JP3234983U - mattress - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mattress which is hard to settle, can provide a comfortable sleeping comfort, and is easy to fold. SOLUTION: A polyethylene foam layer 2, a solid cotton layer 3 or a urethane foam layer provided above the polyethylene foam layer 2, and a rolled cotton layer or a batting layer 4 provided above the solid cotton layer 3 or the urethane foam layer. In the polyethylene foam layer 2, a plurality of polygonal through holes 22 are formed, and among the plurality of through holes 22, the plurality of through holes located on the bending line L parallel to the lateral direction are the bending lines. It is a mattress 1 characterized in that two of its apex are located on L. [Selection diagram] Fig. 1

Description

The present invention relates to a mattress.

As is well known, mattresses made of solid cotton or urethane sheet as the core material have the characteristic of having good breathability, but when they are used for a long period of time, they become worn out and their elasticity decreases. Therefore, it is desired to develop a mattress that may cause back pain of the user and is less likely to cause sagging.

In Patent Document 1, in order to reduce the sagging, a polyethylene foam having a foaming ratio of 30 to 50 times and a polyurethane foam are laminated to form a core, and futon cotton is placed on the upper surface and the lower surface of the core, respectively. It discloses mattresses that are characterized by being layered.

Patent Document 2 describes a core material layer composed of a cross-linked polyethylene foam layer and a solid cotton layer having a closed cell structure having irregularities on the entire surface, a tick-proof sheet layer provided on the surface of the core material layer, and charcoal powder. Disclosed is a mattress provided with a charcoal sheet layer and covered with a duvet cover, and the surface unevenness of the cross-linked polyethylene foam layer of the core material layer has a height difference of 10 to 20 mm and a pitch of 30 to 50 mm. Then, it is formed in a staggered shape, with a small circular through hole with a diameter of 1 to 5 mm in the center of the recess, and a width of 5 to 10 mm and a length of 10 to 40 mm extending in the longitudinal direction of the mattress at the bent position of the mattress. It is disclosed that the slit-shaped through holes are formed in parallel in the width direction of the mattress at a pitch of about 30 to 60 mm.

Japanese Unexamined Patent Publication No. 8-196392 Utility Model Registration No. 3206165 Gazette

However, in the mattress of Patent Document 1, although a large number of holes are provided in the core for the purpose of weight reduction, the air permeability is low because there are no holes in the central region in a plan view, and moisture easily accumulates during use, which is comfortable. There was a problem with sex. In addition, there is a problem that the entire mattress cannot be folded compactly and it is not easy to store it in a closet or the like.

In the mattress of Patent Document 2, the air permeability is improved by the small circular through hole having a diameter of 1 to 5 mm, and the slit-shaped through hole extending in the longitudinal direction of the mattress is arranged in parallel in the width direction at the bent position. The bendability was slightly improved by being formed. However, such a slit-shaped through hole extending in the longitudinal direction is particularly insufficient to bend in the longitudinal direction, and the slit-shaped through hole makes the air permeability partially too high, so that the body part is kept warm during use. There was a problem that the sex was low.

Therefore, it is an object of the present invention to provide a mattress that does not easily settle even after long-term use, can provide a comfortable sleeping comfort, and is compact and easy to fold as a whole.

The present invention comprises a polyethylene foam layer, a solid cotton layer or urethane foam layer provided above the polyethylene foam layer, and a rolled cotton layer or batting layer provided above the solid cotton layer or urethane foam layer. A plurality of polygonal through holes are formed in the polyethylene foam layer, and among the plurality of through holes, the plurality of through holes located on the bending line parallel to the lateral direction are two of the apex on the bending line. It is a mattress characterized by the location of one.

The shape of the plurality of through holes located on the bending line is a polygon of a quadrangle or more, and it is preferable that one of the diagonal lines of the polygon is located on the bending line.

The shape of the plurality of through holes located on the bending line is preferably a square or a rhombus.

Here, the "rhombus" includes a shape similar to a rhombus, and is not limited to those having the same length on each side. For example, a quadrangle in which two adjacent sides are longer than the other two sides is also included.

It is preferable that the shape of the plurality of through holes located on the bending line is a rhombus, the longer diagonal line is parallel to the longitudinal direction, and the shorter diagonal line is parallel to the lateral direction.

The upper surface of the polyethylene foam layer has a three-dimensional corrugated uneven shape, and the ratio of the length of the diagonal line parallel to the lateral direction of the plurality of through holes to the pitch of the concave-convex shape in the lateral direction on the bending line is , 0.3 to 0.6 is preferable.

It is preferable that the through holes are formed in a staggered shape on the entire surface of the polyethylene foam layer.

According to the present invention, by adopting a polyethylene foam layer as a part of the middle material, the settling of the mattress is suppressed, and the three-dimensional corrugated uneven shape and through holes formed in the polyethylene foam layer provide comfortable ventilation and heat retention. Can maintain sex. Further, by making the through hole a polygon and locating the diagonal line on the bending line, it is easy to bend and can be folded compactly. In addition, the bendability can be efficiently improved while maintaining the strength.

