A buckling type anti-off air nozzle and mattress

Abstract

This utility model relates to a snap-on anti-detachment air nozzle and mattress. Existing air nozzle connection structures are prone to detachment. This utility model includes a nozzle tube and an air tube sleeved on the nozzle tube. The air nozzle includes a self-locking buckle, which snaps onto the nozzle tube and clamps the air tube to prevent the air tube from detaching from the nozzle tube. By providing a self-locking buckle on the air nozzle, which snaps onto and clamps the air tube, a sealed connection between the air tube and nozzle tube is ensured, preventing detachment. This also facilitates disassembly and maintenance, improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of bedding, specifically to an air valve and a mattress. Background Technology

[0002] Existing mattresses include airbags with internal air cushions and a control box for adjusting the air pressure within the air cushions. The control box is connected to the airbags via air tubes, and adjacent airbags are connected via air nozzles. This allows the control box to adjust the air pressure within each airbag via the nozzles connected to the air tubes, thus allowing the softness and firmness of the airbags to be adjusted according to user needs. However, the air nozzles on the existing airbags are connected by air tubes, with the ends of the tubes fitting over the corresponding nozzle tubes and secured with cable ties for a sealed connection. Because the air tubes are elastic, they are prone to slippage during mattress transportation and bending due to insufficient cable ties, causing the air tubes to detach from the nozzle tubes and rendering the air mattress malfunction. Furthermore, the cable tie fixing method is cumbersome, making assembly and maintenance time-consuming and labor-intensive, thus affecting the user experience. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a snap-on anti-detachment air nozzle and mattress. A self-locking buckle is provided on the air nozzle, which snaps onto the nozzle tube and clamps the air tube. This ensures a sealed connection between the air tube and the nozzle tube, preventing the air tube and nozzle tube from detaching. It also facilitates disassembly and maintenance, improving the user experience.

[0004] This utility model is achieved through the following method: a snap-fit ​​anti-detachment nozzle, including a nozzle tube and an air tube sleeved on the nozzle tube. The nozzle includes a self-locking buckle, which snaps onto the nozzle tube and clamps the air tube to prevent the air tube from detaching from the nozzle tube. By providing a self-locking buckle on the nozzle, which snaps onto and clamps the air tube, a sealed connection between the air tube and the nozzle tube is ensured, preventing detachment. This also facilitates disassembly and maintenance, improving the user experience.

[0005] Preferably, the self-locking buckle includes a fastening part that engages with the mouthpiece and a clamping part that clamps the trachea in conjunction with the mouthpiece. The self-locking buckle is secured to the mouthpiece via the fastening part, ensuring that the self-locking buckle is firmly installed on the mouthpiece. The self-locking buckle clamps the trachea in conjunction with the mouthpiece via the clamping part, ensuring that the trachea is securely and sealingly fitted onto the mouthpiece, preventing the trachea from detaching from the mouthpiece.

[0006] Preferably, the outer wall of the mouthpiece has an annular inner buckle, and the inner wall of the fastening part has an outer buckle. The self-locking buckle is fitted onto the mouthpiece and secured by the inner and outer buckles to clamp and fix the trachea. When the self-locking buckle is fitted onto the mouthpiece, it is secured by the outer and inner buckles, ensuring that the relative position between the self-locking buckle and the mouthpiece is fixed, thereby ensuring that the clamping part can fit tightly against the end edge of the mouthpiece and clamp the trachea.

[0007] Preferably, the inner buckle is formed by a radial bulge on the outer wall of the mouthpiece tube, including a limiting surface perpendicular to the outer wall of the mouthpiece tube and an inclined guide surface. The outer buckle crosses the inner buckle along the guide surface and is locked and positioned by the limiting surface to prevent the self-locking buckle from detaching from the mouthpiece tube. The outer buckle deforms along the guide surface and abuts against the limiting surface after crossing the inner buckle, thus preventing the self-locking buckle from detaching from the mouthpiece tube and ensuring that the self-locking buckle can firmly clamp the air tube with the mouthpiece tube, guaranteeing a sealed connection between the air tube and the mouthpiece tube.

