Air bag cushion and mattress

Abstract

The utility model relates to an air bag cushion and a mattress. An existing air bag cushion is poor in sealing performance and connection reliability. The cushion comprises a cushion body, the cushion body comprises closely-arranged unit bag bodies, each unit bag body comprises an upper cover, a bottom plate and a sealing ring, a cover cavity which is exposed downwards is formed in the upper cover, the sealing ring and the periphery of the bottom plate are spliced to form a limiting groove, a cavity opening of the cover cavity is inserted into the limiting groove and fixedly connected with the limiting groove in a hot melting mode, and the sealing ring is arranged in the cover cavity. And the periphery of the bottom plate is hermetically connected with the cover cavity. The sealing ring is arranged between the upper cover and the bottom plate, and the upper cover, the bottom plate and the sealing ring are matched, abutted and fixedly connected through hot melting, so that sealing reliability is effectively improved, connecting structure strength is improved, and use experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of bedding, in particular to an airbag cushion and a mattress. Background Art

[0002] Conventional airbag cushions consist of tightly arranged unit airbags, each comprising an independently machined upper cover and a base plate that are adhesively bonded together. The upper cover defines a downwardly exposed cavity. Both the cavity opening and the base plate's top surface are provided with flat, annular areas for mating. During production, the upper cover is stacked on the base plate so that the corresponding annular areas fit tightly together and then secured by welding to achieve a sealed connection between the base plate and the upper cover. Adjacent unit airbags are connected by welded air ducts. Sealed weld areas are formed by flat, flat welding between the upper cover and base plate, and between the unit airbags and the air ducts. These weld areas not only seal the airbag cavities within the unit airbags, ensuring they are interconnected and isolated from the outside world, but also position the components relative to each other, ensuring the fixed relative positions of the unit airbags.

[0003] During use, the unit bladder will not only expand and contract due to its own inflation and deflation operations, but will also be affected by external forces due to the user lying down, causing the welding area to be frequently and long-term subjected to tearing and pulling forces, and then local tearing and separation will occur. This will cause the unit bladder and the welding area on the trachea to be prone to air leakage, and will also cause the relative positions of the unit bladders to change, shortening the service life of the unit bladder and affecting the user experience. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the present invention provides an airbag cushion and a mattress, in which a sealing ring is arranged between the upper cover and the bottom plate. The three cooperate with each other and are hot-melt fixedly connected, which not only effectively improves the sealing reliability, but also improves the strength of the connection structure and enhances the user experience.

[0005] The utility model is realized by the following method: an airbag cushion comprises a cushion body, the cushion body comprising closely arranged unit airbags, the unit airbags comprising an upper cover, a bottom plate, and a sealing ring, the upper cover having a downwardly exposed airbag cavity, the sealing ring and the bottom plate peripheral edge being assembled to form a retaining groove, the airbag cavity opening being inserted into the retaining groove and being fixed by heat fusion, so that the peripheral edge of the bottom plate and the airbag cavity are sealed and connected. The sealing ring contacts the bottom plate and encloses and forms a retaining groove for the airbag cavity opening of the upper cover, the airbag cavity opening being inserted into the retaining groove and being heat fusion-connected to the sealing ring and the bottom plate, forming two-to-two contacting abutting surfaces between the upper cover, and the abutting surfaces having different orientations, thereby improving the connection reliability by increasing the area of ​​the two-to-two contacting abutting surfaces between the three, ensuring that the airbag cavity of the unit airbag is effectively isolated from the outside space, and effectively preventing the abutting surfaces of the unit airbag from being separated due to the pulling force of any one component alone, thereby improving the structural strength of the unit airbag and enhancing the user experience.

