Air cushion and production process thereof

Abstract

The invention discloses an air cushion and a production process thereof. The production process of the air cushion comprises the following steps: S1, preparing a machine and a mold required by production; preparing an air inlet valve and an exhaust valve; preparing blanks of the fabric layer, the first air cushion layer, the second air cushion layer, the second structure layer and the like; s2, manufacturing a gas outlet valve; s3, stretching the second structure layer to form an accommodating cavity; s4, an air inlet valve, an exhaust valve and an air outlet valve are hot-melted on the first air cushion layer; s5, an elastic body is placed in the containing cavity, and the second structure layer is hot-melted to the first air cushion layer; s6, the first air cushion layer and the second air cushion layer are subjected to hot melting to form an air bag; and S7, performing hot melting on the fabric layer and the air bag to form the air cushion.

Description

Technical Field

[0001] The present invention relates to the technical field of air cushions, and in particular to an air cushion and a production process thereof. Background Art

[0002] As consumers have more and more requirements for pillows, the types of pillow structures and functions on the market are also more diverse. Some pillows on the market currently have the function of height adjustment, which is specifically achieved by setting an airbag in the pillow core and inflating and deflating the airbag to adjust the height of the pillow core. The current airbag is an airbag structure, but the existing inflatable pillows mostly have an external inflation pump or inflation valve as the inflation component, and this external inflation component is mostly a hard convex part, which is easy for users to touch during use, thus affecting the user experience.

[0003] For example, a Chinese patent document with publication number CN113827082A discloses a height-adjustable multi-purpose pillow. However, the pillow with this structure will cause the periphery to be lower than the middle height, and when a person lies on the pillow, even if the air bag is deformed by the gravity of the head, the middle is still higher than the periphery. Therefore, the pillow will have a small supporting area for the human head, causing discomfort to the user.

[0004] Based on the above problems, it is necessary to propose a new air cushion pillow and a production process of the air cushion pillow. The pillow can not only be inflated and deflated quickly, but its design structure not only meets ergonomics, but also the user will not touch the hard parts during use, thereby affecting the use experience. Summary of the invention

[0005] The present invention provides an air cushion, comprising a first air cushion layer and a second air cushion layer made of flexible and heat-fusible materials, wherein the first air cushion layer and the second air cushion layer are heat-fused to form an air bag, and an air valve assembly is provided on the air bag;

[0006] The air valve assembly includes a first structural layer and a second structural layer made of a flexible and heat-fusible material, wherein the first structural layer and the second structural layer are heat-fused to form a receiving cavity, and an elastic body for propping up the receiving cavity is arranged in the receiving cavity; more than one air outlet is reserved at the heat-fused seam; the air valve assembly also includes an air inlet valve providing a one-way air inlet passage for the receiving cavity and an air outlet valve provided at the air outlet to provide a one-way air outlet passage;

[0007] The air inlet valve is connected to the outside, and the air outlet valve is connected to the inside of the airbag;

[0008] The air cushion also includes an exhaust valve for exhausting air, the exhaust valve is arranged on the airbag, and the exhaust valve is connected to the outside;

[0009] One or more height-limiting drawstrings are provided inside the airbag, and two ends of the height-limiting drawstrings are connected to the first air cushion layer and the second air cushion layer respectively;

[0010] More than one fabric layer is arranged outside the airbag, and the fabric layer is connected with the first air cushion layer and the second air cushion layer by one-time hot-melt connection.

[0011] The present invention also provides a production process of an air cushion, comprising the following steps:

[0012] S1. Prepare the machines and molds required for production; prepare the air inlet valve and the exhaust valve; prepare the blanks of the fabric layer, the first air cushion layer, the second air cushion layer, and the second structural layer;

[0013] S2, manufacturing the air outlet valve;

[0014] S3, stretching the second structural layer to form a receiving cavity;

[0015] S4, hot-melting the air inlet valve, the air exhaust valve and the air outlet valve on the first air cushion layer;

[0016] S5, placing an elastic body in the accommodating cavity, and hot-melting the second structural layer onto the first air cushion layer;

[0017] S6, hot-melting the first air cushion layer and the second air cushion layer to form an air bag;

[0018] S7. Hot-melt the fabric layer and the airbag to form an air cushion.

[0019] The air cushion provided by the present invention can be inflated and deflated quickly. It can be inflated and deflated quickly by lightly pressing the inflation valve or the inflation pump. It is easy to operate, safe and reliable. Its design structure not only meets ergonomics, so that the user can adjust the inflation degree according to the user's preference when using it to achieve the best support effect, but also the user will not touch the hard part during use, thereby affecting the use feeling.

[0020] The production process of the air cushion provided by the present invention is simple, and the hot-melt technology can ensure that the various parts of the air cushion are firmly connected together, thereby improving the durability of the product. At the same time, the production process also has the advantages of high production efficiency and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the gas valve assembly in the invention application;

[0023] Figure 2It is a schematic diagram of the connection between the elastic body and the accommodating cavity in the invention application;

[0024] Figure 3 It is a connection diagram of the air inlet valve and the air outlet valve in the invention application;

[0025] Figure 4 It is a schematic diagram of the overall structure of the intake valve in the invention application;

[0026] Figure 5 It is a structural schematic diagram of the first valve body in the invention application;

[0027] Figure 6 It is a structural schematic diagram of the second valve body of the intake valve in the invention application;

[0028] Figure 7 It is a structural schematic diagram of the first valve in the invention application;

[0029] Figure 8 It is a structural schematic diagram of the air outlet valve in the invention application;

[0030] Fig. 9 It is a schematic diagram of the structure of the air inlet opening and the air outlet of the air outlet valve in the invention application;

[0031] Fig.10 It is a schematic diagram of the overall structure of the air cushion in the invention application;

[0032] Fig.11 It is a connection diagram of the gas valve assembly in the invention application;

[0033] Fig.12 It is a schematic diagram of the connection structure inside the airbag in the invention application;

[0034] Fig.13 It is a schematic diagram of the connection structure of the outside of the airbag in the invention application;

[0035] Fig.14 It is a schematic diagram of the structure of the handle and the elastic band in the invention application;

[0036] Fig.15 It is a schematic diagram of the structure of the airbag after being tied by the handle in the invention application;

[0037] Fig.16 It is a schematic diagram of the structure of the electrical components inside the airbag in the invention application;

[0038] Fig.17 It is a schematic diagram of the structure of the exhaust valve in the invention application;

[0039] Fig.18 It is a schematic diagram of the structure of the exhaust valve in the invention application;

