Air cushion and production process therefor

Abstract

An air cushion (200) and a production process therefor. The production process comprises the following steps: S1, preparing a machine and a mold required for production, preparing an air intake valve (2000) and an exhaust valve (4003), and preparing blanks of, for example, a fabric layer (4005), a first air-cushion layer (4000), a second air-cushion layer (4001), and a second structural layer (1001); S2, manufacturing an air output valve (3000); S3, stretching the second structural layer (1001) to form an accommodating cavity (1002); S4, thermally bonding the air intake valve (2000), the exhaust valve (4003) and the air output valve (3000) to the first air cushion layer (4000); S5, placing an elastic body (1003) in the accommodating cavity (1002), and thermally bonding the second structural layer (1001) onto the first air cushion layer (4000); S6, thermally bonding the first air cushion layer (4000) and the second air cushion layer (4001) to form an air pouch (4002); and S7, thermally bonding the fabric layer (4005) to the air pouch (4002) to form an air cushion (200).

Description

Air cushion and production process thereof 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' demands for pillows increase, the structures and functions of pillows on the market are becoming more diverse. Some pillows on the market currently have height adjustment functions. Specifically, an airbag is installed in the pillow core, and the height of the pillow core is adjusted by inflating and deflating the airbag. The current airbag is an airbag structure, but the inflation component of existing inflatable pillows is mostly an external inflation pump or inflation valve. This external inflation component is often a hard protruding part that users can easily touch during use, thus affecting the user experience.

[0003] For example, a height-adjustable multi-purpose pillow is disclosed in Chinese patent document CN113827082A. However, the height of the pillow with this structure is lower at the periphery than at the middle. Moreover, 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 and the periphery is lower. Therefore, the support area of ​​the pillow for the human head is small, 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 for 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.

[0005] Summary of the Invention

[0006] The present invention provides an air cushion, comprising a first air cushion layer and a second air cushion layer made of a flexible and heat-fusible material, 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;

[0007] The air valve assembly includes a first structural layer and a second structural layer made of a flexible and heat-fusible material. The first structural layer and the second structural layer are heat-fused to form a receiving cavity. An elastic body is provided in the receiving cavity for holding the receiving cavity open. One or more air outlets are reserved at the heat-fused seam. The air valve assembly also includes an air inlet valve that provides a one-way air inlet channel for the receiving cavity and an air outlet valve provided at the air outlet to provide a one-way air outlet channel.

[0008] The air inlet valve is connected to the outside world, and the air outlet valve is connected to the inside of the airbag;

[0009] The air cushion also includes an exhaust valve for exhausting air, which is arranged on the airbag and communicates with the outside world;

[0010] One or more height-limiting drawstrings are provided inside the airbag, and both ends of the height-limiting drawstrings are connected to the first air cushion layer and the second air cushion layer respectively;

[0011] One or more fabric layers are provided on the outside of the airbag, and the fabric layers are connected to the first air cushion layer and the second air cushion layer by one-time hot-melt connection.

[0012] Furthermore, the second structural layer is directly connected to the first air cushion layer by heat-melting to form a receiving cavity, and the air outlet valve and the air inlet valve are directly heat-melted on the first air cushion layer;

[0013] The airbag forms a shape with a high middle portion and low surrounding portions; both sides of the airbag along the length direction are concave toward the middle portion, forming a shape with wide ends and a narrow middle portion.

[0014] Furthermore, the air cushion also includes an elastic handle; when in use, the handle is used to lift the air cushion, and when stored, the handle is used to bundle the deflated air cushion;

[0015] The air cushion also includes a detachable elastic band, one end of the elastic band is connected to the handle through an open buckle, and the other end of the elastic band is connected to the air cushion through the open buckle.

[0016] Furthermore, an electrical component is provided inside the airbag, which includes a control mechanism and a power supply electrically connected to the control mechanism, wherein the control mechanism includes a switch component and an adjustment component, and the electrical component also includes a heating element and a vibration element, and the adjustment component controls the heating element and the vibration element.

[0017] Furthermore, the exhaust valve comprises a cylindrical third main body and a second valve, wherein the third main body is provided with an exhaust hole arranged along the length direction; a third connecting portion extending radially outward is provided at the bottom of the third main body, and the third connecting portion is connected to the airbag by heat melting;

[0018] The second valve is made of elastic material and has an exhaust valve plate capable of closing the exhaust hole. A protrusion for pressing is provided on the exhaust valve plate. A buckle is provided at the bottom of the third connecting portion, and the exhaust valve plate is connected to the buckle. A fourth connecting portion is provided at the top of the third connecting portion, extending radially outward, and a protective cover is provided on the fourth connecting portion.

