Cavity structure with internal pressure for sports equipment buffer structure

Abstract

The utility model discloses a cavity structure with internal pressure for a sports equipment buffer structure, the cavity structure comprises a shell and a support structure, the shell is integrally formed to enclose to form a closed cavity of the cavity structure, and the support structure is arranged in the closed cavity of the cavity structure. The supporting structure is arranged in the shell and abuts against the inner wall of the shell, and the supporting structure is composed of a plurality of repeated cell element structures so as to support the shell and provide supporting force for the cavity structure. According to the buffer structure, the integrally-formed shell and the supporting structure located in the shell are arranged in the cavity structure, the cavity structure is filled with the high-pressure air, and the cavity structure can provide needed elastic force or supporting force so as to further meet the requirements of different sports equipment buffer structures.

Description

Technical Field

[0001] This utility model relates to the field of cushioning materials for sports equipment, and in particular to a cavity structure with internal pressure for use in the cushioning structure of sports equipment. Background Technology

[0002] In sports equipment requiring cushioning performance, such as shoe soles, knee pads, and elbow pads, cushioning structures are typically placed in specific locations to improve cushioning. Current technology generally uses die stamping to create airbag-like cavities within the sports equipment as cushioning structures, thereby improving the equipment's rebound performance for sports protection. However, the shape of these airbag-like cavities is determined by the corresponding mold, resulting in a simple structure that cannot be pressurized internally. Therefore, it's impossible to add targeted support structures, leading to insufficient cushioning effect and compromised durability.

[0003] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a cavity structure with internal pressure for the cushioning structure of sports equipment, so as to solve the problem that the cushioning structure of sports equipment is limited by the mold, has a simple structure and cannot be pressurized inside, which leads to the inability to further enhance the cushioning effect and durability.

[0005] The technical solution of this utility model is as follows:

[0006] The first aspect of this utility model discloses a cavity structure with internal pressure for a cushioning structure of sports equipment, wherein the cavity structure comprises:

[0007] The outer shell is integrally formed and surrounds the sealed cavity that forms the cavity structure;

[0008] A support structure is disposed inside the outer shell and abuts against the inner wall of the outer shell, wherein the support structure is composed of a plurality of repeating cell structures to support the outer shell and provide support for the cavity structure.

[0009] In one embodiment, the housing is filled with air at a pressure greater than 1 atm.

[0010] In one embodiment, the outer shell is integrally formed into an ellipsoid, sphere, octahedron, or cube.

[0011] In one embodiment, the cell structure includes a plurality of rod structures connected end to end to form the cell structure, and the length and diameter of the rod structures are equal.

[0012] In one embodiment, the cell structure consists of 8 rod structures, forming two inverted square pyramids that abut each other.

[0013] In one embodiment, the cell structure consists of 9 rod structures, forming a hexahedral structure formed by two regular tetrahedrons with their base faces touching.

[0014] In one embodiment, the cell structure consists of 36 rod structures, forming a Kelvin lattice structure composed of regular hexagons and squares.

[0015] In one embodiment, the support structure further includes:

[0016] An airbag is disposed inside the outer shell and connected to the inner wall of the outer shell through the cellular structure.

[0017] In one embodiment, the airbag is integrally formed into a sealed airbag corresponding to the shape of the outer shell, and the airbag is located at the center of the outer shell. An even number of the cell structures are symmetrically arranged between the airbag and the inner wall of the outer shell to connect the airbag to the inner wall of the outer shell.

[0018] The second aspect of this utility model discloses a sports equipment cushioning structure, which is composed of a plurality of cavity structures as described in any of the preceding claims for sports equipment cushioning structures.

[0019] In summary, this utility model discloses a cavity structure with internal pressure for cushioning structures in sports equipment. The cavity structure includes an outer shell and a supporting structure. The outer shell is integrally formed to surround and create a sealed cavity, while the supporting structure is located inside the outer shell and abuts against its inner wall. The supporting structure is composed of several repeating cellular structures to support the outer shell and provide support force to the cavity structure. By incorporating an integrally formed outer shell and a supporting structure within the outer shell, and simultaneously providing high-pressure air within the cavity structure, the cavity structure can provide the necessary elasticity or support force to further meet the needs of different sports equipment cushioning structures. Attached Figure Description

[0020] Figure 1 This is a partial perspective view of the cavity structure described in Embodiment 1 of this utility model.

[0021] Figure 2 This is a partial perspective view of the combination of multiple cavity structures in Embodiment 1 of this utility model.

