WO2023135858A1

WO2023135858A1 - Mattress, sheet-like body, and mattress topper

Info

Publication number: WO2023135858A1
Application number: PCT/JP2022/033274
Authority: WO
Inventors: 晃庸田上
Original assignee: 株式会社錦之堂インターナショナル
Priority date: 2022-01-11
Filing date: 2022-09-05
Publication date: 2023-07-20

Abstract

Provided is a mattress comprising a plurality of coil springs having substantially the same repulsive force and arranged with the heights thereof substantially aligned so as to exert the repulsive force in the vertical direction, the mattress being capable of satisfying both of a demand for achieving a comfortable sleep feeling as if the body is wrapped around and a demand for facilitating turning over, achieving a partial change in an absorbing force without requiring replacement of the plurality of coil springs and the like, and achieving a reduction in manufacturing costs.　A plurality of coil springs 0121 having substantially the same repulsive force and arranged with heights thereof substantially aligned so as to exert repulsive force in the vertical direction are disposed and are configured such that the bodyweight load-bearing amount per unit coil spring 0121 is different depending on an area formed by the uppermost surface of the coil spring 0121 on which the body rests.

Description

Mattresses, sheets and mattress toppers

The present invention relates to a mattress suitable for use as bedding, a planar body to be arranged on the mattress, and a mattress topper to be laid on the mattress.

As mattresses for bedding as described above, two types of mattresses are broadly known: Bonnell coil type mattresses and pocket coil type mattresses.

On the other hand, the Bonnell coil mattress is a mattress in which a plurality of coil springs are arranged so as to expand and contract in the vertical direction, and these coil springs are connected with wires or the like, so that each upper end of the coil spring forms a surface. is. In this Bonnell coil mattress, not only the coil springs to which the pressing force is applied, but also the coil springs adjacent to this coil spring to which the pressing force is not directly applied are compressed to some extent, so that they are connected to each other. A gently curved surface is formed on the upper surface of the coil spring. This Bonnell coil mattress has a structure that can support the body firmly on the surface because the repulsive force is high everywhere on the surface, and it has a feature that it is easy to turn over because the amount of sinking is small. .

On the other hand, the pocket coil mattress is a mattress in which multiple coil springs are arranged so as to expand and contract in the vertical direction, and by wrapping each of these coil springs in a bag, each coil spring can be expanded and contracted independently. be. This pocket coil mattress has the feature that the coil spring sinks along the line of the body, so that a natural posture can be maintained and the body pressure dispersion is excellent.

However, in the Bonn flannel coil mattress, the coil springs that are not directly pressed are also compressed, and as a result, the number of spring coils that are compressed is the number of coil springs that are directly pressed. Outnumbered, the extra coil springs contribute to the repulsive force. Therefore, since the repulsive force is high everywhere, it is hard to sleep on. There are drawbacks.

On the other hand, the pocket coil mattress can solve the drawbacks of the Bonn flannel coil mattress, but since the coil spring sinks along the body line, the waist and buttocks sink greatly and it is difficult to turn over. There is a drawback that the spine tends to bend forward. Also, for example, non-coil mattresses made of medium/low resilience urethane foam or the like have the same problem.

Conventionally, as a mattress that can compensate for the shortcomings of both Bonnell coil mattresses and pocket coil mattresses, for example, there is a spring recombination type mattress described in Patent Document 1.

This recombinable spring mattress has a plurality of pocket spring aggregates of the same size as a rectangular cushion frame, and the pocket spring aggregates are provided with several types of different elastic properties. . In this spring-recombination type mattress, by selecting and accommodating pocket spring aggregates with different elastic characteristics in the cushion frame, it is possible to obtain a comfortable sleeping position and sleeping comfort according to the weight and body shape of the sleeper. there is

JP-A-11-056536

However, in the case of the above-mentioned conventional spring-recombination type mattress, by selecting and using pocket spring aggregates with different elastic properties, although a comfortable sleeping posture and sleeping comfort according to the weight and body shape of the sleeper can be obtained, low back pain If you want to change the hardness partially at any time, you have to reassemble the pocket spring assembly to suit it, or replace the springs that make up the pocket spring assembly with other springs that have different elastic characteristics. However, there is a problem that very complicated and difficult work must be done.
In addition, in the case of the conventional spring-recombination type mattress, in the manufacturing process of pocket springs, it is necessary to manufacture multiple types of coil springs, and there is also the problem of high manufacturing costs. has been a conventional problem. Furthermore, in the case of a spring-recombination type mattress, a non-coil mattress made of medium/low-resilience urethane foam or the like cannot be used.

The present invention has been made by paying attention to the above-described conventional problems, and is a mattress equipped with a plurality of coil springs arranged at substantially the same height so as to have repulsive force in the vertical direction. To satisfy both desires of obtaining a comfortable feeling in bed and facilitating rolling over, and to easily partially change the absorption power without performing work such as exchanging a plurality of coil springs. To provide a mattress capable of reducing the manufacturing cost.
Another object of the present invention is to provide a non-coil mattress made of medium/low resilience urethane foam or the like, which satisfies both desires of providing a comfortable feeling of being wrapped in bed and of being easy to turn over. and

That is, in the mattress according to the first aspect of the present invention, a plurality of coil springs are arranged so that their heights are substantially aligned so as to have a repulsive force in the vertical direction, and the arrangement of the coil springs cannot be changed. Weight load per unit coil spring according to the area composed of the top surface (e.g., head rest area, back rest area, hip rest area, leg rest area, heel rest area, etc.) The load is configured differently.

In the mattress according to the second aspect of the present invention, the load bearing amount of body weight per unit coil spring, which varies depending on the region, is a planar body (in the case of being composed of multiple layers) placed above the coil spring ), or depending on the presence or absence of the area in which the planar body is placed on the mattress, or the individual area of the planar body to be placed.

A mattress according to a third aspect of the present invention has a spring coil layer having a plurality of pocketed coil springs. It partially supports specific parts of the human body lying on the upper surface side, such as the waist, buttocks, head, and legs of the human body.

The above-mentioned pocket coil spring is obtained by housing (wrapping or inserting) a coil spring in a slightly compressed state in a bag made of nonwoven fabric or the like. It should be noted that the coil springs may be packed one by one, or the coil springs may be accommodated one by one in each pocket of a bag body that partitions a plurality of pockets, and the plurality of coil springs may be collectively packed in a bag. It may be For example, a steel wire having a wire diameter of about 1.4 to 2.2 mm is used for the coil spring. The number of pocket coil springs used in one bed is, for example, 500 to 650 for a single bed, 700 to 800 for a semi-double bed, and 850 to 950 for a double bed.
The spring coil layer is formed by arranging a plurality of pocket coil springs in parallel or alternately in a horizontal direction, and is an assembly of the plurality of pocket coil springs.

The planar body is partially disposed on the upper surface side of the spring coil layer, and has a size that spans over the plurality of pocket coil springs and partially covers specific parts of the human body, such as the waist, buttocks, head, and legs of the human body. It is elastic (flexible) and preferably has a rebound resilience rate of 15% or more and 90% or less, more preferably 20% or more according to JIS K 6400-3. , 85% or less, for example, a resin foam or a continuous filamentary body made of resin is irregularly meandering and entangled, and is adhered everywhere in the meandering state, and the space between the continuous filamentous bodies is continuous and has a predetermined thickness, that is, a three-dimensional network structure (fiber material) in which continuous filaments are intertwined three-dimensionally and continuous voids are formed. Its shape is not particularly limited, and may be, for example, a triangle, a rectangle, a hexagon, a polygon such as a polygon formed by connecting at least one side of a regular hexagon, a circle, an ellipse, or the like.

The planar body of the mattress according to the fourth aspect of the present invention corresponds to the waist and buttocks of the human body and supports the waist and buttocks of the human body.

The planar body of the mattress according to the fifth aspect of the present invention corresponds to the head of the human body and supports the head of the human body.

The planar body of the mattress according to the sixth aspect of the present invention corresponds to the leg of the human body and supports the leg of the human body.

The planar body of the mattress according to the seventh aspect of the present invention is preferably a planar body that supports the waist and buttocks of the human body corresponding to the waist and buttocks of the human body, and is divided into a plurality of divided planar bodies. It is a combination of bodies.
The planar body and the divided planar body are preferably polygonal in plan view, more preferably regular triangles, squares, regular hexagons, polygons formed by connecting at least one side of regular hexagons, and the like. be.

The planar body of the mattress according to the eighth aspect of the present invention is preferably a planar body that corresponds to the waist and buttocks of the human body and supports the waist and buttocks of the human body, wherein the divided planar body is the mattress. are arranged in parallel in the width direction perpendicular to the length direction.

The planar body or divided planar body of the mattress according to the ninth aspect of the present invention has a constricted portion with a partially reduced width at the central portion in the longitudinal direction or the lateral direction.

The planar body of the mattress according to the tenth aspect of the present invention is provided with through holes or recessed grooves to enhance flexibility. For example, a plurality of through-holes or concave grooves may be provided radially or may be provided annularly.

In a mattress according to an eleventh aspect of the present invention, an elastic planar body is partially disposed on the upper surface side of a base mat layer made of urethane foam, and the planar body is provided on the upper surface side of the base mat layer. It partially supports specific parts of the human body lying on the floor, such as the waist, buttocks, head, and legs of the human body.

The base mat layer is a non-coiled one that does not use a coil as a core material. Urethane foam (JIS K 6401) is used.

A planar body according to a twelfth aspect of the present invention has elasticity, is partially arranged on the upper surface side of a spring coil layer having a plurality of pocket coil springs, and lies on the upper surface side of the spring coil layer. It partially supports specific parts of the human body, such as the waist, buttocks, head, and legs of the human body.

A planar body according to a thirteenth aspect of the present invention has elasticity, is partially arranged on the upper surface side of a base mat layer made of urethane foam, and is used to specify a human body lying on the upper surface side of the spring coil layer. It partially supports parts such as the waist, buttocks, head, and legs of the human body.

On the other hand, in the fourteenth aspect of the planar body set of the present invention, the uppermost area of the bedding including the mattress on which the body is placed (for example, the area on which the head is placed, the area on which the back is placed, the area on which the buttocks are placed, It is composed of a plurality of planar bodies arranged on the upper side of the mattress in order to change the weight load per unit area according to the area where the legs are placed, the area where the heels are placed, etc.

A mattress topper according to a fifteenth aspect of the present invention is partially disposed on the upper surface side of a base layer having cushioning properties, has elasticity, and is used for a specific part of the human body lying on the upper surface side of the mattress topper, for example, It is laid on the upper surface side of a mattress having a sheet-like body that partially supports the waist, buttocks, head, legs, etc. of a human body, and in which a spring coil layer having a plurality of pocket coil springs is embedded.

The base layer may be anything as long as it has a cushioning property. , a combination of which is used. Preferably, by combining medium/low-resilience material on the upper surface side and high-resilience material on the lower surface side, the medium/low-resilience material provides good fit and load distribution to the body, and the high-resilience material provides support for the entire body. Sinking can be suppressed and the load on the body can be reduced.

A mattress topper according to a sixteenth aspect of the present invention is partially disposed on the upper surface side of a base layer having cushioning properties, has elasticity, and is used for specific parts of the human body lying on the upper surface side of the mattress topper, for example, Equipped with a planar body that partially supports the waist, buttocks, head, legs, etc. of the human body, for example, medium resilience urethane foam or 15 It is laid on the upper surface side of the mattress made of urethane foam such as low-resilience urethane foam (JIS K 6401) with less than 10%.

According to the present invention, in a mattress equipped with a plurality of coil springs arranged with substantially the same height so as to have a repulsive force in the vertical direction, a comfortable feeling of being wrapped up in sleep can be obtained, and it is easy to turn over. Furthermore, it is possible to easily change the absorption force partially without modifying the plurality of coil springs, and in addition, it is possible to reduce the manufacturing cost.
In addition, a mattress made of urethane foam provides a very good effect of providing a comfortable feeling of being wrapped in bed and easily turning over.

1 is an overall perspective view of a bed using a mattress according to Embodiment 1. FIG. Sectional drawing from the bed side direction of the mattress shown to FIG. 1A. FIG. 1B is a partially enlarged perspective view of the exposed spring coil layer at the corner of the mattress shown in FIG. 1A; Fig. 1B is an overall perspective view of the mattress in Fig. 1A with the cover removed. Sectional drawing equivalent to FIG. 1B of the state which the person is lying on his back on the mattress. Sectional drawing equivalent to FIG. 1B of the state which the person is sleeping on the back on the conventional pocket coil mattress. Sectional drawing equivalent to FIG. 1B of the mattress which concerns on Embodiment 2. FIG. Fig. 1B is an overall perspective view corresponding to Fig. 1A with all of the cover and the leg side portion of the cushion layer removed from the mattress; FIG. 2B is a sectional view corresponding to FIG. 2A showing a state in which a person is lying on his or her back on a mattress; Sectional drawing equivalent to FIG. 2A which shows the example of a changed completely type of the mattress which concerns on Embodiment 2. FIG. FIG. 11 is a partially enlarged cross-sectional view of a planar body of a mattress according to Embodiment 3; FIG. 11 is a partially enlarged cross-sectional view showing a modified example of the planar body of the mattress according to Embodiment 3; 13 is another partially enlarged plan view of the planar body of the mattress according to Embodiment 3. FIG. The top view of the planar body of the mattress which concerns on Embodiment 4. FIG. A plan view showing an arrangement example of the planar body in FIG. 4A with respect to the single bed. FIG. 4A is a plan view showing an arrangement example of the planar body for the semi-double bed in FIG. 4A. A plan view showing an arrangement example of the planar body in FIG. 4A with respect to the double bed. FIG. 11 is a plan view of a modification of the planar body of the mattress according to Embodiment 4; AA sectional view of FIG. 4E. Explanatory drawing which shows the mark used as the arrangement position of the planar body of the mattress (single) in Embodiment 4. FIG. FIG. 11 is an explanatory diagram of an example of arranging a planar body on the mattress (single) according to Embodiment 4 based on a mark indicating the arrangement position of the planar body; FIG. 11 is an explanatory diagram of a state in which a tall person is lying on his back on a mattress (single) according to Embodiment 4, on which a planar body is placed based on a mark indicating the placement position of the planar body; FIG. 12 is an explanatory diagram of a state in which a short person is lying face up on a mattress (single) according to Embodiment 4, on which a planar body is placed based on a mark indicating the placement position of the planar body; FIG. 11 is an explanatory view of a state in which a person is lying on his/her back on a mattress (semi-double) according to Embodiment 4, on which a planar body is arranged based on a mark indicating the arrangement position of the planar body; The whole perspective view of the sofa using the mattress which concerns on Embodiment 5. FIG. FIG. 11 is an overall perspective view of a planar body set according to Embodiment 6; FIG. 6B is an enlarged cross-sectional view of the planar body set in FIG. 6A taken along line A-A. Schematic diagram of the region Wb receiving a large surface pressing force from the waist and buttocks viewed from the head direction The schematic diagram which looked at the area|region Wh which receives a big surface pressing force from a head from the head direction. FIG. 4 is a schematic diagram of a region Wl receiving a large surface pressing force from a leg viewed from the direction of the leg. _{図６Ａの面状体セットを構成する面状体が正三角形である場合の一配置例を示す平面図。FIG. 6B is a plan view showing an arrangement example in the case where the planar bodies constituting the planar body set of FIG. 6A are equilateral triangles;} _{図６Ａの面状体セットを構成する面状体が正方形である場合の一配置例を示す平面図。FIG. 6B is a plan view showing an arrangement example in the case where the planar members forming the planar member set of FIG. 6A are square;}

An embodiment of the present invention will be described below. The mutual relationship between the embodiments and the claims is as follows. The present invention is by no means limited to these embodiments, and various aspects can be implemented without departing from the gist of the present invention.

