JP2019017729A - Body pressure support cushion and its manufacturing method - Google Patents

Abstract

To provide a body pressure support cushion of a new structure in which a superior body pressure dispersion effect can be obtained by a simple structure and the expanding/shrinking deformation properties of support cells can easily be adjusted, and provide a manufacturing method of the body pressure support cushion integrally including the support cells and an auxiliary cell.SOLUTION: A body pressure support cushion 10 comprises: (a) support cells 12 including fluid chambers 20 and capable of expanding/shrinking deformation; (b) an auxiliary cell 14 including an expanding/shrinking auxiliary chamber 44 being brought into communication with the fluid chambers 20; (c) an actuating chamber 42 formed in an opposite side pinching a flexible action film 40 to the expanding/shrinking auxiliary chamber 44 in the auxiliary cell 14; (d) an elastic body 46 housed in the actuating chamber 42; (e) an air opening hole 48 for opening the actuating chamber 42 in the air; (f) a pressure regulation opening 64 enabling supply and discharge of the fluid to the expanding/shrinking auxiliary chamber 44; and (g) a cock member 68 for switching the pressure regulation opening 64 into a communication state and a cut-off state.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a body pressure support cushion capable of effectively dispersing a user's body pressure over a wide range and a method for manufacturing the body pressure support cushion.

  Conventionally, there has been known a body pressure support cushion that reduces the pressure acting on the user's body when the user lies or sits on the support surface to improve sleeping comfort and sitting comfort. Application to such is being considered. This body pressure support cushion includes a support cell in which a fluid chamber is provided, as disclosed in, for example, JP-A-2017-51549 (Patent Document 1), and is disposed on a support surface. The contact area between the user and the body pressure support cushion is ensured to be large and the pressure acting on the user is dispersed by expanding and contracting according to the load applied by the support cell.

  By the way, in patent document 1, the structure which can produce the expansion-contraction deformation | transformation of a support cell with a larger stroke and more rapidly is proposed by providing the auxiliary cell provided with the expansion-contraction auxiliary chamber connected to the fluid chamber of the support cell. Yes. This auxiliary cell has a structure in which an intermediate film is arranged inside the outer membrane, and an expansion / contraction auxiliary chamber communicated with a fluid chamber of the support cell and an elastic means are accommodated on both sides of the intermediate membrane. A chamber is formed.

  When the weight of the user acts on the support cell, the fluid moves from the compressed fluid chamber of the support cell to the expansion / contraction auxiliary chamber of the auxiliary cell, and the compression deformation of the support cell is allowed quickly and with a large stroke. . On the other hand, when the load acting on the support cell is reduced or released, the intermediate film of the auxiliary cell is displaced toward the expansion / contraction auxiliary chamber side by the elasticity of the elastic means, so that the fluid chamber of the support cell from the expansion / contraction auxiliary chamber of the auxiliary cell. Thus, the fluid moves quickly, and the amount of compressive deformation of the support cell can be quickly reduced.

  In such a structure of Patent Document 1, since the fluid chamber of the support cell and the expansion / contraction auxiliary chamber of the auxiliary cell communicated with each other are a space sealed against the atmosphere, the expansion / contraction deformation of the support cell is prevented. The characteristic (cushion characteristic) may be preset in such a manner that it cannot be arbitrarily changed based on the spring characteristic of the elastic means of the auxiliary cell or the internal pressure of the expansion / contraction auxiliary chamber of the auxiliary cell.

  However, for example, depending on the user's preference for the hardness of the body pressure support cushion, the difference in the user's weight, the temperature of the use environment, the difference in the atmospheric pressure, etc. In some cases, it was required to be able to be adjusted during and after use.

JP 2017-51549 A

  The present invention has been made in the background of the above-mentioned circumstances, and the problem to be solved is that an excellent body pressure dispersion effect can be realized with a simple structure, and the cushion characteristics of the support cell can be easily adjusted. It is an object of the present invention to provide a body pressure support cushion having a novel structure that can be made.

  The present invention also includes a support cell having a fluid chamber therein, an auxiliary cell having an expansion / contraction auxiliary chamber and an action chamber for accommodating an elastic body on both sides of a working film disposed therein, a fluid chamber, and an expansion / contraction auxiliary chamber. It is another object of the present invention to provide a method for manufacturing a body pressure support cushion that is integrally formed with a communicating passage that communicates therewith.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  That is, the first aspect of the present invention is a body pressure support cushion, which is provided with a fluid chamber therein and is capable of expansion / contraction deformation, and an expansion / contraction auxiliary chamber communicated with the fluid chamber of the support cell. An auxiliary cell provided inside, a working chamber formed on the opposite side of the auxiliary cell across the flexible working membrane with respect to the expansion / contraction auxiliary chamber, and elasticity accommodated in the working chamber of the auxiliary cell A body, an atmosphere opening hole that opens the working chamber of the auxiliary cell to the atmosphere, a pressure adjusting port that enables supply and discharge of fluid to and from the expansion / contraction auxiliary chamber of the auxiliary cell, and the pressure adjusting port in communication with each other And a plug member that switches to the shut-off state.

  According to the body pressure support cushion having the structure according to the first aspect, fluid such as air can be supplied to or discharged from the expansion / contraction auxiliary chamber of the auxiliary cell through the pressure adjusting port. The deformation characteristics of the working film in the auxiliary cell can be easily changed by adjusting the amount of compressive deformation of the elastic body of the working chamber by adjusting the internal pressure of the working chamber. As a result, when the support cell is compressed, for example, when a person is placed on the support cell, the fluid flow characteristics between the fluid chamber of the support cell and the expansion / contraction auxiliary chamber of the auxiliary cell correspond to the deformation characteristics of the working film. Since the cushion characteristics such as the degree of deformation with respect to the input of the support cell are adjusted, better sleeping comfort and the like are realized.

  Furthermore, since the auxiliary cell has a structure including the expansion / contraction auxiliary chamber and the action chamber with the working membrane interposed therebetween, the fluid is supplied to or discharged from the expansion / contraction auxiliary chamber communicated with the fluid chamber of the support cell. A change in the volume ratio between the expansion / contraction assisting chamber and the working chamber occurs. Therefore, it is possible to suppress a change in the shape of the support cell while realizing a change in the deformation characteristics of the support cell by adjusting the amount of pre-compression of the elastic body in the working chamber. As a result, when obtaining a hard cushion characteristic, the support cell can be prevented from excessively expanding and deforming in the initial shape to prevent the upper surface of the support cell from being rounded, and when obtaining a soft cushion characteristic, It is possible to prevent the support cell from being crushed excessively in the initial shape and reducing the deformation stroke of the support cell.

