JP4545455B2 - cushion - Google Patents

Description

  The present invention relates to a cushion, can obtain cushioning properties with a fluid such as water or a gel-like substance, and can support the butt portion evenly and stably in the front and rear, left and right, and durability of the sealed portion even when sitting so as to drop the body The present invention relates to a cushion particularly suitable for a wheelchair.

  Conventionally, cushions are used to improve the sitting comfort of chairs and seats, and seats using canvas etc. so that they can be folded in wheelchairs used to move people with physical disabilities. In many cases, there is a need for a cushion that can improve sitting comfort.

  Conventionally used cushions include various materials such as cotton and synthetic resin foam, metal springs, water, air and other fluids. Is used.

  On the other hand, one of the characteristics necessary as a cushion for wheelchairs is that a part that contacts the body can be uniformly supported without being pressed, and a cushion having a so-called body pressure dispersibility is preferable, and water or a gel-like substance is contained inside. It is conceivable to use a cushion containing a fluid such as.

  As shown in FIG. 5, for example, a cushion containing a fluid such as a gel-like substance is formed of a synthetic resin flexible sheet material as shown in FIG. A water bag 2 and a large number of support cores 3 standing on the upper surface thereof are provided, and the inside of the support core 3 is a water storage chamber 4 whose lower surface is closed by a partition sheet 5 above the bottom water bag 2. In addition, in order to connect the water storage chambers 4 to each other, a communication hole 6 is provided in the partition sheet 5 corresponding to each support core 3, and the inside of the bottom water bag 2 is a communication path 7. .

  Therefore, when sitting on the mat body 1, as shown in FIG. 5C, water gently flows from the water storage chamber 4 at the high body pressure to the water storage chamber 4 at the low body pressure. The amount of water that is inversely proportional to the magnitude of body pressure is distributed to 4 so that the user's buttocks are supported with a uniform force.

  In Patent Document 2, as a seat cushion structure, a gel layer formed by injecting a highly water-absorbing resin and water into a bag-like member and gelling is surrounded by a fiber cushion layer containing resin fibers, and the outside thereof is surrounded. An outer skin layer coated with an air layer is disclosed to disperse body pressure and maintain temperature and humidity within a comfortable range.

Further, Patent Documents 3 and 4 disclose a pad / cushion material obtained by laminating a gel material and a low-resilience foam material, and a cushion material in which a skeleton having a double honeycomb three-layer structure is placed in an inner bag.
JP-A-63-257514 JP-A-9-154672 JP 2001-198995 A JP 2002-300940 A

  However, in the conventional cushion, a partition wall having a communication hole is provided in one bag body, and a fluid such as water is gently allowed to flow through the communication hole of the partition wall so that the user's body is evenly forced. However, because the fluid tries to flow in all directions due to the force applied to the cushion, it can be used as a cushion for a wheelchair, as in the case of using the wheelchair itself. The movement of the fluid causes the fluid to flow, and there is a problem that it is impossible to sit in a stable state.

  In particular, there is a problem that the tilt of the body is promoted when it is difficult to return the tilt or to sit down again because the body is inconvenient.

  Furthermore, the conventional bag body for storing fluids such as water in the cushion is often constructed by welding and sealing the periphery of a sheet-like object, and the body is inconvenient when used in a wheelchair. Many people sit down so as to fall on the cushion when sitting, and there is a problem that a large force is applied to the surrounding sealing portion via the fluid inside the cushion and the sealing portion is easily damaged. .

  For this reason, there is a problem that the sealing portion must be reinforced to withstand an impact, or a high-strength special material or a bag body with a special sealing structure must be prepared.

  The present invention has been made in view of the problems of the prior art, and can obtain cushioning properties with water, gel-like substances, etc., and can stably support the hips in the front and rear, left and right, and fall. An object of the present invention is to provide a cushion that does not damage the durability of the sealing portion even when sitting on the seat, and does not impair its durability.

The cushion according to claim 1 of the present invention for solving the problems of the prior art is provided with a sealing portion by connecting the front and rear end portions of an airtight and watertight sheet, and both side end portions and the inner side portion of the sheet. A double-layer sealing portion is formed in a bag shape, a suspension cloth member having a communication hole is provided to connect the upper and lower sheets of the bag shape, and a fluid cushion main body for introducing fluid into the interior; A core material applied to the back surface of the fluid cushion main body to which the fluid cushion main body is attached, an elastic cushion member formed of an elastic body covering the fluid cushion main body attached to the core material, and an outer side of the elastic cushion member a cushion and a cover, the width of the core is smaller than the distance of the sealing portion of the inside of the double seal portion, the fluid cushion body, the Attached to form a bent portion wound around the core material as folds in further inside the serial double sealing portion, the seating presence of the elastic cushion member to stabilize the front and rear of the cushion The anti-slip portion before protruding upward is formed, and a plurality of the suspension cloth members of the fluid cushion body are arranged in the front-rear direction so as to stabilize the left and right of the cushion.

