Cushion body, cushion body set, and relaxation device

Abstract

To provide a cushion body, cushion body set, and relaxation device which can be supported by a human body and includes an outer surface capable of responding by deformation of a plurality of fluid pressure actuators.SOLUTION: A cushion body can be supported by a human body. The cushion body includes: a cushion main body constituting an outer surface of the cushion body; and a plurality of fluid pressure actuators which are covered by the cushion main body and are individually deformable by pressure of a fluid. The outer surface of the cushion body can respond to deformation of the fluid pressure actuators.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cushion body, a cushion body set, and a relaxation device. [Background technology]

[0002] Conventionally, there have been known human body supports capable of supporting a human body, such as household furniture such as chairs, sofas, and beds, and various types of commercial beds. There are also known human body supports that have a function capable of controlling the force acting on the supported human body, such as massage chairs.

[0003] Patent Document 1 describes a bed hardness characteristic setting device. The bed hardness characteristic setting device described in Patent Document 1 includes a displacement amount detection unit that detects the amount of displacement that changes in response to the weight of a recumbent, and an actuator equipped with a force generation unit that applies a force to the recumbent. The actuator described in Patent Document 1 applies a force to the recumbent by multiplying a preset spring constant by the amount of displacement detected sequentially. The bed hardness characteristic setting device described in Patent Document 1 changes the spring constant of the actuator to a spring constant corresponding to the hardness change request when a hardness change request command is received from the recumbent. The bed hardness characteristic setting device described in Patent Document 1 also repeats a routine that sequentially determines the force of the actuator to be applied to the recumbent by multiplying the changed spring constant by the amount of displacement detected sequentially by a displacement sensor, and sequentially applies this force to the recumbent. When a hardness determination command is received from the recumbent while the force that sequentially changes in response to the displacement is being applied to the recumbent, the spring constant of the actuator at the time of receiving the hardness determination command is stored. In the actuator described in Patent Document 1, the spring constant can be changed by moving the coil against the elastic force of the leaf spring. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-056082 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a cushion body, a cushion body set, and a relaxation device that can be supported by the human body and has an outer surface that can respond to deformation of a plurality of fluid pressure actuators. [Means for solving the problem]

[0006] A cushion body according to a first aspect of the present invention comprises: (1) A cushion body that can be supported by a human body, a cushion body that forms an outer surface of the cushion body; a plurality of fluid pressure actuators covered by the cushion body and individually deformable by fluid pressure; The outer surface of the cushion body is a cushion body configured to be responsive to deformation of the plurality of fluid pressure actuators.

[0007] A cushion body according to one embodiment of the present invention comprises: (2) The cushion body according to (1) above, wherein the plurality of fluid pressure actuators include at least one of an expansion / contraction type actuator that can expand and contract by fluid pressure, and a bending type actuator that can bend and deform by fluid pressure.

[0008] A cushion body according to one embodiment of the present invention comprises: (3) The cushion body according to (1) or (2) above, wherein each of the plurality of fluid pressure actuators is elongated and has a longitudinal direction.

[0009] A cushion body according to one embodiment of the present invention comprises: (4) The cushion body according to (3) above, wherein the outer surface of the cushion body is provided with a plurality of intersecting direction grooves extending in an intersecting direction intersecting the longitudinal direction.

[0010] A cushion body according to one embodiment of the present invention comprises: (5) The cushion body according to (3) or (4) above, wherein the plurality of fluid pressure actuators are arranged in parallel in a direction perpendicular to the longitudinal direction.

[0011] A cushion body according to one embodiment of the present invention comprises: (6) The cushion body is the one described in (5) above, wherein the outer surface of the cushion body has a longitudinal groove portion extending in the longitudinal direction between two adjacent fluid pressure actuators among the plurality of fluid pressure actuators.

[0012] A cushion body according to one embodiment of the present invention comprises: (7) The cushion body according to any one of (1) to (6) above, further comprising a control unit capable of controlling the deformation of each of the plurality of fluid pressure actuators.

[0013] A cushion body according to one embodiment of the present invention comprises: (8) The cushion body according to (7) above, wherein the control unit is capable of controlling the deformation of each of the plurality of fluid pressure actuators so that a predetermined movement is reproduced on the outer surface by the plurality of fluid pressure actuators.

[0014] A cushion body according to one embodiment of the present invention comprises: (9) The cushion body according to any one of (1) to (8) above, further comprising a fluid supply / discharge device capable of supplying and discharging fluid to each of the plurality of fluid pressure actuators.

[0015] A cushion body set according to a second aspect of the present invention includes: (10) A plurality of cushion bodies according to any one of (1) to (9) above are provided, The cushion body is a cushion body set having a connecting portion that can be connected to another cushion body.

[0016] A relaxation device according to a third aspect of the present invention comprises: (11) The cushion body according to any one of (1) to (9) above, a human body support device having a support surface capable of supporting a human body, When the plurality of fluid pressure actuators are a plurality of first fluid pressure actuators, The human body support device includes: A support body; a plurality of second fluid pressure actuators that are arranged at different positions in a plan view seen from the support surface side, are supported by the support body from below in the vertical direction, and are individually deformable by fluid pressure; The support surface of the human body support tool is a relaxation device configured to be responsive to deformation of the plurality of second fluid pressure actuators. [Effects of the Invention]