  Further, since the amount of fluid accommodated in the fluid chamber of the support cell and the expansion / contraction auxiliary chamber of the auxiliary cell can be appropriately changed by the pressure adjusting port, for example, according to the weight and preference of the user, the support cell The hardness of the support cell can be appropriately adjusted with respect to the expansion and contraction of the fluid in the fluid chamber due to changes in the use environment such as atmospheric pressure and temperature.

  According to a second aspect of the present invention, in the body pressure support cushion described in the first aspect, the pressure adjusting port is provided in the auxiliary cell.

  According to the second aspect, the pressure adjusting port communicates directly with the expansion / contraction auxiliary chamber of the auxiliary cell without passing through the fluid chamber of the support cell, so that the change due to the supply or discharge of the fluid through the pressure adjusting port is performed. It is produced efficiently in the auxiliary cell. Therefore, the supply or discharge of the fluid to the expansion / contraction auxiliary chamber through the pressure adjusting port effectively realizes the adjustment of the cushion characteristic of the support cell by changing the spring of the auxiliary cell, and the support cell by the supply or discharge of the fluid. Such as deformation is reduced.

  A third aspect of the present invention is the body pressure support cushion described in the first or second aspect, wherein the auxiliary cells are overlapped with each other between the overlapping surfaces of the first sheet and the second sheet. The working film has a structure in which the working chamber is formed between the first sheet and the working film, and the expansion / contraction assistance is provided between the second sheet and the working film. While the chamber is formed, the second sheet and the working film are provided with fixing pieces that are overlapped and fixed to each other so as to extend outward, and the fixing pieces of the second sheet and A pressure adjusting passage communicating with the expansion / contraction auxiliary chamber is formed between the overlapping surfaces of the working film and the fixing piece, and the pressure adjusting port is the fixing piece of the second sheet or the action. The pressure adjusting port is provided through the pressure adjusting passage to the expansion / contraction auxiliary chamber. It is what is passed.

  According to the third aspect, since the auxiliary cell has a structure in which the first sheet, the second sheet, and the working film are overlapped, the working chamber and the expansion / contraction auxiliary chamber are provided on both sides of the working film. An auxiliary cell having a structure can be easily formed.

  Furthermore, by providing the pressure adjusting port on the fixing piece extending outside the auxiliary cell, fluid can be supplied to and discharged from the auxiliary cell expansion / contraction auxiliary chamber without passing through the fluid chamber of the support cell. However, when the user is placed on the auxiliary cell, the pressure adjusting port is provided away from the portion of the auxiliary cell on which the user can be placed, so that contact with the user's pressure adjusting port is avoided and foreign matter is avoided. A feeling or the like can be avoided.

  According to a fourth aspect of the present invention, in the body pressure support cushion described in any one of the first to third aspects, the elastic body can be put into and out of the working chamber. .

  According to the fourth aspect, for example, by changing to an elastic body having a different spring characteristic or the like, the deformation characteristic of the action film with respect to the internal pressure change of the expansion / contraction auxiliary chamber can be greatly changed, and the cushion characteristic of the support cell can be further increased. It can be adjusted with a large change width. Therefore, for example, by selecting an elastic body accommodated in the working chamber, the fluid is supplied to or discharged from the expansion / contraction auxiliary chamber of the auxiliary cell through the pressure adjusting port after roughly setting the cushion characteristics of the support cell. Thus, the cushion characteristics of the support cell can be finely adjusted.

  According to a fifth aspect of the present invention, a support cell and an auxiliary cell are integrally formed by a first sheet and a second sheet that are overlapped with each other, and the support cell includes the first sheet and the second sheet. The auxiliary cell has a fluid chamber that can be deformed and expanded between the overlapping surfaces of the two sheets, while the auxiliary cell has a flexible working film between the overlapping surfaces of the first sheet and the second sheet. An action chamber is formed between the first sheet and the action film, and an elastic body that is elastically deformable between the first sheet and the action film is arranged in the action chamber. And an expansion / contraction assisting chamber is formed between the second sheet and the working film, and between the overlapping surfaces of the first sheet and the second sheet, the support cell Manufacturing method of body pressure support cushion in which a communication passage is formed to communicate the fluid chamber and the expansion / contraction auxiliary chamber of the auxiliary cell with each other And forming the working chamber of the auxiliary cell containing the elastic body by overlapping and welding the outer peripheral portion of the working film to the first sheet, and welding the working film The second sheet is overlapped and welded to the first sheet to form the fluid chamber of the support cell and the expansion / contraction auxiliary chamber of the auxiliary cell, and the first sheet, the working film, and the Forming the communication path by a non-welded portion with the second sheet.

  According to the method for manufacturing a body pressure support cushion according to the fifth aspect, the support cell and the auxiliary cell can be integrally formed. In addition, after the working chamber is formed by welding the first sheet and the working film to each other, the first sheet, the working film and the second sheet are welded to each other except the portion where the communication path is formed. Thus, the expansion / contraction assisting chamber and the communication path can be formed at the same time, and the communication path can be formed integrally between the support cell and the auxiliary cell.

  According to the present invention, by providing the pressure adjusting port connected to the expansion / contraction auxiliary chamber of the auxiliary cell, fluid such as air can be supplied to or discharged from the expansion / contraction auxiliary chamber. By adjusting the compression amount of the elastic body accommodated in the working chamber, the deformation characteristics of the working membrane in the auxiliary cell can be easily changed, and the cushion characteristics such as the degree of deformation with respect to the input of the support cell can be adjusted. can do. Further, the auxiliary cell has a structure including an expansion / contraction auxiliary chamber and a working chamber with the working membrane being separated, and the ratio of the volume of the expansion / contraction auxiliary chamber and the working chamber in the auxiliary cell at the time of supplying or discharging the fluid to the expansion / contraction auxiliary chamber. Since the change occurs, it is possible to suppress the change in the shape of the support cell while realizing the change in the deformation characteristics of the support cell. In addition, the amount of fluid accommodated in the fluid chamber of the support cell and the expansion / contraction auxiliary chamber of the auxiliary cell can be appropriately changed by the pressure adjusting port, so that it can respond to, for example, the user's weight and the difference in cushion characteristics It is possible to cope with differences in the usage environment such as atmospheric pressure and temperature.

