Water-gas multifunctional mattress

Abstract

The invention discloses a multifunctional water-gas mattress, and belongs to the technical field of sleeping articles. The bag cavities at least comprise a first bag cavity and a second bag cavity; the second bag cavity is wrapped by the first bag cavity; the first bag cavity and the second bag cavity are filled with first fluid and second fluid respectively so that the second bag cavity can float in the first bag cavity. The first bag cavity and the second bag cavity are respectively provided with a fluid injection port; the first bag cavity and the second bag cavity are both made of airtight foldable non-rigid materials. Wherein the second bag cavity is of a structure with a multidirectional free bending function and can be freely bent under any air pressure, sufficient wrapping is provided for the human body, and meanwhile the stress area is increased, so that the stress on the body is reduced, and the sleep quality is improved. The volume of fluid in different bag cavities is adjusted by adjusting the fluid in and out of the fluid injection port, and the temperature of the mattress is adjusted through the temperature of the fluid. The technical effect of improving use convenience and comfort is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sleeping products, in particular to a mattress, especially a water-air multifunctional mattress. Background Art

[0002] Mattress is an item between the human body and the bed used to ensure consumers get a healthy and comfortable sleep. Mattresses are made of a variety of materials, and mattresses made of different materials can bring different sleeping effects. With the development of technology, there are more and more styles of mattresses, and even mattresses filled with non-solid materials have appeared on the market.

[0003] The prior art (CN104490165A) discloses a water-filled mattress, comprising a water mattress, characterized in that: the water-filled mattress body (1) is an integral structure formed by sealing and connecting two layers of non-woven fabric, and the water-filled mattress body (1) is provided with a water valve (2) for filling water on its side. When filling water, water can be filled into the water mattress (1) from the water valve (2) by a water pump, a tap or manual water filling. After the water body is full, the water valve of the water filling valve 2 is closed. When draining water, as long as the water valve (2) is opened, the water in the water mattress body (1) is quickly discharged from the water valve (2). The entire water filling and draining process is very convenient and fast. After draining water, the water mattress body (1) can be folded up. Due to its small size and light weight, it is very convenient to carry around. The water-filled mattress has a simple structure, is easy to manufacture, and is quick to fill and drain water. Because the specific heat of water is greater than any other existing mattress material, people will feel cool and comfortable when resting on a water-filled mattress in the hot summer, which will make people enjoy the hot weather and save a lot of air conditioning costs, which is also a contribution to saving electricity and reducing emissions.

[0004] In addition, the prior art (CN107224139A) also discloses an inflatable mattress, which has an upper structure, an inflatable middle layer and a bottom structure. The upper structure includes a basic fabric layer and a covering layer. The basic fabric layer is woven from a plurality of fabric fibers, and the number of warp and weft fibers per square inch is greater than 100. The covering layer and the basic fabric layer are bonded by viscose, and the weight of the viscose per square yard is greater than 20 grams and less than 80 grams. The basic fabric layer is pressed and embedded in the covering layer toward the covering layer to form a fabric surface bonding material. The first surface of the inflatable middle layer is fixedly connected to the upper structure, and the inflatable middle layer includes at least one air cavity for expanding into a predetermined shape when inflated, and the outer side of the inflatable middle layer includes the fabric surface bonding material. The second surface of the inflatable middle layer is fixedly connected to the bottom structure.

[0005] However, in the process of implementing the technical solution in the prior art, the applicant discovered that the technical solution in the prior art had the following technical problems:

[0006] In the prior art, mattresses are large in size and difficult to carry. For example, the mattresses in the above two prior arts cannot be folded and are mostly used in indoor environments. As people are more and more fond of outdoor activities, it is very inconvenient to move traditional indoor mattresses to outdoor use. In addition, the height of the inflatable and deflated mattress can only be adjusted by the air capacity. When the air capacity is too much, the mattress is relatively stiff, affecting the comfort; when the air capacity is too little, the mattress is concave, which also affects the comfort. The complex structure of the automatic inflatable mattress increases the cost and is not convenient to carry for use as an outdoor mattress. In addition, a pure inflatable mattress cannot or is not easy to adjust the user's body temperature. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a water-air multifunctional mattress, which solves the technical problems of inconvenience in use and low comfort in the prior art, and at least achieves one of the technical effects of improving convenience and comfort in use.

