Air cushion air valve and inflatable mattress

Abstract

The utility model provides an air cushion air valve and an inflatable mattress. An air cushion air valve comprises a lower air valve which is provided with an air inlet, an air outlet, a first air cavity communicated with the air inlet and a second air cavity communicated with the air outlet. The upper air valve is provided with an exhaust hole and a third air cavity which are separated; the end surfaces of the upper air valve and the lower air valve are in sealed connection; the knob is connected to the upper air valve and can synchronously drive the upper air valve to rotate around the axis, so that the upper air valve can be switched between an exhaust position and an inflation position relative to the lower air valve; when the upper air valve is located at the exhaust position, the exhaust hole is communicated with the second air cavity, and the third air cavity is communicated with the first air cavity; when the upper air valve is in the inflation position, the exhaust hole is in sealed connection with the surface of the lower air valve, and the third air cavity communicates with the first air cavity and the second air cavity. According to the air cushion air valve, the air cushion air valve can be exhausted and inflated by arranging the upper air valve, the lower air valve and the knob, and the air cushion air valve is simple in structure and easy to produce.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air valves, and particularly to an air cushion air valve and an inflatable mattress. Background Art

[0002] When a patient uses an anti-bedsore air mattress, in some cases, it is necessary to control the inflation and deflation of some airbags. For example, when the patient uses the bedpan, the airbag at the position where the bedpan is placed can be independently controlled to deflate, making it easier to place the bedpan under the patient's buttocks. However, the air path structure of the existing valve body for controlling inflation and deflation is relatively complex, resulting in a relatively slow inflation and deflation speed, and the structure of the air valve itself is also relatively complex, which is not conducive to production. Summary of the Utility Model

[0003] The present disclosure provides an air cushion air valve and an inflatable mattress to at least solve one of the technical problems existing in the prior art.

[0004] According to a first aspect of the present disclosure, there is provided an air cushion air valve, including,

[0005] A lower air valve having an air inlet, an air outlet, a first air chamber communicating with the air inlet, and a second air chamber communicating with the air outlet;

[0006] An upper air valve having an exhaust hole and a third air chamber separated therefrom; the upper air valve is coaxially connected to the lower air valve along the axis and the end faces therebetween are sealingly connected;

[0007] A knob connected to the upper air valve and capable of synchronously driving the upper air valve to rotate around the axis so that the upper air valve can switch between an exhaust position and an inflation position relative to the lower air valve; when the upper air valve is in the exhaust position, the exhaust hole communicates with the second air chamber and the third air chamber communicates with the first air chamber; when the upper air valve is in the inflation position, the exhaust hole is sealingly connected to the surface of the lower air valve and the third air chamber communicates with the first air chamber and the second air chamber.

[0008] In an implementable embodiment, it further includes,

[0009] A limit disk, which is in a circular ring structure and has a first limit portion and a second limit portion that protrude from the surface and are spaced apart; the limit disk is sleeved outside the upper air valve and is detachably connected to the lower air valve; the limit disk is configured to be selectively limited on the first limit portion or the second limit portion when the knob rotates clockwise or counterclockwise, so that the upper air valve can switch between an exhaust position and an inflation position relative to the lower air valve.

[0010] In an implementable embodiment, the knob includes,

[0011] A knob housing, which is hollow inside and has an opening at the bottom;

[0012] The first hollow shaft is formed by extending downward from the top surface of the knob housing and is coaxially arranged with the upper air valve.

[0013] The second hollow shaft is formed by extending downward from the top surface of the knob housing. The second hollow shaft is sleeved outside the first hollow shaft at an interval and the two are coaxially arranged.

[0014] The first stop portion is arranged between the second hollow shaft and the knob housing. The first stop portion is used to selectively stop on the first limit portion or the second limit portion, so that the upper air valve can switch relative to the lower air valve between the exhaust position and the inflation position.

[0015] In an implementable embodiment, third limit portion and fourth limit portion which are spaced apart are formed by extending from the hole wall of the annular hole of the limit disc towards its center direction.

[0016] A protruding second stop portion is provided on the end surface of the second hollow shaft. The second stop portion is configured to stop on the third limit portion or the fourth limit portion while the first stop portion stops on the first limit portion or the second limit portion.

[0017] In an implementable embodiment, the upper air valve includes:

[0018] The upper air valve body portion, on which a pair of third air cavities which are separately arranged are formed. The upper air valve body portion is also provided with a penetrating exhaust hole.