The perspective view which shows the fluid cell type mattress as 1st embodiment of this invention. The perspective view which shows the fluid cell type mattress shown in FIG. 1 at another angle. The top view of the fluid cell type mattress shown in FIG. The bottom view of the fluid cell type mattress shown in FIG. It is sectional drawing which expands and shows the principal part of the fluid cell type mattress of FIG. 1, Comprising: The figure corresponded in the VV cross section of FIG. The top view which expands and shows the principal part of the fluid cell type mattress shown in FIG. VII-VII sectional drawing of FIG. VIII-VIII sectional drawing of FIG. It is sectional drawing which expands and shows the principal part of the fluid cell type mattress of FIG. 1, Comprising: The figure which shows the state which supplied air from the pressure regulation opening | mouth. It is sectional drawing which shows the principal part of the fluid cell type mattress shown in FIG. 1 in a use condition, (a) is the non-input state of the load with respect to a support cell, (b) is the input state of the load with respect to a support cell, respectively. Show. Sectional drawing which shows the principal part of the fluid cell type mattress as another one Embodiment of this invention. The perspective view which shows the auxiliary | assistant cell which comprises the fluid cell type mattress as another one Embodiment of this invention. The front view which shows the principal part of the fluid cell type mattress as another embodiment of this invention. The perspective view which shows the auxiliary | assistant cell which comprises the fluid cell type mattress as another one Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  1-4, a fluid cell mattress 10 (hereinafter, mattress 10) is shown as a first embodiment of a body pressure support cushion having a structure according to the present invention. The mattress 10 includes a plurality of support cells 12 and a plurality of auxiliary cells 14 disposed on the left and right sides of the support cells 12. In the following description, the up-down direction is the vertical direction in FIG. 3 which is the vertical up-down direction when the mattress 10 is used, and the left-right direction is the left-right direction in FIG. Means the vertical direction of FIG. 3 which is the length direction of the mattress 10, respectively.

  More specifically, as shown in FIG. 5, the support cell 12 includes a pressure receiving fluid chamber 20 as a fluid chamber between an upper outer membrane 16 and a lower outer membrane 18 formed of a flexible membrane such as a synthetic resin. It has a hollow structure. In the present embodiment, the upper outer membrane 16 has a reverse concave shape that opens downward, and the lower outer membrane 18 has a concave shape that opens upward. The pressure receiving fluid chamber 20 is formed between the upper outer membrane 16 and the lower outer membrane 18 by the opening portions of the membrane 18 being abutted with each other. The pressure receiving fluid chamber 20 contains a support elastic body 22. In this embodiment, the support elastic body 22 is a substantially parallelepiped, and is preferably a porous elastic body having open cells, and is formed of, for example, a foamed urethane foam having a high foaming rate.

  The support cell 12 can be deformed in the vertical direction by allowing the deformation of the upper outer film 16 and the lower outer film 18 to be permitted by the inflow and discharge of air into the pressure receiving fluid chamber 20 and the elastic deformation of the support elastic body 22. Has been. Note that the fluid in the pressure receiving fluid chamber 20 may be a gas other than air or a liquid, but is preferably a compressible fluid, which is more shocking due to the compressibility of the fluid. The cushioning property at the time of loading can be improved, and the acting force on the upper and lower outer films 16 and 18 at the time of loading can be reduced by the compressibility of the fluid, so that the durability and load bearing performance can be improved. In the present embodiment, the fluid in the pressure receiving fluid chamber 20 is air.

  As shown in FIGS. 1 to 4, a plurality of support cells 12 having such a structure are arranged side by side in the front-rear direction and the left-right direction in the mattress 10. In the mattress 10 of the present embodiment, 189 support cells 12 are arranged in 21 rows in the front-rear direction and 9 rows in the left-right direction. However, since the mattress 10 of the present embodiment is formed by combining the divided bodies 24, 24, 24 divided into three in the front-rear direction, the row and the left and right sides constituting each divided body 24 are arranged in seven rows. 63 support cells 12 arranged in 9 rows in the direction are integrally formed. The 63 support cells 12 constituting the divided body 24 are integrally formed as a first sheet 78 to be described later with their upper and outer membranes 16 connected to each other, and their lower outer membranes 18 are mutually connected. And is integrally formed as a second sheet 80 to be described later.

  Further, the support cells 12 and 12 arranged adjacent to each other in each divided body 24 are arranged apart from each other at a predetermined interval as shown in FIGS. The lattice-shaped upper overlapping portion 26 that is continuous with the lower end of 16 and the lattice-shaped upper overlapping portion 28 that is continuous with the upper end of the lower outer membrane 18 of each support cell 12 are mutually connected between the adjacent support cells 12 and 12. It is overlapped and welded. As a result, each support cell 12 is positioned at a predetermined relative position by the upper overlap portion 26 and the lower overlap portion 28, and is allowed to tilt and displace due to deformation of the upper overlap portion 26 and the lower overlap portion 28. .

  Note that the width of the upper and lower overlapping portions 26 and 28 is preferably 3 mm or more from the viewpoint of ease of welding and ensuring the reliability of welding, and between the support cell 12 and the auxiliary cell 14. In order to prevent the distance (interval) from becoming excessively large and to form the upper surface of the mattress 10 without a sense of incongruity, it is desirable that the distance is set to 15 mm or less.

  Furthermore, the width dimension of the regions welded to each other in the upper and lower overlapping parts 26 and 28 is preferably 20% or more and 80% or less of the width dimension of the upper and lower overlapping parts 26 and 28. If the width of the region to be covered and welded is less than 20% with respect to the width dimension of the upper and lower overlapping portions 26, 28, the durability and reliability of welding may not be sufficiently secured, If it exceeds 80%, it becomes difficult to stably secure the substantial width dimension of the welded region due to an error in the relative position in the surface direction of the upper overlap portion 26 and the lower overlap portion 28. This is because problems such as the above may occur. Note that the area to be welded is desirably set at the center in the left-right direction of the upper and lower overlapping portions 26 and 28, thereby allowing errors in the relative positions of the upper and lower overlapping portions 26 and 28, welding positions, and the like. It becomes easy. Further, in order to ensure a sufficient welding area of the upper and lower overlapping portions 26 and 28, the relative positional deviation between the upper and lower overlapping portions 26 and 28 in the surface direction is preferably that of the upper and lower overlapping portions 26 and 28. The width is less than 20%, more preferably less than 10%.

