JP2002306285A - Cushion body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foldable cushion material improving the both of air permeability and cushion performance. SOLUTION: A surface-side elastic foam body formed by aligning plate bodies apart with clearances therebetween into a draining board and a back-side elastic foam body formed by aligning the plate bodies in the same way are integrally constituted by crossed to each other. Either one of or the both outer surfaces of the surface-side elastic foam body and the back-side elastic foam body are formed into recessed/projecting shapes. The innermost parts of the respective clearance parts of the surface-side elastic foam body and the back-side elastic foam body are set to conduit parts having the diameter larger than the width of the clearance parts and the conduit parts of the surface-side elastic foam body and the back-side elastic foam body are made to cross to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cushioning material for supporting a person, such as beddings such as mattresses, mattresses, pillows and cushions, upholstery and vehicle seats.

[0002]

2. Description of the Related Art Conventionally, urethane foam is widely used as a cushioning material because of its elasticity and excellent compression recovery. However, when the load supporting surface is a flat plate, it is laid on it. When, for example, the part where the weight is added sinks deeper than other parts,
By changing the surrounding part where the weight is not applied to the part that sinks deeply, the mattress generates compression deformation different from the body weight distribution and the body pressure distribution is not good, making it difficult to sleep is what happened.

Further, when the load-bearing surface is a flat plate, when lying on it, it comes into surface contact with the body, during which time it is inferior in air permeability, impairs sweat absorption, and causes pressure sores. Also happened.

[0004] In addition, the air flow inside the urethane foam is impaired, and there is a disadvantage that stuffiness is easily generated. Therefore, by providing wavy or protruding irregularities on the surface to which the load is applied, the body is supported in a point-like manner, and a gap is created between the protruding irregularities to create air flow (J.
No. 7-26088), by providing a cut in the surface to prevent a portion adjacent to the above-mentioned portion from sinking due to the sinking due to compression of the portion receiving the load (Japanese Patent Laid-Open No. 9-121985). And so on.

[0005] However, in the case of the projection-shaped unevenness, if the load is excessively concentrated, the projected portion is compressed and the gap between the unevenness disappears, so that the air permeability cannot be expected. However, the effect of improving the air permeability cannot be expected particularly, although it is possible to prevent the loaded part from being drawn into the load part on the surface of the adjacent part.

Of course, when the cushion body is folded after use and stored in a closet or the like, if it is folded in two or three, both the kerfs and irregularities on the surface are particularly effective for the bending operation. I hated bending instead.

[0007]

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a cushion material which is improved in both air permeability and cushioning property and which can be folded.

[0008]

Means for Solving the Problems A front-side elastic foam formed by arranging the plate-like bodies in parallel with a gap and a back-side elastic foam formed by arranging the plate-like bodies in the same manner as described above intersect. In this state, they were integrally configured. The outer surface of one or both of the front-side elastic foam and the back-side elastic foam was made uneven. The innermost part of the gap between the front-side elastic foam and the back-side elastic foam is a conduit part having a diameter larger than the width of the gap, and the conduit of the front-side elastic foam and the back-side elastic foam is formed. Parts crossed.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In the cushion body 1 of the present invention, the front-side elastic foam 2 and the back-side elastic foam 3 are integrated, and the two elastic foams 2 and 3 are formed in an uneven shape 5 having a projection 4 on the outer surface side, or are not provided. It has a planar shape 6. The two elastic foams 2 and 3 respectively have plate-like bodies 7 and 8 (in the illustrated example, each having a rectangular shape in a plan view) arranged in parallel, and the two plate-like bodies 7 and 8 are vertically arranged. They intersect at right angles in an overlapping state and become one.

The elastic foams 2 and 3 may be formed by cutting one block of elastic foam, or by cutting a block formed by laminating and integrating a plurality of layers having different hardness. good.

The plate-like body 7 constituting the front-side elastic foam 2 in the illustrated example has three rows of projections 4 on its outer surface.
To form a gap 9. The innermost part of the gap 9 is a conduit part 10 having a diameter larger than the width of the gap 9. In addition, the plate-like body 8 has a gap 1 between adjacent plate-like bodies 8.
1 are formed. The innermost part of the gap 11 is a conduit part 12 having a diameter larger than the width of the gap 11. The plate-like bodies 7, 8 are provided to intersect as described above. Therefore, the conduit portions 10 and 12 of the plate members 7 and 8 intersect in plan view, but the conduit portions 10 and 12 are placed on the surface where the plate members 7 and 8 are in contact with each other so that there is conduction at the intersection 13. To be located at Thereby, gap 9 intersection 13 gap 1
Following 1, an air passage 14 is formed through the front side elastic foam 2 and the back side elastic foam 3.

When a load is applied to the front side of the cushion body of the present invention, if the urethane is made of the same material, the surface of the cushion body is first deformed, and the applied load is offset by the elasticity of the urethane itself at the time of deformation. I do. As the load is applied to the inner layer of urethane, the above-described offset proceeds, the load gradually decreases, and the deformation stops when the load becomes zero. However, if the urethane material is changed in a layered manner so that the surface side is hard and the inner layer side is soft, the deformation of the inner layer portion starts largely. Therefore, depending on the intended use of the cushion body, it is determined whether the cushion body has a single composition or is appropriately formed into a multilayer to have a change in the pressure resistance of each layer.