[0019] The protective cover includes a collar portion and a cover body portion that are interconnected. The collar portion is a flat ring. The collar portion is sleeved on the third connecting portion and is restricted by the fourth connecting portion. A fastening portion with an annular protrusion is provided at the lower part of the cover body. The fastening portion can cooperate with the third main body portion to close the exhaust valve. A cover-prying portion is also provided on the edge of the cover body.

[0020] The present invention also provides a production process for an air cushion, comprising the following steps:

[0021] S1. Prepare the machines and molds required for production; prepare the air inlet valve and exhaust valve; prepare the blanks of the fabric layer, the first air cushion layer, the second air cushion layer, and the second structural layer;

[0022] S2, manufacturing the outlet valve;

[0023] S3, stretching the second structural layer to form an accommodating cavity;

[0024] S4, hot-melt the air inlet valve, the air exhaust valve and the air outlet valve on the first air cushion layer;

[0025] S5. Placing an elastic body in the accommodating cavity and hot-melting the second structural layer onto the first air cushion layer;

[0026] S6, hot-melt the first air cushion layer and the second air cushion layer to form an air bag;

[0027] S7. Hot-melt the fabric layer and the airbag to form an air cushion.

[0028] Furthermore, the materials for preparing the fabric layer in S1 are 3-5mm porous sponge, four-way stretchable Lycra or leather, and plush fabric with a nylon content of more than 50%; hot melt adhesive is evenly applied 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 applied on the upper surface of the porous sponge, and Lycra or leather is covered on the upper surface of the porous sponge; and the above materials are placed on a laminating machine for lamination and forming.

[0029] Furthermore, the steps of manufacturing the outlet valve in S2 are:

[0030] In a dust-free environment, cut the 0.1mm-0.2mm double-gloss TPU coil into long strips, then remove dust, sterilize, and dry;

[0031] Stack the two TPU strips together so that they fit tightly together and set aside;

[0032] Use a mold to weld two pieces of TPU together through high-frequency equipment;

[0033] Cut the hot-melt TPU strips into individual air outlet valves.

[0034] Furthermore, before S6, one or more height-limiting drawstrings are heat-fused between the first air cushion layer and the second air cushion layer.

[0035] Furthermore, after S7, elastic handles and / or elastic bands are sewn on the sides of the air cushion.

[0036] The air cushion provided by the present invention can be quickly inflated and deflated by simply pressing the inflation valve or air pump. It is easy to operate, safe, and reliable. Its design structure not only meets ergonomic requirements, allowing users to adjust the inflation level according to their preferences to achieve optimal support, but also prevents users from touching hard parts during use, which would affect the user experience.

[0037] The air cushion production process provided by the present invention has simple steps and uses hot-melt technology to 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

[0038] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0039] FIG1 is a schematic diagram of the overall structure of the gas valve assembly in the invention application;

[0040] FIG2 is a schematic diagram of the connection between the elastic body and the accommodating cavity in the invention application;

[0041] FIG3 is a schematic diagram of the connection between the air inlet valve and the air outlet valve in the invention application;

[0042] FIG4 is a schematic diagram of the overall structure of the intake valve in the invention application;

[0043] Figure 5 is a schematic structural diagram of the first valve body in the invention application;

[0044] FIG6 is a schematic structural diagram of the second valve body of the intake valve in the invention application;

[0045] FIG7 is a schematic structural diagram of the first valve in the invention application;

[0046] FIG8 is a schematic structural diagram of the air outlet valve in the invention application;

[0047] FIG9 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;

[0048] FIG10 is a schematic diagram of the overall structure of the air cushion in the invention application;

[0049] FIG11 is a schematic diagram of the connection of the gas valve assembly in the invention application;

[0050] FIG12 is a schematic diagram of the connection structure inside the airbag in the invention application;

[0051] FIG13 is a schematic diagram of the connection structure of the outside of the airbag in the invention application;

[0052] Figure 14 is a schematic diagram of the structure of the handle and elastic band in the invention application;

[0053] FIG15 is a schematic diagram of the structure of the airbag after being tied with the handle in the invention application;

[0054] FIG16 is a schematic diagram of the structure of the electrical components inside the airbag in the invention application;

[0055] FIG17 is a schematic diagram of the structure of the exhaust valve in the invention application;

[0056] FIG18 is a schematic diagram of the structure of the exhaust valve in the invention application;

[0057] FIG19 is a schematic structural diagram of the protective cover in the invention application;

[0058] FIG20 is a schematic structural diagram of the protective cover in the invention application;

[0059] FIG21 is a schematic diagram of step S1 in the invention application;

[0060] FIG22 is a schematic diagram of step S2 in the invention application;

