JPWO2009001567A1 - Cushion for bedding, mat for bedding, and method for manufacturing bedding cushion - Google Patents

Abstract

[PROBLEMS] To provide a cushion for bedding that is lightweight as a bedding, has a good center-of-gravity mobility when the user goes to bed, has excellent liquid followability (fluidity) when the center of gravity moves, and can disperse body pressure appropriately. Provided is a mat and a method for manufacturing a cushion for bedding. A cushion for bedding according to the present invention comprises a cushion body 1 formed by thermally welding two upper and lower flexible synthetic resin sheets to form a liquid storage portion 2 capable of storing a liquid therein, and a liquid storage portion. The liquid can be flowed between the weir portions 3 to 14 that divide 2 into regions of a predetermined size (region A to region E) and the regions (region A to region E) divided by the weir portions 3 to 14 It is mainly comprised from the orifice part (av).

Description

  The present invention relates to a bedding cushion, a bedding mat, and a method for manufacturing a bedding cushion in which a liquid is disposed inside to disperse a user's body pressure.

Conventionally, in order to prevent bed slipping of a bedridden patient or to realize a comfortable sleep, a water bed in which a liquid bag filled with a large amount of liquid such as water is arranged in the entire bedding has been developed. This water bed receives the body pressure of the user and the bed surface is greatly depressed to disperse the body pressure. Further, as shown in Patent Document 1, there is a fluid pressure utilization mat in which a liquid bag is partitioned into a plurality of regions by partition walls, and the regions communicate with each other through orifice holes.
JP 2000-23793 A

  Conventional water beds and mats using fluid pressure are filled with a large amount of liquid, are large as bedding, and have increased in weight. Therefore, in some cases, it is necessary to reinforce the floors and pillars of the house in order to install them. In addition, the conventional water bed and fluid pressure mat have a body pressure dispersion effect, but the water bed and fluid pressure mat respond sensitively to human movements, and the user sinks at bedtime. There is a drawback that it is loose or swaying, lacks stability, and the user cannot freely move the center of gravity (such as turning over) while sleeping.

  The present invention has been made in view of such circumstances, is lightweight as a bedding, has a good center of gravity mobility at the time of user sleep, excellent liquid followability (fluidity) at the time of center of gravity movement, An object of the present invention is to provide a bedding cushion and a bedding mat capable of suitably dispersing body pressure, and to provide a method for manufacturing a bedding cushion.

  In order to achieve such an object, the present invention provides a liquid storage portion in which flexible synthetic resin sheets are superposed and their entire peripheral edge portions are fused together, and liquid is enclosed therein so as to be able to flow. A dam part formed by integrally fusing the cushion resin body and the synthetic resin sheet, and when a person sleeps on the cushion body, the person's waist (sacrum), hips and thighs A bedding comprising: a plurality of weir portions that respectively divide the liquid storage portion into regions that roughly contact each other; and an orifice portion through which the liquid flows in and out between the plurality of regions divided by the dam portions. A cushion is provided.

  In the cushion for bedding according to the present invention, a cushion main body having a liquid storage portion in which flexible synthetic resin sheets are overlapped and their entire peripheral edge portions are integrally fused, and liquid is encapsulated in a flowable manner therein. In addition to showing suitable body pressure dispersion performance when sleeping, the liquid storage part corresponding to the human waist, buttocks and thighs is divided by the weir part and has an orifice part. The center of gravity (such as turning over) can be moved quite freely without the user sinking greatly at bedtime, and there is no sudden movement or vibration of the liquid when the center of gravity moves. Is excellent. Further, a relatively small amount of liquid is sealed in a liquid storage space formed by fusion from a flexible synthetic resin sheet (thickness of 2000 μm or less, preferably 1000 μm or less), and the sheet is composed of a plurality of weir portions. Since it is fused, the cushion body can be made relatively thin and lightweight, so that the mat for bedding does not become a large bedding and can be easily moved and installed.

  In the present invention, the cushion body has a plurality of side dam portions that further divide the region of the liquid storage portion in contact with the waist, and the side dam portions extend from the head of the human body to the toes. Since it has an angle of approximately 5 ° to 60 ° with respect to the direction in which it is directed, the liquid in the cushion body moves even when the person rolls over and moves in the lateral direction. The body fluids easily follow the movement and there is no sudden movement or vibration of the liquid, so that the body pressure of the lower back can be more effectively distributed, bedsores can be reduced, and comfortable sleep can be realized.

  Further, according to the present invention, the orifice portion is formed so that the liquid can follow and flow with a certain time delay when the user moves the center of gravity. Can be perceived sensuously when the liquid in the cushion body follows the human posture change well.

  In the present invention, the liquid is water or a mixed liquid of water and a polyhydric alcohol. If the liquid enclosed in the storage space of the cushion body is water, a cushion for bedding can be manufactured at a lower cost, and the liquid enclosed in the storage space of the cushion body is a mixture of water and polyhydric alcohol. If this is the case, the followability can be adjusted with an appropriate viscosity, and the liquid can be prevented from freezing in the cushion body. This is preferable because it can be suppressed.

  In the bedding cushion according to the present invention, as shown in FIG. 14, in the bedding cushion main body, the left and right weir portions 84 that divide the region A corresponding to the waist (sacrum) and the buttocks and the region B corresponding to the thighs. And 86 are formed so as to be biased toward the left and right end portions, both of which are dam portions that are 4/10 to 9/10 of the length of the dam portions 85 and 87, The portions 84 and 86 are disposed near or above the upper end of the weir portion 89 disposed in the vertical direction at the left and right central portions, and as a result, the region A corresponding to the waist and the buttocks and the region corresponding to the thighs The bedding cushion in which a region F for containing liquid that contacts the ischium and tailbone is formed between B and the upper body portion of the bed when the gage-up type bedding bed is used. Gage up to ~ 70 ° Even in the cushion for bedding, the body pressure dispersibility in the user's seat bone part and coccyx part is excellent.

  In the bedding cushion according to the present invention, as shown in FIG. 14, in the bedding cushion main body, an elliptical weir 90 at the left and right central part of the upper part of the region A corresponding to the waist (sacrum) and the buttocks, The bedding cushion provided with a pair of elliptical weirs 91 and 92 on both the left and right sides in the vicinity of the upper and lower central part of the area A is used for gage-up when used in the above-mentioned bed-up type bedding bed. The body pressure dispersibility in the sciatic bone and coccyx is better.