  Furthermore, as shown in FIGS. 5 to 8, an upper concave groove 30 that opens to the lower surface and extends linearly to the left and right is formed in a portion located between the support cells 12, 12 adjacent to the left and right in the upper overlap portion 26. In the lower overlap portion 28, a lower concave groove 32 that opens to the upper surface and extends linearly to the left and right is formed in a portion that is formed between the support cells 12 and 12 that are adjacent to the left and right in the lower overlap portion 28. Then, in a state where the upper overlapping portion 26 and the lower overlapping portion 28 are overlapped, the lower surface opening of the upper concave groove 30 and the upper surface opening of the lower concave groove 32 are abutted with each other. A support cell communication path 34 extending left and right is formed between the overlapping surfaces. Both ends of the support cell communication path 34 communicate with the pressure receiving fluid chamber 20 of the support cell 12, and the pressure receiving fluid chambers 20, 20 of the support cells 12, 12 adjacent to the left and right communicate with each other through the support cell communication path 34. Has been. In the present embodiment, the pressure receiving fluid chambers 20 of the nine support cells 12 arranged side by side are connected to each other by the support cell communication passage 34. The passage cross-sectional area, the passage length, the passage cross-sectional shape, etc. of the support cell communication passage 34 can be changed according to required characteristics.

  On the other hand, auxiliary cells 14 are disposed on the left and right outer sides of the support cells 12 located at both ends in the left-right direction. The auxiliary cell 14 has a structure in which a flexible working film 40 is disposed between an upper outer film 36 and a lower outer film 38 formed of a flexible synthetic resin film. The working chamber 42 is formed between the membrane 36 and the working membrane 40, and the expansion / contraction auxiliary chamber 44 is formed between the working membrane 40 and the lower outer membrane 38. Note that air is accommodated in each of the working chamber 42 and the expansion / contraction assisting chamber 44 of the present embodiment. For example, in the expansion / contraction assisting chamber 44, as with the pressure receiving fluid chamber 20 of the support cell 12, Liquids and the like can also be accommodated. Further, the upper outer membrane 36 of the auxiliary cell 14 is integrally formed with the upper outer membrane 16 of the support cell 12 and is provided on a first sheet 78 (described later), and the lower outer membrane 38 of the auxiliary cell 14 is provided. The support cell 12 is integrally formed with the lower outer membrane 18 and provided on a second sheet 80 (described later).

  Furthermore, the working chamber 42 provided on the opposite side of the expansion / contraction auxiliary chamber 44 with the working film 40 interposed therebetween has a working elastic body as an elastic body that can be elastically deformed between the working film 40 and the lower outer film 38. 46 is accommodated. The action elastic body 46 is a foamed elastic body formed of the same material as that of the support elastic body 22 of the support cell 12. In the present embodiment, the action elastic body 46 is a substantially parallelepiped like the support elastic body 22. The working elastic body 46 may be a non-foamed elastic body, like the supporting elastic body 22.

  Furthermore, the upper outer membrane 36 of the auxiliary cell 14 constituting the wall portion of the working chamber 42 is formed with an atmosphere opening hole 48 penetrating vertically, and the working chamber 42 of the auxiliary cell 14 passes through the atmosphere opening hole 48. Open to the atmosphere. In the present embodiment, the air opening holes 48 are formed through the four corners of the upper wall portion of the upper outer film 36, but may be formed through the center of the upper wall portion of the upper outer film 36, for example. Furthermore, the hole cross-sectional shape and the hole cross-sectional area of the air opening hole 48 are not particularly limited, and are appropriately set according to the required cushioning characteristics of the support cell 12 and the like.

  As shown in FIGS. 1 to 4, the auxiliary cell 14 is disposed on the left and right outer sides of the nine support cells 12 arranged side by side, and the upper outer membrane 36 of the auxiliary cell 14 is the upper outer membrane 16 of the support cell 12. And the lower outer membrane 38 of the auxiliary cell 14 is integrally formed with the lower outer membrane 18 of the support cell 12, thereby being integrally formed with the support cell 12. A plurality of auxiliary cells 14 are arranged in the front-rear direction of the mattress 10, and in this embodiment, seven rows of support cells 12 are integrally formed in the front-rear direction in each divided body 24. The left and right auxiliary cells 14 are integrally formed side by side in the front-rear direction. In the present embodiment, the auxiliary cells 14 are disposed at the left and right ends of the mattress 10, but may be disposed, for example, only at either the left or right end, or at the ends in the front-rear direction. You may arrange | position along with the left-right direction.

  Furthermore, in each divided body 24, the upper outer film 36 of the auxiliary cell 14 is integrally formed with an upper overlapping portion 50 extending from the lower end to the periphery as shown in FIGS. The outer film 38 is integrally formed with a lower overlapping portion 52 that extends from the upper end to the periphery. The upper overlapping portion 50 and the lower overlapping portion 52 are overlapped and welded to each other, and the auxiliary cell 14 and the support cell 12 adjacent to each other on the left and right are connected to each other by the upper overlapping portion 50 and the lower overlapping portion 52. At the same time, the auxiliary cells 14, 14 adjacent to each other in the front-rear direction are connected to each other by the upper overlapping portion 50 and the lower overlapping portion 52. Thus, the auxiliary cells 14 and the support cells 12 that are adjacent in the left-right direction and the auxiliary cells 14 and 14 that are adjacent in the front-rear direction are disposed with the upper overlap portion 50 and the lower overlap portion 52 interposed therebetween, respectively. They are spaced apart at a predetermined interval.

  Furthermore, as shown in FIGS. 5 to 8, a lower concave groove 54 that opens to the upper surface and linearly extends to the left and right is formed in a portion of the lower overlap portion 52 located between the auxiliary cell 14 and the support cell 12. In the state where the upper overlap portion 50 and the lower overlap portion 52 are overlapped, the upper surface opening of the lower concave groove 54 is covered with the upper overlap portion 50, and the overlap surface of the upper overlap portion 50 and the lower overlap portion 52 is covered. An auxiliary cell communication path 56 is formed as a communication path extending left and right. The auxiliary cell communication passage 56 has one end on the left and right connected to the pressure receiving fluid chamber 20 of the support cell 12 and the other end on the left and right connected to the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14. The pressure receiving fluid chamber 20 and the expansion / contraction auxiliary chamber 44 are communicated with each other through the auxiliary cell communication passage 56. The passage cross-sectional area, passage length, passage cross-sectional shape, etc. of the auxiliary cell communication passage 56 can be changed according to required characteristics, etc., but in this embodiment, it has a substantially semicircular passage cross-sectional shape. The cross-sectional area of the passage is made smaller than that of the support cell communication passage 34.

