3D printed lumbar support

Abstract

The application discloses a 3D printing lumbar support, which comprises a lumbar support body formed by 3D printing, wherein the lumbar support body comprises a surface texture layer arranged on a surface and an internal support structure arranged in an interior; the surface texture layer is a soft and breathable structure; the internal support structure is a hollow structure and has elasticity; the internal support structure comprises a plurality of support areas, and the plurality of support areas are used for supporting different parts of a human body, wherein the filling densities of at least two support areas are different from each other. The lumbar support can improve the breathability and the use comfort, realizes accurate support on different areas of the human body, is more suitable for the ergonomic principle, and can be customized according to individual needs, including but not limited to the overall configuration, size specifications and hardness parameters, so as to adapt to the differentiated needs of different user groups, and belongs to the technical field of lumbar supports.

Description

Technical Field

[0001] This utility model relates to the field of lumbar support technology, specifically to a 3D printed lumbar support. Background Technology

[0002] Existing lumbar supports primarily use cotton or foam as filling. Due to the inherent characteristics of these fillings and the limitations of their manufacturing processes, these lumbar supports generally suffer from poor breathability. Prolonged contact with the body can easily lead to stuffiness, dampness, and other discomfort, and may even harbor bacteria. Furthermore, some existing lumbar supports lack sufficient elasticity and do not offer zoned support for different areas of the lower back, potentially causing lumbar strain with prolonged use. Summary of the Invention

[0003] In view of the technical problems existing in the prior art, the purpose of this utility model is to provide a 3D printed lumbar support that can improve breathability and comfort, and achieve precise regional support for the human body, which is more in line with the ergonomic principle. It can also be customized according to individual needs, including but not limited to its overall structure, size specifications and hardness parameters, so as to meet the differentiated needs of different user groups.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a 3D printed lumbar support, comprising a lumbar support body made by 3D printing, the lumbar support body comprising a surface texture layer disposed on the surface and an internal support structure disposed inside; the surface texture layer is a soft and breathable structure, the internal support structure is a hollow structure and has elasticity; the internal support structure comprises multiple support areas, the multiple support areas are used to support different parts of the human body, wherein at least two support areas have different filling densities.

[0005] As a preferred embodiment, the internal support structure consists of a first support area and a second support area, with the first support area having a higher filling density than the second support area. There are two first support areas, located corresponding to the kidney areas on both sides of the human waist. The high-density first support areas are precisely positioned in the kidney areas on both sides of the body, providing stronger local support, stabilizing the muscles and soft tissues on both sides of the lumbar spine, and relieving fatigue from prolonged sitting. The low-density second support areas are used in areas requiring flexible cushioning, such as the middle of the lumbar spine, thus enhancing support stability while avoiding pressure and discomfort.

[0006] As a preferred option, the internal support structure is integrally printed, with the first support area being cylindrical with a radius of 3-5 cm, and the two first support areas spaced 5-10 cm apart. This geometry closely matches the physiological contour of the human kidney area, improving fit, while integral printing ensures a continuous and seamless structure, avoiding stress concentration, and improving manufacturing efficiency and structural reliability.

[0007] As a preferred embodiment, the fill density of the first support region is 5-30%, and the fill density of the second support region is 1-20%. This allows for a precise gradient distribution of support strength while ensuring overall lightweight design. The fill density of the second support region can also be adjusted within the range of 5-15%.

[0008] As a preferred option, both the surface texture layer and the internal support structure are three-dimensional skeleton structures composed of multiple planar structures connected by interlayers. This improves mechanical uniformity and prevents localized collapse.

[0009] As a preferred embodiment, the filling image of the first support area adopts a spiral, 3D honeycomb, intersecting straight lines, or octagonal spiral; the filling pattern of the second support area adopts a spiral, 3D honeycomb, intersecting straight lines, octagonal spiral, or square grid.

[0010] As a preferred option, the surface texture layer is filled with a square grid, Cross Zag, or Zig Zag pattern.

[0011] As a preferred option, the surface texture layer has a fill density of 10-30%. This ensures that the surface has sufficient softness to conform to the body's curves while maintaining the stability of the texture shape for long-term durability.

