Air cushion pad and mattress using same

Abstract

The present invention relates to an air cushion pad and a mattress using same. Existing air cushion pads involve cumbersome assembly and have poor airtightness. The present invention comprises air cushion strips that are arranged closely in a front-rear direction, wherein each air cushion strip is provided with an air passage channel; a connecting platform is provided at the end of the air passage channel; a flat top plate is provided on the top of the connecting platform; an upward-opening air vent is provided in the middle of the top plate; and a three-way pipe fitting is provided on the air vent; the three-way pipe fitting comprises a lower pipe opening provided with an abutting piece, the abutting piece closely abutting against the top plate, enabling the air vent to align with and connect to the lower pipe opening and providing communication with the outside through the three-way pipe fitting. The connecting platform is provided at the end of the air passage channel, the top plate provided with the air vent is provided on the connecting platform, and the top plate has a flat surface against which the abutting piece can abut smoothly; after ensuring that the abutting piece and the top plate are closely abutted against each other, the abutting piece and the top plate are then fixed by means of welding, ensuring that the lower pipe opening is in sealed communication with the air vent, and thus preventing air leakage and improving the user experience.

Description

An airbag cushion and a mattress using it Technical Field

[0001] This invention relates to the field of bedding, and more specifically to an air cushion and a mattress using the same. Background Technology

[0002] Existing mattresses often feature adjustable airbag pads, which consist of tightly arranged airbag strips arranged front to back. These strips are joined together to form airbag pads of any size, facilitating mattress filling. Each airbag strip has a T-joint, ensuring that adjacent airbag strips can be connected to maintain pressure balance within the strips. This also allows the airbag strips to connect to an external controller for pressure adjustment, enabling firmness adjustment. The T-joints are vertically positioned, with the lower end fitting tightly against the periphery of the air vent. However, because the periphery of the air vent is non-planar, the fitting may not fit perfectly, leading to gaps and a lack of proper sealing between the air vent and the lower end. This results in a shortened lifespan of the airbag pad and negatively impacts the user experience.

[0003] In addition, the existing air passage is formed by connecting the tubes extending outward from the bladder assembly. The tubes are formed during the assembly and processing of the bladder assembly. The corresponding tubes of adjacent bladder assemblies are sealed and fixed by direct welding or by setting connecting pipes. This not only affects production efficiency due to the complicated processing, but also makes it easy for damage and air leakage to occur due to the large number of welding areas, which affects the user experience. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an airbag cushion and a mattress using the same. A connecting platform is provided at the end of the air passage, and a top plate with an air vent is provided on the connecting platform. The top plate allows the patch to fit flatly, ensuring a sealed connection between the air vent and the lower tube opening, thereby improving the user experience.

[0005] This invention is achieved through the following method: an airbag cushion includes airbag strips arranged closely in a front-to-back direction. Each airbag strip has an air passageway, and the end of each air passageway has a connecting platform. The top of the connecting platform has a flat top plate, and the top plate has an upward-facing exposed air vent in the center. A T-joint is provided on the air vent, and the T-joint includes a lower tube opening with a patch. The patch is tightly fitted to the top plate so that the air vent and the lower tube opening are aligned and connected, and the air vent is connected to the outside through the T-joint. The connecting platform at the end of the air passageway, and the top plate with the air vent on the connecting platform, have a flat surface for the patch to fit smoothly. After the patch and the top plate are tightly fitted, they are fixed by welding to ensure a sealed connection between the lower tube opening and the air vent, preventing air leakage and improving the user experience.

[0006] Preferably, the connecting platform is formed by expanding the end of the gas passage, and the top plate is formed around the gas port. The patch is matched and attached to the top plate and sealed by circumferential welding. The connecting platform and the gas passage are an integral structure, ensuring a sealed connection between them and preventing air leakage.

[0007] Preferably, the vertical projection of the patch falls completely into the top plate, ensuring that the patch can be completely attached to the top plate. This not only facilitates the welding operation but also improves the sealing reliability by increasing the welding area.

[0008] Preferably, a radially slit is provided around the air vent. This slit increases the air vent area, allowing the patch to pass through the vent and adhere to the bottom surface of the top plate for secure bonding. The slit facilitates the patch's passage through the air vent, ensuring the patch can be bonded and welded to the bottom surface of the top plate.

