Patent Publication Number: US-2021169232-A1

Title: Inflatable Mattress

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present disclosure claims priority of Chinese Patent Application No. 201922166255.6, filed with the Chinese Patent Office on Dec. 5, 2019, entitled “Inflatable Mattress”, the contents of which are incorporated herein by reference in its entirety. 
     TECHNICAL FIELD 
     The present disclosure relates to the technical field of inflatable products, and in particular to an inflatable mattress (or air mattress). 
     BACKGROUND ART 
     Inflatable mattresses are articles which are now used more and more frequently at home or during travel, which can be conveniently folded and stored and provide a good experience in use. 
     However, there are still some problems with the existing inflatable mattresses. Upon an edge of the mattress is compressed, it is collapsed to a deep degree, which will affect the user experience and make a person lying thereon feel uncomfortable. 
     SUMMARY 
     Embodiments of the present disclosure are implemented as follows: 
     An embodiment of the present disclosure provides an inflatable mattress, comprising: a first cavity body, a second cavity body, and a third cavity body; 
     wherein the first cavity body comprises a top wall, a bottom wall, and a side surrounding wall, the top wall and/or the bottom wall serves as a lying part for a user to lie thereon, wherein a first air cavity is formed by the top wall, the bottom wall, and the side surrounding wall; 
     the second cavity body is disposed at a junction between the lying part and the side surrounding wall and the second cavity body together with an outer wall surface of the lying part and an outer wall surface of the side surrounding wall form a second air cavity, and the third cavity body is disposed at a junction between the lying part and the second cavity body and the third cavity body together with an outer wall surface of the second cavity body and the outer wall surface of the lying part form a third air cavity; 
     a height of the third cavity body is lower than a height of the second cavity body in a height direction of the inflatable mattress when in use. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
       In order to more clearly illustrate technical solutions of embodiments of the present disclosure, drawings required for use in the embodiments will be described briefly below. It is to be understood that the drawings below are merely illustrative of some embodiments of the present disclosure, and therefore should not be considered as limiting its scope. It will be understood by those of ordinary skill in the art that other relevant drawings can also be obtained from these drawings without any inventive effort. 
         FIG. 1  is a schematic structural diagram of an inflatable mattress according to the present disclosure; 
         FIG. 2  is a partially sectional view of  FIG. 1 ; 
         FIG. 3  is a partially enlarged view of a portion A in  FIG. 2 ; 
         FIG. 4  is a partially sectional view of an inflatable mattress of the present disclosure; 
         FIG. 5  is a partially enlarged view of a portion B in  FIG. 4 ; 
         FIG. 6  is a partially sectional view of a first modified structure of the inflatable mattress of the present disclosure; 
         FIG. 7  is a partially sectional view of a second modified structure of the inflatable mattress of the present disclosure; 
         FIG. 8  is a partially sectional view of a third modified structure of the inflatable mattress of the present disclosure; 
         FIG. 9  is a partially sectional view of a fourth modified structure of the inflatable mattress of the present disclosure; 
         FIG. 10  is a schematic structural diagram of a fifth modified structure of the inflatable mattress of the present disclosure; 
         FIG. 11  is a schematic structural diagram of a sixth modified structure of the inflatable mattress of the present disclosure; 
         FIG. 12  is a schematic structural diagram of a surrounding wall and two supporting walls of the present disclosure; 
         FIG. 13  is a schematic structural diagram of a first partitioning wall of the present disclosure; 
         FIG. 14  is a schematic structural diagram of a seventh modified structure of the inflatable mattress of the present disclosure; 
         FIG. 15  is a schematic exploded structural view of the inflatable mattress corresponding to  FIG. 13 ; and 
         FIG. 16  is a sectional view of the inflatable mattress with the seventh modified structure of the present disclosure. 
     
    
    
     
         
         
           
             Reference Numerals:  10 -first cavity body;  11 -top wall;  12 -bottom wall;  13 -side surrounding wall;  14 -lying part;  15 -first air cavity;  20 -second cavity body;  21 -second air cavity;  30 -third cavity body;  31 -third air cavity;  40 -double-covered air valve;  50 -built-in DC electric inflating pump;  61 -honeycomb-structured circular supporting strap;  62 -closed loop-shaped supporting strap;  63 -straight-strip supporting strap;  64 -vertical-strip supporting strap;  65 -closed wavy supporting strap;  70 -fourth cavity body;  71 -fourth air cavity;  80 -inner enclosure;  81 -through hole;  90 -outer enclosure;  001 -barrier wall;  002 -main cavity;  003 -annular cavity;  301 -sub-cavity;  100 -inflatable mattress;  110 -supporting wall;  111 -top wall;  112 -bottom wall;  120 -surrounding wall;  121 -bent portion;  130 -first partitioning wall;  131 -first partitioning strap;  132 -first side edge;  133 -second side edge;  134 -first fracture portion;  140 -main air storage cavity;  141 -first sub-cavity;  142 -second sub-cavity;  143 -third sub-cavity;  144 -fourth sub-cavity;  150 -second partitioning wall;  151 -second partitioning strap;  152 -second fracture portion;  160 -pull strap. 
           
         
       
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     In order to further clarify the objects, technical solutions, and advantages of the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is apparent that the embodiments to be described are some, but not all of the embodiments of the present disclosure. Generally, the components of the embodiments of the present disclosure, as described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. 
     Thus, the following detailed description of the embodiments of the present disclosure, as represented in the figures, is not intended to limit the scope of the present disclosure as claimed, but is merely representative of selected embodiments of the present disclosure. All the other embodiments obtained by those of ordinary skill in the art in light of the embodiments of the present disclosure without inventive efforts will fall within the scope of the present disclosure as claimed. 
     It should be noted that similar reference numerals and letters refer to similar items in the following figures, and thus once an item is defined in one figure, it may not be further defined or explained in the following figures. 
     In the description of the present disclosure, it should be noted that orientation or positional relations indicated by the terms such as “inner” and “outer” are the orientation or positional relations shown based on the figures, or the orientation or positional relations in which the product is conventionally placed in use, and these terms are intended only to facilitate the description of the present disclosure and simplify the description, but not intended to indicate or imply that the referred devices or elements must be in a particular orientation or constructed or operated in the particular orientation, and therefore should not be construed as limiting the present disclosure. In addition, terms such as “first” and “second” are used for distinguishing the description only, and should not be understood as an indication or implication of relative importance. 