[0040] Fig.19 It is a schematic diagram of the structure of the protective cover in the invention application;

[0041] Fig. 20 It is a schematic diagram of the structure of the protective cover in the invention application;

[0042] Fig.21 is a schematic diagram of step S1 in the invention application;

[0043] Fig. 22 is a schematic diagram of step S2 in the invention application;

[0044] Fig.23 is a schematic diagram of step S2 in the invention application;

[0045] Fig.24 is a schematic diagram of step S3 in the invention application;

[0046] Fig.25 It is a schematic diagram of the hot melt exhaust valve in step S4 of the invention application;

[0047] Fig.26 It is a schematic diagram of hot-melt air inlet valve in step S4 of the invention application;

[0048] Fig. 27 It is a schematic diagram of the hot melt outlet valve in step S4 of the invention application;

[0049] Fig.28 is a schematic diagram of step S5 in the invention application;

[0050] Fig.29 It is a schematic diagram of the hot-melt height-limiting pull belt in the invention application;

[0051] Fig.30 is a schematic diagram of step S6 in the invention application;

[0052] Fig.31 is a schematic diagram of step S6 in the invention application;

[0053] Fig.32 is a schematic diagram of step S7 in the invention application;

[0054] Fig.33 It is a schematic diagram of the overall structure of the air cushion in the invention application.

[0055] In the figure: air valve assembly (100); air cushion (200); first structural layer (1000); second structural layer (1001); accommodating cavity (1002); elastic body (1003); air outlet (1004); air inlet valve (2000); first valve body (2001); first main body (2101); first connecting part (2102); valve mounting hole (2103); air inlet hole (2104); lateral air inlet channel (2105); snap ring (2106) ; second valve body (2002); second main body (2201); concave cavity (2202); second connecting portion (2203); first air outlet channel (2204); flange (2205); first valve (2003); first valve cover (2301); first valve stem (2302); convex ring (2303); air outlet valve (3000); first valve plate (3001); second valve plate (3002); second air outlet channel (3003); air inlet opening (3004) ; air outlet opening (3005); first air cushion layer (4000); second air cushion layer (4001); air bag (4002); exhaust valve (4003); height limiting drawstring (4004); fabric layer (4005); handle (4006); metal buckle (4007); elastic band (4008); opening buckle (4009); third main body (4101); second valve (4102); exhaust hole (4103); third connecting part (4104); exhaust valve Plate (4105); raised portion (4106); buckle (4107); fourth connecting portion (4108); protective cover (4109); collar portion (4110); cover body portion (4111); fastening portion (4112); cover opening portion (4113); electrical component (5000); control mechanism (5001); power supply (5002); switch assembly (5003); adjustment assembly (5004); heating element (5005); and vibration element (5006). DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the orientation of the constituent elements being described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the circumstances.

[0059] As a preferred embodiment of the present invention, the present invention provides a gas valve assembly 100, such as Figure 1-Figure 2 As shown, it includes a first structural layer 1000 and a second structural layer 1001 made of a flexible and heat-meltable material, wherein the first structural layer 1000 and the second structural layer 1001 are heat-melted to form a receiving cavity 1002, and an elastic body 1003 for propping up the receiving cavity 1002 is arranged in the receiving cavity 1002; an air outlet 1004 is reserved at the heat-melting seam, and the first structural layer 1000 and the second structural layer 1001 are fixed together by a hot-melting process to form the receiving cavity 1002. The manufacturing process is simple and the production cost is effectively reduced. In addition, an elastic body 1003 for propping up the receiving cavity 1002 is arranged in the receiving cavity 1002, so that when the gas pressure is low, the receiving cavity 1002 will not collapse due to external pressure, thereby affecting the normal operation of the gas valve. The air outlet 1004 is reserved at the heat-melting seam, which can effectively control the flow of gas, so that the gas can be smoothly discharged from the receiving cavity when needed, thereby realizing the function of the gas valve.

[0060] In other embodiments (not shown in the figures), two air outlets are reserved at the heat-melt joint, or are configured in any other desired number to improve the gas flow efficiency. If one air outlet is blocked or fails, the other air outlets can still operate normally, thereby enhancing the stability and reliability of the system.

[0061] In other embodiments (not shown in the figure), the first structural layer 1000 and the second structural layer 1001 can be made of rubber material, which has good elasticity and good physical and mechanical properties, and also has good chemical stability. In other embodiments (not shown in the figure), the first structural layer 1000 and the second structural layer 1001 can also be made of thermoplastic polyurethane material, which has the characteristics of non-toxicity and safety, wide hardness range, excellent colorability, etc., and is widely used in life.

[0062] In other embodiments (not shown in the figures), a control device is added to the air valve assembly 100 to control the opening and closing of the air outlet, so that the flow of air can be controlled more accurately.

[0063] In this embodiment, if Figure 3 As shown, the air valve assembly 100 also includes an air inlet valve 2000 that provides a one-way air inlet channel for the accommodating chamber 1002 and an air outlet valve 3000 that is arranged at the air outlet 1004 and provides a one-way air outlet channel. The air inlet valve 2000 and the air outlet valve 3000 are both one-way air inlet or outlet, so that the gas can only enter or flow out of the accommodating chamber from one direction and cannot flow in the opposite direction, thereby ensuring the stability of the gas flow.

[0064] In other embodiments (not shown in the figures), control devices, such as solenoid valves or servo motors, are added to the inlet valve 2000 and the outlet valve 3000 to achieve precise control of the inlet and outlet air flows.

[0065] In this embodiment, if Figure 4-Figure 5 As shown, the intake valve 2000 comprises a first valve body 2001 and a second valve body 2002 made of hot-melt material; wherein the first valve body 2001 has a cylindrical first main body 2101, a first connecting portion 2102 extending radially outward is provided in the middle of the first main body 2101, a valve mounting hole 2103 and an intake hole 2104 are axially provided on the first main body 2101; a lateral intake channel 2105 is also provided at the upper part of the first main body 2101; a valve 2106 is provided at the lower part of the first main body 2101 for The retaining ring 2106 that fixes the second valve body 2002, the cylindrical design of the first valve body 2001 and the radial extension of the first connecting portion 2102 make the structure of the intake valve 2000 more stable, and also facilitate the installation and maintenance of the intake valve 2000. The arrangement of the intake hole 2104 and the lateral intake channel 2105 allows gas to enter from multiple directions, thereby improving the flexibility of gas flow; the retaining ring 2106 design allows the second valve body 2002 to be easily fixed on the first valve body 2001, thereby improving the stability of the assembly.