[0009] Preferably, the cut is in the shape of a straight line and is symmetrically arranged around the axis of the air port. The straight line shape of the cut, which passes through the center of the air port, ensures that there is a balanced deformation range on both sides of the air port, thus facilitating the passage of the patch placed around the lower pipe opening through the air port. It also facilitates the closure and repositioning of the cut, and facilitates the welding and sealing of the patch.

[0010] Preferably, the top plate is rectangular, and the cut is set along the length of the top plate. The vertical projection of the cut falls completely within the patch, and the horizontal distance between any section of the cut and the mating edge is not less than 5mm. Setting the cut along the length of the top plate ensures that the distance between any section of the cut and the edge of the patch is not less than 5mm. This improves sealing reliability by increasing the width of the welding area and by providing a continuous welding area around the cut and the vent to guarantee sealing reliability.

[0011] Preferably, the tee fitting is T-shaped, including two front and rear facing upper pipe openings. The corresponding upper pipe openings of adjacent tee fittings are axially aligned and connected by a sleeve for sealing. The end of the sleeve is tightly fitted onto the upper pipe opening and welded for sealing. This facilitates processing, ensures that the corresponding upper pipe openings are connected by a sleeve seal, and makes the axes of the sleeve and the upper pipe opening coincide and be arranged in a straight line, effectively reducing wind resistance and ensuring smooth airflow.

[0012] Preferably, the airbag strip includes a long strip-shaped airway platform and airbag assemblies arranged linearly along the length of the airway platform. The airway channels are disposed on the airway platform and communicate with each airbag assembly along the way. The airway platform is used to fix the airbag assemblies, ensuring that the relative positions of the airbag assemblies are fixed, to lay the airway channels and connect the airbag assemblies in series, ensuring that the air pressure inside each airbag assembly remains constant and can be adjusted synchronously, and the leading and trailing edges of the airway platform can be used to achieve stacking and welding fixation between adjacent airbag strips.

[0013] Preferably, the gas path platform includes an upper plate and a lower plate, which are vertically stacked and partially welded together to form the gas path channel and connecting platform. The upper and lower plates are independently processed and then stacked and bonded to form a gas path platform with a gas path channel. This facilitates the installation of the tee fittings before the gas path platform is formed, and also facilitates stacking and assembly, improving assembly efficiency.

[0014] Preferably, the airbag strip includes linearly arranged airbag assemblies. The air passage is elongated and tubular. Vent holes are provided in the sections of the air passage within each airbag assembly. The air passage connects all the airbag assemblies in series, allowing the inner cavities of each airbag assembly to communicate through the air passage. The air passage sequentially passes through each airbag assembly to form a straight airbag strip. Vent holes are provided in the sections of the air passage within each airbag assembly, enabling communication between the airbag assemblies within the airbag strip. The air passage connects all the airbag assemblies in series, forming an air passage that requires no welding assembly. This simplifies processing, improves production efficiency, and ensures good sealing between adjacent airbag assemblies by using a single air passage, reducing the risk of leakage and improving the user experience.

[0015] Preferably, the capsule assembly includes an upper cover and a lower cover. The upper and lower covers vertically clamp the air passage and enclose it to form an inner cavity isolated from the outside. The inner cavity is connected to the outside through corresponding vents, allowing the capsule assembly to extend and retract vertically and adjust its support. The upper and lower covers are independently processed and assembled to form the capsule assembly. The upper and lower covers are stacked, clamping the air passage and welded together. This ensures that the upper and lower covers can form a sealed inner cavity, and also ensures that the inner cavity is connected to the air passage through the vents, so that the cavities connected in series in the air passage can communicate with each other, facilitating synchronous adjustment of air pressure.

[0016] Preferably, the upper and lower cover portions are symmetrical in structure, each containing an upper and lower groove facing each other. The upper and lower cover portions are vertically aligned, stacked, and welded together to form the inner cavity. The symmetrical arrangement and identical structure of the upper and lower cover portions facilitates mass production and eliminates the need for differentiation during assembly, preventing assembly errors and effectively improving assembly efficiency. Once installed, the openings of the upper and lower grooves align and connect to form the inner cavity.

[0017] Preferably, the upper groove has upper notches on both sides of its opening, and the lower groove has lower notches on both sides of its opening. The upper and lower notches are aligned and overlapped to tightly wrap around the gas passage, so that the gas passage, the upper notches, and the lower notches are welded together to form a seal. The upper and lower notches are vertically aligned and clamp the gas passage, ensuring that the gas passage can pass smoothly through the capsule assembly and effectively eliminating gaps between the capsule assembly and the gas passage, facilitating a sealed connection through welding.