<Embodiment 1>
Embodiment 1 relates to a mattress used for a bed. The main feature of the mattress of Embodiment 1 is that a mattress having a plurality of coil springs that are arranged so that their heights are substantially aligned so as to have a repulsive force in the vertical direction and are arranged so that the arrangement cannot be changed, a so-called pocket coil mattress, For example, depending on the area composed of the top surface of the coil spring on which the body rests (for example, the head rest area, the back rest area, the waist and buttock rest area, the leg rest area, the heel rest area, etc.) The point is that the weight bearing load per unit coil spring is made different. As a result, for example, in a region that supports the waist and buttocks, which receives a large surface pressing force from a person sleeping on the mattress in a supine position, the load of body weight per unit coil spring of a plurality of adjacent coil springs constituting this region On the other hand, the weight burden per unit coil spring is kept as it is in the areas where the back and legs are placed, where the pressing force on the same surface is small.

That is, as shown in FIG. 1A, the bed 0100 using the mattress of Embodiment 1 is a single size bed, and includes a floor board 0101 on which the mattress 0110 is placed and a head of the floor board 0101. A headboard 0102 is arranged on the side (upper right in the figure), and legs 0103 are arranged below the floorboard 0101 and horizontally support the floorboard 0101 together with the headboard 0102 at an appropriate height.

As shown in the sectional view from the side of the bed in FIG. 1B, the mattress 0110 includes a spring coil layer 0120 and a cushion layer 0130 laminated above the spring coil layer 0120 via a shock absorbing nonwoven fabric 0111. , a hard cotton (hard cotton) 0112 covering the upper surface of the cushion layer 0130, and a cover 0113 for housing the spring coil layer 0120, the cushion layer 0130 and the hard cotton 0112 as a whole. By opening a fastener 0114 (indicated by a dashed line in FIG. 1A) provided over the entire circumference, the contents can be inspected, etc., as required.

FIG. 1C is a partially enlarged perspective view of the spring coil layer exposed at the corner portion of the mattress, and as shown in FIGS. A plurality of coil springs 0121 having substantially the same repulsive force are provided. In this spring coil layer 0120, by wrapping each of the plurality of coil springs 0121 in a bag 0122, when the spring coil layer 0120 is observed alone, each coil spring 0121 is allowed to expand and contract independently. ing.

In this case, the bags 0122 of the adjacent coil springs 0121 are connected by an adhesive to prevent the coil springs 0121 from biting each other (in FIG. 1B, the bags 0122 are spaced apart for clarity). shown). In addition, the upper surfaces of the plurality of coil springs 0121 wrapped in the bag 0122 are connected to each other by a shock-absorbing nonwoven fabric 0111 to such an extent that their free vertical expansion and contraction are not greatly hindered.
In the mattress 0110 having the spring coil layer, the spring coil layer 0120 serves as a core material, and from the core material toward the surface side, for example, net, urethane foam (inner), nonwoven fabric 0110, urethane foam (outer). , an outer material, etc. are provided, but illustration thereof is omitted here.

The cushion layer 0130 is made of sponge-like urethane foam, which is one of plastic foams made by resinifying and foaming a substance refined from crude oil, for example. , Profile urethane formed by profile processing that creates unevenness on the surface. In FIG. 1B, the unevenness on the surface is provided only on the lower side of the cushion layer 0130, but the unevenness is not limited to this, and the unevenness may be provided only on the upper side or on both the upper and lower sides. If the unevenness is on the upper side, the fit to the human body lying on the mattress 0110 and the body pressure dispersion can be enhanced, and if the unevenness is on the lower side, the cushioning property can be enhanced. In addition, the urethane foam that has undergone profile processing in this way has good breathability. The unevenness may be composed of a gentle mountain-like convex portion and a foot portion formed between mountains. When viewed from above, the gentle mountain-like projections are round and preferably have an outer radius of about 3 cm to 8 cm. This outer radius may have different values depending on the region when the cushion layer 0130 is viewed from above. In Embodiment 1, the cushion layer 0130 is laminated on the spring coil layer 0120 with the uneven surface 131 facing the nonwoven fabric 0111 for shock absorption. In addition, as will be described later, the cushion layer 0130 may be configured by laminating a plurality of materials having different repulsive forces, and may be arranged so that the repulsive forces differ depending on the region when observed from above. may be configured to

The hard cotton 0122 that covers the upper surface of the cushion layer 0130 is a plate-like cotton material obtained by compressing polyester, wool, etc. after applying resin processing or heat processing, and has a high density and a certain degree of hardness. Therefore, it is possible to obtain high cushioning properties.
However, in carrying out the present invention, the hard cotton 0122 may be omitted if the thickness of the cushion layer 0130 can reduce contact with the edges and corners of the planar body. Further, for example, the cushioning property may be enhanced by a quilting process in which solid cotton, profile urethane, or the like is inserted between the front and back fabrics (outer material) and machine-sewn (stabbing).

In the first embodiment, as shown in FIG. 1B, the amount of weight load per unit coil spring is changed according to the region formed by the uppermost surfaces of the plurality of coil springs 0121 in the spring coil layer 0120 described above. It is configured. That is, for example, in the region X (central region of the spring coil layer 0120 in the longitudinal direction of the bed) that supports the lumbar and buttocks, which receives a large surface pressing force from a person sleeping on the mattress 0110 in a supine position, this region X By reducing the weight load per unit coil spring of the plurality of adjacent coil springs 0121X constituting the . In principle, this dispersion is performed while the upper surface of the bed is flat.
In addition, it is desirable that the area X receiving a large surface pressing force includes at least two coil springs 0121 in the longitudinal direction of the bed and two coil springs 0121 in the width direction of the bed, for a total of four or more coil springs 0121 . This is because if the number of coil springs 0121 is less than four, the weight load per unit coil spring is increased, and the effect of dispersing the surface pressing force is reduced.

In order to reduce the weight load per unit coil spring of the plurality of adjacent coil springs 0121X forming this region X and disperse the surface pressing force, the region X of the cushion layer 0130 should be distributed. A high elastic modulus portion 013H having a high elastic modulus is used as a portion corresponding to , and a low elastic modulus portion 0130L having a low elastic modulus is used as a portion corresponding to the region Y located on the head support side and the leg support side of the region X. can be adopted.

As shown in FIG. 1D with the cover removed, in the first embodiment, the high elastic modulus portion 0130H having a high elastic modulus is arranged only in the support portion of the waist and buttocks of the cushion layer 0130, and the support portion of the waist and buttocks. A low elastic modulus portion 0130L having an elastic modulus lower than that of the high elastic modulus portion 0130H is arranged in the other supporting portion.
At this time, the high elastic modulus portion 0130H and the low elastic modulus portion 0130L that constitute the cushion layer 0130 may be separated from each other or may be integrally formed. In addition, the high elastic modulus portion 0130H, which has a higher elastic modulus than the low elastic modulus portion 0130L, employs urethane foam with a high elastic modulus itself, or superimposes a high elastic modulus urethane foam on the low elastic modulus portion 0130L. can be formed by
Note that, as means for reducing the weight load amount per unit coil spring of the plurality of adjacent coil springs 0121X forming the region X and dispersing the surface pressing force, there is a second embodiment described later. , a configuration can be adopted in which a planar body is arranged on the region X supporting the waist and buttocks where the surface pressing force of the spring coil layer 0120 is large.

As shown in FIG. 1E, in Embodiment 1, the low elastic modulus portion 0130L is arranged in the head support portion and the leg support portion of the cushion layer 0130, and the high elastic modulus portion 0130H is arranged in the waist and buttocks B support portion. Therefore, in the area X where a large surface pressing force (thick arrow in the figure) is received from the waist and buttocks B, the weight per unit coil spring of the plurality of adjacent coil springs 0121X constituting this area X is The amount of load is reduced, and a small surface pressing force (small arrow in the figure) shared by the plurality of adjacent coil springs 0121X is received. Therefore, the amount of sinking of each of the plurality of coil springs 0121X that constitute this region X is greater than the amount of sinking of each of the coil springs 0121 that receive a moderate surface pressing force (thin arrows in the figure) from the shoulders S and legs L. become smaller.

At this time, as shown in the cross-sectional view of the conventional pocket coil mattress in FIG. Since 0121X receives a large surface pressing force in a concentrated manner, the sinking amount of each of these coil springs 0121X increases.

As can be seen by comparing FIGS. 1E and 1F, in the mattress 0110 according to Embodiment 1, partial sinking (in the waist and buttocks B) is suppressed to a lesser extent than in the conventional pocket coil mattress.

According to the mattress and bed according to Embodiment 1, a comfortable feeling of being wrapped up in sleep can be obtained, and it is possible to turn over easily. It is possible to carry out the process without adding .

[Embodiment 2]
Embodiment 2 is based on Embodiments 1 and 7, and a feature of Embodiment 2 is that in a so-called pocket coil mattress, for example, an area configured by the top surface of a coil spring on which the body is placed (for example, The weight load per unit coil spring can be varied according to the head resting area, the back resting area, the waist and buttocks resting area, the leg resting area, the heel resting area, etc.).
Further, the mattress according to the second embodiment is characterized in that at least a part of the planar body is made of a plastic plate, and that the planar body can be rearranged. Desired molding can be facilitated by forming at least a part of the planar body from a plastic plate. Also in the second embodiment, the cover is openable and closable by means of a fastener, and when the cover is opened, the planar body accommodated in the cover can be grasped and its arrangement can be freely changed. In addition, since the planar body can be removed, wiped with water, dried, etc., the sanitary condition of the planar body can be maintained.

In the second embodiment as well, for example, in the area supporting the lumbar and buttocks that receives a large surface pressing force from a person sleeping on the mattress in a supine position, the planar body is arranged above the coil spring. Since the weight load per unit coil spring of the plurality of adjacent coil springs forming the region is reduced, the sinking amount of the plurality of coil springs forming the region is suppressed.
Therefore, in this case as well, although a comfortable feeling of being wrapped up in sleep is obtained, in addition to being easy to turn over, the coil springs can be manually changed to change the respective absorbing powers of the plurality of adjacent coil springs. It can be done without adding

As shown in the cross-sectional view from the side in FIG. 2A, the mattress 0210 according to Embodiment 2 is characterized in that, compared with the mattress according to Embodiment 1, the maximum number of coil springs 0221 on which the body is placed is The point is that the planar body 0240 is arranged above the coil spring 0221X in the area receiving a large surface pressing force among the areas constituted by the upper surface. In FIG. 2A, in order to make it easier to understand the presence of the planar body 0240 between the spring coil layer 0220 and the cushion layer 0230, the portion other than the planar body 0240 is represented as a space. Since the thickness of the planar body 0240 is, for example, about 5 mm to 20 mm, preferably about 10 to 15 mm, the space around the planar body 0240 is actually filled with the cushion layer 0230. not

In Embodiment 2, the planar body 0240 is a plastic plate having a rectangular shape and a thickness of, for example, about 10 to 15 mm, as shown in FIG. and rests on the spring coil layer 0220 in the longitudinal central region of the spring coil layer 0220 . That is, it is placed on the spring coil layer 0220 in the region X that supports the waist and buttocks that receive a large surface pressing force. Replacement is possible as appropriate. That is, as described above, the cover is openable and closable by means of the fastener, and by opening the cover, it is possible to change the layout of the planar body 0240 housed in the cover. In addition, since the planar body 0240 can be removed, wiped with water, dried, etc., the sanitary condition of the planar body 0240 can be maintained.

Also in this case, the region X receiving a large surface pressing force has at least four coil springs in total, two in the longitudinal direction of the bed and two in the width direction of the bed, in order to prevent the dispersing effect of the surface pressing force from being weakened. 0221X is desirable. Preferably, the planar body 0240 placed on the spring coil layer 0220 in the region X supporting the waist and buttocks B has a maximum vertical width corresponding to the length direction of the mattress 0210 within the range of 25 cm to 80 cm, more preferably , 30 cm to 75 cm, more preferably 30 cm to 60 cm. Preferably, the planar body 0240 placed on the spring coil layer 0220 in the region X supporting the waist and buttocks B has a maximum width of 25 cm to 80 cm corresponding to the width direction perpendicular to the length direction of the mattress 0210. It is preferably in the range of 30 cm to 75 cm, more preferably in the range of 30 cm to 70 cm, and is less than the full width of the mattress 0210 and is centered. As a result, it is possible to achieve good body pressure dispersion and soft sleeping comfort at low material cost, and the load received by the coil spring 0221X in the region X supporting the waist and buttocks B is reduced by the arrangement of the planar body 0240 that supports the waist and buttocks B of the human body. By dispersing and preventing sinking of the waist and buttocks B, it becomes easy to roll over. However, when carrying out the present invention, the planar body 0240 may be arranged over the entire width of the mattress 0210 . In this case, since the entire mattress 0210 is covered with a cover, it is difficult for the planar body 0240 to be misaligned in the width direction. It becomes difficult to do.