[0022] Figure 3 This is a schematic diagram of the cell structure in the cavity structure described in Embodiment 1 of this utility model.

[0023] Figure 4 This is a partial perspective view of the cavity structure described in Embodiment 2 of this utility model.

[0024] Figure 5 This is a partial perspective view of the combination of multiple cavity structures in Embodiment 2 of this utility model.

[0025] Figure 6 This is a schematic diagram of the cell structure in the cavity structure described in Embodiment 2 of this utility model.

[0026] Figure 7 This is a partial perspective view of the cavity structure described in Embodiment 3 of this utility model.

[0027] Figure 8 This is a partial perspective view of the combination of multiple cavity structures in Embodiment 3 of this utility model.

[0028] Figure 9 This is a schematic diagram of the cell structure in the cavity structure described in Embodiment 3 of this utility model.

[0029] Figure 10 This is a partial perspective view of the cavity structure described in Embodiment 4 of this utility model.

[0030] Figure 11 This is a partial perspective view of the combination of multiple cavity structures in Embodiment 4 of this utility model.

[0031] Figure 12 This is a diagram of the cavity structure of the cushioning structure for sports equipment described in this utility model. Detailed Implementation

[0032] This utility model provides a cavity structure with internal pressure for use in the cushioning structure of sports equipment. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following provides a more detailed description. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0033] In existing sports equipment, airbag-like cushioning structures are typically created through mold stamping to enhance cushioning performance and provide protection during sports activities. However, this method limits the design of the cushioning structure, resulting in a limited and simplistic structure. Furthermore, during stamping, the airbag can only be sealed using thermal bonding or other adhesive methods, preventing the creation of a one-piece, airtight structure and impacting its cushioning effectiveness. Additionally, pressurizing the cavity structure is impossible under these conditions, leading to poor durability and unsuitability for long-term use. This invention utilizes 3D printing technology to create a one-piece, pressurized cavity structure for sports equipment cushioning, forming a sealed cavity within which a supporting structure is formed and filled with high-pressure air, further providing rebound or support force. 3D printing eliminates the constraints of molds, allowing for the addition of different supporting structures to the cavity structure, thereby improving the cushioning effect.

[0034] The cavity structure with internal pressure for cushioning in sports equipment, as described in this utility model, includes an integrally molded shell surrounding and forming a sealed cavity, and a support structure disposed inside the shell and abutting against the inner wall of the shell. The support structure presses against the inner wall of the shell, thereby providing the cavity structure with the necessary support and resilience. Specifically, the support structure and the shell are integrally molded using 3D printing, and the support structure provides support force to the shell, thus providing support force to the overall cavity structure. The support structure is composed of several repeating cell structures, forming a periodically varying support structure, thereby providing uniform support force to the shell. This support force is the elastic force exerted on the user by the surface deformation of the cavity structure under stress when using the sports equipment cushioning structure. By setting different support structures, the cavity structure provides different support forces under stress, thereby better absorbing impacts during movement and providing sports protection for the user. By adjusting the different support structures, different support forces can be provided to the outer shell, thereby forming different degrees of deformation when the cavity structure is subjected to force, providing the required support performance or resilience performance.

[0035] Furthermore, the outer shell is integrally molded into an ellipsoid, sphere, octahedron, or cube shape, and is filled with air at a pressure greater than 1 atm, thus ensuring that the pressure inside the shell is greater than atmospheric pressure. Different shapes of shells are formed through 3D printing to provide specific support and resilience performance for different needs. Simultaneously, the high-pressure air filling within the shell provides even better support and resilience performance for the cavity structure.

[0036] Specifically, such as Figure 1 , Figure 4 and Figure 7 As shown, the cavity structure 100 with internal pressure for cushioning sports equipment according to this invention includes an outer shell 200 and a support structure 300. The outer shell 200 is integrally formed to surround and form a sealed cavity of the cavity structure 100, thereby forming a structure similar to an airbag. The support structure 300 supports the outer shell 200 from within the outer shell 200 to absorb the forces acting on the cavity structure 100 and provide corresponding support. Further, the support structure 300 is composed of a plurality of cell structures 310, and the cell structures 310 have the same shape and size, arranged periodically to form the support structure 300, thereby ensuring that the support structure 300 can provide the same support force to the cavity structure 100 in different directions. Optionally, the cavity structure 100 supports the outer shell 200 through a plurality of the support structures 300 to ensure that the required support force is provided during use. Optionally, after the cavity structure 100 is formed, high-pressure air of 1.2 atm to 2.5 atm is injected into the sealed cavity of the cavity structure 100 to provide better support for the cavity structure 100.