  Furthermore, in the cushion for bedding according to the present invention, a flexible synthetic resin sheet is overlaid and the entire peripheral part thereof is integrally fused, and a liquid storage part in which liquid is sealed so as to flow is provided. A cushion body, and a weir portion formed by integrally fusing the synthetic resin sheet, a plurality of weir portions separating the liquid housing portion, and the liquid housing portion partitioned by the weir portion The cushion member X for the lumbar region provided with the orifice portion through which the liquid flows in and out, and the flexible synthetic resin sheet are superposed and the entire peripheral portion thereof is integrally fused, and the inside thereof is formed. A tailbone, a seatbone, and a thigh cushion member Y having a liquid storage portion in which liquid is encapsulated in a flowable manner, and a weir portion formed by fusing the synthetic resin sheet integrally; Liquid container A cushion member Y for a seat bone, a tailbone, and a thigh having a plurality of weir portions to be divided and an orifice portion through which the liquid flows in and out of the plurality of liquid storage portions divided by the weir portions, and the cushion The member X is disposed so that it substantially contacts the waist of the person, and the cushion member Y is disposed so as to correspond to the ischia, tailbone and thigh, and the cushion The bedding cushion in which the members X and Y are connected and the cushion body is formed also has excellent body pressure dispersibility in a normal bed, and when used for the above-mentioned gage-up type bedding bed, Excellent body pressure dispersibility in the user's seat bone and coccyx when gadging up.

  In the bedding cushion of the present invention, a mat member for bedding made of an elastic sheet material for bedding such as organic synthetic fiber, natural fiber, or foam synthetic resin is laminated on at least one side of the bedding cushion body. In addition, the cushion for bedding that is integrally bonded together has more stable and improved cushioning properties (body pressure dispersibility) and can prevent bed slipping even when sleeping for a long time.

  Further, in the bedding mat of the present invention, if the above-mentioned various types of bedding cushions are necessary, the bedding mat is integrally housed in a flexible bag together with the bedding mat member made of other elastic material for bedding. A mat for bedding is provided.

  And in the mat for bedding of the present invention, a flexible synthetic resin sheet is overlaid and the entire peripheral part thereof is fused together, and a liquid storage part in which liquid is sealed so as to flow inside A dam part formed by integrally fusing the cushion resin body and the synthetic resin sheet, and when a person sleeps on the cushion body, the person's waist (sacrum), hips and thighs A bedding comprising: a plurality of weir portions that respectively divide the liquid storage portion into correspondingly substantially abutting regions; and an orifice portion through which the liquid flows in and out between the plurality of regions divided by the dam portions The cushion body is overlaid on at least one surface of the cushion body with a mat member for bedding made of an elastic sheet material for bedding such as organic synthetic fiber, natural fiber, or foam synthetic resin, for example, Were housed together in a flexible bag, such as made of synthetic resin, there is provided a bedding mat.

  As a mat member for bedding to be overlapped on at least one side of the cushion body, an elastic sheet material made of an organic synthetic fiber such as polyester fiber, polyacrylonitrile fiber, nylon fiber, or an elastic sheet made of natural fiber such as cotton or wool Materials or elastic sheet-like materials made of foamed synthetic resin (made of porous synthetic resin) such as urethane can be preferably mentioned, and those are, for example, mattress shape, blanket shape, urethane mat shape Can be mentioned.

  Furthermore, in the present invention, the synthetic resin sheets are overlapped and their peripheral portions are integrally fused, and a liquid is accommodated therein (hereinafter referred to as “liquid accommodating space”) and an opening. A cushion body is formed, and a synthetic resin sheet superposed on a portion to be a dam portion in the cushion body is fused to form a dam portion and an orifice portion, and has the fused peripheral edge portion and an opening portion. The liquid containing space, the weir portion, and the orifice portion are filled with the liquid by injecting the liquid into the liquid containing space from the opening, and finally the opening is fused to inject the liquid. Since the filled liquid storage portion is sealed, it is possible to prevent gas from being mixed into the storage space, and to provide a method for manufacturing a cushion for bedding relatively easily and inexpensively.

  The cushion for bedding according to the present invention has a liquid important part in which a flexible synthetic resin sheet is overlapped and the entire peripheral part thereof is integrally fused, and the liquid is sealed in a flowable manner therein. A dam part formed by fusing the cushion body and the synthetic resin sheet together, and when a person sleeps on the cushion body, it corresponds to the person's waist (sacrum), hips and thighs And a plurality of weir portions that respectively divide the liquid storage portion into regions that substantially come into contact with each other, and (if necessary, a plurality of side dam portions that divide regions that abut against the waist and the buttocks). Since the orifice portion through which the liquid flows in and out between the plurality of regions is provided, the cushion does not become so thick and the amount of liquid to be accommodated can be made relatively small. Easily lay down at bedtime When the center of gravity is moved by turning over, the fluid in the cushion body is excellent in followability (fluidity) and body pressure can be dispersed appropriately. For example, even if an elderly person sleeps for a long time, bed slipping, etc. Can be prevented.

  As described above, the cushion for bedding of the present invention is formed by laminating flexible synthetic resin sheets and fusing the entire peripheral edge thereof integrally, and the liquid is sealed in such a manner that the liquid can flow therein. A cushion body having a housing part and a weir part formed by integrally fusing the synthetic resin sheet, and when a person sleeps on the cushion body, a person's waist (sacrum), buttocks and thick A plurality of weirs that divide the region that abuts roughly corresponding to the thigh, and (if necessary, a plurality of side dams that divide the region that abuts the waist and buttocks). And an orifice part through which the fluid flows in and out between a plurality of regions.

  In the bedding cushion according to the present invention, in the bedding cushion main body, the left and right weir portions 84 and 86 that divide the region A corresponding to the waist (sacrum) and the hips and the region B corresponding to the thigh are left and right. The dam portions are formed in a biased direction toward the end portion, and are both 4/10 to 9/10 of the length of the dam portions 85 and 87, and the dam portions 84 and 86 are It is arranged near or above the upper end of the weir part 89 arranged in the vertical direction in the left and right central part, and as a result, between the area A corresponding to the waist and the buttocks and the area B corresponding to the thigh part, The present invention provides a bedding cushion in which an area F for storing liquid that comes into contact with the ischium and tailbone is formed.