[0061] FIG23 is a schematic diagram of step S2 in the invention application;

[0062] FIG24 is a schematic diagram of step S3 in the invention application;

[0063] FIG25 is a schematic diagram of the hot melt exhaust valve in step S4 of the invention application;

[0064] FIG26 is a schematic diagram of hot-melt air inlet valve in step S4 of the invention application;

[0065] FIG27 is a schematic diagram of the hot melt outlet valve in step S4 of the invention application;

[0066] FIG28 is a schematic diagram of step S5 in the invention application;

[0067] FIG29 is a schematic diagram of a hot-melt height-limiting pull belt in the invention application;

[0068] FIG30 is a schematic diagram of step S6 in the invention application;

[0069] FIG31 is a schematic diagram of step S6 in the invention application;

[0070] FIG32 is a schematic diagram of step S7 in the invention application;

[0071] FIG33 is a schematic diagram of the overall structure of the air cushion in the invention application.

[0072] 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 portion (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); Protruding ring (2303); Air outlet valve (3000); First valve disc (3001); Second valve disc (3002); Second air outlet channel (3003); Air inlet opening (3004) ; air outlet (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

[0073] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0074] References herein to "embodiments" or "implementations" mean that a particular feature, structure, or characteristic described in connection with the embodiments or implementations may be included in at least one embodiment of the present application. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor do they constitute independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0075] In this specification, for convenience, words and phrases indicating orientation or positional relationships, such as "middle," "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inside," and "outside," are used to illustrate the positional relationships of constituent elements with reference to the accompanying drawings. This is merely for the purpose of facilitating the description of this specification and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present disclosure. The positional relationships of constituent elements may be appropriately changed depending on the orientation of the constituent elements being described. Therefore, the present disclosure is not limited to the words and phrases described in the specification and may be appropriately replaced depending on the circumstances.

[0076] As a preferred embodiment of the present invention, the present invention provides a gas valve assembly 100, as shown in Figures 1 and 2, comprising a first structural layer 1000 and a second structural layer 1001 made of a flexible and heat-fusible material, 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 disposed in the receiving cavity 1002 for propping up the receiving cavity 1002; An air outlet 1004 is reserved at the hot melt joint, and the first structural layer 1000 and the second structural layer 1001 are fixed together by a hot melt process to form a accommodating cavity 1002. The manufacturing process is simple, which effectively reduces the production cost. An elastic body 1003 is provided in the accommodating cavity 1002 for supporting the accommodating cavity 1002. This ensures that when the gas pressure is low, the accommodating cavity 1002 will not collapse due to external pressure, thereby affecting the normal operation of the air valve. The air outlet 1004 is reserved at the hot melt joint, which can effectively control the flow of gas, so that the gas can be smoothly discharged from the accommodating cavity when needed, thereby realizing the function of the air valve.

[0077] 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.

[0078] In other embodiments (not shown), the first structural layer 1000 and the second structural layer 1001 can be made of a rubber material, which has excellent elasticity, good physical and mechanical properties, and good chemical stability. In other embodiments (not shown), the first structural layer 1000 and the second structural layer 1001 can also be made of a thermoplastic polyurethane material. Thermoplastic polyurethane has the characteristics of being non-toxic and safe, having a wide range of hardness, and excellent colorability, and is widely used in daily life.

[0079] 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, thereby more accurately controlling the flow of air.

[0080] In this embodiment, as shown in Figure 3, 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 provides a one-way air outlet channel at the air outlet 1004. 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.

[0081] 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.

[0082] In this embodiment, as shown in Figures 4 and 5, the intake valve 2000 includes 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 opened on the first main body 2101; a lateral intake channel 2105 is also provided on the upper portion of the first main body 2101; A retaining ring 2106 is provided at the lower part for fixing 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 air inlet hole 2104 and the lateral air inlet channel 2105 allows gas to enter from multiple directions, thereby improving the flexibility of gas flow; the design of the retaining ring 2106 enables the second valve body 2002 to be conveniently fixed on the first valve body 2001, thereby improving the stability of the assembly.

[0083] In this embodiment, as shown in Figure 6, the second valve body 2002 has a cylindrical second main body portion 2201, and 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 provided on the concave cavity 2202; the upward opening of the concave cavity 2202 and the arrangement of the first air outlet channel 2204 allow gas to flow out from multiple directions, thereby improving the flexibility of gas flow, and the upward opening design of the concave cavity 2202 can prevent gas from flowing in the opposite direction, thereby avoiding possible safety risks.

