Seat back structure with segmented adjustable airbag

Abstract

The utility model relates to the technical field of seat, concretely is a seat backrest structure with segmented adjustable air bag. Including the seat board and backrest connected together, the inboard of backrest has the installation slot of longitudinal setting, the installation slot is strip structure, the air bag is embedded in the installation slot, the air bag is columnar structure, the length and width of air bag under the non -inflating state adapt the length and width of installation slot, the lower extreme of air bag is connected with air pump through valve, air bag has the restraint strip of horizontal setting for the restraint air bag inflation. The seat backrest can change shape through the air bag inflation, forms the longitudinal strip convex block in the human body spine part, closely fits the physiological curve of spine, reaches balanced spine part stress, improves the purpose of comfort.

Description

Technical Field

[0001] This utility model relates to the technical field of seating, specifically to a seat back structure with segmented adjustable airbags. Background Technology

[0002] Most existing chair backs are flat or curved. However, modern physiology and anatomy show that the human spine has a unique physiological curve. When leaning against such a flat backrest, the spine cannot receive full support, especially for patients recovering from various spinal diseases. The pressure on different parts of the spine is very uneven, affecting comfort. My other Chinese patent application, 2013208795968, discloses a "Spine and Lumbar Health Care Chair," authorized publication number CN203646833U. This chair includes a seat cushion and a backrest connected together. A chain of protrusions is provided on each side of the backrest. The chain consists of multiple longitudinally arranged protrusions and recessed partitions between adjacent protrusions. A strip-shaped rib is provided on the inner side of the backrest between the two chains, and a curved concave surface is provided between the rib and the chain. This chair features ribbed strips that conform to the human spine, perfectly matching the curve of the back to provide maximum lumbar support. This allows for even pressure and massage of the lumbar spine, relieving fatigue and discomfort caused by prolonged sitting. However, the ribbed design is non-adjustable, limiting its ability to accommodate different body shapes. Utility Model Content

[0003] To address the problems of the prior art, this utility model provides a seat back structure with segmented adjustable airbags, which can change the shape of the seat back according to the different body shapes of users, so as to better fit the curve of the human spine, thereby achieving the purpose of balancing the force on the spine and improving comfort.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] The present invention discloses a seat back structure with segmented adjustable airbags, comprising a seat board and a backrest connected together. The inner side of the backrest has a longitudinally arranged mounting groove, which is a strip-shaped structure. An airbag is embedded in the mounting groove. The airbag is a columnar structure. In the non-inflated state, the length and width of the airbag are adapted to the length and width of the mounting groove. The lower end of the airbag is connected to an air pump through a valve. The airbag has a transversely arranged restraint strip for constraining the inflation of the airbag.

[0006] With the above structural design, the seat back can change shape by inflating the airbags to form longitudinal strip-shaped protrusions at the human spine, closely conforming to the physiological curve of the spine, thereby achieving the purpose of balancing the force on the spine and improving comfort.

[0007] Preferably, the constraint strip is an annular rib provided on the inner wall of the airbag, and the inner walls of the airbag on both the upper and lower sides of the constraint strip have longitudinally arranged strip-shaped ribs, with the density of the strip-shaped ribs on the upper side of the constraint strip being greater than the density of the strip-shaped ribs on the lower side.

[0008] With the above structural design, the elastic modulus of the lower section of the airbag is greater than that of the upper section. After inflation, the lower section of the airbag has greater elastic deformation and the upper section has less elastic deformation, which better conforms to the physiological curve of the spine.

[0009] Preferably, the mounting groove is provided with a support strip, the support strip includes a side strip that fits against the inner side wall of the mounting groove and a connecting plate that fits against the bottom of the mounting groove for connecting the side strips on both sides, the constraint strip is an elastic body whose two ends are respectively fixedly connected to the two side strips, and the airbag is located between the constraint strip and the connecting plate.

[0010] With the above structural design, the two side strips can constrain the deformation of the airbag from the sides and back, so that the elastic force of the airbag deformation can be fully applied to the human spine. At the same time, the side strips also provide a fixed position for the constraint strips.

