WO2021026719A1 - Inflatable bed having stable position during use - Google Patents

Abstract

An inflatable bed having a stable position during use, the bed comprising an upper piece (1) and a lower piece (2) disposed spaced apart, and an enclosing band (3) enclosing and fixed at an outer peripheral side between the upper piece (1) and the lower piece (2). The upper piece (1), the lower piece (2), and the enclosing band (3) form a closed air chamber (4). The lower piece (2) comprises an elastic polymer layer (21). The enclosing band (3) comprises a high-strength support fabric layer (32). The lower piece (2) has greater elasticity than the enclosing band (3), and the enclosing band (3) has greater rigidity than the lower piece (2). A shaping pulling band (5) is connected between the elastic polymer layer (21) and an inner layer of the enclosing band (3) adjacent thereto, and the shaping pulling band (5) is disposed along a peripheral side of the lower piece (2). An inward suction cavity (6) recessed toward the air chamber (4) is formed on a surface of the lower piece (2) under the action of a pulling force of the shaping pulling band (5). The invention enables cooperative shaping of the elastic lower piece (2), the rigid enclosing band (3), and the inward suction cavity (6), thereby improving positional stability of the inflatable bed during use.

Description

An inflatable bed with stable use position Technical field

The invention relates to the technical field of inflatable beds, and more specifically, it relates to an inflatable bed with stable use position.

Background technique

In the Chinese Patent Publication No. CN107224139A, an air mattress is disclosed, comprising: an upper structure, an inflatable middle layer, and a bottom structure; the upper structure includes a basic cloth layer and a cover layer, and the basic cloth layer is composed of most cloth fibers. It is woven, the number of warp and weft fibers per square inch is higher than 100, the covering layer and the base cloth layer are bonded by viscose, and the weight of viscose per square yard is higher than 20 grams and less than 80 grams, The basic fabric layer faces the direction of the covering layer, and is pressed and embedded into the covering layer to form a cloth surface bonding material; the first surface of the inflatable middle layer is fixed to the upper structure, and the inflatable middle layer It includes at least one air cavity, which expands into a predetermined shape when inflated, and the outer side of the inflatable middle layer contains the cloth surface adhesive; wherein the second surface of the inflatable middle layer is fixed to the underlying structure, and The bottom structure includes the cloth surface bonding material.

In the prior art, the inflatable bed is similar to the above-mentioned inflatable bed, which is enclosed and arranged by the cloth surface of the upper structure and the bottom structure of the inflatable middle layer. After inflating into the air cavity, the air mattress is formed for the human body to lie down. The cloth surface bonding material matched with the upper structure supports the human body. In daily life, the above-mentioned inflatable beds are generally placed on a horizontal surface during use, and the user sits or lies on the upper surface of the inflatable bed, and uses the upper surface of the inflatable bed as the use surface for the use action.

The above-mentioned prior art solutions have the following drawbacks: the inflatable bed is mainly inflated and formed by flexible cloth for supporting effect, and its own weight is relatively light. Although the inflatable bed has a stable supporting effect on the human body, the stability of the position of the inflatable bed on the placement surface is worse than that of the ordinary bed due to its own light weight, and its position stability may be due to the bed surface during use. The upper human body’s sleeping posture changes and even rollover occurs, that is, the stability of the placement surface of the air bed is limited during the use of the air bed, which affects the use effect of the air bed.

Summary of the invention

In view of the existing technical problems, the purpose of the present invention is to provide an inflatable bed with a stable use position, which has the advantages of improving the stability of the inflatable bed in its position when in use and ensuring the use effect of the inflatable bed.