[0008] In order to solve the above technical problems, the technical solution of the present invention is:

[0009] A water-air multifunctional mattress is composed of a plurality of cavities, wherein the cavities include at least a first cavity and a second cavity; the second cavity is wrapped by the first cavity; the first cavity and the second cavity are respectively filled with a first fluid and a second fluid so that the second cavity floats in the first cavity; the first cavity and the second cavity are respectively provided with a fluid injection port; wherein the materials of the first cavity and the second cavity are both airtight, foldable and non-rigid materials; the fluid volume in different cavities is adjusted by adjusting the fluid in and out of the fluid injection port, and the mattress temperature is adjusted by the fluid temperature, so as to adjust the body temperature.

[0010] Preferably, an opening is provided at one end of the second cavity away from the first cavity, and the opening is used to add or drain fluid. (When used outdoors, the interior of the second cavity can be turned outward along the opening, which is convenient for cleaning and drying the moisture in the mattress and accelerating the drainage of fluid, avoiding problems such as mold and fungus caused by storage after use.

[0011] More preferably, it also includes a third cavity; the third cavity is connected to the first cavity; the third cavity is used to support a first human body part, and the first cavity or the second cavity or the first cavity and the second cavity are used together to support a second human body part; the first cavity is filled with a first fluid, and the second cavity and the third cavity are filled with a second fluid; a non-rigid material storage container is movably arranged between the first cavity and the third cavity, and the first cavity, the second cavity and the third cavity can be placed in the storage container.

[0012] Particularly preferably, one end of the first cavity is provided with an opening of a multi-folding structure, a portion of the opening farthest from the first cavity is provided with a fitting opening or a zipper opening, and a fluid injection port is provided on the multi-folding structure of the opening; the fold of the opening is higher than the highest point of the first cavity, so that the opening of the opening is higher than the highest point of the first cavity after folding.

[0013] Preferably, the density of the first fluid is greater than the density of the second fluid; the fluid injection port is adapted to the fluid inlet and outlet nozzle of the external fluid container; and the second capsule cavity is wrapped by the first capsule cavity to form a dual-density structure.

[0014] More preferably, the first capsule cavity and the second capsule cavity are an air cushion and a water bag respectively; wherein, when the water bag is filled with water and the air cushion is filled with air, the water generates buoyancy on the air cushion, and after being inflated, the second capsule cavity can float inside the first capsule cavity filled with water, and except for necessary fixed points, other parts are in an unfixed free floating state, and water can also penetrate into the upper surface of the air cushion.

[0015] Particularly preferably, it also includes a third cavity connected to the first cavity, wherein the first cavity, the second cavity and the third cavity are respectively a large air cushion, a water bag and a small air cushion; the large air cushion and the small air cushion are composed of a plurality of air cavity units to form a multi-directional free bending structure; the second fluid and the third fluid are air, and the first fluid is water; the first cavity and the second cavity form a water-air combination structure; the first human body part and the second human body part are respectively the legs and the human body part above the legs; the small air cushion supports the legs, and the first cavity and the second cavity jointly support the human body part above the legs. The existence of the third cavity can reduce the amount of water, so as to achieve the purpose of saving water and the purpose of convenience in use.

[0016] Preferably, the fluid injection port passes through the surface of the water bag and extends into the large air cushion.

[0017] More preferably, the first cavity and the third cavity are respectively injected with air, and when the second cavity is not injected with any substance or is injected with air, the water-air multifunctional mattress is a pure air cushion mattress.

[0018] Particularly preferably, the external fluid container is at least one of an air-filled bag, a water-filled bag, a power fluid circulation device or a power fluid temperature-controlled circulation device.

