Automobile waist cushion

Abstract

The utility model discloses an automobile waist cushion, belongs to the field of back cushions, and is used for solving the problem of how to improve the adaptation degree and the supporting performance of the waist cushion to the waist and back shape. The automobile waist rest comprises an integrally formed waist rest main body, an arc-shaped convex part is arranged in the middle of the cross section of the waist rest main body in the height direction, the arc-shaped convex part is arranged towards the waist rest main body in the direction away from the chair back, transition surfaces are arranged at the bottom and the top of the arc-shaped convex part, and the transition surfaces and the back surface of the waist rest main body form an acute angle structure; an arc-shaped concave part is arranged in the middle of the cross section of the waist rest main body in the width direction, the arc-shaped concave part is arranged towards the direction, deviating from the chair back, of the waist rest main body, and supporting surfaces are arranged at the two ends of the arc-shaped concave part in the width direction; the transition surface at the top of the waist rest main body is sunken downwards in the middle, the sunken edge is arc-shaped, the transition surface at the bottom of the waist rest main body is sunken upwards in the middle, and the sunken edge is arc-shaped.

Description

Technical Field

[0001] This application relates to the field of cushions, and more particularly to a car lumbar support. Background Technology

[0002] With the rapid development of the automotive industry and the continuous improvement of people's living standards, automobiles have gradually become an indispensable means of transportation for modern people's daily travel. When driving or riding in a car for extended periods, drivers and passengers are prone to fatigue in their lower back and back due to maintaining the same posture for too long, which can even lead to health problems such as lower back pain. To alleviate this problem, car lumbar supports have emerged as an auxiliary product and are widely used in various car seats, aiming to provide users with additional lumbar support and improve riding comfort.

[0003] However, most lumbar supports on the market today only employ a simple curved design. While this design can conform to the basic contours of the human waist to some extent, it lacks in-depth consideration of ergonomic principles and fails to achieve a precise fit with the user's back. Specifically, the top and bottom of most lumbar supports on the market do not adapt to the shape of the user's waist and back, making it difficult to provide adequate support between the user's waist and back and the seat, thus affecting the user experience.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This application provides a car lumbar support that can solve the problem of how to improve the fit and support performance of the lumbar support to the shape of the back in the prior art.

[0007] (II) Technical Solution

[0008] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0009] A car lumbar support is provided, the car lumbar support comprising: an integrally formed lumbar support body;

[0010] The lumbar support body has an arc-shaped protrusion in the middle of its cross-section in the height direction. The arc-shaped protrusion is oriented towards the lumbar support body away from the chair back. The bottom and top of the lumbar support body both have transition surfaces on the front side of the lumbar support body. The transition surfaces form an acute angle structure with the back side of the lumbar support body.

[0011] The lumbar support body has an arc-shaped recess in the middle of its cross-section in the width direction. The arc-shaped recess is oriented towards the lumbar support body in the direction away from the chair back. The arc-shaped recess has supporting surfaces at both ends in the width direction.

[0012] The transition surface at the top of the lumbar support body is concave downward in the middle, and the concave edge is arc-shaped. The transition surface at the bottom of the lumbar support body is concave upward in the middle, and the concave edge is arc-shaped.

[0013] In some embodiments, the transition surface at the top of the lumbar support body is connected to the arcuate protrusion via a smooth surface.

[0014] In some embodiments, the transition surface at the bottom of the lumbar support body forms an obtuse angle with the arcuate protrusion.

[0015] In some embodiments, the back of the lumbar support body is a flat surface.

[0016] In some embodiments, the car lumbar support further includes a back panel disposed on the back of the lumbar support body, the back panel being made of a flexible material and having a harderness than that of the lumbar support body.

[0017] In some embodiments, the back panel includes an upper plate and a lower plate arranged at an obtuse angle. The upper plate contacts the upper half of the backrest body, and the lower plate contacts the lower half of the backrest body. The upper plate and the lower plate form a protrusion at the connection point, and the protrusion is disposed away from the lumbar support body.

[0018] In some embodiments, the back panel has a support portion between the upper and lower panels, the support portion being located on the side of the back panel near the lumbar support body and configured to support the back of the lumbar support body.