[0017] According to the present invention, it is possible to provide a cushion body, a cushion body set, and a relaxation device that can be supported by a human body and has an outer surface that can respond to deformation of a plurality of fluid pressure actuators. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a plan view of a cushion body according to an embodiment of the present invention; [Figure 2] FIG. 2 is a perspective view of the cushion body shown in FIG. [Figure 3] 2 is a perspective view of the cushion body shown in FIG. 1, showing a state in which some of the fluid pressure actuators are deformed. FIG. [Figure 4]2 is a cross-sectional view of the cushion body taken along line II in FIG. 1. [Figure 5] 2 is a cross-sectional view of the cushion body taken along line II-II in FIG. 1. [Figure 6] FIG. 2 is a side view of the fluid pressure actuator shown in FIG. 1. [Figure 7] FIG. 7 is a partially exploded perspective view of the fluid pressure actuator shown in FIG. 6. [Figure 8] FIG. 7 is a cross-sectional view of the fluid pressure actuator taken along line III-III in FIG. 6. [Figure 9] 7 is a cross-sectional view of the fluid pressure actuator taken along line IV-IV in FIG. 6. [Figure 10A] FIG. 7 is a diagram showing the natural state of the fluid pressure actuator shown in FIG. 6 before bending. [Figure 10B] 7 is a diagram showing a curved state of the fluid pressure actuator shown in FIG. 6. FIG. [Figure 11] 7 is a partially exploded perspective view of a fluid pressure actuator as a modified example of the fluid pressure actuator shown in FIG. 6. FIG. [Figure 12] FIG. 12 is a cross-sectional view of the fluid pressure actuator shown in FIG. [Figure 13A] 12 is a diagram showing a natural state before contraction of the fluid pressure actuator shown in FIG. 11. FIG. [Figure 13B] 12 is a diagram showing a contracted state of the fluid pressure actuator shown in FIG. 11. FIG. [Figure 14] 1 is a perspective view of a cushion body set according to an embodiment of the present invention; [Figure 15] 15 is a diagram showing a state in which the plurality of cushion bodies of the cushion body set shown in FIG. 14 are connected together. FIG. [Figure 16] 1 is a perspective view of a relaxation device according to an embodiment of the present invention; [Figure 17] FIG. 17 is a side view of the human body support device shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, embodiments of a cushion body, a cushion body set, and a relaxation device according to the present invention will be described with reference to the drawings. In each drawing, the same components are designated by the same reference numerals.

[0020] <Cushion body 400> FIG. 1 is a plan view of a cushion body 400 as one embodiment of the cushion body according to the present invention. FIGS. 2 and 3 are perspective views of the cushion body 400. The cushion body 400 is configured to be supported by a human body such as a user. The cushion body 400 of this embodiment is a flat-shaped covering such as a throw mat, and is used by being draped vertically above a lying human body, for example. However, the cushion body according to the present invention is not limited to the covering of this embodiment. The cushion body according to the present invention is not particularly limited as long as it is configured to be supported by the human body, such as a body pillow or sofa cushion. In this embodiment, a flat-shaped covering will be described below as an example. Note that FIG. 1 is a plan view of the cushion body 400 as viewed along the thickness direction D.

[0021] Fig. 4 is a cross-sectional view of the cushion body 400 taken along line II in Fig. 1. Fig. 5 is a cross-sectional view of the cushion body 400 taken along line II-II in Fig. 1. Fig. 5 also shows a control unit 403 that controls the deformation of the fluid pressure actuator 402, and a fluid supply / discharge device 404 that can supply and discharge fluid to and from the fluid pressure actuator 402.

[0022] 1 to 5, the cushion body 400 includes a cushion main body 401 and a plurality of fluid pressure actuators 402. For ease of explanation, the fluid pressure actuators 402 are shown in a simplified form in FIGS. 1 to 5. Details of the fluid pressure actuators 402 of this embodiment will be described later (see FIGS. 6 to 10B).

[0023] The cushion body 401 constitutes the outer surface 400a of the cushion body 400. In other words, the outer surface of the cushion body 401 is the outer surface 400a of the cushion body 400. As shown in FIGS. 4 and 5, the cushion body 401 of this embodiment includes a covering cushion member 411 and an exterior cover 412. The cushion body 401 of this embodiment will be described in detail later (see FIGS. 4 and 5).

[0024] The multiple fluid pressure actuators 402 are covered by the cushion main body 401. The multiple fluid pressure actuators 402 are configured to be individually deformable by fluid pressure. Fig. 2 shows a state in which none of the multiple fluid pressure actuators 402 are deformed, and Fig. 3 shows a state in which only some of the multiple fluid pressure actuators 402 are deformed.

[0025] The outer surface of the cushion main body 401, which serves as the outer surface 400a of the cushion body 400, is configured to be responsive to deformation of the plurality of fluid pressure actuators 402. Here, the phrase "responsive to deformation of the plurality of fluid pressure actuators 402" for the outer surface 400a of the cushion body 400 does not necessarily mean that the outer surface 400a can be deformed in response to deformation of each of the plurality of fluid pressure actuators 402, but also means that the compression rigidity of the cushion body 400 can be changed when the outer surface 400a is pressed in a direction perpendicular to the outer surface 400a in response to deformation of each of the plurality of fluid pressure actuators 402.

[0026] In this way, the cushion body 400 can vary the response of various parts of the outer surface 400a of the cushion body 400 by individually deforming the multiple fluid pressure actuators 402. Therefore, by individually deforming the multiple fluid pressure actuators 402 while the human body is in contact with the outer surface 400a, it is possible to provide an appropriate stimulus to the human body in contact with the outer surface 400a.

[0027] The cushion body 400 of this embodiment will be described in further detail below.

[0028] The cushion body 400 of this embodiment includes, in addition to the cushion main body 401 and the plurality of fluid pressure actuators 402 described above, a control unit 403 and a fluid supply / discharge device 404, as shown in FIG.

[0029] First, details of the fluid pressure actuator 402 of this embodiment will be described. Fig. 6 is a side view of the fluid pressure actuator 402 of this embodiment alone. Fig. 7 is a partially exploded perspective view of the fluid pressure actuator 402. Fig. 8 is a cross-sectional view of the fluid pressure actuator 402 taken along line III-III in Fig. 6. Fig. 9 is a cross-sectional view of the fluid pressure actuator 402 taken along line IV-IV in Fig. 6. Figs. 10A and 10B are diagrams showing the bending operation of the fluid pressure actuator 402. Fig. 10A is a diagram showing the natural state of the fluid pressure actuator 402 before it is bent. Fig. 10B is a diagram showing the bent state of the fluid pressure actuator 402 bent from the natural state shown in Fig. 10A.

[0030] 6 to 10B, the fluid pressure actuator 402 of this embodiment is a McKinven type fluid pressure actuator. However, the fluid pressure actuator 402 is not limited to this configuration and may be another type of fluid pressure actuator.

[0031] 6, the fluid pressure actuator 402 of this embodiment includes a tube 11, a sleeve 12, a first sealing portion 13a, a second sealing portion 13b, and a restraining member 17. The longitudinal direction of the fluid pressure actuator 2 of this embodiment is the axial direction B of the tube 11.