The plastic used for the planar body 0240 is not particularly limited as long as it has elasticity (flexibility) such as rubber elasticity, in other words, flexibility, toughness, cushioning properties, etc., but is lightweight. properties, shock absorption, resilience, durability, moisture resistance, antibacterial properties, heat insulation and heat retention, such as polyethylene (PE) foam, polypropylene (PP) foam, and EVA (ethylene-vinyl acetate copolymer) foam. Polyolefin foam (polyolefin resin foam) such as polyolefin foam, urethane foam, and continuous filaments made of resin are irregularly meandering and entangled, and are adhered everywhere in the meandering state to create a space between the continuous filaments. is continuous and has a predetermined thickness, that is, a three-dimensional network structure or the like in which continuous filaments are intertwined three-dimensionally and continuous voids are present. Preferably, the impact resilience is 15% or more and 90% or less, more preferably 20% or more and 85% or less, according to JIS K 6400-3. In particular, it has light weight, shock absorption, resilience, durability, moisture resistance, antibacterial properties, heat insulation and heat retention, excellent flexibility, weather resistance and workability, and is non-toxic, odorless, and non-polluting. It is preferable to adopt environmentally friendly IXPE (Electron Emission Crosslinked Polyethylene Foam) which has According to IXPE, it is hard to get tired and lasts a long time.

As shown in FIG. 2C, in the second embodiment, since the planar body 0240 is arranged on the spring coil layer 0220 in the region X that supports the waist and buttocks B that receive a large surface pressing force, the waist and buttocks B In the region X where a large surface pressing force (thick arrow in the figure) is received from the region X, the weight load per unit coil spring of the plurality of adjacent coil springs 0221X constituting this region X becomes small, and the plurality of adjacent coil springs 0221X Since the coil springs 0221X receive a small surface pressing force (small arrows in the figure) shared by the coil springs 0221X, each of the plurality of coil springs 0121X forming this region X sinks into a moderate surface pressing force from the shoulders S and legs L. It is smaller than each sinking amount of the coil spring 0121 receiving (slender arrow in the figure).

In Embodiment 2, the planar body 0240 is arranged on the spring coil layer 0220. However, the present invention is not limited to this. may be arranged as shown in . That is, on the spring coil layer 0220, a cushion layer 0230 made of profile urethane is laminated with the concave-convex surface 0231 facing upward. You may make it The urethane foam 0250 prevents the angular and hard feeling of the planar body 0240 from being transmitted to the person lying on the mattress through the hard cotton and the cover. Also in FIG. 2D, the portion other than the planar body 0240 between the cushion layer 0230 and the urethane foam 0250 is represented as a space. The space around the planar body 0240 is filled with the urethane foam 0250 and does not exist.

In Embodiment 2, the planar body 0240 is arranged only on the spring coil layer 0220 in the region X that supports the waist and buttocks B that receive a large surface pressing force, but the shoulders S and legs L are also supported. A planar body having a different area and elastic modulus from those of the planar body 0240 may also be arranged in the area to be covered.

With the mattress 0210 according to Embodiment 2, as with Embodiment 1, it is possible to obtain a comfortable sleeping feeling that envelops you, and you can easily turn over. can be performed without modifying the coil spring.

That is, the mattress 0210 according to the second embodiment includes a spring coil layer 0220 having a plurality of pocket coil springs 0221 as core materials, and a spring coil layer 0220 partially disposed on the upper surface side of the spring coil layer 0220 and having elasticity. , and a planar body 0240 that supports specific parts such as the buttocks and waist B of the human body lying on the upper surface side of the spring coil layer 0220 .

According to the mattress 0210 according to the second embodiment, the planar body 0240 having elasticity in the region X supporting the waist and buttocks B of the human body lying on the upper surface side of the spring coil layer 0220 with respect to the upper surface side of the spring coil layer 0220. is partially arranged, and the waist and buttocks B are supported by the elastic planar body 0240, so the load of the pocket coil springs 0221X of the spring coil layer 0220 is dispersed in the region X supporting the waist and buttocks B. Thus, deep sinking of the pocket coil springs 0221 in the spring coil layer 0220 is suppressed.

That is, in the region X corresponding to the waist and buttocks B of the human body, the elastic planar body 0240 is partially arranged on the upper surface of the pocket coil spring 0221X. In addition to the spring coil layer 022, the elastic planar body 0240 also supports the waist and buttocks B of the human body. By preventing bending, the loss of downward force when turning over is reduced, and the load can be elastically supported by the surface of the planar body 0240, so excess force is reduced. You will be able to roll over smoothly with little rotational force and muscle strength without hanging. Therefore, compared with the case where the spring coil layer 0221 is used alone, it is possible to roll over more easily.
Further, the planar body 0240 is partially disposed on the upper surface side of the spring coil layer 0220, that is, disposed at a position corresponding to a specific part in the length direction of the human body such as the waist and buttocks B of the human body. Since the planar body 0240 does not receive the entire length of the human body, the pocket coil spring 0221 of the spring coil layer 0220 with independent coils conforms to the shape of the human body, fit to irregularities, and disperses body pressure. The function of the spring coil layer 0220 having the pocket coil springs 0221 allows a comfortable sleeping feeling to be wrapped up.

In particular, by supporting the lumbar and buttocks B of the human body lying on the upper surface of the mattress 0210 with the planar body 0240, the sinking and sagging of the lumbar and buttocks B is suppressed, and the human body is prevented from bending in a doglegged shape. Concentration of load on the neck and waist can be reduced, and even a person with low back pain can have a comfortable sleeping posture, and unnatural curvature of the spine can be prevented. By fitting the wearer along the contour of the body, it is possible to easily maintain the gentle S-shaped line of the spine, which is close to the upright state, that is, the curve of the spine, even when lying on one's back, and to easily maintain a natural and comfortable sleeping posture. In addition, even in a sideways sleeping position, the pocket coil spring 0221 fits the shape of the human body and the unevenness of the body, making it difficult for the spine to bend into an unnatural shape. can be maintained. That is, in Embodiment 2, the lumbar and buttocks B of the human body lying on the upper surface of the mattress 0210 are supported by the planar body 0240, but the human body does not have the planar body 0240 disposed on the shoulders of the human body, so that the human body can sleep sideways. The shoulders of the human body do not receive repulsion and pressure from the planar body 0240, and the pocket coil spring 0221 fits the shape and unevenness of the back of the human body, making it difficult for the spine to bend and allowing the sleeping posture to stretch the spine. It is easy to form.
Therefore, a comfortable sleeping posture can be obtained not only for people with low back pain but also for those who do not. That is, it is possible to provide a sleeping posture that places less burden on the human body.

In the mattress 0210 according to the second embodiment, a lightweight plastic plate is used as the planar body 0240 so that the planar body 0240 can be rearranged on the spring coil layer 0220. An excellent effect is obtained in that the position of the planar body can be adjusted according to the body type such as the height of the person using the mattress 0210 .

That is, in the mattress 0210 according to the second embodiment, the cover that wraps the whole including the spring coil layer 0220 and the planar body 0240 can be opened and closed by a fastener. The position of the body 0240 can be arranged at a position corresponding to a specific part such as the waist and buttocks B of the user according to the user's height and body type (physique). In addition, since the planar body 0240 can be removed, wiped with water, dried, etc., the sanitary condition of the planar body 0240 can be maintained. In addition, even if the planar body 0240 is worn out due to long-term use, it can be replaced with a new one.

Thus, the mattress 0210 according to Embodiment 2 further includes an openable and closable cover that encloses the spring coil layer 0220 and the planar body 0240, and the planar body 0240 is arranged on the upper surface side of the spring coil layer 0220. It is changeable.
Therefore, since the placement position of the device can be adjusted according to the user's height and body type, the load can be reduced regardless of the user's height and body type.

Further, since the planar body 0240 according to the second embodiment is made of resin foam, it has good cushioning properties and is lightweight. Therefore, the amount of sinking of the coil spring 0221 due to the disposition of the planar body 0240 can be suppressed, so that the effect of reducing the load on the human body, including the ease of turning over, can be enhanced. Furthermore, if it is a resin material, it can be easily molded into a desired shape at a low cost, and a smoothness that does not give a feeling of foreignness or discomfort can be obtained.
In particular, if it is made of a closed-cell body, it can provide an appropriate resilience, thereby enhancing the support for tossing and turning. Furthermore, since it is non-absorbent, the propagation of fungi due to permeation of perspiration or the like is suppressed, making it easy to maintain hygiene.
In addition, cross-linked resins (cross-linked polyethylene, etc.) obtained by electron beam cross-linking have a soft surface, so that they feel good on the skin and are less likely to cause a feeling of foreignness or discomfort. Furthermore, by being excellent in flexibility, the fitting property is good, and while the effect of supporting a specific part of the human body and suppressing sagging can be obtained, the fitting property and the body pressure dispersion property can be improved.

[Embodiment 3]
Embodiment 3 is based on Embodiment 2, and is characterized in that when a plurality of planar bodies are arranged on the spring coil layer, the planar bodies are adjacent to each other in the height direction and/or the lateral direction. It is characterized in that it has a connecting portion with the planar body to be connected.

In the mattress according to Embodiment 3, relative displacement with respect to the adjacent planar bodies is prevented both when the plurality of planar bodies are adjacent in the height direction and when adjacent in the lateral direction. will be obtained.

As shown in the partially enlarged cross-sectional view of the planar body in FIG. 3A, the feature of the mattress 0310 according to Embodiment 3 compared to the mattress according to Embodiment 2 is that the planar body 0340 contains profile urethane. An engaging concave portion 0340a is provided as a connecting portion that engages with the convex portion 0331a on the uneven surface 0331 of the cushion layer 0330.
In the mattress 0310 according to Embodiment 3, it is possible to prevent relative displacement of the planar body 0340 with respect to the cushion layer 0330 .

At this time, as shown in the partially enlarged cross-sectional view of the planar body in FIG. facilitation and improvement of air permeability are achieved.

Also, as shown in the partial plan view of FIG. 3C with the cover and the cushion layer removed, when the two

planar bodies

0340A and 0340B are arranged side by side on the spring coil layer 0320, one planar body 0340A may be provided with an engaging groove 0340c as a connecting portion, and the other planar body 0340B may be provided with an engaging protrusion 0340d as a connecting portion that engages with the engaging groove 0340c of the planar body 034A.

In the mattress according to the present embodiment, relative positional displacement with respect to the adjacent planar bodies can be prevented both when the multiple planar bodies are adjacent to each other in the height direction and when they are adjacent to each other in the lateral direction. It has the effect of

By the way, in Embodiments 1 to 3 above, an example of using profile urethane as the cushion layer 0330 laid on the upper surface side of the spring coil layer 0320 via the planar body 0340 has been described, but the present invention is implemented. In some cases, it is not limited to profiled urethane, but may be non-profiled urethane foam, preferably low-resilience urethane foam having a rebound resilience of less than 15% according to JIS K 6400-3. , continuous filaments made of resin meander and intertwine irregularly, and are adhered everywhere in the meandering state, and the space between the continuous filaments has a continuous predetermined thickness, that is, the continuous filaments It is also possible to use a three-dimensional network structure in which bodies are three-dimensionally entwined and have continuous voids.
Even when a low-resilience urethane foam or a three-dimensional network structure is used as the cushion layer, the body pressure dispersibility can be improved and a relatively soft feel can be obtained. In particular, in the case of a three-dimensional network structure, since the filaments (fibers) of the resin constituting the structure easily bite into the planar body, it is possible to effectively prevent the displacement of the planar body.

Thus, according to the mattresses according to Embodiments 1 to 3, the cushion layer is provided on the upper surface side or the lower surface side of the planar body and on the upper surface side of the spring coil layer, so that the mattress is softer. The mattress gives a feeling and comfortableness to the human body, makes it difficult for the human body lying on the mattress to touch the corners and edges of the planar body, and makes it difficult for the planar body to shift its position following the movement and movement of the human body.

[Embodiment 4]
Embodiment 4 is based on Embodiments 2 and 3, and is characterized in that the planar body is polygonal in plan view.

In the mattress according to Embodiment 4, when a plurality of planar bodies are laterally adjacent to each other, if the planar bodies are, for example, regular hexagons of the same size, three or more adjacent planar bodies By fitting them together as necessary, relative displacement can be prevented.

As shown in the enlarged plan view of the planar body in FIG. 4A, the feature of the fourth embodiment compared to the second and third embodiments is that the planar body 0440 is formed of regular hexagons of the same size. The point is that it is formed in a shape joined by a piece of Such a shape in which regular hexagons of the same size are joined by one piece can enhance the effect of supporting a specific part of the body and preventing sinking, and can also enhance uniform body pressure dispersion.

In the fourth embodiment, the planar body 0440 has through holes 0440a for engagement that engage with the projections on the uneven surface of the cushion layer made of profile urethane, and through holes 0440b for ventilation functioning as ventilation holes. have.

In this case, the engaging through-holes 0440a are arranged near the centers and vertices of the two regular hexagonal portions 0440A and 0440B forming the planar body 0440. As shown in FIG.
On the other hand, as shown in only a part of FIG. 4A, the ventilation through holes 0440b are provided at a plurality of locations (four locations in the illustrated example) between the vertices of the regular hexagons 0440A and 0440B at suitable intervals toward the respective centers. are arranged at a time.

4B, 4C, and 4D illustrate cases where the planar body 0440 is applied to a single mattress, a semi-double mattress, and a double mattress, respectively, and the planar body 0440 is arranged on the spring coil layer 0420. FIG.
4G, 4H, 4I, 4J, and 4K illustrate a mark 0460 indicating the arrangement of the planar member 0440, which is different from that shown in FIGS. 4B, 4C, and 4D.