[0084] In this embodiment, as shown in FIG7 , the air intake valve 2000 further includes a first valve 2003, which is made of a flexible material and 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 mounting hole 2103; the lower portion of the first valve body 2001 is installed in the concave cavity 2202, and the first main body 2101 and the second main body are connected. 2201 fits well, and the first valve 2003 is made of flexible material, which enables the intake valve 2000 to maintain good sealing performance and reduce gas leakage when responding to 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 air inlet 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.

[0085] 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.

[0086] 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 a wider variety of applications.

[0087] 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, reducing valve damage caused by uneven force. 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.

[0088] In other embodiments (not shown), the air inlet holes 2104 may be provided in five or any other desired number to provide a larger air inlet area, thereby improving air inlet efficiency. In other embodiments (not shown), the lateral air inlet channels 2105 may be provided in five or any other desired number and evenly distributed around the first body portion 2101 to provide more uniform airflow.

[0089] In this embodiment, there are four first air outlet channels 2204, three of which are provided on the side walls of the concave cavity 2202, and one is provided at the bottom of the concave cavity 2202. A radially inwardly extending flange 2205 is provided at the top of the concave cavity 2202. The flange 2205 is used to resist the retaining ring 2106 and prevent the second valve body 2002 from separating from the first valve body 2001. The first valve 2003 is mushroom-shaped, and a protruding ring 2303 is provided on the first valve stem 2302. The protruding 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 allows gas to be discharged from multiple directions, thereby improving the air outlet efficiency. The provision of the flange 2205 improves the stability of the air inlet valve 2000 and prevents it from detaching during use. The protruding ring 2303 is used to prevent the first valve 2003 from slipping out of the valve mounting hole 2103. This design can effectively prevent the valve from slipping and improve the safety of the valve.

[0090] In other embodiments (not shown), the number of the first air outlet channels 2204 may be six or any other desired number, thereby improving the exhaust efficiency from the first air outlet channels 2204 .

[0091] 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 , so as to further prevent the first valve 2003 from slipping out of the valve mounting hole 2103 .

[0092] In this embodiment, as shown in FIG8 , the outlet valve 3000 is formed by hot-melting a first valve disc 3001 and a second valve disc 3002 made of a flexible and heat-fusible material. The first valve disc 3001 and the second valve disc 3002 are connected at opposite sides to form a second outlet channel 3003 that is wide on both sides and narrow in the middle. One end of the second outlet channel 3003 connected to the 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 disc 3001 and the second valve disc 3002 are connected. 2 When the air valve assembly 100 is not inflated, the first valve plate 3001 and the second valve plate 3002 fit together. The design of the second air outlet channel 3003 allows 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 heat-meltable material. Such a material has good wear resistance and high temperature resistance, which 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 fit together, which can effectively prevent gas leakage and improve the sealing of the valve.

[0093] 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.

[0094] In other embodiments (not shown), the first valve disc 3001 and the second valve disc 3002 can be made of silicone. Silicone has excellent heat and cold resistance and can maintain its physical properties in various temperature environments. In addition, silicone has good aging resistance and will not harden or crack even after long-term use. Therefore, valve discs made of silicone can provide excellent sealing performance and long-term durability.

[0095] In other embodiments (not shown), the first valve disc 3001 and the second valve disc 3002 can also be made of rubber, a commonly used valve disc material with excellent elasticity and flexibility. Rubber valve discs can quickly return to their original shape when pressure changes, thereby providing excellent sealing performance. Furthermore, rubber valve discs are also highly wear-resistant and corrosion-resistant, maintaining their performance in various harsh environments.

[0096] In this embodiment, as shown in Figure 9, 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 the 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.

[0097] In this embodiment, the elastomer 1003 is a sponge, which is arranged in the accommodating cavity 1002. When inflation is required, the sponge is pressed. After pressing, the sponge rebounds and reopens the accommodating cavity 1002. Inflation can be achieved by pressing the sponge. The operation is simple and convenient. The sponge is a durable material that can withstand repeated pressing and rebound and has a long service life.

[0098] In other embodiments (not shown), the elastic body 1003 may be made of polyurethane foam, which is a lightweight, highly elastic material with good wear resistance and aging resistance. Polyurethane foam elastomers can quickly return to their original shape after being compressed, making them an ideal material for making elastomers.

[0099] As a preferred embodiment of the present application, the present application also provides an air cushion 200, including an air valve assembly 100, as shown in Figures 1-2, the air valve assembly 100 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 hot-melted to form a accommodating cavity 1002, and an elastomer 1003 is provided in the accommodating cavity 1002 for supporting the accommodating cavity 1002; more than one air outlet 1004 is reserved at the hot-melt joint; the air valve assembly 100 also includes an air inlet valve 2000 that provides a one-way air inlet channel for the accommodating cavity 1002 and an air outlet valve 3000 that provides a one-way air outlet channel and is provided at the air outlet 1004.

