Air bag cushion and mattress using same

Abstract

The utility model relates to an air bag cushion and a mattress using the same. An existing three-way pipe fitting is small in application range, and the use experience is affected. The air bag comprises air bag strips which are tightly arranged in the front-back direction, air ports are formed in the ends of the air bag strips, three-way pipe fittings are inserted in the air ports, each three-way pipe fitting comprises an inner pipe opening connected with the corresponding air port in an inserted mode and outer pipe openings formed in the front-back direction in a back-to-back mode, and the corresponding outer pipe openings of the adjacent three-way pipe fittings are communicated in a sealed mode through sleeves. And the air pressure in the air bag strips is synchronously adjusted. Corresponding outer pipe openings of the adjacent three-way pipe fittings are connected through sleeves to form a wide overlapping area, the sealing performance is improved by arranging a wide welding area, the service life of the air bag cushion is prolonged, the distance between the air bag strips can be adjusted by arranging differentiated sleeve lengths, the application range of the three-way pipe fittings is enlarged, assembling is convenient, and the cost is reduced. The 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 using the airbag cushion. Background Art

[0002] Existing mattresses are equipped with airbag cushions with adjustable air pressure. The airbag cushions include airbag strips that are tightly arranged in the front-to-back direction. The airbag strips are assembled to form airbag cushions of any size, making them convenient for filling in mattresses. Each of the airbag strips is equipped with a three-way pipe fitting. This not only ensures that adjacent airbag strips can be connected through the three-way pipe fitting, so that the air pressure in multiple airbag strips remains balanced, but also ensures that the airbag strips can be connected to an external controller and the air pressure can be adjusted to achieve the purpose of soft and hard adjustment. The corresponding outer tube lengths of adjacent three-way pipe fittings need to match the distance between adjacent airbag strips. As a result, the three-way pipe fittings need to be set up in multiple models according to the outer tube lengths to meet the processing and assembly requirements of different airbag cushions. As a result, the excessive number of models of three-way pipe fittings affects processing and assembly efficiency, increases component costs, and affects the user experience.

[0003] In addition, the existing three-way pipe fittings are butt-welded through the end face of the outer pipe mouth, resulting in a smaller welding area width. The welds are prone to tearing and damage due to local deformation and extrusion, causing the seals between adjacent three-way pipe fittings to fail and affecting the normal use of the airbag cushion, shortening the service life of the airbag cushion 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 using the same. The corresponding outer pipe openings of adjacent three-way pipe fittings are connected by sleeves to form a wider overlapping area. This not only improves the sealing performance by setting a wider welding area, thereby extending the service life of the airbag cushion, but also adjusts the distance between the airbag strips by setting differentiated sleeve lengths, thereby increasing the applicable scope of the three-way pipe fitting, facilitating assembly, and improving the user experience.

[0005] The present invention is achieved by the following method: an airbag cushion comprises airbag strips arranged closely in a front-to-back direction, each of the airbag strips having an air port at its end, a tee pipe fitting inserted into the air port, the tee pipe fitting comprising an inner port plugged into the air port and outer ports disposed in a front-to-back direction. The corresponding outer ports of adjacent tee pipe fittings are sealed and connected by a sleeve to synchronize the air pressure within the airbag strips. The tee pipe fittings are pluggable and removably mounted on the air port. A sleeve is inserted between the corresponding outer ports of adjacent tee pipe fittings to form a wide radial overlap region. The overlap region is welded to form a sealed weld region. This increases the width of the weld region to improve the connection strength and sealing performance between the sealing sleeve and the outer port, preventing tearing and damage at the connection between the sleeve and the outer port due to compression, thereby extending the service life of the airbag cushion. Furthermore, the length of the outer port can be effectively shortened. The sleeve length can be adjusted to meet a predetermined span requirement between airbag strips, thereby expanding the applicability of the tee pipe fitting and improving the user experience.

[0006] Preferably, the tee is T-shaped, with the inner opening inserted into the air port, so that the corresponding outer openings of adjacent tee pieces face each other and are coaxially arranged. The tee pieces are independently processed and assembled, with the inner opening and air port sealed and welded together so that the axes of the two outer openings are arranged in a front-to-back direction, facilitating connection with the tee pieces on adjacent airbag strips.