  Furthermore, the cushion for bedding of the present invention comprises the cushion member X for the user's lower back as described above, and the cushion member Y for the user's seat bone, tailbone and thigh, and the cushion member X is a human. The liquid storage portion is arranged so as to substantially contact with the waist of the body, and the cushion main body Y is arranged with the liquid storage portion corresponding to the sciatic bone, the tailbone and the thigh, and the cushion members X and Y The cushion for bedding in which the cushion main body is formed by being connected is provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing a bedding cushion (round cushion) according to an embodiment of the present invention. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 3 is a front view showing a sleeping state of a person using a mat for bedding in which a cushion for bedding on which mat members are stacked is used.

  As shown in FIGS. 1 and 2, the cushion for bedding of the present invention is a cushion formed by thermally welding two upper and lower flexible synthetic resin sheets to form a liquid containing portion 2 in which liquid is enclosed. The main body 1, the weir portions 3 to 6 that divide the liquid storage portion 2 into regions of a predetermined size (the human waist (sacral region) and the buttocks region A, the thigh regions B and C), and the liquid storage portion 2 Side dam portions 7 to 10 that are divided by regions of a predetermined size (waist region and buttocks region A, intermediate region D, side region E), and an elliptical shape disposed between dam portions 3 and dam portions 7 Weir portions 11 and 12, a weir portion 13 that divides regions B and C left and right, a dam portion 14 that divides regions D and E left and right, and a region (regions A to A divided by the weir portions 3 to 14) It is mainly comprised from the orifice part (av) which can flow a liquid between area | regions E).

  The cushion main body 1 has a substantially rounded rectangular shape as a whole, and is formed so that the sacrum of the user matches the region A when the upper part of the figure is arranged on the head side. The material of the cushion body 1 is rich in elasticity and has predetermined durability and flexibility, so that the liquid does not substantially permeate in a short time and can seal the liquid for at least three months. For example, an ethylene-vinyl acetate copolymer (EVA) or another material (such as various plastics or synthetic resins) can be used. Thus, the cushion body 1 is hermetically sealed at the welded portion 1a at the edge, and can hold the liquid in the liquid storage portion 2 so as to flow and can be sealed for a long period of time. The size of the cushion body 1 may be set in a range of 400 to 800 mm in length and 400 to 800 mm in width (particularly preferably 450 to 650 mm in length and 450 to 650 mm in width). For example, in FIG. It can be. The cushion body 1 preferably has a maximum thickness of 0.5 to 5 cm, particularly 1 to 4 cm after being filled with liquid.

  The liquid stored in the liquid storage unit 2 may be a fluid liquid having a viscosity of 1 to 5000 centipoise (cp), particularly 10 to 2000 cp at room temperature. For example, water or an aqueous solution of a polyhydric alcohol (particularly water and water). An antifreeze mixed liquid obtained by mixing propylene glycol or the like). If the liquid is water, a cushion for bedding can be manufactured at a lower cost, and if the liquid enclosed in the liquid container is a mixed liquid of water and polyhydric alcohol, the liquid is contained in the cushion body. Freezing can be avoided, and even when used for a long period of time, it is possible to prevent the cushion body from penetrating to the outside. The liquid stored in the liquid storage unit 2 may be water only (including a liquid containing a trace amount of additives) or only polyhydric alcohol. The mixed liquid of water and a polyhydric alcohol should just be about 90: 10-30: 70, especially about 80: 20-35: 65, for example, water: polyhydric alcohol.

  The dam portions 3 to 14 are formed by thermally welding two synthetic resin sheets (a synthetic resin sheet having a thickness of 10 to 1000 μm, particularly 50 to 800 μm), and dividing the liquid storage portion 2 into regions A to E. To do. When the user lies down on the cushion for bedding, the region A touches the waist (sacrum) and the buttocks, the regions B and C touch the thigh, and the liquid in the region A Areas D and E are areas for escape to both sides. Weirs 3 and 5 are formed to separate region A and region B, weirs 4 and 6 are formed to separate region B and region C, and sideways to separate region A and region D. The dam portions 7 and 9 are formed, the side dam portions 8 and 10 are formed in order to separate the region D and the region E, the dam portion 13 is formed in order to separate the regions B and C left and right, and the region A A dam portion 14 may be formed for separating a part of the dam.

  Here, the region A is set to have the largest area compared to other regions (a flat area of about 30 to 60%, particularly about 35 to 50% with respect to the total area of the cushion body), and the human waist And it is comprised so that a collar part can be hold | maintained reliably. Regions B and C are each set to have a smaller area than region A, and become a resistance when the liquid flows in.

  The dam portions 3 and 5 are for separating the regions A, D, and E from the region B, and the orifice portions a, b, e, and f are formed with both ends thereof being separated. Such orifices a, b, e, and f can flow in and out of the liquid between the regions A, D, and E and the region B. When a load is applied, the liquid in the regions A, D, and E flows toward the region B, and when a load is applied to the region B, the liquid in the region B is in the regions A, D, and E. And it is comprised so that it may flow toward the area | region C. FIG. The weir portions 3 and 5 have a linear shape or an arc shape, and an imaginary line connecting the end portions is an angle (θ1) of 60 ° to 90 ° with respect to the direction from the head of the human body toward the toes. )have.

  The weir portions 4 and 6 are for separating the region C and the region B, and the orifices c, d, g, and h are formed with both ends thereof being separated. The orifices c, d, g, and h can cause liquid to flow between the region C and the region B. When a load is applied to the region C when the person is sleeping, the region The liquid of C flows toward the region B, and when a load is applied to the region B, the liquid of the region B flows toward the regions A, D, E and the region C. The weir portions 4 and 6 are linear or arc-shaped, and the imaginary line connecting the ends is an angle (θ2) of 60 ° to 90 ° with respect to the direction from the head of the human body toward the toes. )have.