[0019] One or more technical solutions provided by this application have at least the following technical effects or advantages:

[0020] The above technical solution is composed of multiple capsule cavities, the capsule cavities at least include the first capsule cavity and the second capsule cavity; the second capsule cavity is wrapped by the first capsule cavity; the first capsule cavity and the second capsule cavity are respectively filled with the first fluid and the second fluid so that the second capsule cavity floats in the first capsule cavity; the first capsule cavity and the second capsule cavity are respectively provided with fluid injection ports; wherein the materials of the first capsule cavity and the second capsule cavity are both airtight, foldable, non-rigid materials, and a series of technical means, so that a multi-density composite capsule cavity structure is formed by combining capsule cavities with capsule cavities composed of airtight, foldable, non-rigid materials and different capsule cavities are injected with fluids of different densities, wherein the second capsule cavity is a multi-directional free bending functional structure, which can be freely bent even in a very saturated state of air pressure, providing sufficient wrapping for the human body. The airtight, foldable, non-rigid material can also ensure that the capsule cavity can be folded up after the injected fluid is discharged. It effectively solves the technical problems of inconvenience in use and low comfort in the prior art, thereby achieving the technical effect of improving convenience and comfort in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the present invention when it is in a load-bearing state;

[0023] Figure 3 This is a schematic structural diagram of the present invention when two air cushions are combined with a water bag;

[0024] Figure 4 It is a structural schematic diagram of the large air cushion of the present invention;

[0025] Figure 5 is a side view of an air cushion of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the water bag of the present invention;

[0027] Figure 7 It is a schematic diagram of the universal folding of the large air cushion of the present invention.

[0028] Figure 8 It is a schematic diagram of the structure of the water seepage hole of the large air cushion of the present invention;

[0029] Fig. 9 It is a schematic diagram of the water bag opening of the present invention when it is in an unfolded state;

[0030] Fig.10 It is a schematic diagram of the water bag opening of the present invention when it is in a first folding state;

[0031] Fig.11 It is a schematic diagram of the water bag opening of the present invention being in a second folding state;

[0032] Fig.12 It is a schematic diagram of the water bag and the air cushion of the present invention when they are in an unfolded state.

[0033] In the figure, 100, the first cavity; 101, the water bag; 110, the opening; 111, the zipper; 200, the second cavity; 201, the large air cushion; 210, the air cavity unit; 220, the water seepage hole; 300, the third cavity; 301, the small air cushion; 400, the fluid injection port. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] In the prior art, when using a water bed, the buoyancy of water on the human body is limited because the density of the human body is greater than that of water, and very deep water is required to ensure that the body does not stick to solid objects below the water. This results in a large amount of water used and inconvenience in use. In addition, in terms of comfort, due to the excessively soft nature of water, there is insufficient support for the human body, resulting in uncomfortable sleep.

[0036] In the prior art, when a pure air bed is used, the bed body is too hard when fully inflated, and cannot wrap and decompress the human body. In order to improve the problem of too hard texture, when some air is released, the bed body cannot be shaped due to lack of air, and cannot be hard and soft, or soft and hard. In addition, in terms of temperature comfort, the air bed has warmth retention, which is suitable in winter, but it cannot cool the human body in summer, and thus cannot bring comfort.

[0037] The technical solution of the implementation mode of the present application solves the problems of inconvenience in use and low comfort in the prior art by providing a water-vapor multifunctional mattress. It achieves the beneficial effects of closer support and more comfortable supporting experience by forming a multi-density composite capsule structure composed of airtight, foldable, non-rigid material capsule cavities and injecting fluids of different densities into different capsule cavities, combined with capsule cavities wrapping capsule cavities.

[0038] The non-rigid material bladder cavity can be folded up after the fluid inside is emptied, so it is easy to carry and use.

[0039] The overall idea of ​​the implementation scheme of the present invention to solve the above technical problems is as follows:

[0040] A water-air multifunctional mattress is composed of a plurality of cavities, wherein the cavities include at least a first cavity 100 and a second cavity 200; the second cavity 200 is wrapped by the first cavity 100; the first cavity 100 and the second cavity 200 are respectively filled with a first fluid and a second fluid so that the second cavity 200 floats in the first cavity 100; the first cavity 100 and the second cavity 200 are respectively provided with a fluid injection port 400; wherein the materials of the first cavity 100 and the second cavity 200 are both airtight, foldable and non-rigid materials; the fluid volume in different cavities is adjusted by adjusting the fluid in and out of the fluid injection port 400, and the temperature of the mattress is adjusted by the fluid temperature.