[0019] The first connection portion is a ring-shaped sandwich cavity structure and the first hollow shaft is accommodated in the sandwich cavity. The first connection portion is formed on the upper surface of the upper air valve body portion. The first connection portion is coaxially connected to the first hollow shaft along the radial direction.

[0020] In an implementable embodiment, the upper air valve and the lower air valve are provided with a penetrating first shaft hole along the axial direction, so that the two are connected by a T-shaped shaft.

[0021] The sandwich cavity of the first connection portion is in interference fit with the first hollow shaft.

[0022] The first hollow shaft is connected to the first connection portion and the T-shaped shaft by a pin shaft arranged along the radial direction.

[0023] In an implementable embodiment, it further includes

[0024] The upper air valve protection cover is a cover body structure with an opening at the top and an accommodation cavity inside. The upper air valve protection cover is arranged between the limit disc and the lower air valve and the three are detachably connected.

[0025] Wherein, the upper air valve protection cover covers the upper air valve and the upper end of the upper air valve is exposed from the opening.

[0026] In one implementable embodiment, a grease is coated on the contact surfaces of the upper air valve and the lower air valve to enable their sealed connection;

[0027] The cross-sectional area of the third air chamber is greater than or equal to the sum of the cross-sectional areas of the first air chamber and the second air chamber.

[0028] In one implementable embodiment, it includes:

[0029] A sealing piece that covers the bottom step of the lower air valve;

[0030] An elastic member with an elastic force. The elastic member is sleeved outside the T-shaped shaft and is arranged between the lower air valve and the sealing piece.

[0031] According to the second aspect of the present disclosure, an inflatable mattress is provided, which has an airbag and includes the air cushion air valve in any one of the implementable embodiments of the first aspect; wherein, the corners of the airbag are of an arc structure.

[0032] Compared with the prior art, the advantages of the present application are as follows: 1) The air cushion air valve of the present application can achieve exhaust and inflation by setting the upper air valve, the lower air valve and the knob, with a simple structure and easy production. 2) A grease is coated on the contact surfaces of the upper air valve and the lower air valve of the air cushion air valve of the present application to enable their sealed connection, realizing the sealed connection of the air path between the upper air valve and the lower air valve, without air leakage, and improving the inflation and exhaust efficiency. 3) The air charging and discharging air passage of the air cushion air valve of the present application is larger, and the inflation and exhaust speeds are faster. 4) When the air cushion air valve of the present application is applied to an air cushion, the air cushion air valve can quickly charge and discharge air, and due to the arc structure of the corners of the airbag, there are no protruding sharp corners after the air cushion airbag is inflated, and it will not dig into people when lying flat, which is more comfortable.

[0033] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understandable through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] By referring to the drawings and reading the detailed description below, the above and other purposes, features and advantages of the exemplary embodiments of the present disclosure will become easily understandable. In the drawings, several embodiments of the present disclosure are shown in an exemplary rather than restrictive manner, wherein:

[0035] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0036] Figure 1 Shows a schematic structural diagram of the air cushion air valve of the embodiment of the present disclosure;

[0037] Figure 2Shows a schematic structural diagram of the knob of the air cushion air valve according to an embodiment of the present disclosure;

[0038] Figure 3 Shows a schematic structural diagram of the upper air valve of the air cushion air valve according to an embodiment of the present disclosure Figure 1 ;

[0039] Figure 4 Shows a schematic structural diagram of the upper air valve of the air cushion air valve according to an embodiment of the present disclosure Figure 2 ;

[0040] Figure 5 Shows a schematic structural diagram of the upper air valve protection cover of the air cushion air valve according to an embodiment of the present disclosure Figure 1 ;

[0041] Figure 6 Shows a schematic structural diagram of the upper air valve protection cover of the air cushion air valve according to an embodiment of the present disclosure Figure 2 ;

[0042] Figure 7 Shows a schematic structural diagram of the lower air valve of the air cushion air valve according to an embodiment of the present disclosure Figure 1 ;

[0043] Figure 8 Shows a schematic structural diagram of the lower air valve of the air cushion air valve according to an embodiment of the present disclosure Figure 2 ;

[0044] Figure 9 Shows Figure 1 of the explosion schematic Figure 1 ;

[0045] Figure 10 Shows Figure 1 of the explosion schematic Figure 2 ;