[0100] In this embodiment, as shown in Figure 10, the air cushion 200 includes a first air cushion layer 4000 and a second air cushion layer 4001 made of flexible and heat-meltable materials. The first air cushion layer 4000 and the second air cushion layer 4001 are heat-melted to form an air bag 4002; the air valve assembly 100 is arranged on the air bag 4002, and the air bag 4002 can provide a good cushioning effect, which increases 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.

[0101] In this embodiment, as shown in Figure 11, the air inlet valve 2000 of the air valve assembly 100 is connected to the outside world, 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 exhaust, and the exhaust valve 4003 is provided on the airbag 4002, and the exhaust valve 4003 is connected to the outside world; the air inlet valve 2000 is connected to the outside world, making 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 inflated, and the exhaust valve 4003 is provided on the airbag 4002 and connected to the outside world, 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 for carrying outside.

[0102] In this embodiment, as shown in Figure 12, two height limiting pull straps 4004 are provided inside the airbag 4002, and the two ends of the height limiting pull straps 4004 are respectively connected to the first air cushion layer 4000 and the second air cushion layer 4001; by providing the height limiting pull straps 4004, the height of the airbag 4002 can be effectively controlled. When the airbag 4002 is inflated, the height limiting pull 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 pull 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.

[0103] In this embodiment, as shown in Figure 13, a three-layer fabric layer 4005 is provided on the outside of 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. As shown in Figures 14-15, 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 seam between the handle 4006 and the air cushion 200, which is connected by hot melt. This can improve 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 users to carry it out. When in use, the handle 4006 is used to lift the air cushion 200. When storing, the handle 4006 is used to bundle the deflated air cushion 200.

[0104] 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 through an open buckle 4009, and the other end of the elastic band 4008 is connected to the air cushion 200 through the open buckle 4009. The elastic band 4008 can help the air cushion 200 to be more stably fixed in an appropriate position 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.

[0105] In other embodiments (not shown in the figures), four layers of fabric 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.

[0106] In other embodiments (not shown in the figures), the fabric layer 4005 can be made of cotton. 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.

[0107] 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.

[0108] 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.

[0109] In this embodiment, as shown in Figure 16, the airbag 4002 is formed in a shape with a high middle and low surroundings; the airbag 4002 is concave toward the middle on both sides along the length direction, forming a shape with wide ends and a narrow 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 providing the electrical component 5000, the air cushion 200 can have more functions to meet the different needs of users. By providing 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.

[0110] In this embodiment, as shown in Figures 17 and 18, the exhaust valve 4003 has a cylindrical third main body portion 4101 and a second valve 4102, and an exhaust hole 4103 is provided on the third main body portion 4101 along the length direction; a third connecting portion 4104 extending radially outward is provided at the bottom of the third main body portion 4101, and the third connecting portion 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.

[0111] In this embodiment, the second valve 4102 is made of an elastic material and has an exhaust valve plate 4105 that can close the exhaust hole 4103. 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. The provision of the buckle 4107 makes the connection between the exhaust valve plate 4105 and the third connecting portion 4104 more secure, and the exhaust valve 4003 has a more stable and secure structure, effectively preventing the exhaust valve 4003 from accidentally opening during use. By providing the protective cover 4109, the sealing performance 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 the influence of the external environment, thereby increasing the service life of the product.

[0112] In other embodiments (not shown), second valve 4102 is made of metal to improve the durability and stability of exhaust valve 4003. In other embodiments (not shown), a pressure sensor is added to second valve 4102 to monitor the pressure within the airbag in real time. When the pressure within the airbag exceeds a set value, the pressure sensor can automatically open second valve 4102 to prevent airbag 4002 from rupturing.

[0113] In this embodiment, as shown in Figures 19 and 20, the protective cover 4109 includes a ring portion 4110 and a cover body portion 4111 that are connected to each other. The ring portion 4110 is a flat ring. The ring 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.

[0114] 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 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.

[0115] 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, prepare the machines and molds required for production; prepare the air inlet valve 2000 and the 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, manufacture the air outlet valve 3000; S3, stretch the second structural layer 1001 to form a accommodating cavity 1002; S4, hot-melt the air inlet valve 2000, the exhaust valve 4003 and the air outlet valve 3000 on the first air cushion layer 4000; S5, place the elastomer 1003 in the accommodating cavity 1002, and hot-melt the second structural layer 1001 onto the first air cushion layer 4000; S6, hot-melt the first air cushion layer 4000 and the second air cushion layer 4001 to form the airbag 4002; S7, hot-melt the fabric layer 4005 and the airbag 4002 to form an air cushion.