According to this cushion, the front and rear end portions of the airtight and watertight sheet are connected to provide a sealing portion, and double sealing portions are provided at both side end portions and the inner side portion of the sheet to form a bag. Forming a suspension cloth member that connects the upper and lower surface sheets of the bag and has a communication hole, and a fluid cushion body that puts fluid inside, and a fluid cushion body that is applied to the back surface of the fluid cushion body And a cushion comprising an elastic cushion member formed of an elastic body that covers the fluid cushion body attached to the core material, and a cover that covers the outside of the elastic cushion member. The front and back of the elastic cushion member, which is formed on the front part of the seating surface of the elastic cushion member, can be supported by the anti-slip part before protruding upward, and the fluid cushion Hanging cloth member body that achieve multiple arrangement stabilizes the left and right to regulate the flow direction of the fluid in the front-rear direction, so that it can sit to stabilize the front and rear left and right of the entire cushion. Further, a bag-like fluid cushion body provided with double sealing portions on both side end portions and the inner side portion of the airtight and watertight sheet is placed on the inner surface of the double sealing portion on the core material applied to the back surface thereof. By bending and mounting with, the impact when sitting down can be reduced so that it does not directly apply to the sealing part, and the impact does not damage the sealing part or impair its durability I am doing so.

  According to a second aspect of the present invention, in addition to the structure according to the first aspect, the inner portion of the elastic cushion member that contacts the outer portion of the fluid cushion main body is configured by an inclined surface that sags downward. It is characterized by this.

  According to this cushion, by pressing the outer side of the fluid cushion body with the inclined surface that the bottom of the elastic cushion member squeezes, it is possible to suppress the roll of the fluid cushion body and to stabilize the fluid cushion body. Steps with the cushion member are reduced to improve sitting comfort.

  Furthermore, a cushion according to a third aspect of the present invention, in addition to the configuration according to the first or second aspect, includes a sealing portion positioned below the core material, wherein the fluid supply / exhaust port provided in the fluid cushion body is provided. It is provided between the bent portion.

  According to this cushion, the fluid supply / exhaust port provided in the fluid cushion body is provided between the sealing portion and the bent portion located below the core material, so that the fluid supply / exhaust port is always the core material, etc. It is possible to prevent the cap from being removed due to being pressed by the.

According to the cushion of the first aspect of the present invention, the front and rear end portions of the airtight and watertight sheet are connected to provide the sealing portion, and double sealing is performed on both side end portions and the inner side portion of the sheet. provided parts is formed in a bag shape, together with the bag-like upper and lower outer sheets and connecting and providing the hanging cloth member having a communicating hole, a fluid cushion body to put the fluid into the interior, against the rear surface of the fluid cushion body A cushion provided with a core member to which the fluid cushion body is attached, an elastic cushion member formed of an elastic body covering the fluid cushion body attached to the core member, and a cover covering the outside of the elastic cushion member, In order to stabilize the front and rear of the cushion, an anti-slip portion that protrudes upward is formed on the front portion of the seating surface of the elastic cushion member. Since a plurality of the suspension cloth members of the fluid cushion main body are arranged in the front-rear direction so as to stabilize, the slant before protruding upward formed at the front portion of the seating surface of the elastic cushion member while being supported by the fluid cushion main body with a uniform force The prevention part can stabilize the front and rear, and a plurality of suspension members of the fluid cushion body can be arranged in the front and rear direction to regulate the flow direction of the fluid and to stabilize the left and right. Sit back and forth and stabilize the entire body.

Further, a bag-like fluid cushion body provided with double sealing portions on both side end portions and the inner side portion of the airtight and watertight sheet is placed on the inner surface of the double sealing portion on the core material applied to the back surface thereof. Since it was attached by bending, it can reduce the impact when sitting down so that it does not directly apply to the sealing part, and it can prevent the sealing part from being damaged by the impact or impairing its durability .