[0032] The tube 11 can bend and deform due to the pressure of the fluid. Specifically, when a fluid flows into the internal space 11a of the tube 11, the tube 11 attempts to contract in the axial direction B and expand in the radial direction C perpendicular to the axial direction B. However, at positions in the circumferential direction G where the restraining members 17 are provided, the restraining members 17 inhibit the tube 11 from shortening in the axial direction B. On the other hand, at positions in the circumferential direction G where the restraining members 17 are not provided, the tube 11 shortens in the axial direction B. As shown in FIG. 10B , the fluid pressure actuator 402 of this embodiment can bend and deform in a direction perpendicular to the axial direction B due to such a change in the shape of the tube 11. In other words, the fluid pressure actuator 402 of this embodiment is a bending actuator that can bend and deform in a direction perpendicular to the axial direction B due to the pressure of the fluid.

[0033] Examples of materials constituting the tube 11 include elastic materials such as butyl rubber, NBR (nitrile rubber), hydrogenated NBR, chloroprene rubber, and epichlorohydrin rubber.

[0034] The fluid used to deform the tube 11 may be a gas such as air, or a liquid such as water or mineral oil.

[0035] As shown in Figures 6 to 9, sleeve 12 is cylindrical and covers the outer peripheral surface of tube 11. Sleeve 12 is an elastic structure made by weaving fiber cords oriented in a predetermined direction, and the oriented cords cross to form repeated diamond shapes. Because of this shape, sleeve 12 can deform like a pantograph and follow the deformation of tube 11 while regulating it.

[0036] It is preferable to use fiber cords such as aromatic polyamide (aramid fiber) or polyethylene terephthalate (PET) as the fiber cords constituting the sleeve 12. However, the fiber cords constituting the sleeve 12 are not limited to these types of fiber cords, and may be, for example, high-strength fiber cords such as PBO fiber (polyparaphenylene benzobisoxazole).

[0037] The first sealing portion 13a and the second sealing portion 13b seal both ends of the tube 11 in the axial direction B. Specifically, the first sealing portion 13a seals one end of the tube 11 in the axial direction B. The second sealing portion 13b seals the other end of the tube 11 in the axial direction B. Hereinafter, in this embodiment, when there is no need to particularly distinguish between the first sealing portion 13a and the second sealing portion 13b, they will simply be referred to as "sealing portion 13."

[0038] As shown in FIG. 7, the sealing portion 13 (first sealing portion 13a in the illustrated example) includes a sealing member 14, a locking ring 15, and a crimping member 16.

[0039] The sealing member 14 seals the end of the tube 11 in the axial direction B. Specifically, the sealing member 14 of this embodiment includes a main body portion 14a and an insertion portion 14b.

[0040] The insertion portion 14b protrudes from the main body portion 14a in the axial direction B. The insertion portion 14b is inserted into the internal space 11a of the tube 11 from the outside of the tube 11 in the axial direction B.

[0041] The sealing member 14 may further include a connecting portion 14c that can be connected to another member. The connecting portion 14c protrudes from the main body portion 14a on the opposite side to the insertion portion 14b in the axial direction B. The connecting portion 14c may be defined with a connecting hole 14c1 that penetrates in the radial direction C to facilitate connection to another member.

[0042] The sealing member 14 is made of a metal such as stainless steel, but is not limited to such a metal and may be made of a hard plastic material or the like.

[0043] As shown in Fig. 7, the locking ring 15 is a ring-shaped member that locks the sleeve 12 to the sealing member 14. Specifically, as shown in Fig. 8, the sleeve 12 is folded back outward in the radial direction C via the locking ring 15.

[0044] 7, the locking ring 15 has a notch 15a cut out from a portion thereof to allow engagement with the sealing member 14. The locking ring 15 may be made of, for example, a metal material or a hard plastic material similar to the sealing member 14. The locking ring 15 may also be made of, for example, natural fiber or a rubber material such as an O-ring.

[0045] The crimping member 16 can crimp the tube 11 and the sleeve 12 together with the sealing member 14. Specifically, the crimping member 16 of this embodiment is a cylindrical member having a larger outer diameter than the insertion portion 14b of the sealing member 14. As shown in FIG. 8 , the crimping member 16 is arranged so as to cover the outside of the tube 11 and the sleeve 12 in the radial direction C in the region where the insertion portion 14b of the sealing member 14 is located in the axial direction B. In this state, the crimping member 16 is crimped by a jig. As a result, the tube 11 and the sleeve 12 are sandwiched between the crimping member 16 and the insertion portion 14b of the sealing member 14 in the radial direction C. In other words, the tube 11 and the sleeve 12 are fixed to the sealing portion 13.

[0046] The crimping member 16 may be made of a metal such as an aluminum alloy, brass, or iron. As shown in Fig. 6, an indentation 16a, which is a mark made by crimping with a jig, may be formed on the outer circumferential surface of the crimping member 16.

[0047] As shown in FIG. 8, the sealing member 14 of the first sealing portion 13a of this embodiment has a connection port 14d and a passage hole 14e. In contrast, the sealing member 14 of the second sealing portion 13b of this embodiment does not have the connection port 14d or the passage hole 14e. The connection port 14d is connected to a fluid supply / discharge device 404 (see FIG. 5) via a flow path member 404a (see FIG. 5), such as a hose. The connection port 14d and the internal space 11a of the tube 11 are connected to each other via the passage hole 14e. Therefore, the fluid that flows into the sealing member 14 through the connection port 14d passes through the passage hole 14e and flows into the internal space 11a of the tube 11. Conversely, the fluid in the internal space 11a of the tube 11 flows out of the connection port 14d through the passage hole 14e. The connection port 14d of this embodiment is provided so as to open outward in the radial direction C of the main body 14a of the sealing member 14. In addition, the through hole 14e of this embodiment is formed across the main body portion 14a and the insertion portion 14b.

[0048] The restraining member 17 is disposed on the inside in the radial direction C with respect to the sleeve 12. More specifically, the restraining member 17 is disposed on the inside in the radial direction C of the sleeve 12, spanning from the first sealing portion 13a to the second sealing portion 13b in the axial direction B. The restraining member 17 may have a length substantially equal to that of the tube 11, for example.

[0049] The restraining member 17 is not compressed in the axial direction B, but is capable of bending deformation in the radial direction C. In other words, the restraining member 17 is configured to resist compression along the axial direction B, and bendable and deformable in the radial direction C. The restraining member 17 restricts expansion and contraction of the tube 11 and the sleeve 12 in both the axial direction B and the radial direction C at the position in the circumferential direction G of the tube 11 where the restraining member 17 is provided. Therefore, the fluid pressure actuator 402 is capable of bending deformation in a direction perpendicular to the axial direction B due to the pressure of the fluid.