  In addition, the portions located on the left and right outsides of the auxiliary cell 14 in the upper overlapping portion 50 and the lower overlapping portion 52 are upper and lower fixing pieces 58 and 60. The upper and lower fixing pieces 58 and 60 extend from the upper outer film 36 and the lower outer film 38 to the left and right outside as compared with the other parts of the upper overlapping part 50 and the lower overlapping part 52, and are overlapped vertically. While being welded, the portions corresponding to the front and rear centers of the auxiliary cells 14 are non-adhering regions 62 that are overlapped with each other without being fixed to each other. The non-adhesion region 62 extends in the left-right direction, and one of the left and right ends reaches the inner peripheral end of the upper and lower overlapping portions 50, 52, which are the butted portions of the upper and lower outer films 36, 38. The other end portion is closed without reaching the outer peripheral ends of the upper and lower overlapping portions 50 and 52.

  Furthermore, between the upper and lower fixing pieces 58 and 60, the fixing piece 63 provided on the outer peripheral end portion of the working film 40 is arranged in a state of being sandwiched between the upper and lower sides. The fixing piece 63 is welded in its entirety in the front-rear direction to the upper fixing piece 58, while it is welded to the lower fixing piece 60 at a portion outside the non-adhering region 62. In the non-fixed region 62, they are overlapped without being welded. Thereby, the space between the upper and lower fixing pieces 58, 60 in the non-adhesion region 62 is communicated with the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 through the space between the lower fixing piece 60 and the intermediate fixing piece 63. 66 is constituted.

  Furthermore, a pressure adjusting port 64 is provided in the fixing piece 60 of the lower overlapping portion 52 in the auxiliary cell 14. The pressure adjusting port 64 has a cylindrical shape as a whole, and is provided so as to penetrate the fixing piece 60 of the lower overlap portion 52 and protrude downward from the fixing piece 60, and the upper end portion of the pressure adjusting port 64. Is fixed to the non-fixed region 62 of the fixed piece 60. The inner hole of the pressure adjusting port 64 is communicated with a pressure adjusting passage 66 formed between the fixed piece 58 of the upper overlapped portion 50 and the fixed piece 60 of the lower overlapped portion 52 in the non-fixed region 62. The pressure adjusting passage 66 is closed at one end by welding of the fixing pieces 58 and 60, and the other end communicates with the expansion / contraction auxiliary chamber 44. It communicates with the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 via the pressure passage 66. Therefore, the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 can be opened to the atmosphere through the pressure adjusting passage 66 and the pressure adjusting port 64, and a pump 76 and the like are connected to the pressure adjusting port 64 as shown in FIG. By doing so, it is also possible to actively supply or discharge air. The pressure adjusting port 64 is preferably a soft member formed of a soft synthetic resin or a rubber elastic body, so that the user on the mattress 10 should touch the pressure adjusting port 64 by any chance. Even troubles such as feeling pain can be avoided.

  Further, as shown in FIG. 5, the lower opening of the inner hole of the pressure adjusting port 64 located on the side opposite to the pressure adjusting passage 66 can be closed by a plug body 68 as a plug member. The connection state to the outside and the blocking state can be switched by attaching / detaching the plug body 68 to / from the opening of the pressure adjusting port 64. The plug body 68 is, for example, a small-diameter column that can be inserted into the inner hole of the pressure adjusting port 64 and has a flange-shaped flange at the lower end so that the amount of insertion into the pressure adjusting port 64 is limited. It has become. The plug body 68 may be a separate body from the pressure adjusting port 64, but for example, as shown in FIG. 5, the collar of the plug body 68 and the outer peripheral surface of the pressure adjusting port 64 are connected flexibly. The parts 70 may be connected to each other, and a structure such as an air plug provided in a floating ring or the like may be applied to the pressure adjusting port 64 and the plug body 68. In the present embodiment, the fixing pieces 58 and 60 are formed only in the upper overlap portion 50 and the lower overlap portion 52 provided in either the left or right auxiliary cell 14, and the pressure adjusting port 64 and the pressure adjusting passage 66 are formed. However, the pressure adjusting port 64 and the pressure adjusting passage 66 may be provided in the auxiliary cells 14 on both the left and right sides.

  The mattress 10 including the support cell 12 and the auxiliary cell 14 having such a structure is used in a state of being laid on the support surface 74 of the bed 72 as shown in FIG. The three divided bodies 24, 24, 24 constituting the mattress 10 may be arranged on the support surface 74 of the bed 72 in a state of being fixed to each other in advance, or may be unfixed to each other and the bed 72. The support surfaces 74 may be arranged side by side. Further, the mattress 10 may be used in a state where the surface is covered with, for example, a cloth sheet or cover, and adhesion of dirt to the mattress 10 can be avoided. In FIG. 10, the pressure adjusting port 64 and the pressure adjusting passage 66 are not shown.

  When the user rests on the mattress 10 laid on the bed 72 and lies down, the support cells 12 that support the weight of the user are compressed up and down as shown in FIG. The air in the twelve pressure receiving fluid chambers 20 moves to the pressure receiving fluid chamber 20 of another supporting cell 12 connected by the supporting cell communication path 34. As a result, the repulsive force of the compressed support cell 12 is reduced, and the support cell 12 around the compressed support cell 12 extends to come into contact with the user and support the user in a wider area. Will come to be. As a result, the body pressure of the user can be dispersed, and a good sleeping comfort and pressure ulcer prevention can be achieved. Note that FIG. 10 is a schematic diagram only, and does not specifically show the modification of the cells 12 and 14.

  In addition, since the pressure receiving fluid chamber 20 of the support cell 12 is connected to the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 by the auxiliary cell communication path 56, the pressure receiving fluid chamber 20 of the support cell 12 is compressed when the support cell 12 is compressed. From the air to the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14. Thereby, the compression deformation of the support cell 12 that supports the user is allowed with a larger stroke and quickly, and the surface pressure (body pressure) of the contact surface between the support cell 12 and the user is more advantageously reduced. .

  Furthermore, since the auxiliary cell 14 has a structure in which the working chamber 42 is formed on the opposite side of the expansion / contraction auxiliary chamber 44 with the action film 40 interposed therebetween, air is supplied from the support cell 12 to the expansion / contraction auxiliary chamber 44. When the internal pressure of the expansion / contraction assisting chamber 44 increases and the working film 40 is pushed into the working chamber 42 side, the volume of the expansion / contraction assisting chamber 44 increases and the volume of the working chamber 42 decreases. Thereby, the auxiliary cell 14 can sufficiently allow the inflow of air from the support cell 12 while avoiding a significant change in the outer shape. The action chamber 42 accommodates the action elastic body 46, and the deformation characteristic of the action film 40 is set according to the spring characteristic of the action elastic body 46. Therefore, the spring characteristic of the action elastic body 46 is appropriately set. The cushion characteristic of the support cell 12 can also be adjusted by selecting this.