[0011] Preferably, the mounting groove is provided with a support strip, the support strip includes a side strip that fits against the inner side wall of the mounting groove and a connecting plate that fits against the bottom of the mounting groove for connecting the two side strips, the airbag is located between the two side strips, and the side of the airbag fits against the connecting plate.

[0012] With the above structural design, the support strip serves to install and limit the airbag, while the two side strips can constrain the deformation of the airbag from the side and the back, so that the elastic force of the airbag deformation can be fully applied to the human spine.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The seat backrest can change shape by inflating airbags, forming longitudinal strip-shaped protrusions along the spine to closely conform to its physiological curves, achieving balanced stress distribution and improved comfort. The elastic modulus of the airbags gradually increases from top to bottom; during inflation, the upper section of the airbag deforms less while the lower section deforms more, allowing for better conformation to the spine. Adjusting the inflation volume allows for varying levels of support, meeting the needs of different individuals. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of one embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Left view of the embodiment.

[0017] Figure 3 This is a cross-sectional view of the airbag.

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the support bar.

[0019] Figure 5 This is a schematic diagram of the structure of an airbag when it is inflated to a low pressure.

[0020] Figure 6 This is a schematic diagram of the structure of an airbag when it is inflated to a medium pressure.

[0021] Figure 7 This is a schematic diagram of the structure of an airbag when it is inflated to a high pressure. Detailed Implementation

[0022] 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, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 , Figure 2 As shown, the seat back structure with segmented adjustable airbags described in this utility model includes a seat 1 and a backrest 2 connected together. The seat 1 and backrest 2 can be an integrated structure or a hinged structure where the backrest 2 can tilt. This connection structure is existing technology and will not be described in detail here. Furthermore, depending on the application scenario, different devices can be installed under the seat 1. For example, as a car seat or massage chair, a height-adjustable and fore-and-aft adjustable base or heating and massage devices can be installed under the seat 1. When used as an office chair, support legs can be installed under the seat 1. The backrest 2 can be made of existing hard materials such as wood or plastic, or it can be a soft backrest with a rigid frame covered by textile fabric and filled with flexible materials such as foam, sponge, or cotton. The structure and manufacturing process of both the hard and soft backrests are existing technologies and will not be described in detail here.

[0024] As the technical solution of this utility model, such as Figure 1As shown, the inner side of the backrest 2 has a longitudinally arranged mounting groove 3. The mounting groove 3 is a strip-shaped structure. An airbag 4 is embedded in the mounting groove 3. The airbag 4 is a columnar structure made of elastic materials such as silicone and rubber. In the non-inflated state, the length and width of the airbag 4 are adapted to the length and width of the mounting groove 3. The lower end of the airbag 4 is connected to the air pump 5 through a valve. The airbag 4 has a horizontally arranged constraint strip 6 for constraining the expansion of the airbag 4.

[0025] When the backrest 2 is a hard backrest, the mounting groove 3 can be directly set on the backrest 2. In this case, the mounting groove 3 is a groove set on the inner side of the backrest 2. The inner wall of the groove is made of the hard material that forms the backrest 2, and its structure is stable and will not deform due to the expansion of the airbag 4. The airbag 4 is installed in the mounting groove 3. In order to stabilize the position of the airbag 4, double-sided tape can be used to stick the side of the airbag 4 to the side wall of the mounting groove 3. In the uninflated state, the airbag 4 is hidden in the mounting groove 3, so that the inner side of the backrest 2 forms a flat plane. When in use, the air pump 5 is started to inflate the airbag 4. The left, right and rear sides of the airbag 4 are constrained by the mounting groove 3 and cannot expand. The front side is unconstrained, and the airbag 4 protrudes forward, forming a longitudinal ridge on the inner side of the backrest 2. The position of this ridge corresponds to the human spine and can provide support and massage to the spine.

[0026] like Figure 3 As shown, the airbag 4 has a cylindrical, elongated structure. A valve connects to the air pump 5 at the lower opening to facilitate inflation and deflation of the airbag 4. The air pump 5 can be externally mounted or, as shown... Figure 1 As shown, an air pump chamber is provided at the lower end of the backrest 2, and the air pump 5 is embedded in the air pump chamber. Of course, the structure and working principle of the air pump 5, as well as the connection method between the air pump 5 and the power supply, can all adopt existing technologies.