In order to achieve the above objective, the present invention provides the following technical solutions:

An inflatable bed with a stable use position, comprising an upper piece and a lower piece arranged at intervals, and a shroud located between the upper piece and the lower piece, which is enclosed and fixed on the outer peripheral side, and the upper piece, the lower piece and the shroud form a closed The lower sheet includes an elastic polymer layer and a woven fabric layer located on the side of the elastic polymer layer away from the air chamber. The shroud includes a polymer airtight layer and a polymer airtight layer away from the A fixed strength support cloth layer on one side of the air chamber, the elasticity of the lower sheet is greater than that of the shroud, and the rigidity of the shroud is greater than that of the lower sheet; the elastic polymer layer and its adjacent polymer airtight layer There is a forming drawstring connected between, and the forming drawstring is arranged along the peripheral side of the lower sheet, and the surface of the lower sheet forms an internal suction chamber recessed toward the air chamber under the pulling force of the forming drawstring.

By adopting the above technical solution, when using an inflatable bed, the air chamber is inflated to expand the air chamber. After the inflatable bed is formed, the lower piece is attached to the placement surface, and the user is positioned on the surface of the upper piece for use, and the upper piece receives the force generated by the use action. Such as the pressure of the human body's weight produces a downward depression due to deformation. Since the lower sheet is composed of an elastic polymer layer and a woven fabric layer, the woven fabric layer is used to ensure that the lower sheet has basic structural strength, and the elastic polymer has good elasticity so that the lower sheet is compressed by the gas in the air chamber due to the deformation of the upper sheet. Large elastic deformation is generated synchronously by air pressure, that is, the inner suction chamber deforms downward toward the concave outer bottom surface of the air chamber. At this time, the air between the inner suction chamber and the placement surface is gradually discharged outward. At the same time, because the shroud is composed of a polymer airtight layer and a strength support fabric layer, the strength support fabric layer has good rigidity and resistance to deformation. The tight bottom surface of the shroud near the lower sheet and located on the outer periphery of the inner suction chamber fits the placement Facing the air bed body, it plays a stable supporting role. The shroud with high support strength is located on the outer periphery of the lower piece and closely fits the placement surface, and the air in the inner suction chamber is discharged due to the elastic deformation of the lower piece. At this time, the air pressure inside the lower piece is lower than the atmospheric pressure outside the lower piece. , So that the lower piece forms an equivalent large suction cup structure as a whole, which has a positioning effect on the inflatable bed on the placement surface. Through the coordinated arrangement of the elastic lower piece and the rigid shroud, combined with the molding of the inner suction chamber, the pressure generated by the air pressure difference in the natural environment is used to achieve the positioning effect of the inflatable bed on the placement surface, thereby improving the inflatable bed The stability of its placement position during use prevents the position of the inflatable bed from shifting or even turning over due to changes in the user's use action or other external forces from the bed surface during use, ensuring the stability of the inflatable bed Effect.

The present invention is further provided that: the outer bottom surface of the suction chamber adjacent to the air chamber is further provided with an indented portion facing the air chamber.

By adopting the above technical solution, when using an inflatable bed, the user usually firstly locates the surface of the inflatable bed close to the inside to perform the use action. For example, when using the air bed, the human body first sits and lies on the bed near the middle part, so that the upper sheet is close to the middle part The position is first deformed by the force generated by the use action, that is, the indented part located in the middle of the bottom surface of the inner suction chamber first touches the placement surface under the action of air pressure. The recessed portion and the placement surface are mutually squeezed to discharge the air in the space created by the height difference between the recessed portion and the internal suction chamber, and the recessed portion and the placement surface closely conflict. Part of the surface of the lower piece forms an equivalent small suction cup structure under the action of the atmospheric pressure caused by the difference in internal and external air pressure. The large suction cup structure formed as a whole in conjunction with the internal suction chamber together has a dual positioning effect on the air bed on the placement surface. When the inflatable bed is used, the suction force generated by the inner suction chamber on the placement surface and the stability of the position of the lower piece on the placement surface are improved.

The present invention is further provided that: the indented portion is located on the outer bottom surface of the inner suction chamber and in the middle of the inner suction chamber.

By adopting the above technical solution, the exhaust volume of the air in the inner suction chamber when the lower sheet is deformed is increased, and the number of small suction cup structures is increased, thereby further improving the positioning effect of the inner suction chamber on the inflatable bed.

