JP7442231B1 - Cushioning material, and mattresses, cushions, and pillows containing the cushioning material - Google Patents

Abstract

[Problem] To provide a cushioning material that can comfortably support the body. SOLUTION: The cushioning material is formed of an elastic material and is deformed to become concave when pressed, and has a first support member and a second support member formed of the same material, and has a first support member and a second support member formed of the same material. The support member is independent from the first support member at least on the pressing surface, the first support member has a first peripheral wall surface surrounding the second support member, and the first support member has a first peripheral wall surface surrounding the second support member, and A cushioning material, wherein an outer circumferential surface of the supporting member and a first circumferential wall surface of the first supporting member surrounding the second supporting member have the same height. [Selection diagram] Figure 1

Description

The present invention relates to a cushioning material, and a mattress, cushion, and pillow having the cushioning material.

Currently, cushioning materials that support the body comfortably are being developed.

For example, Patent Document 1 describes a cushioning material that aims at dispersing body pressure by providing a convex portion on the surface cushioning layer (see FIG. 1, etc.).

JP2019-63316A

However, in the cushioning material as described above, if the convex portion falls down due to body pressure, there is a possibility that the supporting effect will not be sufficiently exhibited. On the other hand, if the convex portion is too hard, it may not be comfortable to use.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cushion material that can support the body comfortably and its related materials.

The present application includes a plurality of means for solving at least part of the above problems, examples of which are as follows. A cushioning material according to one aspect of the present invention that solves the above problems is a cushioning material that is formed including an elastic material and deforms into a depression when pressed, and has a first support member and a second support member formed of the same material. two support members, the second support member is independent from the first support member at least on the pressing surface, and the first support member is independent of the second support member. The outer peripheral surface of the second support member and the first peripheral wall surface of the first support member surrounding the second support member have the same height.

The first peripheral wall surface may reach an upper surface and a lower surface of the first supporting member, and the outer peripheral surface of the second supporting member may have the same shape as the first peripheral wall surface.

The second support member may have an auxiliary hole in the center thereof that penetrates in the vertical direction.

The first peripheral wall surface reaches the upper surface of the first support member, and the outer periphery of the second support member is an annular first bottom wall surface perpendicular to the first peripheral wall surface of the first support member. It may have the same shape as the inner periphery.

The root of the second support member may be integral with the root of the first support member.

The second support member is provided with a second groove extending in the vertical direction and having a semicircular shape recessed inward in a top view, on the outer circumferential surface, and the first support member A first groove extending in the vertical direction and having a semicircular shape recessed outward in a top view may be provided on one circumferential wall surface at a position facing the second groove.

A mattress according to one aspect of the present invention that solves the above problems has the above cushioning material.

A cushion or pillow according to one aspect of the present invention that solves the above problems includes the cushion material described above.

According to the present invention, it is possible to provide a cushion material and its related materials that can support the body comfortably.

Note that problems, configurations, effects, etc. other than those described above will be made clear by the description of the embodiments below.

It is a perspective view showing an example of the cushioning material concerning a first embodiment. FIG. 2 is a perspective view (a) and a cross-sectional view (b) of the cushioning material in FIG. 1. FIG. It is an explanatory view of an example of an existing cushion material. FIG. 2 is an explanatory diagram when the cushion material of FIG. 1 is pressed by a pressing body. A photograph is shown when the cushioning material of FIG. 1 is actually pressed. It is a figure which shows the example of the cushioning material of the modification 1 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 1 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 2 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 3 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 4 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 5 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 6 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 7 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 8 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 9 of 1st embodiment. It is a figure which shows the example of the cushioning material of the modification 10 of 1st embodiment. It is a figure showing an example of the mattress concerning a second embodiment. It is a sectional view of the mattress concerning a third embodiment. It is a figure which shows the example of the mattress of the modification 1 of 3rd embodiment. It is a figure which shows the example of the mattress of the modification 2 of 3rd embodiment. It is a figure which shows the example of the elastic body of the modification 3 of 3rd embodiment. It is a figure which shows the example of the elastic body of the modification 4 of 3rd embodiment. It is a figure which shows the example of the elastic body of the modification 5 of 3rd embodiment. It is a figure which shows the example of the elastic body of the modification 5 of 3rd embodiment. It is a figure which shows the example of the elastic body of the modification 5 of 3rd embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, each embodiment which is an example of this invention is described using drawings.

<First embodiment>
FIG. 1 is a perspective view showing an example of the cushioning material 100 according to the first embodiment, FIG. 2(a) is a perspective view of the cushioning material 100, and FIG. 2(b) is a sectional view of the cushioning material 100. . In each figure, X indicates the width direction (horizontal direction), Y indicates the thickness direction (vertical direction, height direction), and Z indicates the depth direction.

The cushion material 100 is formed of an elastic material and deforms when pressed. The cushion material 100 includes a first support member and a plurality of second support members made of the same material. As shown in the figure, the cushioning material 100 has a base 101 as a first support member and a support column 102 as a second support member. The support column 102 as the second support member is independent from the base 101 as the first support member, at least on the pressing surface. Note that the "pressing surface" is a surface that is pressed against an object (pressing body) that dents the cushion material 100.

The base 101 has a generally flat upper surface and a lower surface, and has a predetermined thickness. As an example, the base 101 has the same number of first peripheral wall surfaces 103 as the support columns 102 and is provided at predetermined intervals. The first peripheral wall surface 103 is a part of the base 101 and is an endless continuous wall surface when viewed from above. The support column 102 is surrounded by a corresponding first peripheral wall surface 103, and the heights of the outer peripheral surface of the support column 102 and the first peripheral wall surface 103 surrounding the support column 102 are approximately the same.

As shown in the figure, the support column 102 has a flat top surface and a flat bottom surface (lower surface), and does not protrude from the base 101. In other words, the upper surface of the support column 102 is generally on the same plane (XZ plane) as the upper surface of the base 101, and both constitute a substantially flat pressing surface. In the illustrated example, the support column 102 has a cylindrical shape, and its outer circumferential surface has the same shape as the first circumferential wall surface 103 . That is, the support column 102 fits into the cylindrical space of the same size and the same shape included in the first peripheral wall surface 103 with the gap F being substantially zero. Preferably, the first peripheral wall surface 103 reaches the upper and lower surfaces of the base 101.