[0116] Specifically, in step S1, referring to FIG21 , the specific operations are:

[0117] A1: Prepare the materials for fabric layer 4005. These materials typically consist of a 3-5mm thick porous sponge (S100-3), four-way stretch Lycra or leather (S100-4), and plush fabric (S100-1) with a nylon content of 50% or more. Evenly apply hot-melt adhesive (S100-2) to the inner surface of the plush fabric (50% or more nylon content). Place the bottom surface of the porous sponge over the hot-melt adhesive-coated inner surface of the plush fabric (50% or more nylon content). Finally, evenly apply hot-melt adhesive to the top surface of the porous sponge. Place the bottom surface of the Lycra or leather over the hot-melt adhesive-coated top surface of the porous sponge. This completes the finished material.

[0118] A2: Place the processed material in A1 on a laminating machine for lamination and then place it for more than 20 hours to cool naturally. S100 can then be obtained. S100 is the fabric layer 4005.

[0119] Furthermore, in step S2, referring to FIG. 22 and FIG. 23 , the gas valve 3000 is manufactured in a dust-free environment. The specific operations are:

[0120] A3: Cut the 0.1mm or 0.2mm double-gloss TPU coil into 1370mm*50mm strips S200, then wipe the TPU strips with a cashmere cloth dampened with alcohol to remove dust, then spray with bactericidal and antibacterial liquid and let dry;

[0121] A4: Take the two TPU strips processed in A3, align the edges and stack them together. Use a rolling rod to remove any bubbles so that the two TPU strips fit tightly together. Set aside for later use.

[0122] 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 to between 2-4 seconds, and the high-frequency current to between 2-3A. Place the TPU strip processed in A4 on the fixed metal platform, operate the high-frequency equipment correctly, and weld the two pieces of TPU together. Repeat the operation until the entire TPU strip is welded together to obtain S300.

[0123] A6: Place the processed TPU strips in A5 on the sliding platform of the cutting table. Place the customized cutter die D2 on the strips, with the blade facing the material to be cut. Set the cutting depth to between 0.2-0.25mm and the rise height to between 1.5-2 seconds. Operate the cutting table correctly to cut the hot-melt TPU strips S300 into individual outlet valves 3000 and collect them for later use.

[0124] A7: Take a roll of 40mm wide and 0.2mm thick PE rigid plastic coil, fix it on a computerized tape cutter, set the cutting length to 7-15mm, keep the cutting head at room temperature, operate the equipment correctly, and automatically cut until the entire roll of material is cut, obtaining S500;

[0125] A8: Take an outlet valve 3000 processed by A6 and a 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.

[0126] Furthermore, in step S3, referring to FIG. 24 , the second structural layer 1001 is stretched to form the accommodating cavity 1002 . The specific operations are:

[0127] A9: Fix the upper mold M200-S and lower mold M200-X of the forming mold to the upper and lower platforms of a hydraulic press with heating function respectively. Set the heating temperature between 100-120°C, the setting time between 50-300 seconds, the pressure to 20 tons, and the working mode to manual mode. Operate the hydraulic press to close the mold and start heating the mold. The specific temperature depends on the material.

[0128] A13: After the mold temperature reaches the set temperature, operate the hydraulic press to separate the shaping mold, place the cut room temperature material S700 in the corresponding groove of the lower mold M200-X of the shaping mold, operate the hydraulic press correctly, and close the shaping mold. 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;

[0129] A14: After the setting time reaches the set value, the hydraulic press automatically separates the upper mold M200-S and the lower mold M200-X of the forming mold. During the mold separation process, the steel plate M200-Z of the automatic demoulding 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 the formed second structural layer 1001 is taken out and obtained. The second structural layer 1001 includes one or more accommodating cavities 1002.

[0130] Furthermore, in step S4, the exhaust valve 4003, the air inlet valve 2000 and the air outlet valve 3000 are heat-melted on the first air cushion layer 4000 respectively.

[0131] Referring to FIG. 25 , the hot melt exhaust valve 4003 , the specific operation is:

[0132] A15: Fix the welding exhaust valve fixture G1-S on the movable head of the high-frequency equipment and G1-X on the fixed metal platform, and adjust the gap between the fixtures G1-S and G1-X to between 0.5-0.8mm;

[0133] A16: Place the exhaust valve on the hole of tooling G1-X, then fit the corresponding hole of the cut first air cushion layer 4000 onto the exhaust valve 4003. Set the welding time to between 2-4 seconds and the high-frequency current to between 2-3A. Operate the high-frequency equipment correctly to firmly weld the exhaust valve 4003 to the first air cushion layer 4000 to obtain S1000.