[0007] Preferably, the outer edge diameter of the inner tube mouth is the same as the inner edge diameter of the air port, so that the inner tube mouth is tightly inserted into the air port and is adhered and sealed by circumferential welding. The tightness of the fit is improved by reducing the gap between the outer wall of the inner tube mouth and the inner wall of the air port, thereby facilitating welding sealing and firm connection.

[0008] Preferably, the outer diameter of the outer pipe opening is the same as the inner diameter of the sleeve port, so that the outer pipe opening is inserted into the sleeve port and achieves an adhesive seal through circumferential welding. The outer pipe opening is inserted into the corresponding port of the sleeve, and the gap between the outer wall of the outer pipe opening and the inner wall of the sleeve port is reduced to improve the fit, so that the corresponding outer pipe openings of adjacent tee pipe fittings are sealed through the sleeve.

[0009] Preferably, the inner pipe opening and the air port, as well as the outer pipe opening and the sleeve port are connected by a sleeve to form an annular overlapping welding area, and the width of the welding area is A, A≥5mm, which not only ensures that the welding area has a good sealing effect, but also reduces the processing cost and difficulty by limiting the width of the welding area, thereby improving the user experience.

[0010] Preferably, the inner tube opening and the air port have identical, elliptical cross-sectional profiles. The inner tube opening is inserted into the air port and restricts deflection of the tee fitting. This elliptical cross-sectional profile not only restricts rotation of the inner tube opening relative to the air port, thereby ensuring that the axis of the outer tube opening is always aligned forward and backward, facilitating connection of adjacent tee fittings via the sleeve and effectively reducing airflow resistance, but also ensures that the cross-sectional areas of the inner tube opening and the air port meet airflow flow requirements, thereby ensuring that the air pressure within the airbag strip can be effectively and quickly adjusted.

[0011] Preferably, the airbag strip comprises an elongated air platform and unit cells arranged linearly along the length of the air platform. The air platform is provided with air channels connecting the unit cells, with the ends of the channels forming the air ports. The air platform serves to both securely connect the unit cells, ensuring a fixed relative position between them, and to lay out the air channels and connect the unit cells in series, ensuring constant and synchronous air pressure within each cell.

[0012] Preferably, the end of the air channel extends to the edge of the air platform, and the air port is exposed outwardly at the edge of the air platform with the axis horizontal, so that the area outside the air platform edge forms the assembly space for the three-way pipe fitting. The end of the air channel forms an air port located at the end of the air platform. The air port is positioned horizontally and outwardly, which not only facilitates the horizontal insertion and fixation of the three-way pipe fitting through the inner pipe port, but also ensures that the sleeve is positioned away from the unit capsule to prevent compression and interference between the two.

[0013] Preferably, the front and rear edges of the airbag strips are provided with grooves. When adjacent airbag strips are joined together, the corresponding grooves are joined together to form air holes. The air holes not only reduce the amount of raw materials and lower costs, but also provide ventilation and air permeability, facilitating the downward diffusion of moisture.

[0014] A mattress using the airbag cushion comprises a cushion body, the cushion body including the airbag cushion and a retaining block that clamps and encloses the airbag cushion. The retaining block holds, positions, and protects the airbag cushion, ensuring that the airbag cushion is adjusted in a preset position by inflation and deflation, thereby improving the comfort of the cushion body.

[0015] The beneficial effects of the present invention are as follows: the three-way pipe fitting can be installed on the air port in a pluggable manner, and a wider radial overlapping area is formed between the corresponding outer pipe openings of adjacent three-way pipe fittings by inserting a sleeve, and a sealed welding area is formed by welding the overlapping area. The width of the welding area can be increased to improve the connection strength and sealing between the sealing sleeve and the outer pipe opening, prevent the connection between the sleeve and the outer pipe opening from being torn and damaged due to extrusion force, and extend the service life of the airbag cushion. It can also effectively shorten the length of the outer pipe opening, and meet the preset span requirements between the airbag strips by adjusting the length of the sleeve, thereby improving the application range of the three-way pipe fitting and improving the use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a partial cross-sectional structure of the airbag cushion described in Example 1;

