JPH0520212Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a mattress made of uneven sponge mat.

(Prior art and its problems) Conventionally, this type of mattress made of uneven sponge mat is a single piece of plate-shaped sponge mat with an uneven surface and a flat back surface, and has a required length. The uneven portions are intended to prevent bedsores and improve the comfort of use.

However, shikifutons are usually folded into two or three to make them more compact for storage, but with the prior art mentioned above, even if you try to fold them into three, etc., the sponge is forcibly crushed at the folded part. Because the restoring force of the uneven portions caused it to return to its original state and it was impossible to fold it, it became bulky when stored, and an improvement has been desired.

Also, if you forcefully fold the fold and try to keep it in that state, the sponge (uneven part) of the folded part may
Since the crushed state continues for a certain period of time, there is a risk that the part may be deformed, and the uneven portions cannot be used effectively, which is not preferable.

(Problem to be solved by the invention) The present invention was devised in view of the above-mentioned problems of the prior art, and its purpose is to form an uneven surface and a flat back surface. To meet the demands of users, etc., by providing a foldable bed mattress made of a plurality of sponge mats, which prevents bedsores and improves comfort in use, and which is compact when stored without straining the uneven parts. It is.

(Means for Solving the Problems) The technical means of the present invention to achieve the above object is to fabricate a plurality of sponge mats each having an uneven surface and a flat back surface using a breathable cloth. They are arranged in parallel and packaged in the form of divided packets, and the upper and lower edges of opposing side edges are alternately joined to make them foldable.

(Function) By using the above-mentioned technical means, when the sponge mats are arranged in parallel and wrapped in a package shape with breathable cloth, and the upper and lower edges of the opposing side edges are alternately joined, each sponge mat A mattress of the required length is formed with the uneven part as the upper surface (body contact surface), and by alternately inverting the packaged sponge mats using the joint of the opposing side edges as a base, each sponge mat Can be folded into layers without being crushed.

In addition, when in use, each uneven part makes point contact with the user's body, dispersing the load pressure and preventing the load pressure from continuing, and the breathable fabric expands and contracts as the sponge mat expands and contracts. At the same time, the hot air inside the mattress is quickly released.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.The mattress A of this example is made of two layers of sponge mats a and a, as shown in FIG.
It is a two-layer, three-fold type product in which three parts are fixed with a slip-preventing member b, arranged in parallel, and each part is wrapped in a sachet-like shape with a breathable fabric c.

Sponge Mat A is about the same size as a regular Sponge Mat divided into thirds in the transverse direction, and has an uneven surface and a flat back surface.
Generated by the reaction between isocyanate and water and the three-dimensional urethane bond created by mixing isocyanate (TDI tolylene di-cysocyanate) and polyol (polyester or polyether) with water and a catalyst at a certain ratio. It is a plastic foam formed by a parallel reaction with the foaming of carbon dioxide gas.

To give an example of sponge pine a, the standard specific gravity is
0.032, and the hardness is approximately 6.8Kg/314 at 25% compression.
cm ² and 65% compression is 20.7Kg/314cm ² and 40
It has a thickness of ~50mm, and the unevenness of its surface is 40mm.
In the case of a thickness of , one surface is formed with a deep valley A of 25 mm in the front, rear, left and right directions, a shallow valley B of 12.5 mm in the diagonal direction, and irregularities with short pitches in the front, rear, left and right directions. If the thickness is 45 mm, the deep valleys in the front, rear, left, and right directions are 30 mm, and the shallow valleys in the diagonal direction are 15 mm.
In the case of 50mm, they become 32mm and 16mm, respectively.

In addition, the long side of the pitch is approximately 55 mm, and the short side is approximately 55 mm.
It should be about 35mm.

As shown in the figure, the sponge mats a, a have uneven surfaces a ₁ of the sponge mats a under them.
Then, the flat surfaces a ₂ of the sponge mats a to be placed on top of each other are brought into contact with each other, and then fixed with a slip prevention member b, or, although not shown, the flat surfaces a ₂ are brought into contact with each other with the uneven surfaces Layer them so that a ₁ is on the outside, that is, the top and bottom surfaces, and secure with a slip prevention member.