     In the description of the present disclosure, it should also be noted that the terms “disposed” and “connected” should be understood broadly unless otherwise expressly specified or defined. For example, a connection may be fixed connection or detachable connection or integral connection, may be mechanical connection or electrical connection, or may be direct coupling or indirect coupling via an intermediate medium or internal communication between two elements. The specific meanings of the above-mentioned terms in the present disclosure can be understood by those of ordinary skill in the art according to specific situations. 
     It should be noted that the features in the embodiments of the present disclosure may be combined with each other without conflict. 
     An object of the present disclosure is, for example, to provide an inflatable mattress by which at least the technical problem of a collapsed edge of the prior inflatable mattress can be alleviated. 
     Additionally, according to some embodiments of the present disclosure, optionally, the top wall is provided as the lying part, both the lying part and the bottom wall are provided with supporting straps, and at least one of the supporting straps on the lying part is connected with at least one of the supporting straps on the bottom wall by a limiting pull strap. 
     With the arrangement of the supporting straps, when the inflatable mattress is placed and used even in a relatively smooth place, the inflatable mattress can be kept in place and is prevented from shifting laterally during use so as to ensure the user experience. 
     Optionally, the inflatable mattress further comprises a fourth cavity body, wherein the fourth cavity body is disposed at a junction between the bottom wall and the side surrounding wall and fourth cavity body together with an outer wall surface of the bottom wall and the outer wall surface of the side surrounding wall form a fourth air cavity. 
     Due to the presence of the fourth cavity body, after the fourth air cavity is inflated, a support structure can be formed in the circumferential direction of the bottom wall to further enhance the support strength of the edge portion of the inflatable mattress, which is conducive to preventing collapse of the edge portion of the inflatable mattress. 
     Optionally, both the top wall and the bottom wall are provided as the lying parts, the lying parts are provided with supporting straps, and the respective supporting straps of the two lying parts are connected by limiting pull straps. 
     With the arrangement of the supporting straps, when the inflatable mattress is placed and used even in a relatively smooth place, the inflatable mattress can be kept in place and is prevented from shifting laterally during use so as to ensure the user experience. Moreover, both the top wall and the bottom wall are designed as the lying parts, such that the inflatable mattress can be used more conveniently, and the inconvenience of distinguishing the front and back sides is eliminated. 
     Optionally, the second cavity body and the third cavity body adjacent to each other are used as a support group, and the first cavity body is symmetrically provided with two support groups on the two opposite sides in the height direction of the inflatable mattress. 
     Due to the presence of the two symmetrical support groups, when a force is applied in a vertical direction of the inflatable matress, the inflatable mattress has better support performance and misalignment of the upper and lower support groups is unlikely to occur. 
     Optionally, the second cavity body and the third cavity body are both distributed in a shape of two concentric rectangles. 
     The second cavity body and the third cavity body distributed in the shape of two concentric rectangles can ensure more comprehensive support at the circumferential edge of the first cavity body to reduce the area having weak support. Moreover, the gas in the air cavity is enabled to be distributed more uniformly, which is conducive to prevention of collapse of the edge positons. 
     Optionally, each supporting strap is a closed loop-shaped supporting strap, a honeycomb-structured circular supporting strap, a straight-strip supporting strap, a vertical-strip supporting strap, a single-strip wavy supporting strap, or a closed wavy supporting strap. 
     All of the various types of supporting straps can achieve a good effect when in use, and the users can be provided with different choices to improve the user experience. 
     Optionally, the first air cavity, the second air cavity, and the third air cavity communicate with one another. 
     Since the gas can circulate among the air cavities, only one valve is required for realizing the inflation and deflation of the multiple air cavities, and the inflation and deflation can be performed with less time and operations and with great convenience. 
     Optionally, the inflatable mattress comprises a valve, wherein the valve is disposed on the side surrounding wall, and the valve is configured to communicate the first air cavity with an external environment or disconnect the first air cavity from the external environment. 
     A different cover may be selected to be opened depending on the deflation or inflation, so that no air leakage occurs during inflation, the deflation can be performed at a faster speed, and there is no need to separately provide an additional deflation valve. 
     Optionally, the inflatable mattress further comprises a built-in DC electric inflating pump which is disposed on the side surrounding wall and configured to inflate the inflatable mattress. 
     Due to the arrangement of the built-in DC electric inflating pump, it is unnecessary to separately provide an external inflating pump when the inflatable mattress needs to be inflated, so that it is more convenient to carry and use the inflatable mattress when going out, and its use is avoided from being affected in case that the inflating pump is forgotten to be carried. 
     An embodiment of the present disclosure also provides an inflatable mattress. The inflatable mattress comprises: a top wall, a bottom wall, an inner enclosure, an outer enclosure, and at least one barrier wall, wherein the top wall and the bottom wall are arranged at an interval in a thickness direction of the inflatable mattress, the inner enclosure extends in a circumferential direction of the top wall or the bottom wall and is connected with both of the top wall and the bottom wall, and a main cavity is defined by the inner enclosure, the top wall, together with the bottom wall; the outer enclosure is located on an outer side of the inner enclosure and extends in a circumferential direction of the inner enclosure, the outer enclosure is connected with the top wall or/and the inner enclosure on one side thereof in the thickness direction of the inflatable mattress and is connected with the bottom wall or/and the inner enclosure on the other side thereof, and an annular cavity is defined by the outer enclosure together with the inner enclosure; the at least one barrier wall is each disposed in the annular cavity, and each barrier wall extends in the circumferential direction of the inner enclosure and is connected with both of the inner enclosure and the outer enclosure, so that the annular cavity is divided into a plurality of sub-cavities arranged sequentially in the thickness direction of the inflatable mattress. 
     Optionally, the plurality of sub-cavities all communicate with the main cavity. 
     Optionally, a through hole is provided in the inner enclosure so that at least one of the plurality of sub-cavities communicates with the main cavity. 