[0008] Preferably, there are at least four outer buckles, which are equidistantly distributed along the circumference of the inner wall of the fastening part. This ensures that each section of the self-locking ring can be positioned by the corresponding outer buckle and also provides deformation space for each outer buckle, allowing it to deform and cross the inner buckle. The inner buckle is annular, and each section of the inner buckle can meet the fastening requirements of the outer buckle. During installation, there is no need to limit the installation angle of the self-locking ring, effectively improving installation convenience.

[0009] Preferably, the outer edge of the mouthpiece is provided with a clamping ring, the clamping ring having a built-in inclined annular surface, and the clamping part being narrowed and forming an outer inclined annular surface through its inner wall. A self-locking buckle engages with the mouthpiece, clamping the air tube by the closely abutting built-in and outer inclined annular surfaces. The built-in and outer inclined annular surfaces are parallel to each other, facilitating the clamping of the air tube by their mutual contact. This improves the reliability of the connection between the air tube and the mouthpiece, preventing detachment, and also enhances the sealing reliability between the air tube and the mouthpiece, preventing air leakage.

[0010] Preferably, the outer wall of the mouthpiece forms an annular groove between the clamping ring and the inner buckle. The air tube deforms under pressure and occupies the annular groove, so that the air tube is tightly clamped by the self-locking ring and the mouthpiece. The annular groove can be blocked by the self-locking ring, forming a space for the end edge of the air tube to deform under pressure. The end edge of the air tube is embedded in the annular groove through deformation, which not only improves the sealing reliability between the air tube and the mouthpiece, but also improves the anti-dislodgement performance of the air tube.

[0011] Preferably, the nozzle is T-shaped, with each end of its horizontal portion forming a nozzle tube that connects to a corresponding air tube. The nozzle tube engages with a corresponding self-locking ring and clamps the corresponding air tube. The two ends of the horizontal portion of the nozzle form two interconnected and coaxial nozzle tubes, facilitating communication between adjacent nozzles via these tubes. The vertical portion connects to the airbag strip, allowing the airbag strip to connect to an external air source via the nozzle, thereby ensuring adjustable air pressure within the airbag strip.

[0012] Preferably, the vertical bottom end of the nozzle has a connection port communicating with the nozzle tube. A connecting piece is provided around the connection port, and the bottom surface of the connecting piece has an anti-blocking protrusion to form an airflow channel, preventing the connection port from being sealed. The nozzle communicates with the airbag strip through the connection port, allowing for adjustable air pressure within the airbag strip. The connecting piece is fitted against the top wall of the airbag strip's inner cavity, increasing the contact area to improve sealing reliability. The anti-blocking protrusion abuts against the bottom wall of the airbag strip's inner cavity, preventing the bottom of the inner cavity from being blocked by the connecting piece, ensuring unobstructed airflow between the nozzle and the airbag strip's inner cavity.

[0013] A mattress includes an airbag mattress, the airbag mattress comprising airbag strips arranged side by side, each airbag strip having an air nozzle at its end, and corresponding nozzle tubes of adjacent airbag strips connected by air tubes. The corresponding nozzle tubes of adjacent airbag strip airbag strips are connected by air tubes, and the air tubes and nozzle tubes are screwed together with corresponding self-locking screw rings to ensure unobstructed airflow and isolation from the outside space.

[0014] Preferably, the airbag strip includes an upper substrate and a lower substrate, which are vertically stacked and enclosed to form a unit airbag and an air passage connecting the unit airbags. The bottom of the air nozzle is inserted between the upper and lower substrates and communicates with the air passage. The stacking of the upper and lower substrates to form the unit airbag and air passage simplifies the structure for mass production and ensures that the unit airbags on the same airbag strip can be connected through the air passage and achieve uniform air pressure regulation.

[0015] Preferably, the airbag cushion is a support cushion or a massage cushion. The airbag cushion can be placed in different positions on the mattress and perform different functions to provide different functions for the user and meet the user's needs.