  The side dam portions 7 and 9 are for separating the region A and the region D, and the end portions thereof are separated to form the orifice portions i, j, n, and p. Such orifices i, j and n, p can flow a liquid between the region A and the region D, and when the load is applied to the region A when a person is sleeping, the region The liquid of A flows toward the region D, and when a load is applied to the region D, the liquid of the region D flows toward the regions A and E. The side weir portions 7 and 9 are linear or arc-shaped, and the imaginary line connecting the end portions is approximately 5 ° to 60 ° with respect to the direction from the head of the human body toward the feet. It has an angle (θ3).

  The side dam portions 8 and 10 are used to separate the region D and the region E, and both ends thereof are spaced apart to form orifices k, m, q, and r. The orifices k, m, q, and r are capable of allowing liquid to flow between the region D and the region E. When a load is applied to the region D when a person is sleeping, the region The liquid of D flows toward the areas E and A, and when a load is applied to the area E, the liquid of the area E flows toward the area D. The side dam portions 8 and 10 are linear or arc-shaped, and the imaginary line connecting the end portions is approximately 5 ° to 60 ° with respect to the direction from the head of the human body toward the feet. It has an angle (θ4).

  The dam portion 13 is used to divide the region B and the region C into right and left, and orifice portions b, d, f, and h are formed between the dam portions 3 to 6. The weir part 14 is for partially dividing the region A into left and right, and adjusts the flow direction of the liquid in the upper part of the region A. In the weir portions 11 and 12, orifice portions s, t, u, and v are formed between the weir portions 3 and 7 and the weir portions 5 and 9, respectively.

  Furthermore, since each orifice part is formed so that the liquid can follow and flow with a certain time delay when the user moves the center of gravity, the cushion body 1 can be made to follow the change in the posture of the person satisfactorily.

  According to the above embodiment, the weir portions 3 to 14 that divide the liquid storage portion 2 in the cushion main body 1 into regions of a predetermined size, and the orifice through which the liquid flows between the regions that are separated by the dam portions 3 to 14 Since the parts a to v are provided, the followability of the liquid when the user moves the center of gravity is excellent, and the body pressure can be suitably dispersed with a light weight. That is, when a load is applied to the cushion body 1 during use while a person is sleeping, the liquid inside flows in a desired direction in substantially the entire area of the liquid storage portion 2 by the weir portions 3 to 14 and the orifice portions a to v. Thus, stable followability and dispersion of body pressure can be achieved.

  As shown in FIG. 3, bedding mat members 61 and 62 made of an elastic sheet-like material for bedding such as organic synthetic fiber, natural fiber, and foam synthetic resin are superimposed on the front and back surfaces of the cushion body 1, They can also be used by being housed in a bag made of woven fabric or the like. In this example, a mat member having a predetermined thickness is incorporated in the bag body in the head direction and the foot direction of the bedding mat members 61 and 62 including the cushion body 1 sandwiched between them. The mats 63 and 64 for bedding are arranged separately. Thus, when the mat is divided into three, they are connected, and the cushion body 1 can be disposed only on the mat for the bedding at the center. A person 60 lies on the bedding mat 62 and the normal bedding mats 63 and 64, which are made of a mat member for bedding in which the cushion body 1 is sandwiched. The lumbar part (sacrum) and the buttocks of the person 60 are arranged on the region A of the cushion body 1, and the thighs are arranged on the regions B and C. In this way, the body pressure of the waist, buttocks and thighs of the person 60 can be dispersed with the mat for bedding in which the cushion body 1 is sandwiched. Here, the mat member for bedding is overlapped on both surfaces of the cushion main body, but the present invention is not limited to this and can be disposed on at least one surface of the front surface or the back surface. In the present invention, the bedding cushion according to the present invention is configured in the central part of the bedding mat member or the normal bedding mat installed over the entire bedding mat without dividing the bedding mat into three. The cushion body can be inserted into the mat and housed, and used as the bedding cushion or bedding mat of the present invention.

Then, the manufacturing method of this cushion for bedding is demonstrated.
First, a synthetic resin sheet is superposed and the peripheral portions thereof are fused together, and a cushion body 1 having a space 2 (liquid storage space) for storing liquid and an opening (not shown) therein is provided. At the same time, the synthetic resin sheets superposed on the portions of the cushion body 1 that will be the weir portions 3 to 14 are fused to form the weir portions 3 to 14 and the orifice portions a to v. Here, the opening can be disposed, for example, at the upper end of the cushion body 1 in FIG. 1, and when the peripheral edge of the cushion body 1 is fused, the opening is not partially fused. Is.

  Next, the liquid is injected from the opening into the cushion body 1 having the fused peripheral edge portion and the opening, and the liquid storage space 2, the dam portions 3 to 14, and the orifice portions a to v. While degassing, fill with liquid. This liquid may be a fluid liquid having a viscosity of 1 to 5000 centipoise (cp), particularly 10 to 2000 cp at room temperature, and is obtained by mixing, for example, water or an aqueous solution of a polyhydric alcohol (especially water and propylene glycol). Non-freezing mixed liquid etc.).

  Finally, the liquid storage part of the cushion body 1 is maintained in a degassed state, the opening of the cushion body 1 is fused, and the liquid storage part 2 into which the liquid has been injected is sealed. Can produce bedding cushions.

Next, another embodiment of the cushion for bedding according to the present invention will be described.
FIG. 4 is a plan view showing a state in which a bedding cushion (square cushion) and an auxiliary cushion according to another embodiment of the present invention are combined.

  A bedding cushion 20 having a configuration similar to that of the bedding cushion described in FIGS. 1 and 2 and slightly smaller than that is disposed in the center of FIG. Two auxiliary cushions 40 and 50 having a rounded rectangular shape smaller than the bedding cushion 20 are disposed on both sides of the bedding cushion 20. The bedding cushion 20 and the two auxiliary cushions 40 and 50 can be integrally molded with the same sheet, or can be separately molded and arranged side by side. The auxiliary cushions 40 and 50 are for receiving body pressure when a person rolls over and moves, or when a foot or the like is moved to the side of the body, and disperses it. The bedding cushion 20 and the auxiliary cushions 40 and 50 are sandwiched between bedding mat members (not shown) made of an elastic sheet material such as organic synthetic fiber, natural fiber, and foam synthetic resin. Can do.

