WO2018135004A1

WO2018135004A1 - Air mattress

Info

Publication number: WO2018135004A1
Application number: PCT/JP2017/002150
Authority: WO
Inventors: 正寿粟井
Original assignee: 株式会社ハイビックス
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2018-07-26
Also published as: JPWO2018135004A1; AU2017265166B2; EP3372120A1; AU2017265166A1; EP3372120A4

Abstract

This air mattress (20) is provided with a plurality of cells (21, 22, 23) disposed along the longitudinal direction thereof. The cells (21, 22, 23) are each formed of a synthetic resin sheet in a sac-like shape, and respectively have air supply ports (21a, 22a, 23a) for supplying air thereinto. The cells (21, 22, 23) comprise at least one specified cell (S) for the buttocks (G) of a user (U), and a plurality of non-specified cells (NS) other than the specified cell (S). The air mattress (20) is provided with: a first air supply system (60) which is connected with the air supply port of the specified cell (S) and which supplies air to said specified cell (S); and a second air supply system (70) which is connected with the plurality of air supply ports of the plurality of non-specified cells (NS) and which supplies air to those non-specified cells (NS).

Description

Air mat

The present invention relates to an air mat.

In conventional air mats, various measures are taken to prevent pressure ulcers from occurring on the user lying on the air mat for a long time. For example, the air mat disclosed in Patent Document 1 includes a plurality of air cells that extend along the width direction of the air mat and are connected to each other along the longitudinal direction of the air mat. Each air cell includes an elongated bag-shaped first cell filled with air, and second and third cells having a diameter half that of the first cell and the same length. A second cell and a third cell are welded in parallel on the upper surface of the first cell. When a load is applied to the air mat when the air mat is used, the second cell and the third cell in each air cell are displaced so as to escape outward. As a result, the contact area between the air mat and the user's body surface is widened to reduce the contact pressure, thereby suppressing the occurrence of pressure ulcers.

On the other hand, the air mat of Patent Document 2 includes a plurality of air cells that extend along the width direction of the air mat and are connected to each other along the longitudinal direction of the air mat. Each air cell is composed of three cells, an upper stage, a middle stage, and a lower stage, and the upper stage cell communicates with the middle stage cell. The air mat further includes a supply / exhaust pump, first and second system tubes connecting the pump to each cell, a sensor for detecting the pressure in the air cell for each system, and a user's weight. And a control circuit for controlling the pump in accordance with the input from each sensor and the input body weight. Thereby, in the case of a heavy person, the sinking of the mat is prevented from becoming larger than that of a light person.

JP 2008-125798 A JP2011-160896

However, the conventional air mat composed of a plurality of cells has the following problems. That is, when raising the back of the user of the air mat, a large part of the load of the entire upper body of the user is in a cell corresponding to the user's buttocks (hereinafter referred to as a specific cell) among a plurality of cells. It takes. Therefore, the air in a specific cell flows out, and the outflowed air flows into another cell connected via a tube. As a result, the amount of air in the specific cell decreases, and the user's buttocks may bottom out.

Therefore, in the conventional air mat, when raising the back, air is supplied to a specific cell corresponding to the buttock by an air supply device, and the inner pressure of the specific cell is made higher than usual so that the bottom of the buttock is raised. Suppressed.

However, in this case, the number of parts such as a control device for supplying air to the specific cell when the back is raised increases, and the configuration of the air mat becomes complicated, which may cause an increase in manufacturing cost.
The present invention has been made in consideration of the above-described circumstances, and its purpose is to provide an air mat that can suppress the bottom of the user's buttocks when raising the back while suppressing an increase in the number of parts. It is to provide.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
An air mat that solves the above problem includes a plurality of cells arranged along the longitudinal direction of the air mat, each cell is formed in a bag shape by a synthetic resin sheet, and has an air supply port for supplying air to the inside. In the air mat, the plurality of cells include at least one specific cell corresponding to a user's buttocks and a plurality of non-specific cells other than the specific cell, and the air mat includes an air supply port of the specific cell. And a second air supply that is connected to the plurality of non-specific cells and supplies air to the non-specific cells. System.