[0006] Preferably, a connecting ring is provided at the bottom of the upper cover. The connecting ring comprises a connecting portion and a retaining portion disposed on the outer side of the bottom end of the connecting portion. The retaining portion is retained within the retaining groove and is secured to the upper cover via the connecting portion. The connecting ring extends downward from the peripheral edge of the bottom of the upper cover to ensure a tight connection between the connecting ring and the upper cover. The connecting portion not only serves to position the retaining portion, ensuring that it can be inserted into the retaining groove, but also contacts the sealing ring and the bottom plate, forming mating surfaces with different orientations, effectively enhancing the strength of the connection structure.

[0007] Preferably, the top surface periphery of the bottom plate is provided with an outer short ring extending upward, and the vertical cross-sectional profile of the sealing ring is L-shaped, including a vertical portion and a horizontal portion provided on the inner side of the top end of the vertical portion. The sealing ring is superimposed on the outer short ring to enclose the limiting groove between the top surface of the outer short ring and the bottom surface of the horizontal portion. The upper section of the vertical portion, the horizontal portion, and the outer short ring enclose an inwardly exposed limiting groove, which not only facilitates the insertion and fixing of the clamping portion, but also forms two-to-two contacting and differently oriented fitting surfaces between the upper cover, the bottom plate, and the sealing ring. By increasing the area of ​​the fitting surface, the connection sealing is improved. By providing fitting surfaces with different orientations, the unit capsule's resistance to local pulling is improved, and the strength of the connection structure between the upper cover and the bottom plate is improved.

[0008] Preferably, the inner edge of the top surface of the outer low ring extends upward to form an annular lower protrusion. The inner end bottom surface of the transverse portion is provided with an upper protrusion, which is suspended above the lower protrusion and forms a notch opening of the retaining groove, which opens inward, so that the retaining groove has a small mouth and a large cavity. The lower protrusion and the upper protrusion correspond vertically and form the notch opening of the retaining groove. The retaining portion passes through the notch and is retained within the retaining groove, forming a plurality of oriented contact surfaces and increasing the area of ​​the contact surface.

[0009] Preferably, the distance between the corresponding surfaces of the upper and lower protrusions is smaller than the distance between the bottom surface of the transverse portion and the outer edge of the top surface of the outer low ring, so that the retaining portion is retained by the retaining groove having a small opening and a large cavity. The retaining groove has a small opening and a large cavity, and the retaining portion is retained and positioned by the contracted groove, preventing the retaining portion from falling out of the retaining groove.

[0010] Preferably, the bottom edge of the upper cover is bent inward to form a horizontal portion connected to the top edge of the connecting portion. This horizontal portion cooperates with the retaining portion to clamp the transverse portion, thereby increasing the contact area between the upper cover and the sealing ring. The horizontal portion extends inward and serves to reduce the size of the cover cavity opening, ensuring that the connecting portion is positioned inward while providing space below the cover body for the retaining portion to extend outward. Furthermore, it can mate with the top wall of the transverse portion of the sealing ring, thereby increasing the contact surface and improving connection and sealing reliability.

[0011] Preferably, an inner high ring is provided around the bottom edge of the base plate, located within the outer low ring. The inner high ring and the vertical projection of the connecting portion are offset from each other, thereby enclosing a through-channel between the inner high ring and the transverse portion for clamping the connecting portion. The inner high ring is positioned higher than the outer low ring, and the top of the inner high ring can cooperate with the transverse portion of the sealing ring to clamp the connecting portion. This not only radially locates the connecting portion, thereby ensuring the concentric arrangement of the upper cover, sealing ring, and base plate, but also increases the contact surface, improving connection and sealing reliability.

[0012] Preferably, the cushion body includes a base having mounting holes arranged in a matrix, and the bottoms of the unit capsules are inserted and snapped into the corresponding mounting holes. The unit capsules are inserted and fixed in the corresponding mounting holes, so that the unit capsules are arranged in a matrix on the base, which not only ensures that the relative positions of adjacent unit capsules are fixed, but also facilitates and quickly assembles.