  According to the second aspect of the present invention, the outer side portion of the fluid cushion body is pressed by the inclined surface in which the lower portion of the elastic cushion member swells, so that the roll of the fluid cushion body is suppressed. The seating comfort can be improved by reducing the level difference from the elastic cushion member.

  Furthermore, according to the cushion according to claim 3 of the present invention, the fluid supply / exhaust port provided in the fluid cushion main body is provided between the sealing portion and the bent portion located below the core material. It is possible to prevent the cap from being removed due to the supply / discharge port being always pressed by the core material or the like.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
1 to 4 relate to one embodiment of the cushion of the present invention, FIGS. 1A to 1E are schematic perspective views showing the manufacturing process of the fluid cushion main body, and FIG. 2 to the core material of the fluid cushion main body. 3 (a) and 3 (b) are schematic exploded perspective views and schematic perspective views of the elastic cushion member, and FIGS. 4 (a) to 4 (c) are external perspective views and longitudinal cross sections of the cushion. It is a figure and a cross-sectional view.

  The cushion 10 is used by being mounted on a wheelchair seat, for example, and includes a fluid cushion body 11 into which a fluid such as water or a fluid such as a gel substance is placed.

  As shown in FIG. 1 together with its manufacturing process, this fluid cushion body 11 uses a hermetic and watertight sheet 12 and welds the front and rear end portions 12a and 12b with a high frequency welder or the like to form a sealing portion 13. In addition to the airtight and watertight state, the upper and lower surfaces of both end portions 12c and 12d of the sheet 12 connected endlessly (annular) with the sealing portion 13 positioned in the middle portion of the back surface are welded by a high frequency welder or the like. The sealing portions 14 and 14 are formed to form an airtight and watertight state, and the sealing portions 15 and 15 are formed in parallel inside the sealing portions 14 and 14 of the both side end portions 12c and 12d of the sheet 12. In addition, the sealing portions 14 and 15 are formed on the both side end portions 12c and 12d, respectively, and one sealed space is formed on the inside thereof, and a liquid such as water or a fluid such as a gel substance can be placed therein. So that the can.

  As the airtight and watertight sheet 12, for example, a synthetic resin sheet is used, preferably a polyvinyl chloride sheet, and the degree of polymerization thereof is higher than that of a normal 1100 to 1300, with a degree of polymerization of about 1700. Is preferable in terms of strength, and a thickness in the range of 0.2 to 1.0 mm is used, for example, a thickness of about 0.5 mm is used. If the thickness of the sheet 12 is less than 0.2 mm, the sheet 12 is easily broken, and if it exceeds 1.0 mm, the seat 12 feels hard when sitting, and the sitting comfort is not good.

  In addition to the above, the sheet 12 may be a thermoplastic synthetic resin sheet such as polyvinyl chloride leather or tarpaulin, a laminate of a thermoplastic synthetic resin and a woven fabric, a rubberized cloth, or the like. .

  The fluid cushion main body 11 has a suspension cloth 16 as a suspension cloth member disposed in the fluid cushion main body 11 along a front-rear direction Y orthogonal to the left-right direction X. They are welded by a high-frequency welder or the like and connected by a welded portion 16a. In the illustrated example, four hanging cloths 16 are attached at almost equal intervals.

  Each suspension cloth 16 is formed with a hole (communication hole) 16b penetrating the front and back surfaces (see FIG. 2), and a liquid such as water or a fluid such as a gel-like substance that passes inside the fluid cushion body 11 passes through. Can be moved.

  These hanging cloths 16 allow the fluid cushion body 11 to flow freely in the fluid cushion main body 11 in the front and rear direction Y while being restricted in the left and right direction X to the right and left. The vibration of the direction is suppressed, and the deviation of the fluid and the fluid cushion main body 11 are prevented from expanding beyond a certain level.

  For example, the suspension cloth 16 is made of the same material as that of the sheet 12 of the fluid cushion main body 11, and is made of a material that can be welded or bonded by another high-frequency welder or the like.

  As the attachment structure of the hanging cloth 16, other than the I-beam method, the X-beam method, the waffle beam method, etc., a method of attaching via a hanging cloth reinforcing piece disclosed in JP-A-1-230303 is adopted. .

  Further, the fluid cushion main body 11 has a fluid supply / discharge port 17 communicating with the inside of the fluid sealing body 11 inside the sealing portion 15 so as to be sealed with a cap 18. 2. As shown in FIG. 2, the fluid cushion main body 11 is attached to a core material 19 to be described later, and is disposed closer to the sealing portion 15 than the bent portion 21, and the cap 18 is used when the core material 19 or the fluid cushion is used. By being positioned on the lower side of the main body 11, even if a fluid pressure is applied, it does not come out.

