Pressure-resistant breathable cushioning components

Abstract

The present invention relates to a pressure-resistant and breathable buffer component, which is integrally printed by a 3D printing device, wherein the component includes a hollow portion, which is formed by arranging a plurality of hollow tetradecahedron units with the same structure, and the plurality of hollow tetradecahedron units are repeated in three directions perpendicular to each other; each of the hollow tetradecahedron units is composed of 6 square faces and 8 hexagonal faces, and each of the square faces and each of the hexagonal faces has an opening; each of the hollow tetradecahedron units located in the middle is adjacent to six outer hollow tetradecahedrons on the periphery, and two adjacent hollow decahedron units overlap at the square faces. The buffer component of this case has greatly improved pressure resistance, air permeability, and buffering performance.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a pressure-resistant and breathable buffer component manufactured by a 3D printing device. Background Art

[0002] At present, many products or parts in the civilian field have performance requirements for compression resistance and shock absorption, such as the seat cushions on high-end bicycles and the soles of high-comfort sports shoes. The seat cushion on a bicycle is the most important body support and important force position for the rider when riding a bicycle. Therefore, the quality of the seat cushion is very important for the physical and mental health of the rider. The sole of the sports shoe is the most important supporting part for the wearer to support the shoe on the ground, and its component performance is also very important for the physical and mental health of the wearer.

[0003] In the prior art, these products are mostly manufactured by injection molding and other processes. However, due to the limitations of the manufacturing process, there is still much room for improvement in meeting the above-mentioned performances.

[0004] With the rapid development of 3D printing technology, products or parts in many fields can be completed using 3D printing technology. 3D printed products can not only be individually designed to improve their fit with users, but also 3D printing technology can produce products that cannot be completed by injection molding technology, or use raw materials that cannot be used by injection molding technology. Therefore, it will become very important to develop products that can achieve pressure resistance, breathability, and cushioning performance through 3D printing technology. Summary of the invention

[0005] The object of the present invention is to provide a pressure-resistant and breathable cushioning component which has pressure-resistant, breathable and cushioning properties.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a pressure-resistant and breathable buffer component, which is integrally printed by a 3D printing device, and the component includes a hollow portion, and the hollow portion is composed of a plurality of hollow tetradecahedron units with the same structure, and the plurality of hollow tetradecahedron units are repeated along three directions perpendicular to each other; each of the hollow tetradecahedron units is composed of 6 square faces and 8 hexagonal faces, and each of the square faces and each of the hexagonal faces has an opening; each of the hollow tetradecahedron units located in the middle is adjacent to six external hollow tetradecahedrons on the periphery, and two adjacent hollow decahedron units overlap at the square faces.

[0007] In the above technical solution, preferably, the volume of each hollow tetradecahedron is 96.66 mm³-1510.3 mm³. Further preferably, the volume of each hollow tetradecahedron is 447.5 mm³.

[0008] In the above technical solution, preferably, the wall thickness of each hollow tetradecahedron is 1 mm to 2 mm. Further preferably, the wall thickness of each hollow tetradecahedron is 1.25 mm.

[0009] In the above technical solution, preferably, the area of ​​the opening located on the square surface is 1 / 4 of the area of ​​the square surface.

[0010] In the above technical solution, preferably, the opening located on the square surface is a square hole.

[0011] In the above technical solution, preferably, the area of ​​the openings on the hexagonal surface is 1 / 16 of the area of ​​the hexagonal surface.

[0012] In the above technical solution, preferably, the openings located on the hexagonal surface are triangular holes.

[0013] In the above technical solution, preferably, the pressure-resistant and breathable buffer component is integrally formed by printing a photosensitive resin material using a 3D printing device. Further preferably, the photosensitive resin material is a polyurethane elastomer.

[0014] In the above technical solution, preferably, the component further includes a solid portion, and the solid portion surrounds at least part of the periphery of the hollow portion.

[0015] The buffer component integrally printed by a 3D printing device of the present invention has greatly improved pressure resistance, air permeability and buffering performance, which will be described in detail in conjunction with examples in the following specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a pressure-resistant and breathable buffer component provided according to an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of the hollow portion structure composed of a plurality of hollow tetradecahedron units provided according to an embodiment of the present invention.

[0018] Figure 3 Schematic diagram of the structure of a single hollow tetradecahedron unit provided according to an embodiment of the present invention Figure 1 .

[0019] Figure 4 Schematic diagram of the structure of a single hollow tetradecahedron unit provided according to an embodiment of the present invention Figure 2 .

[0020] Figure 5 Schematic diagram of the structure of a single hollow tetradecahedron unit provided according to an embodiment of the present invention Figure 3 .

[0021] Figure 6Schematic diagram of the structure of a single hollow tetradecahedron unit provided according to an embodiment of the present invention Figure 4 .

[0022] Among them, 100, component; 1, hollow part; 2, solid part; 10, hollow tetradecahedron unit; 11, square face; 12, hexagonal face; 121, long side; 122, short side; 13, square opening; 14, triangular opening. DETAILED DESCRIPTION

[0023] The present invention is further described below by specific implementation methods. The following examples are specific implementation methods of the present invention.

[0024] like Figure 1 A pressure-resistant and breathable cushioning component 100 is shown, which is a bicycle seat cushion and is integrally printed by a 3D printing device. The component 100 includes three hollow parts 1 and a solid part 2, and the solid part 2 surrounds the periphery or part of the periphery of the hollow parts 2.