According to this configuration, the first air supply system is connected only to the air supply port of the specific cell corresponding to the buttock among the plurality of cells. Therefore, when a user is raised, even if a high load is applied to the specific cell corresponding to the buttocks, air in the specific cell may flow into a non-specific cell corresponding to a part other than the user's buttocks. It is suppressed. Thereby, when raising a user's back, it is possible to suppress bottoming of a user's buttocks, without raising the internal pressure of a specific cell temporarily.

In the air mat, the first air supply system includes a first tube connected to an air supply port of the specific cell, a first air supply source connected to the first tube, and the second air supply system. The air supply system preferably includes a second tube connected to the plurality of air supply ports of the plurality of non-specific cells, and a second air supply source connected to the second tube.

According to this structure, the structure of an air mat can be simplified and an air mat can be manufactured cheaply.
In the air mat, it is preferable that the first air supply source is a first manual pump and the second air supply source is a second manual pump.

According to this structure, the structure of an air mat can be simplified compared with the case where an electric pump is used as an air supply source.
In the air mat, the plurality of air supply ports of the plurality of non-specific cells are arranged so as to be aligned on a straight line extending along the longitudinal direction in the air mat, and the plurality of air supply ports of the non-specific cells; The air supply ports of the specific cells are preferably spaced apart from each other in the width direction of the air mat.

According to this configuration, the air supply port of the specific cell and the air supply port of the non-specific cell can be easily discriminated, and each of the first air supply system and the second air supply system is set to an appropriate air. It can be easily connected to the supply port.

According to the present invention, it is possible to obtain an air mat that can suppress the bottom of the user's buttocks when raising the back while suppressing an increase in the number of parts.

The top view which shows the use condition of the air mat of one Embodiment. The bottom view of the air mat of FIG. The side view which shows the air mat of FIG. 1 in the state which removed the case, the tether, and the air supply system. FIG. 4 is an enlarged cross-sectional view of the first cell along line 4-4 in FIG. 1; FIG. 5 is an enlarged cross-sectional view of the second cell taken along line 5-5 in FIG. FIG. 6 is an enlarged cross-sectional view of a third cell taken along line 6-6 of FIG. The partial bottom view of the air mat of a comparative example. The perspective view which shows a pressurizer. Schematic which shows the state at the time of a test. FIG. 10 shows the results of a test in the air mat of one embodiment, where (a) is a pressure distribution diagram, (b) is a diagram showing the amount of subsidence along the line 10b-10b in FIG. 10 (a), and (c) is FIG. The figure which shows the amount of subsidence along the 10c-10c line of (a). The test results of the air mat of the comparative example are shown, (a) is a pressure distribution diagram, (b) is a diagram showing the amount of subsidence along the line 11b-11b in FIG. 11 (a), and (c) is FIG. The figure which shows the amount of subsidence along the 11c-11c line of a).

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. First, a schematic configuration of the air mat will be described. As shown in FIGS. 1 to 3, the air mat 20 includes three types of cells each having a different configuration, that is, a plurality of first, second, and

third cells

21, 22, and 23, respectively. The first, second, and

third cells

21, 22, and 23 are disposed along the longitudinal direction of the air mat 20 and are accommodated in the case 30. The case 30 is made of a synthetic resin such as polyurethane, and includes a bottom wall 30a and first to fourth side walls 30b to 30e extending upward from four sides of the bottom wall 30a. The first side wall 30 b and the second side wall 30 c face each other in the longitudinal direction of the air mat 20, and the third side wall 30 d and the fourth side wall 30 e face each other in the width direction of the air mat 20. In FIG. 2, the bottom wall 30a is shown in a state where a part thereof is omitted. Each

cell

21, 22, 23 extends along the width direction of the air mat 20 and is connected to the third and

fourth side walls

30 d, 30 e of the case 30.