  The bedding cushion 20 is formed in the cushion main body 21 and the cushion main body 21 having a liquid storage portion formed from a flexible synthetic resin sheet, like the bedding cushion described in FIGS. 1 and 2. Between the area containing the liquid container 22, the dam parts 23 to 34 that divide the liquid container 22 into areas of a predetermined size, and the areas that are divided by the dam parts 23 to 34. Inflow and outflow orifices are provided. The dimension is preferably 400 to 650 mm in length and 400 to 650 mm in width (particularly preferably 450 to 600 mm in length and 450 to 600 mm in width). For example, in the cushion 20 for bedding in FIG. The width can be 470 mm.

  The auxiliary cushion 40 or 50 includes a cushion main body 41 or 51 formed of a flexible synthetic resin sheet and having a liquid storage part, and a liquid storage part 42 or 51 formed in the cushion main body and enclosing the liquid in a flowable manner. 52, and the weir portions 43 to 45 or the weir portions 53 to 55 that divide the liquid storage portion into regions of a predetermined size, and the orifice portion through which liquid flows in and out of the regions divided by the dam portions, respectively. Prepare. The dimensions of these auxiliary cushions can be set to, for example, 560 mm in length and 120 mm in width.

Next, experimental results for demonstrating the effect of the cushion for bedding will be described.
FIG. 5 is a front view showing the bedding used in the experiment for demonstrating the effect of the cushion for bedding. FIG. 6 is a diagram showing a body pressure distribution when a cotton mat is used for the entire lower part of the bedding mat without using the bedding cushion. FIG. 7 shows the use of the round cushion of Example 1 in the central region (near the sacrum) of the lower part of the bedding mat, using a cotton mat for the head region and the foot direction region of the lower part of the bedding mat. It is a figure which shows the body pressure distribution when there is. In FIG. 8, the cotton mat is used for the head region and the foot direction region of the lower part of the bedding mat, and the square cushion of Example 2 is used for the central region (near the sacrum) of the lower part of the bedding mat. It is a figure which shows the body pressure distribution in the case. FIG. 9 is a diagram showing a body pressure distribution when neither a cotton mat nor a bedding cushion is used. FIG. 10 is a view showing a body pressure distribution in the case where the round cushion of Example 1 is used at the lower central portion (near the sacrum) of the mat for bedding and no cotton mat is used. FIG. 11 is a view showing a body pressure distribution in the case where the rectangular cushion of Example 2 is used in the lower central portion (near the sacrum) of the mat for bedding and no cotton mat is used. FIG. 12 is a diagram comparing the maximum body pressure values when the knees are stretched. FIG. 13 is a diagram comparing body pressure maximum values in a state where the knee is bent.

  As shown in FIG. 5, in the bedding used in the experiment, a thick sheet 71 having a thickness of about 10 mm is laid on the bed, and cotton mats 72 and 73 having a thickness of 25 mm are formed on the upper portion corresponding to the head and feet. And a cushion 74 for bedding is placed between the two cotton mats 72, 73, a mat 75 having a thickness of about 20 mm is laid on them, and a cotton duvet having a thickness of about 30 mm is placed thereon. The subject lay down on it. Here, for comparison, when a cotton mat is arranged in place of the bedding cushion of FIG. 5 and three cotton mats are arranged (FIG. 6), a round cushion is used as the bedding cushion 74 of FIG. 5 (FIG. 7), when a square cushion is used as the bedding cushion 74 of FIG. 5 (FIG. 8), when the two cotton mats and the bedding cushion of FIG. 5 are not used at all (FIG. 9), When the round cushion 74 is arranged near the sacrum without using two cotton mats (FIG. 10), and when the square cushion 74 is arranged near the sacrum without using the two cotton mats of FIG. 5 (FIG. 11). ) Was measured for body pressure distribution. Body pressure distribution was measured mainly near the sacrum. The test subject is an elderly male test subject (65 years old, height 166 cm, weight 72 kg, BMI (body mass index) 26.1).

  The cushion for bedding is made of an ethylene-vinyl acetate copolymer (vinyl acetate unit 20%), the thickness of the sheet forming the cushion body is 600 μm, and the liquid type is a mixture of water 50 and propylene glycol 50. The liquid (room temperature viscosity: 1000 cp) and sheet fusing method is the high frequency fusing method.

  As shown in FIG. 6, when three cotton mats are arranged without using the bedding cushion, the maximum body pressure value is about 48 mmHg in the vicinity of the sacrum. As shown in FIG. 7, when a round cushion is used between two cotton mats, the maximum body pressure value in the vicinity of the sacrum is about 34 mmHg, and the case where no bedding cushion is used is 1. It has decreased to about 71. As shown in FIG. 8, when a square cushion is used between two cotton mats, the maximum body pressure value in the vicinity of the sacrum is about 40 mmHg, and the case where the bedding cushion is not used is 1. It has decreased to about 84. As shown in FIG. 12 (three bar graphs on the left), it was found that using the bedding cushion significantly reduced the maximum body pressure value compared to when the bedding cushion was not used.

  As shown in FIG. 9, when the cotton mat and the bedding cushion are not used, the maximum body pressure value is as high as 73 mmHg near the sacrum. As shown in FIG. 10, in the case where two cotton mats are not used and a round cushion is used at the center, the maximum body pressure value near the sacrum is about 38 mmHg, and the case where no bedding cushion is used is 1 Then, it is greatly reduced to about 0.51. As shown in FIG. 11, when a square cushion is used without using a cotton mat, the maximum body pressure value in the vicinity of the sacrum is about 39 mmHg, and the case where no bedding cushion is used is about 0.53. It has decreased greatly. As shown in FIG. 12 (three bar graphs on the right), when a cushion for bedding is placed near the sacrum without using two cotton mats, the maximum body pressure value is about half, The pressure can be suitably dispersed.

  As shown in FIG. 13, when the test is performed as shown in FIGS. 6 to 11 with the subject bending the knee, the case where the bedding cushion is used is compared with the case where the bedding cushion is not used. The maximum body pressure value decreases. The maximum body pressure is about 72 mmHg when three cotton mats are arranged, and about 53 mmHg when two cotton mats and a round cushion are used. Two cotton mats and a square cushion Is used, it is about 56 mmHg. When a cotton mat and a cushion for bedding are not used, it is about 88 mmHg, without using a cotton mat, and when a round cushion is used near the sacrum, it is about 66 mmHg, without using a cotton mat, near the sacrum. When a square cushion is used, the height is about 69 mmHg. Thus, even when the knee is bent, the body pressure can be suitably dispersed by using the bedding cushion.