Preferably, the support column 102 may have an auxiliary hole 104 extending from the center of the circle on the top surface to the center of the circle on the bottom surface. In other words, preferably, in the illustrated example, the support column 102 further has an auxiliary hole 104 in the center thereof, which penetrates in the vertical direction (axial direction) and is concentric with the outer circumferential surface.

The base portion 101 and the strut portion 102 are made of an elastic body. The elastic body is, for example, a foam material with a single cell or semi-open cell structure such as polyethylene foam or a rubber sponge, or a foam material with an open cell structure such as urethane foam. Of course, other highly breathable materials can also be used, such as foam materials such as fibers such as coconut shell or microfibers made of polyethylene.

Preferably, the base portion 101 and the support portion 102 are formed from the same rectangular parallelepiped-shaped original material. For example, it can be easily manufactured by first cutting out the support portion 102 from a prototype material by punching using Thomson processing, and then using the remaining portion as the base portion 101. That is, the strut portion 102 is a portion cut from the material including the base portion 101 by a notch. That is, the first peripheral wall surface 103 is a cut surface where the support section 102 is cut out from the original material, and the space included in the first peripheral wall surface 103 is a cut hole (cavity) from which the support section 102 is cut out. Thereby, it is possible to easily form the support column 102 and the first peripheral wall surface 103 having the same size and shape as the outer peripheral surface thereof.

The size of the support column 102 can be set depending on the purpose and thickness of the cushioning material 100. The strut portion 102 has a diameter of, for example, 1.5 cm to 12 cm, preferably 2 cm to 8 cm, and more preferably 3 cm to 6 cm.

Here, in order to explain the function of the cushioning material 100, the action of an existing cushioning material when pressed will be described. FIG. 3A is an explanatory diagram when the integrally formed cushion material A is pressed by a pressing body P (for example, a human body). As shown in the figure, when the integrally formed cushioning material A is pressed, the upper surface (pressing surface) of the cushioning material A is pulled toward the center of the pressing body. Then, since the pressing body P rebounds against this, stress is generated in the outward direction. For example, when a user uses the cushion material A while sitting, such stress causes a feeling of pulling on the buttocks (pressing body P) and becomes a factor that prevents comfortable use.

FIG. 3(b) shows a cushion material B in which a convex portion BP is provided on the pressing surface in order to reduce such stress. As shown in the figure, when the cushion material B is pressed, the convex portion of the pressing surface moves so as to fall down toward the outside. At this time, an outward pulling force also acts on the pressing body. As a result, the user is forced to use the device while continuing to feel a pulling sensation in the buttocks.

FIG. 3(c) is an explanatory diagram when the cushion material C using beads is pressed. The cushion material C is a so-called bead cushion in which beads CB are stuffed into a bag-like cover. When such a cushioning material C is pressed by a pressing body P, the beads move outward in the bag and the whole bag spreads laterally, and the pressing body P sinks deeply into the cushioning material C and is fixed. In addition, when the pressing body P moves, the beads CB move freely and absorb the force.For example, when used as a mattress, it is difficult to turn over or move, and there is little resistance and it takes a considerable amount of force to change the position. It becomes necessary.

FIG. 3(d) is an explanatory diagram when the low-resilience cushion material D is pressed. Cushion material D is a so-called low-repulsion cushion made of a material with low repulsion force. When such a cushioning material D is pressed by the pressing body P, the pressing body P sinks deeply into the cushioning material D. At this time, the pressing surface of the cushioning material D is pulled toward the center of the pressing body P, and the pressing body P rebounds against this, thereby generating stress in the outward direction. Such stress causes the user to feel a pulling sensation and prevents comfortable use. Also, because the repulsive force is low, force is required to stand up or change one's position.

Next, a case will be described in which the cushion material 100 of this embodiment is pressed in the same manner as described above. FIG. 4 is an explanatory diagram when the cushion material 100 according to the first embodiment is pressed by the pressing body P. Fig. 5 shows a photograph of a cushion material in which a 22 x 22 x 6 cm urethane foam material (original material) is used to press a cushion material with a support portion with a diameter of 40 mm and a first peripheral wall surface using a pressing body P. .

As shown in FIGS. 4 and 5, when pressure is applied to the pressing surface M of the cushion material 100 by the pressing body P, the base 101 and each support column 102 deform independently, and the gap F between them changes. , disperses pressure and supports the pressing body P. At this time, since both are made of the same material and have similar hardness and elasticity, the user does not feel any discomfort (such as a feeling of unevenness).

That is, at the center, the support column 102 receives a load independently from the base 101 and is compressed mainly downward. The compressed support column 102 supports the base 101, which receives a load and is pulled toward the center, from collapsing, and suppresses the entire body from sinking toward the center. At this time, since the base portion 101 and the strut portion 102 are made of the same material, and the heights of the strut portion 102 and the first peripheral wall surface 103 are approximately the same, the edge portion does not give a sense of discomfort to the user.

On the other hand, in the outer portion, the support column 102 that is being pushed out and tends to fall outward is supported by the surrounding base 101 that is pulled toward the center, thereby canceling out the force. At this time, since the base portion 101 and the strut portion 102 are made of the same material, and the heights of the strut portion 102 and the first peripheral wall surface 103 are approximately the same, the edge portion does not give a sense of discomfort to the user.

Thereby, it is possible to prevent the support portion 102 from collapsing and the base portion 101 from being pulled in, without giving the user a sense of discomfort.

Furthermore, in the cushioning material 100, since the auxiliary holes 104 are formed in the support pillars 102, force is dispersed within the support pillars 102, and breakage and cracks can be prevented. In other words, since the support section 102 has the auxiliary hole section 104, a portion of the support section 102 that is relatively separated across the auxiliary hole section 104 and is less susceptible to influence is created, thereby enhancing the above-mentioned effects. From this point of view, the auxiliary hole 104 is preferably formed to have a diameter that is 1/15 or more of the diameter of the support column 102. Further, from the viewpoint of not significantly affecting the hardness etc. of the strut portion 102, the auxiliary hole portion 104 is preferably formed to have a diameter of 1/5 or less of the diameter of the strut portion 102.

Furthermore, even if the cushioning material is made of a material with an open cell structure, it takes time for the internal air to escape to the outside when pressure is applied, and it takes time for the cushioning material to be compressed. Conversely, even if the pressure is removed, it takes time for it to return to its original state. The time required for this compression and restoration is proportional to the wall thickness in the direction in which air escapes. In the cushion material 100, the base portion 101 and the support portion 102 are independent from each other, and the support portion 102 has the auxiliary hole portion 104, so that the wall thickness in the direction in which air escapes is reduced. Therefore, air escapes quickly, the shape of the cushion material changes quickly in response to pressure, and it becomes easier to turn over, for example, in response to the movement of the user who is the pressing body.