[0046] Figure 11 Shows Figure 1 of the cross-section Figure 1 ;

[0047] Figure 12 Shows Figure 1 of the cross-section Figure 2 ;

[0048] Figure 13 Shows Figure 1 of the cross-section Figure 3 ;

[0049] Figure 14 Shows Figure 1 of the cross-section Figure 4 ;

[0050] Figure 15 Shows Figure 1 of the cross-section Figure 5 ;

[0051] Figure 16 shows Figure 1 sectional view of Figure 6 ;

[0052] Figure 17 shows the structural schematic of the upper air valve in the exhaust position of the embodiment of the present disclosure Figure 1 ;

[0053] Figure 18 shows the structural schematic of the upper air valve in the exhaust position of the embodiment of the present disclosure Figure 2 ;

[0054] Figure 19 shows the structural schematic of the upper air valve in the inflation position of the embodiment of the present disclosure Figure 1 ;

[0055] Figure 20 shows the structural schematic of the upper air valve in the inflation position of the embodiment of the present disclosure Figure 2 ;

[0056] Figure 21 shows the structural schematic diagram of the inflatable mattress of the embodiment of the present disclosure.

[0057] Description of the reference numerals in the figure: 1 - lower air valve, 11 - air inlet, 12 - air outlet, 13 - first air chamber, 14 - second air chamber, 15 - step, 16 - second screw hole;

[0058] 2 - upper air valve, 21 - exhaust hole, 22 - third air chamber, 23 - upper air valve body part, 24 - first connecting part, 25 - sandwich chamber, 241 - first mounting hole;

[0059] 3 - knob, 31 - knob housing, 32 - first hollow shaft, 33 - second hollow shaft, 34 - first stop part, 35 - second stop part, 321 - second mounting hole;

[0060] 4 - limit disc, 41 - first limit part, 42 - second limit part, 43 - first screw hole, 44 - annular hole, 45 - third limit part, 46 - fourth limit part;

[0061] 5 - T-shaped shaft, 51 - first shaft hole, 52 - first connecting hole;

[0062] 6 - pin shaft, 7 - upper air valve protection cover, 71 - opening, 72 - accommodating cavity, 73 - discharge hole;

[0063] 8 - sealing piece, 81 - avoidance opening, 9 - elastic member. Detailed implementation manners

[0064] To make the objectives, features, and advantages of the present disclosure more apparent and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present disclosure.

[0065] According to an embodiment of the present disclosure, as Figures 1-10 shown, the present utility model provides an air cushion air valve, including

[0066] a lower air valve 1, having an air inlet 11, an air outlet 12, a first air chamber 13 communicating with the air inlet 11, and a second air chamber 14 communicating with the air outlet 12;

[0067] an upper air valve 2, having an exhaust hole 21 and a third air chamber 22 separatedly arranged; the upper air valve 2 is coaxially connected to the lower air valve 1 along the axis and the end faces between the two are hermetically connected;

[0068] a knob 3, connected to the upper air valve 2 and capable of synchronously driving the upper air valve 2 to rotate around the axis, so that the upper air valve 2 can switch between an exhaust position and an inflation position relative to the lower air valve 1; when the upper air valve 2 is in the exhaust position, the exhaust hole 21 communicates with the second air chamber 14, and the third air chamber 22 communicates with the first air chamber 13; when the upper air valve 2 is in the inflation position, the exhaust hole 21 is hermetically connected to the surface of the lower air valve 1, and the third air chamber 22 communicates with the first air chamber 13 and the second air chamber 14.

[0069] For example, as Figure 4 、 Figure 7 、 Figures 11-13 shown, the upper air valve 2 and the lower air valve 1 are provided with a through first shaft hole 51 along the axial direction, so that the two are connected by a T-shaped shaft 5, so that the upper air valve can rotate around the axis of the T-shaped shaft 5 when rotating.

[0070] For example, a lubricating grease is coated on the contact surfaces of the upper air valve 2 and the lower air valve 1 to make the two hermetically connected. For example, the lubricating grease is silicone grease. By coating the lubricating grease, airtight connection of the air path can be achieved between the upper air valve and the lower air valve, without air leakage, improving the inflation and exhaust efficiency.