[0037] Optionally, the outer shell 200 is integrally formed in an ellipsoidal, spherical, octahedral, or cubic shape. For example, Figure 2 , Figure 5 , Figure 8 and Figure 11 As shown, cavity structures 100 with shells 200 of the same shape and size can be used to facilitate stacking and combination to form a regular-shaped sports equipment cushioning structure; or cavity structures 100 with shells 200 of the same shape but different sizes can be used to form an irregular-shaped sports equipment cushioning structure for specific needs. Optionally, different shell shapes can be selected according to the application scenario of the sports equipment cushioning structure. For example, for sports equipment such as shoulder straps that need to form a regular shape, a cuboid shell can be used; for sports equipment such as knee pads that need to be twisted freely, an octahedral shell can be used; or for sports equipment such as helmets that need to form a curved surface, a spherical shell can be used. Better still, an ellipsoidal shell 200 can be used, so that the cavity structure 100 is ellipsoidal in shape as a whole, and the major and minor axes of the ellipsoid can be combined to form cushioning structures of different shapes, thus applicable to different scenarios; at the same time, when the cavity structure is under stress, the ellipsoidal cavity structure can avoid stress concentration, thereby extending the service life of the sports equipment cushioning structure.

[0038] Optionally, the thickness of the inner wall of the outer shell 200 can be adjusted according to the needs of the cushioning structure of the sports equipment to provide different support forces in different scenarios. For different types of sports, different body parts, and users in different physical states, the support forces required by the sports equipment in different areas have different requirements for support and resilience. For example, during running and jumping, the cushioning structure of the sole should primarily provide resilience to the user in the area corresponding to the ball of the foot and heel, that is, shorten the rebound time of the cavity structure to assist in the power generation of running and jumping; while the area corresponding to the toes and arch of the foot should primarily provide support to the user in the area corresponding to the ball of the foot and heel, that is, reduce the stroke when the cavity structure is compressed, to reduce the burden on the foot muscles. Optionally, the thickness of the outer shell 200 is 0.1mm-2mm. When better resilience is required, the thickness of the outer shell 200 is reduced, thereby increasing the volume of the air bladder cavity in the cavity structure, accelerating the rebound speed and shortening the rebound time; when better support is required, the thickness of the outer shell 200 is increased, thereby reducing the compressible space of the cavity structure, so as to reduce the stroke when the cavity structure is compressed.

[0039] Furthermore, such as Figure 2 As shown, a support structure 300 is provided inside the outer shell 200. The support structure 300 abuts against the inner wall of the outer shell 200 and provides corresponding support force to the outer shell 200. Specifically, the support structure 300 includes a plurality of repeating cell structures 310. The cell structures 310 have the same size and shape, and are combined in different arrangements to obtain support structures 300 with different structures, thereby providing the required support force to the outer shell 200. Optionally, the cell structure 310 is composed of a plurality of rod structures 311. The rod structures 311 have the same size and shape, and are uniformly cylindrical short rod structures. The rod structures 311 are connected end to end. The cell structure 310 is obtained by combining different numbers of rod structures 311 at a specific angle. Optionally, the diameter of the rod structure 311 is 0.1mm-1mm, and the length of the rod structure 311 is 1mm-10mm. By changing the shape of the cell structure 310 used in the support structure 300, a support structure 300 capable of providing different support forces can be obtained, thereby making the application range of the sports equipment buffer structure wider.

[0040] Furthermore, such as Figure 10As shown, the support structure 300 also includes an airbag 320. The airbag 320 is disposed inside the outer shell 200 with a smaller size, corresponding to the shape of the outer shell 200, and is connected to the inner wall of the outer shell 200 through the cell structure 310. Optionally, the airbag 320 is 3D printed as a single piece and forms an integrated structure with the outer shell 200 through the cell structure 310. When the cavity structure 100 is compressed, the force on the outer shell 200 is transmitted to the airbag 320 through the cell structure 310. The airbag 320 absorbs the pressure on the outer shell 200, thereby reducing the compression stroke of the outer shell 200, reducing the deformation of the cavity structure 100 under stress, and improving the support provided by the cavity structure 100. Specifically, the airbag 320 is positioned at the center of the outer shell 200 in a proportionally scaled-down form, and the airbag 320 is connected to the inner wall of the outer shell 200 by an even number of symmetrically arranged cell structures 310, thereby ensuring that the airbag 320 absorbs the same pressure regardless of the direction from which the outer shell 200 is subjected to pressure. This ensures that the cavity structure 100 has the same support force in all directions. Optionally, the airbag 320 is connected to the interior of the outer shell 200 by cell structures 310 with a single rod structure 311. By symmetrically arranging six cell structures 310 in three mutually perpendicular directions, it is ensured that the airbag 320 absorbs the same pressure from the outer shell 200 in all directions.