The first embodiment of the present invention has been described above. According to this embodiment, in the cushion material 100, the base portion 101 and the support portion 102 receive loads independently, thereby supporting each other and preventing integral deformation, thereby reducing the burden on the body during use. Further, it is possible to provide comfortable sitting and sleeping comfort without feeling of tension on the skin. Further, by providing the auxiliary hole portion 104, it becomes easier to turn over, for example.

It is also possible to form the base portion 101 and the support portion 102 from different materials, but in this case, the hardness and elasticity are different, so although it is good in terms of providing stimulation, some users may feel uncomfortable (unevenness) when used for a long time. ), causing discomfort. In this embodiment, the base portion 101 and the support portion 102 are made of the same material, so that the above effects can be achieved within a range that does not cause discomfort to the user, and this is particularly suitable when long-term use is expected. .

In addition, since the base 101 and the strut 102 are made of the same material, they are compatible with each other, and if the first peripheral wall surface 103 of the base 101 and the strut 102 are formed to have the same shape, the strut can be supported without using adhesive. The part 102 will not fall easily.

Further, since the entire cushion material 100 can be formed uniformly in terms of material, measures against temperature and humidity can be easily taken. Furthermore, since no foreign materials or adhesives are used, there is little deterioration over time.

The cushioning material 100 may include a cover 105 that covers the base 101 and the support column 102. The cover 105 is preferably made of, for example, cloth, leather, synthetic leather, or the like. Even when the cover 105 is provided, the above effects are considered to be achieved, unless the cover 105 is particularly thick or elastic. Although the surface of the cushioning material 100 is illustrated as a flat surface, it may have a pattern or unevenness, such as a wavy surface, for example.

Note that various further modifications are possible. For example, the first peripheral wall surface 103 and the support column 102 may have shapes other than the illustrated example. From the viewpoint of resistance to damage, it is preferable that these have a rounded shape, for example, in addition to the above-mentioned regular cylindrical shape, an elliptical cylindrical shape or a polygonal cylindrical shape with rounded corners. Furthermore, although the cushioning material 100 has a substantially rectangular parallelepiped shape in the illustrated example, it may have another shape. In the example illustrated above, the support columns 102 are arranged parallel to the sides of the rectangular parallelepiped, but they may be arranged as appropriate depending on the overall shape.

Furthermore, the diameters of the support columns 102 may be different. In this case, the inner circumferential diameters of the first circumferential wall surfaces 103 of the base portion 101 are also formed to differ accordingly. For example, the diameter may be changed for each row or every predetermined row. Furthermore, the number of support columns 102 and the number of first peripheral wall surfaces 103 of the base 101 may be different. For example, the support columns 102 may be thinned out as appropriate on the first peripheral wall surface 103, and may be fitted into every other row, for example. Further, the first peripheral wall surface 103 into which the support column 102 is not fitted may be formed to have a smaller diameter than that into which the support column 102 is fitted.

<Modification 1 of the first embodiment>
FIG. 6 is a top view of a cushioning material 100A having support columns 102 expanded in six directions. The cushion material 100A is, for example, a circular cushion when viewed from above, and the support portions 102 are lined up toward the six corners of a regular hexagon drawn inside the circle. Moreover, one each is provided between the outermost pillar parts 102, and a total of 19 pillar parts 102 are lined up at equal intervals. That is, it can be said that the base 101 is disposed around the plurality of support sections 102 and connected around the plurality of support sections 102 to form a frame.

According to such a configuration, each support pillar 102 is surrounded by other support pillars 102 at equal intervals, and the wall surfaces of the support pillars 102 efficiently support each other, thereby suppressing deformation. Particularly, since the inner pillar part 102 is supported in six directions around the periphery by other pillar parts 102, the cushioning performance is higher. This action suppresses the overall deformation and distortion, reducing the burden on the body even when used for a long time.

Although not shown here, structures such as rubber, plastic materials, cloth, nets, filaments (long fibers), and staples (short fibers) (structures in which aggregated fibers are welded to each other) may be placed around the cushion material 100A. It can be made more durable by providing a ring-shaped frame or reinforcing part made of metal, metal, etc., or a combination of these.

7(a) and 7(b) are cross-sectional views of an example in which a pin as an auxiliary member is provided on the support portion 102 of the cushion material 100A. In order to respond to cases where the user desires strong stimulation or a feeling of unevenness, an upper surface pin 106A is provided at the upper opening (pressing surface side) of the auxiliary hole 104 of the support 102, as shown in the figure. The lower surface pin 106B may be fitted into the lower opening of. The top pin 106A has a head 108A with a gently raised circular surface and a foot 109 that is a protrusion provided on the back of the head, and the foot 109 is fitted into the auxiliary hole 104. Thus, it is fixed to the upper surface of the support column 102. That is, the upper surface pin 106A has a slightly smaller area than the surface of the support column 102 on the pressure surface side, and is raised above the surface of the support column 102 on the pressure surface side. Further, the upper surface pin 106A is raised from the surface of the base portion 101 on the pressing surface side. The lower surface pin 106B shown in FIG. 7(a) has a flat circular head portion 108B and a foot portion 109 so as to be stable when placed on the floor, for example, and the foot portion 109 is supported from the lower surface side. By fitting into the lower opening of the hole 104, it is fixed to the lower surface of the support column 102.

As shown in FIG. 7(b), it is also possible to use a lower pin 107 in which a plurality of heads are integrally formed and a plate-shaped head 108C has a plurality of legs 109. By using such a lower surface pin 107, the stability on the floor can be further improved, and the original shape can be maintained by suppressing the whole from expanding in the lateral direction. The upper surface pin 106A and the lower surface pin 106B can be formed of a material harder than the support portion 102 and the base portion 101. The material of such a pin may be an elastic body, a plastic material, a filament (long fiber) or a staple (short fiber) structure (including the above-mentioned welded structure), metal, etc. It may be a member that is difficult to deform. For example, only the upper surface pin located on the pressing surface side that comes into contact with the body may be made of an elastic body, and the lower surface pin may be made of a material with high hardness. Alternatively, only the head part may be made of an elastic material, and the legs may be made of a material with high hardness.