[0066] In this embodiment, if Figure 6As shown, the second valve body 2002 has a cylindrical second main body portion 2201, a concave cavity 2202 with an opening facing upward is provided on the second main body portion 2201, a second connecting portion 2203 extending radially outward is provided on the top of the concave cavity 2202, and a first air outlet channel 2204 is opened on the concave cavity 2202; the upward opening of the concave cavity 2202 and the arrangement of the first air outlet channel 2204 allow the gas to flow out from multiple directions, thereby improving the flexibility of the gas flow, and the upward opening design of the concave cavity 2202 can prevent the gas from flowing in the opposite direction, thereby avoiding possible safety risks.

[0067] In this embodiment, if Figure 7 As shown, the air intake valve 2000 further includes a first valve 2003, which is made of a flexible material. The first valve 2003 has a first valve cover 2301 that can cover the first air outlet channel 2204 and a first valve stem 2302 connected to the first valve cover 2301; when the air intake valve 2000 is assembled, the first valve stem 2302 is installed in the valve installation hole 2103; the lower part of the first valve body 2001 is installed in the concave cavity 2202, and the first main body 2101 is attached to the second main body 2201. In combination, the first valve 2003 is made of a flexible material, which enables the intake valve 2000 to maintain good sealing performance and reduce gas leakage when coping with various working conditions, such as pressure changes, temperature changes, etc., and the first valve 2003 has a first valve cover 2301 that can cover the intake hole 2104 and a first valve stem 2302 connected to the first valve cover 2301, so that the intake valve 2000 can quickly and accurately control the airflow when opening and closing, thereby improving the working efficiency of the intake valve 2000.

[0068] In other embodiments (not shown in the figures), the first valve 2003 can be made of hard plastic. Hard plastic has excellent wear resistance and impact resistance. Therefore, valves made of hard plastic can maintain stable performance under various working conditions, thereby increasing the service life of the valve. Hard plastic is usually cheaper and easier to process. Therefore, using valves made of hard plastic can reduce production costs.

[0069] In other embodiments (not shown in the figures), the first valve 2003 is configured as a rotary valve to provide different airflow control modes, thereby providing more control options to accommodate more types of applications.

[0070] In this embodiment, the valve mounting hole 2103 is arranged at the center of the first main body 2101; the number of air inlet holes 2104 is four, and the four air inlet holes 2104 are arranged around the valve mounting hole 2103; the number of lateral air inlet channels 2105 is four, and the four lateral air inlet channels 2105 correspond to the air inlet holes 2104 respectively; the valve mounting hole 2103 is arranged at the center of the first main body 2101. This centralized layout can make the valve more evenly stressed during operation and reduce valve damage caused by uneven stress. The number of air inlet holes 2104 is four, and the four air inlet holes 2104 are arranged around the valve mounting hole 2103, and by setting four lateral air inlet channels 2105 corresponding to the air inlet holes 2104, this design can allow gas to enter from multiple directions, thereby improving the air intake efficiency of the intake valve 2000.

[0071] In other embodiments (not shown in the figure), the air inlet holes 2104 can be set to five or any other desired number to provide a larger air inlet area, thereby improving the air inlet efficiency. In other embodiments (not shown in the figure), the lateral air inlet channels 2105 can be set to five or any other desired number and evenly distributed around the first main body 2101, thereby providing a more uniform airflow.

[0072] In this embodiment, the number of the first air outlet channels 2204 is four, three of which are arranged on the side wall of the concave cavity 2202, and the other is arranged at the bottom of the concave cavity 2202; a flange 2205 extending radially inward is arranged on the top of the concave cavity 2202, and the flange 2205 is used to resist the clamping ring 2106 to prevent the second valve body 2002 from separating from the first valve body 2001; the first valve 2003 is mushroom-shaped, and a convex ring 2303 is arranged on the first valve stem 2302, and the convex ring 2303 is used to prevent the first valve 2003 from slipping out of the valve mounting hole 2103. The distribution of the first air outlet channels 2204 can make the gas be discharged from multiple directions, thereby improving the gas outlet efficiency, and by arranging the flange 2205, the stability of the intake valve 2000 is improved to prevent it from detaching during use, and the convex ring 2303 is used to prevent the first valve 2003 from slipping out of the valve mounting hole 2103. Such a design can effectively prevent the valve from slipping out and improve the safety of the valve.

[0073] In other embodiments (not shown in the figures), the first air outlet channels 2204 may be configured as six or any other desired number, so as to improve the exhaust efficiency from the first air outlet channels 2204 .

[0074] In other embodiments (not shown in the figures), a convex ring is provided on the upper part and the lower part of the first valve stem 2302 , respectively, so as to further prevent the first valve 2003 from slipping out of the valve mounting hole 2103 .

[0075] In this embodiment, if Figure 8 As shown, the air outlet valve 3000 is formed by hot-melting a first valve plate 3001 and a second valve plate 3002 made of a flexible and hot-melt material. The first valve plate 3001 and the second valve plate 3002 are connected at opposite sides to form a second air outlet channel 3003 that is wide at both sides and narrow in the middle. One end of the second air outlet channel 3003 connected to the air outlet 1004 of the accommodating cavity 1002 is an air inlet opening 3004, and the other end is an air outlet opening 3005; at one end of the air outlet opening 3005, the first valve plate 3001 and the second valve plate 3002 are connected at the air valve assembly. The design of the second air outlet channel 3003 allows the gas to be quickly discharged from the channel which is wide on both sides and narrow in the middle, which can effectively improve the air outlet efficiency. The air outlet valve 3000 is made of a flexible and hot-melt material, which has good wear resistance and high temperature resistance, and can increase the service life of the valve. In addition, when the air valve assembly 100 is not inflated, the first valve plate 3001 and the second valve plate 3002 are in contact with each other, which can effectively prevent gas leakage and improve the sealing of the valve.

[0076] In other embodiments (not shown in the figures), the second gas outlet channel 3003 has a cylindrical structure, thereby reducing the resistance to gas flow and allowing the gas to pass through the channel more smoothly.

[0077] In other embodiments (not shown in the figure), the first valve disc 3001 and the second valve disc 3002 can be made of silicone material. Silicone has excellent heat resistance and cold resistance, and can maintain its physical properties in various temperature environments. In addition, silicone also has good aging resistance and will not harden or crack even after long-term use. Therefore, the valve disc made of silicone can provide excellent sealing performance and long-term durability.