[0017] Figure 2 This is a schematic structural diagram of the airbag cushion according to Example 1;

[0018] Figure 3 Schematic diagram of a partial cross-sectional structure of the airbag strip according to Example 1;

[0019] Figure 4 This is a schematic diagram of the disassembled structure of the mattress described in Example 2;

[0020] In the figure: 1. airbag strip, 2. air port, 3. tee pipe fitting, 4. outer pipe port, 5. inner pipe port, 6. sleeve, 7. air path platform, 8. unit bag, 9. air path channel, 10. groove, 11. airbag cushion, 12. limit block. DETAILED DESCRIPTION

[0021] The essential features of the present invention will be further described below with reference to the accompanying drawings and specific implementation methods.

[0022] Example 1:

[0023] This embodiment provides an airbag cushion.

[0024] like Figure 1 and 2 The airbag cushion shown includes airbag strips 1 arranged closely in the front-to-back direction. The ends of the airbag strips 1 are provided with air ports 2, and the air ports 2 are inserted with three-way pipe fittings 3. The three-way pipe fittings 3 include inner pipe openings 5 ​​connected to the air ports 2 and outer pipe openings 4 arranged in a front-to-back direction. The corresponding outer pipe openings 4 of adjacent three-way pipe fittings 3 are sealed and connected by sleeves 6 to enable synchronous adjustment of the air pressure in the airbag strips 1. The three-way pipe fitting 3 is pluggable and installed on the air port 2. The corresponding outer pipe openings 4 of adjacent three-way pipe fittings 3 are formed with a wider radial overlapping area by inserting a sleeve 6. The overlapping area is welded to form a sealed welding area. The width of the welding area can be increased to improve the connection strength and sealing between the sealing sleeve 6 and the outer pipe opening 4, prevent the connection between the sleeve 6 and the outer pipe opening 4 from being torn and damaged due to extrusion force, and extend the service life of the airbag cushion 11. It can also effectively shorten the length of the outer pipe opening 4, and meet the preset span requirement between the airbag strips 1 by adjusting the length of the sleeve 6, thereby improving the application range of the three-way pipe fitting 3 and improving the use experience.

[0025] In this embodiment, the three-way pipe fitting 3 is T-shaped, including two outer pipe openings 4 that are coaxial and arranged in opposite directions, and an inner pipe opening 5 that is arranged perpendicular to the axis of the outer pipe opening 4 (such as Figure 3As shown), the three-way pipe fitting 3 is independently processed and assembled with the airbag strip 1, which not only effectively improves the convenience of use of the three-way pipe fitting 3, but also increases the scope of application of the three-way pipe fitting 3, making it convenient to use with various airbag strips 1, reducing production costs and improving assembly efficiency by unifying components.

[0026] In this embodiment, the inner pipe opening 5 and the air port 2 have the same elliptical cross-sectional profile. The inner pipe opening 5 is inserted into the air port 2 and restricts the deflection of the tee fitting 3. During installation, the inner pipe opening 5 is first inserted into the air port 2 and secured by welding, so that the corresponding outer pipe openings 4 of adjacent tee fittings 3 face each other and are coaxially arranged. Then, the appropriate length of the sleeve 6 is cut according to the distance between the corresponding outer pipe openings 4. Finally, the two ends of the sleeve 6 are respectively placed on the corresponding outer pipe openings 4 and secured by welding, so that the outer pipe openings 4 and sleeve 6 are coaxially arranged and form a linear channel for airflow, effectively reducing airflow resistance, thereby improving airflow efficiency and control accuracy.

[0027] In this embodiment, the three-way pipe fitting 3 can be applied to an airbag cushion 11 with differentiated airbag strip 1 spacings. By providing a sleeve 6 of appropriate length, adjacent three-way pipe fittings 3 can be sealed and connected, facilitating assembly operations.