FIG. 3 shows the present inventions 1 and 2 in which the projections shown in FIG. 1 are formed on the surface of a cushion body 1 having a height of 80 mm (the present invention 1 has a urethane density of 0.035 g / cm ² and the present invention 2
Shows compression curves of a urethane density of 0.040 g / cm ² , a comparative example (provided with a protrusion of Japanese Utility Model Publication No. 47-26088 on the surface), and a flat (the surface is flattened).
The compression curve is measured by a method based on JIS K6400.

According to this compression curve, the cushion body of the present invention always has a larger sinking amount for the same compression force as compared with a cushion body having a flat plane, and a flat body has a compression force of about 75 g / cm ^2. It shows a line that extends linearly with a slope, and the amount of sinking is small, whereas the one made of uniform urethane with protrusions on the surface has the same compressive force of 80 g / cm with a gentler slope than the one with a flat surface. ^On the other hand, in the present invention, the compression force is 40 to 55 g / cm2 while the two have an initial inclination intermediate between the former two, that is, while exhibiting an intermediate sinking amount at the same compression force. The amount of sinking per g increases from the point exceeding cm ^2, and conversely, the amount of sinking per g decreases in the latter half, and the slope of the curve rises.
In other words, in a specific range of the load that needs to be supported, the sinking amount is increased to support the software softly, and above and below the range, the sinking amount is reduced and applied hard. That is, it is possible to adjust the sinking amount with respect to the pressure by adjusting the shape of the unevenness, the thickness of the plate-shaped body, the interval, and the like.

In the cushion body of the present invention, the front-side elastic foams formed by arranging the plate-like bodies in a space-like manner with a gap therebetween, and the back-side elastic foams similarly arranged in a parallel manner are integrally formed in an intersecting state. For this reason, in the example shown in the drawing, the range of nine protrusions 4 where the front plate 7 and the rear plate 8 overlap each other constitutes one block. Each block is divided into squares at the thick middle portion of the cushion body 1 by the deepest conduit portion 10 and the deepest conduit portion 12 of the gap 9 between the front-side plate-like body 7 and the deepest conduit portion 12 between the back-side plate-like body 8. Therefore, the load is independently received and supported. Therefore, each block bears the load individually, and when one block sinks on the surface, a part of the adjacent block is pulled by the sinking block and no sinking occurs. .

When the cushion body of the present invention is folded at the time of storage or the like, if it is folded at the gap between the plate-like bodies, it can be easily folded at the conduit portion at the innermost part of the gap.

Further, since the conduit part intersects the course in the middle part of the cushion body, and its end is opened to the side surface of the cushion body, it is excellent in air permeability and helps to prevent unevenness.

[0018]

The cushion body of the present invention intersects a front-side elastic foam formed by arranging plate-shaped bodies in a gap-like manner with a gap therebetween and a back-side foam formed by arranging plate-shaped bodies in the same manner as described above. In this state, one block in which the front-side elastic foam and the rear-side elastic foam are integrated is formed at the intersection, and compression is applied to the cushion body. When the blocks are applied, the blocks receive loads independently of each other, so that blocks that do not receive loads adjacent to each other or receive less load are not pulled in, and stable support can be realized.

Since the conduit is provided at the innermost part of the gap between the adjacent plate-like bodies to constitute the above-mentioned block, it becomes a flow passage for discharging moisture and the like trapped inside the cushion body, and enhances air permeability, and When the cushion body is folded, it can be easily folded at this portion.

[Brief description of the drawings]

FIG. 1 shows a cushion body of the present invention, in which A is a plan view, B is a front view, and C is a side view.

FIG. 2 is a bottom view of the cushion body of the present invention.

FIG. 3 shows another compression curve of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cushion body 2 Front side elastic foam 3 Back side elastic foam 4 Projection 5 Uneven shape 6 Planar shape 7,8 Plate 9,11 Gap 10,12 Conduit part

Continued on the front page (72) Inventor Yoji Shimura 8-8 Nihonbashi Tomizawacho, Chuo-ku, Tokyo Inside Nishikawa Sangyo Co., Ltd. (72) Inventor Hiroshi Shimakura 3-4-4 Nihonbashi Muromachi, Chuo-ku, Tokyo Bridgestone Chemical Products Tokyo Co., Ltd. F-term (reference) 3B096 AB01 3B102 AB07 AC02

Claims (3)

[Claims] 1. A front side elastic foam formed by arranging plate-like bodies in a zigzag manner with a gap therebetween and a back side elastic foam formed by arranging plate-like bodies in the same manner as described above in an intersecting manner. A cushion body characterized by comprising: 2. The cushion body according to claim 1, wherein one or both of the front side elastic foam and the back side elastic foam have an irregular shape. 3. The innermost part of the gap between the front-side elastic foam and the back-side elastic foam is a conduit part having a diameter larger than the width of the gap, and the front-side elastic foam and the back-side elastic foam are formed. The cushion body according to claim 1, wherein the body conduits are crossed.