[0027] In one embodiment of this utility model, the constraint strip 6 is an annular rib provided on the inner wall of the airbag 4. The inner walls of the airbag 4 on both the upper and lower sides of the constraint strip 6 have longitudinally arranged strip-shaped ribs 61. The density of the strip-shaped ribs 61 on the upper side of the constraint strip 6 is greater than that on the lower side. One constraint strip 6 can be provided, dividing the airbag 4 into upper and lower sections. The inner walls of both the upper and lower sections of the airbag 4 are provided with strip-shaped ribs 61. One end of each strip-shaped rib 61 extends to the constraint strip 6, and the other end extends to the end of the airbag 4. Multiple strip-shaped ribs 61 are evenly distributed around the inner wall of the airbag 4, but the density of the strip-shaped ribs 61 in the upper section of the airbag 4 is greater than that in the lower section.

[0028] In addition, two constraint bars 6 can be provided, which divide the airbag 4 into three sections: upper, middle and lower. Each section of the airbag 4 has strip-shaped ribs 61 on its inner wall, and the density of the strip-shaped ribs 61 gradually decreases from top to bottom.

[0029] Both the restraining strip 6 and the strip-shaped ribs 61 are made of the same material as the airbag 4 and are integrated with it. The presence of the restraining strip 6 and the strip-shaped ribs 61 provides a certain degree of constraint on the expansion of the airbag 4. The higher the density of the strip-shaped ribs 61, the greater the constraint effect on the airbag 4. The density of the strip-shaped ribs 61 gradually decreases from top to bottom, and the expansion amplitude of the lower section of the airbag 4 is greater than that of the upper section when inflated. Similarly, the width and height of the restraining strip 6 determine the magnitude of its constraint effect on the airbag 4. In actual use, the dimensions of the restraining strip 6 and the strip-shaped ribs 61, as well as their distribution density, can be reasonably adjusted according to the type and properties of the airbag 4 material and the required expansion amplitude.

[0030] In another embodiment of this utility model, a support strip 7 is provided in the mounting groove 3, such as... Figure 4 As shown, the support strip 7 includes a side strip 71 that fits against the inner wall of the mounting groove 3 and a connecting plate 72 that fits against the bottom of the mounting groove 3 to connect the side strips on both sides. The support strip 7 can be made of metal or plastic profiles with a U-shaped cross-section. The constraint strip 6 is an elastic body that is fixedly connected to the two side strips at both ends. It can be made of rubber bands or rubber strips or silicone strips with a certain degree of elasticity, and its two ends are connected to the support strip 7 by rivets. The airbag 4 is located between the constraint strip 6 and the connecting plate 72. This embodiment is mainly for the case where the backrest 2 is a soft backrest. In this case, the material constituting the backrest 2 itself has a large elasticity, and it is not possible to directly fix the airbag 4 to the elastic material. The support strip 7, which has a high degree of rigidity, can fix the position of the airbag 4 well. At the same time, it can also restrict the airbag 4 to expand only forward when it inflates, while the left and right sides and the rear are restricted by the support strip 7. Of course, in actual use, in addition to embedding the support strip 7 into the elastic material constituting the backrest 2, it is also necessary to use screws or cable ties to fix it to the frame of the backrest 2 to prevent the support strip 7 from shifting. The structure and position of the frame in the backrest 2, as well as the method of fixing the support bar 7 to the frame, are existing known technologies and will not be described in detail here.

[0031] In another embodiment of this utility model, a support strip 7 is provided in the mounting groove 3. The support strip 7 includes a side strip 71 that fits against the inner wall of the mounting groove 3 and a connecting plate 72 that fits against the bottom of the mounting groove 3 for connecting the side strips on both sides. The airbag 4 is located between the two side strips 71, and the side of the airbag 4 fits against the connecting plate 72. In this embodiment, the following is used: Figure 3 The airbag 4, which has a built-in annular constraint strip 6 and strip-shaped ribs 61, does not require an additional constraint strip to be installed on the support strip 7. The airbag 4 can simply be embedded into the U-shaped support strip 7. To fix the position of the airbag 4, double-sided adhesive can be applied to the contact area between the airbag 4 and the connecting plate 72 to bond them together.