[0041] Specifically, the first fluid is water and the second fluid is air, thereby forming a water-air combination structure.

[0042] More specifically, the support force generated when the second capsule cavity 200 is filled with air and floats in the first capsule cavity 100 filled with water is used to provide support for the human body.

[0043] More specifically, by taking advantage of the fact that the water depth is greater than the gas height, the second capsule cavity 200 occupies part of the space of the first capsule cavity 100, thereby reducing water consumption.

[0044] Particularly specifically, the structure of the second capsule cavity 200 with its multi-directional free bending characteristics is utilized to provide sufficient wrapping for the human body.

[0045] When water is not needed and no substance or even air is injected into the second bag cavity 200, the water-air multifunctional mattress is a pure air mattress.

[0046] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] A water-air multifunctional mattress, such as Figure 1 As shown, it is composed of two capsule cavities, which are the first capsule cavity 100 and the second capsule cavity 200; the second capsule cavity 200 is wrapped by the first capsule cavity 100; the first capsule cavity 100 and the second capsule cavity 200 are respectively filled with water and air; the first capsule cavity 100 and the second capsule cavity 200 are respectively provided with a fluid injection port 400 (water or air injection port); wherein, the material of the first capsule cavity 100 and the second capsule cavity 200 are both airtight, foldable and non-rigid materials, such as anti-penetration soft materials; the water volume or air volume in different capsule cavities is adjusted by adjusting the water or air in and out of the fluid injection port 400 (adjustable water nozzle or adjustable air nozzle).

[0048] To further save water, Figure 3As shown, a water-air multifunctional mattress is composed of three cavities, which are a first cavity 100, a second cavity 200 and a third cavity 300; the second cavity 200 is wrapped by the first cavity 100; the first cavity 100 is connected to the third cavity 300; the first cavity 100, the second cavity 200 and the third cavity 300 are respectively filled with water, air and air; the first cavity 100, the second cavity 200 and the third cavity 300 are respectively provided with a fluid injection port 400 (water or its injection port); wherein the materials of the first cavity 100, the second cavity 200 and the third cavity 300 are all airtight, foldable and non-rigid materials, such as anti-penetration soft materials; the third cavity 300 is used to support the calf and the part below the calf, and the combination of the first cavity 100 and the second cavity 200 is used to support the part above the calf; the third cavity 300 reduces the volume of the first cavity 100 to save water. The water volume or air volume in different sac cavities can be adjusted by adjusting the water or air inlet and outlet of the fluid injection port 400 (adjustable water nozzle or adjustable air nozzle).

[0049] Specifically, the first capsule cavity 100, the second capsule cavity 200 and the third capsule cavity 300 are respectively a water bag 101, a large air cushion 201 and a small air cushion 301; the first capsule cavity 100 and the second capsule cavity 200 form a water-air combination structure; wherein, when the water bag 101 is filled with water and the large air cushion 201 is filled with air, the water generates buoyancy on the air cushion, and the water can also penetrate into the upper surface of the air cushion.

[0050] Specifically, the air cushion 201 is composed of a plurality of air cavity units 210, such as Figure 2 and Figure 7 As shown, the air cavity units 210 are interconnected to form a multi-directional free folding structure, and can still achieve multi-directional free folding when the air pressure is saturated. Figure 7 The dotted line in the figure is the folding direction. The multi-directional free folding structure allows for free bending at any air pressure. The multiple air cavity units 210 bend along the curve of the human body under the weight of the human body, thereby providing sufficient wrapping for the human body. At the same time, since the multiple air cavity units 210 bend along the curve of the human body under the weight of the human body, the force-bearing area is increased and the pressure on the body is reduced, thereby improving the quality of sleep.

[0051] In addition, if Figure 8 As shown, water seepage holes 220 are also provided between the air cavity units 210, and the water in the first cavity 100 can penetrate from the bottom of the second cavity 200 through the water seepage holes 220 to the top of the second cavity 200 and contact the bottom of the upper surface of the first cavity 100. The hardness of the water-air multifunctional mattress is determined by the amount of water and air. It can be adjusted according to personal preferences or needs. The fluidity of the water allows the body structure to fit the surface of the water bag 101 according to the ergonomic curve when the human body lies down, and the buoyancy of the water allows the human body to feel decompression, avoiding insufficient or excessive support of the body.