On the upper surface of the air mat 20, a pair of tethers 40 that are made of a synthetic resin such as polyurethane and suppress the displacement of the

cells

21, 22, 23 when the air mat 20 is used are disposed. Each tether 40 extends along the longitudinal direction of the air mat 20, and both ends thereof are coupled to the first and

second side walls

30b and 30c of the case 30, respectively. Further, a non-slip portion 50 is provided on the outer surface of the bottom wall 30a to prevent the air mat 20 from slipping on the floor plate of the bed, for example. The air mat 20 is used with its upper surface covered with a cover or the like, but the cover is not shown in FIG.

In the air mat 20, the plurality of first cells 21 are provided corresponding to the buttocks G including the waist of the user U, and the plurality of second cells 22 are provided corresponding to the shoulders SH and legs L of the user U. The plurality of third cells 23 are provided corresponding to the head H, the back B, and the thigh F of the user U.

Specifically, the number of the third cells 23 corresponding to the head H is two, the number of the third cells 23 corresponding to the back B is two, and the third cells corresponding to the thigh F The number of 23 is three. The number of the second cells 22 corresponding to the shoulder portion SH and the leg portion L is two. The number of the first cells 21 corresponding to the collar part G is two. However, the number of cells corresponding to each part can be changed as necessary.

The first cell 21 is connected to a first air supply system 60 for supplying air to the first cell 21. A second air supply system 70 for supplying air to the second and

third cells

22 and 23 is connected to the second and

third cells

22 and 23. Details of the first and second

air supply systems

60 and 70 will be described later.

Next, each

cell

21, 22, 23 will be described in detail.
As shown in FIGS. 1 to 3, each first cell 21 is formed in a bag shape from a synthetic resin sheet such as polyurethane. The first cell 21 has an air supply port 21a for supplying air therein. In the first cell 21, a connecting portion 21b including a button or the like for connecting the first cell 21 to the third side wall 30d is provided at a location facing the third side wall 30d of the case 30. Similarly, in the 1st cell 21, the connection part (illustration omitted) for connecting the 1st cell 21 to the 4th side wall 30e is provided in the location facing the 4th side wall 30e.

As shown in FIG. 4, one partition wall 21 c extending along the longitudinal direction and the width direction of the air mat 20 is disposed inside the first cell 21. The partition wall 21 c is formed of the same synthetic resin sheet as that of the first cell 21. Of the resin sheet constituting the first cell 21, a portion located above the partition wall 21 c is coupled to the partition wall 21 c at a plurality of locations, whereby a plurality of upper coupling portions 21 d are formed in the first cell 21. Yes. In the first cell 21, an upper bulging portion 21e that bulges upward is formed around each upper coupling portion 21d. The plurality of upper coupling portions 21d are formed such that the two upper coupling portions 21d are respectively positioned on a plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20. In other words, the plurality of upper coupling portions 21d are arranged on the intersections of the rhombus lattice. Therefore, the plurality of upper bulge portions 21e are also arranged on a plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20.

Of the resin sheets constituting the plurality of first cells 21, portions located below the partition walls 21c are coupled to the partition walls 21c at a plurality of locations, whereby the first cells 21 have a plurality of lower coupling portions 21f. Is formed. In the first cell 21, a lower bulging portion 21g that bulges downward is formed around each lower coupling portion 21f. In the present embodiment, the plurality of lower coupling portions 21f are formed on the plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20 so that the two lower coupling portions 21f are respectively positioned. Yes. In other words, the plurality of lower coupling portions 21f are arranged on the intersections of the rhombus lattice. Accordingly, the plurality of lower bulges 21g are also arranged on a plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20.

The upper bulging portion 21e and the lower bulging portion 21g communicate with each other through a communication port 21h formed in the partition wall 21c. When the air mat 20 is used, the contact area with respect to the user U is reduced by the plurality of upper bulging portions 21e, and it is possible to give the user U a soft contact feeling.