[0016] The beneficial effects of this utility model are as follows: A self-locking buckle is set on the air nozzle, which is fastened and fixed to the nozzle tube and clamps the air tube. This not only ensures a sealed connection between the air tube and the nozzle tube and prevents the air tube and the nozzle tube from separating, but also facilitates disassembly and maintenance and improves the user experience. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the air nozzle described in Embodiment 1;

[0018] Figure 2 This is a cross-sectional view of the air nozzle described in Embodiment 1;

[0019] Figure 3 This is a cross-sectional view of the self-locking buckle described in Embodiment 1;

[0020] Figure 4 This is a schematic diagram of the disassembly structure of the air nozzle described in Embodiment 1;

[0021] Figure 5This is a schematic diagram of the airbag strip described in Embodiment 2;

[0022] Figure 6 This is a top view schematic diagram of the airbag structure described in Embodiment 2;

[0023] Figure 7 This is a schematic diagram of the airbag cushion structure described in Example 2;

[0024] Figure 8 This is a schematic diagram of the disassembled structure of the mattress described in Example 2;

[0025] In the diagram: 1. Mouth tube, 2. Air tube, 3. Self-locking buckle, 4. Fastening part, 5. Clamping part, 6. Inner buckle, 7. Outer buckle, 8. Limiting surface, 9. Guiding surface, 10. Clamping ring, 11. Internal inclined annular surface, 12. External inclined annular surface, 13. Annular groove, 14. Connecting port, 15. Connecting piece, 16. Anti-stick protrusion, 17. Unit bladder, 18. Air passage, 19. Air nozzle, 20. Support pad, 21. Massage pad. Detailed Implementation

[0026] The essential features of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1:

[0028] This embodiment provides a snap-on anti-detachment nozzle.

[0029] like Figure 1 The illustrated air nozzle 19 includes a nozzle tube 1 and an air tube 2 sleeved on the nozzle tube 1. The air nozzle 19 includes a self-locking ring 3, which engages with the nozzle tube 1 and clamps the air tube 2 to prevent the air tube 2 from detaching from the nozzle tube 1. The self-locking ring 3 on the air nozzle 19, which engages with and clamps the air tube 2, ensures a sealed connection between the air tube 2 and the nozzle tube 1, preventing detachment. It also facilitates disassembly and maintenance, improving the user experience.

[0030] In this embodiment, the self-locking buckle 3 includes a buckling part 4 that engages with the mouthpiece 1 and a clamping part 5 that cooperates with the mouthpiece 1 to clamp the air tube 2. The buckling part 4 can be fixedly engaged with the mouthpiece 1 to ensure that the relative position between the self-locking buckle 3 and the mouthpiece 1 is fixed. The clamping part 5 can cooperate with the mouthpiece 1 to clamp the air tube 2 to ensure that the air tube 2 is sealed to the mouthpiece 1 and to prevent the air tube 2 from detaching from the mouthpiece 1.

[0031] In this embodiment, the outer wall of the mouthpiece 1 is provided with an annular inner buckle 6, and the inner wall of the fastening part 4 is provided with an outer buckle 7. The self-locking ring 3 is sleeved on the mouthpiece 1 and fastened and fixed by the inner buckle 6 and the outer buckle 7 to clamp and fix the air tube 2. The air tube 2 is sleeved on the mouthpiece 1 and is arranged adjacent to the inner buckle 6 so that the inner buckle 6 and the outer buckle 7 cooperate to fasten and lock. During installation, firstly, the end of the air tube 2 passes through the self-locking ring 3 and is sleeved on the mouthpiece 1. The end edge of the air tube 2 crosses the built-in inclined annular surface 11 and is embedded in the annular groove 13. Then, the self-locking ring 3 moves along the air tube 2 and is sleeved on the end of the mouthpiece 1. Finally, the outer buckle 7 of the self-locking ring 3 is fastened and locked with the inner buckle 6 of the air tube 2 so that the built-in inclined annular surface 11 and the outer inclined annular surface 12 match and face each other to clamp the air tube 2.

[0032] In this embodiment, the outer wall of the mouthpiece tube 1 is provided with a clamping ring 10, an annular groove 13, and an inner buckle 6 from the outside to the inside. After installation, the self-locking buckle 3 is locked with the inner buckle 6 of the air tube 2 through the outer buckle 7 and drives the outer inclined annular surface 12 to fit against the inner inclined annular surface 11 along the axial direction of the mouthpiece tube 1. This ensures that the air tube 2 is clamped by the outer inclined annular surface 12 and the inner inclined annular surface 11, and also ensures that the end edge of the air tube 2 can be fixed in the annular groove 13. This improves the anti-detachment performance by increasing the length of the air tube 2 between the mouthpiece tube 1 and the self-locking buckle 3, and also provides deformation space for the end edge of the air tube 2 through the annular groove 13. The end edge of the air tube 2 is squeezed and deformed in the annular groove 13, preventing it from sliding outward and detaching through the gap between the inner inclined annular surface 11 and the outer inclined annular surface 12.