<Modification 2 of the first embodiment>
The cushion material 100 may be used in combination with other cushion materials. 8(a) and 8(b) are cross-sectional views of cushioning materials 100B and 100C in which the cushioning material 100 is combined with a plate-shaped cushioning material 110. The cushioning material 100B shown in FIG. 8(a) is an example of a two-layer structure in which the cushioning material 100 is laminated on the upper surface of the plate-shaped cushioning material 110, and the cushioning material 100C shown in FIG. 100 are laminated with a plate-shaped cushioning material 110 sandwiched therebetween to form a three-layer structure.

The cushioning material 110 can maintain air permeability by forming a structure of filaments (long fibers) or staples (short fibers) (including the above-described welded structure). Further, in order to improve ventilation, vertical holes or horizontal holes may be provided in the illustrated structure.

Further, the cushioning material 110 may be shaped like a bag filled with air or water to provide more cushioning properties. Furthermore, by combining this with the cushioning material 100 to form a laminated layer of a plurality of layers, the cushioning properties may be enhanced, or the layer may be moved laterally in units of layers to facilitate adjustment. Note that the laminated cushions may be prevented from shifting by, for example, a cover that matches the shape, or may be fixed by pasting or a separately provided fixing member. According to such cushioning material 100B and cushioning material 100C, cushioning materials with various usability can be manufactured by combining them. This makes it possible to provide products that are more suited to the user's physical condition and preferences.

<Variation 3 of the first embodiment>
FIGS. 9A and 9B show another example in which a first peripheral wall surface 1131 is provided. The first peripheral wall surface 1131 reaches the upper surface of the cushion material 100D and makes the support column 112 independent from the base 111 on the pressing surface, but does not reach the lower surface.

As shown in FIG. 9(a), the cushion material 100D is provided with a cutting groove 113, which is a cylindrical cut. In other words, the cushioning material 100D includes a first peripheral wall surface 1131, an annular first bottom wall surface 1132 perpendicular to the first peripheral wall surface 1131, and a support column having an outer periphery having the same shape as the inner periphery of the first bottom wall surface 1132. It has a cutting groove 113 that defines an outer circumferential surface of 112. For example, the cutting groove 113 has a height from the pressing surface to the middle of the base 111. Here, the strut portion 112 is a portion continuous with the base portion 111 (the portion surrounded by a broken line in FIG. 9(b)). That is, the base of the support column 112 is integrated with the base of the base 111. Note that such cuts may be formed in advance when molding the elastic body, or may be formed by cutting the molded elastic body (prototype material) later.

According to such a configuration, since the outer circumferential surface of the strut portion 112 is separated from the base portion 111, the strut portion 112 and the base portion 111 can deform independently and support each other. From this point of view, the height of the first peripheral wall surface 1131 is preferably 1/3 or more, more preferably 1/2 or more of the entire cushioning material.

In this example, while the first peripheral wall surface 103 of the first embodiment reaches the bottom surface, the first peripheral wall surface 1131 does not reach the bottom surface, and the independence of the support section 112 and the base section 111 is reduced. Since it is relatively low, a first bottom wall surface 1132 is further provided to adjust it. From this point of view, the width of the first bottom wall surface 1132 is preferably 1/10 or less and 1/25 or more of the diameter of the support column 112.

The cutting grooves 113 may be provided on both the upper and lower sides, as shown in FIG. 9(c). As a result, no matter which side the user uses as the pressing surface, the same effect can be achieved. Here, the auxiliary hole 104 may penetrate only the support column 112, or may penetrate the entire cushion material as shown in the figure.

<Modification 4 of the first embodiment>
Even in a cushion material provided with such cutting grooves, an auxiliary member can be provided so as to respond to cases where the user desires strong stimulation or a feeling of unevenness. FIG. 10(a) is an example in which the top pin 106A is fitted into the auxiliary hole 104 of the cushion material 100E. Alternatively, as shown in FIG. 10(b), a cap-shaped top pin 115 may be used. The upper surface pin 115 has a cap shape having a leg portion 114 that can be fitted into the cylindrical cutting groove 113, and can be more stably mounted. Furthermore, as in the cushion material 100F shown in FIG. 10(c), a protrusion 116 raised around the auxiliary hole 104 may be formed in place of the pin. Further, as in a cushion material 100G shown in FIG. 10(d), a convex portion 116 may be provided and then an upper surface pin 106A may be fitted into the auxiliary hole portion 104. In this example, a cutting groove 113 is formed whose width increases toward the upper surface side, so that the buffering effect becomes stronger on the pressing surface side. In addition to the cushioning material, the top pin 106A may be made of rubber, plastic material, filament (long fiber) or staple (short fiber) structures (including the above-mentioned welded structure), cloth, metal, etc. .

<Variation 5 of the first embodiment>
As shown in FIG. 11, a configuration may be adopted in which the support pillars can be replaced. FIG. 11(a) shows an example in which the support portion 102 of the cushion material 100 is configured to be replaceable. As shown in the figure, the strut section 102 inserted into the first peripheral wall surface 103 of the cushioning material 100 is configured to be removable, and the strut section 102 can be pulled out from the base section 101 and replaced with another strut section. be able to. By making the support column 102 replaceable in this manner, it is possible to select the elasticity and shape to configure the cushioning material with a desired feeling of use, and to replace deteriorated parts with new ones.

Note that a variety of support portions may be provided so that various choices can be made. As an example, FIG. 11(b) shows support columns 120A, 120B, and 120C formed by laminating a plurality of layers. The first layer of each of the struts 120A to 120C has a convex top and is located above the strut. Such a convex top can press the body in a pinpoint manner and provide a massage effect. A second layer is formed below the first layer in each support column. Since the second layer plays a role of receiving pressure from the first layer, the strength of repulsion, hardness, etc. can be adjusted by selecting the material of the second layer. A third layer is further formed in the support columns 120B and 120C as a lower layer of the second layer. The third layer has the role of an axis that penetrates the center of the second layer and reaches the first layer, and the role of supporting the whole at the bottom. By using a material with high hardness for such a third layer, strength and stability can be improved. Further, as shown in FIG. 11(c), a cushion material 100H may be provided in which a support column 118 having a height up to the middle of the base 119 is independently provided and is replaceable.