[0078] In other embodiments (not shown in the figure), the first valve sheet 3001 and the second valve sheet 3002 may also be made of rubber material, which is a commonly used valve sheet material with good elasticity and flexibility. The rubber valve sheet can quickly return to its original state when the pressure changes, thereby providing good sealing performance. In addition, the rubber valve sheet also has good wear resistance and corrosion resistance, and can maintain its performance in various harsh environments.

[0079] In this embodiment, if Fig. 9As shown, the width of the air inlet opening 3004 of the air outlet valve 3000 is greater than the width of the air outlet 1004 of the air valve assembly 100, so that there is more space for gas when entering the air outlet valve 3000, thereby improving the fluidity of the gas, and the width of the air inlet opening 3004 is greater than the width of the air outlet 1004, which will form a pressure difference, so that the gas produces a natural pressure regulation effect when passing through the valve, which helps to control the flow rate and flow of the gas. In addition, the width of the air inlet opening 3004 is greater than the width of the air outlet 1004, which can also effectively prevent gas backflow and improve the sealing of the valve.

[0080] In this embodiment, the elastomer 1003 is a sponge, which is disposed in the accommodating cavity 1002. When inflation is required, the sponge is pressed, and the sponge rebounds after being pressed to reopen the accommodating cavity 1002. Inflation can be achieved by pressing the sponge, and the operation is simple and convenient. The sponge is a durable material that can withstand repeated pressing and rebounding and has a long service life.

[0081] In other embodiments (not shown), the elastic body 1003 can be made of polyurethane foam, which is a lightweight, highly elastic material with good wear resistance and aging resistance. Polyurethane foam elastomer can quickly return to its original shape after being compressed, so it is an ideal material for making elastomers.

[0082] As a preferred embodiment of the present invention, the present invention also provides an air cushion 200, including providing an air valve assembly 100, such as Figure 1-Figure 2 As shown, the air valve assembly 100 includes a first structural layer 1000 and a second structural layer 1001 made of flexible and heat-meltable materials, wherein the first structural layer 1000 and the second structural layer 1001 are heat-fused to form a receiving cavity 1002, and an elastic body 1003 is arranged in the receiving cavity 1002 for supporting the receiving cavity 1002; more than one air outlet 1004 is reserved at the heat-melt seam; the air valve assembly 100 also includes an air inlet valve 2000 providing a one-way air inlet channel for the receiving cavity 1002 and an air outlet valve 3000 provided at the air outlet 1004 to provide a one-way air outlet channel.

[0083] In this embodiment, if Fig.10 As shown, the air cushion 200 includes a first air cushion layer 4000 and a second air cushion layer 4001 made of flexible and heat-fusible materials. The first air cushion layer 4000 and the second air cushion layer 4001 are heat-fused to form an airbag 4002; the air valve assembly 100 is arranged on the airbag 4002, and the airbag 4002 can provide a good cushioning effect and increase the comfort during use. Since the first air cushion layer 4000 and the second air cushion layer 4001 are formed by heat-melting, when the air cushion needs to be replaced or repaired, the air cushion layers can be easily separated by heating, which can reduce the difficulty and cost of maintenance.

[0084] In this embodiment, if Fig.11 As shown, the air inlet valve 2000 of the air valve assembly 100 is connected to the outside, and the air outlet valve 3000 of the air valve assembly 100 is connected to the inside of the airbag 4002; the air cushion 200 also includes an exhaust valve 4003 for exhausting air, and the exhaust valve 4003 is arranged on the airbag 4002, and the exhaust valve 4003 is connected to the outside; the air inlet valve 2000 is connected to the outside, which makes inflation simple and convenient, and the air outlet valve 3000 is connected to the inside of the airbag 4002, and gas can be sent into the inside of the airbag 4002 to make the airbag 4002 swell, and the exhaust valve 4003 is arranged on the airbag 4002 and connected to the outside, and the gas in the airbag 4002 can be quickly discharged, so that the air cushion 200 can be quickly folded up when not in use, which is convenient to carry.

[0085] In this embodiment, if Fig.12 As shown, two height limiting straps 4004 are provided inside the airbag 4002, and the two ends of the height limiting straps 4004 are respectively connected to the first air cushion layer 4000 and the second air cushion layer 4001; by providing the height limiting straps 4004, the height of the airbag 4002 can be effectively controlled. When the airbag 4002 is inflated, the height limiting straps 4004 can prevent the airbag 4002 from over-expanding, thereby maintaining the stability of the airbag 4002. The two ends of the height limiting straps 4004 are respectively connected to the first air cushion layer 4000 and the second air cushion layer 4001, thereby enhancing the structural stability of the airbag 4002 and preventing the airbag 4002 from deformation during use.

[0086] In this embodiment, if Fig.13 As shown, a three-layer fabric layer 4005 is provided outside the airbag 4002, and the fabric layer 4005 is connected to the first air cushion layer 4000 and the second air cushion layer 4001 by one-time hot melt. An elastic handle 4006 is also provided on one side of the air cushion 200. Figure 14-15 As shown, the handle 4006 is connected to one side of the air cushion 200 by sewing, wherein a metal buckle 4007 is further provided at the sewing portion between the handle 4006 and the air cushion 200, which is connected by hot melting, thereby improving the durability of the air cushion 200, and the fabric layer 4005 can provide a more comfortable touch. By providing the handle 4006, it can be convenient for the user to carry it outside. When in use, the handle 4006 is used to lift the air cushion 200, and when stored, the handle 4006 is used to bundle the deflated air cushion 200.

[0087] In this embodiment, the air cushion 200 also includes a detachable elastic band 4008, one end of the elastic band 4008 is connected to the handle 4006 via an open buckle 4009, and the other end of the elastic band 4008 is connected to the air cushion 200 via the open buckle 4009. The elastic band 4008 can help the air cushion 200 to be more stably fixed in place to prevent sliding or moving during use. The user can easily install or remove the elastic band 4008 as needed, making the use of the air cushion 200 more flexible and convenient.

[0088] In other embodiments (not shown in the figures), four layers of fabric layers 4005 are provided on the outside of the airbag 4002, or are configured in any other desired number, so as to further improve the durability and comfort of the air cushion.

[0089] In other embodiments (not shown in the figures), the fabric layer 4005 can be made of cotton material. Cotton is a natural fiber with good moisture absorption and breathability. The cotton fabric layer can provide a soft and comfortable touch, while also helping to wick away sweat and dissipate heat, so that the air cushion can remain comfortable even in hot weather.