FIGS. 14 and 15 are bedding cushions according to Embodiments 3 and 4 of the present invention, and show various forms of bedding cushions used in bedding mats that can be suitably used for gadget-up type beds. It is.
The gadget up type bed, the gadget up type bedding mat, and the gage up type bedding cushion will be described respectively.
In a gage-up type bed, if the bed is gaged up, the bed user's body moves from the supine position to a position close to the sitting position.
Therefore, the body pressure at the sacrum of a person with a high incidence of pressure ulcers generally decreases gradually as the bed is gaged up (the angle of the upper body of the bed is raised to about horizontal to 75 °). The seat pressure at the coccyx and the sciatic region of the human is greatly increased.

FIG. 14 relates to a bedding-up bed bedding cushion I (hereinafter also referred to as “improved type I”), which is an improvement of the bedding cushion according to the first embodiment of the present invention.
In the improved type I bedding cushion, the tailbone and seatbone are not provided with special weirs, and the liquid contained in the bedding cushion is lowered downward by gravity, so that the person can The region F corresponding to the coccyx and the scapula is accumulated in the region F, and the user's seat pressure (body pressure corresponding to the coccyx and the scapula) is dispersed by the liquid in the region F. It is of a type that is quite wide.

The improved type I bedding cushion I substantially has the structure of the bedding cushion (FIGS. 1 and 2) used in Example 1, and has the following structural features. Yes.
In the improved type I, a small dam 90 is provided at the left and right central part of the upper part of the region A corresponding to the waist and the buttocks, and a pair of small dams 91 and 92 are provided on both sides of the upper and lower central part of the region A. Yes, the bed cushion I is easy to bend when the bed is gage-up. Thus, in the improved type I, in the cushion body, two synthetic resin sheets are overlapped to form a liquid storage portion, and when the liquid is filled, the thickness of the cushion body can be prevented from being increased by the filled liquid. In addition, various flow paths for the liquid can be formed in the liquid storage portion of the cushion body.

  In the improved type I, the left and right weir portions 84 and 86 separating the region A and the region B are formed so as to be biased toward the left and right end portions, respectively. Further, the weir portions 84 and 86 are relatively shorter than the upper end of the weir portion 89 arranged in the vertical direction at the left and right central portions. Since it is arranged upward in the left-right direction and, as a result, forms a wide area F in which liquid corresponding to the tailbone and the seatbone portion is accommodated, the seating pressure of the user (in particular, The body pressure corresponding to the coccyx and the scapula is effectively distributed.

  Further, in the improved type I, the cushion body is provided with through holes 94 and 96 at both ends of the long dam portions 80 to 87, and three through holes are provided in the thick dam portions 88 to 89, respectively. Since the holes 93 and 97 are provided, and the through hole 95 is provided in the center of the small type of dam portions 90 to 92, the cushion I for bedding I of this improved type I is used. The breathability of the cushion body is imparted, which makes the user comfortable when the user is sleeping and is more preferable. The through-hole may be any shape as long as it has a cylindrical shape, a slit shape, or any other shape that can impart air permeability.

FIG. 15 relates to a bedding-up bed bedding cushion II (hereinafter, also referred to as “improved type II”), which is a significant improvement of the bedding cushion according to the first embodiment of the present invention.
In the improved type II bedding cushion, the cushion member corresponding to the portion corresponding to the waist is considerably improved structurally compared to the integrated cushion body of the bedding cushion in improved type I. The cushion body Y is formed by connecting X and the cushion member Y corresponding to the part corresponding to the buttocks and thighs. As a result, in the cushion member Y corresponding to the human tailbone and the seatbone part at the time of gage up The seat pressure of the user (body pressure corresponding to the coccyx and seat bone) is reliably dispersed.

In the improved type II bedding cushion II, the structure of the bedding cushion used in Example 3 (improved type I, FIG. 14) is substantially divided and as shown in FIG. It has the following structural features.
As described above, the improved type II bedding cushion II is roughly composed of a cushion member X for the user's waist and a cushion member Y for the user's seat bone, tailbone and thigh. The liquid container is arranged so that X substantially contacts the waist of the person, and the cushion main body Y is arranged with the liquid container corresponding to the scapula, tailbone and thigh, and the cushion member A cushion for bedding in which X and Y are connected to form a cushion body.

  Each “liquid container” in the cushion member X for the lumbar region in the cushion II for the improved type II and each “liquid container” in the cushion member Y for the tailbone, the seatbone, and the thigh are independently provided. Since it is sealed and the liquid of the cushion member X does not flow into the cushion member Y at the time of gage-up, the seat pressure dispersibility of the user can be ensured.

Cushion members X and Y for the lumbar region in the improved type II bedding cushion II are made by laminating flexible synthetic resin sheets and fusing the entire peripheral edge together to allow fluid to flow inside. A cushion member having a liquid storage portion enclosed in the container, and a dam portion formed by integrally fusing the synthetic resin sheet, and a plurality of dam portions for partitioning the liquid storage portion and the dam And an orifice portion through which the liquid flows in and out in the liquid storage portion divided by the portion.
In the improved type II, the cushion member X and the cushion member Y are in a state of containing liquid separately, so that when the bed is gage-up, the cushion body can be easily bent at the connecting portion between them. It is preferable because it is possible.

  As shown in FIG. 15, for example, the cushion member X is provided with long type weir portions 98, 99, 100, and 101 at the upper portion, forming regions D and E in which liquid is stored, Furthermore, small dam portions (for example, elliptical dam portions) 105, 106, 107 are provided, and further, long type dam portions 102, 103 are provided and are surrounded by the dam portions. Region A is formed.

  As shown in FIG. 15, for example, the cushion member Y has long type dam portions 112, 113, 114, and 115, and forms a region F corresponding to the coccyx and the scapula, and a small dam. Parts 116 and 117 are formed, and regions B and C corresponding to the thighs are formed. In the cushion member Y of the improved type II cushion body, the seat pressure dispersibility in the user's tailbone and seatbone is reliably realized when the bed is gauged up.