[0028] In this embodiment, the outer edge diameter of the inner pipe mouth 5 is the same as the inner edge diameter of the air port 2, so that the inner pipe mouth 5 is tightly inserted into the air port 2 and is adhered and sealed by circumferential welding. The gap between the outer wall of the inner pipe mouth 5 and the inner wall of the air port 2 is eliminated to improve the tightness of the fit, thereby facilitating welding and sealing, and ensuring that the cross-sectional area of ​​the air port 2 and the inner pipe mouth 5 meets the airflow flow requirements.

[0029] In this embodiment, the outer edge diameter of the outer pipe mouth 4 is the same as the inner edge diameter of the port of the sleeve 6, so that the outer pipe mouth 4 is inserted into the port of the sleeve 6 and is adhered and sealed by circumferential welding. The gap between the outer wall of the outer pipe mouth 4 and the inner wall of the port of the sleeve 6 is eliminated to improve the tightness of the fit, thereby facilitating welding and sealing, and ensuring that the cross-sectional area of ​​the sleeve 6 and the outer pipe mouth 4 meets the airflow flow requirements.

[0030] In this embodiment, an annular weld zone is formed between the end of the sleeve 6 and the corresponding outer pipe port 4, and between the inner pipe port 5 and the corresponding gas port 2, by circumferential welding, thereby ensuring the reliability of the connection seal. The welding method is preferably high-frequency welding or ultrasonic welding. The inner pipe port 5 and the gas port 2, as well as the outer pipe port 4 and the end of the sleeve 6, are connected by a sleeve to form an annular overlapping weld zone. The width of the overlapping weld zone is A, with A ≥ 5 mm being preferred, and A = 7 mm. Parameter A can also be adjusted as needed, which should also be considered a specific implementation of this embodiment.

[0031] In this embodiment, the front and rear edges of the airbag strip 1 are provided with grooves 10. When adjacent airbag strips 1 are spliced ​​together in the front and rear directions, the corresponding grooves 10 are spliced ​​together to form air holes. The air holes are used to reduce the amount of raw materials used.

[0032] It not only reduces costs but also plays a role in ventilation and air permeability, making it easier for moisture to diffuse downwards.

[0033] In this embodiment, the airbag strip 1 comprises an elongated air platform 7 and unit cells 8 linearly arranged along the length of the air platform 7. The air platform 7 is provided with an air channel 9 communicating with each unit cell 8, with the ends of the air channel 9 forming the air port 2. The air platform 7 serves to securely connect the unit cells 8, ensuring the relative positions of the unit cells 8 are fixed. It also lays out the air channel 9 and connects the unit cells 8 in series, ensuring that the air pressure within each unit cell 8 remains constant and can be adjusted synchronously. Furthermore, the leading and trailing edges of the air platform 7 are used to achieve stacked, welded, and fixed attachment of adjacent airbag strips 1. The vertical projections of the unit cells 8 and the air channel 9 at least partially overlap, ensuring that the unit cells 8 can communicate with the external air source through the air channel 9, thereby ensuring that the air pressure within the unit cells 8 can be adjusted synchronously.

[0034] In this embodiment, the end of the air passage 9 extends to the edge of the air platform 7, and the air port 2 is exposed outward at the edge of the air platform 7 with its axis horizontal, so that the area outside the edge of the air platform 7 forms the assembly space for the tee pipe fitting 3. The tee pipe fitting 3 is horizontally inserted into the corresponding air port 2 through the inner pipe opening 5. The axial length of the inner pipe opening 5 is used to increase the horizontal distance between the outer pipe opening 4 and the air port 2. By increasing the horizontal distance between the sleeve 6 and the unit capsule 8, the two are prevented from interfering with each other during use. This ensures that the unit capsule 8 can achieve axial expansion and contraction deformation through inflation and deflation, and also prevents the sleeve 6 from becoming blocked due to compression and depression.

[0035] In this embodiment, the airbag strip 1 includes a plurality of unit capsules 8 arranged in a linear manner. The unit capsules 8 are arranged in a straight line and equidistantly to ensure that the distances between the unit capsules 8 are the same, thereby facilitating the formation of an airbag cushion 11 having a matrix of unit capsules 8 by splicing the airbag strip 1, which not only improves the comfort of use but also facilitates assembly.

[0036] Example 2:

[0037] Compared with the first embodiment, this embodiment provides a mattress.