[0018] Preferably, the periphery of the openings of the upper and lower grooves are both flat, so that the bottom surface of the upper cover and the top surface of the lower cover fit tightly together. This improves the sealing performance by eliminating the gap between the openings of the upper and lower grooves and facilitates welding operations.

[0019] Preferably, the upper and lower grooves have different depths. By setting upper and lower grooves of different depths, differentiated bladder components can be obtained, allowing the bladder components to be adjusted and replaced according to usage requirements. This, in turn, adjusts the placement of the air passage on the bladder component, improving the user experience.

[0020] Preferably, the vent is located in the middle of the air passage section of the inner cavity, and the vent is located in the middle of the inner cavity to ensure that the air pressure in the inner cavity can be precisely adjusted.

[0021] Preferably, there are two vents, one facing the upper slot and the other facing the lower slot, to ensure that the air pressure in the upper and lower slots can be precisely adjusted.

[0022] Preferably, the side of the capsule assembly is provided with an abutment portion extending along the direction of the air passage. Adjacent capsule assemblies are positioned by abutting each other through corresponding abutment portions, thereby fixing the relative positions between adjacent capsule assemblies. The abutment portion is integrally formed with the capsule assembly, which facilitates manufacturing and ensures uniformity in structure and size of the abutment portion, improving positioning accuracy. Adjacent capsule assemblies are positioned by abutting each other through the abutment portion, ensuring a constant distance between adjacent capsule assemblies and facilitating rapid assembly.

[0023] Preferably, the end of the air passage is exposed at the end of the airbag strip and forms an air port that communicates with the outside. The air passage is connected to the outside through the air port, which facilitates the connection between adjacent airbag strips to achieve synchronous air pressure adjustment, and also facilitates the connection between the airbag strip and an external air source to achieve precise air pressure adjustment within each airbag component.

[0024] A mattress using the aforementioned airbag pad includes a mattress body, the mattress body including an airbag pad and a limiting block that clamps and encloses the airbag pad. The limiting block serves to clamp, position, and protect the airbag pad, ensuring that the airbag pad is in a preset position and its firmness can be adjusted by inflation and deflation, thereby improving the comfort of the mattress.

[0025] The beneficial effects of this invention are as follows: A connecting platform is provided at the end of the air passage, and a top plate with an air port is provided on the connecting platform. The top plate has a flat surface for the patch to be smoothly attached, ensuring that the patch and the top plate are tightly attached and then fixed by welding. This ensures a sealed connection between the lower pipe and the air port, preventing air leakage and improving the user experience. Furthermore, the air passage sequentially passes through each bladder assembly to form a straight airbag strip. Ventilation holes are provided in the sections of the air passage within each bladder assembly, allowing the bladder assemblies within the airbag strip to be connected through the air passage. The air passage connects the bladder assemblies in series, forming an air passage that does not require welding assembly. This simplifies processing operations, improves production efficiency, and uses a single air passage, ensuring good sealing in the sections between adjacent bladder assemblies, reducing the risk of air leakage and improving the user experience. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the disassembled structure of the airbag strip described in Embodiment 1;

[0027] Figure 2 is a partial cross-sectional view of the airbag strip described in Embodiment 1;

[0028] Figure 3 is a cross-sectional schematic diagram of the assembly structure of the connecting platform described in Embodiment 1;

[0029] Figure 4 is a partial structural schematic diagram of the airbag cushion described in Embodiment 1;

[0030] Figure 5 is a structural schematic diagram of the tee fitting described in Embodiment 1;

[0031] Figure 6 is a cross-sectional view of the airbag strip described in Embodiment 2;

[0032] Figure 7 is a schematic diagram of the structure of the airbag strip described in Embodiment 2;

[0033] Figure 8 is a schematic diagram of the disassembled structure of the airbag strip described in Embodiment 2;

[0034] Figure 9 is a schematic diagram of the structure of the airbag cushion described in Embodiment 2;

[0035] Figure 10 is a schematic diagram of the disassembled structure of the mattress described in Embodiment 3;

[0036] Figure 11 is a schematic diagram of the assembly structure of the airbag cushion and the limiting block described in Embodiment 3;

[0037] In the diagram: 1. Airbag strip, 2. Air passage, 3. Connecting platform, 4. Top plate, 5. Air inlet, 6. T-fitting, 7. Patch, 8. Lower tube opening, 9. Air passage platform, 10. Cutout, 11. Upper tube opening, 12. Sleeve, 13. Airbag assembly, 14. Airbag pad, 15. Limiting block, 16. Vent hole, 17. Upper cover, 18. Lower cover, 19. Upper groove, 20. Lower groove, 21. Upper notch, 22. Lower notch, 23. Contact part. Embodiments of the present invention

[0038] The essential features of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1:

[0040] This embodiment provides an airbag cushion.