  The supply / exhaust port 17 is not limited to being formed in the lower sheet 12 of the fluid cushion body 11, and is provided in the upper sheet 12 as long as it is between the sealing portion 15 and the bent portion 21. Anyway.

  Thus, the bag-like fluid cushion main body 11 sealed with the sealing portion 13 at the front and rear end portions of the sheet 12 and the double sealing portions 14 and 15 at the left and right side end portions is sealed at the left and right side end portions. A core member 19 is used to prevent the impact force from being applied to the portions 14 and 15 via a liquid such as water or a gel-like substance and to maintain the shape of the fluid cushion main body 11.

  As shown in FIG. 1C, the core material 19 is formed in a rectangular plate shape. For example, a polyethylene foam or a rubber plate having a relatively low expansion ratio is used, and the thickness is 1 to 1. A plate of about 5 mm is used.

  The length of the core member 19 is such that the length L1 in the front-rear direction Y is smaller than the length L in the front-rear direction Y of the fluid cushion body 11, and the length B1 in the left-right direction X perpendicular thereto is the length of the fluid cushion body 11. It is smaller than the interval B between the sealing portions 15 and 15 inside the double sealing portions 14 and 15.

  As a result, when the fluid cushion body 11 is placed on the core material 19 and both side ends in the left-right direction X are wound, the fluid cushion body 11 is bent inside the sealing portion 15 as shown in FIG. The curved portion 21 is formed, and the fluid supply / discharge port 17 and the cap 18 are pressed by the core member 19.

  Such a fluid cushion main body 11 and the core material 19 are placed on the core material 19 on the fluid cushion main body 11 as shown in FIGS. Are hooked so as to be bent further inside than the sealing portion 15 inside the fluid cushion body 11 to form a bent portion 21, and a hook 20 (in the illustrated example, attached to the fluid cushion member 11 and the core member 19 in advance). 4) to attach and fix.

  In this state, the fluid cushion body 11 is attached to the core member 19 with the hook 20, and a fluid such as water or a gel-like substance is introduced into the fluid cushion body 11 from the supply / exhaust port 17 and sealed with the cap 18. 2, the fluid cushion main body 11 is bent at both ends of the core member 19 to form a bent portion 21 in which the upper and lower sheets 12 are substantially in close contact with each other, and the cap 18 is pressed by the core member 19. Even when sitting on the fluid cushion body 11 so as to fall on the fluid cushion body 11, the movement is limited by the narrowing effect due to the narrow gap in which the liquid such as water or the fluid such as the gel-like substance is almost in close contact with the bent portion 21, and so on. The impact pressure generated in the fluid such as the liquid or gel substance is prevented from being directly applied to the sealing portion 15, and the fluid pressure applied to the cap 18 is pushed by the core member 19. To prevent the escape Te.

  Thereby, damage to the sealing part 15 of the fluid cushion main body 11 can be prevented, and durability can also be improved. Further, it is possible to prevent the cap 18 from coming off, and it is possible to improve the sitting comfort without sitting directly on the cap 18.

  Further, in this cushion 10, when the fluid cushion body 11 is placed on the seat of the wheelchair, the bent portions 21 of the fluid cushion body 11 are positioned on both sides in the left-right direction X, and the hanging cloth 16 is parallel to the front-rear direction Y. Therefore, the flow of the internal fluid is free in the front-rear direction Y, and in the left-right direction X, the flow is regulated by the communication hole 16b penetrating the front and back of the hanging cloth 16, and the left and right sides of the fluid cushion body 11 are left and right. The swing in direction X (rolling in a wheelchair) can be suppressed.

  Next, in the cushion 10, the fluid cushion body 11 attached to the core member 19 is covered with the elastic cushion member 22.

  For example, as shown in FIG. 3, the elastic cushion member 22 is formed by adhering an adhesive or the like so that the upper and lower sides of the intermediate frame 22a are covered with plates 22b and 22c. Any one of the upper and lower surfaces of the piece is not bonded, but communicates with the inside of the frame 22a as a non-bonded surface 22d. Then, as shown in FIG. 3 (b), the non-adhesive surface 22d is deformed so as to open up and open, and the fluid cushion body 11 integrated with the core member 19 is inserted into the frame body 22a from this portion. The state is covered with the elastic cushion member 22.

