Air bag cushion and mattress using same

Abstract

The utility model relates to an air bag cushion and a mattress using the same. A three-way connector on an existing air bag cushion is not reliable in sealing. The air bag comprises air bag strips which are tightly arranged in the front-back direction, the air bag strips are communicated with the outside through three-way connectors arranged at the ends of the air bag strips, each three-way connector comprises a front pipe opening formed forwards and a rear pipe opening formed backwards, and the adjacent front pipe openings and the adjacent rear pipe openings of the adjacent three-way connectors are connected in a mutually inserted and sleeved and overlapped mode. The adjacent three-way connectors are connected in a sealed mode. According to the air bag cushion, the corresponding ports of the adjacent three-way connectors are mutually inserted and sleeved to form a wider overlapping area, so that the sealing performance is improved by arranging a wider welding area, the service life of the air bag cushion is prolonged, and the use experience is improved.

Description

Technical Field

[0001] The utility model relates to the field of bedding, and particularly to an airbag pad and a mattress using the same. Background Art

[0002] An existing mattress is provided with an airbag pad with adjustable air pressure. The airbag pad includes airbag strips arranged closely in the front-back direction. The airbag pad of any size is formed by splicing the airbag strips, which is convenient for filling and using in the mattress. Three-way joints are provided on each airbag strip, which not only ensure that adjacent airbag strips can be connected through the three-way joints, so that the air pressure in multiple airbag strips is kept balanced, but also ensure that the airbag strips can be connected to an external controller to adjust the air pressure, achieving the purpose of soft-hard adjustment. An axially arranged annular welding surface is formed between the corresponding ports of adjacent three-way joints, and the corresponding ports are hermetically connected through tight contact welding on the annular welding surface. Since the wall thickness at the periphery of the three-way joint port is small, the width of the annular welding surface is small, which in turn causes the welding part to be easily torn and damaged due to local deformation extrusion, resulting in the sealing failure between adjacent three-way joints, affecting the normal use of the airbag pad, shortening the service life of the airbag pad, and affecting the use experience. Content of the Utility Model

[0003] In order to solve the deficiencies of the prior art, the utility model provides an airbag pad and a mattress using the same. The corresponding ports of adjacent three-way joints form a relatively wide overlapping area through mutual insertion, and then the sealing performance is improved by setting a relatively wide welding area, thereby prolonging the service life of the airbag pad, facilitating assembly, and enhancing the use experience.

[0004] The utility model is realized in the following way: An airbag pad includes airbag strips arranged closely in the front-back direction. The airbag strips are communicated with the outside through three-way joints arranged at their ends. The three-way joint includes a front pipe orifice facing forward and a rear pipe orifice facing backward. The adjacent front pipe orifice and rear pipe orifice between adjacent three-way joints are connected by mutual insertion and overlapping, so that adjacent three-way joints are hermetically connected. The corresponding front pipe orifice and rear pipe orifice of adjacent three-way joints form a relatively wide radial overlapping area through mutual insertion, and a sealed welding area is formed by welding the radial overlapping area. By increasing the insertion depth of the front pipe orifice and the rear pipe orifice, the width of the welding area is increased, thereby enhancing the connection strength and sealing performance between the front pipe orifice and the rear pipe orifice, preventing the tearing and damage between adjacent three-way joints due to extrusion force, and thus prolonging the service life of the airbag pad. The front pipe orifice and the rear pipe orifice of adjacent three-way joints are directly connected by insertion to simplify the operation. Only one welding is required to complete the sealed connection of adjacent three-way joints, effectively improving the assembly efficiency and enhancing the use experience.

[0005] Preferably, the front pipe orifice and the rear pipe orifice have different diameters, so that adjacent three-way joints are connected by inserting and sleeving through the corresponding front pipe orifice and rear pipe orifice and adhesively sealed. By setting different diameters, it is convenient for mutual insertion and sleeving, which not only facilitates assembly, but also ensures that the inner and outer walls of the front pipe orifice and the rear pipe orifice can be matched and fitted, improving the sealing reliability.