The present invention is further configured to connect and fix the inner drawstring between the elastic polymer layer and the inner layer of the upper sheet adjacent to the air chamber, and the connection between the inner drawstring and the elastic polymer layer is the inner side of the indented portion .

By adopting the above technical solution, the inner drawstring on the inner side layer of the indented part adjacent to the air chamber is used to limit the shape of the indented part when the inflatable bed is inflated, so as to ensure that the indented part is in conflict with the inflatable bed placement surface The effect of squeezing and expelling air.

The present invention is further provided as follows: the inner drawstring is arranged around the inner peripheral side of the indented portion on the lower sheet.

By adopting the above technical solution, the limiting pulling force provided by the inner drawstring is evenly distributed on the peripheral side of the indented portion, which is beneficial to ensure that the inner drawstring has a positive effect on the overall shape of the indented portion in an environment with high air pressure in the air chamber. Maintenance and recovery.

The present invention is further configured as follows: the two adjacent indented portions are separated by a middle drawstring, and the two ends of the middle drawstring are respectively vertically fixed to the upper sheet and the lower sheet.

By adopting the above technical solution, the middle drawstring between two adjacent indented parts simultaneously provides a limiting pulling force to the two indented parts, so as to reduce the number of drawstrings. And the two ends of the middle drawstring are vertically connected to the upper piece and the lower piece, so that when the gas chamber is filled with gas, the middle drawstring is vertically arranged to ensure the stability of the limiting pulling force provided to the two adjacent indented parts.

The present invention is further configured as follows: the connecting end of the inner drawstring and the upper sheet is located on the side of the elastic polymer layer away from the middle drawstring, and the middle drawstring and the inner drawstring are both short in the bottom and long in the top. Trapezoidal setting.

By adopting the above technical solution, the inner drawstring is arranged obliquely toward the side away from the middle drawstring, so that the force generated by the indented portion and the inner drawstring on the upper sheet produces a component force in the horizontal direction, thereby reducing the surface of the upper sheet from being pulled inside. The deformation of the depression caused by the influence of the force; at the same time, the middle and inner pull belts are arranged in a trapezoid shape to increase the contact area between the pull belt and the upper plate, and further reduce the deformation effect of the pull belt on the upper plate. While ensuring the concave effect of the indentation part, the relative flatness of the surface of the upper sheet is ensured, and the upper sheet surface is prevented from being subjected to the force of the inner pulling belt to produce a large amount of sinking deformation and affecting the supporting effect of the upper sheet on the human body.

The present invention is further configured as follows: the inner drawstrings on both sides of the middle drawstring are arranged symmetrically with the center axis of the air chamber as the symmetry axis, so that the distance between the inner drawstrings on both sides of the symmetry and the middle drawstring and the upper piece and The connecting tilt angles of the lower pieces are the same.

By adopting the above technical solution, the inner drawstrings are symmetrically arranged on the center axis of the air chamber, so that the limiting pulling force generated by the two inner drawstrings on the upper or lower sheet is the same, ensuring the stability of the recessed part structure and the overall surface of the upper sheet Parallel to the horizontal plane to ensure the comfort of the human body lying on the upper surface.

The present invention is further provided that: the inner layer of the upper sheet adjacent to the shroud and the adjacent polymer airtight layer are connected with a shaped drawstring.

By adopting the above technical solution, the formation of a drawstring between the upper sheet and the shroud is used to ensure the flatness of the surface of the shroud after the air bed is inflated, and at the same time improve the support and maintenance effect of the shroud on the overall shape of the air bed.

Compared with the prior art, the beneficial effects of the present invention are:

(1) Through the molding and cooperation of the elastic lower piece, the rigid shroud and the inner suction chamber, the lower piece is adsorbed and fixed on the placement surface under the action of atmospheric pressure when the inflatable bed is used, thereby improving the use of the inflatable bed. Stability of the location and use effect;

(2) The inner drawstring and the middle drawstring ensure the structural shaping and stability of the inverted part, and further improve the adsorption and positioning effect between the inner suction chamber and the placement surface of the inflatable bed;

(3) The inclined and symmetrical arrangement of the trapezoidal inner pull belt ensures the indentation effect of the inverted part while reducing the deformation of the top sheet surface, ensuring the flatness of the top sheet surface and the comfort of use.