     An embodiment of the present disclosure also provides an inflatable mattress. The inflatable mattress comprises: 
     two supporting walls, a surrounding wall, and a first partitioning wall, wherein the two supporting walls are arranged at an interval in a thickness direction of the inflatable mattress, wherein the surrounding wall is connected with both of the two supporting walls and extends in a circumferential direction of the supporting wall, and a main air storage cavity is defined by the surrounding wall together with the two supporting walls; the first partitioning wall is located in the main air storage cavity, the first partitioning wall is connected with both the surrounding wall and one of the two supporting walls or is connected with both of the two supporting walls, the first partitioning wall extends in a circumferential direction of the surrounding wall, and the first partitioning wall divides the main air storage cavity into a first sub-cavity and a second sub-cavity; the first partitioning wall has at least one first fracture portion in its extension direction, and the first sub-cavity communicates with the second sub-cavity through the at least one first fracture portion. 
     Optionally, the first partitioning wall comprises a plurality of first partitioning straps, wherein each of the first partitioning straps is connected with both the surrounding wall and one of the two supporting walls, the plurality of first partitioning straps are arranged at intervals in the circumferential direction of the surrounding wall, and one of the first fraction portions is formed between the respective first partitioning straps adjacent in the circumferential direction of the surrounding wall. 
     Optionally, the surrounding wall has bent portions in its extension direction, and one of the first fracture portions is correspondingly disposed where at least one of the bent portions is provided. 
     Optionally, the number of the bent portions is four, and one first fracture portion is correspondingly disposed at each of the bent portions. 
     Optionally, the second sub-cavity is on an outer side of the first sub-cavity, and the second sub-cavity has a triangular cross-sectional shape, wherein the cross section is a plane perpendicular to an extension direction of the second sub-cavity. 
     Optionally, the inflatable mattress further comprises a second partitioning wall, wherein the first partitioning wall and the second partitioning wall are arranged at an interval in the thickness direction of the inflatable mattress, the second partitioning wall is in the main air storage cavity, the second partitioning wall is connected with both the surrounding wall and the other one of the two supporting walls, the second partitioning wall extends in the circumferential direction of the surrounding wall, and the second partitioning wall separates the first sub-cavity into a third sub-cavity and a fourth sub-cavity communicating with each other. 
     Optionally, the second partitioning wall has at least one second fracture portion in its extension direction, and the third sub-cavity communicates with the fourth sub-cavity through the at least one second fracture portion. 
     Optionally, the fourth sub-cavity is on an outer side of the third sub-cavity, and the fourth sub-cavity has a triangular cross-sectional shape, wherein the cross section is a plane perpendicular to an extension direction of the fourth sub-cavity. 
     Optionally, the inflatable mattress further comprises a pull strap, wherein the pull strap is in the main air storage cavity, and two ends of the pull strap are connected with the two supporting walls, respectively. 
     An embodiment of the present disclosure also provides an inflatable bed. The inflatable bed comprises: 
     an inflatable mattress according to any one of the preceding embodiments. 
     The embodiments of the present disclosure include, for example, the following beneficial effects: 
     The inflatable mattress is inflated. When a user is lying on the inflatable mattress, the first cavity body provides the majority of support for the user, and when the user&#39;s body presses against an edge portion of the inflatable mattress, the user is supported by the second cavity body. The third cavity body having a height lower than that of the second cavity body is unlikely to be directly pressed down and can provide further support at the edge position to prevent excessive collapse of the edge position. Moreover, since the third cavity body is connected with both of the second cavity body and the lying part, the third cavity body has a certain pulling effect on the second cavity body to further prevent collapse of the second cavity body due to a force applied thereto and to provide a better using experience for the user. 
     Referring to  FIG. 1  to  FIG. 3 , the present disclosure provides an inflatable mattress, comprising: a first cavity body  10 , a second cavity body  20 , and a third cavity body  30 . 
     The first cavity body  10  comprises a top wall  11 , a bottom wall  12 , and a side surrounding wall  13 , wherein the top wall  11  and/or the bottom wall  12  serve(s) as a lying part  14  for a user to lie thereon, and a first air cavity  15  is formed by the top wall  11 , the bottom wall  12 , and the side surrounding wall  13 . 
     The second cavity body  20  is disposed at a junction between the lying part  14  and the side surrounding wall  13  and the second cavity body together with an outer wall surface of the lying part  14  and an outer wall surface of the side surrounding wall  13  form a second air cavity  21 ; the third cavity body  30  is disposed at a junction between the lying part  14  and the second cavity body  20  and the third cavity body together with an outer wall surface of the second cavity body  20  and the outer wall surface of the lying part  14  form a third air cavity  31 . 
     After the inflatable mattress is filled with a gas (air usually), the height of the third cavity body  30  is lower than the height of the second cavity body  20  in the height direction of the inflatable mattress. 
     Here, the first air cavity  15 , the second air cavity  21 , and the third air cavity  31  communicate with one another. In other words, the gas in the first air cavity  15 , the gas in the second air cavity  21 , and the gas in the third air cavity  31  can circulate through one another. Since the gas can circulate among the multiple air cavities, inflation and deflation of the multiple air cavities may be realized by providing the inflatable mattress with only one valve, and the inflation and deflation can be performed with less time and simplified operations, which brings great convenience. 
     When a user is lying on an inflatable mattress filled with gas, the first cavity body  10  provides the majority of support for the user, and when the user&#39;s body presses against an edge portion of the inflatable mattress, the user is supported by the second cavity body  20 . Since the third cavity body  30  has a height lower than that of the second cavity body  20 , the third cavity body is unlikely to be directly pressed down and can provide additional support at the edge position to prevent excessive collapse of the edge position. Moreover, since the third cavity body  30  is connected with both of the second cavity body  20  and the lying part  14 , the third cavity body  30  has a certain pulling effect on the second cavity body  20  to further prevent collapse of the second cavity body  20  due to a force so as to provide a better using experience for the user. 
     Here, the materials used in the respective cavities may be environmentally friendly materials, such as  6 P environmentally friendly materials (matrials containing no Dis-2-ethylhexyl phthalate (DEHP), Benzyl butyl phthalate (BBP), Benzyl butyl phthalate (BBP), Benzyl butyl phthalate (BBP), Di iso decyl phthalate(DIDP), or Di iso decyl phthalate(DIDP)), which are environmentally friendly and non-toxic. 