[0071] For example, the cross-sectional area of the third air chamber 22 is greater than or equal to the sum of the cross-sectional areas of the first air chamber 13 and the second air chamber 14. When the upper air valve 2 is in the exhaust position, the exhaust hole 21 communicates with the second air chamber 14. Therefore, when the air valve is exhausting, the gas only needs to be discharged through the second air chamber 14 and the exhaust hole 21; when the upper air valve is in the inflation position, the third air chamber 22 communicates with the first air chamber 13 and the second air chamber 14; therefore, the air charging and discharging air passage of the air cushion air valve in this application is larger, and the air charging and discharging speed is faster.

[0072] The air cushion air valve of this application can achieve exhaust and inflation by setting the upper air valve 2, the lower air valve 1 and the knob 3. The structure is simple and easy to produce. Therefore, when this application is applied to an air cushion, the rapid air charging and discharging of the air cushion air valve makes the air cushion airbag have no protruding sharp corners after inflation, and it will not dig into people when lying flat, which is more comfortable.

[0073] In one embodiment, the air cushion air valve of this application further includes,

[0074] A limit disk 4, which is of an annular structure, and has first limit portions 41 and second limit portions 42 formed on its surface and protruding from the surface and arranged at intervals. The limit disk 4 is sleeved outside the upper air valve 2 and is detachably connected to the lower air valve 1; the limit disk 4 is configured to be selectively limited to the first limit portion 41 or the second limit portion 42 when the knob 3 rotates clockwise or counterclockwise, so that the upper air valve 2 can be switched relative to the lower air valve 1 between the exhaust position and the inflation position.

[0075] For example, as Figures 9-10 shown, a plurality of first screw holes 43 are formed in the limit disk 4, and second screw holes 16 are formed in the lower air valve 1 at corresponding positions. The limit disk 4 and the lower air valve 1 are detachably connected by screws passing through the first screw holes 43 and the second screw holes 16 in sequence.

[0076] For example, as Figure 2 shown, the knob 3 includes,

[0077] A knob housing 31, which is hollow inside and has an open bottom;

[0078] A first hollow shaft 32, which extends downward from the top surface of the knob housing 31 and is coaxially arranged with the upper air valve;

[0079] A second hollow shaft 33, which extends downward from the top surface of the knob housing 31. The second hollow shaft 33 is sleeved outside the first hollow shaft 32 at intervals and the two are coaxially arranged;

[0080] A first stop portion 34, which is arranged between the second hollow shaft 33 and the knob housing 31. The first stop portion 34 is used to selectively stop on the first limit portion 41 or the second limit portion 42, so that the upper air valve 2 can be switched relative to the lower air valve 1 between the exhaust position and the inflation position.

[0081] Among them, there are two first stop portions 34, which are arranged at intervals; the end face of the knob housing 31 is in contact with the surface of the limit disk 4. By rotating the knob housing 31 clockwise or counterclockwise, the first stop portion 34 can be stopped on the first limit portion 41 or the second limit portion 42, so as to realize the inflation or exhaust of the air cushion air valve.

[0082] In this embodiment, as Figures 3-4 shown, the upper air valve 2 includes:

[0083] An upper air valve body portion 23, on which a pair of third air cavities 22 separated from each other are formed, and the upper air valve body portion 23 is also provided with a through exhaust hole 21;

[0084] A first connecting portion 24, which is an annular sandwich cavity structure and a first hollow shaft 32 is accommodated in the sandwich cavity 25. The first connecting portion 24 is formed on the upper surface of the upper air valve body portion 23, and the first connecting portion 24 is coaxially connected to the first hollow shaft 32 in the radial direction.

[0085] Furthermore, as Figures 11-13 shown, the first hollow shaft 32 is connected to the first connecting portion 24 and the T-shaped shaft 5 through a pin shaft 6 arranged in the radial direction.

[0086] Specifically, as Figures 2-3 、 Figures 9-10 shown, a first connection hole 52 is opened at the end of the T-shaped shaft 5. Correspondingly, a first installation hole 241 for the pin shaft 6 to pass through is opened on the first connecting portion 24, and a second installation hole 321 for the pin shaft 6 to pass through is opened on the first hollow shaft 32. Therefore, when the first hollow shaft 32 of the knob 3 is inserted into the sandwich cavity 25 of the first connecting portion 24, after the pin shaft 6 passes through the first installation hole 241, the second installation hole 321, and the first connection hole 52 in sequence, the first hollow shaft 32 of the knob, the T-shaped shaft 5, and the first connecting portion 24 of the upper air valve 2 are connected by the same pin shaft 6, so that the knob 3 and the upper air valve 2 are rotationally relatively fixed through the pin shaft 6. Thus, it can conveniently realize that when the knob rotates, the upper air valve is driven to rotate synchronously, so as to realize the switching of the upper air valve relative to the lower air valve between the inflation position and the exhaust position.