Description of the drawings

FIG. 1 is a schematic diagram of the structure of the highlighted bed surface in Example 1 of the present invention;

2 is a schematic diagram of the structure of the bottom of the highlighted bed in Example 1 of the present invention;

Figure 3 is a cross-sectional view of the long side of the bed surface of the embodiment 1 of the present invention;

4 is a cross-sectional view of the short side of the bed surface in Example 1 of the present invention;

FIG. 5 is a schematic diagram of the structure of the molded drawstring in Embodiment 1 of the present invention;

6 is a schematic diagram of the structure of the inner drawstring and the middle drawstring in the embodiment 1 of the present invention;

FIG. 7 is a schematic diagram of the structure of the highlighted bed surface in Embodiment 2 of the present invention;

Fig. 8 is a schematic diagram of the structure of the highlight bed bottom in embodiment 2 of the present invention;

Figure 9 is a cross-sectional view of the long side of the bed surface in Example 2 of the present invention;

10 is a schematic diagram of the structure of the inner drawstring and the middle drawstring in Embodiment 2 of the present invention;

11 is a schematic diagram of the structure of the prominent bed surface in Example 3 of the present invention;

12 is a schematic diagram of the structure of the bottom of the highlighted bed in Embodiment 3 of the present invention;

Figure 13 is a cross-sectional view of the long side of the bed surface of the third embodiment of the present invention;

14 is a schematic diagram of the structure of the inner drawstring and the middle drawstring in the third embodiment of the present invention.

Reference signs : 1. Upper sheet; 11. Polymer material layer; 12, Fabric layer; 2. Lower sheet; 21, Elastic polymer layer; 22, Woven fabric layer; 3. Shroud; 31, Polymer airtight Layer; 32. Strength support fabric layer; 4. Air chamber; 5. Formed draw tape; 6. Internal suction chamber; 61, indented part; 62, internal draw tape; 63, middle draw tape.

detailed description

The present invention discloses an inflatable bed with a stable use position, which includes an upper sheet 1 and a lower sheet 2 arranged at intervals, and a surrounding belt 3 located between the upper sheet 1 and the lower sheet 2 and fixed on the outer periphery. The sheet 1, the lower sheet 2 and the shroud 3 form a closed air chamber 4. The lower sheet 2 includes an elastic polymer layer 21 and a woven fabric layer 22 located adjacent to and fixed on the side of the elastic polymer layer 21 away from the air chamber 4, The shroud 3 includes a polymer airtight layer 31 and a strength support cloth layer 32 fixed on the side of the polymer airtight layer 31 away from the air chamber 4, and the elasticity of the lower sheet 2 is greater than that of the shroud 3. The rigidity of the shroud 3 is greater than the rigidity of the lower sheet 2; the elastic polymer layer 21 and the adjacent polymer airtight layer 31 are connected with a shaped drawstring 5, and the shaped drawstring 5 runs along the peripheral side of the lower sheet 2 The surface of the lower sheet 2 forms an internal suction chamber 6 recessed toward the inside of the air chamber 4 under the pulling force of the molded drawstring 5.

The present invention will be described in detail below with reference to the drawings and embodiments.