[0019] In some embodiments, the obtuse angle is between 150° and 170°.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, the beneficial effects of the technical solution provided in this application include at least the following:

[0022] The lumbar support body of this application has an arc-shaped protrusion in the middle of the cross-section in the height direction. The arc-shaped protrusion is set towards the direction away from the back of the car seat to conform to the curve of the human waist and provide central support. The bottom and top of the arc-shaped protrusion are provided with transition surfaces. The transition surfaces form an acute angle structure with the back of the lumbar support body (i.e. the side away from the driver or passenger's body), which fits the shape of the transition area from the buttocks to the waist and the shape of the transition area between the back and the seat, so as to achieve a good fit between the lumbar support and the seat back while providing support. Meanwhile, the lumbar support body has an arc-shaped concave portion in the middle of its cross-section in the width direction. This concave portion faces away from the car seat back, adapting to the outward convex shape of the human lower back in the width direction. Support surfaces are provided at both ends of the arc-shaped concave portion in the width direction to provide support for both sides of the lower back. The transition surface at the top of the lumbar support body is concave downward in the middle with an arc-shaped edge, and the transition surface at the bottom of the lumbar support body is concave upward in the middle with an arc-shaped edge. This concave design helps improve the fit between the lumbar support and the human lower back, reducing lumbar pressure. In summary, the car lumbar support of this application can improve the adaptability and support performance of the lumbar support to the shape of the lower back, thereby enhancing user comfort. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a perspective view of the car lumbar support in the embodiments of this application;

[0025] Figure 2 This is a side view of the car lumbar support in the embodiment of this application;

[0026] Figure 3 This is a bottom view of the car lumbar support in the embodiments of this application;

[0027] Figure 4 This is a front view of the car lumbar support in the embodiments of this application;

[0028] Figure 5 yes Figure 4 Sectional view of section E in the middle;

[0029] Figure 6 yes Figure 4 A sectional view of section F in the middle;

[0030] Figure 7 This is a schematic diagram of the car lumbar support back panel in an embodiment of this application.

[0031] Figure label:

[0032] The lumbar support body 1, arc-shaped protrusion 11, transition surface 12, acute angle structure 13, arc-shaped concave part 14, support surface 15, first concave area 16, second concave area 17, obtuse angle structure 18;

[0033] Back plate 2, upper plate 21, lower plate 22, convex part 23, supporting part 24;

[0034] Height direction H, width direction W.

[0035] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0038] Current car lumbar supports employ a simple curved design. While this design can conform to the basic contours of the human waist to some extent, it lacks in-depth consideration of ergonomic principles, making it difficult to achieve a precise fit with the user's back. Specifically, most lumbar supports on the market today do not adapt their top and bottom to the shape of the user's waist and back, failing to provide adequate support between the user's lower back and back and the seat, thus affecting the user experience.

[0039] To address the aforementioned technical problems, this embodiment provides a car lumbar support. (See reference...) Figures 1 to 6 As shown, Figure 1 This is a perspective view of the car lumbar support in the embodiments of this application. Figure 2 This is a side view of the car lumbar support in an embodiment of this application. Figure 3 This is a bottom view of the car lumbar support in an embodiment of this application. Figure 4 This is a front view of the car lumbar support in an embodiment of this application. Figure 5 yes Figure 4 Sectional view of section E in the middle. Figure 6 yes Figure 4 A sectional view of section F in the middle.

[0040] A car lumbar support includes: a one-piece molded lumbar support body 1.

[0041] like Figure 2 and Figure 6 As shown, the lumbar support body 1 has an arc-shaped protrusion 11 in the middle of the cross section in the height direction H. The arc-shaped protrusion 11 is set in the direction away from the back of the chair, that is, towards the user's back. The bottom and top of the arc-shaped protrusion 11 are provided with transition surfaces 12. The transition surfaces 12 can smoothly transition with the arc-shaped protrusion 11 or transition at an obtuse angle. The transition surfaces 12 and the back of the lumbar support body 1 form an acute angle structure 13.

[0042] like Figure 3 and Figure 5 As shown, the lumbar support body 1 has an arc-shaped recess 14 in the middle of the cross section in the width direction W. The arc-shaped recess 14 is arranged in the direction away from the backrest of the lumbar support body 1. The arc-shaped recess 14 has support surfaces 15 at both ends in the width direction W.

[0043] like Figure 1 As shown, the transition surface 12 at the top of the waist resting body 1 is concave downward in the middle and the edge of the concave is arc-shaped, forming the first concave area 16. The transition surface 12 at the bottom of the waist resting body 1 is concave upward in the middle and the edge of the concave is arc-shaped, forming the second concave area 17.

[0044] In the manufacturing process, the lumbar support body 1 can be made using a mold forming process. First, a mold is made according to the above requirements. Soft and elastic materials, such as memory foam or sponge, are injected into the mold and molded under suitable temperature and pressure conditions.

[0045] In some embodiments of transition surface 12, such as Figure 1 and Figure 6 As shown, the transition surface 12 at the top of the lumbar support body 1 and the arc-shaped protrusion 11 are connected by a smooth surface. Unlike traditional lumbar support structures, the transition surface 12 at the top of the lumbar support body 1 and the arc-shaped protrusion 11 of this application present a smooth transition effect without obvious sharp edges or abrupt changes. When the user leans their waist against the lumbar support, this smooth connection design makes the contact between the waist and the lumbar support more natural and comfortable, avoiding the pressure on the waist caused by sharp edges or abrupt changes.