[0041] This invention provides a support structure within a cavity structure used for cushioning in sports equipment. This support structure abuts against the outer shell to provide support for the cavity structure. Furthermore, the support structure incorporates several repeating cellular structures. By adjusting the shape and size of these cellular structures, different support structures can be obtained, thus providing varying support forces to the cavity structure under different needs and expanding the application scenarios of the sports equipment cushioning structure.

[0042] The following description, in conjunction with the accompanying drawings and specific embodiments, illustrates the situation where, in the case where the outer shell 200 is ellipsoidal, the support structure 300 is provided with a different cell structure 310.

[0043] Example 1

[0044] like Figure 1 and Figure 2 As shown, the outer shell 200 is an ellipsoidal, sealed structure, and the supporting structure 300 inside the outer shell 200 is composed of cell structures 310 configured as rod-fork structures. The cell structure 310 is formed by eight rod structures 311 forming a rod-fork structure consisting of two inverted, opposing square pyramids. Specifically, as... Figure 3 As shown, the rod structure 311 forms four edges of two regular square pyramids, which are inverted and abut each other. One end of each of the eight rod structures 311 is connected at the apex of the pyramids, and the other end is connected to the inner wall of the outer shell 200. Further, in the support structure 300, the cell structures 310 of the rod-fork structure are evenly arranged along the long axis of the outer shell 200 to provide a larger rebound space in the long axis direction, thus providing stronger support force. Stronger support is provided in the short axis direction of the outer shell 200 to reduce the rebound space, thus providing stronger support force. Optionally, the other end of each rod structure 311 in the cell structure 310 is connected to the outer shell 200 after crossing with the other end of the rod structure 311 in adjacent cell structures 310, forming a grid near the inner wall of the outer shell 200, thereby providing stable support force for the outer shell 200.

[0045] Furthermore, the outer shell 200 is filled with air at a pressure greater than 1 atm, thereby ensuring that the pressure inside the cavity structure 100 is greater than atmospheric pressure, providing the cavity structure with better support and resilience.

[0046] Example 2

[0047] like Figure 4 and Figure 5 As shown, the outer shell 200 is an ellipsoidal, sealed structure, and the supporting structure 300 inside the outer shell 200 is composed of cell structures 310 configured as hexahedrons. Each cell structure 310 is formed by nine rod structures 311 connected end-to-end to form two regular tetrahedrons with their base surfaces touching, creating a hexahedron. Specifically, as... Figure 6 As shown, the rod structure 311 forms nine edges of the hexahedral structure, and adjacent rod structures 311 are connected at the intersection of the edges of the hexahedral structure, and abut against the interior of the outer shell 200 through the vertices of the hexahedral structure. The vertices of the hexahedral structure abut against the outer shell 200, thereby providing corresponding support force to the outer shell 200 through the entire support structure 300, improving the support performance and resilience of the cavity structure 100.

[0048] Furthermore, the outer shell 200 is filled with air at a pressure greater than 1 atm, thereby ensuring that the pressure inside the cavity structure 100 is greater than atmospheric pressure, providing the cavity structure with better support and resilience.

[0049] Example 3

[0050] like Figure 7 and Figure 8As shown, the outer shell 200 is an ellipsoidal, sealed structure, and the supporting structure 300 within the outer shell 200 is composed of cell structures 310 configured as Kelvin lattice. The cell structure 310 comprises 36 rod structures, forming a Kelvin lattice structure consisting of 6 quadrilaterals and 8 hexagons. Specifically, as... Figure 9 As shown, in the Kelvin lattice structure, the quadrilaterals are adjacent to four hexagons, and the hexagons are adjacent to three quadrilaterals and three hexagons. The vertices of each quadrilateral and hexagon are abutted against the interior of the outer shell 200. Thus, when the outer shell 200 is subjected to pressure in any direction, the support structure 300 can provide the same support force, thereby improving the support performance and resilience of the cavity structure 100.

[0051] Furthermore, the outer shell 200 is filled with air at a pressure greater than 1 atm, thereby ensuring that the pressure inside the cavity structure 100 is greater than atmospheric pressure, providing the cavity structure with better support and resilience.