As shown in FIGS. 1 to 3, each second cell 22 is formed in a bag shape from a synthetic resin sheet such as polyurethane. The second cell 22 has an air supply port 22a for supplying air therein. In the second cell 22, a connecting portion 22 b including a button or the like for connecting the second cell 22 to the third side wall 30 d is provided at a location facing the third side wall 30 d of the case 30. Similarly, in the second cell 22, a connection portion (not shown) for connecting the second cell 22 to the fourth side wall 30e is provided at a location facing the fourth side wall 30e. The second cell 22 has the same configuration as that of the first cell 21 except that the air supply port 22a is located outside the air supply port 21a of the first cell 21 in the width direction of the air mat 20. . That is, as shown in FIG. 5, one partition 22 c extending along the longitudinal direction and the width direction of the air mat 20 is disposed inside the second cell 22. The partition wall 22 c is formed of the same synthetic resin sheet as that of the second cell 22.

Of the resin sheet constituting the second cell 22, a portion located above the partition wall 22 c is coupled to the partition wall 22 c at a plurality of locations, whereby a plurality of upper coupling portions 22 d are formed in the second cell 22. Yes. In the second cell 22, an upper bulging portion 22e that bulges upward is formed around each upper coupling portion 22d. The plurality of upper coupling portions 22d are formed so that the two upper coupling portions 22d are respectively positioned on a plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20. In other words, the plurality of upper coupling portions 22d are arranged on the intersections of the rhombus lattice. Therefore, the plurality of upper bulge portions 22e are also arranged on a plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20.

Of the resin sheets constituting the plurality of second cells 22, portions located below the partition wall 22 c are coupled to the partition wall 22 c at a plurality of locations, whereby the second cell 22 includes a plurality of lower coupling portions 22 f. Is formed. In the second cell 22, a lower bulging portion 22g that bulges downward is formed around each lower coupling portion 22f. In the present embodiment, the plurality of lower coupling portions 22f are formed such that the two lower coupling portions 22f are respectively positioned on a plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20. Yes. In other words, the plurality of lower coupling portions 22f are arranged on the intersections of the rhombus lattice. Therefore, the plurality of lower bulging portions 22g are also arranged on a plurality of virtual straight lines extending in parallel along the longitudinal direction of the air mat 20.

The upper bulging portion 22e and the lower bulging portion 22g communicate with each other through a communication port 22h formed in the partition wall 22c. When the air mat 20 is used, the contact area with respect to the user U is reduced by the plurality of upper bulging portions 22e, and it is possible to give the user U a soft contact feeling.

As shown in FIGS. 1 to 3, each third cell 23 has a configuration different from that of the first and

second cells

21 and 22, and is formed into a long bag shape by a synthetic resin sheet such as polyurethane. ing. The third cell 23 has an air supply port 23a for supplying air therein. The position of the air supply port 23a in the width direction of the air mat 20 is set to be the same as the position of the air supply port 22a of the second cell 22 in the same width direction. As shown in FIG. 3 and FIG. 6, in the third cell 23, a connection made of a button or the like for connecting the third cell 23 to the third side wall 30 d is provided at a location facing the third side wall 30 d of the case 30. A portion 23b is provided. Two connecting portions 23 b arranged in the vertical direction are provided in the third cell 23. Similarly, in the third cell 23, a connecting portion 23c including a button or the like for connecting the third cell 23 to the fourth side wall 30e is formed at a position facing the fourth side wall 30e of the case 30. . Two connecting portions 23 c arranged in the vertical direction are provided in the third cell 23. As shown in FIG. 6, unlike the first and

second cells

21 and 22, no partition wall is provided inside the third cell 23. Therefore, the internal space of the third cell 23 extends along the width direction of the air mat 20 without being partitioned.