[0012] As a preferred embodiment, the lumbar support also includes a bottom layer, with an internal support structure located between the inner side of the surface texture layer and the bottom layer. The bottom layer is flat, while the outer surface of the surface texture layer is a continuous curved surface that is concave in the middle and convex on both sides in the transverse direction. The flat bottom layer can enhance the shape retention of the lumbar support; the shape of the surface texture layer conforms to the natural forward curvature of the human lumbar spine, which can guide correct sitting posture, distribute pressure, and reduce the load on the lumbar spine.

[0013] As a preferred option, the bottom layer filling pattern is honeycomb, concentric, intersecting straight lines, or straight lines, with a filling density of 5-20%. This ensures a flat and supportive bottom while maintaining lightweight and a certain degree of flexibility, avoiding excessive hardness that could cause discomfort.

[0014] In summary, this utility model has the following advantages.

[0015] (1) The 3D printed lumbar support of this utility model includes a low-density support area, a high-density support area, etc., which provide different levels of support for different parts of the human body and improve comfort.

[0016] (2) The 3D printed lumbar support of this utility model has a hollow structure made of high elastic material 3D printed throughout, which can provide breathability and moisture wicking at the contact part between the waist and the lumbar support, and avoid the situation of stuffiness and lack of breathability.

[0017] (3) The 3D printed lumbar support of this utility model realizes integrated partition printing, which provides different support for different parts of the human body. At the same time, the printing density of the high support area and the low support area can be adjusted to meet the needs of users with different weights. Attached Figure Description

[0018] Figure 1 This is a 3D schematic diagram of a 3D printed lumbar support.

[0019] Figure 2 for Figure 1 The image shows a cross-sectional view of a 3D-printed lumbar support.

[0020] Figure 3 for Figure 1 The image shows a bottom view of the 3D printed cushion.

[0021] Figure 4 This is a schematic diagram of a partial printed pattern.

[0022] Among them, 1 is the bottom layer, 2 is the first support area, 3 is the second support area, and 4 is the surface texture layer. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Example 1 like Figures 1-3 As shown, a 3D printed lumbar support includes a lumbar support body made by 3D printing. The lumbar support body includes a surface texture layer 4 on the surface and an internal support structure inside. The surface texture layer is a soft and breathable structure, and the internal support structure is a hollow structure with elasticity. The internal support structure includes multiple support areas, which are used to support different parts of the human body. At least two of the support areas have different filling densities.

[0025] The surface texture layer completely or partially wraps around the surface of the internal support structure, ensuring breathability while providing an excellent skin-friendly feel. This gives the area of ​​the lumbar support that contacts the body a fabric-like comfort, preventing moisture and heat buildup and significantly improving user comfort. The elastic deformation capability of the internal support structure comes from the compressible / flexible support skeleton formed by the hollow design. Through differentiated density design, it achieves precise zoned support for the lumbar spine. High-stress areas are equipped with high-density support areas to provide rigid support, while low-stress areas are equipped with low-density support areas to enhance softness and comfort. 3D printing allows for convenient and rapid customization based on these differentiated designs and individual needs, including but not limited to the overall configuration, size specifications, and hardness parameters, to adapt to the diverse needs of different user groups.

[0026] The aforementioned 3D-printed lumbar support can be used in office chairs, as well as for travel or long-distance driving, effectively relieving lower back fatigue caused by prolonged sitting. Specifically, the internal support structure consists of a first support area 2 and a second support area 3. The filling density of the first support area is greater than that of the second support area. There are two first support areas, which are located in the kidney area on both sides of the waist.

[0027] Specifically, the internal support structure is printed in one piece. The first support area is cylindrical with a radius of 3-5cm, and the two first support areas are spaced 8cm apart.

[0028] Specifically, the filling density of the first support area is 5, and the filling density of the second support area is 4%.

[0029] Specifically, both the surface texture layer and the internal support structure are three-dimensional skeleton structures composed of multiple planar structures connected by interlayers.

[0030] Specifically, the filling image of the first support area uses a spiral, but 3D honeycomb, intersecting lines, or octagonal spirals can also be used as needed; the filling pattern of the second support area uses a spiral, but 3D honeycomb, intersecting lines, octagonal spirals, or square grids can also be used as needed. For example... Figure 4 The image shown is a schematic diagram of a partial filled pattern. Figure 4 (a) is a schematic diagram of an octagonal spiral pattern, and (c) is a schematic diagram of an intersecting straight line pattern, wherein each layer is filled with parallel straight lines, and the straight lines of adjacent layers are perpendicular.