[0013] Preferably, the center portion of the base plate is recessed downward to form a stepped annular surface, and the periphery of the lower end of the mounting hole extends inward to form a supporting ring. The unit capsule is inserted into the mounting hole and overlaps the supporting ring via the stepped annular surface. The supporting ring vertically intersects with the stepped annular surface, supporting the unit capsule and ensuring that the unit capsules are arranged at the same height. A space is also reserved in the center of the supporting ring for the air supply port to be exposed, facilitating connection of the air port to an external air source via an air pipe.

[0014] Preferably, a vertically extending air port is provided in the middle of the base plate, through which the unit capsules extend vertically through the mounting hole and communicate with the outside world. The air port is located in the middle of the base plate, passes through the mounting hole, and is connected to an external air source via an air pipe, allowing the unit capsules to adjust their softness and hardness by adjusting the air pressure. The air port is located within the base, replacing the air pipe in locating adjacent unit capsules, ensuring that the relative positions of adjacent unit capsules are fixed.

[0015] Preferably, the sidewalls of the mounting hole are provided with L-shaped buckle grooves, comprising a vertical groove cavity exposed upwardly on the top surface of the base plate and a transverse groove cavity provided along the outer edge of the support ring. The outer edge of the stepped annular surface extends outwardly to form fasteners corresponding to the buckle grooves one by one. The unit capsule is installed in the mounting hole and the fasteners are inserted and locked into the buckle grooves. The fasteners are inserted into the buckle grooves through the vertical groove cavity and rotated along the transverse groove cavity to buckle. The transverse groove cavity not only serves as a vertical limit for the fasteners, preventing the unit capsules from being separated from the mounting hole, improving connection reliability, but also facilitating assembly and disassembly.

[0016] A mattress comprises an airbag cushion, a position-limiting pad enclosing the airbag cushion, and an outer cover enclosing the airbag cushion and the position-limiting pad. The position-limiting pad clamps, positions, and protects the airbag cushion, ensuring that the airbag cushion is adjusted in position by inflation and deflation, thereby improving the comfort of the mattress. The outer cover encloses the airbag cushion and the position-limiting pad, positioning and protecting them.

[0017] The outstanding beneficial effects of the present invention are: the sealing ring contacts and encloses the bottom plate to form a limiting groove for the insertion of the upper cover cavity opening, the periphery of the cavity opening of the cover is inserted into the limiting groove and is hot-melt connected with the sealing ring and the bottom plate respectively, and a pair of contacting fitting surfaces are formed between the upper cover, the bottom plate and the sealing ring, and the fitting surfaces have different orientations. The connection reliability is improved by increasing the fitting surface area of ​​the pairwise contact between the three, which not only ensures that the cavity of the unit capsule is effectively isolated from the external space, but also effectively prevents the separation of the fitting surface of the unit capsule due to the pulling of any component alone, thereby improving the structural strength of the unit capsule and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the disassembled structure of the airbag cushion described in Example 1;

[0019] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the unit capsule described in Example 1;

[0020] Figure 3 This is a schematic structural diagram of the unit capsule described in Example 1;

[0021] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the upper cover described in Example 1;

[0022] Figure 5 This is a schematic diagram of a partial cross-sectional structure of the sealing ring described in Example 1;

[0023] Figure 6 This is a schematic diagram of a partial cross-sectional structure of the bottom plate described in Example 1;

[0024] Figure 7 This is a schematic diagram of a partial cross-sectional structure of the airbag cushion described in Example 1;

[0025] Figure 8 This is a schematic structural diagram of the airbag cushion according to Example 1;

[0026] Figure 9 This is a schematic diagram of the disassembled structure of the mattress described in Example 2;

[0027] In the figure: 1. unit bladder body, 2. upper cover, 3. bottom plate, 4. sealing ring, 5. limiting groove, 6. connecting part, 7. clamping part, 8. outer low ring, 9. vertical part, 10. horizontal part, 11. lower protrusion, 12. upper protrusion, 13. horizontal part, 14. air port, 15. inner high ring, 16. base, 17. mounting hole, 18. step ring surface, 19. supporting ring, 20. buckle groove, 21. fastener, 22. airbag cushion, 23. limiting pad, 24. outer cover. DETAILED DESCRIPTION

[0028] The essential features of the present invention will be further described below with reference to the accompanying drawings and specific implementation methods.