     In the present disclosure, the inflatable mattress further comprises a double-covered air valve  40 . The double-covered air valve  40  is disposed on the side surrounding wall  13 . A different cover of the double-covered air valve  40  may be selected to be opened depending on a different operation of deflation or inflation, so that the gas in the air cavities is not prone to leak out during inflation, and the gas in the air cavities is discharged at a faster speed during deflation than during inflation to shorten the deflation time; and it is unnecessary to separately provide an additional deflation valve so that the cost is saved. 
     Optionally, the double-covered air valve  40  comprises two sealing covers, wherein a smaller sealing cover may cover a larger sealing cover, and the larger sealing cover may cover an opening of the side surrounding wall  13  and serves as a passage for inflation and deflation. When the larger sealing cover does not block the opening, the gas can be discharged from the air cavities. The deflation speed is fast because the opening is completely exposed, and the multiple air cavities communicate with one another so that all the gas from the inflatable mattress can be discharged, which facilitates a convenient and quick storage. When the larger sealing cover blocks the opening and the smaller sealing cover does not block the larger sealing cover, the air cavities can be inflated. The larger sealing cover is provided with an air hole and with a one-way valve plate, so that the gas can only be filled into the air cavities from the outside of the inflatable mattress, while the gas in the air cavities cannot be automatically discharged. After the inflation is finished, the one-way valve plate and the air hole of the larger sealing cover are blocked by the smaller sealing cover, which can further improve the air tightness and prevent air leakage from the inflatable mattress. The double-covered air valve  40  may be selected with reference to the two-stage double-covered air intake fittings in the general technology, and will not be described in detail here. 
     Optionally, the inflatable mattress further comprises a built-in DC electric inflating pump  50  configured to inflate the inflatable mattress, wherein the built-in DC electric inflating pump  50  is disposed on the side surrounding wall  13 , and an air outlet of the built-in DC electric inflating pump  50  communicates with the first air cavity  15 . Due to the arrangement of the built-in DC electric inflating pump  50 , it is unnecessary to separately provide an external inflating pump when the inflatable mattress needs to be inflated, so that it is more convenient to carry and use the inflatable mattress when going out, and its use is avoided from being affected in case that the inflating pump is forgotten to be carried. 
     It can be understood that when the built-in DC electric inflating pump  50  is damaged, an external inflating pump may also be used to inflate the air cavity of the inflatable mattress via the double-covered air valve  40 . 
     Optionally, in the present disclosure, the top wall  11  is used as the lying part  14 , both the lying part  14  and the bottom wall  12  are provided with supporting straps (or strips or bands), the supporting straps on the lying part  14  are equal in number and are in one-to-one correspondence with the supporting straps on the bottom wall  12 , and the supporting straps on the lying part  14  and the supporting straps on the bottom wall  12  are connected by a limiting pull strap(s) (not shown). In the present disclosure, the supporting straps are honeycomb-structured circular supporting straps  61 . Apparently, referring to  FIG. 6 , the supporting straps may also be closed loop-shaped supporting straps  62 , or referring to  FIG. 7 , the supporting strap may be straight-strip supporting straps  63 ; or referring to  FIG. 8 , the supporting straps may be vertical-strip supporting straps  64 ; or referring to  FIG. 9 , the supporting straps may be closed wavy supporting straps  65 . In addition, the closed wavy supporting straps  65  may be replaced with single-strip wavy supporting straps so as to provide users with more choices. It should be noted that the shape and number of the supporting straps are selected as required, and are not to be completely listed in the present disclosure. With the arrangement of the supporting straps, when the inflatable mattress is placed and used in a relatively smooth place, the supporting straps can provide a better adhesion capability for the inflatable mattress, so that the inflatable mattress is kept in place and is prevented from shifting laterally or even rolling over during use so as to ensure the using experience. Moreover, the user is in contact with the supporting straps disposed on the lying part  14 , and there is a large friction between the user and the lying part  14 , so that the user is not prone to slide on the inflatable mattress, and the user experience is improved. 
     Optionally, each limiting pull strap is a pull strap with no elasticity or weak elasticity, which can avoid the top wall  11  and the bottom wall  12  from being spaced too far away from each other in the height direction of the inflatable mattress (in the thickness direction of the inflatable mattress) after inflation. In addition, each two corresponding supporting straps located on the top wall  11  and the bottom wall  12  may be connected by a cylindrical limiting pull strap, or may be connected by a strip-shaped limiting pull strap. A single or multiple strip-shaped limiting pull strap(s) may be provided, and optionally, multiple limiting pull straps are provided, and each two corresponding supporting straps are connected by one limiting pull strap. 
     It should be noted that, in the present embodiment, the number of the limiting pull straps is two, and the two ends of each limiting pull strap are connected with the corresponding supporting straps on the top wall  11  and the bottom wall  12 , respectively. After the inflatable mattress is inflated, the two limiting pull straps are in a state of being substantially in parallel to each other, and of course, the two limiting pull straps may also be designed in a crossed arrangement. The connection method may be flexibly selected during production to facilitate the production and reduce unnecessary costs. The limiting pull straps are provided such that after the inflatable mattress is inflated, the overall shape of the first cavity body  10  can be maintained in a flat state of a common mattress, which allows the user to lie down thereon easily. 
     As shown in  FIG. 2 , optionally, in the present disclosure, the inflatable mattress further comprises a fourth cavity body  70 . The fourth cavity body  70  is disposed at a junction between the bottom wall  12  and the side surrounding wall  13  and the fourth cavity body together with the outer wall surface of the bottom wall  12  and the outer wall surface of the side surrounding wall  13  form a fourth air cavity  71 . The fourth cavity body  70  is provided such that after the fourth air cavity  71  is inflated, a support structure can be formed in the circumferential direction of the bottom wall  12  to further strengthen the support strength of the edge portion of the inflatable mattress, which is conducive to preventing collapse of the edge portion of the inflatable mattress. 