[0032] When using, such as Figure 1 As shown, when not inflated, the airbag 4 is hidden in the mounting groove 3, making the inner side of the backrest 2 a flat plane. A seat cover is fitted over the backrest 2, so the mounting groove 3 and the airbag 4 are not visually noticeable. Figure 5 As shown, after the air pump 5 is turned on to inflate the airbag 4, the airbag 4 expands forward. However, due to the restraining effect of the restraining strip 6 and the strip-shaped rib 61, the expansion amplitude is the largest at the bottom of the airbag 4, and the expansion amplitude decreases as it rises. Figure 6 , Figure 7 As shown, continue inflating airbag 4. Airbag 4 expands as a whole, but still maintains a state where the lower end expands more and the upper end expands less. In actual use, the control circuit of air pump 5 can be set to two or three levels as needed, allowing users to control the amount of air pump 5 to inflate airbag 4 according to their own needs, achieving the desired effect. Figure 5 , Figure 6 , Figure 7 The shape varies with different expansion ranges. When a seat cover is fitted over the backrest 2, the airbag 4 can lift the seat cover after inflation, forming a protruding part on the backrest 2.

[0033] In the above figures, in order to clearly show the appearance of airbag 4, except... Figure 3 The accompanying drawings, except for those shown elsewhere, do not depict the airbag 4 in cross-section; only section lines are used to represent the outer contour shape of the airbag 4 in different states. However, this does not prevent those skilled in the art from understanding the airbag 4 as a thin-walled, hollow structure. Meanwhile, except for... Figure 3 In the accompanying drawings other than those shown, the constraint strips 6 connected to the support strips 7 at both ends are schematically represented, only indicating the relative positional relationship between the constraint strips 6 and the support strips 7 or the airbags 4. The connection structure and connection method between the constraint strips 6 and the support strips 7 are known technologies.

[0034] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A seat back structure with a segmented adjustable airbag, comprising a seat pan (1) and a backrest (2) connected together, characterized in that: The inner side of the backrest (2) has a longitudinally arranged mounting groove (3). The mounting groove (3) is a strip structure. An airbag (4) is embedded in the mounting groove (3). The airbag (4) is a column structure. In the non-inflated state, the length and width of the airbag (4) are adapted to the length and width of the mounting groove (3). The lower end of the airbag (4) is connected to the air pump (5) through a valve. The airbag (4) has a horizontally arranged constraint strip (6) for constraining the expansion of the airbag (4).

2. The seat back structure with a segmented adjustable airbag according to claim 1, characterized in that: The constraint strip (6) is an annular rib set on the inner wall of the airbag (4). The upper and lower sides of the constraint strip (6) have longitudinally arranged strip ribs (61) on the inner wall of the airbag (4). The density of the strip ribs (61) on the upper side of the constraint strip (6) is greater than that on the lower side.

3. The seat back structure with a segmented adjustable airbag according to claim 1, characterized in that: The mounting groove (3) is provided with a support strip (7). The support strip (7) includes a side strip (71) that fits against the inner wall of the mounting groove (3) and a connecting plate (72) that fits against the bottom of the mounting groove (3) for connecting the side strips on both sides. The constraint strip (6) is an elastic body that is fixedly connected to the two side strips at both ends. The airbag (4) is located between the constraint strip (6) and the connecting plate (72).

4. The seat back structure with a segmented adjustable airbag according to claim 2, characterized in that: The mounting groove (3) is provided with a support strip (7). The support strip (7) includes a side strip (71) that fits against the inner wall of the mounting groove (3) and a connecting plate (72) that fits against the bottom of the mounting groove (3) to connect the side strips on both sides. The airbag (4) is located between the two side strips (71), and the side of the airbag (4) fits against the connecting plate (72).

Images