  In the present embodiment, the passage cross-sectional area of the support cell communication passage 34 that communicates the pressure receiving fluid chambers 20, 20 of the support cells 12, 12 adjacent to each other is the pressure receiving fluid chamber of the support cell 12 and the auxiliary cell 14 adjacent to each other. 20 and the passage cross-sectional area of the auxiliary cell communication passage 56 that communicates the expansion / contraction auxiliary chamber 44 with each other. Therefore, the amount of air movement between the support cells 12 and 12 is larger than the amount of air movement between the support cell 12 and the auxiliary cell 14, and the expansion and contraction of the support cell 12 occurs preferentially. As a result, the upper surface of the support cell 12 is quickly deformed into a shape along the user's body surface, and dispersion of body pressure is effectively realized.

  Further, when the compressive load acting on the support cell 12 is released due to the user disappearing from the mattress 10 or the like, the shape elastic property of the support elastic body 22 accommodated in the pressure receiving fluid chamber 20 of the support cell 12 is released. The support cell 12 compressed vertically is extended vertically. Along with this, the pressure receiving fluid chamber 20 of the support cell 12 is depressurized, so that air flows from the pressure receiving fluid chamber 20 of the other support cell 12 and the expansion / contraction assisting chamber 44 of the auxiliary cell 14. As a result, the support cell 12 is quickly restored to the initial shape before compression deformation by releasing the compressive load, and the unevenness on the upper surface of the mattress 10 is eliminated. Problems such as sticking are avoided.

  Further, when the user moves on the mattress 10 due to turning over or the like, and the action position of the weight of the user changes on the mattress 10, the pressure received by the plurality of support cells 12 communicated by the support cell communication path 34. As the air moves between the fluid chambers 20, each support cell 12 is expanded or contracted according to the magnitude of the applied load. Thereby, even after the user moves, the state in which the user is supported in a wide area by the support cell 12 is maintained, and the body pressure is dispersed.

  In addition, the mattress 10 is, for example, blown in air from the pressure adjusting port 64, or is attached with a pump 76 to the pressure adjusting port 64 as shown in FIG. It is possible to increase the internal pressure of the expansion / contraction assisting chamber 44 by sending air to 44. Thereby, the action film 40 of the auxiliary cell 14 is pushed to the action chamber 42 side, and the action elastic body 46 in the action chamber 42 is compressed up and down. As a result, the allowable amount of further compressive deformation of the working elastic body 46 is reduced, and the expansion rate of the volume of the expansion / contraction auxiliary chamber 44 is reduced. Therefore, when the compression load is applied to the support cell 12, the support cell 12. The amount of air that can flow from the pressure receiving fluid chamber 20 into the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 is reduced. Therefore, the support cell 12 is hardly deformed, and the cushion characteristic of the support cell 12 is hardened.

  On the other hand, by compressing the auxiliary cell 14 with the pressure adjusting port 64 open to the atmosphere, or sucking out air by the pump 76 connected to the pressure adjusting port 64, the air is discharged from the expansion / contraction auxiliary chamber 44 in the auxiliary cell 14 to the outside. By discharging, the internal pressure of the expansion / contraction auxiliary chamber 44 can be lowered. Thereby, excess air accommodated in the expansion / contraction auxiliary chamber 44 can be discharged, and when a compressive load acts on the support cell 12, the expansion / contraction auxiliary chamber of the auxiliary cell 14 from the pressure receiving fluid chamber 20 of the support cell 12. Since the inflow of air to 44 is more efficiently generated and the support cell 12 is easily deformed, the cushion characteristic of the support cell 12 is softened.

  As described above, the mattress 10 can adjust the deformation characteristics of the working film 40 in the auxiliary cell 14 by supplying and discharging air through the pressure adjusting port 64, thereby receiving the pressure of the support cell 12. The fluid flow characteristic between the fluid chamber 20 and the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 can be adjusted, and the cushion characteristic of the support cell 12 can be adjusted. Moreover, compared to the case where the internal pressure of the support cell 12 is adjusted to adjust the cushion characteristics of the support cell 12, the change in the initial shape of the support cell 12 due to the change in the internal pressure of the pressure receiving fluid chamber 20 is suppressed, and It may be difficult to reduce the contact area to the user or to have a bottom.

  The space required for storage or transportation is provided by discharging air from the pressure receiving fluid chamber 20 of the support cell 12 and the expansion / contraction assisting chamber 44 of the auxiliary cell 14 from the pressure adjusting port 64 to deform the mattress 10 thinly. Can be reduced.

  The pressure adjusting port 64 is communicated with the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 through a pressure adjusting passage 66 formed by using the non-adhesion regions 62 of the upper and lower adhering pieces 58 and 60. 14 is arranged away from the left and right outer sides with respect to the upper and lower outer membranes 36, 38, so that it is difficult for the user to contact the pressure adjusting port 64, and the user feels uncomfortable or painful due to the contact with the pressure adjusting port 64. It is hard to give to the person.

  Further, the pressure adjusting port 64 communicates with the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 without passing through the pressure receiving fluid chamber 20 of the support cell 12, and supply and discharge of air through the pressure adjusting port 64 is performed by the expansion / contraction auxiliary chamber 44. Therefore, the deformation characteristics of the working film 40 in the auxiliary cell 14 can be effectively adjusted.

  By the way, the mattress 10 of this embodiment can be manufactured by the manufacturing method which has the following each process, for example.

  That is, first, the first sheet 78 that integrally includes the upper outer film 16 of the support cell 12, the upper outer film 36 of the auxiliary cell 14, the upper overlapping portions 26 and 50, and the upper fixing piece 58. A second sheet 80 that is prepared and integrally includes the lower outer membrane 18 of the support cell 12, the lower outer membrane 38 of the auxiliary cell 14, the lower overlapping portions 28 and 52, and the lower fixing piece 60. Prepare. The first sheet 78 and the second sheet 80 have substantially the same structure as a whole, while an air opening hole 48 is formed in a portion constituting the upper outer film 36 of the first sheet 78. In addition, the pressure adjusting port 64 is provided after being fixed to the second sheet 80.

  Further, the working film 40 is prepared separately from the first sheet 78 and the second sheet 80. Furthermore, the support elastic body 22 of the support cell 12 and the action elastic body 46 of the auxiliary cell 14 are prepared.