     The second cavity body  20  and the third cavity body  30  adjacent to each other are used as a support group, and the second cavity body  20  and the third cavity body  30  of each support group are distributed in a shape of two concentric rectangles. The second cavity body  20  and the third cavity body  30  distributed in the shape of two concentric rectangles can ensure more comprehensive support at the circumferential edge of the first cavity body  10  to reduce the area having weak support. Moreover, the gas in the air cavities is enabled to be distributed more uniformly, which is conducive to prevention of excessive collapse of the edge position. 
     The inflatable mattress according to the present disclosure is based on the following principle: 
     The smaller sealing cover of the double-covered air valve  40  is opened, and the inflatable mattress is inflated by the built-in DC electric inflating pump  50 . Due to the presence of the limiting pull straps, when the interior of the inflatable mattress is filled with gas, the outer shape of the first cavity body  10  is controlled and a uniform supporting effect can be maintained in combination with the function of the supporting straps, such that the user&#39;s weight can be as distributed uniformly as possible to reduce the deformation. 
     When the user&#39;s torso is lying at the edge position of the entire inflatable mattress, the second cavity body  20  serves as a support for the torso. Since the third cavity body  30  is unlikely to be brought into direct contact with the user and is not easily deformed by compression, the third cavity body  30  may serve as a reinforcing rib to prevent a large deformation of the second cavity body  20  when being compressed, and also to make a certain contribution to maintaining the support strength of the lying part  14 . When the torso moves away from the compressed position (e.g., turning over), the compressed second cavity body  20  can also be restored more quickly so that the air pressure in the air cavity remains distributed relatively uniformly because the third cavity body  30  has a pulling effect on the second cavity body  20 . The supportability of the edge position can be effectively improved, so that no position is collapsed to a large degree when the user is lying on the inflatable mattress and the user will feel more comfortable. 
     In addition, since the supporting straps provide auxiliary support and provide a certain adhesion capability, the cases of lateral shift or rollover of the entire inflatable mattress can be reduced, and the inflatable mattress is comfortable and safe in use and provides a better using experience. It is found by actual tests that the inflatable mattress according to the present disclosure can bear a weight of 600 kg, and shows a particularly significant improvement in supporting capability as compared with common inflatable mattresses. Since the inflatable mattress has a simple structure which is manufactured more conveniently, the process requirements are advantageously reduced, whereby the cost required for production can also be reduced to a certain extent, which is also beneficial to the production. 
     Referring to  FIG. 4  and  FIG. 5 , the present disclosure provides an inflatable mattress. The inflatable mattress is different from the inflatable mattress described above in that: 
     each of the top wall  11  and the bottom wall  12  serves as the lying part  14 , the lying part  14  is provided with supporting straps, and the respective supporting straps of the two lying parts  14  are provided at corresponding positions and are connected by limiting pull straps. 
     The second cavity body  20  and the third cavity body  30  adjacent to each other are used as a support group, and the first cavity body  10  is symmetrically provided with two support groups on the two opposite sides in the height direction of the inflatable mattress. 
     The rest structures and functions may be understood with reference to the inflatable mattress mentioned above. 
     With the arrangement of the supporting straps, when the inflatable mattress is placed and used in a relatively smooth place, the supporting straps can provide a better adhesion capability for the inflatable mattress, so that the inflatable mattress is kept in place and is prevented from shifting laterally or even rolling over during use so as to ensure the using experience. Moreover, both the top wall  11  and the bottom wall  12  are designed as the lying parts  14 , such that the inflatable mattress can be used more conveniently, and the inconvenience of distinguishing the front and back sides is eliminated. Since there are two symmetrical support groups, the inflatable mattress has better support performance and misalignment of the two support groups is unlikely to occur when a force is applied in a vertical direction. 
     It should be noted that the front and back surfaces described hereinabove mean that one side on which the user is lying, of the two sides in the height direction of the inflatable mattress, is used as a front side, and the other side opposite to the front side is a back side. 
     The inflatable mattress according to the present disclosure can provide good support for the user to avoid the problem of uncomfortable use caused by excessive deformation of the inflatable mattress, and good support can be provided even at the edge positions of the inflatable mattress, and therefore a good using experience is provided. 
     Referring to  FIG. 10 , the present disclosure also provides an inflatable mattress, comprising a top wall  11 , a bottom wall  12 , an inner enclosure  80 , an outer enclosure  90 , and at least one barrier wall  001 , wherein the top wall  11  and the bottom wall  12  are arranged at an interval along the thickness direction of the inflatable mattress, the inner enclosure  80  extends along the circumferential direction of the top wall  11  or the bottom wall  12  and is connected with both of the top wall  11  and the bottom wall  12 , and a main cavity  002  is defined by the inner enclosure  80 , the top wall  11 , together with the bottom wall  12 ; the outer enclosure  90  is on the outer side of the inner enclosure  80  and extends along the circumferential direction of the inner enclosure  80 , the outer enclosure  90  is connected with the top wall  11  or/and the inner enclosure  80  on one side thereof in the thickness direction of the inflatable mattress and is connected with the bottom wall  12  or/and the inner enclosure  80  on the other side thereof, and an annular cavity  003  is defined by the outer enclosure  90  together with the inner enclosure  80 ; the at least one barrier wall  001  is each disposed in the annular cavity  003 , and each barrier wall  001  extends along the circumferential direction of the inner enclosure  80  and is connected with both of the inner enclosure  80  and the outer enclosure  90 , so that the annular cavity  003  is divided into a plurality of sub-cavities  301  arranged sequentially in the thickness direction of the inflatable mattress, wherein adjacent sub-cavities  301  share one barrier wall  001 . 
     In the present disclosure, a plurality of sub-cavities  301  are disposed around the periphery of the inflatable mattress, such that the strength of the periphery of the inflatable mattress can be enhanced, that is to say, the strength of the peripheral edges of the inflatable mattress can be enhanced as well, whereby the periphery of the inflatable mattress are not prone to a serious collapse thus a good user experience is provided during use of the inflatable mattress. Moreover, at least one barrier wall  001  is disposed between the inner enclosure  80  and the outer enclosure  90 , and the at least one barrier wall  001  applies a pulling force to the inner enclosure  80  and the outer enclosure  90  to further improve the stability of the inflatable mattress. 