It is sectional drawing in the bending line L of the mattress 1 of 1st Embodiment. It is a top view of the polyethylene foam layer 2 in the same embodiment. It is a top view which shows a part of the polyethylene foam layer 2 in the same embodiment. It is sectional drawing in the bending line L of the mattress 101 of 2nd Embodiment.

The first embodiment of the present invention will be described with reference to FIGS. 1 to 3.

As shown in FIG. 1, the mattress 1 includes a polyethylene foam layer 2, a solid cotton layer 3 in contact with the surface of the polyethylene foam layer 2, and a batting layer 4 in contact with the surface of the solid cotton layer 3. The polyethylene foam layer 2 is provided with a solid cotton layer 5 in contact with the lower surface of the polyethylene foam layer 2 and a batting layer 6 in contact with the lower surface of the solid cotton layer 5, and is covered with a mattress cover 7.

The batting layers 4 and 6 are fixed in the mattress cover 7 by quilting, but the present invention is not limited to this, and the wrapping cotton layer is arranged on the upper surface of the solid cotton layer 3 and the lower surface of the solid cotton layer 5, and the entire mattress cover It may be covered with 7. Further, instead of the solid cotton layers 3 and 5, a urethane foam layer having an arbitrary foaming ratio may be used. Further, the solid cotton layer 5 and the batting layer 6 existing below the polyethylene foam layer 2 can be omitted.

The size of the mattress 1 is exemplified, but is not limited to 90 to 100 cm in width and 200 to 210 cm in length. Other sheet materials may be arranged between the polyethylene foam layer 2 and the solid cotton layers 3 and 5, between the solid cotton layer 3 and the batting layer 4, and between the solid cotton layer 5 and the batting layer 6.

The polyethylene foam layer 2 is made of closed cell polyethylene foam (EPE) and contributes to the sag resistance of the mattress 1. Polyethylene foam (EPE) is too hard to be used alone as a mattress 1, but by providing a solid cotton layer 3 or a urethane foam layer on it, a comfortable sleeping comfort can be realized.

The polyethylene foam layer 2 has very high heat insulating properties, but has low air permeability. Therefore, in the present invention, the three-dimensional corrugated uneven shape 21 is formed on the upper surface of the polyethylene foam layer 2 (see FIGS. 1 and 3), and a partial gap is formed between the polyethylene foam layer 2 and the solid cotton layer 3 arranged on the three-dimensional corrugated uneven shape 21 (see FIGS. 1 and 3). By doing so, breathability is ensured. Further, in a plan view, the through hole 22 is provided on the entire surface of the polyethylene foam layer 2 (see FIG. 2) to ensure air permeability.

As shown in FIGS. 1 and 3, the upper surface of the polyethylene foam layer 2 has a three-dimensional corrugated uneven shape 21 formed by profile processing, and the concave portions 23 and the convex portions 24 are arranged in a staggered manner, respectively. Specifically, the polyethylene foam layer 2 having a thickness of 15 to 25 mm has irregularities with a height difference of 5 to 15 mm, and a pitch a (see FIGS. 1 and 3) of 40 to 60 mm in both the lateral direction X and the longitudinal direction Y. It is formed in a staggered pattern. This enhances breathability, and the uneven structure of the surface consisting of about several hundred points disperses the user's body pressure, alleviates the feeling of oppression, makes it possible to turn over smoothly, and sleep while relaxing. ..

As shown in FIG. 2, in the polyethylene foam layer 2, a plurality of rhombic through holes 22 in a plan view are formed in a staggered manner over the entire surface thereof. The distance b between the through holes 22 arranged in the lateral direction X is preferably 130 to 150 mm, and the distance c between the through holes 22 in the longitudinal direction is preferably 135 to 155 mm. The through hole 22 has a role of enhancing air permeability and a purpose of making it easy to bend and facilitating storage and the like.

As shown in FIG. 2, bending lines L parallel to the lateral direction X are set at positions 1/3 and 2/3 of the longitudinal direction Y of the mattress 1, and a plurality of through holes 22 are formed on the bending lines L. It is formed so that one diagonal of the rhombus of the through hole 22 is located on the bending line L. That is, the two vertices of the rhombus facing each other are located on the bending line L. As a result, the two apex regions 25 facing each other are easily bent, and the ease of bending in the longitudinal direction Y at the bending line L is improved. The bending line L is not limited to the above-mentioned position, and may be a position of 1/2 in the longitudinal direction or a position of 1/4, 1/2, 3/4. The bent line L may be, for example, a line formed as a recess on the front surface or the back surface of the cotton layers 3 and 5, or may be a virtual line.