<Variation 6 of the first embodiment>
The support column does not necessarily have to be cylindrical. The support column may have a shape in which there is a portion inside the pressing surface that is larger than the portion exposed to the pressing surface. FIG. 12(a) is a cross-sectional view of a cushioning material 100I including a columnar support portion 122 having a spherical center. In order to accommodate such a support portion 122, the first peripheral wall surface 123 formed on the base portion 121 also has a similar shape. According to such a configuration, the spherical portion is caught on the wall surface of the first circumferential wall surface 123 and the vertical movement of the support portion 122 is suppressed, thereby preventing the support portion from shifting within the hole and causing large irregularities on the surface. It can be prevented. Note that the upper part of the support column 122 on the pressing surface side is gently raised, and by using a harder material, it is also possible to have a massage effect.

Furthermore, FIG. 12(b) is a cross-sectional view of the cushion material 100J including the spherical support portion 122B. The first circumferential wall surface 126 of the base portion 121B has a spherical shape with a portion opened to match the shape of the support column, and since the spherical diameter of the support column 122B is larger than the opening of the first circumferential wall surface 126, The support column 122B is prevented from protruding from the first peripheral wall surface 126. Further, such a support column 122B can be rotated within the first peripheral wall surface 126, and even if it is deformed in one direction due to long-term use, it can be rotated to change the direction in which elasticity remains. You can continue using it. Further, since a portion of the spherical surface protrudes from the opening of the first peripheral wall surface 126, it is possible to provide appropriate stimulation to the user.

<Modification 7 of the first embodiment>
You may use several support|pillar parts in combination. For example, FIG. 13(a) is a cross-sectional view of a cushion material 100K in which a plurality of spherical support columns 122C are stuffed into the base 101. Note that the diameter of the first peripheral wall surface 103 is formed so that the support column 124 closely contacts and sandwiches both sides of the spherical surface to such an extent that it does not protrude. FIG. 13(b) is a cross-sectional view of a cushion material 100L in which protective members 125 are provided on the upper and lower surfaces and the first peripheral wall surface 103 is covered. Note that the protective member 125 may be made of any material, such as an elastic body or a sheet. Further, the protection member 125 may be provided with an outlet for replacing the support portion, or the protection member 125 itself may be provided in a removable manner.

<Modification 8 of the first embodiment>
FIG. 14(a) shows an example of the first peripheral wall surface 103 according to another example.

The support column 127 of this example is provided with a second groove extending in the vertical direction and having a semicircular shape recessed inward in top view (in the direction of the center line extending in the vertical direction) on the outer circumferential surface, and the base portion is , a first groove extending in the vertical direction and having a semicircular shape recessed outward in top view (opposite to the above-mentioned inner side) is provided in the first circumferential wall surface 103 at a position facing the second groove. ing.

The first groove portion and the second groove portion are combined to form an adjustment hole portion 128 that extends in the vertical direction. Note that although the configuration is such that four locations are provided at equal positions on the outer circumferential surface of the support column 127, any number and arrangement may be provided. By providing such an adjustment hole 128, the friction between the first peripheral wall surface 103 and the support column 127 can be reduced, and wear and tear of the elastic body can be prevented. This is particularly effective when using a foam material with a single cell structure.

The diameter of the circle of the adjustment hole 128 is, for example, 5 mm to 40 mm, preferably 10 mm to 30 mm. Further, the height (thickness) of the cushioning material is preferably 30 mm to 250 mm, preferably 25 mm to 180 mm.

As shown in FIG. 14(b), the diameter of the support column 102 may be smaller than the diameter of the first peripheral wall surface 103. In other words, the gap CL between the first peripheral wall surface 103 and the support portion 102 may be larger than zero. By providing such a gap CL, the friction between the first peripheral wall surface 103 and the support portion 102 can be reduced. Note that the size of the void CL is 0.5 mm to 5 mm, preferably 0.5 mm to 3 mm.

Note that the first peripheral wall surface and the support portion may have other shapes (for example, a polygonal column such as a hexagonal column, or an elliptical column). FIG. 14(c) shows an example in which a first peripheral wall surface 103 (with an internal space) having a hexagonal column shape and a support portion 129 having an elliptical column shape are provided. In this example, since a gap naturally occurs between the first peripheral wall surface 103 and the support column 129, it is possible to reduce the friction between the side surfaces thereof.

The above cushioning material is suitable for cushions, mats, pillows, etc. Examples of cushioning materials suitable for health appliances and the like will be described below.

<Modification 9 of the first embodiment>
FIG. 15(a) is an exploded view of the stretch pole 130 using the cushioning material 100M, and FIG. 15(b) is a perspective view of the stretch pole 130. Note that a stretch pole is a type of foam roller used for physical therapy, stretching, etc., and is a health equipment mainly used to apply pressure to the body.

As shown in the figure, the stretch pole 130 consists of a core material 131 and a cushion material 100M attached to the outer peripheral surface of the core material 131. ) structures (including the above-mentioned welded structures), cylindrical members made of metal, etc.

The cushion material 100M consists of two semi-cylindrical base parts 132, which are divided into two parts and attached to the circumferential surface of the core material 131. A plurality of rounded quadrangular cut portions 133 are formed on the surface of the base portion 132 . With this configuration, when the user presses the stretch pole 130 against his or her body, the user is less likely to feel a pulling sensation, and can apply pressure to the body with a comfortable feel. In this example, the cushion material 100M is divided into two parts and pasted on the circumferential surface of the core material 131, but the cushion material 100M may be formed into a cylindrical shape without being divided and the core material 131 inserted therein, or it may be divided into more finely divided parts. You can also paste it.

Note that the cushion material 100M may be formed into a band shape, rolled up, and wrapped around the outer peripheral surface of the core material 131. For example, it is also possible to form it into a thin strip and wrap it in a diagonal direction. Further, in addition to the cutting portion 133, a support portion may be provided to obtain the same effect. Furthermore, it is also possible to attach a cover.

<Modification 10 of the first embodiment>
FIG. 16 is a perspective view of the cushion material 100N. The cushion material 100N is a substantially spherical device, and is a so-called stretch ball, which is a health device used for physical therapy, stretching, and the like. The cushioning material 100N has a soccer ball-like shape in which a pentagonal plane and a hexagonal plane are combined to form a sphere. Further, cut portions and holes of various shapes are formed in the pentagonal plane and the hexagonal plane. As shown in the figure, the cut portion 134 may be provided twice in a plane, or the holes 135 may be provided at various positions within the cut portion 134. Alternatively, a surface without cut portions or holes may be made. In this way, the shapes and combinations of the holes and cut portions can be freely designed while taking usability and design into consideration. With such a configuration, the user can obtain a variety of usability by selecting the usage surface.