[0090] In other embodiments (not shown in the figures), the fabric layer 4005 can also be made of silk material. Silk is a natural fiber with a smooth surface and good luster. The silk fabric layer can provide an extremely smooth touch, making the air cushion appear more upscale. At the same time, silk also has good thermal insulation properties, so that the air cushion can stay warm even in cold weather.

[0091] In this embodiment, the second structural layer 1001 is directly hot-melt connected to the first air cushion layer 4000 to form an accommodating cavity 1002, and the air outlet valve 3000 and the air inlet valve 2000 are directly hot-melt on the first air cushion layer 4000, thereby making the entire structure more compact and reducing unnecessary space. The direct hot-melt connection can provide stronger connection strength, making the connection between the various components more stable, improving the stability of the entire structure, simplifying the manufacturing process, reducing the manufacturing difficulty, and also reducing the manufacturing cost.

[0092] In this embodiment, if Fig.16As shown, the airbag 4002 is formed into a shape that is high in the middle and low around; the two sides of the airbag 4002 along the length direction are concave toward the middle, forming a shape that is wide at both ends and narrow in the middle. An electrical component 5000 is arranged inside the airbag 4002. The electrical component 5000 includes a control mechanism 5001 and a power supply 5002 electrically connected to the control mechanism 5001, wherein the control mechanism 5001 includes a switch component 5003 and an adjustment component 5004, and the electrical component 5000 also includes a heating element 5005 and a vibration element 5006. The adjustment component 5004 controls the heating element 5005 and the vibration element 5006. By arranging the electrical component 5000, the air cushion 200 can have more functions to meet the different needs of users. By arranging the heating element 5005 and the vibration element 5006, the appropriate temperature and vibration frequency can be adjusted according to the different needs of the user, providing the user with a better experience.

[0093] In this embodiment, if Figure 17-Figure 18 As shown, the exhaust valve 4003 has a cylindrical third main body part 4101 and a second valve 4102, and the third main body part 4101 is provided with an exhaust hole 4103 arranged along the length direction; a third connecting part 4104 extending radially outward is provided at the bottom of the third main body part 4101, and the third connecting part 4104 is hot-melt connected to the airbag 4002. The hot-melt connection can ensure a tight connection between the airbag 4002 and the exhaust valve 4003, thereby preventing gas leakage.

[0094] In this embodiment, the second valve 4102 is made of elastic material, and has an exhaust valve plate 4105 that can close the exhaust hole 4103, and a protrusion 4106 for pressing is provided on the exhaust valve plate 4105; a buckle 4107 is provided at the bottom of the third connecting portion 4104, and the exhaust valve plate 4105 is connected to the buckle 4107; a fourth connecting portion 4108 extending radially outward is provided at the top of the third connecting portion 4104, and a protective cover 4109 is sleeved on the fourth connecting portion 4108. By providing the buckle 4107, the exhaust valve plate 4105 and the third connecting portion 4104 are more firmly connected, so that the exhaust valve 4003 has a more stable and firm structure, which effectively prevents the exhaust valve 4003 from accidentally opening during use. By providing the protective cover 4109, the sealing of the airbag 4002 can be improved to prevent gas from being discharged. In addition, the protective cover 4109 can also protect the exhaust valve 4003 from being affected by the external environment, thereby improving the service life of the product.

[0095] In other embodiments (not shown in the figure), the second valve 4102 is made of metal material to improve the durability and stability of the exhaust valve 4003. In other embodiments (not shown in the figure), a pressure sensor is added to the second valve 4102 to monitor the pressure in the airbag in real time. When the pressure in the airbag exceeds a set value, the pressure sensor can automatically open the second valve 4102 to prevent the airbag 4002 from rupturing.

[0096] In this embodiment, if Figure 19-20 As shown, the protective cover 4109 includes a collar portion 4110 and a cover body portion 4111 which are connected to each other. The collar portion 4110 is a flat ring. The collar portion 4110 is sleeved on the third connecting portion 4104 and is restricted by the fourth connecting portion 4108; thereby, the protective cover 4109 is stably fixed on the exhaust valve 4003 to prevent the protective cover 4109 from sliding or falling off during use.

[0097] In this embodiment, a fastening portion 4112 with an annular protrusion is provided at the lower portion of the cover body 4111. The fastening portion 4112 can cooperate with the third main body portion 4101 to close the exhaust valve 4003. A cover-opening portion 4113 is also provided at the edge of the cover body 4111. By providing the fastening portion 4112, gas leakage can be effectively prevented, thereby improving the performance and efficiency of the airbag 4002.

[0098] As a preferred embodiment of the present invention, the present invention also provides a production process of the air cushion 200 . The production process includes the following steps: S1, preparing the machines and molds required for production; preparing the air inlet valve 2000 and the exhaust valve 4003; preparing the blanks of the fabric layer 4005, the first air cushion layer 4000, the second air cushion layer 4001 and the second structural layer 1001; S2, manufacturing the air outlet valve 3000; S3, stretching the second structural layer 1001 to form a receiving cavity 1002; S4, hot-melting the air inlet valve 2000, the exhaust valve 4003 and the air outlet valve 3000 on the first air cushion layer 4000; S5, placing the elastomer 1003 in the receiving cavity 1002, and hot-melting the second structural layer 1001 to the first air cushion layer 4000; S6, hot-melting the first air cushion layer 4000 and the second air cushion layer 4001 to form the airbag 4002; S7, hot-melting the fabric layer 4005 and the airbag 4002 to form an air cushion.

[0099] Specifically, in step S1, refer to Fig.21 As shown, the specific operations are:

[0100] A1: Prepare the materials for fabric layer 4005, which are generally 3-5mm thick porous sponge S100-3, four-way stretchable lycra or leather S100-4, and plush fabric S100-1 with nylon content of more than 50%. Apply hot melt adhesive S100-2 evenly on one side of the inner surface of the plush fabric with nylon content of more than 50%, cover the lower surface of the porous sponge on the inner surface of the plush fabric with nylon content of more than 50% already coated with hot melt adhesive, and then apply hot melt adhesive evenly on the upper surface of the porous sponge, cover the lower surface of the lycra or leather with the upper surface of the porous sponge coated with hot melt adhesive, and you can get the processed material.

[0101] A2: Place the processed material in A1 on a laminating machine for lamination and then place for more than 20 hours to cool naturally. Then S100 can be obtained. S100 is the fabric layer 4005.