[0033] In this embodiment, the inner buckle 6 is formed by a radial bulge on the outer wall of the mouthpiece tube 1, including a limiting surface 8 perpendicular to the outer wall of the mouthpiece tube 1 and an inclined guide surface 9. The outer buckle 7 crosses the inner buckle 6 along the guide surface 9 and is locked and positioned by the limiting surface 8 to prevent the self-locking ring 3 from detaching from the mouthpiece tube 1. The inner buckle 6 is integrally formed with the mouthpiece tube 1, ensuring that the inner buckle 6 has good structural strength, thereby limiting the self-locking ring 3. The guide surface 9 is located on the side of the inner buckle 6 facing the annular groove 13. The guide surface 9 can convert the axial force generated when the outer buckle 7 moves with the self-locking ring 3 along the axial direction of the mouthpiece tube 1 into a radial deformation force, causing the outer buckle 7 to deform and cross the inner buckle 6. After crossing the inner buckle 6, the outer buckle 7 resets and is locked and positioned by the limiting surface 8 to prevent the self-locking ring 3 from detaching from the mouthpiece tube 1. The limiting surface 8 is set perpendicular to the outer wall of the mouthpiece tube 1, effectively preventing the outer buckle 7 from deforming under force, thereby improving the reliability of the anti-detachment mechanism.

[0034] In this embodiment, there are at least four outer buckles 7, which are evenly spaced along the circumferential direction of the inner wall of the fastening portion 4. There are four outer buckles 7 (e.g., Figure 3As shown in the figure, the outer buckles 7 are evenly spaced around the inner wall of the fastening part 4, ensuring that each section of the periphery of the self-locking buckle 3 can be fastened and positioned by the corresponding outer buckle 7, and also providing deformation space for each outer buckle 7, so that the outer buckle 7 can cross the inner buckle 6 through deformation. In addition, the number of outer buckles 7 can be adjusted as needed, such as using five or six, which should all be considered as specific implementations of this embodiment. The outer buckles 7 are inclined, with their outer ends fixed to the inner wall of the self-locking fastener 3, and their inner ends inclined towards the outer inclined ring surface 12, so as to improve the deformation resistance when the outer buckle 7 abuts against the limiting surface 8.

[0035] In this embodiment, a clamping ring 10 is provided on the outer edge of the mouthpiece 1. The clamping ring 10 has a built-in inclined annular surface 11. The clamping part 5 is narrowed and forms an outer inclined annular surface 12 through its inner wall. The self-locking buckle 3 is fastened to the mouthpiece 1 and clamps the trachea 2 by the mutually abutting built-in inclined annular surface 11 and outer inclined annular surface 12. The angle between the built-in inclined annular surface 11 and the axis of the mouthpiece 1 and the angle between the outer inclined annular surface 12 and the axis of the self-locking buckle 3 are the same, ensuring that the built-in inclined annular surface 11 and outer inclined annular surface 12 can match and fit when the self-locking buckle 3 and the mouthpiece 1 are coaxially fastened, thereby improving the clamping force on the trachea 2. The clamping part 5 of the self-locking buckle 3 forms the external inclined ring surface 12 by narrowing the opening. The clamping part 5 is narrowed, and the inner wall of the clamping part 5 forms the external inclined ring surface 12. This helps to convert the axial force formed by the fastening part 4 into the radial force of clamping the air tube 2. In turn, by reducing the gap width between the inner inclined ring surface 11 and the outer inclined ring surface 12, the clamping force on the air tube 2 is improved, thereby improving the anti-detachment performance and sealing performance.

[0036] In this embodiment, the outer wall of the mouthpiece 1 forms an annular groove 13 between the clamping ring 10 and the inner buckle 6. The air tube 2 deforms under pressure and squeezes the annular groove 13, so that the air tube 2 is tightly clamped by the self-locking ring 3 and the mouthpiece 1. By shortening the length of the inner inclined annular surface 11, the annular groove 13, and the inner buckle 6 along the axial direction of the mouthpiece 1, the size of the self-locking ring 3 is reduced, which facilitates processing and use. The annular groove 13 can also be used to hide the end edge of the air tube 2, so that the end edge of the air tube 2 can be locked in the annular groove 13 by its own deformation and contraction, ensuring that the inner inclined annular surface 11 and the outer inclined annular surface 12 are completely isolated by the air tube 2, thereby improving the sealing reliability and anti-detachment reliability.