  Further, in this elastic cushion member 22, the front part on the seating surface side of the upper plate 22b protrudes upward as a front anti-slip part 22e which is made higher than the other part, thereby preventing the pre-slip state. . The shape of the anti-slip portion 22e in front of the front portion of the upper plate body 22b is a smooth arc shape, semicircular shape, or trapezoidal shape, and is made harder than the plate body 22b portion of the other elastic cushion member 22. In addition to the effect of the height, it is possible to more effectively prevent the previous turning state from occurring.

  Further, in this elastic cushion member 22, the inner surface of the intermediate frame 22a is formed as an inclined surface 22f that swells downward, and the outer surface of the fluid cushion main body 11 attached to the core member 19 is in contact with these inclined surfaces 22f. By doing so, the position of the fluid cushion main body 11 can be stabilized.

  Due to the effect of the inclined surface 22f and the hanging cloth 16, even if the thickness of the fluid cushion main body 11 is increased, it is possible to prevent and stabilize the rolling, and for example, the height of the conventional hanging cloth 16 is 25 mm. What was about can be reduced to about 45 mm, and the contact area when sitting can be increased to improve the body pressure dispersibility, and the sitting comfort can be further improved.

  Further, by positioning both the elastic cushion member 22 and the fluid cushion main body 11 on the inclined surface 22f, a sudden change in hardness from the outer elastic cushion member 22 to the inner fluid cushion main body 11 is suppressed. It keeps sitting comfortably.

  Such an elastic cushion member 22 is made of, for example, urethane foam. The flat portion excluding the front anti-slip portion 22e on the front portion of the upper plate body 22b that is the upper surface of the cushion 10 is replaced with another portion, that is, the front end. It is made softer than the prevention portion 22e, the intermediate frame 22a, and the lower plate 22c of the lower surface, so that both sitting comfort and shape retention can be achieved.

  The elastic cushion member 22 may be made of other synthetic resin foam in addition to urethane.

  The elastic cushion member 22 is manufactured by separately forming each part and integrating them by bonding or the like, as shown in the illustrated example, and also, except for the upper plate part 22b, that is, the frame body 22a and the lower plate. The portion 22c is integrally formed, and the upper plate portion 22b is bonded to the non-bonded portion 22d, or the upper plate portion 22 and the front anti-slip portion 22e are bonded separately, or the front anti-slip portion is provided. The manufacturing method may be selected as appropriate, for example, by forming 22e integrally with the frame body 22a or by bonding the front anti-slip portion 22e and the frame body 22a separately.

  In the cushion 10, as shown in FIG. 4, a cover 23 is provided so as to cover the outside of the elastic cushion member 22.

  The cover 23 has a fastener 23a attached to at least one of the four side surfaces (front and left and right three sides in the illustrated example) so that the cover 23 can be opened and closed. The cover 23 can be removed when it becomes dirty. It is like that.

  The cover 23 is preferably made of a base material having waterproofness, antibacterial properties, stretchability, abrasion resistance, and the like. For example, synthetic leather made of urethane resin, synthetic leather having a photocatalytic function or a deodorizing function, etc. The bottom surface that is in contact with the seat of the wheelchair is subjected to dot processing using a synthetic resin such as a polyester resin as the slip prevention portion 23b.

    Further, a carrying handle 23c is provided on the front and back surfaces of the cover 23 so that it can be easily attached and detached when the wheelchair is folded. In addition, you may make it provide the handle for carrying in the front side surface.

  According to the cushion 10 configured in this way, by providing the suspension cloth 16 along the front-rear direction Y on the fluid cushion main body 11, it is possible to suppress the roll and the like and improve the stability in the left-right direction X and to be elastic. By providing the anti-slip portion 22e before protruding upward at the front portion of the seating surface of the cushion member 22, the stability in the front-rear direction Y can be enhanced, and these enable a stable sitting.

  Further, the stability of the fluid cushion main body 11 is enhanced by ensuring the stability in the cushion 10 and by making the inner surface of the frame 22a of the elastic cushion member 22 into the inclined surface 22f that swells downward. The thickness can be increased, the contact area when sitting can be increased, the body pressure dispersibility can be improved, and it can be supported with a uniform force, and the sitting comfort can be further improved.

  Further, in this cushion 10, the fluid supply / exhaust port 17 provided in the fluid cushion main body 11 is disposed between the sealing portion 15 and the bent portion 21 on the lower side of the core material 19. 19 or the like, and it is possible to prevent the fluid pressure from acting off directly.