[0050] The restraint member 17 is formed using, for example, a leaf spring. The dimensions of the leaf spring are not particularly limited and may be selected appropriately depending on the size of the fluid pressure actuator 402, the required force to be generated, and the like. The material of the leaf spring is also not particularly limited, but typically, a material that is easy to bend and resistant to compression, such as a metal such as stainless steel, may be used. For example, the restraint member 17 may be formed from a thin plate of carbon fiber reinforced plastic (CFRP). CFRP is less susceptible to plastic deformation than metal, and therefore the fluid pressure actuator 402 can easily return to its original straight state after being bent.

[0051] As shown in Fig. 9, the restraining member 17 is disposed between the tube 11 and the sleeve 12 in the radial direction C. The restraining member 17 may be in close contact with the tube 11 and the sleeve 12. Alternatively, the restraining member 17 may be disposed with a small gap between it and the tube 11 and / or the sleeve 12. Furthermore, the restraining member 17 may be embedded in the side wall of the tube 11. Alternatively, the restraining member 17 may be disposed on the inside of the tube 11 in the radial direction C, along the side wall of the tube 11.

[0052] The restraining member 17 is provided on a portion of the tube 11 and the sleeve 12 in the circumferential direction G. That is, the tube 11 has a portion that is covered by the restraining member 17 and a portion that is not covered by the restraining member 17 in the circumferential direction G. The width of the restraining member 17 in the circumferential direction G is not particularly limited, but may be, for example, approximately half the outer diameter of the tube 11.

[0053] Although the restraining member 17 in this embodiment is flat, it may be curved slightly to fit the cross-sectional shapes of the tube 11 and sleeve 12 as long as it does not affect the way it bends.

[0054] As described above, when fluid flows into the internal space 11a of the tube 11 of the fluid pressure actuator 402, the tube 11 attempts to contract in the axial direction B. However, because the restraining member 17 is provided in part of the circumferential direction G of the tube 11 across the axial direction B, contraction of the tube 11 along the axial direction B is restricted in the part of the circumferential direction G where the restraining member 17 is provided. On the other hand, because the part of the tube 11 where the restraining member 17 is not provided attempts to contract, the restraining member 17 acts like a backbone, and the tube 11 and the sleeve 12 bend concavely at a position on the tube 11 opposite in the radial direction C to the position in the circumferential direction G where the restraining member 17 is provided. As a result, the fluid pressure actuator 402 bends as shown in FIG. 10B .

[0055] On the other hand, when the fluid flows out of the internal space 11a of the tube 11, the fluid pressure actuator 402 returns to its original linear position (see FIG. 10A).

[0056] In this way, the fluid pressure actuator 402 is configured to be able to bend and deform in a direction perpendicular to the axial direction B due to the pressure of the fluid.

[0057] As described above, the cushion body 400 of this embodiment is a flat hanging piece. The cushion body 400 is used in an orientation in which the thickness direction D is oriented vertically. As shown in FIG. 1 , the multiple fluid pressure actuators 402 of this embodiment are arranged at different positions in a plan view along the thickness direction D (hereinafter simply referred to as a "plan view"). In other words, the multiple fluid pressure actuators 402 of this embodiment are arranged at different positions in a direction perpendicular to the thickness direction D. More specifically, the multiple fluid pressure actuators 402 of this embodiment are arranged in parallel so that the axial directions B are parallel in a plan view (see FIG. 1 ). In this embodiment, six fluid pressure actuators 402 are arranged in parallel, but the number of fluid pressure actuators 402 is not particularly limited as long as it is two or more.

[0058] Next, a description will be given of the cushion body 401 that covers the periphery of the above-mentioned fluid pressure actuators 402. As shown in Figures 4 and 5, the cushion body 401 covers a plurality of fluid pressure actuators 402.

[0059] Each of the multiple fluid pressure actuators 402 of this embodiment is elongated with an axial direction B as the longitudinal direction. A multiple number of intersecting direction grooves 401a extending in an intersecting direction intersecting with the axial direction B as the longitudinal direction are formed on the outer surface of the cushion main body 401, which serves as the outer surface 400a of the cushion body 400. More specifically, a multiple number of intersecting direction grooves 401a extending in a direction perpendicular to the axial direction B of the fluid pressure actuators 402 are formed on the outer surface 400a of the cushion body 400 of this embodiment in a plan view (see FIG. 1). The intersecting direction grooves 401a are formed at positions where at least a portion of the intersecting direction grooves 401a overlap with the fluid pressure actuators 402 in a plan view (see FIG. 1).

[0060] The provision of the intersecting grooves 401a makes it easier for the cushion body 401 to deform in accordance with the deformation of the fluid pressure actuator 402. Furthermore, when the cushion body 401 is used with a part of the human body, such as a finger, inserted into the intersecting grooves 401a, the deformation of the fluid pressure actuator 402 causes the part of the human body located in the intersecting grooves 401a to be pinched by the cushion body 401, providing an appropriate stimulation and enhancing the relaxation effect.

[0061] 1, longitudinal grooves 401b extending in the axial direction B as the longitudinal direction are formed between any two adjacent fluid pressure actuators 402 among the plurality of fluid pressure actuators 402 arranged in parallel on the outer surface 400a of the cushion body 401 as the outer surface 400a of the cushion body 400. More specifically, in plan view (see FIG. 1), the outer surface 400a of the cushion body 400 of this embodiment has a plurality of longitudinal grooves 401b formed at positions between any two adjacent fluid pressure actuators 402, extending in a direction parallel to the axial direction B of the fluid pressure actuators 402.

[0062] The provision of the longitudinal grooves 401b makes it difficult for the multiple fluid pressure actuators 402 embedded in parallel inside the cushion body 401 to move in a direction perpendicular to the axial direction B inside the cushion body 401. In other words, the provision of the longitudinal grooves 401b can improve the positioning performance of each of the multiple fluid pressure actuators 402 inside the cushion body 401.

[0063] As shown in FIGS. 4 and 5, the cushion body 401 of this embodiment includes a covering cushion member 411 and an exterior cover 412.