[0006] Preferably, the outer diameter of the front pipe orifice matches the inner diameter of the rear pipe orifice, and the front pipe orifice is inserted on the corresponding rear pipe orifice; or, the inner diameter of the front pipe orifice matches the outer diameter of the rear pipe orifice, and the front pipe orifice is sleeved on the corresponding rear pipe orifice. The front pipe orifice and the rear pipe orifice can determine the specific insertion and sleeving relationship by freely setting different diameters, thus facilitating assembly. The front pipe orifice and the rear pipe orifice of the same three-way joint have different diameters, which not only facilitates the large-scale production of general components, but also facilitates the matching connection of the corresponding ports of adjacent three-way joints.

[0007] Preferably, the front pipe orifices and the rear pipe orifices of adjacent three-way joints are axially inserted and overlapped and adhesively sealed by circumferential welding. The front pipe orifice and the rear pipe orifice are axially inserted and fixedly connected by radial extrusion welding, so that each section of the periphery of the front pipe orifice and the rear pipe orifice has a good sealing effect. The welding method is ultrasonic welding or high-frequency welding.

[0008] Preferably, the width of the overlapping welding area corresponding to the front pipe orifice and the rear pipe orifice is A, and A≥5mm, which not only ensures a good sealing effect between the front pipe orifice and the rear pipe orifice, but also reduces the processing cost and difficulty by limiting the width of the welding area, thereby improving the use experience.

[0009] Preferably, the airbag strip includes a plurality of unit airbags arranged linearly, and the unit airbags are connected by an air passage laid along the length direction of the airbag strip, and the end of the air passage extends outward to form the three-way joint. The unit airbags are arranged in a straight line and communicate with each other, which not only facilitates the formation of an airbag pad by arranging the airbag strips side by side, but also ensures that the air pressures in the individual unit airbags on the same airbag strip can be adjusted synchronously, facilitating control and use. Adjacent airbag strips are connected by inserting and sleeving through the corresponding ports of the three-way joint, ensuring sealed communication between adjacent airbag strips. The three-way joint and the airbag strip are of an integral structure, facilitating assembly.

[0010] Preferably, the tee joint is in a T shape and includes a side nozzle connected to the gas path channel, and a front nozzle and a rear nozzle which are arranged forward and backward. The cross-sectional profiles of the front nozzle, the rear nozzle, and the side nozzle are all circular or elliptical. The side nozzle is connected to the gas path channel in the airbag strip to ensure that the air pressures in the unit airbags on the airbag strip can be adjusted synchronously. The front nozzle and the rear nozzle are used for connecting between adjacent tee joints to ensure that the air pressures in adjacent airbag strips can be adjusted synchronously. The cross-sectional profiles of the front nozzle, the rear nozzle, and the side nozzle are all circular to ensure that the air flow rate meets the use requirements. In addition, they can also be elliptical to play a role in restricting rotation on the premise of ensuring the air flow rate requirements, and ensure the precise connection between the tee joints and between the tee joints and the gas path channel.

[0011] Preferably, the front edge and the rear edge of the airbag strip are both formed with marking lines by recesses. When adjacent airbag strips are joined together front to back, the corresponding marking lines are vertically aligned, so that adjacent airbag strips are arranged at equal distances front to back and form an overlapped welding area with equal width. The relative positions between adjacent airbag strips are determined by the overlapped marking lines to ensure that the distances between adjacent airbag strips are the same, which is convenient for precise assembly and also ensures that an overlapped welding area with equal width is formed between the corresponding edges of adjacent airbag strips, improving the reliability of the fixed connection.

[0012] Preferably, grooves are provided on the front edge and the rear edge of the airbag strip. When adjacent airbag strips are joined together front to back, the corresponding grooves are joined to form ventilation holes. The ventilation holes are used to reduce the raw material consumption and cost, and also play a role in ventilation and air permeability, facilitating the downward diffusion of moisture.

[0013] A mattress using the airbag pad includes a pad body, and the pad body includes an airbag pad and a limit block that clamps and wraps the airbag pad. The limit block plays a role in clamping, positioning and protecting the airbag pad, ensuring that the airbag pad is adjusted in hardness by inflating and deflating at a preset position, thereby improving the use comfort of the pad body.