[0037] In this embodiment, the air nozzle 19 is T-shaped (e.g., Figure 2 As shown), the two ends of the horizontal portion of the air nozzle 19 respectively form nozzle tubes 1 that are connected to the corresponding air tubes 2. The nozzle tubes 1 are fastened to the corresponding self-locking buckles 3 and clamp the corresponding air tubes 2, so that the corresponding nozzle tubes 1 of adjacent airbag nozzles 19 are connected through the air tubes 2. The two ends of the air tubes 2 are respectively sleeved on the corresponding nozzle tubes 1 and fastened and locked by the corresponding self-locking buckles 3 (as shown). Figure 4As shown), ensure that the air nozzles 19 are sealed and connected to each other and share a common air source.

[0038] In this embodiment, the bottom vertical portion of the nozzle 19 is provided with a connection port 14 communicating with the nozzle tube 1, allowing the nozzle 19 to communicate with the airbag strip through the connection port 14. A connecting piece 15 is provided around the connection port 14. By providing the connecting piece 15, the contact area between the connection port 14 and the airbag strip is increased, thereby improving the connection reliability and sealing reliability. This prevents the nozzle 19 from detaching from the airbag strip and also prevents leakage between the nozzle 19 and the airbag strip.

[0039] In this embodiment, the bottom surface of the connecting piece 15 is provided with an anti-sticking protrusion 16 for forming an airflow channel to prevent the connection port 14 from being stuck and blocked. During installation, the connecting piece 15 is attached to the top wall of the airbag strip's inner cavity, and the anti-sticking protrusion 16 is provided to attach to the bottom wall of the airbag strip's inner cavity, preventing the top and bottom walls of the airbag strip's inner cavity from being blocked due to mutual contact, ensuring smooth airflow, and also preventing the upper and lower substrates from generating noise due to airflow impact, reducing the impact on the user's sleep.

[0040] Example 2:

[0041] Compared to Embodiment 1, this embodiment provides a mattress.

[0042] like Figure 5 and 6 The mattress shown includes an airbag mattress, which comprises airbag strips arranged side by side. Each airbag strip has an air nozzle 19 at its end, and corresponding nozzle tubes 1 of adjacent air nozzles 19 are connected by air tubes 2. The airbag mattress is formed by assembling elongated airbag strips arranged side by side, with adjacent airbag strips connected by air tubes 2. The two ends of the air tubes 2 are respectively connected to the corresponding nozzle tubes 1 of the air nozzles 19 of adjacent airbag strips (e.g., ...). Figure 7 As shown, it not only connects and positions adjacent airbag strips, but also ensures that adjacent airbag strips can be connected through air tube 2 and share the air source from the control box, thereby realizing synchronous adjustment of air pressure inside the airbag strips, ensuring that each area of ​​the airbag pad has the same softness and hardness, and meeting the user's needs.

[0043] In this embodiment, the airbag strip includes an upper substrate and a lower substrate. The upper and lower substrates are vertically stacked and enclosed to form a unit bladder 17 and an air passage 18 connecting the unit bladders 17. The bottom of the air nozzle 19 is inserted between the upper and lower substrates and communicates with the air passage 18. The upper and lower substrates are independently processed and stacked and bonded together. The unit bladder 17 and the air passage 18 connecting the unit bladders 17 are enclosed by bonding the periphery of the upper and lower substrates. The air nozzle 19 communicates with the end of the air passage 18, which ensures that the high-pressure air source flowing through the air nozzle 19 can be transmitted to each unit bladder 17 through the airflow channel, and also effectively avoids the middle section of the airbag strip, preventing the air tube 2 from being blocked due to deformation caused by the user's squeezing.

[0044] In this embodiment, the airbag cushion is a support cushion 20 or a massage cushion 21 (e.g., Figure 8 As shown, different actions are performed at different positions on the mattress to obtain corresponding functions, which should also be considered as specific implementation methods of this embodiment. When the airbag cushion is a support cushion 20, the support cushion 20 is placed inside the mattress, and the air pressure is adjusted and kept constant to provide comfortable support for the user; when the airbag cushion is a massage cushion 21, the massage cushion 21 is placed on top of the mattress, and the massage cushion 21 changes its firmness alternately by reciprocating inflation and deflation, thereby enhancing the massage stimulation for the user.