Note that the entire structure may be completely spherical without combining the planes. Furthermore, by providing a core material inside the ball and adjusting the presence or absence of elastic force and its strength, it is possible to provide the user with the desired hardness and elasticity. Furthermore, it is also possible to attach a cover.

<Second embodiment>
FIG. 17 is a perspective view of a mattress 100O of the second embodiment. As shown in the figure, the mattress 100O is a general bed mattress, and has a rectangular base 101, a support 102, and a frame 210 that functions as a foundation and frame that supports the base 101 and the support 102. . Although an example is shown in which the mattress 100O is formed by combining three divided members, it may be formed integrally or may be foldable.

Furthermore, such a mattress 100O can contain an aroma to give it a relaxing effect, or can have stones, ceramics, charcoal, etc. built-in to give it a far-infrared effect.

<Third embodiment>
FIG. 18 is a cross-sectional view of a mattress 200 according to the third embodiment. As shown in the figure, the mattress 200 is a bed mattress having the same shape as the above-described mattress 100O, and includes a rectangular base 201, a conductive layer 205 provided on the entire bottom surface of the base 201, and It has a support 202 fitted into the first peripheral wall surface 203 and a frame 210 that supports the base 201. Further, the base 201 is provided with a ventilation hole 204 as an air hole for ventilation. Further, although the ventilation holes are shown in the vertical direction in the figure, they may be oriented horizontally or in a combination of the horizontal and vertical directions.

The support portion 202 is a cylindrical member with a raised pressing surface, and is fitted into a first peripheral wall surface 203 provided on the base portion 201 . The support column 202 is made of an elastic material having conductivity, such as conductive rubber, conductive sponge, or conductive polyethylene resin foam. Note that a conductive top pin may be separately provided at the tip.

The conductive layer 205 is made of a conductive material such as a conductive sponge, an electric wire, a mesh wire, or an electrode foil, like the support column 202, and the two are always in contact and electrically connected. Further, the conductive layer 205 is grounded by a wiring 206. Grounding can be done, for example, by connecting a ground cord to a three-prong ground outlet provided in advance or a screw type outlet.

Here, the operation of the mattress 200 will be explained. It is now known that static electricity accumulated in living organisms has various effects on the body. Particularly in recent years, with the increase in the number of electrical appliances, electromagnetic waves to which we are exposed have increased, creating an environment in which static electricity is more likely to build up. Therefore, according to the mattress 200 of the present embodiment, when a user lies on the mattress and contacts the support pillars 202, the charged static electricity is discharged from the support pillars 202 to the ground via the conductive layer 205 and the wiring 206. It can lower the potential and prevent charging. Furthermore, the amount of exposure to electromagnetic waves can be reduced by the conductive layer 205 absorbing, reflecting, and blocking electromagnetic waves.

Furthermore, although the conductive layer 205 is provided here, the frame 210 may be made of, for example, a conductive sponge and the conductive layer 205 may be used. Furthermore, the frame 210 may be grounded.

Further, although not shown here, by providing an upper surface pin such as a metal on the upper part of the support column 202, it is possible to increase pressure stimulation and strengthen conduction.

According to this embodiment, the mattress 200 can support a healthy life by providing electrical conductivity to the support pillars 102 and grounding them, thereby allowing discharge to occur naturally from the body during sleep.

<Modification 1 of the third embodiment>
FIG. 19 shows a perspective view of the mattress 200A. As illustrated, the mattress 200A is a cushion material that allows current from a power source to flow through a living body. In the mattress 200A, the conductive layer 205 is divided into predetermined ranges in contact with each support column 202, and each division is surrounded by a spacer 207 made of an insulator to prevent short circuits between the divisions. The conductive layer 205 in each section separated by the spacer 207 is connected to a positive electrode or a negative electrode of a power source 208 by a wiring 206, respectively. Note that the wiring is not necessarily limited to this, and any type of wiring may be used as long as the strut portion 202 connected to each of the positive and negative electrodes has a configuration in which at least one positive and negative electrode is in contact with the living body at the same time as a pair.

Further, the power supply may be supplied to the support sections 202 individually or for each group consisting of a plurality of support sections 202. In addition, the order in which power is supplied to the plurality of pillars 202 can be set in the order of drawing a circle with respect to the arrangement of the pillars 202, in the order of drawing a straight line, or in an order that varies randomly, and the current intensity can be changed in any of these orders. By gradually changing the electrical stimulation applied to the living body, the electrical stimulation applied to the living body can be changed in a rotational manner, linearly, randomly, or by gradually changing the current intensity. For example, stimulation such as stroking can be given. Further, the structure may be such that, for example, a conductive layer is further provided under the spacer 207 and the conductive layer 205, and the wiring board is surrounded. Furthermore, it is also possible to divide the pillars 202 into groups for each column, row, etc., and to connect each group to the power source 208 by wiring.

The power source 208 is, for example, a battery that generates current, a circuit connected to the battery, or a circuit that can be supplied with power from an outlet. Note that the battery may be a secondary battery or a solar battery. Further, a switch may be provided to temporarily disconnect the wiring 206. This can prevent excessive current from flowing during use. Further, a current limiting diode, a resistor, or the like may be provided to control the amount of current. Furthermore, when controlling the amount of current using a current limiting diode, a resistor, etc., the amount of current can be controlled by connecting a control circuit provided with these.

Further, the structure is such that each block is divided into blocks such as the head, shoulders, back, waist, and feet, and each block member is provided with the above-mentioned base and a plurality of pillars, and each block is fitted into the mattress body, A configuration may be adopted in which a block member provided with a circuit and a block member provided with no circuit can be selected.

Further, the waveform may be one in which a pulse wave is superimposed on the upper end of a fundamental wave which is a low frequency wave. The waveform may be such that at least a portion of the rising and falling edges in the period of the waveform rise or fall slowly. The amplitude of the pulse wave may fluctuate periodically, and the fluctuation period of the amplitude may be larger or smaller than the period of the fundamental wave.

Furthermore, voice, music, and their overtones may be used as the current. This is thought to further activate the living body and provide a high massage and relaxing effect. Alternatively, audio or music may be output from a speaker, synchronized, and converted into an electric current. Furthermore, by slightly shifting the timing, it is possible to give the sensation of the air vibrations from the speaker penetrating into the body. Furthermore, operations such as synchronizing speaker sound with music and current with sound may be combined.