[0041] As shown in Figures 1 and 2, an airbag cushion 14 includes airbag strips 1 arranged closely in a front-to-back direction. Each airbag strip 1 has an air passageway 2. A connecting platform 3 is located at the end of each air passageway 2. A flat top plate 4 is located on the top of the connecting platform 3. An upward-facing air vent 5 is opened in the center of the top plate 4. A T-joint 6 is provided on the air vent 5. The T-joint 6 includes a lower pipe opening 8 with a patch 7. The patch 7 is tightly fitted to the top plate 4, aligning and connecting the air vent 5 with the lower pipe opening 8, and connecting to the outside environment through the T-joint 6. The connecting platform 3 at the end of the air passageway 2, and the top plate 4 with the air vent 5 on the connecting platform 3, provide a flat surface for the patch 7 to be smoothly fitted. After the patch 7 and the top plate 4 are tightly fitted, they are fixed by welding to ensure a sealed connection between the lower pipe opening 8 and the air vent 5, preventing air leakage and improving the user experience.

[0042] In this embodiment, the connecting platform 3 is formed by the expansion of the end of the gas passage 2, and the top plate 4 is formed around the gas port 5. The patch 7 is matched and attached to the top plate 4 and sealed by circumferential welding. Specifically, the gas passage platform 9 includes an upper plate and a lower plate. The upper plate and the lower plate are stacked vertically and partially welded together to form the gas passage 2 and the connecting platform 3. The gas port 5 is disposed on the upper plate. The upper plate forms a top plate 4 with a flat surface in the peripheral area of ​​the gas port 5. The upper plate and the lower plate are stacked and welded together to form the gas passage 2 with the connecting platform 3.

[0043] In this embodiment, a patch 7 is formed by extending outwards at the port of the lower pipe 8 (as shown in Figure 5). The patch 7 is welded and bonded to the periphery of the air port 5 to align and connect the lower pipe 8 and the air port 5. The patch 7 and the lower pipe 8 are integrally formed. The patch 7 is formed by radially extending outwards from the periphery of the lower pipe 8 to ensure a sealed connection between the patch 7 and the periphery of the lower pipe 8. A radially opened slit 10 is provided around the periphery of the air port 5. This ensures that the area of ​​the air port 5 is increased when the slit 10 is opened under force, allowing the patch 7 to pass smoothly through the air port 5 and adhere and fix to the bottom surface of the top plate 4. It also ensures that the slit 10 can close and reset, achieving a seal with the patch 7 blocking it.

[0044] During assembly, firstly, the lower port 8 of the tee fitting 6 passes through the air port 5 from top to bottom. The patch 7 is deformed under pressure and shrinks towards the axis of the air port 5. The cut 10 will open due to the push of the patch 7, enlarging the air port 5. This allows the shrinking patch 7 to pass through the air port 5 through the open cut 10 and be exposed below the top plate 4 under the drive of the lower port 8. Then, the patch 7 unfolds and resets, and fits against the bottom surface of the top plate 4 (as shown in Figure 3). The patch 7 and the bottom surface of the top plate 4 are stacked on each other and welded to fix them. The patch 7 completely covers the cut 10, so that the lower port 8 and the air port 5 are sealed and connected. Finally, the upper and lower plates are stacked vertically and partially welded to form the air passage 2. The upper and lower plates are stacked, and a welding area is set along the periphery of the air passage 2 so that the upper and lower plates are welded and fixed to form the air passage 2 that meets the airflow delivery requirements and the connecting platform 3 that is sealed and connected to the lower port 8.

[0045] In this embodiment, the vertical projection of the patch 7 falls completely into the top plate 4, ensuring that the patch 7 can be completely attached to the top plate 4, effectively increasing the contact area between the patch 7 and the top plate 4, thereby obtaining a welding area continuously arranged around the air port 5 and the cut 10.