[0014] The beneficial effects of the present utility model: The corresponding front nozzles and rear nozzles of adjacent tee joints form a relatively wide radially overlapped area by mutual insertion, and a sealed welding area is formed by welding the radially overlapped area. The width of the welding area is increased by increasing the insertion depth of the front nozzle and the rear nozzle, thereby improving the connection strength and sealing performance between the front nozzle and the rear nozzle, preventing the adjacent tee joints from being torn and damaged due to extrusion force, and thus prolonging the service life of the airbag pad and improving the use experience. Description of the Drawings

[0015] Figure 1 It is a cross-sectional structural schematic diagram of the airbag pad described in Embodiment 1;

[0016] Figure 2 It is a cross-sectional schematic diagram of the assembly structure of the tee joint described in Embodiment 1;

[0017] Figure 3 Schematic diagram of the assembly structure of the airbag strip described in the first embodiment;

[0018] Figure 4 Schematic diagram of the assembly structure of the airbag pad described in the first embodiment;

[0019] Figure 5 Schematic diagram of the disassembly structure of the mattress described in the second embodiment;

[0020] In the figure: 1. Airbag strip, 2. Three-way joint, 3. Front nozzle, 4. Rear nozzle, 5. Unit airbag, 6. Air passage, 7. Side nozzle, 8. Marking line, 9. Groove, 10. Airbag pad, 11. Limit block. Detailed implementation manners

[0021] The following further illustrates the substantial features of the present utility model in conjunction with the accompanying drawings of the specification and the detailed implementation manners.

[0022] First embodiment:

[0023] This embodiment provides an airbag pad.

[0024] As shown in Figure 1 and 2 an airbag pad, including airbag strips 1 arranged closely in the front-to-back direction. The airbag strips 1 are communicated with the outside through three-way joints 2 provided at their ends. The three-way joint 2 includes a front nozzle 3 arranged forward and a rear nozzle 4 arranged backward. The adjacent front nozzles 3 and rear nozzles 4 between adjacent three-way joints 2 are connected by inserting and overlapping each other, so that adjacent three-way joints 2 are hermetically connected. The corresponding front nozzles 3 and rear nozzles 4 of adjacent three-way joints 2 form a relatively wide radial overlapping area by inserting into each other, and a sealed welding area is formed by welding the radial overlapping area. By increasing the insertion depth of the front nozzle 3 and the rear nozzle 4, the width of the welding area is increased, thereby improving the connection strength and sealing performance between the front nozzle 3 and the rear nozzle 4, preventing the adjacent three-way joints 2 from being torn and damaged due to extrusion force, and thus prolonging the service life of the airbag pad 10 and improving the use experience.

[0025] In this embodiment, the three-way joint 2 is in a T shape, including a side nozzle 7 connected to the air passage 6 and the front nozzle 3 and the rear nozzle 4 arranged separately in the front-to-back direction. The three-way joint 2 is connected to the air passage 6 through the side nozzle 7. The front nozzle 3 and the rear nozzle 4 are coaxially arranged and perpendicular to the axis of the side nozzle 7, so that adjacent three-way joints 2 can be arranged separately in the front-to-back direction and are connected by inserting and communicating through the corresponding front ports and rear ports, and thus the adjacent airbag strips 1 in the front and back are hermetically connected by inserting the corresponding front nozzles 3 and rear nozzles 4, ensuring that the air pressures in the adjacent airbag strips 1 can be synchronously adjusted.

[0026] In this embodiment, the front nozzle 3 and the rear nozzle 4 have different diameters, so that adjacent three-way joints 2 are inserted and sleeved through the corresponding front nozzle 3 and rear nozzle 4 and adhesively sealed. The front nozzle 3 and the rear nozzle 4 have straight sections with different diameters. The front nozzle 3 and the rear nozzle 4 are inserted and sleeved with each other to form an overlapping area with a larger width. By welding the overlapping area, a welding area with a larger width is formed. By increasing the width of the welding area, the connection sealing performance and reliability are improved, and the situation of air leakage is prevented. Specifically, the width of the overlapping welding area corresponding to the front nozzle 3 and the rear nozzle 4 is A, A≥5mm, and in a preferred solution, A = 7mm. The outer diameter of the front edge of the front nozzle 3 matches the inner diameter of the rear nozzle 4. During installation, the front nozzle 3 is inserted onto the corresponding rear nozzle 4, and the outer side wall of the front nozzle 3 is fitted and overlapped with the inner side wall of the rear nozzle 4 to form a welding area for welding and sealing. In addition, the inner diameter of the front edge of the front nozzle 3 matches the outer diameter of the rear nozzle 4. When the front nozzle 3 is sleeved on the corresponding rear nozzle 4, it should also be regarded as a specific implementation manner of this embodiment.