[0029] Example 1:

[0030] This embodiment provides an airbag cushion.

[0031] like Figure 1 and 2 The airbag cushion shown includes a cushion body, which includes tightly arranged unit bladders 1. The unit bladders 1 include an upper cover 2, a bottom plate 3 and a sealing ring 4. A downwardly exposed cover cavity is provided in the upper cover 2. The sealing ring 4 and the periphery of the bottom plate 3 are spliced ​​together to form a limiting groove 5. The cover cavity opening is inserted into the limiting groove 5 and fixed by hot melt to ensure that the periphery of the bottom plate 3 is sealed and connected to the cover cavity. The sealing ring 4 contacts with the bottom plate 3 and encloses to form a limiting groove 5 for the cover cavity opening of the upper cover 2 to be inserted, and the periphery of the cover cavity opening is inserted into the limiting groove 5 and is hot-melt connected with the sealing ring 4 and the bottom plate 3 respectively. The upper cover 2, the bottom plate 3 and the sealing ring 4 form a fitting surface that contacts each other, and the fitting surfaces have different directions. The connection reliability is improved by increasing the fitting surface area of ​​the three that contact each other, which not only ensures that the capsule cavity of the unit capsule 1 is effectively isolated from the external space, but also effectively prevents the separation of the fitting surface of the unit capsule 1 due to the force pulled by any component alone, thereby improving the structural strength of the unit capsule 1 and improving the user experience.

[0032] In this embodiment, the upper cover 2, the bottom plate 3 and the sealing ring 4 are processed independently and fixed by hot melting after assembly and connection, and fitting surfaces with different orientations are provided between the upper cover 2, the bottom plate 3 and the sealing ring 4 so as to form a pair of abutments and to improve the sealing effect of the connection by increasing the area of ​​the fitting surface, and to ensure that the three are locked to each other and effectively resist external forces from all directions by providing fitting surfaces with different orientations, thereby ensuring that the fitting surfaces always remain in a state of adhesion and sealing, thereby ensuring that the upper cover 2, the bottom plate 3 and the sealing ring 4 have good connection reliability and sealing reliability.

[0033] In this embodiment, a horizontal portion 13 (such as Figure 4 As shown), the connecting ring is arranged below the inner edge of the horizontal portion 13, and the connecting ring includes a connecting portion 6 and a clamping portion 7 arranged on the outer side of the bottom end of the connecting portion 6. The thickness of the clamping portion 7 is greater than the thickness of the connecting portion 6; the vertical cross-sectional profile of the sealing ring 4 is L-shaped (as shown Figure 5 As shown), it includes a vertical portion 9 and a horizontal portion 10 arranged on the inner side of the top of the vertical portion 9, and the bottom surface of the inner end of the horizontal portion 10 is provided with an upper protrusion 12; the top surface periphery of the bottom plate 3 is provided with an outer low ring 8 extending upward (as shown Figure 6As shown in FIG. 1 , the inner edge of the top surface of the outer low ring 8 extends upward to form an annular lower protrusion 11. The bottom periphery of the bottom surface of the bottom plate 3 is located inside the outer low ring 8 and is provided with an inner high ring 15. Both the outer low ring 8 and the inner high ring 15 are formed by the upward extension of the top periphery of the bottom plate 3. The inner high ring 15 is arranged inside the outer low ring 8 and is higher than the outer low ring 8. The upper cover 2, the sealing ring 4 and the bottom plate 3 are all independently processed and formed in one piece, which is convenient for batch processing and overlapping assembly, effectively improving production and assembly efficiency. When producing the unit capsule 1:

[0034] First, the sealing ring 4 is installed to the bottom of the upper cover 2. The connecting portion 6 is bent and deformed to separate the clamping portion 7 from the horizontal portion 13, so that the transverse portion 10 of the sealing ring 4 is inserted between the horizontal portion 13 and the clamping portion 7, and the upper protrusion 12 is inserted between the clamping portion 7 and the connecting portion 6. At this time, the bottom surface of the horizontal portion 13 and the top surface of the transverse portion 10 are in contact with each other to form a horizontal fitting surface, the connecting portion 6 and the transverse portion 10 are in contact with each other to form a vertical fitting surface, the upper protrusion 12 is in contact with both the connecting portion 6 and the clamping portion 7 to form a fitting surface with multiple directions, and the clamping portion 7 is in contact with both the transverse portion 10 and the vertical portion 9 to form a fitting surface with multiple directions.

[0035] Afterwards, the bottom plate 3 is installed from bottom to top to the bottom of the sealing ring 4. The inner high ring 15 is in contact with the inner wall of the connecting portion 6 to form a vertical fitting surface. The outer low ring 8 is in contact with the bottom surface of the clamping portion 7 and uses the lower protrusion 11 to form a fitting surface with multiple directions. The outer wall of the outer low ring 8 contacts the side wall of the vertical portion 9 of the sealing ring 4 to form a vertical fitting surface. The top peripheral edge of the bottom plate 3 contacts the bottom surface of the vertical portion 9 of the sealing ring 4 to form a horizontal fitting surface.

[0036] Finally, the upper cover 2, the sealing ring 4 and the bottom plate 3 are fixed by heat fusion, so that the bonding surfaces are heat fusion bonded.

[0037] After installation, the sealing ring 4 uses its own deformation to achieve close contact with the upper cover 2 and the bottom plate 3, thereby forming multiple fitting surfaces with different orientations, ensuring that the upper cover 2 and the bottom plate 3 are reliably connected and effectively sealed. In addition, the upper cover 2, the sealing ring 4 and the bottom plate 3 cooperate with each other to snap together and lock, ensuring that the relative positions of the three are fixed, and using their own structural strength to play a role in preventing separation, including but not limited to: the horizontal part 13 and the clamping part 7 vertically clamping and locking the horizontal part 10, the horizontal part 10 and the outer low ring 8 vertically clamping and locking the clamping part 7, the inner high ring 15 and the horizontal part 10 horizontally clamping and locking the connecting part 6, the lower protrusion 11 and the vertical part 9 horizontally clamping and locking the clamping part 7, the upper protrusion 12 and the vertical part 9 horizontally clamping and locking the clamping part 7, etc.

[0038] In this embodiment, the sealing ring 4 is superimposed on the outer short ring 8 to enclose the limiting groove 5 between the top surface of the outer short ring 8 and the bottom surface of the transverse portion 10. The distance between the corresponding surfaces of the upper protrusion 12 and the lower protrusion 11 is smaller than the distance between the bottom surface of the transverse portion 10 and the outer edge of the top surface of the outer short ring 8, so that the clamping portion 7 is clamped and limited by the limiting groove 5 with a small mouth and a large cavity, thereby preventing the clamping portion 7 from escaping from the limiting groove 5.

[0039] In this embodiment, the vertical projections of the inner high ring 15 and the connecting portion 6 are staggered with each other, so as to enclose a passage for clamping the connecting portion 6 between the inner high ring 15 and the horizontal portion 10, ensuring that the connecting portion 6 can be sleeved on the outside of the inner high ring 15 and horizontally abutted against each other, ensuring that the bottom plate 3 and the upper cover 2 are concentrically arranged with each other.

[0040] In this embodiment, the cushion body includes a base 16, and the base 16 is provided with mounting holes 17 arranged in a matrix. The bottom of the unit capsule 1 is inserted and buckled into the corresponding mounting holes 17 (such as Figure 8 The diameter of the mounting hole 17 matches the bottom diameter of the unit capsule 1, so that the unit capsule 1 can be inserted into the corresponding mounting hole 17 in an axially vertical posture.