[0046] In this embodiment, the cut 10 is in the shape of a straight line and is symmetrically arranged around the axis of the air inlet 5. The top plate 4 is rectangular, and the cut 10 is arranged along the length of the top plate 4. The vertical projection of the cut 10 falls completely within the patch 7, and the horizontal distance between any segment of the cut 10 and the bonding edge is not less than 5mm. The cut 10 is arranged along the length of the top plate 4, utilizing the length of the top plate 4 to accommodate the cut 10, and utilizing the width of the top plate 4 to ensure that the minimum distance between each segment of the cut 10 and the periphery of the patch 7 is not less than 5mm. By increasing the width of the welding area, the sealing reliability is improved, and air leakage is prevented.

[0047] In this embodiment, the T-shaped three-way fitting 6 includes two front-to-back upper pipe openings 11. The corresponding upper pipe openings 11 of adjacent three-way fittings 6 are axially aligned and sealed together by a sleeve 12 (as shown in Figure 4). The three-way fitting 6 is vertically positioned so that its projection falls completely within the airbag strip 1 and is positioned close to the airbag assembly 13. When the user sits on the edge of the airbag pad 14, the airbag assembly 13 supports the user, effectively preventing the main channel from being compressed and deformed by the user's pressure, ensuring unobstructed airflow. Furthermore, the axes of the upper pipe openings 11 and the sleeve 12 are on the same straight line, ensuring that the main channel formed by the connection of the upper pipe openings 11 and the sleeve 12 is straight, effectively reducing wind resistance and facilitating assembly. The inner diameter of the sleeve 12 is the same as the outer diameter of the upper pipe opening 11. The end of the sleeve 12 is fitted onto the upper pipe opening 11 and sealed by circumferential welding. The two ends of the sleeve 12 are fitted onto the corresponding upper pipe openings 11 so that the corresponding upper pipe openings 11 of the adjacent tee fittings 6 are sealed and connected, thereby ensuring that the adjacent tee fittings 6 are connected to each other.

[0048] In this embodiment, the airbag strip 1 includes a plurality of linearly arranged airbag components 13. The airbag components 13 are connected by air passages 2 laid along the length of the airbag strip 1, and the ends of the air passages 2 extend outward to form the tee fittings 6. The airbag components 13 are arranged in a straight line at equal intervals to ensure that the distance between the airbag components 13 is the same, thereby facilitating the assembly of the airbag strips 1 to form an airbag pad 14 with matrix-shaped airbag components 13, which improves the comfort of use and facilitates assembly. Adjacent airbag components 13 are connected by air passages 2, so that the air pressure in each airbag component 13 on the same airbag strip 1 can be adjusted synchronously. Adjacent airbag strips 1 are connected by adjacent tee fittings 6, so that the air pressure in adjacent airbag strips 1 can be adjusted synchronously. By connecting the airbag strips 1 of each section on the airbag pad 14 in series, the air pressure of the airbag strip 1 in each section can be adjusted synchronously, which simplifies the air passage structure and facilitates precise control and use.

[0049] Example 2:

[0050] Compared to Embodiment 1, this embodiment provides a mattress.

[0051] As shown in Figures 6 and 7, an airbag pad 14 includes an airbag strip 1 comprising linearly arranged airbag components 13 and air passages 2 connecting each airbag component 13. Each section of the air passage 2 within each airbag component 13 has ventilation holes 16, allowing the inner cavities of each airbag component 13 to be connected via the air passage 2. The air passage 2 sequentially passes through each airbag component 13 to form a straight airbag strip 1. Vents 16 are provided in each section of the air passage 2 within each airbag component 13, enabling communication between each airbag component 13 within the airbag strip 1. The air passage 2 connects each airbag component 13, forming an air passage 2 that requires no welding assembly. This simplifies processing, improves production efficiency, and ensures good sealing between adjacent airbag components 13 by using a single air passage 2, reducing the risk of leakage and improving the user experience.