[0102] Further, in step S2, refer to Fig. 22 and Fig.23 As shown, the gas valve 3000 is manufactured in a dust-free environment. The specific operations are:

[0103] A3: Cut the 0.1mm or 0.2mm double-gloss TPU coil into 1370mm*50mm strips S200, then wipe the TPU strips with cashmere cloth dampened with alcohol to remove dust, then spray bactericidal and antibacterial liquid and let them dry;

[0104] A4: Take the two TPU strips processed in A3, align the edges and stack them together, use a rolling rod to remove the bubbles, make the two TPU strips fit tightly together, and set them aside for later use;

[0105] A5: Fix the mold M100 to the movable head of the high-frequency equipment, adjust the gap between the mold M100 and the fixed metal platform to 0.2-0.5mm, set the welding working time between 2-4 seconds, and the high-frequency current between 2-3A. Place the TPU strip processed by A4 on the fixed metal platform, operate the high-frequency equipment correctly, weld the two pieces of TPU together, and repeat the operation until the whole TPU is welded together to obtain S300;

[0106] A6: Take the processed TPU strip of A5 and place it on the sliding platform of the cutting table. Put the customized knife die D2 on the strip, with the blade facing the material to be cut. Set the cutting table depth between 0.2-0.25mm and the rising height between 1.5-2sec. Operate the cutting table correctly to cut the hot-melt TPU strip S300 into single outlet valves 3000 and collect them for later use.

[0107] A7: Take a roll of 40mm wide and 0.2mm thick PE hard plastic coil, fix it on the computerized tape cutter, set the cutting length to 7-15mm, keep the cutting head at room temperature, operate the equipment correctly, and cut automatically until the whole roll of material is cut completely to obtain S500;

[0108] A8: Take a piece of the outlet valve 3000 processed by A6 and a piece of the PE hard plastic sheet S500 cut by A7, insert the PE hard plastic sheet into the air passage reserved in the outlet valve 3000, and collect S600 for later use.

[0109] Further, in step S3, refer to Fig.24 As shown, the second structural layer 1001 is stretched to form the accommodating cavity 1002. The specific operation is:

[0110] A9: Fix the upper mold M200-S and lower mold M200-X of the forming mold to the upper and lower platforms of the hydraulic press with heating function respectively, set the heating temperature between 100-120°, the setting time between 50-300 seconds, the pressure of 20 tons, the working mode is manual mode, operate the hydraulic press to close the mold, and start heating the mold. The specific temperature depends on the material;

[0111] A13: After the mold temperature reaches the set temperature, operate the hydraulic press to separate the molding die, place the cut room temperature material S700 in the corresponding groove of the lower mold M200-X of the molding die, operate the hydraulic press correctly, close the molding die, and during the mold closing process, the steel nails of the upper mold M200-S first pierce the upper fabric of the airbag to prevent it from shrinking and causing defective products during the mold closing process;

[0112] A14: After the molding time reaches the set value, the hydraulic press automatically separates the upper mold M200-S and the lower mold M200-X of the molding mold. During the mold separation process, the steel plate M200-Z of the automatic demolding structure of the upper mold M200-S separates the formed second structural layer 1001 from the upper mold under the thrust of the spring, and takes out and obtains the formed second structural layer 1001, which includes one or more accommodating cavities 1002.

[0113] Further, in step S4, the exhaust valve 4003, the air inlet valve 2000 and the air outlet valve 3000 are respectively hot-melted on the first air cushion layer 4000.

[0114] See also Fig.25 As shown, the hot melt exhaust valve 4003, the specific operation is:

[0115] A15: Fix the welding exhaust valve tool G1-S on the movable head of the high-frequency equipment, fix G1-X on the fixed metal platform, and adjust the gap between the tool G1-S and G1-X to between 0.5-0.8mm;

[0116] A16: Place the exhaust valve on the hole of the tooling G1-X, and then put the corresponding hole of the cut first air cushion layer 4000 on the exhaust valve 4003, set the welding working time to between 2-4 seconds, set the high-frequency current to between 2-3A, operate the high-frequency equipment correctly, and weld the exhaust valve 4003 and the first air cushion layer 4000 firmly to obtain S1000;

[0117] See also Fig.26 As shown, hot melt air inlet valve 2000, the specific operation is:

[0118] A17: Fix the tool G2-S for welding the intake valve 2000 on the movable head of the high-frequency equipment, fix G2-X on the fixed metal platform, and adjust the gap between the tool G2-S and G2-X to between 0.5-0.8mm;

[0119] A18: Place the air intake valve 2000 on the hole of the tool G2-X, and then put the corresponding hole of the cut first air cushion layer 4000 on the air intake valve 2000, set the welding working time to between 2-4 seconds, set the high-frequency current to between 2-3A, operate the high-frequency equipment correctly, and weld the air intake valve 2000 and the first air cushion layer 4000 firmly to obtain S1100;

[0120] See also Fig. 27 As shown, the hot melt outlet valve 3000, the specific operation is:

[0121] A19: Fix the tooling G3 of the welding outlet valve 3000 on the movable head of the high-frequency equipment, adjust the gap between the tooling G3 and the fixed metal platform to between 0.5-0.8mm, set the welding working time to between 2-4 seconds, and the high-frequency current to between 2-3A;

[0122] A20: Place S1100 at a designated position on the fixed metal platform of the high-frequency equipment, and then place the outlet valve 3000 manufactured in step S2 at a designated position on the upper surface of S1100. Operate the high-frequency equipment correctly to firmly weld the outlet valve 3000 to S1100 to obtain S1200.

[0123] Further, in step S5, refer to Fig.28 As shown, an elastic body 1003 is placed in the accommodating cavity 1002, and the second structural layer 1001 is hot-melted onto the first air cushion layer 4000. The specific operation is:

[0124] A21: Fix the mold M300 to the movable head of the high-frequency equipment, lower the movable head, adjust the gap between the mold M300 and the fixed metal platform to between 0.8-1.2mm, set the welding working time to between 2-5 seconds, and the high-frequency current to between 2-3A;

[0125] A22: Place the S1200 obtained in step S4 at a designated position on the fixed metal platform of the high-frequency equipment, with the side of the welded gas outlet valve 3000 facing upward;

[0126] A23: Place the elastic body 1003 into the inner side of the accommodating cavity 1002, and then cover the position specified in S1200;

[0127] A24: Operate the high-frequency equipment correctly to weld the second structural layer 1001 and one side of the first air cushion layer 4000 together. After the welded position cools down, take out the PE hard plastic sheet S500, and then operate the high-frequency equipment again to weld the other three sides of the second structural layer 1001 firmly to obtain S1400.