  Further, if the fluid to be put into the fluid cushion body 11 is only water and preservatives, it is possible to simplify operations such as management and measurement by temperature and humidity as compared with the case where a gel-like substance is used. it can.

  Further, according to this cushion 10, even when sitting down to fall on the cushion 10, the fluid such as water in the fluid cushion main body 11 and a gel-like substance move by the narrowing effect due to the narrow gap in which the bent portion 21 is almost in close contact. The impact pressure generated in the liquid such as water or the gel-like substance is prevented from being directly applied to the sealing portion 15.

  As a result, damage to the sealing portion 15 of the fluid cushion body 11 can be prevented, durability can be improved, and one side of a liquid such as water or a gel-like substance can be further suppressed to uniformly support the body. it can.

  Further, in this cushion 10, a cover 23 is provided so as to cover the entire outermost part, and a dot processing with a synthetic resin is applied to the bottom surface thereof as a non-slip portion 23b. In addition, by attaching the handle 23c to the front side surface, the front back surface, etc., the handle 23c can be easily attached / detached or transported by holding it with one hand. In particular, by attaching the handle 23c to the front and back surfaces, it is difficult for the hand of a person sitting on the wheelchair seat to be caught on the handle 23c, and the usability can be improved.

  In this embodiment, the cover 23 or the material of the seat on which the cushion is placed does not provide the slip prevention portion 23b, and the cover can be kept in a stable state. It is also possible to omit the slip prevention part.

  Furthermore, in the said embodiment, although the cushion mounted in the seat of a wheelchair was demonstrated to the example, it can also apply to the cushion of not only this but another seat and chair.

It is a schematic perspective view which shows the manufacturing process of the fluid cushion main body concerning one Embodiment of the cushion of this invention. It is a partial expanded sectional view of the attaching part to the core material of the fluid cushion main body concerning one Embodiment of the cushion of this invention. It is the schematic exploded perspective view and schematic perspective view of the elastic cushion member concerning one Embodiment of the cushion of this invention. It is the external appearance perspective view, longitudinal cross-sectional view, and cross-sectional view of the cushion concerning one Embodiment of the cushion of this invention. It is a schematic perspective view of a conventional cushion, a cross-sectional view, and an explanatory view of a use state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cushion 11 Fluid cushion main body 12 Airtight watertight sheet | seat 13 Sealing part (front-and-rear end part)
14 Sealing part (left and right outer edges)
15 Sealing part (right and left inner edges)
16 Suspended cloth (suspended cloth member)
16a welded portion 16b communication hole 17 supply / discharge port 18 cap 19 core material 20 hook 21 bent portion 22 elastic cushion member 22a frame body 22b upper plate portion 22c lower plate portion 22d non-adhesive portion 22e front slip prevention portion
22f Inclined surface 23 Cover 23a Fastener 23b Non-slip portion 23c Handle L1 Core length B1 Core width L Cushion body length B Spacing 15 spacing X Left-right direction Y Front-back direction

Claims (3)

The front and rear end portions of the airtight and watertight sheet are connected to provide a sealing portion, and double sealing portions are provided on both side end portions and the inner side portion of the sheet to form a bag shape. A fluid cushion body that connects the upper and lower surface sheets and has a suspension cloth member having a communication hole, and puts fluid inside;
A core material to which the fluid cushion body is attached to the back surface of the fluid cushion body;
An elastic cushion member formed of an elastic body covering the fluid cushion main body attached to the core material;
A cushion provided with a cover covering the outside of the elastic cushion member,
The width of the core material is smaller than the interval between the sealing portions inside the double sealing portion,
The fluid cushion main body is attached by forming a bent portion by wrapping around the core material so as to be bent further inside the double sealing portion,
The anti-slip portion before protruding upward is formed at the front portion of the seating surface of the elastic cushion member so as to stabilize the front and back of the cushion, while the suspension cloth member of the fluid cushion body is provided so as to stabilize the left and right of the cushion. A cushion characterized by being arranged in the front-rear direction.   The cushion according to claim 1, wherein an inner portion of the elastic cushion member that is in contact with an outer portion of the fluid cushion main body is configured by an inclined surface that sags downward.   The cushion according to claim 1 or 2, wherein the fluid supply / exhaust port provided in the fluid cushion main body is provided between a sealing portion and a bent portion located below the core member.

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