  Then, the action elastic body 46 is inserted into the concave portion forming the upper outer film 36 of the auxiliary cell 14 in the first sheet 78, and the action film 40 is overlaid so as to close the opening. The first sheet 78 is welded over the entire length. Thereby, the process of forming the working chamber 42 of the auxiliary cell 14 containing the working elastic body 46 between the first sheet 78 and the working film 40 is completed. The working elastic body 46 can be elastically deformed between the first sheet 78 and the working film 40.

  Next, the second sheet 80 is superposed on the first sheet 78 to which the working film 40 is welded, and the upper outer film 16 of the first sheet 78 and the lower outer film 18 of the second sheet 80 are formed. The support elastic body 22 is disposed therebetween, and the upper overlapping portions 26 and 50 of the first sheet 78 and the lower overlapping portions 28 and 52 of the second sheet 80 are welded. As a result, the plurality of support cells 12 are integrally formed by the first sheet 78 and the second sheet 80, and the pressure receiving fluid chamber 20 of the support cell 12 containing the support elastic body 22 is formed in the first sheet 78 and the second sheet 80. The auxiliary cell 14 is formed integrally with the support cell 12 by the first sheet 78 and the second sheet 80, and the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 is formed with the second sheet 80. The process of forming between the working films 40 is completed. As can be understood from the above, in the manufacturing method of the present embodiment, the support cell 12 including the pressure-receiving fluid chamber 20 and the auxiliary cell 14 including the working chamber 42 and the expansion / contraction auxiliary chamber 44 are integrally formed. Is done. The auxiliary cell 14 has a structure in which the working film 40 is disposed between the overlapping surfaces of the first sheet 78 and the second sheet 80, and three sheet-like members 78, 40, and 80 are vertically stacked. Has a structured. Furthermore, the second sheet 80 may be welded only to the first sheet 78, but may be welded to the outer peripheral portion of the working film 40.

  Here, the formation part of the support cell communication path 34 between the support cells 12 and 12 adjacent to each other in the left-right direction, and the formation of the auxiliary cell communication path 56 between the support cell 12 and the auxiliary cell 14 adjacent to each other in the left-right direction. The upper overlap portions 26 and 50 of the first sheet 78 and the lower overlap of the second sheet 80 are provided at portions where the portions and the non-adhesion regions 62 of the fixation pieces 58 and 60 constituting the pressure adjusting passage 66 are removed. The parts 28 and 52 are welded. In particular, in the portion where the auxiliary cell communication path 56 is formed, the outer peripheral portion of the working film 40 is in a state of being non-adheringly separated from the lower overlap portion 52 of the second sheet 80. Further, in the non-adhesion region 62, the adhering piece 58 of the first sheet 78 and the adhering piece 60 of the second sheet 80 are brought into a state of being non-adhering and being separated from each other. The piece 60 and the fixing piece 63 of the working film 40 are also non-fixed and overlapped so as to be separated from each other. In this way, the auxiliary cell communication passage 56 communicated with the expansion / contraction auxiliary chamber 44 by the non-welded portion by not welding the working film 40 and the second sheet 80 in the formation portion of the auxiliary cell communication passage 56 and the non-adhering region 62. The step of forming the pressure adjusting passage 66 with 56 is completed.

  According to the manufacturing method having such steps, not only the support cell 12 and the auxiliary cell 14 are integrally formed, but also the support cell communication path 34, the auxiliary cell communication path 56, and the pressure adjusting path 66 are provided to the support cell. 12 and the auxiliary cell 14 are formed integrally with each other, so that the divided body 24 of the mattress 10 can be easily manufactured with a small number of parts. In addition, after the first sheet 78 and the working film 40 are welded to form the working chamber 42, the first sheet 78, the working film 40 and the second sheet 80 are welded, and the pressure receiving fluid chamber 20 and the expansion / contraction assistance. By forming the chamber 44, the auxiliary cell communication path 56 can be easily formed by the first sheet 78 and the non-welded portion of the working film 40 and the second sheet 80.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, the pressure adjusting port 64 may be provided in the upper outer film 36 or the lower outer film 38 of the auxiliary cell 14. Further, the pressure adjusting port 64 may be provided in the support cell 12, and in that case, the pressure adjusting port 64 communicates with the expansion / contraction auxiliary chamber 44 of the auxiliary cell 14 via the pressure receiving fluid chamber 20.

  Furthermore, as long as the pressure adjusting port 64 communicates with the expansion / contraction auxiliary chamber 44, the pressure adjusting port 64 may not necessarily be provided in the second sheet 80, and may be provided in the working film 40, for example. Specifically, for example, in the auxiliary cell 82 shown in FIG. 11, the left and right dimensions of the fixing piece 58 of the first sheet 78 are made small, and the fixing piece 63 of the working film 40 is outside of the fixing piece 58 on the left and right sides. The fixing piece 63 of the working film 40 is welded to the fixing piece 60 of the second sheet 80, and a pressure adjusting passage 66 is formed between the fixing pieces 60, 63. The pressure adjusting port 64 of the auxiliary cell 82 is provided in the fixing piece 63 of the working film 40 and protrudes upward, and communicates with a pressure adjusting passage 66 formed between the fixing pieces 60 and 63.

  Further, the formation position and number of the air opening holes, the hole cross-sectional area, the hole shape, etc. are not particularly limited. Further, for example, as in the auxiliary cell 84 shown in FIG. 12, one relatively large atmosphere opening hole 86 is formed, and the action elastic body 46 can enter and leave the action chamber 42 through the atmosphere opening hole 86. It may be said. According to this, for example, depending on the required deformation characteristics of the working film 40, the spring characteristics and the like are different depending on the shape, size, material, etc., from a plurality of types of acting elastic bodies 46a, 46b, 46c. One can be selectively accommodated in the working chamber 42 to achieve the required characteristics. In particular, if the working elastic body 46 is replaced, the cushion characteristic of the support cell 12 is significantly changed as compared with the adjustment of the cushion characteristic of the support cell 12 by the introduction and removal of air into and from the expansion / contraction auxiliary chamber 44 by the pressure adjusting port 64. It becomes possible. It should be noted that the working elastic body 46 does not necessarily have to be inserted into and removed from the working chamber 42, and an opening / closing port that can be opened and closed may be provided separately from the air opening hole 86. 12 and 14 (described later), the auxiliary cells 84 and 92 are shown as a single unit, but the auxiliary cells 84 and 92 can also be integrally formed with the support cell 12 as in the first embodiment.