  In the improved type II bedding cushion shown in FIG. 15, the cushion members X and Y are overlapped with the synthetic resin sheets in the same manner as in the method of manufacturing the cushion body of Example 1, and the peripheral portions thereof are integrally fused. The cushion members X and Y each having a space (liquid storage space) for storing the liquid and an opening (not shown) therein are formed, and the cushion members X and Y are portions in the portions that serve as the weirs. The overlapped synthetic resin sheets are fused to form the weir portion and the orifice portion, respectively. Here, it is preferable to arrange the openings at the upper ends of the cushion members X and Y, for example.

  Next, while having the fused peripheral edge portion and the opening portion, liquid is injected from each opening portion into the cushion member having the liquid accommodation space, the weir portion, and the orifice portion, and deaerated. Fill with liquid. This liquid may be the same as that used in the cushion main body in the first embodiment.

  Finally, maintaining the liquid storage portions of the cushion members X and Y in a degassed state, fusing each opening of each cushion member, sealing each liquid storage portion into which liquid has been injected, Furthermore, if necessary, the cushion members X and Y can be connected to produce an improved type II bedding cushion, which is a cushion body made of the cushion members X and Y.

  Further, even in the improved type II, in the cushion member X of the cushion main body, through holes 109 and 111 are provided at both ends of the long type weir portions 98 to 103, respectively, and two pieces are provided inside the thick type weir portion 104. Through-holes 108 are provided, and further, through-holes 110 are provided in the center portions of the small-type dam portions 105 to 107, and both ends of the long-type dam portions 112 to 115 are provided in the cushion member Y. Are provided with through holes 121 and 123 respectively, and one or three through holes 120 and 124 are provided inside thick type weir parts 118 and 118, respectively, and a smaller type weir part. Since through-holes 122 are respectively provided in the central portions of 116 to 117, when using this improved type II bedding cushion II , Has been granted the breathability of the cushion body, will be comfortable when the user is sleeping, it is more preferable.

The body pressure dispersibility was measured using the following four types of bedding cushions, and the results are shown.
The water mats A to D for bedding shown below are placed on a gadget-up type bed, and the gadget-up angle is changed from 0 ° to 75 °. The waist (sacrum) of the user (male weight in the 60s 70 kg) And body pressure dispersibility in the hip (coccyx and ischial), and the maximum body pressure (unit: mmHg) in the lumbar region (sacrum) and hip (coccyx and ischial) for each gadging angle is as follows. Shown in
Comparative example: a known mattress for a bed ((commercially available cushion for urethane bedding, Company P))
Example 1: Water mat for bedding (cushion for bedding + 3 cm urethane)
Example 3: Water mat for bedding (improved I bedding cushion + 3 cm urethane)
Example 4: Water mat for bedding (improved type II bedding cushion + 3 cm urethane)

The water mat for bedding using the cushion for bedding (FIGS. 1 and 2) shown in Example 1 of the present invention has a maximum body pressure at a gage-up angle of 0 ° and 15 °, compared to a commercially available bed mattress A. Although the value is low and good, it is higher than the commercial bed mattress A at 30 and 45 degrees.
However, in the bedding water mat using the bedding cushions (modified I Fig. 14 and improved II Fig. 15) shown in Examples 3 and 4 suitable for gage up, their body pressure maximum values are commercially available. The bed mattress, which is generally lower than the bed mattress and extremely good, is particularly superior in the bedding water mat D using the improved type II bedding cushion II (split type), which is lower in the entire range of the gage up angle. .
In the water mat of the present invention, the improved type I and II gage-up bedding cushions I and II of the present invention are used, and these improved bedding cushions are used by the user when the bed is gage-up. Ingenuity has been devised to collect fluid that improves body pressure dispersibility at locations corresponding to the coccyx and seat bone where the body pressure (seat pressure) becomes particularly large.

  Furthermore, the above-described improved type II bedding cushion (the cushion body in the improved type II bedding cushion shown in FIG. 15) may be further improved. In this case, the thick dam 104 in the upper center of the cushion member X in the improved type II cushion body is separated into a thick dam short dam and a small dam (elliptical), Further, the thick type dam part 119 at the center of the cushion member Y of the improved type II cushion body is separated into a thick type short dam part and a small dam part (elliptical), Other shapes (particularly, the positions and shapes of various weir portions) are preferably substantially the same as the cushion body of the improved type II bedding cushion.

  The further improved bedding cushion has all the characteristics of the improved bedding cushion, and when the cushion body in the improved type II is manufactured, the cushion members X and Y Since deaeration at the time of liquid injection | pouring to each liquid storage part is each performed effectively, it is preferable.

  The embodiment of the present invention has been described above, but the present invention is not limited to such an embodiment, and is merely an example, and various modifications can be made without departing from the scope of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and further, the equivalent meanings described in the scope of claims and all modifications within the scope of the scope of the present invention are included. Including.

  The bedding cushion, the bedding mat, and the bedding cushion manufacturing method according to the present invention are applied to the bedding cushion, the bedding mat, and the bedding cushion manufacturing method for realizing bed slippage prevention and comfortable sleeping for bedridden patients. it can.

It is a top view which shows the cushion for bedding (round cushion) which concerns on embodiment of this invention. It is the II-II sectional view taken on the line in FIG. It is a front sectional view showing the state at the time of use of the cushion for bedding on which mat members are superimposed. It is a top view which shows the state in which the cushion for bedding based on other embodiment of this invention (square cushion) and the auxiliary cushion are combined. It is a front sectional view showing the bedding used for the experiment for demonstrating the effect of the cushion for bedding. It is a figure which shows the body pressure distribution when not using the cushion for bedding at the time of using only a cotton mat. It is a figure which shows the body pressure distribution at the time of using the round cushion of the said Example 1 at the time of cotton mat use. It is a figure which shows the body pressure distribution at the time of using the square cushion of the said Example 2 at the time of cotton mat use. It is a figure which shows the body pressure distribution when not using a cotton mat and a cushion for bedding at all. It is a figure which shows the body pressure distribution at the time of using the round cushion of the said Example 1 at the time of cotton mat non-use. It is a figure which shows the body pressure distribution at the time of using the square cushion of the said Example 2 at the time of cotton mat non-use. It is the figure which compared the body pressure maximum value of the state which has extended the knee. It is the figure which compared the body pressure maximum value of the state which bent the knee. It is a top view which shows the cushion for bedding (improved type I) which concerns on other embodiment of this invention. It is a top view which shows the cushion for bedding (improved type II) which concerns on other embodiment of this invention.