[0046] In other embodiments of the transition surface 12, such as Figure 2 and Figure 6As shown, the transition surface 12 at the bottom of the lumbar support body 1 forms an obtuse angle structure 18 with the arc-shaped protrusion 11. Taking into account the natural curvature of the human lumbar region when sitting, the obtuse angle structure 18 can better conform to the curve of the human lumbar region. At the same time, a space is formed in front of the transition surface 12 to accommodate the buttocks, allowing the transition surface 12 to support the upper part of the buttocks, providing more close support for the lumbar region, dispersing lumbar pressure, and improving sitting comfort.

[0047] In some implementations, such as Figure 2 and Figure 6 As shown, the back of the lumbar support body 1 is flat. The flat design has several advantages. On the one hand, it facilitates the installation and fixation of the lumbar support, for example, it can be easily fixed to the car seat by means of buckles, Velcro, etc. On the other hand, the flat surface also provides a stable contact surface for the subsequent connection with the back panel 2, ensuring the stability of the overall structure of the lumbar support.

[0048] To improve the structural stability and support performance of the car lumbar support, the car lumbar support also includes a back panel 2 located on the back of the lumbar support body 1, see [reference]. Figure 7 As shown, Figure 7 This is a schematic diagram of the back panel of the car lumbar support in this embodiment of the application. The back panel 2 is made of a flexible material, and its hardness is greater than that of the lumbar support body 1. For example, the back panel 2 is made of a plastic sheet with a certain degree of flexibility, and its hardness is greater than that of the body. This design of the difference in hardness is based on functional requirements. The body needs to have soft elasticity to provide comfortable support, while the back panel 2 needs a certain degree of hardness to provide structural support and stability. The back panel 2 is connected to the back of the lumbar support body 1 by means of adhesive bonding, heat fusion, or other methods.

[0049] Further, see Figure 7As shown, the backrest 2 includes an upper plate 21 and a lower plate 22 arranged at an obtuse angle. The upper plate 21 contacts the upper half of the backrest body 1, and the lower plate 22 contacts the lower half of the backrest body 1. A protrusion 23 is formed at the connection point of the upper plate 21 and the lower plate 22, and the protrusion 23 is positioned away from the lumbar support body 1. The obtuse angle structure of the upper plate 21 and the lower plate 22 can better adapt to the shape of the car seat back and forms a lever structure by supporting the seat through the protrusion 23. In actual use, when the user chooses a reclining posture, the user's back rests against the lumbar support body 1. Due to the distribution of the body's center of gravity when reclining, the pressure on the upper plate 21 is significantly greater than that on the lower plate 22. Under this uneven force, the lower plate 22 will rotate outward around the fulcrum of the protrusion 23. As the lower plate 22 rotates, it can effectively lift the lumbar support body 1 in the area corresponding to the waist. This allows the lumbar support body 1 to dynamically adjust according to the user's actual posture, providing a more fitting and comfortable support for the user's lower back, effectively reducing lumbar pressure and improving seating comfort. However, when the user is reclining, with their back resting against the lumbar support body 1, the upper plate 21 experiences greater force than the lower plate 22, allowing the lower plate 22 to rotate outward around the protrusion 23, thereby lifting the lumbar support body 1 in the corresponding area of ​​the lower back, providing better support for the user's lower back.

[0050] To improve the structural strength of the back panel 2 and better support the user in the area between the upper panel 21 and the lower panel 22, please refer to... Figure 7 As shown, the back panel 2 has a support portion 24 between the upper plate 21 and the lower plate 22. The support portion 24 is located on the side of the back panel 2 near the lumbar support body 1 and is configured to support the back of the lumbar support body 1. The support portion 24 can take the form of reinforcing ribs, protruding structures, etc. For example, when reinforcing ribs are used, multiple crisscrossing reinforcing ribs are formed between the upper plate 21 and the lower plate 22 on the side of the back panel 2 near the body through a molding process. These reinforcing ribs can increase the strength and rigidity of the back panel 2, effectively support the back of the body 1, and prevent the body 1 from deforming due to stress during use. When the body 1 is subjected to pressure from the human waist, the pressure is transmitted to the back panel 2. The support portion 24 can distribute and bear these pressures, maintain the stability of the overall structure of the lumbar support, and ensure that the lumbar support can continuously provide reliable support for the waist.

[0051] For example, the obtuse angle is between 150° and 170°.