[0064] The covered cushion member 411 covers the periphery of each of the multiple (six in this embodiment) fluid pressure actuators 402 in the radial direction C. That is, the cushion main body 401 of this embodiment is provided with multiple (six in this embodiment) covered cushion members 411. Two adjacent covered cushion members 411 are not in contact with each other but are spaced apart. This makes it easier for the cushion body 400 to bend and deform in the thickness direction D at a position between two adjacent covered cushion members 411. Therefore, the deformation performance of the cushion body 400 can be improved.

[0065] The covering cushion member 411 may be made of various cushioning materials such as urethane.

[0066] 4 and 5, the exterior cover 412 entirely covers the plurality of fluid pressure actuators 402, which are each covered by a covering cushion member 411 and arranged in parallel. Specifically, the exterior cover 412 of this embodiment covers the plurality of fluid pressure actuators 402 from both sides in the thickness direction D via the covering cushion member 411. The exterior cover 412 is an exterior member of the cushion body 400. The constituent material of the exterior cover 412 is not particularly limited as long as it is a flexible material that does not inhibit the response of the outer surface 400a due to deformation of the plurality of fluid pressure actuators 402.

[0067] The above-described intersecting grooves 401a may be formed, for example, by providing a narrowed portion in the covering cushion member 411 that covers the periphery of each fluid pressure actuator 402, and arranging the exterior cover 412 so as to fit along the narrowed portion of the covering cushion member 411. The narrowed portion of the covering cushion member 411 may be formed, for example, to have the same shape as the covering cushion member 411 in its natural state, or may be formed by wrapping a tightening member such as a string around the covering cushion member 411 and compressing and deforming it. However, the intersecting grooves 401a may also be formed by other methods.

[0068] Furthermore, the longitudinal grooves 401b described above may be formed, for example, between two adjacent fluid pressure actuators 402, by recessing the exterior covers 412 located on both sides of the two fluid pressure actuators 402 in the thickness direction D in the thickness direction D and connecting the exterior covers 412 with connectors 800 such as rivets. However, the longitudinal grooves 401b may be formed by other methods. As shown in FIG. 4, portions of the exterior covers 412 of this embodiment that face each other in the thickness direction D are connected to each other at a position between two adjacent covered cushion members 411. In other words, the longitudinal grooves 401b of this embodiment are formed between two adjacent covered cushion members 411.

[0069] The bending actuator serving as the fluid pressure actuator 402 of this embodiment is configured to be bendable in the thickness direction D. Therefore, the covered cushion member 411 can bend and deform in the thickness direction D in accordance with the bending and deformation of the fluid pressure actuator 402 in the thickness direction D. As a result, as shown in FIGS. 2 and 3, the outer surface 400a of this embodiment can be deformed in the thickness direction D at positions corresponding to the multiple fluid pressure actuators 402.

[0070] As shown in FIG. 5, the cushion body 400 of this embodiment includes a control unit 403. The control unit 403 is capable of controlling the deformation of each of the multiple fluid pressure actuators 402. Therefore, the control unit 403 of this embodiment can, for example, control at least one of the multiple fluid pressure actuators 402 to bend while preventing at least another fluid pressure actuator 402 from being bent. Furthermore, the control unit 403 of this embodiment can, for example, simultaneously bend at least two fluid pressure actuators 402 so that the phases of the bending deformations are different. Note that FIG. 3 shows a state in which only the central two fluid pressure actuators 402 of the six fluid pressure actuators 402 are bent.

[0071] Furthermore, the control unit 403 of this embodiment can control the deformation of each of the multiple fluid pressure actuators 402 so that a predetermined movement is reproduced on the outer surface 400a by the multiple fluid pressure actuators 402. By controlling the deformation of each of the multiple fluid pressure actuators 402, the control unit 403 may be able to reproduce on the outer surface 400a various movements that are expected to have a relaxing effect as a moderate stimulus, such as the movement of a living organism, such as the movement of the abdomen due to breathing in a human body, or movements that exist in nature, such as the movement of waves.

[0072] The control unit 403 of this embodiment is configured by an external device such as a computer that is arranged outside the cushion main body 401. However, the arrangement position of the control unit 403 is not limited to this configuration. The control unit 403 may be arranged inside the cushion main body 401, for example.

[0073] The control unit 403 includes a processor, such as a general-purpose processor such as a central processing unit (CPU) or a micro processing unit (MPU), or a dedicated processor specialized for a specific process. The control unit 403 may control the fluid pressure of each fluid pressure actuator 402, for example, by controlling the operation of a fluid supply / discharge device 404 (see FIG. 5). The control unit 403 may also include a storage unit that stores control data for the fluid pressure of each fluid pressure actuator 402, for example, to reproduce a predetermined movement on the outer surface 400a. The storage unit may include, for example, a read-only memory (ROM), a random access memory (RAM), etc.

[0074] The fluid supply / drainage device 404 is configured to be able to supply and discharge fluid to each of the multiple fluid pressure actuators 402. More specifically, the fluid supply / drainage device 404 is able to supply fluid to each of the multiple fluid pressure actuators 402. The fluid supply / drainage device 404 is also able to discharge fluid from each of the multiple fluid pressure actuators 402. As shown in FIG. 5 , the fluid supply / drainage device 404 of this embodiment is disposed outside the cushion main body 401, and is configured to be able to supply and discharge fluid to each of the multiple fluid pressure actuators 402 via a flow path member 404a. However, the location of the fluid supply / drainage device 404 is not limited to this configuration. The fluid supply / drainage device 404 may also be disposed inside the cushion main body 401.

[0075] There are no particular limitations on the configuration of the fluid supply / discharge device 404. The fluid supply / discharge device 404 may be configured to include, for example, an intake / exhaust pump.

[0076] As described above, the cushion body 400 of this embodiment includes the cushion main body 401, the multiple fluid pressure actuators 402, the control unit 403, and the fluid supply / drainage device 404, but the cushion body 400 is not limited to this configuration. For example, the cushion body 400 may not include the control unit 403 and the fluid supply / drainage device 404, and may be configured to be connectable to a control device and a fluid supply / drainage device separate from the cushion body 400.

[0077] Furthermore, although each of the plurality of fluid pressure actuators 402 in this embodiment is a bending type actuator shown in Figs. 6 to 10B, the present invention is not limited to this configuration. Each of the plurality of fluid pressure actuators 402 may be, for example, an expansion / contraction type actuator that can expand and contract by fluid pressure. Furthermore, the plurality of fluid pressure actuators 402 may include both a bending type actuator and an expansion / contraction type actuator. Below, an example of an expansion / contraction type actuator that can be used as the fluid pressure actuator 402 will be described with reference to Figs. 11 to 13B.