[0134] Referring to FIG. 26 , the hot melt air inlet valve 2000 is operated as follows:

[0135] A17: Fix the tool G2-S for welding the air inlet valve 2000 on the movable head of the high-frequency equipment and fix G2-X on the fixed metal platform. Adjust the gap between the tool G2-S and G2-X to between 0.5-0.8mm.

[0136] A18: Place the intake valve 2000 on the hole of tooling G2-X, then fit the corresponding hole of the cut first air cushion layer 4000 onto the intake valve 2000. Set the welding time to between 2-4 seconds and the high-frequency current to between 2-3A. Operate the high-frequency equipment correctly to firmly weld the intake valve 2000 and the first air cushion layer 4000, obtaining S1100.

[0137] Referring to FIG. 27 , the hot melt outlet valve 3000 , the specific operation is:

[0138] A19: Fix the tooling G3 of the welding outlet valve 3000 to 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;

[0139] A20: Place S1100 at the designated position on the fixed metal platform of the high-frequency equipment, then place the outlet valve 3000 manufactured in step S2 at the designated position on the upper surface of S1100, operate the high-frequency equipment correctly, and firmly weld the outlet valve 3000 to S1100 to obtain S1200.

[0140] Furthermore, in step S5, as shown in FIG. 28 , an elastic body 1003 is placed in the accommodating cavity 1002 , and the second structural layer 1001 is heat-fused onto the first air cushion layer 4000 . The specific operations are:

[0141] 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;

[0142] A22: Place S1200 obtained in step S4 at a designated position on the fixed metal platform of the high-frequency equipment, with the side where the gas outlet valve 3000 is welded facing upwards;

[0143] A23: Place the elastic body 1003 inside the accommodating cavity 1002 and cover the position specified in S1200;

[0144] 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, remove 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.

[0145] Furthermore, before executing step S6, referring to FIG. 29 , it is necessary to heat-melt one or more height-limiting pull tapes 4004 between the first air cushion layer 4000 and the second air cushion layer 4001. The specific operation is as follows:

[0146] A25: Take two pieces of height-limiting drawstrings 4004 made of the same material as the air cushion 200, and weld their ends to 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. Its functions are twofold: one is to limit the height of the airbag after inflation, and the other is to make the shape of the airbag more beautiful.

[0147] Furthermore, in step S6, referring to FIG. 30 and FIG. 31 , the first air cushion layer 4000 and the second air cushion layer 4001 are heat-fused to form the air bag 4002. The specific operation is:

[0148] 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;

[0149] A27: Place the S1700 obtained in A25 on the mold M400-X, with the second air cushion layer 4001 facing downwards, 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.

[0150] A28: Operate the high-frequency equipment correctly 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.

[0151] In this step, the equipment has upper and lower machine tables with cooling function, and the cooling function is realized by aluminum plates with cooling water channels. The aluminum plates have water inlets and outlets connected to the water cooler as well as fixing holes. The chiller controls the temperature of the aluminum plates by controlling the temperature of the circulating water, thereby achieving the purpose of cooling the mold.

[0152] In some embodiments (not shown), the aluminum plate with cooling water channels is directly provided on the mold M400-S or the mold M400-X. In another embodiment (not shown), the aluminum plate with cooling water channels can also be a separate component that is attached to the mold M400-S or the mold M400-X.

[0153] Furthermore, in step S7, as shown in FIG32 , the fabric layer 4005 and the airbag 4002 are heat-fused to form the air cushion 200. The specific operations are:

[0154] 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, and the cutting time to 2 seconds. Operate the cutting table correctly to obtain the cut surface material S1900.

[0155] A30: Fix the mold M500 to the sliding metal platform of the high-frequency equipment 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;

[0156] A31: Place a piece of S1900 into the mold M500, with the fabric side facing down, and align the holes with the nails of the M500 one by one. Then place the S1800 on the S1900, and align the holes with the nails of the M500 one by one. Finally, take another piece of S1900 and place it on the S1800, and align the holes with the nails of the M500 one by one.

[0157] A32: Operate the high-frequency equipment correctly to obtain the semi-finished product S2000 of the air cushion.

[0158] In this embodiment, during the A31 process, the surface material S1900 on one side of the exhaust valve 4003 can also have a plush surface as the outer surface, and the plush surface can 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.