The anti-slip member b is made of the same material as the sponge mat a, or is made by cutting fabric, rubber sheet, etc. into an appropriate shape (in the illustrated example, a rectangular shape),
Paste with an adhesive (e.g. urethane adhesive) or the like over the required portions of the periphery of the sponge mats a, a, for example, across the transverse side surfaces a ₃ , a ₃ of the sponge mats a, a stacked above and below, or in the vertical direction. do.

Note that the material and shape of the slip prevention member b shown above are merely an example, and are not limited to these. It may also be sewn onto the sponge mats a, a.

Although not shown, a breathable flooring prevention layer material made of wire mesh, felt plate, etc. may be interposed between the sponge mats a, a to improve load dispersion and reduce the feeling of pressure.

The breathable fabric c is made of a breathable fabric such as knitted fabric (made of raw yarn such as synthetic fiber knitted into a 4-course diamond mesh "course/16") that stretches front to back, left and right, or cotton fabric, and is joined at one end. Three bag parts 1, 2, and 3 of the shape are formed in parallel, and the bag part 1
The layered sponge mats a and a are stuffed and wrapped in sachets, respectively, and the joint portion 1'2' is, for example, the opposing side surface 1 of the bag portions 1 and 2.
The upper edges 1a' and 2b' of a and 2b are joined to form a joint 1'.
Then, the bag portion 2 and the bag portion 3 adjacent to the other side 2a of the bag portion 2 have their opposing lower edges 2a',
3b' are joined together to form a joint 2'.

In addition, even when the number of folds is large, such as when folding into four, the upper and lower edges shall be joined alternately in sequence.

Therefore, by alternately inverting each joint 1', 2', each sponge mat a can be folded into a layered structure without being crushed.

Furthermore, if knitted fabric is used as described above, it will expand and contract as the sponge mat a expands and contracts, so the expansion and contraction of the sponge mat a will not be forced, and the hot air inside will be easily released to the outside.

Therefore, in this embodiment, the sponge mats a and a are layered to form an uneven surface, and the anti-slip member b is provided around the periphery of the sponge mats a, a, so that the uneven portions of the surface disperse the body pressure. The body pressure transmitted to the underlay sponge mat a is dispersed by its uneven parts, reducing the feeling of contact with the floor and pressure, and tensile forces are applied vertically and horizontally to the sponge mats a and a layered above and below. Since the slippage prevention member b prevents or minimizes slippage, the feeling of use during use (when lying down) is not impaired.

Furthermore, even in the mat stuffing work, no misalignment occurs between the two layered sponge mats a, a, so the stuffing work can be done smoothly without using unnecessary nerves, and the work efficiency is improved.

(Effects of the invention) Since the present invention has the above-mentioned configuration, it has the following effects.

Sponge mats with an uneven surface and a flat back surface are lined up and covered with breathable cloth in a sachet-like manner, and the upper and lower edges of opposing side edges are alternately joined. As a result, while the uneven parts and breathable fabric prevent pressure sores and improve the comfort of use, it can be folded from the joints when stored, instead of forcing the sponge at the folded part to collapse as in the past. As a result, the resiliency prevents the mattress from returning to its original state, which allows the mattress to be made more compact and prevents it from becoming too bulky when stored.As a result, it satisfies the needs of consumers and increases the product value. Improvements can be made.

Further, since the folded state is not forced to be maintained by any means as in the conventional case, it is very useful without causing any adverse effects such as deformation on the uneven portions.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of the bed mattress of the present invention, and FIG. 2 is a view showing the mattress in a folded state. In addition, in the figure, A... mattress, a... sponge mat, a ₁ ... uneven surface, a ₂ ... flat surface, c... breathable cloth, 1, 2, 3... bag portion, 1' , 2'...joint part,
1a', 2b'...upper edge, 2a', 3b'...lower edge.

Claims (1)

[Scope of utility model registration request] Two sponge mats, each with an uneven surface and a flat back surface, are stacked one on top of the other, a slip-preventing member is provided on the side edge of the mat, and they are wrapped in parallel and divided packages with breathable cloth. This mattress is made foldable by alternately joining the upper and lower edges of the side edges.