[0052] Example 4

[0053] like Figure 10 and Figure 11 As shown, the outer shell 200 is an ellipsoidal, sealed structure. The support structure 300 inside the outer shell 200 includes a cell structure 310 and an airbag 320, and the airbag 320 is fixed at the center of the outer shell 200 through the cell structure 310. The airbag 320 is proportionally scaled down to the shape of the outer shell 200 and positioned at the center of the outer shell 200, and is connected to the inner wall of the outer shell 200 through the cell structure 310. Specifically, the cell structure 310 is a single rod structure, and an even number of cell structures 310 are symmetrically arranged between the airbag 320 and the outer shell 200 to ensure that pressure is uniformly transmitted to the airbag 320 regardless of the direction in which the outer shell 200 is subjected to pressure.

[0054] Furthermore, the airbag 320 is an integrally formed sealed airbag. Both the outer shell 200 and the airbag 320 are filled with air at a pressure greater than 1 atm, and the air pressure in the outer shell 200 is greater than the air pressure in the airbag 320. This provides the cavity structure with better support and resilience performance, while ensuring that the airbag 320 is compressed preferentially when the cavity structure is under stress, thereby reducing the compression stroke of the outer shell 200, reducing the deformation of the cavity structure under stress, and improving the support provided by the cavity structure 100.

[0055] In one embodiment, the present invention also provides a sports equipment cushioning structure, which is composed of a plurality of cavity structures as described above. In one embodiment, the sports equipment cushioning structure is a shoe sole, such as... Figure 12 As shown, the sole has a cavity structure with higher rebound performance in the forefoot and heel areas to form an elastic zone, while the sole has a cavity structure with higher support performance in the arch, toe, and outer areas to form a support zone. This provides different support or rebound performance to the sole in specific areas to meet the actual needs during exercise.

[0056] In summary, this utility model discloses a cavity structure with internal pressure for cushioning structures in sports equipment. The cavity structure includes an outer shell and a supporting structure. The outer shell is integrally formed to surround and create a sealed cavity, while the supporting structure is located inside the outer shell and abuts against its inner wall. The supporting structure is composed of a plurality of repeating cellular structures to support the outer shell and provide support force to the cavity structure. By providing an integrally formed outer shell and a supporting structure within the outer shell, and by filling the cavity structure with high-pressure air, the cavity structure can provide the necessary elasticity or support force to further meet the needs of different sports equipment cushioning structures.

[0057] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A cavity structure with internal pressure for use in the cushioning structure of sports equipment, characterized in that, The cavity structure includes: The outer shell is integrally formed and surrounds the sealed cavity that forms the cavity structure; A support structure is disposed inside the outer shell and abuts against the inner wall of the outer shell, wherein the support structure is composed of a plurality of repeating cell structures to support the outer shell and provide support for the cavity structure; The supporting structure further includes: An airbag is disposed inside the outer shell and connected to the inner wall of the outer shell through the cellular structure.

2. The cavity structure with internal pressure for cushioning structure of sports equipment according to claim 1, characterized in that, The outer shell is filled with air at a pressure greater than 1 atm.

3. The cavity structure with internal pressure for cushioning structure of sports equipment according to claim 2, characterized in that, The outer shell is integrally formed into an ellipsoid, sphere, octahedron, or cube shape.

4. The cavity structure with internal pressure for cushioning structure of sports equipment according to claim 2, characterized in that, The cell structure includes several rod structures, which are connected end to end to form the cell structure, and the length and diameter of the rod structures are equal.

5. The cavity structure with internal pressure for cushioning structure of sports equipment according to claim 4, characterized in that, The cell structure consists of 8 rod structures, forming two inverted, opposing square pyramidal fork structures.

6. The cavity structure with internal pressure for cushioning structure of sports equipment according to claim 4, characterized in that, The cell structure consists of 9 rod structures, forming a hexahedral structure formed by the bottom faces of two regular tetrahedrons touching.

7. The cavity structure with internal pressure for cushioning structure of sports equipment according to claim 4, characterized in that, The cell structure consists of 36 rod structures, forming a Kelvin lattice structure composed of regular hexagons and squares.

8. The cavity structure with internal pressure for cushioning structure of sports equipment according to claim 1, characterized in that, The airbag is formed as an integral, sealed airbag corresponding to the shape of the outer shell, and the airbag is located at the center of the outer shell. An even number of the cell structures are symmetrically arranged between the airbag and the inner wall of the outer shell to connect the airbag to the inner wall of the outer shell.

9. A cushioning structure for sports equipment, characterized in that, It is composed of several cavity structures with internal pressure as described in any one of claims 1-8 for cushioning structures of sports equipment.

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