[0078] Fig. 11 is a partially exploded perspective view of an expansion / contraction type actuator serving as the fluid pressure actuator 402. Fig. 12 is a cross-sectional view perpendicular to the longitudinal direction of the expansion / contraction type actuator serving as the fluid pressure actuator 402 shown in Fig. 11. Figs. 13A and 13B are diagrams showing the expansion / contraction operation of the expansion / contraction type actuator serving as the fluid pressure actuator 402 shown in Figs. 11 and 12. Fig. 13A is a diagram showing the natural state before expansion / contraction of the expansion / contraction type actuator serving as the fluid pressure actuator 402 shown in Figs. 11 and 12. Fig. 13B is a diagram showing the contracted state in which the expansion / contraction type actuator serving as the fluid pressure actuator 402 shown in Figs. 11 and 12 has contracted from the natural state shown in Fig. 13A.

[0079] The expansion / contraction type actuator serving as fluid pressure actuator 402 shown in Figures 11 to 13B is different from the curved type actuator serving as fluid pressure actuator 402 shown in Figures 6 to 10B in the presence or absence of a constraint member 17, but otherwise has the same configuration. Specifically, the expansion / contraction type actuator serving as fluid pressure actuator 402 shown in Figures 11 to 13B does not include a constraint member 17 (see Figure 7, etc.).

[0080] In the expansion / contraction type actuator serving as the fluid pressure actuator 402 shown in FIGS. 11 to 13B, the tube 11 can expand and contract due to the pressure of the fluid. Specifically, when a fluid flows into the internal space 11a of the tube 11, the tube 11 contracts in the axial direction B and expands in the radial direction C (see FIG. 13B). On the other hand, when a fluid flows out of the internal space 11a of the tube 11, the tube 11 expands in the axial direction B and contracts in the radial direction C (see FIG. 13A). The expansion / contraction type actuator serving as the fluid pressure actuator 402 shown in FIGS. 11 to 13B can expand and contract in both the axial direction B and the radial direction C due to such a change in the shape of the tube 11. In other words, the expansion / contraction type actuator serving as the fluid pressure actuator 402 shown in FIGS. 11 to 13B can expand and contract in both the axial direction B and the radial direction C due to the pressure of the fluid.

[0081] In this manner, the plurality of fluid pressure actuators 402 of the cushion body 400 may include expansion / contraction type actuators.

[0082] <Cushion body set 500> Next, a cushion body set 500 as one embodiment of the cushion body set according to the present invention will be described with reference to Figs. 14 and 15. Fig. 14 is a perspective view of the cushion body set 500. As shown in Fig. 14, the cushion body set 500 includes a plurality of cushion bodies 600 (three in this embodiment). The cushion body 600 of this embodiment differs from the cushion body 400 described above (see Figs. 1 to 5) only in the number of fluid pressure actuators 402 and the presence or absence of a connecting portion 601, and the rest of the configuration is the same. Specifically, the cushion body 600 of this embodiment includes two fluid pressure actuators 402.

[0083] As shown in Fig. 14, each cushion body 600 has a connecting portion 601. Specifically, each cushion body 600 has a connecting portion 601 on the edge of the exterior cover 412. Therefore, the cushion body 600 can be connected to another adjacent cushion body 600 via the connecting portion 601. Fig. 15 shows a state in which three cushion bodies 600 are connected and linked via the connecting portions 601.

[0084] In this way, by forming the cushion body set 500 including a plurality of connectable cushion bodies 600, it is possible to easily form a connected cushion body having a desired size and area.

[0085] In this embodiment, the cushion body set 500 including three cushion bodies 600 is exemplified, but the cushion body set 500 may be configured to include only two cushion bodies 600, or may be configured to include four or more cushion bodies 600. Furthermore, each cushion body 600 of the cushion body set 500 may be provided with three or more fluid pressure actuators 402.

[0086] <Relaxation Device 300> Next, a relaxation device 300 will be described as one embodiment of the relaxation device according to the present invention. Fig. 16 is a perspective view of the relaxation device 300. As shown in Fig. 16, the relaxation device 300 comprises a human body support device 100 and a cushion body 400. The relaxation device 300 of this embodiment can be used by supporting the human body from below in the vertical direction A with the human body support device 100, and then covering the human body from above in the vertical direction A with the cushion body 400. In other words, the relaxation device 300 of this embodiment is used by sandwiching the human body between the human body support device 100 and the cushion body 400.

[0087] The cushion body 400 of the relaxation device 300 of this embodiment has the same configuration as that described above (see FIGS. 1 to 5). Therefore, only the configuration of the human body support device 100 of the relaxation device 300 will be described here.

[0088] Figure 17 is a side view of human body support device 100. Human body support device 100 of this embodiment has support surface 100a that supports the human body of a user or other person from below in the vertical direction A. Figure 17 also shows a human body lying on support surface 100a. Below, the configuration of human body support device 100 will be described based on the position of human body support device 100 in which support surface 100a faces upward in the vertical direction A.

[0089] The human body support device 100 of this embodiment is a bed. However, the human body support device 100 is not limited to a bed, and may be, for example, a single-seater sofa or a multi-seater sofa. Therefore, the area of ​​the support surface 100a of the human body support device 100 is not particularly limited. Furthermore, the human body support device 100 may further include a backrest that can support the back of a human body seated on the support surface 100a.

[0090] 17, the support surface 100a of this embodiment includes two convex surfaces 100a1 and one concave surface 100a2 located between the two convex surfaces 100a1, but is not limited to this configuration. The support surface 100a may be, for example, a plane that is substantially perpendicular to the vertical direction A.

[0091] As shown in FIG. 17, the human body supporting device 100 comprises a support main body 1 and a plurality of fluid pressure actuators 2. In FIG. 17, for ease of explanation, the fluid pressure actuators 2 are shown in a simplified form. The fluid pressure actuators 2 may have a configuration similar to the curved actuators shown in FIGS. 6 to 10B, for example. The fluid pressure actuators 2 may also have a configuration similar to the expansion / contraction actuators shown in FIGS. 11 to 13B, for example. The human body supporting device 100 of this embodiment comprises only the expansion / contraction actuators shown in FIGS. 11 to 13B as the fluid pressure actuators 2. Hereinafter, for ease of explanation, in order to distinguish between the fluid pressure actuators 402 of the cushion body 400 and the fluid pressure actuators 2 of the human body supporting device 100, the fluid pressure actuators 402 of the cushion body 400 will be referred to as the "first fluid pressure actuator 402," and the fluid pressure actuators 2 of the human body supporting device 100 will be referred to as the "second fluid pressure actuator 2."