[0041] In this embodiment, the middle portion of the bottom plate 3 is recessed downward to form a stepped annular surface 18 (eg Figure 7 As shown in FIG5 , the lower end periphery of the mounting hole 17 extends inward to form a supporting ring 19. The unit capsule 1 is inserted into the mounting hole 17 and overlaps the supporting ring 19 through the step annular surface 18. An L-shaped buckle groove 20 is provided on the side wall of the mounting hole 17, including a vertical groove cavity exposed upward on the top surface of the bottom plate 3 and a horizontal groove cavity provided along the outer edge of the supporting ring 19. The outer edge of the step annular surface 18 extends outward to form a fastener 21 corresponding to each of the buckle grooves 20 (as shown in FIG5 ). Figure 3 As shown in the figure, the unit capsule 1 is inserted into the mounting hole 17 and the fastener 21 is inserted and locked into the fastener groove 20. During installation, the unit capsule 1 is first inserted vertically into the mounting hole 17, and the fastener 21 descends along the vertical groove cavity to the horizontal groove cavity at the bottom. The unit capsule 1 then rotates circumferentially and drives the fastener 21 to slide along the horizontal groove cavity to ensure that the unit capsule 1 is fastened and fixed in the mounting hole 17.

[0042] In this embodiment, there are at least two fasteners 21 equidistantly spaced along the periphery of the step annular surface 18 . This not only improves fastening reliability by increasing the number of fasteners 21 , but also facilitates processing and use.

[0043] In this embodiment, a vertically penetrating air port 14 is provided in the middle of the base plate 3, and the unit capsule 1 vertically passes through the mounting hole 17 through the air port 14 and is connected to the outside world. The air port 14 passes through the mounting hole 17 downward along with the unit capsule 1 and is exposed at the lower end of the mounting hole 17, which facilitates the connection of the air port 14 with the corresponding air pipe and the connection with the external air source, ensuring that the air pressure in the unit capsule 1 can be adjusted up and down.

[0044] Example 2:

[0045] Compared with the first embodiment, this embodiment provides a mattress.

[0046] like Figure 9 The mattress shown includes the airbag cushion 22, a position-limiting pad 23 that encloses the airbag cushion 22, and a cover 24 that includes the airbag cushion 22 and the position-limiting pad 23. The position-limiting pad 23 holds, positions, and protects the airbag cushion 22, ensuring that the unit bladders 1 on the airbag cushion 22 can be adjusted by inflation and deflation at a preset position. This ensures that the airbag cushion 22 can provide effective upward support, improving comfort, and effectively prevents interference between adjacent airbag cushions 22.

[0047] In this embodiment, the limiting pad 23 is provided with perforations, and the number and position of the perforations are matched one by one with the unit bladders 1 on the airbag cushion 22. During installation, the limiting pad 23 wraps the airbag cushion 22, and the perforations are placed on the corresponding unit bladders 1, so that each unit bladder 1 is limited by the inner wall of the perforation, ensuring that the unit bladder 1 can achieve vertical expansion and contraction under the guidance of the perforations, thereby generating vertical support for the user and providing the user with a comfortable support experience.

[0048] The structure and effect of the airbag cushion described in this embodiment are consistent with those of the second embodiment and will not be described in detail.

Claims

1. An airbag cushion, comprising a cushion body, characterized in that: The cushion body comprises tightly arranged unit capsules (1), the unit capsules (1) comprising an upper cover (2), a bottom plate (3) and a sealing ring (4), a downwardly exposed cover cavity is provided in the upper cover (2), the sealing ring (4) and the periphery of the bottom plate (3) are spliced ​​together to form a limiting groove (5), the cover cavity opening is inserted into the limiting groove (5) and fixed by hot melting, so that the periphery of the bottom plate (3) is sealed and connected to the cover cavity.