[0052] In this embodiment, the capsule assembly 13 includes an upper cover 17 and a lower cover 18 (as shown in FIG8). The upper cover 17 and the lower cover 18 vertically clamp the air passage 2 and enclose it to form an inner cavity isolated from the outside. The inner cavity is connected to the outside through a corresponding vent 16, so that the capsule assembly 13 can be vertically extended and retracted and its support adjusted. When processing the airbag strip 1, firstly, an air passage 2 matching the length of the airbag strip 1 is cut, and the ventilation hole 16 is opened on the air passage 2; then, the upper cover 17 and the lower cover 18 are vertically stacked and clamped on the air passage 2, so that the corresponding ventilation hole 16 on the air passage 2 is wrapped in the inner cavity formed by the upper cover 17 and the lower cover 18; then, the stacked area between the upper cover 17, the lower cover 18 and the air passage 2 is welded to form a sealed welded area; finally, the airbag assembly 13 is arranged and installed along the air passage 2 so that the air passage 2 is connected to the inner cavity of each airbag assembly 13 through the ventilation hole 16.

[0053] After installation, the air inlet 5 at the end of the air passage 2 is exposed at the end of the airbag strip 1. Each vent 16 on the air passage 2 is enclosed in the inner cavity of the corresponding airbag assembly 13, so that each airbag assembly 13 in the airbag strip 1 is connected to the air passage 2 through the vent 16, thereby allowing each airbag assembly 13 on the airbag strip 1 to be connected to the external air passage 2 through the air passage 2, ensuring that the air pressure of each airbag assembly 13 in the airbag strip 1 can be synchronously adjusted.

[0054] In this embodiment, the end of the air passage 2 is exposed at the end of the airbag strip 1, forming an air port 5 that communicates with the outside. The airbag strip 1 is connected to an external air source through the air port 5, allowing the air pressure of the airbag strip 1 to be regulated and controlled through inflation and deflation. In use, the air ports 5 of adjacent airbag strips 1 can be connected by pipes, allowing the air pressure inside adjacent airbag strips 1 to be adjusted synchronously, thereby allowing the softness and hardness of interconnected local areas or the whole within the airbag pad 14 to be adjusted synchronously. One end of the air passage 2 is located at one end of the airbag strip 1 and forms an air port 5, while the other end is located at the other end of the airbag strip 1 and is blocked, ensuring that the air passage 2 can only communicate with the outside through the air port 5.

[0055] In this embodiment, the upper cover 17 and the lower cover 18 are symmetrical, making them identical. This facilitates mass production and eliminates the need to distinguish between components during assembly, allowing for rapid assembly. Furthermore, the upper groove 19 and the lower groove 20 have different depths, allowing adjustment of the air passage 2's placement on the capsule assembly 13. For example, the air passage 2 can be positioned at the bottom of the capsule assembly 13, ensuring that the air passage 2 is not compressed or blocked while maintaining the height adjustment range of the capsule assembly 13. This also allows for the assembly of various capsule assemblies 13 to meet different usage requirements, effectively expanding the applicability of the series air passage 2 structure. All of these should be considered specific implementations of this embodiment.

[0056] In this embodiment, both the upper cover 17 and the lower cover 18 are provided with opposing upper grooves 19 and lower grooves 20. The upper cover 17 and the lower cover 18 are vertically aligned and stacked, and then welded and sealed so that the upper grooves 19 and lower grooves 20 enclose and form the inner cavity. The welding method is ultrasonic welding or high-frequency welding to ensure good sealing performance at the weld.

[0057] In this embodiment, the upper groove 19 has upper notches 21 on both sides of its opening periphery, and the lower groove 20 has lower notches 22 on both sides of its opening periphery. The upper notches 21 and lower notches 22 are aligned and stacked to tightly wrap around the air passage 2, so that the air passage 2, the upper notches 21, and the lower notches 22 are welded and sealed. There are two upper notches 21, and they are symmetrically arranged with the axis of the upper cover 17 as the center. The cross-sectional profile of the upper notches 21 is arc-shaped and corresponds to the outer diameter of the air passage 2, ensuring that the outer wall of the air passage 2 can match and fit the inner wall of the upper notches 21. This facilitates welding and sealing, and also prevents the air passage 2 from being squeezed and deformed between the upper cover notch and the air passage 2, ensuring that the cross-sectional area of ​​the air passage 2 meets the airflow requirements. The lower notches 22 have the same structure as the upper notches 21 and can also play a role in sealing the connection and preventing the air passage 2 from being squeezed.

[0058] In this embodiment, the periphery of the openings of the upper groove 19 and the lower groove 20 are both flat, so that the bottom surface of the upper cover 17 and the top surface of the lower cover 18 fit tightly together. The cross-sectional contours of the upper notch 21 and the lower notch 22 are semi-circular, so that when the air passage 2 is clamped in the upper notch 21 and the lower notch 22, the periphery of the openings of the upper groove 19 and the lower groove 20 can match and fit together, thereby facilitating welding and sealing.