     Optionally, all of the plurality of sub-cavities  301  communicate with the main cavity  002 . In other words, the communicated plurality of sub-cavities  301  and the main cavity  002  form one cavity. When the inflatable mattress is compressed, air inside the inflatable mattress can adaptively flow simultaneously in the sub-cavities  301  and the main cavity  002 , so that the inflatable mattress is not prone to significant protrusion and depression and is more comfortable during use. 
     Optionally, at least one through hole  81  is provided in the inner enclosure  80  so that at least one of the plurality of sub-cavities  301  communicates with the main cavity  002 . It should be noted that the number of the at least one through holes  81  is set as required. In the present disclosure, each sub-cavity  301  communicates with the main cavity  002  via a corresponding through hole  81  so that one cavity as a whole is formed inside the inflatable mattress to improve the comfort in use. 
     It should be noted that the number of the at least one barrier wall  001  is set as required. Optionally, the barrier walls  001  are plural in number. The plurality of barrier walls  001  each have an annular structure. The plurality of barrier walls  001  are arranged at intervals along the thickness direction of the inflatable mattress to divide the annular cavity  003  into (N+1) sub-cavities  301 , where N is the number of the barrier walls  001  and is a positive integer. In the present disclosure, optionally, the number of the barrier walls  001  is two, and the two barrier walls  001  divide the annular cavity  003  into three sub-cavities  301 . 
     Referring to  FIG. 11  and  FIG. 12 , the present disclosure also provides an inflatable mattress  100 . The inflatable mattress  100  comprises two supporting walls  110 , a surrounding wall  120 , and a first partitioning wall  130 ; wherein the two supporting walls  110  are arranged at an interval along the thickness direction of the inflatable mattress  100 , where the thickness of the inflatable mattress  100  refers the height in the thickness direction after the inflatable mattress  100  is inflated; the surrounding wall  120  is connected with both two supporting walls  110  and extends along the circumferential direction of the supporting walls  110 , and a main air storage cavity  140  is defined by the surrounding wall  120  together with the two supporting walls  110 ; the first partitioning wall  130  is located in the main air storage cavity  140 , the first partitioning wall  130  is connected with both the surrounding wall  120  and one of the two supporting walls  110  or is connected with both of the two supporting walls  110 , the first partitioning wall  130  extends along the circumferential direction of the surrounding wall  120 , and the first partitioning wall  130  divides the main air storage cavity  140  into a first sub-cavity  141  and a second sub-cavity  142 ; the first partitioning wall  130  has at least one first fracture portion  134  in its extension direction, and the first sub-cavity  141  and the second sub-cavity  142  communicate with each other through the at least one first fracture portion  134 . 
     The inflatable mattress  100  according to the present disclosure comprises a main air storage cavity  140 . A partitioning wall is disposed in the main air storage cavity  140 . The partitioning wall has at least one fracture portion. The partitioning wall divides the main air storage cavity  140  into a first sub-cavity  141  and a second sub-cavity  142  communicating with each other through the fracture portion. Since the partitioning wall has two ends disjoined at the fracture portion, a gap is naturally formed to communicate the first sub-cavity  141  with the second sub-cavity  142 , it is unnecessary to separately provide a through hole in the partitioning wall, thus the processing technology is simplified, and the processing efficiency is improved. Moreover, with the arrangement of the partitioning wall, the partitioning wall can provide a pulling force to pull and hold the supporting walls  110  and the surrounding wall  120 , whereby the stability of the inflatable mattress  100  is increased, whereby the inflatable mattress  100  does not tend to collapse at its edge and provides more comfort when the inflatable mattress  100  is in use. In addition, no through hole is provided in the partitioning wall, thus the overall structure of the partitioning wall is not damaged, the strength of the partitioning wall is improved, the partitioning wall is not easily damaged when it provides the pulling force, and therefore the service life of the partitioning wall is prolonged. When the inflatable mattress  100  bears a weight, the air inside the main air storage cavity  140  flows under pressure, so that the inflatable mattress  100  is unlikely to be significantly depressed or protruded, thus the user experience is improved. The first sub-cavity  141  and the second sub-cavity  142  communicate with each other. During inflation, the inflation can be performed only by connecting the first sub-cavity  141  or the second sub-cavity  142  with an inflation device, thus the operation is convenient and fast. 
     In the present disclosure, for sake of convenience of description, the two supporting walls  110  are a top wall  111  and a bottom wall  112 , respectively. When in use, the bottom wall  112  is configured to be placed on a carrier which may be a bed frame or the ground or the like. 
     In the present disclosure, optionally, the first partitioning wall  130  is fixedly connected with both of the top wall  111  and the surrounding wall  120 . A second sub-cavity  142  is formed on the outer side of the first partitioning wall  130 . In other words, the second sub-cavity  142  is located on the outer side of the first sub-cavity  141 . The second sub-cavity  142  is disposed around the periphery of the first sub-cavity  141  along the circumferential direction of the surrounding wall  120 , that is to say, the second sub-cavity  142  is located at the peripheral edges of the inflatable mattress  100 . When the inflatable mattress  100  is in use, the peripheral edges of the inflatable mattress  100  are not prone to collapse, thus a good user experience is provided. 
     It should be understood that the top wall  111  and the surrounding wall  120  are connected with each other, an angle is formed at the connection between the top wall  111  and the surrounding wall  120 , and the first partitioning wall  130  is connected with both of the top wall  111  and the surrounding wall  120 , so that a second sub-cavity  142  having a substantially triangular cross-sectional shape is formed by the first partitioning wall  130 , the top wall  111 , together with the surrounding wall  120 . Portions of the first partitioning wall  130 , the top wall  111 , and the surrounding wall  120  that form the second sub-cavity  142  have high overall structural strength and good firmness, therefore the inflatable mattress  100  does not tend to collapse when in use. Here, the cross section of the second sub-cavity  142  refers to a plane perpendicular to an extension direction of the second sub-cavity  142 . 