2. The airbag cushion according to claim 1, characterized in that: A connecting ring is provided at the bottom of the upper cover (2), the connecting ring comprising a connecting portion (6) and a clamping portion (7) arranged outside the bottom end of the connecting portion (6), the clamping portion (7) being clamped in the limiting groove (5) and fixedly connected to the upper cover (2) via the connecting portion (6).

3. The airbag cushion according to claim 2, characterized in that: The top surface periphery of the bottom plate (3) is provided with an outer short ring (8) extending upward, and the vertical cross-sectional profile of the sealing ring (4) is L-shaped, comprising a vertical portion (9) and a horizontal portion (10) arranged on the inner side of the top end of the vertical portion (9). The sealing ring (4) is superimposed on the outer short ring (8) to enclose the limiting groove (5) between the top surface of the outer short ring (8) and the bottom surface of the horizontal portion (10).

4. The airbag cushion according to claim 3, characterized in that: The inner edge of the top surface of the outer low ring (8) extends upward to form an annular lower protrusion (11), and the inner end bottom surface of the transverse portion (10) is provided with an upper protrusion (12). The upper protrusion (12) is suspended above the lower protrusion (11) and forms a notch of the limiting groove (5) opened inward, so that the limiting groove (5) is in a shape of a small mouth and a large cavity.

5. The airbag cushion according to claim 4, characterized in that: The distance between the corresponding surfaces of the upper protrusion (12) and the lower protrusion (11) is smaller than the distance between the bottom surface of the transverse portion (10) and the outer edge of the top surface of the outer low ring (8), so that the clamping portion (7) is clamped and limited by the limiting groove (5) with a small mouth and a large cavity; or, the bottom edge of the upper cover (2) is bent inward to form a horizontal portion (13) connected to the top edge of the connecting portion (6), and the horizontal portion (13) cooperates with the clamping portion (7) to clamp the transverse portion (10) to increase the contact area between the upper cover (2) and the sealing ring (4).

6. The airbag cushion according to claim 3, characterized in that: An inner high ring (15) is provided on the periphery of the bottom surface of the bottom plate (3) and is located inside the outer low ring (8). The vertical projections of the inner high ring (15) and the connecting portion (6) are staggered with each other to form a through passage for clamping the connecting portion (6) between the inner high ring (15) and the transverse portion (10).

7. The airbag cushion according to any one of claims 1 to 6, characterized in that: The pad body comprises a base (16), the base (16) is provided with mounting holes (17) arranged in a matrix shape, and the bottom of the unit capsule (1) is inserted and buckled into the corresponding mounting holes (17).

8. The airbag cushion according to claim 7, characterized in that: The middle portion of the bottom plate (3) is recessed downward to form a stepped annular surface (18); the periphery of the lower end of the mounting hole (17) is extended inward to form a supporting ring (19); the unit capsule (1) is inserted into the mounting hole (17) and overlapped on the supporting ring (19) via the stepped annular surface (18).

9. The airbag cushion according to claim 8, characterized in that: A vertically penetrating air port (14) is provided in the middle of the base plate (3), and the unit capsule (1) vertically passes through the mounting hole (17) through the air port (14) and communicates with the outside; or, an L-shaped buckle groove (20) is provided on the side wall of the mounting hole (17), including a vertical groove cavity exposed upward on the top surface of the base plate (3) and a horizontal groove cavity arranged along the outer edge of the supporting ring (19), and the outer edge of the step annular surface (18) is extended outward to form a fastener (21) corresponding to the buckle groove (20) one by one, and the unit capsule (1) is installed in the mounting hole (17) and the fastener (21) is driven to be inserted and locked in the buckle groove (20).

10. A mattress, characterized in that: The invention comprises an airbag cushion (22) according to any one of claims 1 to 9, a position limiting pad (23) wrapping the airbag cushion (22), and an outer cover (24) wrapping the airbag cushion (22) and the position limiting pad (23).

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