Example 1

Please refer to Figures 1 to 6, the present invention discloses an inflatable bed with a stable use position, including an upper sheet 1 and a lower sheet 2 arranged at intervals, and a peripheral side enclosed and fixed between the upper sheet 1 and the lower sheet 2 The shroud 3, the elasticity of the lower piece 2 is greater than the elasticity of the shroud 3, the rigidity of the shroud 3 is greater than the rigidity of the lower piece 2, and the upper piece 1, the lower piece 2 and the shroud 3 are closed In this embodiment, the upper sheet 1, the lower sheet 2 and the shroud 3 are all rectangular sheets. The upper sheet 1, the lower sheet 2 and the shroud 3 are all connected and formed by high frequency welding. The formed air cushion The bed is a square block. The upper sheet 1 includes a polymer material layer 11 adjacent to the air chamber 4 and a fabric layer 12 adjacently fixed on the side of the polymer material layer 11 away from the air chamber 4. The lower sheet 2 includes an elastic polymer layer 21 adjacent to the air chamber 4 and a woven fabric layer 22 adjacent to and fixed on the side of the elastic polymer layer 21 away from the air chamber 4. The shroud 3 includes a polymer airtight layer 31 adjacent to the air chamber 4 and a strength support fabric layer 32 fixed on the side of the polymer airtight layer 31 away from the air chamber 4.

Due to the arrangement of the elastic polymer layer 21, the lower sheet 2 has good elasticity. Due to the arrangement of the strength supporting fabric layer 32, the shroud 3 has good rigidity, that is, the ability to resist stretching and deformation when the air chamber 4 is filled with air.

The polymer material layer 11 and the elastic polymer layer 21 can be made of TPU, TPE or TPR and other high elastic polymer impermeable materials; the polymer airtight layer 31 can be made of impermeable polymer materials such as PVC; the fabric layer 12 can be The fabric layer 22 can be made of polyester, Oxford and other elastic fabrics or composite fabrics, and the strength support fabric layer 32 can be made of nylon with tensile strength. Fabric or composite fabric with compressive strength. In this embodiment, both the polymer material layer 11 and the elastic polymer layer 21 are made of TPU material with better elasticity, the polymer airtight layer 31 is made of TPU material, the fabric layer 12 is made of warp-knitted short pile fabric, and the weaving layer 22 is made of polyester Oxford The strength support fabric layer 32 is made of plain woven nylon fabric.

As shown in Figures 3 and 4, the elastic polymer layer 21 and the polymer material layer 11 are also fixed on the layer near the side of the air chamber 4 with a shaped drawstring 5, and one end of the shaped drawstring 5 is fixedly connected to The elastic polymer layer 21 is on the inner layer adjacent to the side edge or the polymer material layer 11 is on the inner layer adjacent to the side edge. The other end of the shaped drawstring 5 is fixedly connected to the inner layer of the adjacent polymer airtight layer 31 on. With reference to Figure 5, the forming drawstring 5 is arranged along the side of the lower sheet 2 and the side of the upper sheet 1. The surface of the lower sheet 2 forms an inner suction cavity recessed toward the air chamber 4 under the pulling force of the forming drawstring 5 Room 6. In this embodiment, the shaped drawstring 5 is set as a continuous long strip of drawstrings. In actual production, multiple linear drawstrings or cylindrical drawstrings with different shapes can be used to form a drawstring group, which is similar to this embodiment. The use method and effect of the sheet-like drawstring are the same. In this embodiment, there are four shaped drawstrings 5 adjacent to the four sides of the lower sheet 2 respectively. The shape of the inner suction chamber 6 in this embodiment is approximately a rectangular cavity shape. The shaped drawstring 5 between the upper sheet 1 and the shroud 3 has the same structure as the shaped drawstring 5 between the lower piece 2 and the shroud 3 and is arranged symmetrically up and down.