     In the present disclosure, optionally, the top wall  111  and the bottom wall  112  are identical in shape and size, and the top wall  111  and the bottom wall  112  are both provided as rectangular walls. Apparently, in other embodiments, the top wall  111  and the bottom wall  112  may be provided to have different shapes and sizes. For example, the top wall  111  and the bottom wall  112  are both rectangular walls, but the size of the bottom wall  112  is larger than the size of the top wall  111 , so that a structure with a smaller top and a larger bottom is formed by the top wall  111 , the bottom wall  112 , and the surrounding wall  120 , whereby the inflatable mattress  100  has better stability. In addition, the top wall  111  and the bottom wall  112  may also be circular walls, triangular walls, elliptic walls, or the like, which are not to be completely listed in the present disclosure. 
     Correspondingly, the surrounding wall  120  has a rectangular cross-sectional shape. The cross section of the surrounding wall  120  refers to a plane perpendicular to the thickness direction of the inflatable mattress  100 . The surrounding wall  120  is arranged in the circumferential direction of the top wall  111  and the bottom wall  112 . The two sides of the surrounding wall  120  are connected with the top wall  111  and the bottom wall  112 , respectively, so that a closed main air storage cavity  140  having a substantially rectangular parallelepiped shape is formed by the surrounding wall  120 , the top wall  111 , together with the bottom wall  112 . 
     Referring to  FIG. 13 , in the present disclosure, the first partitioning wall  130  may be a first partitioning strap  131 . The first partitioning strap  131  has two first side edges  132  in its extension direction, the first partitioning strap  131  has two second side edges  133  in a direction perpendicular to its extension direction, wherein the first partitioning strap  131  extends along the circumferential direction of the surrounding wall  120 , the two second side edges  133  of the first partitioning strap  131  are fixedly connected with the inner side of the top wall  111  and the inner side of the surrounding wall  120 , respectively, and a gap is provided between two first side edges  132  to form a first fracture portion  134 , and the first sub-cavity  141  and the second sub-cavity  142  communicate with each other through the first fracture portion  134 . During the processing of the prior inflatable mattress  100 , the partition that partitions the top wall  111  and the surrounding wall  120  has an endless (or annular) structure, so that two independent cavities are formed in the inflatable mattress  100 . Through holes are separately provided in the partition in order to ensure communication between the two cavities, thus the process steps for manufacturing the inflatable mattress  100  are increased and the working efficiency is reduced. Moreover, the integrity of the partition is destroyed and the service life of the partition is shortened because of the arrangement of the through holes in the partition. In the present disclosure, a passage communicating the first sub-cavity  141  with the second sub-cavity  142  is naturally formed at the two ends of the first partitioning strap  131 , it is unnecessary to provide a through hole in the first partitioning strap  131 , and there is no need to process and form the first partitioning strap  131  into an endless structure, so that the processing difficulty is reduced, and the efficiency is improved. 
     Referring to  FIG. 11  and  FIG. 15 , in the present disclosure, optionally, the first partitioning straps  131  are plural in number, and the plurality of first partitioning straps  131  are arranged at intervals in the circumferential direction of the surrounding wall  120 . In other words, the first partitioning wall  130  comprises a plurality of first partitioning straps  131  which are arranged at intervals in the circumferential direction of the surrounding wall  120 . Apparently, the number of the first partitioning straps  131  may be set as required. For example, four first partitioning straps  131  are described as an example. The four first partitioning straps  131  are arranged at intervals in the circumferential direction of the surrounding wall  120 . In the circumferential direction of the surrounding wall  120 , there is a gap between each two adjacent first partitioning straps  131 . That is to say, in the circumferential direction of the surrounding wall  120 , there is a gap between each two adjacent first side edges  132  on the two respective adjacent first partitioning straps  131 , forming a corresponding first fracture portion  134 . In other words, four first fracture portions  134  are formed by the four first partitioning straps  131 , and the first sub-cavity  141  and the second sub-cavity  142  communicate with each other through the four fracture portions. 
     Optionally, the four first partitioning straps  131  are in one-to-one correspondence with the four side surfaces of the surrounding wall  120 . In other words, in the circumferential direction of the surrounding wall  120 , a gap between each two adjacent first partitioning straps  131  is formed at a respective bent portion  121  of the surrounding wall  120 . Since the surrounding wall  120  has a rectangular cross section, the surrounding wall  120  has four bent portions  121 , wherein positions of the four first fracture portions  134  are corresponding to those of the four bent portions  121 , respectively. In the present disclosure, each first fracture portion  134  is corresponding to the respective bent portion  121  of the surrounding wall  120 , that is to say, the first partitioning wall  130  is in a fractured state at the bent portions  121 , thus stress concentration is reduced, and the first partitioning wall  130  is not easily damaged thus has a long service life. 
     Referring to  FIG. 14  to  FIG. 16 , in the present disclosure, optionally, the inflatable mattress  100  further comprises a second partitioning wall  150 . The second partitioning wall  150  is connected with both of the bottom wall  112  and the surrounding wall  120  to divide the first sub-cavity  141  into a third sub-cavity  143  and a fourth sub-cavity  144 . The fourth sub-cavity  144  is on the outer side of the third sub-cavity  143  and is arranged around the periphery of the third sub-cavity  143 , and the fourth sub-cavity  144  has a substantially triangular cross-sectional shape. The cross section of the fourth sub-cavity  144  refers to a plane perpendicular to the extension direction of the fourth air cavity. The second partitioning wall  150  has at least one second fracture portion  152  in its extension direction, and the third sub-cavity  143  and the fourth sub-cavity  144  communicate with each other through the at least one second fracture portion  152 . 
     Optionally, the structure of the second partitioning wall  150  may be designed to be the same as the structure of the first partitioning wall  130 . For example, the second partitioning wall  150  may comprise one second partitioning strap  151 . The second partitioning strap  151  extends in the circumferential direction of the surrounding wall  120 , the two opposite side edges of the second partitioning strap  151  are connected with both of the bottom wall  112  and the surrounding wall  120 , and there is a gap between two ends of the second partitioning strap  151  in its extension direction to form a second fracture portion  152 . 