[0025] like Figure 2 As shown, the hollow portion 1 is composed of a plurality of hollow tetradecahedron units 10 with the same structure. When making the hollow portion 1, these 3D printing devices sequentially complete the printing of each unit 10. The plurality of hollow tetradecahedron units 10 are repeated in three directions perpendicular to each other, and two adjacent hollow tetradecahedron units 10 are overlapped by one of their faces.

[0026] like Figure 3-6 The single hollow tetradecahedron unit 10 shown, each hollow tetradecahedron unit 10 is composed of 6 square faces 11 and 8 hexagonal faces 12. Among the 6 square faces 11, each square face 11 has a square opening 13 in the middle. Each hexagonal face 12 has 3 long sides 121 and 3 short sides 122, and the 3 long sides 121 are all common sides with the adjacent square faces 11, that is, the side length of the square face 11 is the length of the long side 121. In this example, the ratio of the length of the long side 121 to the short side 122 is 2:1, and each hexagonal face 12 has a triangular opening 14 in the middle. In the same hollow tetradecahedron unit 10, there are no two adjacent square faces 11, each square face 11 is surrounded by four hexagonal faces 12, each hexagonal face 12 is surrounded by three square faces 11 and three hexagonal faces 12, the intersection edge between adjacent square faces 11 and hexagonal faces 12 is a long edge 121, and the intersection edge between two adjacent hexagonal faces 12 is a short edge 122.

[0027] In this example, each hollow tetradecahedron unit 10 located in the middle is adjacent to six outer hollow tetradecahedrons 10. Figure 2As shown, two adjacent hollow decahedron units 10 are overlapped at a square face 11 .

[0028] In order to meet the requirements of 3D printing and pressure-resistant breathable buffering, the pressure-resistant breathable buffering component 100 is made of photosensitive resin when printing. The volume of a single hollow tetradecahedron unit 10 can be set to 96.66mm³-1510.3mm³, and the wall thickness of the hollow tetradecahedron unit 10 can be set to 1mm-2mm. In the square face 11, the area of ​​the square opening 13 is 1 / 4 of the area of ​​the square face 11. In the hexagonal face 12, the area of ​​the triangular opening 14 is also 1 / 16 of the area of ​​the hexagonal face 12.

[0029] A pressure-resistant breathable buffer component with the following specific dimensions is produced: the volume of a single hollow tetradecahedron unit 10 is 447.5 mm³, the wall thickness of the hollow tetradecahedron unit 10 is 1.25 mm, the area of ​​the square opening 13 is 1 / 4 of the area of ​​the square face 11, the area of ​​the triangular opening 14 is 1 / 16 of the area of ​​the hexagonal face 12, and the wall thickness of the hollow tetradecahedron unit 10 is 1.25 mm. A pressure-resistant breathable buffer component with the above dimensions is printed using polyurethane elastomer as the printing material and a 3D printing device. After printing, the pressure resistance, buffering and other properties of the component are tested. The test results are shown in the following table:

[0030] Test items Test Results Test Standards Rebound ability test / % 35 GB / T1681-2009 Compression test / % 8 HG / T2876-2009

[0031] It can be seen that the component of this example is simple to manufacture, has excellent performance in terms of pressure resistance, air permeability and cushioning performance, and has broad prospects for use.

[0032] Although the present disclosure has been described with reference to what are currently considered to be exemplary embodiments in practice, it should be understood that the present disclosure is not limited to the disclosed embodiments, but rather, the present disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Therefore, it should be understood that the foregoing embodiments are exemplary and do not limit the present disclosure in any way.

Claims

1. A pressure-resistant and breathable buffer component, integrally printed by a 3D printing device, It is characterized in that The component includes a hollow portion, which is composed of a plurality of hollow tetradecahedron units with the same structure, and the plurality of hollow tetradecahedron units are repeated in three directions perpendicular to each other; each of the hollow tetradecahedron units is composed of 6 square faces and 8 hexagonal faces, and each of the square faces and each of the hexagonal faces has an opening; each of the hollow tetradecahedron units located in the middle is adjacent to six outer hollow tetradecahedrons on the periphery, and two adjacent hollow decahedron units overlap at the square face, the opening area on the square face is 1 / 4 of the area of ​​the square face, and the opening area on the hexagonal face is 1 / 16 of the area of ​​the hexagonal face.

2. The pressure-resistant, breathable cushioning member according to claim 1, It is characterized in that The volume of each of the hollow tetradecahedron units is 96.66 mm³-1510.3 mm³.

3. The pressure-resistant, breathable cushioning member according to claim 2, It is characterized in that The volume of each of the hollow tetradecahedron units is 447.5 mm³.

4. The pressure-resistant, breathable cushioning member according to claim 2, It is characterized in that The wall thickness of each hollow tetradecahedron is 1 mm to 2 mm.

5. The pressure-resistant, breathable cushioning member according to claim 4, It is characterized in that The wall thickness of each hollow tetradecahedron is 1.25 mm.

6. The pressure-resistant, breathable cushioning member according to claim 1, It is characterized in that The openings located on the square surface are square holes.

7. The pressure-resistant, breathable cushioning member according to claim 1, It is characterized in that The openings on the hexagonal surface are triangular holes.

8. The pressure-resistant, breathable cushioning member according to claim 1, It is characterized in that The pressure-resistant and breathable buffer component is integrally printed from a photosensitive resin material using a 3D printing device.

9. The pressure-resistant, breathable cushioning member according to claim 8, It is characterized in that The photosensitive resin material is polyurethane elastomer.

10. The pressure-resistant, breathable cushioning member according to claim 1, It is characterized in that The component also includes a solid portion, and the solid portion surrounds at least part of the periphery of the hollow portion.

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