[0052] When used outdoors in summer, water can take away body heat and give the user a cool feeling.

[0053] When used in winter, since water is not needed to take away the heat, water bag 101 does not need to be added with water. At this time, the water air mattress becomes a pure air mattress or adds thermal insulation materials to become a winter mattress with high thermal insulation value.

[0054] When the water and air in the small air cushion 301, the water bag 101 and the large air cushion 201 are drained away, they can be folded up and taken away, so as to achieve the effect of being easy to use.

[0055] Although the volume of the folded water-air multifunctional mattress is reduced, it is still not convenient to carry. A non-rigid material storage container is movably arranged between the small air cushion 301 and the water bag 101, preferably a storage bag. The small air cushion 301, the water bag 101 and the large air cushion 201 can be folded and placed in the storage bag after the water or air is released, and the small air cushion 301, the water bag 101 and the large air cushion 201 can be carried by carrying the storage bag.

[0056] The convenience of using the water-air multifunctional mattress depends not only on portability, but also on the convenience of operation. Therefore, an opening 110 is provided at one end of the first cavity away from the third cavity 300 to ensure that the interior of the first cavity 100 can be turned outward along the opening 110 .

[0057] When water needs to be added, the opening 110 is opened and a whole bucket of water can be put into the first capsule cavity 100 to achieve rapid water addition.

[0058] When the water in the first capsule cavity 100 needs to be drained, the opening 110 is opened to drain the water directly to the outside, and the first capsule cavity 100 is turned inside out, and the second capsule cavity 200 is naturally exposed to the outside for drying, cleaning and drying the inside to avoid the growth of bacteria and odor.

[0059] Furthermore, an opening 110 of a multi-folding structure is provided at one end of the first cavity 100 away from the third cavity 300; a fitting opening is provided at the place of the opening 110 farthest from the first cavity 100, and a fluid injection port 400 is provided on the multi-folding structure of the opening 110. This structure is conducive to sealing water in the first cavity 100. At the same time, a water-proof zipper 111 is used at the bag opening to improve ease of use and ensure waterproofness.

[0060] Reference Figure 3-6The first cavity 100, the second cavity 200 and the third cavity 300 are respectively a water bag 101, a large air cushion 201 and a small air cushion 301. The fluid injection port 400 penetrates the surface of the water bag 101 and extends into the large air cushion 201. An opening 110 is provided at one end of the water bag 101 away from the small air cushion 301 to ensure that the interior of the water bag 101 can be turned outward along the opening 110.

[0061] The opening 110 can be a sticky (magic tape) opening 110, preferably a water-proof zipper 111. The width of the opening 110 is similar to that of the water bag 101.

[0062] Furthermore, Figure 9-11 As shown, the opening portion 110 is designed as a multiple folding structure, and an adjustable fluid injection port 400 (water vapor inlet or water nozzle) is provided on the opening portion 110 designed as a multiple folding structure. The fluid injection port 400 also has an exhaust function.

[0063] Referring to the schematic diagram of different folding states of the opening, the zipper 111 and the Velcro are included. The water spout is located between the Velcro and folded together to achieve waterproofing. In order to further improve the water leakage function, the anti-leakage zipper 111 is used.

[0064] Open the zipper 111 of the opening 110, as Fig.12 As shown, turning the water bag 101 inside out to dry helps to dry quickly and reduce the breeding ground for bacteria.

[0065] When camping, when there is no electricity supply, water and air need to be added manually. In order to further improve the ease of use of the water-air multifunctional mattress, an external fluid container is designed. The fluid injection port 400 of the water-air multifunctional mattress is compatible with the fluid inlet and outlet nozzle of the external fluid container, so that the water-air multifunctional mattress can be manually added with water and air.

[0066] Specifically, the external fluid container is an air-filled bag and a water-filled bag 101 .