Next, a first air supply system 60 and a second air supply system 70 that supply air to the air mat 20 will be described with reference to FIGS. 1 and 2.
Air is supplied to the two first cells 21 corresponding to the collar part G by the first air supply system 60 connected to the respective air supply ports 21a. Specifically, the first air supply system 60 functions as a first tube 61 connected to the air supply port 21a of each first cell 21 and a first air supply source, and the first tube 61 includes The first manual pump 62 is connected. The first tube 61 extends through the second side wall 30 c to the outside of the case 30. In the 1st tube 61, the connection part 63 for connecting the 1st tube 61 to the air supply port is provided in the location corresponding to each air supply port 21a. In the state where the first tube 61 is connected, the first cells 21 communicate with each other via the first tube 61 and the air supply port 21a. By operating the first manual pump 62, air is supplied to each first cell 21 via the first tube 61 and the first air supply port 21a. An operator of the first manual pump 62 operates the first manual pump 62 in a state where the user is raised, and supplies air to the first cell 21. And the operator puts a hand between the floor board and the air mat 20 and confirms the tactile sensation that the user's buttocks are not bottomed away from the floor board, and then the air to the first cell 21 is removed. End the supply.

Two third cells 23 corresponding to the head H, two second cells 22 corresponding to the shoulder SH, two third cells 23 corresponding to the back B, and three corresponding to the thigh F Air is supplied to the third cell 23 and the two second cells 22 corresponding to the legs L by the second air supply system 70 connected to the respective

air supply ports

22a and 23a. Specifically, the second air supply system 70 functions as a second tube 71 connected to the

air supply ports

22a and 23a of the second and

third cells

22 and 23, a second air supply source, and The second manual pump 72 is connected to the second tube 71. The second tube 71 extends through the second side wall 30 c to the outside of the case 30. In the 2nd tube 71, the connection part 73 for connecting the 2nd tube 71 to the air supply port is provided in the location corresponding to each

air supply port

22a, 23a. In the state where the second tube 71 is connected, the second and

third cells

22 and 23 communicate with each other via the second tube 71 and the

air supply ports

22a and 23a. By operating the second manual pump 72, air is supplied to the second and

third cells

22 and 23 via the second tube 71 and the second and third

air supply ports

22a and 23a. Air is supplied to the second and

third cells

22 and 23 by the second manual pump 72 in a manner different from that of the first manual pump 62. Specifically, the operator of the second manual pump 72 does not check the bottom of the user's buttocks but supplies air to any hardness that the user feels comfortable when lying down, The supply of air to the

third cells

22 and 23 is terminated.

That is, among the plurality of cells constituting the air mat 20, the cell (first cell 21) corresponding to the buttocks G is referred to as a specific cell S, and cells other than the specific cell S (second and third cells 22 and 23) are referred to. When the non-specific cell NS is referred to, air is supplied to the specific cell S by the first air supply system 60 connected to the air supply ports, and the air is supplied to the non-specific cell NS. Air is supplied by a second air supply system 70 connected to the supply port. In the present embodiment, the air supply port of the non-specific cell NS, more specifically, the second and third cells 22 corresponding to the head H, shoulder SH, back B, thigh F, and leg L. , 23 are arranged so as to be aligned on a straight line extending along the longitudinal direction of the air mat 20. And the air supply port of the specific cell S, more specifically, the air supply ports 21a of the two first cells 21 corresponding to the collar portion G are arranged so as to be aligned on a straight line extending along the longitudinal direction of the air mat 20. The air mat 20 is separated from the

air supply ports

22a and 23a of the second and

third cells

22 and 23 in the width direction of the air mat 20. Therefore, the air supply port of the specific cell S (first cell 21) and the air supply port of the non-specific cell NS (second and third cells 22, 23) can be easily distinguished. Each of the first and second air supply systems 60 and 70 (first and second tubes 61 and 71) can be easily connected to an appropriate air supply port.