[0027] In this embodiment, the front nozzles 3 and the rear nozzles 4 of adjacent three-way joints 2 are axially inserted and overlapped and adhesively sealed through circumferential welding. The welding methods include ultrasonic welding and high-frequency welding, and both should be regarded as specific implementation manners of this embodiment.

[0028] In this embodiment, the cross-sectional profiles of the front nozzle 3, the rear nozzle 4, and the side nozzle 7 are all circular, so that each nozzle of the three-way joint 2 can meet the flow requirements and ensure that the air pressure in the airbag strip 1 can be quickly and accurately adjusted. In addition, the cross-sectional profiles of the front nozzle 3, the rear nozzle 4, and the side nozzle 7 can also be elliptical, which not only ensures that there is no deflection between the side nozzle 7 and the corresponding air passage 6, ensures that the axes of the front nozzle 3 and the rear nozzle 4 are horizontally arranged in the front-rear direction, but also ensures that the corresponding front nozzles 3 and rear nozzles 4 between adjacent three-way joints 2 can be hermetically inserted.

[0029] In this embodiment, both the front edge and the rear edge of the airbag strip 1 are formed with marking lines 8 by recesses (as Figure 3 shown). When adjacent airbag strips 1 are joined together in the front-rear direction, the corresponding marking lines 8 are vertically aligned, so that adjacent airbag strips 1 are arranged at equal distances in the front-rear direction and form an overlapping welding area with equal width. The marking lines 8 are formed by recesses. The areas of the front edge and the rear edge of the airbag strip 1 located outside the marking lines 8 form an overlapping area. When adjacent airbag strips 1 are joined together, the overlapping areas are overlapped with each other to form a strip-shaped welding area. Since the marking lines 8 coincide vertically, adjacent airbag strips 1 have a welding area with equal width, which not only ensures a constant distance between adjacent airbag strips 1, but also ensures that the welding area between adjacent airbag strips 1 meets the requirements for solid connection.

[0030] In this embodiment, grooves 9 are provided at the front edge and the rear edge of the airbag strip 1. When adjacent airbag strips 1 are joined together in the front-to-back direction, the corresponding grooves 9 form ventilation holes through joining. The marking line 8 is arranged in the groove 9. It can not only utilize the groove 9 to enclose and form ventilation holes, improve the air permeability of the airbag pad 10, reduce the raw material consumption, and lower the cost, but also facilitate the observation of the marking line 8, ensuring that the assembly personnel can accurately align the marking line 8 and ensure that the distance between adjacent airbag strips 1 is the same.

[0031] In this embodiment, the airbag strip 1 includes a plurality of unit airbags 5 arranged linearly (as Figure 4 shown), and the unit airbags 5 are connected by an air passage 6 laid along the length direction of the airbag strip 1. The end of the air passage 6 extends outward to form the three-way joint 2. The unit airbags 5 are arranged equidistantly in a straight line, ensuring that the distance between the unit airbags 5 is the same. Furthermore, it is convenient to form an airbag pad 10 with a matrix of unit airbags 5 through the joining of the airbag strips 1, which not only improves the use comfort but also facilitates assembly. The adjacent unit airbags 5 are connected by the air passage 6, so that the air pressures in the unit airbags 5 on the same airbag strip 1 can be synchronously adjusted. The adjacent airbag strips 1 are connected through the adjacent three-way joints 2, so that the air pressures in the adjacent airbag strips 1 can be synchronously adjusted. By connecting the airbag strips 1 in each partition on the airbag pad 10 in series, the air pressures in the airbag strips 1 in each partition can be synchronously adjusted, which not only simplifies the air circuit structure but also facilitates precise control and use.

[0032] Embodiment Two:

[0033] Compared with Embodiment One, this embodiment provides a mattress.