[0052] For example, the area of ​​the back panel 2 covers the back of the lumbar support body 1, or is slightly smaller than the back of the lumbar support body 1.

[0053] To further improve the fit of the car lumbar support to the user's lower back, the main body 1 of the lumbar support is set with the following parameters:

[0054] like Figure 4As shown, the deepest numerical difference at the top of the lumbar curve is A = T8 - D1, which is the length from T8 to S1. T8 is the position of the T8 vertebra and D1 is the position of the S1 vertebra.

[0055] like Figure 4 As shown, the deepest numerical difference at the lower part of the lumbar curve is B = T12 - D1 length, which is the length from T12 to S1, where T12 is the position of the T12 vertebra.

[0056] like Figure 3 As shown, the optimal lumbar flexion height is C = B * 0.65.

[0057] like Figure 6 As shown, the edge support height D = waist circumference / 3Π (estimated muscle support strength).

[0058] The maximum height H of the cushion can be set as needed.

[0059] The above human body parameters can be selected from the average values ​​of a certain group of people, such as a certain height, weight and waist circumference, to obtain the lumbar support body 1 suitable for that group of people, or specific values ​​of a certain user can be selected to obtain a customized lumbar support body 1.

[0060] In summary, the lumbar support body 1 of the car lumbar support of this application has an arc-shaped protrusion 11 in the middle of the cross-section in the height direction H. The arc-shaped protrusion 11 is positioned facing the front of the car seat back to conform to the curve of the human waist and provide central support. The bottom and top of the arc-shaped protrusion 11 are provided with transition surfaces 12. The transition surfaces 12 and the back of the lumbar support body 1 (i.e. the side away from the driver or passenger's body) form an acute angle structure 13, which fits the shape of the transition area from the buttocks to the waist and the shape of the transition area between the back and the seat, so as to achieve a good fit between the lumbar support and the seat back while providing support. Meanwhile, the lumbar support body 1 has an arc-shaped recess 14 in the middle of its cross-section in the width direction W. The arc-shaped recess 14 is positioned facing the front of the car seat back to adapt to the outward convex shape of the human lower back in the width direction. The arc-shaped recess has support surfaces 15 at both ends in the width direction to provide support for both sides of the lower back. The transition surface 12 at the top of the lumbar support body 1 is concave downward in the middle with an arc-shaped edge, and the transition surface 12 at the bottom of the lumbar support body 1 is concave upward in the middle with an arc-shaped edge. This concave design helps to improve the fit between the lumbar support and the human waist and reduce lumbar pressure. In summary, the car lumbar support of this application can improve the adaptability and support performance of the lumbar support to the shape of the lower back, thereby improving the user's comfort.

[0061] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A car lumbar support, characterized in that, include: The lumbar support body is formed in one piece and the back panel is set on the back of the lumbar support body; The lumbar support body has an arc-shaped protrusion in the middle of its cross-section in the height direction. The arc-shaped protrusion is oriented towards the lumbar support body away from the chair back. The bottom and top of the lumbar support body both have transition surfaces on the front side of the lumbar support body. The transition surfaces form an acute angle structure with the back side of the lumbar support body. The lumbar support body has an arc-shaped recess in the middle of its cross-section in the width direction. The arc-shaped recess is oriented towards the lumbar support body in the direction away from the chair back. The arc-shaped recess has supporting surfaces at both ends in the width direction. The transition surface at the top of the lumbar support body is concave downward in the middle, and the concave edge is arc-shaped; the transition surface at the bottom of the lumbar support body is concave upward in the middle, and the concave edge is arc-shaped. The back panel includes an upper plate and a lower plate arranged at an obtuse angle. The upper plate contacts the upper half of the lumbar support body, and the lower plate contacts the lower half of the lumbar support body. The upper plate and the lower plate form a protrusion at the connection point, and the protrusion is disposed away from the lumbar support body.

2. The car lumbar support according to claim 1, characterized in that, The transition surface at the top of the lumbar support body is connected to the arc-shaped protrusion through a smooth surface, which can be a plane or an arc surface.

3. The car lumbar support according to claim 1, characterized in that, The transition surface at the bottom of the lumbar support body forms an obtuse angle with the arc-shaped protrusion.

4. The car lumbar support according to claim 1, characterized in that, The back of the lumbar support body is flat.

5. The car lumbar support according to any one of claims 1 to 4, characterized in that, The back panel is made of a flexible material and its hardness is greater than that of the lumbar support body.

6. The car lumbar support according to claim 1, characterized in that, The back panel has a support portion between the upper and lower panels. The support portion is located on the side of the back panel close to the lumbar support body and is configured to support the back of the lumbar support body.

7. The car lumbar support according to claim 1, characterized in that, The obtuse angle is between 150° and 170°.

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