[0059] In this embodiment, the vent 16 is located in the middle of the inner cavity section of the air passage 2. There are two vents 16, which are respectively opened towards the upper groove 19 and the lower groove 20. The vent 16 is located in the middle of the inner cavity to ensure that the vent 16 can deliver airflow to each area of ​​the inner cavity, thereby ensuring that the air pressure in each area of ​​the inner cavity can be adjusted synchronously, and preventing the bladder assembly 13 from tilting horizontally during expansion and contraction due to asynchronous inflation and deflation in each area of ​​the inner cavity.

[0060] In this embodiment, the side of the capsule assembly 13 is provided with an abutment portion 23 extending along the direction of the air passage 2. Adjacent capsule assemblies 13 are positioned by abutting each other through the corresponding abutment portions 23, thereby fixing the relative position between adjacent capsule assemblies 13. The bottom surface of the upper cover portion 17 and the top surface of the lower cover portion 18 extend to both sides to form abutment portions 23, and the abutment portions 23 extend along the direction of the air passage 2. This not only increases the axial length of the upper notch 21 and the lower notch 22, thereby increasing the width of the welding area to improve sealing reliability, but also enables the abutment portion 23 to achieve contact limitation after the capsule assembly 13 clamps the air passage 2, ensuring that the distance between adjacent capsule assemblies 13 is the same.

[0061] In this embodiment, adjacent airbag strips 1 are fixed by overlapping and welding their corresponding front and rear edges to ensure that adjacent airbag strips 1 have the same spacing (as shown in Figure 9), thus ensuring that the airbag pad 14 has a matrix arrangement of airbag components 13.

[0062] The other structures and effects of the airbag cushion 14 described in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

[0063] Example 3:

[0064] Compared to Embodiment 1 or Embodiment 2, this embodiment provides a mattress.

[0065] As shown in Figure 10, the mattress includes a mattress body, which includes an airbag pad 14 and a limiting block 15 that clamps and encloses the airbag pad 14. The limiting block 15 clamps, positions, and protects the airbag pad 14, ensuring that the airbag pad 14 is in a preset position and its firmness is adjusted by inflation and deflation, thereby improving the comfort of the mattress.

[0066] In this embodiment, the limiting block 15 is provided with perforations. The number and position of the perforations are matched one by one with the bladder components 13 on the airbag cushion 14. During installation, the limiting block 15 wraps around the airbag cushion 14, and the perforations are fitted onto the corresponding bladder components 13, so that each bladder component 13 is limited by the inner wall of the perforation (as shown in Figure 11). This ensures that the bladder components 13 can achieve vertical extension and retraction under the guidance of the perforations, and then the softness and hardness can be adjusted by adjusting the air pressure to provide comfortable support for the user.

[0067] The other structures and effects of the airbag cushion 14 described in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

Claims

1. An airbag cushion, comprising airbag strips (1) arranged closely in a front-to-back direction, wherein the airbag strips (1) are provided with air passages (2), characterized in that, The end of the air passage (2) is provided with a connecting platform (3), and the top of the connecting platform (3) is provided with a flat top plate (4). The top plate (4) has an upward-facing air port (5) in the middle. The air port (5) is provided with a three-way fitting (6). The three-way fitting (6) includes a lower pipe opening (8) with a patch (7). The patch (7) is tightly fitted to the top plate (4) so ​​that the air port (5) is aligned and connected with the lower pipe opening (8) and connected to the outside through the three-way fitting (6).

2. The airbag cushion according to claim 1, characterized in that, The connecting platform (3) is formed by the expansion of the end of the air passage (2), and the top plate (4) is formed in the periphery of the air port (5). The patch (7) is matched and attached to the top plate (4) and sealed and bonded by circumferential welding. The vertical projection of the patch (7) falls completely into the top plate (4).

3. An airbag cushion according to claim 2, characterized in that, The air inlet (5) is provided with a radially opened slit (10) around its periphery. The slit (10) opens and increases the area of ​​the air inlet (5) so that the patch (7) can pass through the air inlet (5) and be attached and fixed to the bottom surface of the top plate (4).