[0031] Specifically, the surface texture layer uses a Cross Zag fill pattern, but a square grid or Zig Zag can also be used depending on the requirements. The fill patterns mentioned above are the built-in fill patterns of the slicing software Bambu Studio, and can be selected according to actual needs.

[0032] Specifically, the fill density of the surface texture layer is 10%.

[0033] Specifically, the lumbar support body also includes a bottom layer 1, and an internal support structure located between the inner side of the surface texture layer and the bottom layer. The bottom layer is flat, and the outer surface of the surface texture layer is a continuous curved surface that is concave in the middle and convex on both sides in the horizontal direction.

[0034] Specifically, the bottom layer filling pattern uses a honeycomb pattern, or concentric, intersecting straight lines or straight lines can be used as needed, with a filling density of 5-20%. Figure 4 (b) is a schematic diagram of concentric patterns, and (d) is a schematic diagram of straight-line patterns.

[0035] Specifically, the main body of the lumbar support is manufactured using FDM 3D printing technology, and the printing materials are highly elastic soft materials such as TPU and TEPA.

[0036] The above design allows the low-density support area to provide softness, comfort, and partial support to the spine and surrounding areas, while the high-density support area provides stronger support to the kidney area in the lower back. At the same time, the hollow and breathable structure of the entire FDM 3D printed lumbar support can form channels for airflow and sweat wicking, thus satisfying the breathability and moisture wicking of the lower back after sitting for a long time, and avoiding the phenomenon of stuffiness and lack of breathability.

[0037] Example 2 The difference between this embodiment and Embodiment 1 is that the printing fill density of the bottom layer is 5%, the fill density of the first support area is 4%, the fill density of the second support area is 3%, and the fill density of the surface texture layer is 15%.

[0038] Example 3 The difference between this embodiment and Embodiment 1 is that the printing fill density of the bottom layer is 5%, the fill density of the first support area is 6%, the fill density of the second support area is 3%, and the fill density of the surface texture layer is 12%.

[0039] The above embodiments are preferred embodiments of the utility model, but the implementation of the utility model is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the utility model shall be considered equivalent substitutions and shall be included within the protection scope of the utility model.

Claims

1. A 3D-printed lumbar support, characterized in that: It includes a lumbar support body made by 3D printing, which includes a surface texture layer on the surface and an internal support structure inside; The surface texture layer has a soft and breathable structure, and the internal support structure is a hollow structure with elasticity. The internal support structure includes multiple support areas, which are used to support different parts of the human body. At least two of the support areas have different filling densities.

2. The 3D printed lumbar support according to claim 1, characterized in that: The internal support structure consists of a first support region and a second support region, with the first support region having a higher filling density than the second support region. There are two first support areas, located on either side of the kidney area of ​​the waist.

3. A 3D-printed lumbar support according to claim 2, characterized in that: The internal support structure is printed in one piece. The first support area is cylindrical with a radius of 3-5cm, and the two first support areas are spaced 5-10cm apart.

4. A 3D printed lumbar support according to claim 2, characterized in that: The filling density of the first support area is 5-30%, and the filling density of the second support area is 1-20%.

5. A 3D-printed lumbar support according to claim 1, characterized in that: Both the surface texture layer and the internal support structure are three-dimensional skeleton structures composed of multiple planar structures connected by interlayers.

6. A 3D-printed lumbar support according to claim 2, characterized in that: The first support area is filled with a spiral, 3D honeycomb, intersecting lines, or octagonal spiral; the second support area is filled with a spiral, 3D honeycomb, intersecting lines, octagonal spiral, or square grid.

7. A 3D printed lumbar support according to claim 1, characterized in that: The surface texture layer is filled with a square grid, Cross Zag, or Zig Zag pattern.

8. A 3D-printed lumbar support according to claim 1, characterized in that: The fill density of the surface texture layer is 10-30%.

9. A 3D-printed lumbar support according to claim 1, characterized in that: The lumbar support also includes a bottom layer, and the internal support structure is located between the inner side of the surface texture layer and the bottom layer. The bottom layer is flat, and the outer surface of the surface texture layer is a continuous curved surface that is concave in the middle and convex on both sides in the horizontal direction.

10. A 3D-printed lumbar support according to claim 9, characterized in that: The bottom layer is filled with honeycomb, concentric, intersecting straight lines or straight lines, with a fill density of 5-20%.

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