For example, there are 1/f fluctuations and 528Hz music called the frequency of love. Furthermore, it is classified into δ waves (0.5~3Hz), θ waves (4~7Hz), α waves (8~13Hz), and β waves (14~30Hz) depending on the wavelength. δ waves are during deep sleep, and θ waves are during slumber. It is said that alpha waves mainly appear when the body is at rest, and beta waves mainly appear when the body is awake or excited. It is said that when you are in a relaxed state, alpha waves are dominant. In order to lead to these states, a control device that controls the wavelength may be provided. In addition, it measures the tossing and turning, breathing, pulse, etc. to predict the sleep state, infers whether the current state needs to be continued or changes based on the sleeping time, etc., and uses the wavelength, current, and sound intensity to induce the sleep state. may be controlled.

According to the mattress 200A, when the user lies on the mattress 200A and both of the support columns 202 connected to the positive electrode or the negative electrode contact the skin at the same time, the current from the positive electrode of the power source 208 is connected. It flows into the living body via the conductive layer 205 of the compartment and the pillar section 202. Thereafter, the current flows to the negative electrode of the power source 208 via the column section 202 and the conductive layer 205 connected to the negative electrode. Thereby, when the mattress 200A is used, an electric current flows to the living body, and the living body's activities can be activated. Such electrical stimulation can be expected to have the effect of adjusting the ionic arrangement of the body's cell tissues, regulating the body's condition by stimulating the sympathetic nerves, and curing or preventing diseases. By wearing clothes made of conductive material while sleeping, you can receive electrical current throughout your entire body.

Furthermore, for example, pulse waves can stimulate the body as electromagnetic waves even if they do not come into direct contact with the skin.

<Modification 2 of the third embodiment>
Next, a description will be given of a mattress 200B that is capable of passing a weak current through a living body by using an auxiliary member with a potential difference. FIG. 20 is a cross-sectional view of mattress 200B. As shown in the figure, in the mattress 200B, electrode pins are inserted and fixed to the pressing surface side of the support column 209. Note that the tip of the foot portion 211P of the electrode pin has a bulged anchor shape to prevent it from falling off from the support portion 209.

The electrode pin consists of a first electrode pin 211 and a second electrode pin 212, which are made of different metals. Specifically, the first electrode pin 211 is made of a metal that has a smaller ionization tendency than the metal selected for the second electrode pin 212, such as gold, platinum, silver, or copper. A material having a greater ionization tendency than the metal selected for the first electrode pin 211, such as zinc, titanium, aluminum, tungsten, stainless steel, silver, or copper, is used. Note that the material that can be used as the electrode pin is not limited to metal. Any combination may be used as long as it can generate a weak current in a living body by utilizing a difference in potential (ionization tendency). For example, not only different metals but also conductive polymers, conductive oxides, etc. may be combined. Alternatively, it may be something called a semiconductor.

Further, the first electrode pin 211 and the second electrode pin 212 are electrically connected to each other via the support portion 209 and the conductive layer 205. The connection method is not limited to this, and the connection may be made by wiring, for example. Further, in this embodiment, the same type of electrode pins are arranged with rows arranged in the horizontal direction of the bed mattress as one group, and the first electrode pins 211 and the second electrode pins 212 are arranged alternately in each row. It is the composition. However, the present invention is not limited to this, and any arrangement may be used as long as both electrically connected electrode pins are located in contact with the skin at the same time.

In such a mattress 200B, since the first electrode pin 211 and the second electrode pin 212 have a potential difference, when they come into contact with the skin, an electrical closed circuit is formed between the two electrodes and the skin, and it is absorbed into the living body. Can send a weak current. Specifically, the part of the body that the first electrode pin 211 and the second electrode pin 212 come into contact with plays the role of an electrolyte in the battery, and one electrode brush (here, the second electrode pin 212 and Positive ions are ionized from the first electrode pin (here, the first electrode pin 211), and electrons move to the other electrode pin (here, the first electrode pin 211) that functions as a positive electrode, creating a potential difference between the two electrode pins. This potential difference causes a weak current to flow within the living body. The weak current varies depending on the condition of the skin surface, external environment (temperature, humidity, etc.), pressing strength, etc., but is, for example, 0.1 μA to 50 μA, preferably 0.3 μA to 20 μA. Further, the voltage generated between the two electrodes is, for example, 100 mV to 3 V, preferably 200 mV to 2.6 V.

According to such a mattress 200B, the weak current enters the dermal layer of the skin without damaging the surface tissue of the skin, and adjusts the ionic arrangement of the body's cell tissues. In addition, by stimulating the sympathetic nervous system, it can be expected to have the effect of regulating the body's condition and curing or preventing illness. Furthermore, the antibacterial and antiviral effects of metal materials can keep the skin healthy.

Although the above example is a mattress, it may also be applied to items that come into direct contact with the skin.

<Variation 3 of the third embodiment>
FIG. 21 is a cross-sectional view of the elastic body 200C. The elastic body 200C is a thin elastic body used, for example, as an insole for shoes. As illustrated, the elastic body 200C has a conductive support column 215 that can be fitted into a hole 216 formed in a base 217. Note that the hole 216 does not penetrate the base 217 here.

At least one first electrode pin 211 and at least one second electrode pin 212 are inserted into and fixed to the support portion 215 at separate positions. Note that a groove 214 is formed between the first electrode pin 211 and the second electrode pin 212 to prevent the two pins from coming into contact and causing a short circuit. Note that a member made of an insulator may be provided in the groove portion.

According to such an elastic body 200C, when the elastic body 200C is used as a shoe sole, the sole of the foot or the like comes into contact with both electrode pins, thereby allowing a weak current to flow inside the living body. The effect will be even greater if you use it barefoot or wear socks made of conductive material. Furthermore, it is not necessarily necessary to use it for the sole of a shoe; for example, it can be used as a cushion for socks, gloves, or racing pants, or it can be worn inside a pocket, underwear, gloves, or the like.

<Modification 4 of the third embodiment>
FIG. 22 is a cross-sectional view of the elastic body 200D. The elastic body 200D is a band-shaped elastic body to be wrapped around the neck, arms, torso, legs, etc., for example. As illustrated, the elastic body 200D has a conductive support column 220 that can be fitted into a hole 219 provided in a band-shaped base 218. Further, the support portion 220 is provided with at least two insertion holes 221A that are through holes, and the base portion 218 is also provided with an insertion hole 221B that penetrates from the bottom surface of the hole 219 to the bottom surface of the base portion 218. . When the support section 220 is fitted into the hole 219, the openings of the insertion hole 221A and the insertion hole 221B are configured to fit perfectly, and the first electrode pin 211 and the second electrode pin are inserted through both holes. 212 can be fixed. Note that at least one first electrode pin 211 and at least one second electrode pin 212 are provided for one support portion 220.