In Embodiment 4, as shown in FIGS. 4B, 4C, 4D, 4H, 4I, 4J, and 4K, three or more adjacent planar members 0440 are fitted to each other, thereby preventing relative displacement. It will happen.
In addition, since the planar body 0440 has the through-holes 0440a for engagement that engage with the projections on the uneven surface of the cushion layer, it is possible to prevent displacement with respect to the cushion layer.
In addition, in this embodiment, since the planar body 0440 has a plurality of through holes 0440b for ventilation, the planar body 0440 does not hinder ventilation inside the mattress. By providing the through-holes penetrating through the front and back surfaces in this way, stuffiness can be reduced. Furthermore, by providing the through-holes, the flexibility, softness, etc. of the planar body 0440 can be improved, and fit and body pressure dispersion can be enhanced. In other words, by being excellent in flexibility, the fitting property is good, and while obtaining the effect of supporting a specific part of the human body and suppressing sagging, the fitting property and the body pressure dispersion property can be improved.

When carrying out the present invention, the shape of the planar body 0440 and the positions of the through holes formed therein are not limited to those described above and shown in FIG. 4A. As shown in 4F, in a planar body 0440 having a shape in which regular hexagons of the same size are joined by one piece, the length direction is widened from the upper surface side to the lower surface side, that is, it is the most spaced apart. The edges 0440c facing each other may be tapered inversely from the upper surface side to the lower surface side, and the side surfaces of the facing edges 0440c in the length direction may be inclined. As a result, it is possible to further reduce contact with the human body, and it is even more difficult to give a feeling of foreignness and discomfort.
Further, as shown in FIGS. 4A and 4E, the through holes 0440b formed in the planar body 0440 may be arranged in a spiral similar to or similar to a Fibonacci sequence, or the sizes of the through holes 0440b may be changed gradually from the inside to the outside. By increasing , it is possible to achieve both strength, air permeability, and flexibility, to improve fit, and to efficiently discharge moisture.

The mattress according to Embodiment 4 has the effect of preventing relative positional deviation by fitting the adjacent planar members to each other as necessary.
That is, since the planar body 0440 has a polygonal shape, it is possible to increase the planar filling factor and prevent positional deviation. In particular, in the mattress according to Embodiment 4, one sheet of planar body is a polygonal shape formed by joining regular hexagons of the same size with each piece, so that the planar bodies are fitted to each other without gaps. Since they can be placed adjacent to each other, the effect of preventing positional deviation is high.

Thus, in the mattress according to the fourth embodiment as well, the spring coil layer having a plurality of pocket coil springs as the core material, and the spring coil layer partially disposed on the upper surface side of the spring coil layer, having elasticity, and the spring coil It comprises a planar body 0440 of a predetermined shape that supports specific parts such as the buttocks, waist, head, and legs of the human body lying on the upper surface side of the layer.

According to the mattress according to the fourth embodiment, the elastic planar body 0440 is partially arranged in the area supporting the waist and buttocks of the human body lying on the upper surface side of the spring coil layer with respect to the upper surface side of the spring coil layer. Since the elastic planar body 0440 receives the waist and buttocks with its surface, the load of the spring coil layer related to the pocket coil springs is dispersed in the region supporting the waist and buttocks, and the spring coil layer does not sink deeply. Suppressed.

That is, in the region where the load of the human body is applied most in the spring coil layer, that is, in the region corresponding to the waist and buttocks of the human body, the elastic planar body 0440 is partially arranged on the upper surface of the pocket coil spring, Since the lumbar and buttocks of the human body are supported not only by the spring coil layer but also by the elastic planar body 0440, it is possible to prevent the lumbar and buttocks of the human body lying on the top surface of the mattress from sinking greatly and bending the human body into a dogleg shape. . Therefore, the loss of force in the downward direction when turning over is reduced, and the load can be elastically supported by the surface of the planar body 0440, so that a small amount of rotational force and muscle force can be applied without applying excessive force. You will be able to roll over smoothly. Therefore, compared with the case of the spring coil layer alone, it is possible to roll over easily.
In this way, by partially arranging the planar body 0440 on the upper surface side of the spring coil layer, that is, by supporting specific parts such as the buttocks and waist of the human body, the waist and buttocks of the human body are prevented from sinking, and each part of the body is supported. Since the difference between the different amounts of sinking is reduced, and the planar body 0440 serves as a fulcrum, it becomes easy to roll over. In addition, the sinking of the buttocks and waist of the human body is prevented, that is, the load applied to specific parts of the human body is reduced, and it becomes easier to turn over, which promotes blood flow and prevents muscle stiffness. , the burden on the back can be reduced. In addition, since blood flow can be promoted, muscle stiffness can be prevented, and excessive muscle strength is not required for rolling over, awakening of the brain and sound sleep are less likely to be disturbed. Therefore, a comfortable sleeping posture and sleep can be maintained.

Further, the planar body 0440 is partially disposed on the upper surface side of the spring coil layer, that is, disposed at a position corresponding to a specific part in the length direction of the human body such as the waist and buttocks of the human body. Since the entire longitudinal direction is not supported by the planar body 0440, the pocket coil spring of the spring coil layer in which the coil is independent does not impair the shape of the human body, the fit to unevenness, and the body pressure dispersion. , The function of the spring coil layer with pocket coil springs makes it possible to obtain a comfortable sleeping feeling that envelops you.

In other words, the spring coil layer moderately distributes the load of the body to the surroundings, effectively disperses the body pressure, and maintains a comfortable sleeping posture. Sinking is suppressed by arrangement, and the force when rolling over is prevented from escaping, supporting smooth rolling over with less force. As a result, it is possible to improve the effect of providing good quality sleep, recovering from fatigue, and improving poor blood circulation.

In particular, by supporting the lumbar and buttocks of the human body lying on the upper surface of the mattress with the planar member 0440, the sinking and sinking of the lumbar and buttocks is suppressed, and the human body is prevented from bending in a doglegged shape. By concentrating the load on the body and reducing the load, even a person with low back pain can have a comfortable sleeping posture, and the unnatural curvature of the spine can be prevented. Furthermore, since the pocket coil spring fits along the S-shaped curve of the back of the human body, especially since there is no provision of the sheet 0440 on the shoulder or back side of the human body, the pocket coil spring fits the back of the human body. By easily following the S-shaped curve, it is easy to maintain a gentle S-shaped line of the spine that is close to the upright state, that is, the curve of the spine, even in a supine sleeping position, and a natural and comfortable sleeping posture is easily maintained. . In addition, by not arranging the planar body 0440 on the shoulder or back side of the human body, the spine is less likely to bend into an unnatural shape even in a sideways sleeping posture due to the pocket coil spring that fits the shape of the human body's back and unevenness. , the spine can be easily straightened, so a sleeping posture with less load on the human body can be maintained. In the fourth embodiment as well, the waist and buttocks of the human body lying on the upper surface of the mattress are supported by the planar body 0440, but the planar body 0440 is not arranged on the shoulders of the human body, so that the shoulders of the human body lying sideways are covered with a flat surface. The pocket coil spring fits the shape and irregularities of the back of the human body without being repulsed or pressed by the body 0440, so that the spine is difficult to bend and the sleeping posture in which the spine is stretched can be easily formed.
Therefore, a comfortable sleeping posture can be obtained not only for people with low back pain but also for those who do not. That is, it is possible to control the sleeping position to a sleeping posture that places less burden on the human body.

In the mattress according to the fourth embodiment, as shown in FIGS. 4B, 4C, 4D, 4H, 4I, 4J, and 4K, the planar members supporting the waist and buttocks of the human body lying on the mattress are of the same size. It is composed of a combination of a plurality of divided planar members 0440 each having a shape in which regular hexagonal portions of a height are joined by one piece. Therefore, by recombining the number of divided planar bodies 0440 and recombining their arrangement, the waist of the human body can be adjusted according to the user's body shape, preference, physical condition (physical condition), weight, etc., and according to the size of the mattress. The size and position of the planar body that supports the buttocks can be changed, increasing the variation of shapes that can be expressed. That is, depending on the user's body shape, preference, body condition, weight, etc., the number of divided planar members 0440 can be changed and the arrangement can be changed to support the user at an appropriate position that enables a comfortable sleeping posture. allows customization of In addition, in the case of combining a plurality of divided planar bodies 0440, the number of divided planar bodies 0440 is changed according to the size of the mattress, such as a single mattress, a semi-double mattress, and a double mattress, so that the waist and buttocks of the human body can be adjusted. can vary in size. Therefore, since it is not necessary to prepare planar bodies having various areas, the manufacturing cost can be reduced. Depending on the size of the mattress, such as a single mattress, a semi-double mattress, and a double mattress, and depending on the characteristics of the spring coil layer, the number of divided planar bodies 0440, that is, the surface that supports the waist and buttocks of the human body. By changing the area and size of the shaped body, it is possible to adjust the amount of sinking. It is easy to roll over, and the body pressure dispersibility is good, so that the user can form a comfortable sleeping posture. Since the size of the mattress is not limited, the rotation of the mattress can be handled.

As for the size of the divided planar body 0440, for example, the maximum length is about 100 mm to 600 mm, preferably about 300 mm to 500 mm. With regard to the size of the divided planar body 0440, the number of the divided planar bodies 0440 arranged in parallel in the width direction of the mattress in the area supporting the waist and buttocks of the human body is, for example, about 70 to 90 cm in width. A so-called small single mattress requires 1 to 2 sheets, a so-called single mattress with a width of about 95 to 100 cm requires 2 to 4 sheets, and a so-called semi-double mattress with a width of about 110 to 125 cm requires 2 to 5 sheets. There are 3 to 6 sheets for a so-called double mattress with a width of about 140 cm to 145 cm, and about 4 to 8 sheets for a so-called wide double mattress, queen mattress, and king mattress with a width of 150 cm or more. The length of the mattress is, for example, about 180 cm to 210 cm.

That is, in the mattress according to Embodiment 4, the planar body that supports the waist and buttocks of the human body lying on the mattress is formed by combining a plurality of divided planar bodies 0440 . Therefore, the area and position of the planar body that supports the waist and buttocks of the human body can be adjusted according to the user's body shape, preference, body condition, weight, etc., and also according to the size of the mattress and the characteristics of the spring coil layer. It is possible to change. By being able to change the area and arrangement position of the planar body in this way, it is possible for the user to feel comfortable in bed and control the sleeping posture. Those having different properties such as thickness, hardness, elasticity (flexibility), etc. may be prepared and changed according to the user's preference and physical condition. A combination may be used, or the planar bodies 0440 may be stacked in the thickness direction.

Particularly, in the mattress according to the fourth embodiment, the divided planar body 0440 for supporting the waist and buttocks of the human body has its length direction correspond to the length direction of the mattress, and is perpendicular to the length direction of the mattress. A plurality of sheets are arranged in parallel in the width direction. That is, in the width direction of the mattress in the region supporting the waist and buttocks of the human body, there is a seam (boundary) in the longitudinal direction (the length direction of the mattress) between the divided planar members 0440 adjacent to each other in parallel. Therefore, in the width direction of the mattress in the region that supports the waist and buttocks of the human body, there is a vertical joint between the divided planar bodies, and the joint portion corresponds to the edge of the divided planar body 0440 and is integrated with each other. is not continuous, when a force applied to the edge of the joint between the divided planar bodies 0440 when the human body turns over (rotates) while straddling the joint part, the divided planar bodies 0440 The edge side of the seam is more likely to drop than the center side of the seam, and a gradient that inclines from the center side to the edge side of the seam is likely to occur. As a result, the slope provides a rotational force that supports rolling over, making it easier to roll over.

Furthermore, according to the mattress according to the fourth embodiment, as shown in FIGS. An elastic planar body 0440 is also partially arranged in the region supporting the range of . Therefore, since the elastic planar body 0440 receives the head by its surface, the load associated with the coil springs of the spring coil layer is dispersed even in the region supporting the head, and deep sinking of the spring coil layer is suppressed. . Therefore, the head of the human body is prevented from sinking, that is, the body, especially the neck, is prevented from being placed in an unnatural posture, and the head is stably supported by the planar body 0440. It can provide a comfortable sleeping posture.

In addition, according to the mattress according to the fourth embodiment, as shown in FIGS. An elastic planar body 0440 is also partially arranged in the region supporting the range up to the heel. Therefore, since the legs are supported by the planar body 0440 having elasticity, the load associated with the coil springs of the spring coil layer is dispersed even in the region supporting the legs, and deep sinking of the spring coil layers is suppressed. . Therefore, it is possible to prevent the legs of the human body from sinking, that is, to prevent the body from being placed in an unnatural posture, particularly the legs and the waist, and the planar body 0440 that supports the legs. A comfortable sleeping posture can be provided by stable support. Supporting the legs is also effective in relieving leg swelling.

Here, in the mattress according to the fourth embodiment, as shown in FIGS. It is composed of one sheet of planar body 0440 corresponding to a planar body, and the planar body 0440 has a polygonal shape in which the sides of two regular hexagons are joined to each other. It has a shape in which a constricted portion 0440d with a partially reduced width is formed in the central portion. The planar bodies 0440 that support the head and legs of the human body are arranged so that their length directions correspond to the width direction of the mattress, and the narrow width direction of the constriction 0440d is aligned with the length direction of the mattress. It is arranged accordingly. As a result, in the area supporting the head and legs of the human body, when the human body lying across the constricted portion 0440d of the planar body 0440 turns over (rotates), force is applied to the constricted portion 0440d. Since the constricted portion 0440d is narrower than other portions, it tends to drop toward the constricted portion 0440d side, and a slope inclined toward the constricted portion side is likely to occur. As a result, the slope provides a rotational force that supports rolling over, making it easier to roll over.

Then, according to the mattress according to the fourth embodiment, as shown in FIGS. A plurality of divided planar bodies 0440 are combined to form the shaped body, and the planar body for supporting the head is arranged in a region for supporting the head part and is composed of a single (one) divided planar body 0440, and Also, the planar body that is arranged in the region for supporting the legs and supports the legs is composed of a combination of single (one) divided planar bodies 0440, and the single divided planar bodies 0440 are all the same. are using. In this way, in the planar body arranged in the area for supporting the head and supporting the head and the planar body arranged in the area for supporting the legs and supporting the legs, a single (one) divided planar body 0440, the waist and buttocks B are arranged in the area supporting the waist and buttocks B, and a plurality of divided planar bodies 0440 are combined to form the waist and buttocks B. The area of the supporting planar body should be larger than the area of the planar body placed in the area supporting the head to support the head or the area of the planar body placed in the area supporting the legs and supporting the legs. ing. Accordingly, in the area corresponding to the waist and buttocks B, by arranging the planar body that supports the waist and buttocks B, which has a larger area than the planar body that supports the head and the planar body that supports the legs, By increasing the effect of supporting the waist and buttocks B as a relatively hard feeling and by increasing the load distribution, the spring coil layer, which receives a large load on the waist and buttocks B of the human body, can be effectively prevented from partially falling. On the other hand, the area of the head-supporting planar body and the leg-supporting planar body is made smaller than that of the planar body supporting the waist and buttocks B to provide a relatively soft feel.