[0045] The other structures and effects of the air nozzle described in this embodiment are the same as those in Embodiment 1, and will not be repeated here.

Claims

1. A snap-on type anti-dropping gas nozzle comprising a nozzle pipe (1) and a gas pipe (2) sleeved on the nozzle pipe (1), characterized in that, The air nozzle includes a self-locking buckle (3), which is fastened to the nozzle tube (1) and clamps the air tube (2) to prevent the air tube (2) from detaching from the nozzle tube (1).

2. The buckle type anti-dropping air nozzle according to claim 1, characterized in that, The self-locking buckle (3) includes a buckling part (4) that engages with the mouth tube (1) and a clamping part (5) that cooperates with the mouth tube (1) to clamp the air tube (2).

3. The buckle type anti-dropping air nozzle according to claim 2, characterized in that, The outer wall of the mouthpiece (1) is provided with an inner buckle (6) in the shape of a ring, and the inner wall of the fastening part (4) is provided with an outer buckle (7). The self-locking buckle (3) is sleeved on the mouthpiece (1) and fastened and fixed by the inner buckle (6) and the outer buckle (7) to clamp and fix the air tube (2).

4. The buckle type anti-dropping air nozzle according to claim 3, characterized in that, The inner buckle (6) is formed by a radial bulge on the outer wall of the mouth tube (1), including a limiting surface (8) perpendicular to the outer wall of the mouth tube (1) and an inclined guide surface (9). The outer buckle (7) crosses the inner buckle (6) along the guide surface (9) and is locked and positioned by the limiting surface (8) to prevent the self-locking buckle (3) from disengaging from the mouth tube (1); or, there are at least four outer buckles (7), which are equidistantly distributed along the inner wall of the buckle portion.

5. The buckle type anti-dropping air nozzle according to claim 2, characterized in that, The outer wall edge of the mouthpiece (1) is provided with a clamping ring (10), and the clamping ring (10) is provided with an inner inclined ring surface (11). The clamping part (5) is closed and forms an outer inclined ring surface (12) through its inner wall. The self-locking buckle (3) is fastened to the mouthpiece (1) and clamps the air tube (2) through the inner inclined ring surface (11) and the outer inclined ring surface (12) that are close to each other.

6. The buckle type anti-dropping air nozzle according to claim 5, characterized in that, The outer wall of the mouthpiece (1) forms an annular groove (13) between the clamping ring (10) and the inner buckle (6). The air tube (2) is deformed under pressure and squeezes the annular groove (13) so that the air tube (2) is tightly clamped by the self-locking buckle (3) and the mouthpiece (1).

7. A buckle type anti-dropping air nozzle according to any one of claims 1-6, characterized in that, The air nozzle is T-shaped, and the two ends of the horizontal part of the air nozzle form nozzle tubes (1) that are connected to the corresponding air tubes (2). The nozzle tubes (1) are fastened to the corresponding self-locking rings (3) and clamp the corresponding air tubes (2).

8. The buckle type anti-dropping air nozzle according to claim 7, characterized in that, The vertical bottom end of the nozzle is provided with a connection port (14) communicating with the nozzle tube (1). A connecting piece (15) is provided around the connection port (14). The bottom surface of the connecting piece (15) is provided with an anti-sticking protrusion (16) for forming an airflow channel to prevent the connection port (14) from being stuck and blocked.

9. A mattress comprising an air cushion, said air cushion including air cushion strips arranged side by side, characterized in that, The end of the airbag strip is provided with an air nozzle (19) as described in any one of claims 1-8, and the corresponding nozzle tubes (1) of adjacent air nozzles (19) are connected by an air tube (2).

10. A mattress according to claim 9, characterized in that, The airbag strip includes an upper substrate and a lower substrate, which are stacked vertically and enclosed to form a unit bladder (17) and an air passage (18) that connects the unit bladder (17). The bottom of the air nozzle is inserted between the upper substrate and the lower substrate and communicates with the air passage (18); or, the airbag pad is a support pad (20); or, the airbag pad is a massage pad (21).

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