According to such an elastic body 200D, when the band is wrapped around the body and used, the body comes into contact with both electrode pins, thereby allowing a weak current to flow inside the living body. In addition, it can be applied to various things that can be wrapped around the body, such as watch bands, bracelets, necklaces, belts, corsets, anklets, etc.

<Variation 5 of the third embodiment>
FIG. 23 is a cross-sectional view of the elastic body 200E. As shown in the figure, the elastic body 200E is a piece that includes at least one support column 220 of the elastic body 200D described above, and is used by being attached to the body with an adhesive tape 222.

According to such an elastic body 200E, it can be attached to any position of the body with an adhesive tape, and it can be used as a pressing instrument that sends a weak current inside a living body.

Note that, as shown in FIG. 24(a), a base 223 provided with a cutting portion 224 may be used instead of the support portion 220. As shown in the figure, when the adhesive tape 222 is applied to the curved surface of the body, the elastic body 200F is pressed against the skin and tries to bend, but the cutting part 224 buffers the force in the bending direction, so that the base part 223 This can prevent excessive bending. This makes it difficult for both electrode pins to come into contact with each other, thereby preventing short circuits, and allowing the user to use the device comfortably without feeling stiff. In addition, by using an elastic body, the pressing device can be made lightweight, and because it is contractible, it can be easily brought into close contact with the skin. For example, when attaching a device with tape, it is possible to prevent irritation of the skin and skin disorders due to the increase in tension of the tape due to contraction of the skin when muscles expand and contract. .

Furthermore, an elastic body as shown in FIGS. 24(b) to 25(d) may be provided. The elastic body 200G shown in FIG. 24(b) is an example in which an insertion hole 226 for an electrode pin and a cutting portion 225 that vertically penetrates a base 227 are provided. Note that the cutting portion 225 does not completely cut off the base 227, and the base 227 is continuous at a portion not shown. Further, as shown in FIG. 24(c), the elastic body 200H may be provided with a cut portion 225A extending halfway through the base 228, or as shown in FIG. 24(d), the head of the electrode pin may be attached to the base 229. The elastic body 200I may be provided with an insertion hole 230 large enough to accommodate the portion 231 and lower the protruding portion of the electrode pin. By fitting the head 231 of the electrode pin into the insertion hole 230, the effect of preventing short circuits is further enhanced.

Alternatively, as shown in FIG. 25, an elastic body 200G may be provided with a power source 208 that causes current to flow through the electrode pins 232. It should be noted that since the electrode pins 232 are intended for application, there is no need to use a separate material, and a power source 208 connected to each electrode pin 232 is provided inside the base 223. Note that for the connection between the power source 208 and the electrode pins 232, it is preferable to use a current-carrying member 233 such as a metal foil or a metal tube, for example. By surrounding the foot portion 234 with the current-carrying member 233 so that they are in contact with each other, and by connecting the power source 208 to the current-carrying member 233, it is possible to prevent the connection from being interrupted even if the foot portion 234 moves significantly. Such an elastic body 200G can be used not only for simple electrical therapy but also for EMS and other life-saving equipment inside and outside hospitals.

Although the bioelectrical stimulation device according to the present invention has been described above, these are only examples of the present invention, and the present invention is not limited thereto. The present invention includes combinations of the above-described embodiments and modifications, as well as various modifications. Various additions, changes, and partial deletions are possible without departing from the conceptual idea and gist of the present invention derived from the content defined in the claims and equivalents thereof.

100 Cushion material 101 Base portion 102 Support portion 103 First peripheral wall surface 113 Cutting groove 200 Mattress

Claims (8)

A cushioning material that is formed by containing an elastic material and deforms into a concave shape when pressed,
having a first support member and a second support member formed of the same material,
The second support member is independent from the first support member at least on the pressing surface,
The first support member has a first peripheral wall surface surrounding the second support member,
The outer peripheral surface of the second support member and the first peripheral wall surface of the first support member surrounding the second support member have the same height,
A plurality of the second support members are lined up with the first support member sandwiched between them, and six of the second support members have a circumference approximately the same size as that of the second support member on the inner side of one of the second support members. , a cushioning material characterized in that the distance between adjacent cushioning materials is smaller than the width of the cushioning material. The cushioning material according to claim 1,
the first peripheral wall surface reaches the upper and lower surfaces of the first support member,
A cushioning material, wherein an outer circumferential surface of the second supporting member has the same shape as the first circumferential wall surface. A cushioning material that is formed by containing an elastic material and deforms into a concave shape when pressed,
having a first support member and a second support member formed of the same material,
The second support member is independent from the first support member at least on the pressing surface,
The first support member has a first peripheral wall surface surrounding the second support member,
The outer peripheral surface of the second support member and the first peripheral wall surface of the first support member surrounding the second support member have the same height,
The cushioning material is characterized in that the second support member has an auxiliary hole in the center thereof that penetrates in the vertical direction. A cushioning material that is formed by containing an elastic material and deforms into a concave shape when pressed,
having a first support member and a second support member formed of the same material,
The second support member is independent from the first support member at least on the pressing surface,
The first support member has a first peripheral wall surface surrounding the second support member,
The outer peripheral surface of the second support member and the first peripheral wall surface of the first support member surrounding the second support member have the same height,
the first peripheral wall surface reaches the upper surface of the first support member,
A cushioning material characterized in that an outer periphery of the second support member has the same shape as an inner periphery of an annular first bottom wall surface perpendicular to the first peripheral wall surface of the first support member. The cushioning material according to claim 4,
A cushioning material characterized in that a base of the second support member is integrated with a base of the first support member. The cushioning material according to claim 1,
The second support member is provided with a second groove extending in the vertical direction and recessed inward in a top view on the outer peripheral surface,
The first supporting member is a cushioning material, wherein the first supporting member is provided with a first groove extending in the vertical direction and recessed outward in a top view. A mattress comprising the cushioning material according to any one of claims 1 to 6. A cushion or pillow comprising the cushioning material according to any one of claims 1 to 6.

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