Next, the operation of the air mat 20 will be described based on a comparison with a comparative example.
First, the configuration of the air mat 120 in the comparative example will be described.
As shown in FIG. 7, the air mat 120 of the comparative example includes a second cell 22 instead of the first cell 21 as the specific cell S corresponding to the collar part G, and the second and third cells 22 constituting the

air mat

120, 23 differs from the air mat 20 of the present embodiment in that all 23 are connected to the first air supply system 160. That is, the air mat 120 includes a plurality of second cells 22 provided corresponding to the shoulder portion SH, the heel portion G, and the leg portion L of the user U, the head H, the back portion B, and the thigh of the user U. And a plurality of third cells 23 provided corresponding to the part F. The number of the third cells 23 corresponding to the head H is two, the number of the third cells 23 corresponding to the back B is two, and the number of the third cells 23 corresponding to the thigh F is three. It is a piece. The number of the second cells 22 corresponding to the shoulder portion SH, the heel portion G, and the leg portion L is two. In the air mat 120 of the comparative example, the same components as those of the present embodiment are denoted by the same reference numerals, and detailed description thereof is omitted here.

The air supply ports of all the cells constituting the air mat 120, that is, the

air supply ports

22a and 23a of the second and

third cells

22 and 23, are arranged so as to be aligned on a straight line extending along the longitudinal direction of the air mat 120. A first air supply system 160 is connected to the

air supply ports

22a and 23a. Specifically, the first air supply system 160 includes a first tube 161 connected to the

air supply ports

22a and 23a of the second and

third cells

22 and 23, and a first tube connected to the first tube 161. And a manual pump 162. The first tube 161 extends through the second side wall 30 c to the outside of the case 30. In the first tube 161, a connection portion 163 for connecting the first tube 161 to the air supply port is provided at a position corresponding to each of the

air supply ports

22a and 23a. In a state where the first tube 161 is connected, the second and

third cells

22 and 23 communicate with each other via the first tube 161 and the

air supply ports

22a and 23a.

The comparison test between the air mat 20 of the present embodiment and the air mat 120 of the comparative example was performed using a pressurizer in “Home Missed Prevention Tool” of JIS T9256-3. More specifically, as shown in FIG. 8, a weight W is placed on the pressurizer P so that the mass including the pressurizer P becomes 23 kg. As shown in FIG. 9, for each of the

air mats

20 and 120, the contact pressure sensor CS is disposed on the two specific cells S corresponding to the collar portion G, and the above-described pressurizer is placed on the contact pressure sensor CS. P was placed. And about each of the

air mats

20 and 120, the distribution of the pressure applied to the specific cell S and the sinking amount of the specific cell S were measured. In order to acquire test data, a computer (PC) is connected to the contact pressure sensor CS. The results of the comparative test are shown in FIGS. 10 (a) to 10 (c) and FIGS. 11 (a) to 11 (c). 10A and 11A show the pressure distribution, and the unit of the numbers in the figure is kPa. 10A and 11A, the x axis corresponds to the width direction of the air mat, and the y axis corresponds to the longitudinal direction of the air mat. 10 (b), FIG. 10 (c), FIG. 11 (b), and FIG. 11 (c) each show the subsidence amount of the specific cell S, and the subsidence is deeper along the arrows in each figure. Show.

As shown in FIG. 10A, in the air mat 20 of the present embodiment, the pressurizer P is uniformly supported by the specific cell S (two first cells 21), and the specific cell S (first cell 21). ) No local pressure has occurred. Further, as shown in FIGS. 10B and 10C, the sink of the specific cell S is shallow and almost constant. On the other hand, as shown in FIG. 11A, in the air mat 120 of the comparative example, local compression by the pressurizer P occurs in the specific cell S (two second cells 22). In addition, as shown in FIGS. 11B and 11C, there is a deeply depressed portion in the specific cell S corresponding to the local compression. The maximum contact pressure of the specific cell S (two first cells 21) in the air mat 20 of the present embodiment is 6.3 kPa (47 mmHg), and the specific cell S (two second cells 22) in the air mat 120 of the comparative example. ) Was 13.6 kPa (102 mmHg). Therefore, according to the air mat 20 of the present embodiment, it can be said that the bottom of the user's U's buttocks G is less likely to occur than the air mat 120 of the comparative example.