[0092] Each of the second fluid pressure actuators 2 is configured to be deformable by fluid pressure. The second fluid pressure actuators 2 are also individually deformable by fluid pressure.

[0093] The second fluid pressure actuators 2 are arranged at different positions in a top plan view as seen from the support surface 100a side. In other words, as shown in Fig. 17, the second fluid pressure actuators 2 are arranged at different positions in a horizontal direction perpendicular to the vertical direction A.

[0094] The second fluid pressure actuators 2 are supported from below in the vertical direction A by the support body 1.

[0095] Support surface 100a of human body support device 100 is configured to be responsive to deformation of the multiple second fluid pressure actuators 2. The meaning of support surface 100a being "responsive to deformation of the multiple second fluid pressure actuators 2" is not limited to support surface 100a being deformable in response to deformation of each of the multiple second fluid pressure actuators 2, but also includes the meaning that the compression rigidity of human body support device 100 can be changed when supporting surface 100a is pressed downward in the vertical direction A in response to deformation of each of the multiple second fluid pressure actuators 2.

[0096] In this way, the human body support device 100 is supported from below in the vertical direction A by the support main body 1 and is equipped with a plurality of second fluid pressure actuators 2 that can be deformed individually. The individual deformation of the plurality of second fluid pressure actuators 2 makes it possible to vary the response of each location on the support surface 100a of the human body support device 100. Therefore, by individually deforming the plurality of second fluid pressure actuators 2 while the human body is supported on the support surface 100a, it is possible to provide an appropriate stimulus to the human body supported on the support surface 100a.

[0097] The following describes the details of the support body 1 of the human body support device 100 of this embodiment.

[0098] As shown in FIG. 17, the support body 1 of this embodiment includes a skeleton body 22, a lower cushion member 23, and an upper cushion member 24.

[0099] The skeleton 22 is configured to be able to support the vertical load of a human body on the support surface 100a. The skeleton 22 is configured using a metal such as stainless steel, but is not limited to such a metal and may be configured using a hard plastic material or the like.

[0100] The lower cushion member 23 is in contact with the plurality of second fluid pressure actuators 2 from below in the vertical direction A. More specifically, the lower cushion member 23 of this embodiment is located between the plurality of second fluid pressure actuators 2 and the above-described skeleton 22 in the vertical direction A. The lower cushion member 23 of this embodiment is supported by the skeleton 22 from below in the vertical direction A. That is, the plurality of second fluid pressure actuators 2 of this embodiment are supported by the skeleton 22 and the lower cushion member 23 of the support main body 1 from below in the vertical direction A. More specifically, the plurality of second fluid pressure actuators 2 of this embodiment are supported by the skeleton 22 from below in the vertical direction A via the lower cushion member 23. When a human body is supported on the support surface 100a of the human body support device 100, each second fluid pressure actuator 2 is subjected to a force that bends it downward in the vertical direction A. However, this force is received by the skeleton 22 via the lower cushion member 23. Therefore, when a human body is supported on the support surface 100a of the human body support device 100, it is possible to prevent each second fluid pressure actuator 2 from bending significantly downward in the vertical direction A. Furthermore, by interposing the lower cushion member 23 between the multiple second fluid pressure actuators 2 and the skeleton body 22, each second fluid pressure actuator 2 can bend slightly downward in the vertical direction A so as to be embedded in the lower cushion member 23. Therefore, it is possible to prevent the human body on the support surface 100a from feeling a foreign body sensation due to the presence of multiple second fluid pressure actuators 2 below the support surface 100a.

[0101] The lower cushion member 23 may be made of various cushioning materials, such as urethane. Alternatively, the lower cushion member 23 may be made of, for example, a flexible bag and an indefinite filling stuffed inside the bag. The indefinite filling may be, for example, a group of small pieces including a plurality of linear or granular pieces. Examples of the linear pieces include, for example, small pieces of polyester fiber, such as small pieces of polyethylene terephthalate fiber. Examples of the group of small pieces made of linear pieces include cotton made of polyester fiber. Examples of the granular pieces include, for example, small pieces of foamed resin, such as small pieces of urethane foam, and small pieces of resin, such as small pieces of polyethylene pipe. However, the small pieces constituting the filling are not limited to the small pieces exemplified above. Furthermore, the lower cushion member 23 may be, for example, a piece made of a plurality of the above-mentioned linear pieces compressed and integrated to have a fixed shape.

[0102] The upper cushion member 24 covers the plurality of second fluid pressure actuators 2 from above in the vertical direction A. More specifically, in this embodiment, the upper cushion member 24 is in contact with the plurality of second fluid pressure actuators 2 from above in the vertical direction A. The response of the support surface 100a due to the deformation of the second fluid pressure actuators 2 is dispersed by being transmitted via the upper cushion member 24. This makes it possible to prevent the human body on the support surface 100a from directly feeling the deformation of the second fluid pressure actuators 2, and to prevent the human body on the support surface 100a from feeling a foreign body sensation due to the presence of the plurality of second fluid pressure actuators 2 below the support surface 100a.

[0103] The upper cushion member 24 may be made of, for example, the same material as the material exemplified above for the lower cushion member 23. However, it is preferable that the upper cushion member 24 has a lower compressive rigidity in the vertical direction A than the lower cushion member 23. In other words, it is preferable that the upper cushion member 24 is softer than the lower cushion member 23 in the vertical direction A. This makes it easier for the upper cushion member 24 to deform in response to the deformation of the second fluid pressure actuator 2 than the lower cushion member 23, compared to a configuration in which the upper cushion member 24 is harder than the lower cushion member 23, thereby improving the responsiveness of the support surface 100a to the deformation of the second fluid pressure actuator 2. Therefore, it is preferable that the materials for the lower cushion member 23 and the upper cushion member 24 be selected so as to satisfy the above-mentioned compressive rigidity relationship. The hardness of the lower cushion member 23 and the upper cushion member 24 may be measured, for example, by a test method specified in JIS K 6400-2 (Method D).