[0087] Furthermore, as Figures 10-13 shown, a first hollow shaft 32 is accommodated in the sandwich cavity 25 of the first connecting portion, and the sandwich cavity 25 of the first connecting portion is in interference fit with the first hollow shaft 32.

[0088] In one embodiment, as Figures 9-10 shown, third limit portions 45 and fourth limit portions 46 are formed at intervals extending from the inner wall of the annular hole 44 of the limit disk 4 towards its center;

[0089] The end surface of the second hollow shaft 33 is provided with a protruding second stop portion 35, and the second stop portion 35 is configured to stop on the third limit portion 45 or the fourth limit portion 46 while the first stop portion 34 stops on the first limit portion 41 or the second limit portion 42.

[0090] As Figures 11-13 shown, the length of the first hollow shaft 32 of the knob 3 is slightly longer than the length of the second hollow shaft 33. When the first hollow shaft 32 is press-fitted into the sandwich cavity 25 of the first connection portion 24 of the upper air valve 2, the second hollow shaft 33 is located outside the first connection portion and inserted into the annular hole 44 of the limit disk 4. Therefore, when the knob 3 is rotated clockwise or counterclockwise, the knob 3 synchronously drives the upper air valve 2 to rotate around the axis of the T-shaped shaft 5, so that the first stop portion 34 can selectively stop on the first limit portion 41 or the second limit portion 42, and at the same time, the second stop portion 35 can selectively stop on the third limit portion 45 or the fourth limit portion 46.

[0091] Further, in this embodiment, by rotating the knob 3 clockwise or counterclockwise by 180°, the upper air valve can be switched between the exhaust position and the inflation position relative to the lower air valve. Therefore, in order to achieve the positioning of 180°, as Figures 14-16 shown, there are two first stop portions 34 which are arranged at intervals, and the included angle between the two first stop portions 34 is 90°. The included angle between the first limit portion and the second limit portion is also 90°, so that each first stop portion 34 has a rotation range of 180°. One of the first stop portions 34 is used to abut against the first limit portion 41, and the other first stop portion 34 is used to abut against the second limit portion 42. Therefore, when the knob rotates 180° from the inflation position to the exhaust position, both first stop portions 34 rotate 180°.

[0092] Correspondingly, the third limit portion 45 and the fourth limit portion 46 are generally arranged at 180°, and the second stop portion 35 has a rotation range of 180°. The formation positions of the third limit portion and the fourth limit portion can be adjusted adaptively according to the rotation range of the knob.

[0093] Of course, there can also be one first stop portion 34. Correspondingly, the included angle between the first limit portion and the second limit portion should be set to 180°. When the knob is rotated, the first stop portion 34 can also selectively abut against the first limit portion or the second limit portion.

[0094] As Figures 15-20 shown, in this embodiment, the upper air valve 2 of the present application can be switched between the exhaust position and the inflation position relative to the lower air valve 1. Figures 15-18In the figure, the first stop portion 34 of the knob 3 abuts against the first limiting portion 41, and the second stop portion 35 abuts against the fourth limiting portion 46. At this time, the upper air valve 2 is in the exhaust position, and the exhaust hole 21 of the upper air valve 2 is communicated with the second air chamber 14 of the lower air valve 1 and the air outlet 12, so that the gas in the air cushion can be discharged through the air outlet 12, the second air chamber 14, and the exhaust hole 2. As Figures 19-20 shown, when the knob 3 is rotated clockwise by 180°, the first stop portion 34 of the knob 3 abuts against the second limiting portion 42, and the second stop portion 35 abuts against the third limiting portion 45. At this time, the upper air valve 2 is in the inflation position, and the air inlet of the lower air valve 1 is communicated with the air outlet 12 through the first air chamber 13, the third air chamber 22 of the upper air valve 2, the second air chamber 14 of the lower air valve 1, so that the gas of the air pump is filled into the air mattress airbag through the air inlet of the lower air valve.