In this way, according to the load applied to the mattress by the parts of the human body, the areas corresponding to the waist and buttocks B where the load is large are relatively increased, while the areas corresponding to the head and legs are made relatively large. By making the area of the body relatively small, it is possible to adjust the amount of sinking, balance appropriate fit and body pressure dispersion, and provide a sleeping posture with less burden on the body.
That is, in the region corresponding to the waist and buttocks B, by combining a plurality of divided planar bodies 0440 for supporting the head H and divided planar bodies 0440 for supporting the legs L to form a large area, the area is relatively hard. By increasing the effect of supporting the waist and buttocks B as a feeling and by increasing the load distribution, it is possible to prevent partial deep depression of the part where a large load is applied by the waist and buttocks B. - 特許庁On the other hand, the planar body supporting the head H and the planar body supporting the legs L have a smaller area than the planar body supporting the waist and buttocks B, so that they are relatively soft while preventing sagging. Ensures good feel and body pressure dispersion. The area of the planar body is increased in the region corresponding to the waist and buttocks B where the load is large, and the area of the planar body is increased in the region corresponding to the head H and the leg L where the load is less than the waist and buttocks B. By reducing , it is possible to adjust the amount of sinking and firmness, balance the body pressure dispersion and the amount of sinking due to appropriate fit, and provide a sleeping posture with less burden on the body.
However, when carrying out the present invention, it is also possible to obtain the same effect by changing the thickness, hardness, etc. of the planar body arranged at each part. In the above-described Embodiment 4, each planar body for supporting the legs and the head is explained as being composed of a single sheet, but when carrying out the present invention, a divided planar body divided into a plurality of It is good also as a structure of multiple sheets which combined the body.

Also, in the mattress according to the fourth embodiment, the planar body 0440 is accommodated in the cover. The cover is opened, and the position of the planar body 0440 accommodated in the cover is changed to a position corresponding to a specific part such as the user's waist, buttocks B, head H, and legs L according to the height and body shape of the user. can be placed in Further, since the planar body 0440 can be removed, wiped with water, dried, etc., the sanitary condition of the planar body 0440 can be maintained. In addition, even if the planar body 0440 is worn out due to long-term use, it can be replaced with a new one. Sheets with different properties such as thickness, hardness, elasticity (flexibility), etc. may be prepared and changed according to the user's preference and physical condition. good too.
In the case of carrying out the present invention, the planar body 0440 may be detachably fixed to the surrounding cushion layer, the outer material containing the spring coil layer, or the like using an adhesive or the like. good. This can prevent the planar body 0440 from being displaced.

Furthermore, according to the mattress according to the fourth embodiment, as shown in FIGS. It has a mark 0460 indicating the arrangement position. This makes it easy for the user to understand the layout of the planar body 0440, and facilitates rearrangement of the layout corresponding to the position, preference, height, etc. of the user lying on the mattress.
In addition, when carrying out the present invention, the mark 0460 indicating the arrangement of the planar member 0440 is not limited to those shown in FIGS. The mark 0460 is formed by printing, painting, stitching, etc. on the upper surface of the outer material (cover) that covers or wraps the spring coil layer. You can clearly indicate the position to be placed. As for the form of representation showing the arrangement, as shown in FIGS. etc. can be expressed. In particular, in FIGS. 4G, 4H, 4I, 4J, and 4K, the waist buttocks B, head H, and legs L of the human body with different body types, heights, etc., according to the height, body type, etc. of the human body and the size of the mattress. positions are grasped in advance, and marks 0460 are formed at corresponding positions to indicate the arrangement position of the planar body 0440 . More specifically, marks 0460 are formed on the upper surface of the outer material coated with the spring coil layer to indicate the arrangement of the planar body 0440 with respect to the positions of the waist buttocks B, head H, and legs L according to the user's height, body shape, etc. , the outline of the planar body 0440 is drawn (for example, printed on the upper surface of the outer material) while being finely shifted at intervals of 2 to 10 cm, for example, so that the layout of the planar body 0440 is shown to the user in an easy-to-understand manner. This makes it easy to arrange an appropriate position for producing the effect of the planar body 0440 according to the user's height and body type. In addition, it is symmetrical on the top and bottom in the length direction, and it can also be used for mattress rotation.

Thus, in the mattress of the fourth embodiment, the mark 0460 indicating the arrangement position of the planar body 0440 is formed on the upper surface side of the spring coil layer. can.
In addition, it is preferable that the split planar body 440 has a size that straddles at least four or more pocket coil springs in total, two in the longitudinal direction and two in the width direction of the mattress.

By the way, in the first to fifth embodiments, the spring coil layer having a plurality of pocket coil springs is partially arranged on the upper surface side, has elasticity, and specifies a human body lying on the upper surface side of the spring coil layer. It can also be regarded as an invention of a planar body that supports a part.

According to the planar body according to Embodiments 1 to 5, the planar body partially supports the waist and buttocks of the human body lying on the upper surface side of the spring coil layer with respect to the upper surface side of the spring coil layer. By arranging the body, the waist and buttocks are supported on the surface, so that the load of the spring coil layer related to the pocket coil springs can be distributed in the region supporting the waist and buttocks, and deep sinking of the spring coil layer can be suppressed.

That is, in the region of the spring coil layer on which the load of the human body is most heavily applied, that is, in the region corresponding to the waist and buttocks of the human body, an elastic planar body is partially arranged on the upper surface of the pocket coil spring, and the spring By supporting the lumbar and buttocks of the human body with an elastic planar body in addition to the coil layer, it is possible to prevent the lumbar and buttocks of the human body lying on the upper surface of the mattress from sinking greatly and bending the human body into a dogleg shape. Therefore, the loss of force in the downward direction when turning over is reduced, and the load can be elastically supported by the surface of the planar body. tossing and turning. Therefore, compared with the case of the spring coil layer alone, it is possible to roll over easily.
In this way, by partially arranging the planar body on the upper surface side of the spring coil layer, that is, by partially supporting specific parts such as the buttocks and the waist of the human body, the waist and buttocks of the human body are prevented from sinking, and the body is strengthened. Since the difference in the amount of sinking that varies from part to part is reduced, and since the planar body serves as a fulcrum, it becomes easier to roll over. In addition, the sinking of the buttocks and waist of the human body is prevented, that is, the load applied to specific parts of the human body is reduced, and it becomes easier to turn over, which promotes blood flow and prevents muscle stiffness. , the burden on the back can be reduced. In addition, since blood flow can be promoted, muscle stiffness can be prevented, and excessive muscle strength is not required for rolling over, awakening of the brain and sound sleep are less likely to be disturbed.

Further, the planar body may be partially disposed on the upper surface side of the spring coil layer, that is, partially disposed at a position corresponding to a specific part in the length direction of the human body such as the waist and buttocks of the human body. For example, since the entire length of the human body is not supported by a planar body, the pocket coil spring of the spring coil layer in which the coil is independent impairs the shape of the human body, the fit to unevenness, and the body pressure dispersion. The function of the spring coil layer with the pocket coil springs makes it possible to give a comfortable feeling of being wrapped up in bed.

In other words, the spring coil layer moderately distributes the load of the body and effectively disperses the body pressure to maintain a comfortable sleeping posture, while the weighted parts of the body such as the waist and buttocks are provided with a planar body. It suppresses sinking and prevents the force from escaping when you toss and turn, supporting smooth tossing and turning. As a result, it is possible to improve the effect of providing good quality sleep, recovering from fatigue, and improving poor blood circulation.

In particular, by supporting the lumbar and buttocks of the human body lying on the upper surface of the mattress with a planar body, the sinking and sagging of the lumbar and buttocks is suppressed, and the human body is prevented from bending in a dogleg shape. The load can be concentrated and reduced, and unnatural curvature of the spine can be prevented, so that even a person with low back pain can have a comfortable sleeping posture. Furthermore, since the pocket coil spring fits along the S-shaped curve of the back of the human body, the pocket coil spring can fit the S-shaped curve of the back of the human body without providing a planar body especially on the shoulder or back side of the human body. Since it is easy to follow the curve, it is easy to maintain a gentle S-shaped line of the spine that is close to the upright state, that is, the curve of the spine, even in a supine sleeping posture, and a natural and comfortable sleeping posture is easily maintained. In addition, even in a sideways sleeping position, the pocket coil spring fits the shape of the back of the human body and the unevenness of the spine, making it difficult for the spine to bend into an unnatural shape. can be maintained. Although the waist and buttocks of a human body lying on the upper surface of the mattress are supported by the planar body, the shoulders of the human body lying sideways receive repulsion and pressure from the planar body by not arranging the planar body on the shoulders of the human body. Instead, the pocket coil spring fits the shape and unevenness of the back of the human body, making it difficult to bend the spine and making it easy to form a sleeping posture that stretches the spine.
Therefore, a comfortable sleeping posture can be obtained not only for people with low back pain but also for those who do not. That is, it is possible to provide a sleeping posture with less load on the human body.

[Embodiment 5]
Embodiment 5 is characterized in that the mattress according to the present invention is used in a sofa.

That is, as shown in the perspective view of FIG. 5, a sofa 0500 using the mattress of this embodiment includes a mattress 0510 as a seat on which a person sits or lies, and a backrest rising from one side edge of the mattress 0510. It has a portion 0501 and legs 0502 which are placed under the mattress 0501 and support the mattress 0501 substantially horizontally at an appropriate height.

In the sofa according to the fifth embodiment, sinking is suppressed to a lesser extent, so there is an effect that comfortable sitting comfort and sleeping comfort can be obtained.
In addition, in both the bed and the sofa, sinking is suppressed by the arrangement of the planar body, so that it becomes possible to get up and stand up easily.

[Embodiment 6]
Embodiment 6 relates to a planar body set to be placed on the upper side of a mattress. The main features of the planar body set of the present embodiment are the areas of the uppermost surface of the mattress on which the body is placed (for example, the area where the head is placed, the area where the back is placed, the area where the buttocks are placed, the area where the legs are placed, and the heels. A plurality of planar bodies are provided in order to vary the amount of weight load per unit area according to the area on which it is placed. The point is that it is composed of a plurality of planar bodies. As a result, for example, in the region that supports the waist and buttocks, which receives a large surface pressing force from a person sleeping on the mattress in a supine position, the weight load per unit area of the mattress in this region is reduced. In the back and legs where the pressing force is small, the burden of weight per unit area is left as it is, and as a result, the sleeping comfort can be improved as a whole.

In Embodiment 6, the mattress topper 0650 with the planar body set is used by placing it on the mattress 0610, as shown in FIG. A quilting layer (planar body) 0651 large enough to cover the upper surface of the mattress 0610, a planar body (planar body) 0640 made of a plastic plate having a thickness of, for example, about 10 to 15 mm, and the upper surface of the mattress 0610. It has a support layer base layer 0652 (planar body) made of a low-resilience material such as low-resilience urethane or a high-resilience material such as a high-resilience sheet, which is large enough to cover.
A mattress topper 0650 having this set of planar bodies consists of a planar body 0640 made of a plurality of plastic plates and a quilting layer 0651 functioning as an elastic planar body different from the planar body 0640 and a support from the plastic plates. It is sandwiched between layer base layers 0652 . In FIG. 6B as well, the space between the quilting layer 0651 and the support layer base layer 0652 other than the planar body 0640 made of a plastic plate is shown, but the presence of the planar body 0640 also made of a plastic plate is shown as a space. In fact, the space around the planar body 0640 made of a plastic plate is filled with the quilting layer 0651 and the support layer base layer 0652 and does not exist.

A plastic plate 0640 as a planar body has a shape in which regular hexagons of the same size are joined with one piece of each. At this time, the length of one side of one regular hexagon is 130 mm, therefore, the longest distance between the vertices of one regular hexagon is 260 mm, and the distance between the mutually opposing sides of two regular hexagons is about 450 mm. ing. The plastic used for the plastic plate 0640 is not particularly limited as long as it has elasticity (flexibility) such as rubber elasticity, in other words, flexibility, toughness, cushioning properties, and the like. , Shock absorption, resilience, durability, moisture resistance, antibacterial properties, heat insulation and heat retention are preferable, such as polyethylene (PE) foam, polypropylene (PP) foam, EVA (ethylene vinyl acetate copolymer) foam, etc. The polyolefin foam (polyolefin resin foam), urethane foam, or continuous filaments made of resin meander irregularly and intertwine, and are adhered everywhere in the meandering state, and the space between the continuous filaments is A three-dimensional network structure or the like having a predetermined thickness continuously, that is, continuous filaments intertwined three-dimensionally and having continuous voids can be used. Preferably, the impact resilience is 15% or more and 90% or less, more preferably 20% or more and 85% or less, according to JIS K 6400-3. In particular, it has light weight, shock absorption, resilience, durability, moisture resistance, antibacterial properties, heat insulation and heat retention, excellent flexibility, weather resistance and workability, and is non-toxic, odorless, and non-polluting. It is preferable to adopt environmentally friendly IXPE (Electron Emission Crosslinked Polyethylene Foam) which has

In Embodiment 6, three divided planar bodies 0640 are placed on the support layer base layer 0652 in the region Wb that supports the waist and buttocks that receive a large surface pressing force. One piece each is placed on the support layer base layer 0652 in the regions Wh and W1 that support the head and leg portions that receive a large surface pressing force. In the present embodiment, rearrangement including positional adjustment of the planar member 0640 on the support layer base layer 0652 is appropriately enabled. Note that the virtual lines in FIG. 6A are boundary lines that roughly divide the regions Wb, Wh, and W1.