The reason why the air mat 20 of the present embodiment can support the pressurizer P more uniformly and can make the sinking shallower than the air mat 120 of the comparative example is as follows.
In other words, the first tubes 161 of the first air supply system 160 are connected to the

air supply ports

22a and 23a of all the second and

third cells

22 and 23 constituting the air mat 120 of the comparative example. When the pressurizer P is placed on the two second cells 21 (specific cells S) corresponding to the flanges G, the air in the second cells 22 (specific cells S) passes through the air supply ports 22a. It flows out of the second cell 22. Then, the air that has flowed out from the specific cell S (two second cells 22) flows into the non-specific cell NS (second and third cells 22, 23) via the first tube 161. Therefore, the internal pressure in the specific cell S (two second cells 22) decreases, and the pressurizer cannot be uniformly supported by the entire specific cell S (two second cells 22), and the specific cell S (2 Two second cells 22) sink deep locally.

On the other hand, in the air mat 20 of the present embodiment, the first tube 61 of the first air supply system 60 is connected to the air supply port 21a of the first cell 21 (specific cell S) corresponding to the collar portion G. The second tube 71 of the second air supply system 70 is connected to the

air supply ports

22a and 23a of the second and third cells 22 and 23 (non-specific cell NS). When the pressurizer P is placed on the two first cells 21 (specific cell S), the air in each first cell 21 (specific cell S) is passed through the air supply port 21a. Try to leak outside. However, the first tube 61 connected to the air supply port 21a of the first cell 21 (specific cell S) is connected only to the air supply port 21a of the first cell 21. That is, in the plurality of first, second, and

third cells

21, 22, and 23 constituting the air mat 20, the first cell 21 (specific cell S) is independent of other cells with respect to the air supply system. Like the air mat 120 of the comparative example, the air flowing out from the specific cell S (first cell 21) does not flow into the non-specific cell NS (second and third cells 22, 23). Therefore, the internal pressure in the first cell 21 (specific cell S) is maintained, and the pressurizer P can be uniformly supported by the entire first cell 21. Therefore, the specific cell S (first cell 21) is suppressed from sinking deeply.

Next, the effect of this embodiment will be described.
(1) The air mat 20 includes a first air supply system 60 and a second air supply system 70. The first air supply system 60 is connected to the air supply port 21a of the first cell 21 (specific cell S) corresponding to the buttocks G of the user U among the plurality of cells constituting the air mat 20, and Air is supplied into the cell 21. The second air supply system 70 includes second and third cells 22 and 23 (non-specific cells NS) other than the first cell 21 (specific cell S) corresponding to the collar portion G among the plurality of cells constituting the air mat 20. ) To supply air into the second and

third cells

22 and 23.

Therefore, when the user U is raised, even if a high load is applied to the specific cell S (first cell 21) corresponding to the buttocks G, the specific cell S to the non-specific cell NS (second and third cells). 22 and 23) is prevented from flowing in air. Therefore, the internal pressure of the specific cell S (first cell 21) can be maintained when the user U is raised. Therefore, it is possible to suppress the bottom of the buttocks G without temporarily increasing the internal pressure of the specific cell S (first cell 21) when the user U is raised.

(2) The first air supply system 60 includes a first tube 61 connected to the air supply port 21a of the first cell 21 (specific cell S), the first tube 61, and a first air supply source. As a first manual pump 62. The second air supply system 70 is connected to the second tube 71 connected to the

air supply ports

22a, 23a of the second and third cells 22, 23 (non-specific cell NS), the second tube 71, and And a second manual pump 72 functioning as a second air supply source.