     Referring to  FIG. 15 , optionally, the second partitioning wall  150  may comprise a plurality of second partitioning straps  151  arranged at intervals in the circumferential direction of the surrounding wall  120 . Each second partitioning strap  151  extends in the circumferential direction of the surrounding wall  120 , wherein the two opposite side edges of each second partitioning strap  151  are connected with both of the bottom wall  112  and the surrounding wall  120 , and there is a gap between two adjacent ends in the extension directions of two second partitioning straps  151  which are adjacent in the circumferential direction of the surrounding wall  120 , forming a respective second fracture portion  152 . For example, the number of the second partitioning straps  151  is four, thus four second fracture portions  152  are formed by the four second partitioning straps  151  respectively, wherein the four second fracture portions  152  are in one-to-one correspondence with the four bent portions  121  of the surrounding wall  120 . 
     The inflatable mattress  100  according to the present disclosure comprises a top wall  111 , a bottom wall  112 , a surrounding wall  120 , a first partitioning wall  130 , and a second partitioning wall  150 , wherein the top wall  111  and the bottom wall  112  face each other in the thickness direction of the inflatable mattress  100 , and the two sides of the surrounding wall  120  are connected with the peripheries of the top wall  111  and the bottom wall  112 , respectively, so that a closed main air storage cavity  140  is formed. An inflation inlet is provided in the top wall  111 , the bottom wall  112 , or the surrounding wall  120 . An air valve is disposed at the inflation inlet. The air valve may be opened to inflate the main air storage cavity  140 , and the air valve may be closed after the inflation is completed. The first partitioning wall  130  and the second partitioning wall  150  are spaced apart from each other in the thickness direction of the inflatable mattress  100 . The first partitioning wall  130  is connected with both of the top wall  111  and the surrounding wall  120  to form a first sub-cavity  141  and a second sub-cavity  142 ; and the second partitioning wall  150  is connected with both of the bottom wall  112  and the surrounding wall  120  to form a third sub-cavity  143  and a fourth sub-cavity  144 . The first partitioning wall  130  comprises four first partitioning straps  131 , wherein the four first partitioning straps  131  are arranged at intervals in the circumferential direction of the surrounding wall  12 , each of the first partitioning straps  131  is connected with both of the top wall  111  and the surrounding wall  120 , and a gap is provided between each two adjacent first partitioning straps  131  in the circumferential direction of the surrounding wall  120 , with the gap being at the respective bent portion  121  of the surrounding wall  120 , thus forming a respective first fracture portion  134 , and the second sub-cavity  142  and the third sub-cavity  143  communicate with each other through the first fracture portions  134 . The second partitioning wall  150  comprises four second partitioning straps  151 , wherein the four second partitioning straps  151  are arranged at intervals in the circumferential direction of the surrounding wall  120 , each of the second partitioning straps  151  is connected with both of the bottom wall  112  and the surrounding wall  120 , a gap is provided between each two adjacent second partitioning straps  151  in the circumferential direction of the surrounding wall  120 , with the gap being at the bent portion  121  of the surrounding wall  120 , thus forming a respective second fracture portion  152 , and the fourth sub-cavity  144  and the third sub-cavity  143  communicate with each other through the second fracture portions  152 . That is to say, the second sub-cavity  142 , the third sub-cavity  143 , and the fourth sub-cavity  144  communicate with one another. 
     In the present disclosure, it should be noted that all the fixed connections between the top wall  111  and the surrounding wall  120 , between the bottom wall  112  and the surrounding wall  120 , between the first partitioning strap  131  and the top wall  111 , between the first partitioning straps  131  and the surrounding wall  120 , between the second partitioning straps  151  and the bottom wall  112 , and between the second partitioning straps  151  and the surrounding wall  120  may be implemented by fusion welding. 
     In the present disclosure, optionally, the inflatable mattress  100  further comprises a pull strap  160 , wherein the pull strap  160  is located in the third sub-cavity  143 , one end of the pull strap  160  is fixedly connected with the top wall  111 , and the other end of the pull strap  160  is fixedly connected with the bottom wall  112 . Optionally, both the fixed connections between the pull strap  160  and the top wall  111  and between the pull strap  160  and the bottom wall  112  may be implemented by fusion welding. The pull strap  160  is provided such that the stability of the inflatable mattress  100  can be improved, thereby avoiding a situation in which the inflatable mattress  100  is excessively deformed and thus severely collapsed to affect the user experience. 
     Optionally, a plurality of the pull straps  160  are provided, wherein the plurality of pull straps  160  are distributed in the third sub-cavity  143  in a rectangular array. 
     The present disclosure also provides an inflatable bed (or airbed, which is not shown), which comprises the inflatable mattress  100  described above. The inflatable bed is processed and manufactured with simple processes, by which the processing difficulty is reduced, and the processing efficiency is improved. 
     The various types of supporting straps in the above embodiments are each equipped with an appropriate number of limiting pull straps, so that a good effect can be achieved when being used as a whole, and the users can be provided with different choices to improve the user experience. 
     In summary, in the inflatable mattress of the present disclosure, good support is provided at the edge positions of the first cavity body  10  by the second cavity body  20  and the third cavity body  30 , and the third cavity body  30  having a height lower than that of the second cavity body  20  is less deformed and thus can apply a certain pulling force to the second cavity body  20 , whereby the support strength at the edge positions is further enhanced, so that the entire inflatable mattress has a better weight-bearing capability with less collapse deformation, and is more comfortable for a user lying thereon. 
     In the embodiments of the present disclosure, for example, the inflatable mattress is inflated, when a user is lying on the inflatable mattress, the first cavity body provides the majority of support for the user, and when the user&#39;s body presses against an edge portion of the inflatable mattress, the user is supported by the second cavity body. The third cavity body having a height smaller than that of the second cavity body is unlikely to be directly pressed down and can provide additionl support at the edge position to prevent excessive collapse of the edge position. Moreover, since the third cavity body is connected with both of the second cavity body and the lying part, the third cavity body has a certain pulling effect on the second cavity body to further prevent collapse of the second cavity body due to a force applied thereto and to provide a better using experience for the user. 
     The above description is merely illustrative of preferred embodiments of the present disclosure and is not intended to limit the present disclosure. It will be understood by those skilled in the art that various modifications and variations can be made to the present disclosure. Any modifications, equivalent alternatives, improvements and so on made within the spirit and principle of the present disclosure are to be included in the scope of protection of the present disclosure. 
     INDUSTRIAL APPLICABILITY 
     In summary, the present disclosure provides an inflatable mattress, which has a stable and reliable structure and offers a good user experience.