[0159] In this embodiment, this production process is called edgeless fusion cutting technology. The mold M500 is made of heat-treated and precision-carved titanium alloy imported from Japan. When exposed to a high-frequency electromagnetic field, the molecules of the material, which contains at least 50% nylon, polarize and align according to the field's direction. The high-frequency electromagnetic field causes the molecules to change direction at an extremely fast rate, causing the material to heat up due to dielectric loss, leading to fusion. Pressure and the mold create a fusion-cutting effect. This product eliminates the need for traditional sewing and hemming, resulting in a simpler, softer, and more comfortable appearance.

[0160] Furthermore, after completing step S7, referring to FIG. 33 , after obtaining the semi-finished air cushion 200, 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.

[0161] 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 fastening the "9" hook structure. This structure can be used to store the airbag and can be used as a handle to fix the airbag to the seat.

[0162] 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 either 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 it can be 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.

[0163] 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 either 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 modes include physical button operation and mobile phone APP operation. The physical buttons are sewn on the fabric layer 4005.

[0164] 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 softness and hardness of the air cushion 200. The air cushion 200 applied for by the present invention is easy to operate, safe and reliable. At the same time, its design structure not only meets ergonomics, but also users can adjust the degree of inflation according to their preferences when using it to achieve the best support effect and improve the user's experience.

[0165] The technical means disclosed in the solutions of the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection 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 a flexible and heat-fusible material, 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 provided in the receiving cavity (1002) for supporting the receiving cavity (1002); one or more air outlets (1004) are reserved at the heat-fused seam; the air valve assembly (100) further comprises an air inlet valve (2000) for 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 airbag (4002); The air cushion (200) further comprises an exhaust valve (4003) for exhausting air, wherein the exhaust valve (4003) is provided on the air bag (4002), and the exhaust valve (4003) is in communication with the outside world; 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 periphery; the airbag (4002) is concave toward the middle portion on 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 bundle the air cushion (200) after it has been deflated; 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 provided 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). Among them, the control mechanism (5001) includes a switch assembly (5003) and an adjustment assembly (5004). The electrical component (5000) further includes a heating element (5005) and a vibration element (5006). The adjustment assembly (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) has a cylindrical third main body portion (4101) and a second valve (4102). An exhaust hole (4103) is provided on the third main body portion (4101) along the length direction; a third connecting portion (4104) extending radially outward is provided at the bottom of the third main body portion (4101), and the third connecting portion (4104) is heat-melted to the airbag (4002); The second valve (4102) is made of an elastic material and has an exhaust valve plate (4105) that can close the exhaust hole (4103). A protruding portion (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); The protective cover (4109) includes a collar portion (4110) and a cover body portion (4111) connected to each other. The collar portion (4110) is a flat ring shape. 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 a ring-shaped protrusion is provided at the lower part of the cover body portion (4111). The fastening portion (4112) can cooperate with the third main body portion (4101) to close the exhaust valve (4003). A dial cover portion (4113) is further provided at the edge of the cover body portion (4111).

6. A production process of an air cushion, characterized in that, It includes the following steps: S1. Prepare the machines and molds required for production; prepare the intake valve (2000) and the exhaust valve (4003); prepare the blanks of the fabric layer (4005), the first air cushion layer (4000), the second air cushion layer (4001), the second structural layer (1001), etc.; S2. Manufacture the air outlet valve (3000); S3. Stretch the second structural layer (1001) to form an accommodation cavity (1002); S4. Heat-melt the intake valve (2000), the exhaust valve (4003), and the air outlet valve (3000) on the first air cushion layer (4000); S5. Place the elastomer (1003) in the accommodation cavity (1002), and heat-melt the second structural layer (1001) to the first air cushion layer (4000); S6. Heat-seal the first air cushion layer (4000) and the second air cushion layer (4001) to form an airbag (4002). S7. Heat-seal 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%. Evenly coat hot melt adhesive on one side of the inner surface of the plush fabric, cover the lower surface of the porous sponge on one side of the inner surface of the plush fabric where the hot melt adhesive has been applied, then coat hot melt adhesive on the upper surface of the porous sponge, and cover the Lycra or leather on the upper surface of the porous sponge. Then place the above materials on a laminating machine for lamination and shaping.

8. The production process of the air cushion according to claim 6, characterized in that: The steps for manufacturing the air valve (3000) in S2 are as follows: In a dust-free environment, cut a 0.1 mm - 0.2 mm double-sided shiny TPU coil into strips, then remove dust, sterilize, and dry. Stack two TPU strips together to make the two TPU strips fit tightly, and set aside. Use a mold and high-frequency equipment to weld the two TPU pieces together. Cut the heat-sealed TPU strip into individual air valves (3000).

9. The production process of the air cushion according to claim 6, characterized in that: Before S6, heat-seal more than one height-limiting strap (4004) 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, sew an elastic handle (4006) and / or an elastic band (4008) on the side of the air cushion (200).

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