4. An airbag cushion according to claim 3, characterized in that, The cut (10) is in the shape of a straight line. The cut (10) is symmetrically arranged with the air port (5) axis as the center. The top plate (4) is rectangular. The cut (10) is arranged along the length direction of the top plate (4). The vertical projection of the cut (10) falls completely into the patch (7). The horizontal distance between any section of the cut (10) and the edge of the patch is not less than 5mm.

5. An airbag cushion according to claim 1, characterized in that, The tee fitting (6) is T-shaped and includes two front and back facing upper pipe ports (11). The corresponding upper pipe ports (11) of adjacent tee fittings (6) are axially aligned and sealed together by a sleeve (12).

6. An airbag cushion according to any one of claims 1-5, characterized in that, The airbag strip (1) includes a long strip-shaped airway platform (9) and airbag components (13) arranged linearly along the length of the airway platform (9). The airway channel (2) is set on the airway platform (9) and communicates with each airbag component (13) along the way. The airway platform (9) includes an upper plate and a lower plate. The upper plate and the lower plate are stacked vertically and enclosed by partial welding to form the airway channel (2) and the connecting platform (3).

7. An airbag cushion according to any one of claims 1-5, characterized in that, The airbag strip (1) includes airbag components (13) arranged in a linear manner. The air passage (2) is a long tube. Air holes (16) are opened on the sections of the air passage (2) located in each airbag component (13). The air passage (2) connects each airbag component (13) in series so that the inner cavity of each airbag component (13) is connected through the air passage (2).

8. An airbag cushion according to claim 7, characterized in that, The airbag strip (1) is long and narrow, the airbag assembly (13) is arranged linearly along the length of the airbag strip (1), and the air passage (2) is arranged along the length of the airbag strip (1) and connected in series with each airbag assembly (13) along the way.

9. An airbag cushion according to claim 7, characterized in that, The capsule assembly (13) includes an upper cover (17) and a lower cover (18). The upper cover (17) and the lower cover (18) vertically clamp the air passage (2) and enclose it to form an inner cavity isolated from the outside. The inner cavity is connected to the outside through a corresponding vent (16) so that the capsule assembly (13) can extend and retract vertically and adjust its support.

10. An airbag cushion according to claim 9, characterized in that, The bladder assembly (13) located at the end of the airbag strip (1) forms the connecting platform (3) by vertically stacking the upper cover (17) and the lower cover (18), and the air passage (2) is connected to the outside through the connecting platform (3).

11. An airbag cushion according to claim 9, characterized in that, The upper cover (17) and the lower cover (18) are symmetrical structures. The upper cover (17) and the lower cover (18) are provided with upper grooves (19) and lower grooves (20) that face each other. The upper cover (17) and the lower cover (18) are vertically aligned and stacked and welded and sealed so that the upper grooves (19) and the lower grooves (20) enclose and form the inner cavity.

12. An airbag cushion according to claim 11, characterized in that, The upper groove (19) has an upper notch (21) on both sides of the groove opening, and the lower groove (20) has a lower notch (22) on both sides of the groove opening. The upper notch (21) and the lower notch (22) are aligned and stacked to tightly wrap the air passage (2) so that the air passage (2), the upper notch (21) and the lower notch (22) are welded and sealed.

13. An airbag cushion according to claim 11, characterized in that, The periphery of the slot openings of the upper slot (19) and the lower slot (20) are both flat, so that the bottom surface of the upper cover (17) and the top surface of the lower cover (18) fit tightly together.

14. An airbag cushion according to claim 11, characterized in that, The upper groove (19) and the lower groove (20) have different depths; or, the vent (16) is opened in the middle of the air passage (2) located in the inner cavity section; or, there are two vents (16) and they are respectively opened towards the upper groove (19) and the lower groove (20).

15. An airbag cushion according to claim 7, characterized in that, The side of the capsule assembly (13) is provided with a contact part (23) extending along the direction of the air passage (2). Adjacent capsule assemblies (13) are positioned by contacting each other through the corresponding contact parts (23) so that the relative positions between adjacent capsule assemblies (13) are fixed.

16. An airbag cushion according to claim 7, characterized in that, The end of the air passage (2) is exposed at the end of the airbag strip (1) and forms an air port (5) that communicates with the outside.

17. A mattress using the air cushion cushion according to any one of claims 1-16, comprising a mattress body, characterized in that, The cushion includes an airbag cushion (14) and a limiting block (15) that clamps and wraps the airbag cushion (14).

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