In the sixth embodiment, the mattress topper 0650 having the planar body set is arranged on the mattress currently in use, for example, the pocket coil mattress 0610, and the region Wb supporting the waist and buttocks receiving a large surface pressing force and the Since the plastic plate 0640, which is a highly elastic planar body, is arranged on each support layer base layer 0652 of the regions Wh and W1 that support the head and legs, the waist and buttocks, the head and legs, and so on. In the areas Wb, Wh, W1 receiving a large surface pressing force from the legs, the weight load per unit coil spring of the plurality of adjacent coil springs forming these areas Wb, Wh, W1 is small. Therefore, since a plurality of adjacent coil springs receives a small surface pressing force shared by them, the amount of depression of each of the plurality of coil springs constituting these regions Wb, Wh, and W1 is the same as that of the waist, buttocks, head, and legs. It is smaller than each sinking amount of the coil spring that receives a small surface pressing force from other parts.

More specifically, in the area Wb that receives a large surface pressing force from the waist and buttocks, as shown in the schematic diagram of FIG. In the region Wh, which cooperates to receive the surface pressing force and receives a large surface pressing force from the head H, as shown in the schematic diagram of FIG. In the region W1, which receives a surface pressing force from the legs L and receives a large surface pressing force from the legs L, one plastic plate 0640 is pressed from the legs L as shown in the schematic diagram of FIG. Since the regions Wb, Wh, and W1 receive pressure, the weight load per unit coil spring of the plurality of adjacent coil springs forming these regions Wb, Wh, and W1 is reduced.

The plastic plate 0640, which is a planar body with high elasticity, is not limited to a shape in which regular hexagons of the same size are joined together at one side. A triangular plastic plate 0660 or, as shown in FIG. 6G, a square plastic plate 0670 can be appropriately employed. Positional deviation can be prevented.

That is, since the plastic plate 0640, which is a planar body, has a polygonal shape, it is possible to increase the planar filling rate and prevent positional deviation.
In particular, if the planar plastic plate 0640 is in the shape of an equilateral triangle, square, or regular hexagon, or in the shape of a polygon formed by connecting at least one side of regular hexagons, the planar objects are adjacent to each other without gaps. Positional shift can be effectively prevented by being able to lay down and spread, and dead space is not generated, so that the support effect is high even if the human body moves. Furthermore, among them, a regular hexagonal shape or a polygonal shape obtained by connecting at least one side of regular hexagons has better force dispersion and can further suppress the sinking of the human body, and furthermore, it can be used for a long time. It becomes more difficult to deform with use.

Further, as described in the fourth embodiment, in the case where the planar plastic plate 0640 has a polygonal shape formed by connecting at least one side of regular hexagons, the lateral width is partially divided at the central portion in the length direction. , forming a constricted portion. As a result, when the narrow width of the constricted portion corresponds to the lengthwise direction of the mattress, the force exerted by the constricted portion when the human body turns over (rotates) while straddling the constricted portion is applied to the constricted portion. When it is added, it becomes easy to fall toward the constricted portion side, so that a slope inclined toward the constricted portion side can be generated. As a result, it is possible to obtain the effect of giving a rotational force that supports rolling over and making it easier to roll over.

Further, in the planar body set 0650 according to the sixth embodiment, a plurality of plastic plates 0640 having the same shape and size are provided, and three plastic plates are provided in the region Wb for supporting the waist and buttocks that receive a large surface pressing force. 0640 is arranged, instead of the three plastic plates 0640, a plastic plate having an area equivalent to the combined area of the three plastic plates 0640 may be arranged.

With the planar body set according to Embodiment 6, as with Embodiments 1 to 5, a comfortable feeling of being wrapped up in sleep can be obtained, and it is possible to easily turn over. A great advantage is that it is possible to change the absorption capacity of each of a plurality of adjacent coil springs in pocket coil mattresses currently in use without modifying the coil springs.

That is, the mattress topper 0650 according to the sixth embodiment is a mattress topper laid on the upper surface of the mattress 0610 in which a spring coil layer having a plurality of pocket coil springs as core materials is provided, and has a cushioning base. The layer 0652 is partially disposed on the upper surface of the base layer 0652, has elasticity, and supports specific parts such as the waist and buttocks B, the head H, and the legs L of the human body lying on the upper surface of the mattress topper 0650. and a planar body 0640 .

According to the mattress topper 0650 according to the sixth embodiment, by laying it on the upper surface of the mattress 0610 in which the spring coil layer is provided, it is partially arranged on the upper surface of the base layer 0652 and lies on the upper surface of the mattress topper 0650. Since the elastic planar body 0640 corresponding to the waist and buttocks B of the human body receives the waist and buttocks B of the human body lying on the upper surface of the mattress topper 0650, the spring coils of the mattress 0610 are provided in the region Wb supporting the waist and buttocks B. The load associated with the pocket coil springs of the layer is distributed, and deep subduction of the spring coil layer is suppressed.

That is, a mattress topper 0650 in which a sheet-like body 0640 having elasticity and supporting the waist and buttocks B of the human body is partially arranged on the upper surface of the base layer 0652 is laid on the upper surface of the mattress 0610 in which the spring coil layer is provided. By doing so, the planar body 0640 of the mattress topper 0650 is arranged in the area where the load of the human body is applied most to the upper surface side of the spring coil layer of the mattress 0610, that is, in the area Wb corresponding to the waist and buttocks B of the human body. As a result, the waist and buttocks B of the human body are supported not only by the spring coil layer but also by the elastic planar body 0640, so that the waist and buttocks B of the human body lying on the upper surface of the mattress topper 0650 sink greatly and the human body becomes doglegged. Bending is prevented. Therefore, the loss of force in the downward direction at the time of rolling over is reduced, and the load can be elastically supported by the surface of the planar body 0640, so that a small amount of rotational force and muscle force can be applied without applying excessive force. You will be able to roll over smoothly. Therefore, as compared with the case of using only the spring coil layer, it is possible to roll over easily.
In this way, by partially arranging the planar body 0640 on the upper surface side of the spring coil layer, that is, by supporting specific parts such as the buttocks and waist of the human body, the waist and buttocks of the human body are prevented from sinking, and each part of the body is supported. Since the difference between the different amounts of sinking is reduced, and the planar body 0640 serves as a fulcrum, it becomes easy to roll over. In addition, the sinking of the buttocks and waist of the human body is prevented, that is, the load applied to specific parts of the human body is reduced, and it becomes easier to turn over, which promotes blood flow and prevents muscle stiffness. , the burden on the back can be reduced. In addition, since blood flow can be promoted, muscle stiffness can be prevented, and excessive muscle strength is not required for rolling over, awakening of the brain and sound sleep are less likely to be disturbed.

In addition, the arrangement of the planar body 0640 in the mattress topper 0650 is partially arranged, that is, the positions corresponding to specific parts in the length direction of the human body such as the waist and buttocks B, the head H, and the legs L of the human body. Since the planar body 0640 does not receive the entire length of the human body, the pocket coil spring of the spring coil layer in which the coil is independent fits the shape of the human body, the unevenness, and the like. It does not impair the body pressure dispersibility, and when laid on the upper surface of the mattress 0610, the function of the spring coil layer having the pocket coil springs can be exerted to provide a comfortable feeling of sleep. .

In other words, the spring coil layer appropriately disperses the load of the body to effectively disperse the body pressure and maintain a comfortable sleeping posture, while the planar body 0640 is arranged in the body parts with weight such as the waist and buttocks. It suppresses sinking and prevents the force from escaping when tossing and turning, supporting smooth tossing and turning. As a result, it is possible to improve the effect of providing good quality sleep, recovering from fatigue, and improving poor blood circulation.

In particular, according to the mattress topper 0650 laid on the upper surface of the mattress 0610 in which the spring coil layer is provided, the lower back and buttocks B of the human body lying on the upper surface are supported by the planar body 0640, so that the lower back and buttocks B of the human body sink. Since it can prevent the human body from bending into a dogleg shape by suppressing depression and depression, it can reduce the concentration and load of the load on the neck and waist, making it a comfortable sleeping posture even for people with back pain. Curvature can be prevented. Furthermore, since the pocket coil spring fits along the S-shaped curve of the back of the human body, especially since the planar body 0640 is not provided on the shoulders and the back of the human body, the pocket coil spring can fit the back of the human body. Because the S-shaped curve of the body can be easily followed, the S-shaped line of the spine, that is, the curve of the spine, which is close to the upright state, can be easily maintained even in a supine sleeping posture, and a natural and comfortable sleeping posture can be easily maintained. In addition, even in a sideways sleeping position, the pocket coil spring fits the shape of the back of the human body and the unevenness of the spine, making it difficult for the spine to bend into an unnatural shape. can be maintained. Also in the sixth embodiment, the lumbar buttocks B, head H, and legs L of the human body lying on the upper surface of the mattress topper 0650 laid on the upper surface of the mattress 0610 having the spring coil layer embedded therein are covered with the planar body 0640. Since the planar body 0640 is not provided on the shoulders of the human body, the shoulders of the human body lying on its side are not repelled or pressed by the planar body 0640, and the pocket coil spring supports the back of the human body. The shape and fit to the unevenness make it difficult for the spine to bend, and it is easy to form a sleeping posture in which the spine is stretched.
Therefore, a comfortable sleeping posture can be obtained not only for people with low back pain but also for those who do not. That is, it is possible to provide a sleeping posture that places less burden on the human body.

According to the mattress topper 0650 according to the sixth embodiment, as shown in FIG. 6A, the planar bodies 0640 supporting the waist and buttocks B of the human body lying on the upper surface of the mattress topper 0650 are regular six-pieces of the same size. It is composed of a combination of a plurality of divided planar members 0640 each made of a plastic plate having a shape in which each square portion is joined by one piece. Therefore, by recombining the number of divided planar bodies 0640 and recombining their arrangement, the human body can be adjusted according to the user's body type, preference, physical condition, weight, etc., and also according to the size of the mattress 0610 and the mattress topper 0650. It is possible to change the size and arrangement position of the planar body that supports the waist and buttocks B of the body, and increase the variation of shapes that can be expressed. That is, according to the user's body shape, preference, body condition, weight, etc., the number and arrangement of the divided planar members 0640 can be changed to allow customization that enables a comfortable sleeping posture for the user. . In addition, in the case of combining a plurality of divided planar bodies 0640, the number of divided planar bodies 0640 of the mattress topper 0650 corresponding to the size of the mattress 0610 such as a single mattress, a semi-double mattress, and a double mattress can be changed. Since the size of the planar body 0640 that supports the waist and buttocks B of the human body can be changed, it is not necessary to prepare the planar body 0640 with various areas, so that the manufacturing cost can be reduced. Then, the number of sheets 0640 of the planar body 0640 varies depending on the size of the mattress 0610 on hand, such as for a single mattress, for a semi-double mattress, and for a double mattress, and according to the characteristics of the spring coil layer of the mattress 0610 on hand. That is, by changing the area and size of the planar body that supports the waist and buttocks B of the human body, it is possible to adjust the amount of sinking. Regardless of the size and the characteristics of the spring coil layer, it is easy to turn over and the body pressure dispersibility is good, so that the user can form a comfortable sleeping posture.

As in the case of the fourth embodiment, the size of the planar body 0640 made of a plastic plate is, for example, about 100 mm to 600 mm in maximum length, preferably about 300 mm to 500 mm. With regard to the size of the divided planar body 0640, the number of divided planar bodies 0640 arranged in parallel in the width direction of the mattress 0610 in the region supporting the waist and buttocks B of the human body is, for example, 70 to 90 cm in width. A so-called small single mattress with a width of about 95 to 100 cm has 2 to 4 sheets, and a so-called semi-double mattress with a width of about 110 to 125 cm has 2 to 5 sheets. 3 to 6 sheets for a so-called double mattress with a width of about 140 cm to 145 cm, and about 4 to 8 sheets for a so-called wide double mattress, queen mattress, or king mattress with a width of 150 cm or more. The length of the mattress is, for example, about 180 cm to 210 cm.

That is, in the mattress topper 0650 according to the sixth embodiment, the planar body supporting the waist and buttocks B of the human body lying on the mattress 0610 has a divided structure, and is formed by combining a plurality of divided planar bodies 0640. It is.
Therefore, depending on the size of the mattress 0610 or the mattress topper 0650 to be used, the characteristics of the spring coil layer, the user's height, body shape, preference, physical condition, etc., the area and shape for supporting the waist and buttocks B of the human body are determined. You can change the size and position. By being able to change the area and arrangement position of the planar body 0640 in this way, it is possible to pursue a comfortable sleeping comfort and sleeping posture for the user.

In particular, in the mattress topper 0650 according to Embodiment 6, as shown in FIG. 6A, the divided planar body 0640 that supports the waist and buttocks B of the human body extends along the length of the mattress 0610 and the mattress topper 0650. A plurality of sheets are arranged side by side in the width direction perpendicular to the length direction of the mattress 0610 and the mattress topper 0650 so as to correspond to the length direction. That is, in the width direction of the mattress 0610 or the mattress topper 0650 in the region Wb supporting the waist and buttocks B of the human body, the seams (borders) in the longitudinal direction (the length direction of the mattress) between the divided planar bodies 0640 adjacent to each other in parallel. will exist. Therefore, in the width direction of the mattress 0610 and the mattress topper 0650 in the region Wb supporting the waist and buttocks B of the human body, there is a longitudinal joint between the divided planar bodies 0640, and the joint portion is the edge of the divided planar bodies 0640. The force when the human body turns over (rotates) while straddling the joint portion is applied to the edge portion of the joint between the divided planar members 0640. If this is applied, the edge side of the seam is more likely to drop than the central side of the divided planar body 0440, and a gradient that inclines from the central side to the edge side of the seam is likely to occur. As a result, the gradient provides a rotational force that supports the user's rolling over, thereby making it easier to roll over.
However, when carrying out the present invention, it is not always necessary to make the longitudinal direction of the divided planar body correspond to the longitudinal direction of the mattress 0610 depending on the preference of the user.

Furthermore, according to the mattress topper 0650 according to Embodiment 6, as shown in FIGS. A region Wh that supports H is also partially provided with an elastic planar body 0640 . Therefore, since the head H is supported by the elastic planar body 0640, the load associated with the coil springs of the spring coil layer is dispersed even in the region Wh supporting the head H, and the spring coil layer does not sink deeply. Suppressed. Therefore, the head of the human body is prevented from sagging, that is, the body, particularly the neck, is prevented from being placed in an unnatural posture, and the head H is stably supported by the planar body 0640. It can provide a comfortable sleeping posture.

