with a string hole (25), which is used to thread the racket strings to form the racket net and to stabilize the racket frame assembled from all unit components (1). The modular connection is a snap-fit ​​connection. Of the two unit components (1) in the snap-fit ​​connection, one unit component (1) has an outwardly protruding snap-fit ​​block (4), which is the protrusion; the other unit component (1) has an inwardly recessed snap-fit ​​cavity (5) that matches the snap-fit ​​block (4), which is the recess. The snap-fit ​​block (4) includes a deformable part (41), a protrusion (42) disposed on both sides of the deformable part (41), and a connecting part (43) disposed on one side of the protrusion (42). The end of the connecting part (43) away from the protrusion (42) is used to connect with the unit component (1). The snap-fit ​​cavity (5) extends along the axial direction of the unit component (1). The cavity wall of the snap-fit ​​cavity (5) is provided with snap-fit ​​holes (51) for the protrusion (42) to be snapped into. There are two snap-fit ​​holes (51). The maximum distance between the two protrusions (42) under normal conditions is greater than the minimum distance between the two snap-fit ​​holes (51). Spacing; when the two protrusions (42) are forced to approach each other and cause the deformation part (41) to compress, the maximum spacing between the two protrusions (42) is less than the inner diameter of the snap-fit ​​cavity (5), so that the snap-fit ​​block (4) is inserted into the snap-fit ​​cavity (5); the unit (1) is provided with a retaining member (44) on both sides of the snap-fit ​​block (4), the retaining member (44) has an abutting surface for contacting and abutting with the cavity wall of the snap-fit ​​cavity; four retaining members (44) are provided, the four of which are The stabilizing members (44) are arranged in pairs on both sides of the snap-fit ​​block (4), and the two stabilizing members (44) on the same side of the snap-fit ​​block (4) are connected by the connecting block; there are four reinforcing rods (45), and the four reinforcing rods (45) are arranged in two layers at intervals along the length direction of the unit (1). One end of the two reinforcing rods (45) in the same layer is connected to the stabilizing member (44), and the other end is connected to the connecting block; the two layers of reinforcing rods (45) are staggered.

3. A detachable racket frame, characterized in that: The racket frame includes at least two unit components (1), one of which has a protrusion and the other has a recess. The recess and the protrusion cooperate to make adjacent unit components (1) modularly connected, so as to realize the racket frame can be disassembled into independent unit components (1), or all unit components (1) can be combined and connected to form a ring-shaped racket frame. The unit component (1) is provided with a string hole (25), which is used to thread the racket strings to form the racket net and to stabilize the racket frame assembled from all unit components (1). The modular connection is a chain connection. One end of the unit (1) has an installation groove (6) on its outer side. The unit (1) has a through hole 61 in the groove wall of the installation groove. One end of the through hole 61 passes through the groove side wall of the installation groove (6), and the other end passes through the outer wall of the unit (1). A connector (7) is provided at the end of the unit (1) away from the installation groove (6). A through cavity (71) is provided at the end of the connector (7) away from the unit (1). Extending along a direction perpendicular to the racket face, the two ends of the through cavity (71) respectively pass through both sides of the connector (7); the unit (1) is provided with a positioning shaft, and both the through hole 61 and the through cavity (71) are used for the positioning shaft to pass through. After the positioning shaft passes through the through hole (61) and the through cavity (71), adjacent unit (1) can be rotatably and fixedly connected; and when the connector (7) rotates to abut against the bottom wall of the mounting groove (6), the unit (1) can no longer rotate in that direction.

4. A detachable racket frame, characterized in that: The racket frame includes at least two unit components (1), one of which has a protrusion and the other has a recess. The recess and the protrusion cooperate to make adjacent unit components (1) modularly connected, so as to realize the racket frame can be disassembled into independent unit components (1), or all unit components (1) can be combined and connected to form a ring-shaped racket frame. The unit component (1) is provided with a string hole (25), which is used to thread the racket strings to form the racket net and to stabilize the racket frame assembled from all unit components (1). The modular connection is an overlapping connection; of the two unit components (1) in the overlapping connection, one unit component (1) has an outwardly protruding overlapping block (23), which is the convex part; the other unit component (1) has an inwardly recessed overlapping platform (24) that matches the overlapping block (23), which is the concave part; when assembled into the racket frame, the mating overlapping block (23) and the overlapping platform (24) are positioned such that one is close to the inner ring of the racket frame and the other is close to the outer ring of the racket frame; the end of the overlapping block (23) protrudes inward towards the inner ring and is provided with an insert (231); the overlapping platform (24) is provided with a groove (241) for the insert (231) to be inserted. The end of the overlapping block (23) is provided with an insert (231) and a first insert (232), the insert (231) and the first insert (232) are distributed on different sides of the overlapping block (23); the overlapping platform (24) and the unit (1) are respectively provided with a groove (241) for the insert (231) to be fitted and a second slot (233) for the first insert (232) to be fitted; the end face of the overlapping platform (24) near the adjacent unit (1) is provided with a second insert (242), and the adjacent unit (1) is provided with a second slot (233) for the second insert (242) to be fitted.

5. The detachable racket frame according to claim 4, characterized in that: The groove (241) is elongated along the length of the unit (1), and the second slot (233) is connected to the groove (241). When connected, the insert (231) is securely embedded in the groove (241), and the second insert (242) is inserted into the second slot (233).

6. The detachable racket frame according to any one of claims 1 to 5, characterized in that: All of the said unit components (1) are made of the same or one different material.

7. The detachable racket frame according to any one of claims 1 to 5, characterized in that: All of the said unit components (1) are made by the same or one different process.

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