As shown in Figures 2 and 3, the inner bottom surface of the suction chamber 6 adjacent to the air chamber 4 is also provided with a recessed portion 61 that is recessed toward the side of the air chamber 4. In this embodiment, the recessed portion 61 The number is two. Two indented parts 61 are arranged in the middle of the bottom surface of the inner suction chamber 6. The shape of the indented part 61 is approximately a square cavity, and the two indented parts 61 are adjacently arranged in the inner suction chamber. The outer bottom surface of the chamber 6 is distributed in a Japanese shape, and each indented portion 61 is in a mouth shape. 6, the indented portion 61 is adjacent to the elastic polymer layer 21 of the air chamber 4 is also fixedly connected with an inner drawstring 62, one end of the inner drawstring 62 is connected to the inner side of the indented portion 61, the inner The other end of the pull strap 62 is fixedly connected to the polymer material layer 11 in the upper sheet 1 adjacent to the air chamber 4, and several inner pull straps 62 are arranged along the outer peripheral side of the recessed portion 61. The adjacent recessed portions 61 are separated by a middle pull strap 63, and both ends of the middle pull strap 63 are respectively vertically fixedly connected to the elastic polymer layer 21 and the polymer material layer 11 of the upper sheet 1. In this embodiment, the inner drawstring 62 and the middle drawstring 63 are both sheet-shaped drawstrings. In this embodiment, the number of the inner drawstring 62 is four, and the number of the middle drawstring 63 is one.

As shown in Figures 3 and 4, the connecting end of the inner drawstring 62 and the polymer material layer 11 is located on the side of the elastic polymer layer 21 away from the middle drawstring 63, so that the inner drawstring in the air chamber 4 62 is arranged obliquely toward the side away from the middle drawstring 63. With reference to Figure 6, the inner drawstrings 62 located on both sides of the middle drawstring 63 are symmetrically arranged on the center axis of the air chamber 4 in an outer eight shape, located on both sides of the middle drawstring 63 The distance between the inner drawstring 62 and the middle drawstring 63 and the connection inclination angle of the upper piece 1 and the lower piece 2 are the same. The connecting length of the middle drawstring 63 and the inner drawstring 62 with the upper sheet 1 is greater than the connecting length with the lower sheet 2, so that the middle drawstring 63 and the inner drawstring 62 are both arranged in an isosceles trapezoid with a short bottom and a long top.

Example 2

Referring to Figures 7 to 10, the present invention discloses an inflatable bed with a stable use position. The difference between this embodiment and Embodiment 1 is that the indented portion 61 in this embodiment is the inner suction chamber 6 The number on the bottom surface is three, and the three indented parts 61 are adjacently distributed in the middle of the bottom surface of the inner suction chamber 6 and are in a mesh shape. The three indented parts 61 are separated by two spaced-apart central drawstrings 63. As a result, the number of the middle drawstring 63 in this embodiment is two, and the number of the inner drawstring 62 is four.

Example 3

Please refer to Figures 11 to 14. The present invention discloses an inflatable bed with a stable use position. The difference between this embodiment and Embodiment 2 is that in this embodiment, the recessed portions 61 are two spaced apart The indented portion 61 is in the shape of a mouth, and the two indented portions 61 are respectively located at the bottom of the inner suction chamber 6 near the shroud 3, and the sides of the adjacent side of the two indented portions 61 are connected to the middle drawstring 63 , And the connecting edge of the inner drawstring 62 and the upper piece 1 is connected with the connecting edge of the forming drawstring 5 and the upper piece 1, so that the number of the middle drawstring 63 in this embodiment is two, and the inner drawstring 62 The number is six, and the two inner drawstrings 62 adjacent to the middle drawstring 63 are in a right-angled trapezoid shape, and the inner drawstring 62 opposite to the middle drawstring 63 is an isosceles trapezoid. Each indented part 61 is drawn by a middle part. The belt 63 and the three inner pull belts 63 are formed by surrounding and connecting and fixing the upper piece 1 and the lower piece 2.