In addition, according to the mattress topper 0650 according to Embodiment 6, as shown in FIGS. An elastic planar member 0640 is also partially provided in the region supporting the portion L. FIG. Therefore, since the elastic planar member 0640 receives the leg L with its surface, the load applied to the spring coil layer is dispersed even in the region Wl supporting the leg L, and the deep sinking of the spring coil layer is suppressed. . Therefore, the legs L of the human body are prevented from sagging, that is, the body, especially the legs and the waist, are prevented from being placed in an unnatural posture. A comfortable sleeping posture can be provided by stable support. Supporting the leg L is also effective in relieving swelling of the leg.

Here, according to the mattress topper 0650 according to the sixth embodiment, as shown in FIG. The planar body 0640 has a polygonal shape in which the sides of two regular hexagons are joined to each other. It is a shape in which a constricted portion is formed by shortening the That is, one planar body 0640 that supports the head H and legs L of the human body has a polygonal shape formed by joining the sides of two regular hexagons, and the central part in the longitudinal direction is partially folded. It is a shape in which a constricted portion with a reduced width is formed. The planar bodies 0640 that support the head H and the legs L of the human body are arranged so that their length directions correspond to the width directions of the mattress 0610 and the mattress topper 0650, respectively, and the narrow width direction of the constricted portion is The arrangement corresponds to the lengthwise direction of the mattress 0610 and mattress topper 0650 . As a result, in the areas Wh and Wl that support the head H and legs L of the human body, the force applied to the constricted parts when the human body turns over (rotates) while straddling the constricted parts of the planar body 0640 is applied to the constricted parts. If this is applied, the width of the constricted portion is narrower than that of the other parts, so that it tends to drop toward the constricted portion side, and a slope that inclines toward the constricted portion side is likely to occur. As a result, the slope provides a rotational force that supports the user's rolling over, thereby providing the effect of smooth rolling over.

According to the mattress topper 0650 according to the sixth embodiment, as shown in FIG. 0640, and the planar body for supporting the head H is arranged in the area Wh for supporting the head H. The planar body arranged in the region W1 to support the legs L is also composed of a combination of a single divided planar body 0640, and the single divided planar bodies 0640 are all the same. ing. Thus, in the planar body arranged in the region Wb for supporting the head H and supporting the head H and the planar body arranged in the region Wl supporting the leg L and supporting the leg L, a single unit (one sheet ), a plurality of divided planar bodies 640 are combined in the planar body arranged in the region Wb for supporting the waist and buttocks B and supporting the waist and buttocks B. As a result, the area of the planar body supporting the waist and buttocks B is arranged in the region Wh for supporting the head H and the planar body supporting the head H and the leg L are arranged in the region Wl for supporting the leg. It is made larger than the area of the planar body that supports L. As a result, in the area Wb corresponding to the waist and buttocks B, the planar body supporting the waist and buttocks B having a larger area than the planar body supporting the head H and the planar body supporting the legs L is arranged. By providing a relatively stiff feeling, the effect of supporting the waist and buttocks B is increased, and by increasing the load distribution, partial collapse of the spring coil layer, which receives a large load on the waist and buttocks B of the human body, can be prevented. While it can be effectively prevented, the planar body supporting the head H and the planar body supporting the leg L have a smaller area than the planar body supporting the waist and buttocks B, and are relatively soft. Feel it.

In this way, according to the load applied to the mattress 0610 by the parts of the human body, the areas corresponding to the waist and buttocks B where the load is large are made relatively large, while the areas corresponding to the head and legs are made flat. By making the area of the shaped body relatively small, it is possible to adjust the amount of sinking, balance appropriate fit and body pressure dispersion, and provide a sleeping posture with less burden on the body.
That is, in the region Wb corresponding to the waist and buttocks B, a plurality of divided planar bodies 640 for supporting the head H and divided planar bodies 640 for supporting the legs L are combined to form a large area, thereby making the region relatively stiff. By increasing the effect of supporting the waist and buttocks B as a feeling of the weight and by increasing the load distribution, it is possible to prevent partial deep depression of the part where a large load is applied by the waist and buttocks B. On the other hand, the planar body supporting the head H and the planar body supporting the legs L have a smaller area than the planar body supporting the waist and buttocks B, so that they are relatively soft while preventing sagging. Ensures good feel and body pressure dispersion. In the region Wb corresponding to the waist and buttocks B to which a large load is applied, the area of the planar body is increased, and in the region Wh corresponding to the head H and the region Wl corresponding to the legs L, to which the load is less than the waist and buttocks B By reducing the area of the body, it is possible to adjust the amount of sinking and the hardness, and balance the body pressure dispersibility and the amount of sinking due to an appropriate fit to provide a sleeping posture with less burden on the body.
However, when carrying out the present invention, it is also possible to obtain the same effect by changing the thickness, hardness, etc. of the planar body arranged at each part.

Further, since the planar body 0640 of the mattress topper 0650 according to Embodiment 6 is also made of a resin foam, the mattress topper 0650 having the planar body 0640 has excellent cushioning properties and is lightweight. The amount of sinking of the coil springs of the mattress 610 due to laying can be reduced. Therefore, the elasticity and resilience of the coil spring are not impaired, and it is difficult to give a feeling of foreignness or discomfort. Furthermore, if it is a resin material, it can be easily molded into a desired shape at a low cost, and a smoothness that does not give a feeling of foreignness or discomfort can be obtained.
In particular, if it is made of a closed-cell material, it is possible to obtain appropriate cushioning properties and resilience, thereby increasing the support power for rolling over. Furthermore, since it is non-absorbent, the propagation of fungi due to permeation of perspiration or the like is suppressed, making it easy to maintain hygiene.
In addition, cross-linked resins (cross-linked polyethylene, etc.) obtained by electron beam cross-linking have a soft surface, so that they feel good on the skin and are less likely to cause a feeling of foreignness or discomfort. In addition, it is possible to obtain the effect of suppressing sagging by supporting a specific part of the human body, as well as improving fit and body pressure dispersion.

The mattress topper 0650 according to the sixth embodiment is laid on the upper surface side of the base layer 0652 via the planar body 0640, that is, on the upper surface side of the base layer 0652 and on the upper surface side of the planar body 0640. A quilting layer 0640 is provided as a seat pad. Therefore, the base layer 0652 and the quilting layer 0640 as a seat pad laid on the upper surface side of the planar body 0640 allow the user lying on the upper surface of the mattress topper 0650 to feel the edges and corners of the planar body 0640. It is difficult. The quilting layer 0640 as a seat pad is, for example, a quilting process in which solid cotton or profile urethane is inserted between the front and back fabrics (outer material) and machine-sewn (stabbing) to enhance the cushioning properties.

Also, in the mattress topper 0650 according to the sixth embodiment, the cover that wraps the whole including the base layer 0652 and the planar body 0640 can be opened and closed by a fastener, and the cover can be opened to open the planar body contained in the cover. The position of the body 0640 can be arranged at positions corresponding to specific parts such as the waist and buttocks B, the head H, and the legs L of the user according to the user's height and body shape. Further, since the planar body 0640 can be removed, wiped with water, dried, etc., the sanitary condition of the planar body 0640 can be maintained. In addition, even if the planar body 0640 is worn out due to long-term use, it can be replaced with a new one. A cover that encloses the base layer 0652 and the planar body 0640 can also be formed integrally with the quilting layer 0640, for example.

Thus, the mattress topper 0650 according to Embodiment 6 further includes an openable and closable cover that encloses the base layer 0652 and the planar body 0640, and the planar body 0640 changes its arrangement on the upper surface side of the base layer 0652. It is free.
Therefore, since it can be arranged at a desired specific part according to the height and body type of the user, the load can be reduced regardless of the height and body type of the user.

Furthermore, the mattress topper 0650 according to the sixth embodiment has air permeability by, for example, forming through-holes in the planar body 0640, as in the first to fifth embodiments. It prevents the human body from getting stuffy and makes it possible to sleep comfortably. Further, by providing the through-holes, the flexibility, softness, etc. of the planar body 0640 can be improved, and the fit and body pressure dispersion can be enhanced. In other words, by being excellent in flexibility, the fitting property is good, and while obtaining the effect of supporting a specific part of the human body and suppressing sagging, the fitting property and the body pressure dispersion property can be improved.
In the case of carrying out the present invention, the flexibility and softness of the planar body 0640 may be improved by forming recessed grooves, and the fit and body pressure dispersion may be enhanced.

Further, in the same manner as in the fourth embodiment, in the sixth embodiment, for example, as shown in FIGS. A member for grasping the positions of the buttocks B, the head H, and the legs L in advance and arranging a mark indicating the arrangement position of the planar body 0640 at the corresponding position on the upper surface side or the lower surface side of the planar body 0640. , so that the user can easily understand the arrangement position of the planar body 0640 with respect to the positions of the waist and buttocks B, the head H, and the legs L according to the user's height, body shape, and the like. By having a mark indicating the arrangement position of the planar body 0640, it is easy for the user to arrange an appropriate position for producing the effect of the planar body 064 according to the user's height, body type, and the like.
Note that the formation of the mark can clearly indicate the position where the planar body 0640 is to be arranged, for example, by printing, painting, or stitching on the upper surface of the cover or the like that envelops the base layer 0652 .

By the way, the inventors of the present invention have proposed the structure of the mattress of the present invention, for example, in the fourth embodiment, a spring coil layer having a plurality of pocket coil springs, and an elastic (flexible) planar shape on the upper surface side of the spring coil layer. It has been confirmed that the number of times of tossing and turning can be reduced by using a mattress that partially disposes the body and supports the waist, buttocks, head and legs of a human body lying on the upper surface of the mattress by a planar body. This is presumably because, as described above, the sinking of the body and concentration of the load on specific parts are reduced, the load on the body is reduced, and a comfortable sleeping posture and sleeping position are stably maintained. Therefore, it is possible to improve the quality of sleep.

In the above-described embodiment, an example in which the planar body is partially arranged on the spring coil layer having the pocket coil springs has been described. For example, urethane such as medium-resilience urethane foam with a rebound resilience of 15% or more and less than 50% according to JIS K 6400-3, or low-resilience urethane foam with a resilience of less than 15% (JIS K 6401) A base mat layer of foam may be used as the core of the mattress.

That is, a base mat layer made of urethane foam, and a surface partially disposed on the upper surface side of the base mat layer, having elasticity, and supporting specific parts such as the waist and buttocks of the human body lying on the upper surface side of the base mat layer. It may be a mattress comprising a body.
Further, a planar body partially arranged on the upper surface side of the base mat layer made of urethane foam, having elasticity, and supporting specific parts such as the waist and buttocks of a human body lying on the upper surface side of the base mat layer made of urethane foam. may be

In the mattress and the sheet-like body, the elastic sheet-like body is partially arranged in the area supporting the waist and buttocks of the human body lying on the upper surface of the mattress on the upper surface side of the base mat layer made of urethane foam. Since the waist and buttocks are supported by the elastic planar body, the load applied to the base mat layer made of urethane foam is dispersed in the area supporting the waist and buttocks, and the base mat layer made of urethane foam sinks deeply. Suppressed.

That is, in the region of the base mat layer made of urethane foam on which the load of the human body is most heavily applied, that is, in the region corresponding to the waist and buttocks of the human body, an elastic planar body is partially arranged on the upper surface of the region, and the urethane foam is formed. Since the lumbar and buttocks of the human body are supported not only by the base mat layer made of foam but also by the elastic planar body, the lumbar and buttocks of the human body lying on the upper surface of the mattress are prevented from sinking greatly and bending into a dogleg shape. be done. Therefore, the loss of force in the downward direction when turning over is reduced, and the load can be elastically supported by the surface of the planar body. You will be able to turn over. Therefore, compared with the case where the base mat layer made of urethane foam is used alone, the user can turn over easily.
In this way, by partially disposing the planar body on the upper surface side of the mattress made of urethane foam, that is, by supporting specific parts such as the buttocks and waist of the human body, the waist and buttocks of the human body are prevented from sinking, and the parts of the body are supported. Since the difference in the amount of sinking that differs from one to another is reduced, and since the planar body serves as a fulcrum, it becomes easier to roll over. In addition, the sinking of the buttocks and waist of the human body is prevented, that is, the load applied to specific parts of the human body is reduced, and it becomes easier to turn over, which promotes blood flow and prevents muscle stiffness. , the burden on the back can be reduced. In addition, blood flow can be promoted, muscle stiffness can be prevented, and excessive muscle strength is not required for rolling over, so that awakening of the brain and sound sleep are less likely to be disturbed.

The planar body is partially disposed on the upper surface side of the base mat layer, that is, disposed at positions corresponding to specific parts in the length direction of the human body such as the waist and buttocks of the human body, and the length of the human body. Since the entire direction is not supported by a planar body, the function of the base mat layer made of urethane foam does not impair the shape of the human body, the fit to unevenness, and the body pressure distribution of the base mat layer made of urethane foam. Therefore, it is possible to obtain a comfortable feeling of being wrapped up.

In other words, the base mat layer made of urethane foam moderately distributes the load of the body and effectively disperses the body pressure to maintain a comfortable sleeping posture, while the weighted parts such as the waist and buttocks of the body have a planar body. Sinking is suppressed by the arrangement of , and the force at the time of tossing and turning is prevented from escaping, supporting smooth tossing and turning. As a result, it is possible to improve the effect of providing good quality sleep, recovering from fatigue, and improving poor blood circulation.