Therefore, the structure of the air mat can be simplified and the air mat can be manufactured at a low cost. Further, since the first and second manual pumps 62 and 72 are used as the first and second air supply sources, the configuration of the air mat can be simplified as compared with the case where the electric pump is used as the air supply source. Is possible.

(3) In the air mat 20, the

air supply ports

22a and 23a of the second and third cells 22 and 23 (non-specific cell NS) are arranged so as to be aligned on a straight line extending in the longitudinal direction. The

air supply ports

22a and 23a of the second and third cells 22 and 23 (non-specific cell NS) and the air supply port 21a of the first cell 21 (specific cell S) are separated from each other in the width direction of the air mat 20. ing.

Therefore, the air supply port of the specific cell S (first cell 21) and the air supply port of the non-specific cell NS (second and third cells 22, 23) can be easily distinguished, and the first air Each of the supply system 60 and the second air supply system 70 can be easily connected to an appropriate air supply port.

The said embodiment can also be changed as follows, for example.
-The cell corresponding to the buttocks G of the user U is not limited to the plurality of first cells 21. As a cell corresponding to the collar part G, a single cell having a size that can correspond to the collar part G may be used.

· Air supply ports of a plurality of non-specific cells NS may not be arranged so as to be aligned on a straight line extending along the longitudinal direction of the air mat. The air supply port of the non-specific cell NS and the air supply port of the specific cell S may not be separated from each other in the width direction of the air mat.

The plurality of cells constituting the air mat are not limited to the first, second, and

third cells

21, 22, and 23. That is, the air mat can be composed of a plurality of cells having an arbitrary shape.

· The first and second air supply sources are not limited to the first and second manual pumps. The first and second electric pumps may be used as the first and second air supply sources. Even in this case, since the first air supply system including the first electric pump is connected only to the specific cell corresponding to the heel part G, it is not necessary to supply air to the specific cell when raising the back. Therefore, there is no need for a control device or the like for supplying air to the specific cell at the time of raising the back, while suppressing an increase in the number of parts compared to a conventional air mat that supplies air to the specific cell at the time of raising the back. It is possible to suppress the bottom of the user's buttocks.

DESCRIPTION OF SYMBOLS 20 ... Air mat, 21 ... 1st cell, 22 ... 2nd cell, 23 ... 3rd cell, 21a ... Air supply port, 22a ... Air supply port, 23a ... Air supply port, 60 ... 1st air supply system, 61 ... 1st tube, 62 ... 1st manual pump, 70 ... 2nd air supply system, 71 ... 2nd tube, 72 ... 2nd manual pump, S ... Specific cell, NS ... Non-specific cell.

Claims

In an air mat comprising a plurality of cells arranged along the longitudinal direction of the air mat, each cell being formed into a bag shape by a synthetic resin sheet, and having an air supply port for supplying air therein,
The plurality of cells includes at least one specific cell corresponding to the user's buttocks and a plurality of non-specific cells other than the specific cell,
The air mat is connected to an air supply port of the specific cell, and a first air supply system that supplies air to the specific cell;
An air mat comprising: a second air supply system connected to a plurality of air supply ports of the plurality of non-specific cells and supplying air to the non-specific cells.
The first air supply system includes a first tube connected to an air supply port of the specific cell, and a first air supply source connected to the first tube, and the second air supply system includes The air mat according to claim 1, further comprising: a second tube connected to a plurality of air supply ports of the plurality of non-specific cells; and a second air supply source connected to the second tube. .
The air mat according to claim 2, wherein the first air supply source is a first manual pump, and the second air supply source is a second manual pump.
The plurality of air supply ports of the plurality of non-specific cells are arranged so as to be aligned on a straight line extending along the longitudinal direction,
The plurality of air supply ports of the non-specific cell and the air supply port of the specific cell are separated from each other in the width direction of the air mat. Air mat.