[0067] When in use, align the fluid inlet and outlet nozzles of the filled air bag and water bag 101 with the fluid injection port 400 of the water-air multifunctional mattress, press the air bag and water bag 101 to complete the filling and inflation of the small air cushion 301, the large air cushion 201 and the water bag 101 of the water-air multifunctional mattress.

[0068] By connecting a power fluid circulation device (water pump and air pump) or a power fluid temperature control circulation device (temperature-controlled water pump and air pump), water and air or water and air at a preset temperature can be injected into the mattress.

[0069] When camping in winter, people need a suitable temperature, so a cotton bag or other thermal insulation material matching the water vapor multifunctional mattress is designed. The cotton bag or other thermal insulation material is covered over the entire water vapor multifunctional mattress to provide a comfortable temperature.

[0070] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A water-air multifunctional mattress, characterized in that: The mattress is composed of a plurality of cavities, wherein the cavities include at least a first cavity and a second cavity; the second cavity is wrapped by the first cavity; the first cavity and the second cavity are respectively filled with a first fluid and a second fluid so that the second cavity floats in the first cavity; the first cavity and the second cavity are respectively provided with a fluid injection port; wherein the materials of the first cavity and the second cavity are both airtight, foldable, and non-rigid materials; the fluid volume in different cavities is adjusted by adjusting the fluid in and out of the fluid injection port, and the temperature of the mattress is adjusted by the fluid temperature.

2. The water-air multifunctional mattress according to claim 1, characterized in that: An opening is provided at one end of the second cavity away from the first cavity, and the opening is used for adding or draining fluid.

3. The water-air multifunctional mattress according to claim 1, characterized in that: It also includes a third cavity; the third cavity is connected to the first cavity; the third cavity is used to support a first human body part, and the first cavity or the second cavity or the first cavity and the second cavity are used together to support a second human body part; the first cavity is filled with a first fluid, and the second cavity and the third cavity are filled with a second fluid; a non-rigid material storage container is movably arranged between the first cavity and the third cavity, and the first cavity, the second cavity and the third cavity can be placed in the storage container.

4. The water-air multifunctional mattress according to claim 1, characterized in that: One end of the first cavity is provided with an opening with a multiple folding structure, the opening farthest from the first cavity is provided with a fitting opening or a zipper opening, the multiple folding structure of the opening is provided with a fluid injection port; the fold of the opening is higher than the highest point of the first cavity.

5. The water-air multifunctional mattress according to claim 1, characterized in that: The density of the first fluid is greater than the density of the second fluid; the fluid injection port is compatible with the fluid inlet and outlet nozzle of the external fluid container; the second capsule cavity is wrapped by the first capsule cavity to form a double-density structure.

6. The water-air multifunctional mattress according to any one of claims 1 to 5, characterized in that: The first cavity and the second cavity are an air cushion and a water bag respectively; wherein, when the water bag is filled with water and the air cushion is filled with air, the water generates buoyancy on the air cushion, and the water can also penetrate to the upper surface of the air cushion.

7. The water-air multifunctional mattress according to claim 6, characterized in that: It also includes a third capsule cavity connected to the first capsule cavity, wherein the first capsule cavity, the second capsule cavity and the third capsule cavity are respectively a large air cushion, a water bag and a small air cushion; the large air cushion and the small air cushion are composed of a plurality of air cavity units to form a multi-directional free bending structure; the second fluid and the third fluid are air, and the first fluid is water; The first capsule cavity and the second capsule cavity form a water-vapor combination structure; the first human body part and the second human body part are the legs and the human body part above the legs respectively; the small air cushion supports the legs, and the first capsule cavity and the second capsule cavity jointly support the human body part above the legs.

8. The water-air multifunctional mattress according to claim 6, characterized in that: The fluid injection port penetrates through the surface of the water bag and extends into the large air cushion.

9. The water-air multifunctional mattress according to claims 1-5, characterized in that: The first cavity and the third cavity are respectively filled with air. When the second cavity is not filled with any substance or is filled with air, the water-air multifunctional mattress is a pure air cushion mattress.

10. The water-air multifunctional mattress according to claim 5, characterized in that: The external fluid container is at least one of an air-filled bag, a water-filled bag, a power fluid circulation device, or a power fluid temperature-controlled circulation device.

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