[0095] In one embodiment, as shown in 5-6, Figures 9-13 shown, the air cushion air valve of the present application further includes

[0096] The upper air valve protection cover 7 is a cover structure with an opening 71 at the top and an accommodation cavity 72 inside; the upper air valve protection cover 7 is arranged between the limiting disc 4 and the lower air valve 1 and the three are detachably connected;

[0097] The sealing piece 8 covers the bottom step 15 of the lower air valve 1;

[0098] The elastic member 9 has an elastic force. The elastic member 9 is sleeved outside the T-shaped shaft 5 and is arranged between the lower air valve 1 and the sealing piece 8. Among them, the elastic member 9 is a conical spring. The upper air valve protection cover 7 is also formed with a screw hole, so that the relative fixation of the limiting disc 4, the upper air valve protection cover 7 and the lower air valve 1 is realized through screws;

[0099] Among them, the upper air valve protection cover 7 covers the upper air valve 2 and the upper end of the upper air valve 2 exposes from the opening 71.

[0100] Among them, at the position corresponding to the exhaust hole 21 of the upper air valve 2, a discharge hole 73 is opened on the upper air valve protection cover 7, so that the gas discharged from the exhaust hole 21 is discharged from the discharge hole 73.

[0101] As Figures 10-13As shown, a step 15 is formed at the bottom of the lower air valve 1. An avoidance opening 81 is formed on the sealing piece 8. The T-shaped shaft 5 passes through the avoidance opening 81 of the sealing piece 8. The conical spring is arranged between the lower air valve 1 and the sealing piece 8 and the conical spring is sleeved outside the T-shaped shaft 5. In the air cushion air valve of the present application, the conical spring is squeezed between the lower air valve 1 and the sealing piece 8, so that the conical spring has a resilience force, forming a vertically downward extrusion force on the sealing piece 8 and the T-shaped shaft 5. Since the end of the T-shaped shaft 5 connects the first hollow shaft of the knob and the first connecting part of the upper air valve through the pin shaft 6, when the T-shaped shaft is subjected to the downward extrusion force of the conical spring, it can drive the upper air valve to form a downward extrusion force on the lower air valve, that is, the upper / lower air valves are tightly pressed through the sealing piece and the conical spring, so that the upper / lower air valves are hermetically connected, and further ensure the stability of the installation between the upper / lower air valves and the knob.

[0102] As Figure 5 、 Figure 9 shown, the end of the upper air valve protection cover 7 is placed on the surface of the lower air valve. And in order to further fixedly connect the two, mutually adapted clamping protrusions and clamping grooves are respectively formed on the upper air valve protection cover and the lower air valve. The upper air valve protection cover 7 can prevent dust from entering the mating surface of the upper / lower air valves and extend the sealing life of the air valve.

[0103] According to the second aspect of the present disclosure, as Figure 21 shown, the present utility model further provides an inflatable mattress having an airbag, including the air cushion air valve in any one of the embodiments of the first aspect; wherein, the corners of the airbag are of an arc structure. The inflatable mattress with the air cushion air valve can simultaneously realize the rapid inflation and deflation of the air valve, improving the inflation efficiency.

[0104] Because for the current anti-bedsore air mattress, in some cases, it is necessary to control the inflation and deflation of some airbags. For example, when the patient uses the toilet, the airbag at the position where the bedpan is placed can be separately controlled for deflation operation, so that it is easier to place the bedpan under the patient's buttocks. Therefore, the inflatable mattress equipped with the air cushion air valve of the present application can be placed at the bedpan position of the air mattress, so as to realize rapid inflation and deflation. In addition, since the corners of the airbag are of an arc structure, the heat-sealing curve of the airbag segment of the inflatable mattress at this position makes the airbag have no protruding sharp corners after inflation, and it will not dig into people when lying flat, which is more comfortable.

[0105] When the inflatable mattress with the air cushion air valve of the present application is installed at the bedpan position of the air mattress, the cavity of the inflatable mattress is completely isolated and not communicated with the main cavity of the air mattress, and the cavity of the inflatable mattress can be alternately inflated and deflated and inflated simultaneously with the main cavity of the air mattress.

[0106] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. No limitations are imposed herein.

[0107] In addition, the terms "first" and "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this disclosure, "a plurality" means two or more, unless otherwise specifically and clearly defined.

[0108] The orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this application.