[0038] like Figure 4 As shown, the mattress includes a cushion body, which includes an airbag cushion 11 and a stopper 12 that clamps and wraps the airbag cushion 11. The stopper 12 holds, positions, and protects the airbag cushion 11, ensuring that the airbag cushion 11 is adjusted in a preset position by inflation and deflation, thereby improving the comfort of the cushion body.

[0039] In this embodiment, the limit block 12 is provided with perforations, and the number and position of the perforations are matched one by one with the unit capsules 8 on the airbag cushion 11. During installation, the limit block 12 wraps the airbag cushion 11, and the perforations are placed on the corresponding unit capsules 8, so that each unit capsule 8 is limited by the inner wall of the perforation, ensuring that the unit capsule 8 can achieve vertical expansion and contraction under the guidance of the perforations, and then the hardness can be adjusted by adjusting the air pressure to provide comfortable support for the user.

[0040] The other structures and effects of the airbag cushion described in this embodiment are consistent with those in the first embodiment and will not be described in detail.

Claims

1. An airbag cushion, comprising airbag strips (1) arranged closely in a front-to-back direction, wherein the ends of the airbag strips (1) are provided with air ports (2), characterized in that: A three-way pipe fitting (3) is inserted into the air port (2), and the three-way pipe fitting (3) includes an inner pipe opening (5) plugged into the air port (2) and outer pipe openings (4) arranged in a front-back and back-to-back manner. The corresponding outer pipe openings (4) of adjacent three-way pipe fittings (3) are sealed and connected via a sleeve (6) so that the air pressure in the airbag strip (1) can be synchronously adjusted.

2. The airbag cushion according to claim 1, characterized in that: The three-way pipe fitting (3) is T-shaped, and the inner pipe opening (5) is inserted into the air port (2) so that the corresponding outer pipe openings (4) between adjacent three-way pipe fittings (3) are mutually facing and coaxially arranged.

3. The airbag cushion according to claim 2, characterized in that: The outer diameter of the inner pipe opening (5) is the same as the inner diameter of the gas port (2), so that the inner pipe opening (5) is tightly inserted into the gas port (2) and is adhered and sealed by circumferential welding.

4. The airbag cushion according to claim 2, characterized in that: The outer edge diameter of the outer pipe opening (4) is the same as the inner edge diameter of the sleeve (6) port, so that the outer pipe opening (4) is inserted into the sleeve (6) port and is adhered and sealed by circumferential welding.

5. The airbag cushion according to claim 2, characterized in that: The inner pipe opening (5) and the air port (2), as well as the outer pipe opening (4) and the sleeve (6) port, are connected via a sleeve to form an annular overlapping welding area, wherein the width of the overlapping welding area is A, and A is ≥ 5 mm.

6. The airbag cushion according to claim 2, characterized in that: The cross-sectional profiles of the inner pipe opening (5) and the air port (2) are identical and elliptical; the inner pipe opening (5) is inserted into the air port (2) and limits the deflection of the three-way pipe fitting (3).

7. The airbag cushion according to any one of claims 1 to 6, characterized in that: The airbag strip (1) comprises a long air path platform (7) and unit bags (8) linearly arranged along the length direction of the air path platform (7); an air path channel (9) communicating with each unit bag (8) is provided on the air path platform (7); and the end of the air path channel (9) forms the air port (2).

8. The airbag cushion according to claim 7, characterized in that: The end of the gas path channel (9) extends to the end edge of the gas path platform (7), and the gas port (2) is exposed outwardly at the end edge of the gas path platform (7) in an axis-horizontal posture, so that the outer area of ​​the end edge of the gas path platform (7) forms an assembly space for the three-way pipe fitting (3).

9. The airbag cushion according to any one of claims 1 to 6, characterized in that: The front and rear edges of the airbag strips (1) are provided with grooves (10); when adjacent airbag strips (1) are spliced ​​together in the front-to-back direction, the corresponding grooves (10) are spliced ​​together to form air holes.

10. A mattress using the airbag cushion according to any one of claims 1 to 9, comprising a cushion body, characterized in that: The cushion body comprises an airbag cushion (11) and a limiting block (12) for clamping and wrapping the airbag cushion (11).

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