[0104] From the same viewpoint as above, it is preferable that the maximum thickness of the upper cushion member 24 in the vertical direction A is smaller than the maximum thickness of the lower cushion member 23 in the vertical direction A. By doing so, it is easier to improve the responsiveness of the support surface 100a due to the deformation of the second fluid pressure actuator 2.

[0105] The multiple second fluid pressure actuators 2 of the human body supporting device 100 of this embodiment are individually deformable as described above. The deformation of each of the multiple second fluid pressure actuators 2 may be controlled, for example, by the control unit 403 (see FIG. 5) of the cushion body 400. Furthermore, the deformation of each of the multiple second fluid pressure actuators 2 may be controlled, for example, by a control unit provided in the human body supporting device 100 itself, separate from the control unit 403 (see FIG. 5) of the cushion body 400.

[0106] The plurality of second fluid pressure actuators 2 may be controlled by the control unit 403 or the like so that, for example, at least one second fluid pressure actuator 2 expands and contracts, while another at least one second fluid pressure actuator 2 does not expand and contract. Furthermore, the plurality of second fluid pressure actuators 2 may be controlled by the control unit 403 or the like so that, for example, at least two second fluid pressure actuators 2 expand and contract simultaneously, with the expansion and contraction deformation phases being different.

[0107] Furthermore, the control unit 403 or the like may control the deformation of each of the plurality of second fluid pressure actuators 2 so that a predetermined movement is reproduced on the support surface 100a by the plurality of second fluid pressure actuators 2. By controlling the deformation of each of the plurality of second fluid pressure actuators 2, the control unit 403 or the like may be able to reproduce on the support surface 100a various movements that are expected to have a relaxing effect as a moderate stimulus, such as the movement of a living thing, such as abdominal movement due to breathing of a human body, or movements that exist in nature, such as the movement of waves.

[0108] In particular, in the relaxation device 300 of this embodiment, by combining deformation control of the multiple first fluid pressure actuators 402 of the cushion body 400 with deformation control of the multiple second fluid pressure actuators 2 of the human body support device 100, various movements can be reproduced by utilizing both the outer surface 400a of the cushion body 400 and the support surface 100a of the human body support device 100.

[0109] The supply and discharge of fluid to and from each second fluid pressure actuator 2 of the human body supporting device 100 may be performed, for example, by a fluid supply and discharge device 404 (see FIG. 5) of the cushion body 400. However, the supply and discharge of fluid to and from each second fluid pressure actuator 2 of the human body supporting device 100 may also be performed, for example, by a fluid supply and discharge device that is provided on the human body supporting device 100 itself, separate from the fluid supply and discharge device 404 (see FIG. 5) of the cushion body 400.

[0110] The cushion body, cushion body set, and relaxation device according to the present invention are not limited to the specific configurations shown in the above-described embodiments, and various modifications, changes, and combinations are possible without departing from the scope of the claims. [Industrial Applicability]

[0111] The present invention relates to a cushion body, a cushion body set, and a relaxation device. [Explanation of symbols]

[0112] 1: Support body 2: Second fluid pressure actuator 11: Tube 11a:Inner space 12: Sleeve 13: Sealing part 13a: First sealing part 13b: Second sealing part 14: Sealing member 14a: Main body 14b: Insertion section 14c: Connection part 14c1: Connecting hole 14d: Connection port 14e: Passing hole 15: Locking ring 15a: Notch 16: Crimping material 16a: Indentation 17: Restraint member 22: Skeleton 23: Lower cushion member 24: Upper cushion member 100:Human support equipment 100a: Support surface 100a1: convex 100a2: Concave 400: Cushion body 400a: Exterior 401: Cushion body 401a: Cross direction groove 401b: longitudinal groove 402: First fluid pressure actuator 403: Control unit 404:Fluid supply / drainage device 404a: Flow path member 411: Covered cushion member 412: Exterior cover 500: Cushion body set 600: Cushion body 601: Connection part 800: Connector A: Vertical direction B: Axial direction of the second fluid pressure actuator C: Radial direction of the second fluid pressure actuator D: Thickness direction of cushion body G: Circumferential direction of the second fluid pressure actuator

Claims

1. A cushion body that can be supported by a human body, a cushion body that forms an outer surface of the cushion body; a plurality of fluid pressure actuators covered by the cushion body and individually deformable by fluid pressure; The outer surface of the cushion body is configured to be responsive to deformation of the plurality of fluid pressure actuators.

2. The cushion body according to claim 1 , wherein the plurality of fluid pressure actuators include at least one of an expansion / contraction type actuator that can be expanded / contracted by fluid pressure and a bending type actuator that can bend / deform by fluid pressure.

3. The cushion body according to claim 1 or 2, wherein each of the plurality of fluid pressure actuators is elongated and has a longitudinal direction.

4. The cushion body according to claim 3 , wherein the outer surface of the cushion body is provided with a plurality of transverse grooves extending in a transverse direction intersecting the longitudinal direction.

5. The cushion body according to claim 3 , wherein the plurality of fluid pressure actuators are arranged in parallel in a direction perpendicular to the longitudinal direction.

6. The cushion body according to claim 5 , wherein the outer surface of the cushion body is provided with a longitudinal groove extending in the longitudinal direction between two adjacent fluid pressure actuators among the plurality of fluid pressure actuators.

7. The cushion body according to claim 1 or 2, further comprising a control unit capable of controlling the deformation of each of the plurality of fluid pressure actuators.

8. The cushion body according to claim 7 , wherein the control unit is capable of controlling the deformation of each of the plurality of fluid pressure actuators so that a predetermined movement is reproduced on the outer surface by the plurality of fluid pressure actuators.

9. The cushion body according to claim 1 or 2, further comprising a fluid supply / discharge device capable of supplying and discharging fluid to each of the plurality of fluid pressure actuators.

10. A plurality of cushion bodies according to claim 1 or 2 are provided, A cushion body set, wherein the cushion body has a connecting portion that can be connected to another cushion body.

11. The cushion body according to claim 1 or 2; a human body support device having a support surface capable of supporting a human body, When the plurality of fluid pressure actuators are a plurality of first fluid pressure actuators, The human body support device includes: A support body; a plurality of second fluid pressure actuators that are arranged at different positions in a plan view seen from the support surface side, are supported by the support body from below in the vertical direction, and are individually deformable by fluid pressure, A relaxation device, wherein the support surface of the human body support tool is configured to be responsive to deformation of the plurality of second fluid pressure actuators.

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