The shape of the through hole 22 is not limited to a rhombus, and may be a triangle, a quadrangle other than the rhombus, a pentagon, a hexagon, an octagon, or a polygon. In the case of a triangle, the two vertices may be located on the fold line L, that is, one side of the triangle may be located on the fold line. In the case of a polygon having a quadrangle or more, one side thereof may be located on the bending line, but it is preferable that one diagonal line is located on the bending line from the viewpoint of bending property. Further, in order to obtain good bendability, the shape of the through hole 22 is most preferably rhombus or square.

All through holes 22 formed in the polyethylene foam layer 2 have a long diagonal line A parallel to the longitudinal direction Y and a short diagonal line B parallel to the lateral direction X, and are located on the bending line L. For the through hole 22, the shorter diagonal line is located on the bending line L. As a result, while maintaining the strength of the polyethylene foam layer 2, the ease of bending in the longitudinal direction Y is efficiently improved, and the diagonal line A makes it easy to bend in the lateral direction X, resulting in good handleability.

Further, the length of the diagonal line A of the through hole 22 is preferably 25 to 35 mm, and the length of the diagonal line B is preferably 15 to 25 mm. In the polyethylene foam layer 2, at least on the bending line L, the ratio of the length of the diagonal line B to the pitch a of the uneven shape in the lateral direction X is preferably 0.3 to 0.6. This improves the ease of bending while maintaining the strength. Further, in order to improve the air permeability and bendability, the area of the through hole 22 is preferably ^{250 to 350 mm 2.}

In the present embodiment, all the through holes 22 have the same size, but the size is not limited to this, and for example, it is also preferable to make only the through holes 22 on the bending line a large size. Further, in the present embodiment, the distance between the through holes 22 is constant as a whole over the entire surface, but it is also preferable to increase the density of the through holes 22 on the bending line L, for example.

In the present embodiment, not only the bending line L but also one of the diagonal lines of the rhombuses of all the through holes 22 is parallel to the lateral direction X, so that the through holes 22 are not limited to the above-mentioned bending line L. Since it is easy to bend at other positions, the handleability is improved.

As the solid cotton layers 3 and 5, for example, one having a thickness of 20 to 40 mm, which is formed by heat-compressing wool or polyester cotton material, can be used.

As the batting forming the batting layer 4, cotton, feathers, polyethylene cotton, polyester fiber cotton and the like can be used.

The mattress 101 of the second embodiment of the present invention will be described with reference to FIG. Since this mattress 101 basically has the same configuration as the mattress 1, the common description will refer to the illustration and description of the first embodiment and explain the differences. The second embodiment is different in that the upper surface of the polyethylene foam layer 102 is not a three-dimensional corrugated uneven shape but a plate shape having a substantially flat surface. In this embodiment, the breathability of the polyethylene foam layer 102 is improved only by the through holes 122.

Also in the second embodiment, since the through hole 122 has a substantially rhombic shape in a plan view, it is easy to bend and is easy to handle.

The present invention can provide a mattress having excellent sag resistance, bendability, and comfort, and its industrial utility value is great.

1, 101: Mattress 2, 102: Polyethylene foam layer 3, 5, 103, 105: Solid cotton layer 4, 6, 104, 106: Batting layer 7, 107: Mattress cover 21: Three-dimensional corrugated uneven shape 22, 122: Penetration Hole 23: Concave 24: Convex 25: Vertex region A: Diagonal B: Diagonal L: Bending line X: Short direction Y: Longitudinal direction Z: Thickness direction a: Pitch

Claims (6)

With a polyethylene foam layer,
A solid cotton layer or urethane foam layer provided above the polyethylene foam layer, and
A rolled cotton layer or a batting layer provided above the solid cotton layer or the urethane foam layer is provided.
A plurality of polygonal through holes are formed in the polyethylene foam layer, and a plurality of polygonal through holes are formed.
Among the plurality of through holes, the plurality of through holes located on the bending line parallel to the lateral direction are characterized in that two of their vertices are located on the bending line.
mattress. The shape of the plurality of through holes located on the folding line is a polygon of a quadrangle or more, and one of the diagonal lines of the polygon is located on the bending line.
The mattress according to claim 1. The shape of the plurality of through holes located on the bending line is square or rhombic.
The mattress according to claim 2. The shape of the plurality of through holes located on the bending line is a rhombus, the longer diagonal line is parallel to the longitudinal direction, and the shorter diagonal line is parallel to the lateral direction.
The mattress according to claim 3. The upper surface of the polyethylene foam layer has a three-dimensional corrugated uneven shape.
The ratio of the length of the diagonal line parallel to the lateral direction of the plurality of through holes on the bending line to the pitch of the uneven shape in the lateral direction is 0.3 to 0.6.
The mattress according to claim 3 or 4. The through hole is characterized in that it is formed in a staggered shape on the entire surface of the polyethylene foam layer.
The mattress according to claim 1.

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