[0128] Further, before executing step S6, refer to Fig.29 As shown, it is necessary to heat-melt one or more height-limiting drawstrings 4004 between the first air cushion layer 4000 and the second air cushion layer 4001. The specific operation is:

[0129] A25: Take two pieces of height-limiting drawstrings 4004 made of the same material as the air cushion 200, and weld their two ends to the designated positions on the inner side of the first air cushion layer 4000 and the inner side of the second air cushion layer 4001, respectively, to obtain S1700, which has two functions: one is to limit the height of the airbag after inflation, and the other is to make the shape of the airbag more beautiful.

[0130] Further, in step S6, refer to Fig.30 and Fig.31 As shown, the first air cushion layer 4000 and the second air cushion layer 4001 are hot-melted to form the air bag 4002. The specific operation is:

[0131] A26: Fix the mold M400-S to the lifting head of the high-frequency equipment, and fix the mold M400-X on the sliding metal platform. Set the welding time to 10 seconds, the cooling time to 15 seconds, the current to 3-5A, and the working mode to automatic mode;

[0132] A27: Place the S1700 obtained in A25 on the mold M400-X, with the second air cushion layer 4001 facing downward, and align the holes of the second air cushion layer 4001 and the first air cushion layer 4000 with the nails of the mold M400-X one by one.

[0133] A28: Correctly operate the high-frequency equipment to weld and seal the second air cushion layer 4001 and the first air cushion layer 4000 to obtain S1800, which is the airbag 4002.

[0134] In this step, the equipment has upper and lower platforms with cooling function, and the cooling function is realized by an aluminum plate with cooling water path. The aluminum plate has water inlet and outlet as well as fixing holes connected to the water cooler. The water cooler controls the temperature of the aluminum plate by controlling the temperature of the circulating water, so as to achieve the purpose of cooling the mold.

[0135] In some embodiments (not shown in the figure), the aluminum plate with cooling water channels is directly opened on the mold M400-S or the mold M400-X. In another embodiment (not shown in the figure), the aluminum plate with cooling water channels can also be an independent component, and the aluminum plate is attached to the mold M400-S or the mold M400-X.

[0136] Further, in step S7, refer to Fig.32 As shown, the fabric layer 4005 and the airbag 4002 are hot-melted to form the air cushion 200. The specific operation is:

[0137] A29: Place the composite material S100 prepared in A2 on the sliding platform of the cutting table, adjust the cutting depth to 0.2mm, the cutting force to 10 tons, the cutting time to 2 seconds, operate the cutting table correctly, and obtain the cut surface material S1900;

[0138] A30: Fix the mold M500 to the sliding metal platform with a high-frequency device with cutting function, set the welding time to 10-20 seconds, the cooling time to 10-30 seconds, the current to 3-5A, the cutting time to 2 seconds, and the working mode to automatic mode;

[0139] A31: Put a piece of S1900 into the mold M500, with the fabric side facing down, and align the holes with the nails of M500 one by one; then put S1800 on S1900, and align the holes with the nails of M500 one by one; finally, take another piece of S1900 and put it on S1800, and align the holes with the nails of M500 one by one;

[0140] A32: Correctly operate the high-frequency equipment to obtain the semi-finished product S2000 of the air cushion.

[0141] In this embodiment, during the A31 process, the surface material S1900 on one side of the exhaust valve 4003 may also have a plush surface as the outer surface, and the plush surface may be adhered to a Velcro hook surface, so that the airbag can be adhered to a structure with a Velcro hook surface to meet the needs of different scenarios.

[0142] In this embodiment, this production process is called edgeless melting and cutting technology. The mold M500 is made of titanium alloy imported from Japan and heat-treated and finely carved. Under the action of high-frequency electromagnetic field, materials with nylon content of more than 50% undergo molecular polarization and are arranged in the direction of the electromagnetic field. The high-frequency electromagnetic field causes the molecules to change direction at a very fast speed. The material heats up due to dielectric loss to achieve fusion, and achieves the effect of welding and cutting under the action of pressure and mold. This product does not require traditional sewing and hemming, making the product appearance simpler, softer and more comfortable.

[0143] Further, after completing step S7, refer to Fig.33 As shown, after the semi-finished air cushion 200 is obtained, an elastic handle 4006 is sewn on the side of the air cushion 200. The handle 4006 is made of an elastic woven belt and can be used as a handle or for storage.

[0144] In another embodiment (not shown in the figure), an elastic woven belt is sewn on the side of the air cushion 200, and a "9" hook structure is provided at the other end of the woven belt. A ring-shaped buckle is provided on the other side of the airbag for the "9" hook structure to fasten. This structure can be used to store the airbag and can be used as a handle to fix the airbag to the seat.

[0145] In some embodiments (not shown in the figure), the air cushion 200 can be optionally equipped with a massage unit. The massage unit can be powered by a built-in power supply or an external power supply. The massage unit can be fixed between the fabric layer 4005 and the second air cushion layer 4001, or fixed on the inside of the airbag 4002. When installing and fixing the massage unit, a piece of elastic material for shock absorption and noise reduction is placed on its lower side. The operation methods include physical button operation and mobile phone APP operation. The physical buttons are sewn on the fabric layer 4005.

[0146] In other embodiments (not shown in the figures), the air cushion 200 can be optionally equipped with a heating element 5005. The heating element 5005 can be powered by a built-in power supply or an external power supply. The electric heating component is fixed between the fabric layer 4005 and the second air cushion layer 4001. The operation methods include physical button operation and mobile phone APP operation. The physical buttons are sewn on the fabric layer 4005.

[0147] In summary, the present invention can achieve rapid inflation and deflation. By repeatedly pressing the elastomer 1003 in the accommodating chamber 1002, the external gas can be filled into the airbag 4002. The exhaust valve 4003 can seal and discharge the gas in the airbag 4002 to achieve the function of adjusting the hardness of the air cushion 200. The air cushion 200 of the present invention is easy to operate, safe and reliable. At the same time, its design structure not only meets ergonomics, but also the user can adjust the inflation degree according to the user's preference when using it, so as to achieve the best support effect and improve the user's experience.