  In the above embodiment, the outer wall portion of the auxiliary cell 14 is constituted by the sheet-like upper outer membrane 36 and the lower outer membrane 38, respectively, but corresponds to the upper outer membrane 36 constituting the wall portion of the working chamber 42. The portion is not necessarily limited to a sheet shape. Specifically, for example, like the auxiliary cell 88 shown in FIG. 13, the upper half of the outer wall portion of the auxiliary cell 14 may be a mesh member 90 having a large number of meshes. An air opening hole for opening the air to the atmosphere is constituted by a mesh. Further, the portion corresponding to the upper outer membrane 36 constituting the wall portion of the working chamber 42 in the auxiliary cell may be any portion as long as the working elastic body 46 can be compressed between the working membrane 40. For example, the auxiliary cell shown in FIG. Like the cell 92, a portion corresponding to the upper outer film 36 can be constituted by the belt-like member 94.

  In the embodiment, the structure in which the support cell communication path 34 and the auxiliary cell communication path 56 are formed between the left and right of the support cell 12 and the auxiliary cell 14 is illustrated. Can also be provided with a communication path. Further, when at least one of the pressure-receiving fluid chambers 20 and 20 of the support cells 12 and 12 adjacent to the front and rear and the expansion and contraction auxiliary chambers 44 and 44 of the auxiliary cells 14 and 14 adjacent to the front and rear is communicated in the front-rear direction. In addition, it is not necessary to provide the pressure adjusting ports 64 in all of the auxiliary cells 14 arranged in the front-rear direction, and one pressure adjusting port 64 may enable supply and discharge of air and the like to the expansion / contraction auxiliary chamber 44 of the plurality of auxiliary cells 14.

  Further, the support cell communication path 34 and the auxiliary cell communication path 56 are not necessarily limited to a structure provided integrally with the support cell 12 and the auxiliary cell 14. For example, the support cell communication path 34 and the auxiliary cell communication path 56 are retrofitted to the support cell 12 and the auxiliary cell 14. The support cell communication path 34 and the auxiliary cell communication path 56 can also be configured by the inner holes of the separate tubes.

  Further, in the above embodiment, the support cell 12 is formed by abutting the openings of the upper outer membrane 16 and the lower outer membrane 18 each having a concave shape, and the auxiliary cells 14 each have a concave shape. The openings of the film 36 and the lower outer film 38 are formed to face each other. For example, the second sheet 80 including the lower outer films 18 and 38 is formed into a flat film shape, and the lower outer films 18 and 38 are flattened. It can also be made into a simple shape.

  In the embodiment, the support cell 12 and the auxiliary cell 14 are disposed on the entire support surface 74 of the bed 72. For example, the support cell 12 and the auxiliary cell 14 are provided on the support surface 74 of the bed 72. May be partially disposed. The fluid cell mattress may be made smaller than the support surface 74 of the bed 72 so that the fluid cell mattress is laid only on a part of the support surface 74 of the bed 72 in the front-rear direction. The fluid cell mattress may include a portion constituted by the support cell 12 and the auxiliary cell 14 and a portion constituted by a synthetic resin elastomer such as urethane foam.

  Furthermore, in the said embodiment, although the mattress 10 for beds was illustrated as an example of the body pressure support cushion which concerns on this invention, this invention is a cushion and pillow laid on the seat surface of a chair (a wheelchair is included), for example. The present invention can also be applied.

10: fluid cell mattress (body pressure support cushion), 12: support cell, 14, 82, 84, 88, 92: auxiliary cell, 20: pressure receiving fluid chamber (fluid chamber), 40: working membrane, 42: working chamber , 44: expansion / contraction auxiliary chamber, 46: action elastic body (elastic body), 48, 86: air release hole, 56: auxiliary cell communication path (communication path), 60, 63: fixing piece, 64: pressure adjusting port, 66 : Pressure adjusting passage, 68: Plug body (plug member), 78: First sheet, 80: Second sheet

Claims (5)

A support cell having a fluid chamber therein and capable of expansion and contraction;
An auxiliary cell provided therein with an expansion / contraction auxiliary chamber communicated with the fluid chamber of the support cell;
A working chamber formed on the opposite side of the auxiliary cell with the flexible working membrane sandwiched between the expansion and contraction auxiliary chamber;
An elastic body housed in the working chamber of the auxiliary cell;
An air opening hole for opening the working chamber of the auxiliary cell to the atmosphere;
A pressure adjusting port that enables supply and discharge of fluid to and from the expansion / contraction auxiliary chamber of the auxiliary cell;
A body pressure support cushion comprising: a plug member that switches the pressure adjusting port between a communication state and a blocking state.   The body pressure support cushion according to claim 1, wherein the pressure adjusting port is provided in the auxiliary cell. The auxiliary cell has a structure in which the action film is disposed between the overlapping surfaces of the first sheet and the second sheet on which the auxiliary cells are overlapped with each other, and the auxiliary cell is disposed between the first sheet and the action film. While the working chamber is formed, the expansion / contraction assisting chamber is formed between the second sheet and the working film,
The second sheet and the working film are provided with sticking pieces that are overlapped and fixed to each other so as to extend outward, the fixing pieces of the second sheet and the fixing pieces of the working film A pressure adjusting passage communicating with the expansion / contraction auxiliary chamber is formed between the overlapping surfaces of the second sheet, and the pressure adjusting port passes through the fixing piece of the second sheet or the fixing piece of the working film. The body pressure support cushion according to claim 1 or 2, wherein the pressure adjusting port is communicated with the expansion / contraction assisting chamber through the pressure adjusting passage.   The body pressure support cushion according to any one of claims 1 to 3, wherein the elastic body can be moved in and out of the working chamber. A support cell and an auxiliary cell are integrally formed by a first sheet and a second sheet that are overlapped with each other, and the support cell is located between the overlapping surfaces of the first sheet and the second sheet. The auxiliary cell is provided with a fluid chamber capable of expansion and contraction deformation, and the auxiliary cell includes a flexible working film disposed between the overlapping surfaces of the first sheet and the second sheet. An action chamber is formed between the action film, and an elastic body that is elastically deformable between the first sheet and the action film is disposed in the action chamber, and the second chamber An expansion / contraction auxiliary chamber is formed between the sheet and the working film,
A body pressure support cushion in which a communication path is formed between the overlapping surfaces of the first sheet and the second sheet so that the fluid chamber of the support cell and the expansion / contraction auxiliary chamber of the auxiliary cell communicate with each other. A manufacturing method of
Forming the working chamber of the auxiliary cell containing the elastic body by overlapping and welding the outer peripheral portion of the working film to the first sheet;
The first sheet on which the working film is welded is overlapped and welded to form the fluid chamber of the support cell and the expansion / contraction assisting chamber of the auxiliary cell, and the first sheet And a step of forming the communication path by a non-welded portion between the working membrane and the second sheet.

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