In particular, by supporting the lumbar and buttocks of the human body lying on the upper surface of the mattress with a planar body, the sinking and sagging of the lumbar and buttocks is suppressed, and the human body is prevented from bending in a dogleg shape. The load can be concentrated and reduced, and unnatural curvature of the spine can be prevented, so that even a person with low back pain can have a comfortable sleeping posture. Furthermore, since the base mat layer made of urethane foam fits along the S-shaped curve of the back of the human body, in particular, the base mat made of urethane foam does not arrange the planar body on the shoulder or back side of the human body. The layers easily follow the S-shaped curve of the back of the human body, and even in a supine sleeping position, the gentle S-shaped line of the spine, that is, the curve of the spine, which is close to the upright state, can be easily maintained, resulting in a natural and comfortable sleeping posture. is easily maintained. In addition, by not arranging a planar body on the shoulder or back side of the human body, even in a sideways sleeping position, the back shape of the human body due to the base mat layer made of urethane foam and the fit to the unevenness of the human body, the shape of the spine is unnatural. Since it is difficult to bend and the spine is easy to straighten, it is possible to maintain a sleeping posture that places less burden on the human body. At this time, the waist and buttocks of the human body lying on the upper surface of the mattress are supported by the planar body, but the shoulders of the human body are not provided with the planar body, so that the shoulders of the human body lying sideways are repelled and compressed by the planar body. The base mat layer made of urethane foam conforms to the shape and irregularities of the back of the human body, making it difficult for the spine to bend, making it easy to form a sleeping posture that stretches the spine.
Therefore, a comfortable sleeping posture can be obtained not only for people with low back pain but also for those who do not. That is, it is possible to provide a sleeping posture that places less burden on the human body.

Furthermore, when carrying out the present invention, a mattress topper laid on the upper surface side of a mattress made of urethane foam, comprising a base layer having cushioning properties, and a base layer partially disposed on the upper surface side of the base layer and having an elastic and a planar body that supports specific parts of a human body such as the waist and buttocks lying on the upper surface of the mattress topper.

According to the mattress topper, by laying it on the upper surface of the mattress made of urethane foam, it is partially arranged on the upper surface of the base layer and corresponds to the waist and buttocks of the human body lying on the upper surface of the mattress topper. Since the lumbar and buttocks of the human body lying on the upper surface of the mattress topper are received by the body, the load on the urethane foam mattress is dispersed in the area supporting the lumbar and buttocks, and the deep sinking of the urethane foam mattress is suppressed. be.

That is, by laying a mattress topper in which a sheet-shaped body having elasticity and supporting the waist and buttocks of the human body is partially arranged on the upper surface of the base layer, the mattress is made of urethane foam by laying it on the upper surface of the mattress made of urethane foam. In the area where the load of the human body is most heavily applied to the upper surface of the mattress, that is, in the area corresponding to the waist and buttocks of the human body, the planar body of the mattress topper is arranged to have elasticity in addition to the elasticity of the mattress made of urethane foam. Since the lumbar and buttocks of the human body are also supported by the planar body, the lumbar and buttocks of the human body lying on the upper surface of the mattress topper are prevented from sinking greatly and bending the human body into a dogleg shape. Therefore, the loss of force in the downward direction when turning over is reduced, and the load can be elastically supported by the surface of the planar body. You will be able to turn over. Therefore, compared with the case of using only a mattress made of urethane foam, it is easier to turn over.
In this way, by partially disposing the planar body on the upper surface side of the mattress made of urethane foam, that is, by supporting specific parts such as the buttocks and waist of the human body, the waist and buttocks of the human body are prevented from sinking, and the parts of the body are supported. Since the difference in the amount of sinking that differs from one to another is reduced, and since the planar body serves as a fulcrum, it becomes easier to roll over. In addition, the sinking of the buttocks and waist of the human body is prevented, that is, the load applied to specific parts of the human body is reduced, and it becomes easier to turn over, which promotes blood flow and prevents muscle stiffness. , the burden on the back can be reduced. In addition, since blood flow can be promoted and muscle stiffness can be prevented, and excessive muscle strength is not required for rolling over, it is difficult to disturb brain awakening and sound sleep.

In addition, the planar body in the mattress topper is partially disposed, that is, disposed at positions corresponding to specific parts in the length direction of the human body such as the waist, buttocks, head, and legs of the human body. It does not support the entire length of the human body with a planar body, so the urethane foam of the mattress does not impair the shape of the human body, the fit to unevenness, and the body pressure dispersion, and is laid on the top surface of the mattress. When the mattress is put on, the urethane foam function of the mattress can be exerted to provide a comfortable sleeping feeling that envelops the user.

In other words, the base mat layer made of urethane foam moderately distributes the load of the body, effectively disperses the body pressure, and maintains a comfortable sleeping posture. Sinking is suppressed by the arrangement of , and the force at the time of tossing and turning is prevented from escaping, supporting smooth tossing and turning. As a result, it is possible to improve the effect of providing good quality sleep, recovering from fatigue, and improving poor blood circulation.

In particular, according to the mattress topper laid on the upper surface of the mattress made of urethane foam, by supporting the lumbar and buttocks of the human body lying on the upper surface with a planar body, the sinking and depression of the lumbar and buttocks of the human body can be suppressed, and the human body can relax. Since it is possible to prevent the user from bending in the shape of the letter V, it is possible to reduce the concentration and load of the load on the neck and waist, and to prevent unnatural curvature of the spine, so that even a person with low back pain can have a comfortable sleeping posture. Furthermore, the urethane foam of the mattress fits along the S-shaped curve of the back of the human body. Since it is easy to follow the S-shaped curve, it is easy to maintain the S-shaped line of the spine, that is, the curve of the spine, which is close to the upright state, even in a supine sleeping posture, and a natural and comfortable sleeping posture can be easily maintained. In addition, even when sleeping on the side, the urethane foam of the mattress fits the shape of the back of the human body and the unevenness of the spine, making it difficult for the spine to bend into an unnatural shape. can be maintained. The lumbar, buttocks, head and legs of a human body lying on the upper surface of a mattress topper laid on the upper surface of a mattress made of urethane foam are supported by the planar body, but the shoulders of the human body are not provided with the planar body. Therefore, the shoulders of a person lying on their side are not repulsed or pressed by the planar body, and the pocket coil spring fits the shape and unevenness of the human back, making it difficult to bend the spine and allowing the spine to stretch. It is easy to form a sleeping posture.
Therefore, a comfortable sleeping posture can be obtained not only for people with low back pain but also for those who do not. That is, it is possible to provide a sleeping posture that places less burden on the human body.

By the way, in the above embodiment, at least part of the planar body is made of a plastic plate.
In addition, the arrangement of the planar bodies is configured so that the planes can be recombined, so that recombination is possible.
Further, the planar body may have a connecting portion with an adjacent planar body in the height direction and/or the lateral direction.
In addition, the planar body is polygonal in plan view. The polygon is preferably a shape obtained by combining a plurality of one or more of equilateral triangles, squares, and regular hexagons.

Moreover, in the above embodiment, the planar body is made of a resin foam.
As the resin foam, for example, polyolefin foam (polyolefin resin foam) such as polyethylene (PE) foam, polypropylene (PP) foam, EVA (ethylene vinyl acetate copolymer) foam, and polyurethane foam can be used. . Preferably, a closed-cell flexible foam is used, which can provide high cushioning properties.

The mattress of the above embodiment further comprises an openable and closable cover that encloses the spring coil layer and the planar body, and the planar body is changeable in arrangement on the upper surface side of the spring coil layer. That is, the spring coil layer and the planar body are housed in an openable and closable cover, and the arrangement of the planar body on the upper surface side of the spring coil layer can be freely changed. The arrangement of the planar body can be freely changed by grasping the planar body.
Note that the cover may be of any configuration that can be opened and closed so as to accommodate the planar body, move the position of the planar body, and take out or remove the planar body. It can be configured to be openable and closable by using a fastener such as.

Moreover, the mattress of the above embodiment further comprises a cushion layer laid on the upper surface side or the lower surface side of the planar body and on the upper surface side of the spring coil layer. That is, the cushion layer is laid on the upper surface side or the lower surface side of the planar body and on the upper surface side of the spring coil layer.
The cushion layer may have sufficient thickness and cushioning properties to prevent the user from feeling the edges and corners of the planar body. A cushioning material such as a three-dimensional network structure (fiber material) having continuous voids intertwined in a dimension can be used, and two or more kinds of cushioning materials may be used. It is preferable to use a cushioning material that has high body pressure dispersibility, profile processing such as profile urethane, a three-dimensional network structure, and a low-resilience material with a rebound resilience of less than 15% according to JIS K 6400-3. The cushion layer may be arranged on the upper surface side of the spring coil layer between the planar body and may be arranged on the upper surface side of the planar body.

The mattress in the above-described physical form further has a mark indicating the placement position of the planar body.
The mark may be provided on a member arranged on the lower surface side of the planar body, or may be arranged on a member arranged on the upper surface side of the planar body.

In addition, in the above embodiment, the planar body has air permeability. Air permeability may be imparted by forming holes penetrating the front and back of the planar body, or a continuous cell structure in which cells are connected to the planar body, or a space between the continuous filamentous bodies is communicated. Air permeability may be provided by adopting a three-dimensional network structure.

In addition, the above actual form can be regarded as an invention of a bed equipped with the above mattress. Furthermore, it can be regarded as an invention of a sofa equipped with the above mattress.

In the planar body set of the above embodiment, the plurality of planar bodies include planar bodies with different elasticity.

In the mattress topper of the above practical form, the planar body corresponds to the waist and buttocks of the human body and supports the waist and buttocks of the human body. Also, it supports the head of the human body in correspondence with the head of the human body. Furthermore, it supports the legs of the human body in correspondence with the legs of the human body.

The mattress topper of the above-described embodiment further comprises an openable and closable cover that encloses the base layer and the planar body, and the planar body is capable of changing the arrangement of the planar body on the upper surface side of the base layer. That is, the base layer and the planar body are housed in an openable and closable cover, and by opening the cover and grasping the planar body housed in the cover, the arrangement of the planar body on the upper surface side of the base layer can be changed. and

The mattress topper of the above embodiment further comprises a sheet pad such as a quilted layer laid on the upper surface side of the base layer via the planar body. That is, the sheet pad is laid on the upper surface side of the base layer via the planar body.
The seat pad may have sufficient thickness and cushioning properties to prevent the user from feeling the edges and corners of the planar body.

Further, in the mattress topper of the above embodiment, the planar body is formed by combining a plurality of divided planar bodies. That is, it is preferable to combine a plurality of split planar bodies obtained by dividing a planar body for supporting the waist and buttocks of the human body so as to correspond to the waist and buttocks of the human body.
In the mattress topper of the above embodiment, the planar body is formed by arranging divided planar bodies in the width direction perpendicular to the length direction of the mattress. That is, preferably, in the planar body corresponding to the waist and buttocks of the human body and supporting the waist and buttocks of the human body, the divided planar bodies are formed in parallel in the width direction perpendicular to the length direction of the mattress. is.
In the mattress topper of the above embodiment, the planar body or the divided planar body has a constricted portion whose width is partially reduced at the central portion in the longitudinal direction or the lateral direction.

The above embodiment of the mattress topper further has a mark indicating the placement position of the planar body.
The mark may be provided on a member arranged on the lower surface side of the planar body, or may be arranged on a member arranged on the upper surface side of the planar body.

In carrying out the present invention, the configuration, shape, quantity, material, size, manufacturing method, etc. of other parts of the mattress, sofa, bed, planar body, and mattress topper are limited to the above embodiments. not something. In addition, since the numerical values given in the above embodiment indicate proper values suitable for implementation, even if the numerical values are slightly changed, the implementation is not denied.

0100 bed (bed with mattress)
0110,0210,0310,0510,0610 Mattress 0113

Cover

0120,0220,0320

Spring coil layer

0121,0221

Coil spring

0130,0230,0330 Cushion layer 0130H High

elastic modulus portion

0240,0340,0440,0640,0660,06 70 planar Body 0440d Waist 0650 Mattress Topper 0652 Base Layer B Waist Buttocks H Head L Legs

Claims

A plurality of coil springs arranged at the same height so as to have a repulsive force in the vertical direction are arranged so that the arrangement cannot be changed. , back resting area, buttocks resting area, leg resting area, heel resting area, etc.).
The amount of weight load per unit coil spring, which varies depending on the region, is changed according to the elasticity of the planar body (including the case where it is composed of multiple layers) arranged above the coil spring, 2. The mattress according to claim 1, wherein the presence or absence according to the area where the planar body is placed on the mattress is changed depending on the individual area of the planar body to be placed.
a spring coil layer having a plurality of pocketed coil springs;
a planar body partially disposed on the upper surface side of the spring coil layer, having elasticity, and supporting a specific part of the human body lying on the upper surface side of the spring coil layer;
A mattress comprising:
The mattress according to claim 3, wherein the planar body supports the waist and buttocks of the human body.
The mattress according to claim 3, wherein the planar body supports the head of the human body.
The mattress according to claim 3, wherein the planar body supports the legs of the human body.
The mattress according to claim 3, wherein the planar body is formed by combining a plurality of split planar bodies.
The mattress according to claim 7, wherein the divided planar bodies are arranged side by side in the width direction perpendicular to the length direction of the mattress.
The mattress according to claim 7, wherein the planar body or the divided planar body has a constricted portion whose width is partially reduced at the central portion in the longitudinal direction or the lateral direction.
　The mattress according to claim 3, wherein the planar body is provided with a through hole or a concave groove.
A base mat layer made of urethane foam,
a planar body partially disposed on the upper surface side of the base mat layer, having elasticity, and supporting a specific part of the human body lying on the upper surface side of the base mat layer;
A mattress comprising:
A planar body partially arranged on the upper surface side of a spring coil layer having a plurality of pocket coil springs, having elasticity, and supporting a specific part of the human body lying on the upper surface side of the spring coil layer.
A planar body partially arranged on the upper surface side of a base mat layer made of urethane foam, having elasticity, and supporting a specific part of the human body lying on the upper surface side of the base mat.
Per unit area depending on the top surface area of the bedding, including the body resting mattress (e.g., head rest area, back rest area, butt rest area, leg rest area, heel rest area, etc.) A sheet-shaped body set consisting of a plurality of sheet-shaped bodies placed on the upper side of the mattress in order to differentiate the weight bearing capacity of the mattress.
A mattress topper laid on the upper surface side of a mattress in which a spring coil layer having a plurality of pocketed coil springs is provided,
a cushioned base layer,
A mattress topper comprising: a sheet-shaped body partially arranged on the upper surface side of the base layer, having elasticity, and supporting a specific part of the human body lying on the upper surface side of the mattress topper.
A mattress topper laid on the upper surface side of a mattress made of urethane foam,
a cushioned base layer,
A mattress topper comprising: a sheet-shaped body partially arranged on the upper surface side of the base layer, having elasticity, and supporting a specific part of the human body lying on the upper surface side of the mattress topper.