[0109] Unless otherwise clearly specified and defined, the terms "arranged" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0110] Descriptions with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this disclosure. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0111] In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0112] As described above, it is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claimed rights.

Claims

1. An air cushion air valve, characterized in that: Comprising, A lower air valve having an air inlet, an air outlet, a first air chamber communicating with the air inlet, and a second air chamber communicating with the air outlet; An upper air valve having an exhaust hole and a third air chamber separated therefrom; the upper air valve is coaxially connected to the lower air valve along the axis and the end faces between them are sealingly connected; A knob connected to the upper air valve and capable of synchronously driving the upper air valve to rotate around the axis so that the upper air valve can switch relative to the lower air valve between an exhaust position and an inflation position; when the upper air valve is in the exhaust position, the exhaust hole communicates with the second air chamber and the third air chamber communicates with the first air chamber; when the upper air valve is in the inflation position, the exhaust hole is sealingly connected to the surface of the lower air valve and the third air chamber communicates with the first air chamber and the second air chamber.

2. The air cushion air valve according to claim 1, characterized in that: Further comprising, A limit disk which is of an annular structure and has a first limit portion and a second limit portion formed on its surface protruding from the surface and arranged at intervals; the limit disk is sleeved outside the upper air valve and is detachably connected to the lower air valve; the limit disk is configured such that when the knob rotates clockwise or counterclockwise, it can be selectively limited to the first limit portion or the second limit portion, so that the upper air valve can switch relative to the lower air valve between the exhaust position and the inflation position.

3. The air cushion air valve according to claim 2, characterized in that: The knob includes, A knob housing which is hollow inside and has an opening at the bottom; A first hollow shaft extending downward from the top surface of the knob housing and coaxially arranged with the upper air valve; A second hollow shaft extending downward from the top surface of the knob housing, the second hollow shaft being sleeved outside the first hollow shaft at intervals and the two being coaxially arranged; A first stop portion provided between the second hollow shaft and the knob housing, the first stop portion being used for selectively stopping at the first limit portion or the second limit portion so that the upper air valve can switch relative to the lower air valve between the exhaust position and the inflation position.

4. The air cushion air valve according to claim 3, wherein: A third limit portion and a fourth limit portion spaced apart from each other are formed extending from the inner wall of the annular hole of the limit disk towards its center; The end surface of the second hollow shaft is provided with a protruding second stop portion, and the second stop portion is configured such that while the first stop portion stops at the first limit portion or the second limit portion, the second stop portion can stop at the third limit portion or the fourth limit portion.

5. The air cushion air valve according to claim 3, characterized in that: The upper air valve includes: An upper air valve body portion on which a pair of separated third air chambers are formed, and the upper air valve body portion is also provided with a through exhaust hole; A first connecting portion which is of an annular sandwich cavity structure and the sandwich cavity accommodates the first hollow shaft, the first connecting portion is formed on the upper surface of the upper air valve body portion, and the first connecting portion is coaxially connected to the first hollow shaft along the radial direction.

6. The air cushion air valve according to claim 5, characterized in that: The upper air valve and the lower air valve are provided with a through first shaft hole along the axial direction so that they are connected by a T-shaped shaft; The sandwich cavity of the first connecting portion is in interference fit with the first hollow shaft; The first hollow shaft is connected to the first connecting portion and the T-shaped shaft by a pin arranged along the radial direction.

7. The air cushion air valve according to claim 2, characterized in that: Further comprising, An upper air valve protection cover which is of a cover body structure having an opening at the top and an accommodation cavity inside; the upper air valve protection cover is arranged between the limit disk and the lower air valve and the three are detachably connected; Wherein, the upper air valve protection cover covers the upper air valve and the upper end of the upper air valve protrudes from the opening.

8. The air cushion air valve according to claim 1, wherein: The contact surfaces of the upper air valve and the lower air valve are coated with grease to enable their sealed connection; The cross-sectional area of the third air chamber is greater than or equal to the sum of the cross-sectional areas of the first air chamber and the second air chamber.

9. The air cushion air valve according to any one of claims 1-8, characterized in that: Comprising: A sealing piece, which covers the bottom step of the lower air valve; An elastic member with an elastic force, which is sleeved outside the T-shaped shaft and is arranged between the lower air valve and the sealing piece.

10. An inflatable mattress having an airbag, characterized in that: Including the air cushion air valve according to any one of claims 1-9; wherein, the corners of the airbag are of an arc structure.

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