The working process and beneficial effects of the present invention are as follows: when using an inflatable bed, first inflate the air chamber 4 to expand the air chamber 4, and after the inflatable bed is formed, the user sits on the surface of the upper sheet 1 for sleep and rest. The upper sheet 1 is deformed and depressed downward due to the influence of the use action, such as the pressure of the body weight, and the lower sheet 2 including the elastic polymer layer 21 is synchronized by the pressure force because the upper sheet 1 deforms and squeezes the gas in the air chamber 4 Elastic deformation occurs downward, and the air between the inner suction chamber 6 and the placement surface is discharged outward under the influence of the deformation of the lower sheet 2 at this time. At the same time, the shroud 3 composed of the strength support fabric layer 32 has good rigidity and resistance to deformation, and the bottom surface of the inner suction chamber 6 is closely attached to the placement surface due to its good rigidity and resistance to deformation, which provides a stable support for the air bed. At this time, the air pressure inside the upper and lower sheet 2 is lower than the atmospheric pressure outside the lower sheet 2, so that the upper suction chamber 6 of the lower sheet 2 and the indented portion 61 form an equivalent internal and external double suction cup structure. The inflatable bed has a positioning effect, thereby ensuring the stability of the position of the inflatable bed during use, and avoiding the position of the inflatable bed from shifting or even turning over due to the force generated by the user's action on the surface during use of the inflatable bed The occurrence of this ensures the use effect of the inflatable bed.

The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments. All technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications made without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (9)

1. An inflatable bed with a stable use position, comprising an upper piece (1) and a lower piece (2) arranged at intervals, and a surrounding belt (2) located between the upper piece (1) and the lower piece (2). 3) The upper sheet (1), the lower sheet (2) and the shroud (3) form a closed air chamber (4), characterized in that: the lower sheet (2) includes an elastic polymer layer (21) And a woven fabric layer (22) located adjacent to and fixed on the side of the elastic polymer layer (21) away from the air chamber (4). The shroud (3) includes a polymer airtight layer (31) and a polymer airtight layer (31). The layer (31) is far away from the air chamber (4). The fixed strength support cloth layer (32) is fixed. The elasticity of the lower sheet (2) is greater than that of the shroud (3), and the rigidity of the shroud (3) is greater than The rigidity of the lower sheet (2); the elastic polymer layer (21) and the adjacent polymer airtight layer (31) are connected with a shaped drawstring (5), and the shaped drawstring (5) is along the bottom The sheet (2) is provided on the peripheral side, and the surface of the lower sheet (2) forms an internal suction chamber (6) recessed toward the air chamber (4) under the pulling force of the molded draw band (5).
2. The inflatable bed with stable use position according to claim 1, characterized in that: the inner bottom surface of the inner suction chamber (6) adjacent to the air chamber (4) is also provided with a side facing the air chamber (4) The invaginated part (61).
3. The inflatable bed with stable use position according to claim 2, characterized in that: the indented portion (61) is located on the outer bottom surface of the inner suction chamber (6) and is located at the bottom of the inner suction chamber (6) Central.
4. The inflatable bed with stable use position according to claim 3, characterized in that: the elastic polymer layer (21) and the inner layer of the upper sheet (1) adjacent to the air chamber (4) are connected and fixedly drawn A belt (62), where the connection between the inner pull belt (62) and the elastic polymer layer (21) is the inner side of the indented portion (61).
5. The inflatable bed with stable use position according to claim 4, characterized in that: the inner pull belt (62) is arranged around the inner peripheral side of the upper recessed portion (61) of the lower sheet (2).
6. The inflatable bed with stable use position according to claim 5, characterized in that: the two adjacent indented portions (61) are separated by a middle drawstring (63), the middle drawstring (63) The two ends of the plate are fixed vertically with the upper piece (1) and the lower piece (2) respectively.
7. An inflatable bed with a stable use position according to claim 6, characterized in that: the connecting end of the inner drawstring (62) and the upper sheet (1) is located at the connecting end of the elastic polymer layer (21) A side away from the middle drawstring (63), the middle drawstring (63) and the inner drawstring (62) are arranged in a trapezoidal shape with a short bottom and a long top.
8. The inflatable bed with stable use position according to claim 7, characterized in that: the inner drawstrings (62) on both sides of the middle drawstring (63) are symmetrical about the central axis of the air chamber (4). Set up.
9. The inflatable bed with stable use position according to claim 1, characterized in that: the upper sheet (1) is adjacent to the inner layer of the shroud (3) and the adjacent polymer airtight layer (31) The connection is provided with a shaped pull strap (5).