[0148] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. An air cushion (200), characterized in that: The invention comprises a first air cushion layer (4000) and a second air cushion layer (4001) made of flexible and heat-fusible materials, wherein the first air cushion layer (4000) and the second air cushion layer (4001) are heat-fused to form an air bag (4002), and an air valve assembly (100) is provided on the air bag (4002); The air valve assembly (100) comprises a first structural layer (1000) and a second structural layer (1001) made of flexible and heat-fusible materials, wherein the first structural layer (1000) and the second structural layer (1001) are heat-fused to form a receiving cavity (1002), and an elastic body (1003) is arranged in the receiving cavity (1002) for propping up the receiving cavity (1002); more than one air outlet (1004) is reserved at the heat-fused seam; the air valve assembly (100) further comprises an air inlet valve (2000) providing a one-way air inlet passage for the receiving cavity (1002) and an air outlet valve (3000) provided at the air outlet (1004) for providing a one-way air outlet passage; The air inlet valve (2000) is in communication with the outside, and the air outlet valve (3000) is in communication with the interior of the air bag (4002); The air cushion (200) further comprises an exhaust valve (4003) for exhausting air, wherein the exhaust valve (4003) is arranged on the air bag (4002), and the exhaust valve (4003) is in communication with the outside; One or more height-limiting drawstrings (4004) are provided inside the airbag (4002), and two ends of the height-limiting drawstrings (4004) are respectively connected to the first air cushion layer (4000) and the second air cushion layer (4001); One or more fabric layers (4005) are further provided on the outside of the airbag (4002), and the fabric layers (4005) are connected to the first air cushion layer (4000) and the second air cushion layer (4001) by one-time hot-melt connection.

2. The air cushion (200) according to claim 1, characterized in that: The second structural layer (1001) is directly connected to the first air cushion layer (4000) by heat-melting to form the accommodating cavity (1002), and the air outlet valve (3000) and the air inlet valve (2000) are directly heat-melted on the first air cushion layer (4000); The airbag (4002) is formed in a shape with a high middle portion and low surrounding portions; the airbag (4002) is concave toward the middle portion at both sides along the length direction, forming a shape with wide ends and a narrow middle portion.

3. The air cushion (200) according to claim 1, characterized in that: The air cushion (200) further comprises an elastic handle (4006); when in use, the handle (4006) is used to lift the air cushion (200); when stored, the handle (4006) is used to tie up the deflated air cushion (200); The air cushion (200) further comprises a detachable elastic band (4008), one end of the elastic band (4008) being connected to the handle (4006) via an open buckle (4009), and the other end of the elastic band (4008) being connected to the air cushion (200) via the open buckle (4009).

4. The air cushion (200) according to claim 1, characterized in that: An electrical component (5000) is arranged inside the airbag (4002), and the electrical component (5000) includes a control mechanism (5001) and a power supply (5002) electrically connected to the control mechanism (5001), wherein the control mechanism (5001) includes a switch component (5003) and an adjustment component (5004), and the electrical component (5000) also includes a heating element (5005) and a vibration element (5006), and the adjustment component (5004) controls the heating element (5005) and the vibration element (5006).

5. The air cushion (200) according to claim 4, characterized in that: The exhaust valve (4003) comprises a cylindrical third main body (4101) and a second valve (4102), wherein the third main body (4101) is provided with an exhaust hole (4103) arranged along the length direction; a third connecting portion (4104) extending radially outward is provided at the bottom of the third main body (4101), and the third connecting portion (4104) is connected to the airbag (4002) by hot melt; The second valve (4102) is made of elastic material, and has an exhaust valve plate (4105) capable of closing the exhaust hole (4103), and a protrusion (4106) for pressing is provided on the exhaust valve plate (4105); a buckle (4107) is provided at the bottom of the third connecting portion (4104), and the exhaust valve plate (4105) is connected to the buckle (4107); a fourth connecting portion (4108) extending radially outward is provided at the top of the third connecting portion (4104), and a protective cover (4109) is provided on the fourth connecting portion (4108); The protective cover (4109) includes a collar portion (4110) and a cover body portion (4111) which are connected to each other, wherein the collar portion (4110) is in the shape of a flat ring, and the collar portion (4110) is sleeved on the third connecting portion (4104) and is restricted by the fourth connecting portion (4108); a fastening portion (4112) with an annular protrusion is provided at the lower portion of the cover body portion (4111), and the fastening portion (4112) can cooperate with the third main body portion (4101) to close the exhaust valve (4003), and a cover-opening portion (4113) is also provided on the edge of the cover body portion (4111).

6. A production process for an air cushion, characterized in that: The following steps are involved: S1. Prepare the machines and molds required for production; prepare the air inlet valve (2000) and the air exhaust valve (4003); prepare the blanks of the fabric layer (4005), the first air cushion layer (4000), the second air cushion layer (4001) and the second structural layer (1001); S2, manufacturing an air outlet valve (3000); S3, stretching the second structural layer (1001) to form a receiving cavity (1002); S4, hot-melting an air inlet valve (2000), an air exhaust valve (4003) and an air outlet valve (3000) on the first air cushion layer (4000); S5, placing the elastic body (1003) in the accommodating cavity (1002), and hot-melting the second structural layer (1001) onto the first air cushion layer (4000); S6, hot-melting the first air cushion layer (4000) and the second air cushion layer (4001) to form an air bag (4002); S7, hot-melt the fabric layer (4005) and the airbag (4002) to form an air cushion.

7. The production process of the air cushion according to claim 6, characterized in that: The materials for preparing the fabric layer (4005) in S1 are 3-5 mm porous sponge, four-way stretchable Lycra or leather and plush fabric with a nylon content of more than 50%; hot melt adhesive is evenly coated on one side of the inner surface of the plush fabric, the lower surface of the porous sponge is covered on one side of the inner surface of the plush fabric coated with hot melt adhesive, and then hot melt adhesive is coated on the upper surface of the porous sponge, and Lycra or leather is covered on the upper surface of the porous sponge; the above materials are then placed on a laminating machine for lamination.

8. The process for producing an air cushion according to claim 64, characterized in that: The steps of manufacturing the gas valve (3000) in S2 are: In a dust-free environment, cut the 0.1mm-0.2mm double-gloss TPU coil into long strips, then remove dust, sterilize and dry; Stack the two TPU strips together so that they fit tightly together and set aside; Use a mold to weld two pieces of TPU together through a high-frequency device; The hot-melted TPU strips are cut into individual air outlet valves (3000).

9. The production process of the air cushion according to claim 6, characterized in that: Before S6, one or more height-limiting drawstrings (4004) are heat-melted between the first air cushion layer (4000) and the second air cushion layer (4001).

10. The production process of the air cushion according to claim 6, characterized in that: After S7, elastic handles (4006) and / or elastic bands (4008) are sewn on the sides of the air cushion (200).

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