Explanation of symbols

1, 21, 41, 51 Cushion body 2, 22, 42, 52 Liquid storage part (liquid storage space)
3-14, 23-34, 43-45, 53-55 Weir 60 people 61, 62 Mat member 63, 64 Mat 71 Sheet 72, 73 Cotton mat 74 Bedding cushion 75 Mat 76 Futon 93-96, 108-111 , 120 to 124 through holes a to v Orifice portion A to E region F region

Claims (12)

A cushion main body having a liquid storage portion in which flexible synthetic resin sheets are overlapped and the entire peripheral portion thereof is integrally fused, and the liquid is sealed in a flowable manner therein.
The dam part formed by integrally fusing the synthetic resin sheet, and when the person sleeps on the cushion main body, it roughly contacts the waist part (sacrum part) of the person, the buttocks and the thighs A plurality of weir portions that respectively divide the liquid storage portion into regions;
An orifice part through which the liquid flows in and out between a plurality of regions divided by the weir part; and
A cushion for bedding, comprising:   The cushion body has a plurality of side dam portions that further divide the region that contacts the waist, and the side dam portions are 5 ° to 60 ° with respect to the direction from the head of the human body toward the toes. The bedding cushion according to claim 1 having an angle of °.   The bedding cushion according to claim 1, wherein the orifice portion is formed so that the liquid can follow and flow with a certain time delay when the user moves the center of gravity.   The bedding cushion according to any one of claims 1 to 3, wherein the liquid is water or a mixed liquid of water and a polyhydric alcohol.   The bedding mat member made of an elastic sheet material for bedding made of organic synthetic fiber, natural fiber, foamed synthetic resin or the like is laminated and integrally bonded to at least one surface of the cushion body. The cushion for bedding according to Item.   In the cushion body for bedding, the left and right weir portions (84 and 86) that divide the region (A) corresponding to the lumbar region (sacral region) and the heel region and the region (B) corresponding to the thigh region are in the direction of the left and right ends. It is formed in a biased manner, and each is a weir part that is 4/10 to 9/10 of the length of the weir part (85 and 87), and further, the weir part (84 and 86) It is arranged near or above the upper end of the weir part (89) arranged in the vertical direction in the left and right central part, and as a result, an area (A) corresponding to the waist and hips and an area corresponding to the thigh ( The bedding cushion according to any one of claims 1 to 5, wherein an area (F) for storing a liquid that abuts against the ischium and the tailbone is formed between B and B.   In the cushion main body for bedding, an elliptical weir (90) in the left and right central part of the upper part of the region (A) corresponding to the lumbar part (sacrum) and the buttocks, and both left and right sides near the upper and lower central part of the region (A) The bedding cushion according to any one of claims 1 to 6, wherein a pair of elliptical weir portions (91, 92) are provided on the bed.   Cushion member (X) having a liquid storage portion in which a flexible synthetic resin sheet is superposed and the entire peripheral edge portion thereof is integrally fused, and liquid is sealed in a flowable manner therein, and A dam part formed by fusing a synthetic resin sheet integrally, and a plurality of dam parts dividing the liquid container part, and the liquid flowing in and out of the liquid container part divided by the dam part Cushion member (X) for waist, which has an orifice part to be overlapped, and a flexible synthetic resin sheet are superposed and the entire peripheral part thereof is fused together so that liquid can flow inside A cushion member (Y) for a seat bone, a tailbone, and a thigh having an enclosed liquid storage portion, and a weir portion formed by integrally fusing the synthetic resin sheet, the liquid storage portion A plurality of weirs, The cushion member (X) comprises a cushion member (Y) for the sciatic bone, the tailbone, and the thigh, which is provided with an orifice portion through which the liquid flows in and out of the plurality of liquid storage portions separated by the weir portion. The liquid storage portion is disposed so as to substantially contact with the waist portion of the body, and the cushion member (Y) is disposed with the liquid storage portion corresponding to the sciatic bone, the tailbone, and the thigh. A cushion for bedding, wherein a cushion body is formed by connecting X) and (Y).   The bedding cushion according to claim 7 or 8, wherein a plurality of through holes are formed in the plurality of dam portions in the bedding cushion main body.   The bedding cushion according to any one of claims 1 to 5 and claims 7 to 9 is integrally housed in a flexible bag body together with a mat member for bedding made of other elastic material for bedding, if necessary. A mat for bedding characterized by that. A cushion main body having a liquid storage portion in which flexible synthetic resin sheets are overlapped and the entire peripheral portion thereof is integrally fused, and the liquid is sealed in a flowable manner therein.
The dam part formed by integrally fusing the synthetic resin sheet, and when the person sleeps on the cushion main body, it roughly contacts the waist part (sacrum part) of the person, the buttocks and the thighs A plurality of weir portions that respectively divide the liquid storage portion into regions;
An orifice part through which the liquid flows in and out between a plurality of regions divided by the weir part; and
A cushion body for bedding provided with a bedding mat member made of an elastic sheet-like material for bedding such as organic synthetic fiber, natural fiber, or foam synthetic resin on at least one surface of the cushion body. The mat for bedding according to claim 10, wherein the mat is housed in a single bag. A synthetic resin sheet is overlaid and the peripheral portions thereof are fused together to form a cushion body having a space (hereinafter referred to as a “liquid storage space”) and an opening for containing a liquid therein, and Fusing the overlapped synthetic resin sheets in the portion that becomes the weir part in the cushion body, forming the weir part and the orifice part,
The fused body has a peripheral edge portion and an opening, and injects and fills the liquid from the opening to the liquid containing space in the cushion body having the liquid containing space, the weir portion, and the orifice portion,
Finally, the opening is fused to seal the liquid container into which the liquid is injected.
A method of manufacturing a cushion for bedding characterized by the above.

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