[0034] As Figure 5 shown, the mattress includes a mattress body, and the mattress body includes an airbag pad 10 and a limit block 11 that clamps and wraps the airbag pad 10. The limit block 11 plays a role in clamping, positioning, and protecting the airbag pad 10, ensuring that the airbag pad 10 is adjusted in hardness by inflating and deflating at a preset position, thereby improving the use comfort of the mattress body.

[0035] In this embodiment, perforations are provided on the limit block 11, and the number and positions of the perforations are in one-to-one correspondence with the unit airbags 5 on the airbag pad 10. During installation, the limit block 11 wraps the airbag pad 10, and the perforations are sleeved on the corresponding unit airbags 5, so that each unit airbag 5 is limited by the inner wall of the perforation, ensuring that the unit airbag 5 realizes vertical expansion and contraction under the guidance of the perforation, and then adjusts the softness and hardness by adjusting the air pressure, providing comfortable support for the user.

[0036] The other structures and effects of the airbag pad 10 in this embodiment are the same as those in Embodiment One and will not be elaborated here.

Claims

1. An airbag cushion, comprising airbag strips (1) closely arranged in the front-to-back direction, wherein the airbag strips (1) are communicated with the outside through three-way joints (2) provided at their ends, and the feature lies in that, The three-way joint (2) includes a front pipe orifice (3) arranged forward and a rear pipe orifice (4) arranged backward. The adjacent front pipe orifice (3) and rear pipe orifice (4) between adjacent three-way joints (2) are connected by being inserted and overlapped with each other, so that the adjacent three-way joints (2) are hermetically connected.

2. The airbag cushion according to claim 1, wherein The front pipe orifice (3) and the rear pipe orifice (4) have different diameters, so that the adjacent three-way joints (2) are inserted and connected through the corresponding front pipe orifice (3) and rear pipe orifice (4) and adhesively sealed.

3. The airbag cushion according to claim 2, characterized in that, The outer diameter of the outer edge of the front pipe orifice (3) matches the inner diameter of the inner edge of the rear pipe orifice (4), and the front pipe orifice (3) is inserted on the corresponding rear pipe orifice (4); or, the inner diameter of the inner edge of the front pipe orifice (3) matches the outer diameter of the outer edge of the rear pipe orifice (4), and the front pipe orifice (3) is sleeved on the corresponding rear pipe orifice (4).

4. An airbag cushion according to claim 1, characterized in that, The front pipe orifice (3) and the rear pipe orifice (4) of adjacent three-way joints (2) are axially inserted and overlapped and adhesively sealed through circumferential welding.

5. The airbag cushion according to claim 4, wherein, The width of the overlapping welding area corresponding to the front pipe orifice (3) and the rear pipe orifice (4) is A, and A≥5mm.

6. A airbag cushion according to any one of claims 1-5, characterized in that The airbag strip (1) includes a plurality of unit airbags (5) arranged linearly. The unit airbags (5) are connected by an air path channel (6) laid along the length direction of the airbag strip (1). The end of the air path channel (6) extends outward to form the three-way joint (2).

7. The airbag cushion according to claim 6, characterized in that, The three-way joint (2) is in a T shape and includes a side pipe orifice (7) connected to the air path channel (6), and a front pipe orifice (3) and a rear pipe orifice (4) arranged separately in the front-rear direction. The cross-sectional profiles of the front pipe orifice (3), the rear pipe orifice (4), and the side pipe orifice (7) are all circular or elliptical.

8. An airbag cushion according to any one of claims 1-5, characterized in that, Marking lines (8) are formed by depressions on both the front edge and the rear edge of the airbag strip (1). When adjacent airbag strips (1) are joined together in the front-rear direction, the corresponding marking lines (8) are vertically aligned, so that the adjacent airbag strips (1) are arranged at equal distances in the front-rear direction and form an overlapping welding area with equal width.

9. The airbag cushion according to claim 8, characterized in that, Grooves (9) are provided on both the front edge and the rear edge of the airbag strip (1). When adjacent airbag strips (1) are joined together in the front-rear direction, the corresponding grooves (9) are joined to form ventilation holes.

10. A mattress using the airbag pad according to any one of claims 1-9, comprising a pad body, characterized in that, The cushion body includes an airbag cushion (10) and a limiting block (11) that clamps and wraps the airbag cushion (10).

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