JP2001017278A - Air mattress - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strengthen the adherence of a joint part of a rubber-coated cloth forming the both surfaces of an air mattress and simplify the joint structure sufficiently, in the air mattress comprising the rubber-coated cloth. SOLUTION: Two pieces of hanging cloths a2 are overlapped each other, the both hanging cloths a2 are sewn along the route of an air chamber hanging part 1 to be jointed, and rubber-coated cloths a1 a little bit larger than the hanging cloths a2 are completely bonded to the both exposed faces of the jointed hanging cloths a2. This air mattress is formed by making the overlap width of the both rubber-coated hanging cloths a1 adhered, and forming an air chamber 2 partitioned along the hanging part 1 of the hanging cloths a2 between the both rubber-coated hanging cloths a1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air mat, and more particularly, to an air mat having a substantially plate-like outer shape when inflated.

[0002]

2. Description of the Related Art Conventionally, among the generally plate-shaped air mats formed by using a rubberized cloth, there is a type in which a substantially band-shaped hanging cloth is provided between the rubberized cloths on both front and rear sides (FIG. 10). ).
The air mat 100 has both sides of the air chamber made of a rubberized cloth 101 and both rubberized cloths 10.
1, a substantially strip-shaped hanging cloth 102 is provided between them. A large number of hanging cloths 102 are juxtaposed at equal intervals in the width direction of the air mat, so that the thickness of the air mat 100 when inflated is substantially constant due to the tension of the hanging cloths 102 juxtaposed as described above. , And the outer shape of the air mat 100 is maintained in a substantially plate shape.

[0003]

However, the hanging cloth 102 used for the above-described air mat 100 is a band-shaped cloth 1.
Adhesive pieces 102b are adhered along the upper and lower sides of 02a, respectively, and the adhesive piece 102b and the band-shaped cloth 102a are opened in a substantially Y-shaped cross section at the sewn portion to form an adhesive surface 102c.

Accordingly, in the above-described structure of the hanging cloth 102, the area to be bonded to the inner surface of the rubberized cloth 101 on both the front and back sides is equal to the both sides of the band-shaped cloth 102a and the bonding piece 102.
b and only the adhesive surface 102c formed by sewing. Therefore, it is difficult to reliably secure a sufficient adhesive force only with the bonding surface 102c.
When a defective bonding portion occurs in a part of the rubber cloth 02c, the bonding surface gradually peels off from that part, and finally, the bonding surface 102c of the hanging cloth 102 is completely removed from the inner surface of the rubberized cloth 101 as shown in FIG. There is a case where the air chamber in this part is largely swelled by peeling off.

[0005] Further, the air mat 1 having the above-mentioned conventional structure.
In the case of 00, it takes a great deal of time to manufacture the hanging cloth 102, and the work of linearly bonding the hanging cloth 102 along the inner surfaces of the rubberized cloth 101 on both the front and back sides of the air mat 100 is required. It was even more difficult.

SUMMARY OF THE INVENTION An object of the present invention is to provide an air mat constructed using a rubberized cloth as described above. The object of the present invention is to make the joining force of the rubberized cloths constituting both the front and back surfaces of the air mat strong, and at the same time, to join the air mat. The structure is reasonably simplified,
The object is to greatly reduce the labor and cost of manufacturing.

[0007]

In order to solve the above-mentioned problems, an air mat according to the present invention is obtained by superposing two hanging cloths, each of which is cut slightly smaller in accordance with the outer shape of the air mat body, and superimposes the two. The hanging cloth is joined by sewing along the path of the air chamber hanging part arbitrarily set, and on both exposed surfaces of the joined both hanging cloths, the amount of the bonding allowance is smaller than that of the same hanging cloth. A large-sized rubberized cloth is adhered to the entire surface, and the bonding margins of the two rubberized cloths that protrude from the outer peripheral edges of the two hanging cloths are bonded to each other, and the hanging of the hanging cloth is interposed between the two rubberized cloths. The air chamber is configured to be partitioned along the recess.

According to the above-mentioned means, the two superimposed
The hanging cloths are joined by sewing along the path of the air chamber hanging section. A rubberized cloth is entirely adhered to both exposed surfaces of the joined hanging cloths so as to sandwich the both hanging cloths. In the rubberized cloth formed one size larger than both the rubberized cloths, an adhesive margin protruding outward from the outer peripheral edges of the both hanging cloths is formed. Then, by bonding the bonding margins to each other, airtightness is maintained between the two rubberized cloths, thereby forming an air chamber. As described above, the air chamber formed between the two rubberized cloths is a bulged air chamber in which the hanging cloth and the rubberized cloth adhered thereto are hung along the path of the hanging part by sewing. Has a shape partitioned by the hanging portion. Therefore, when air is introduced into the air chamber of the air mat configured as described above and inflated, the hanging cloth and the rubberized cloth are hung along the path of the air chamber hanging section, and the space between these hanging sections expands. As a result, the air chambers having a substantially circular cross section are bulged and formed adjacent to each other.

According to a second aspect of the present invention, in the air mat of the first aspect, the air mat covers an adhesive edge on the air chamber side in an adhesive margin provided along the outer circumference of both rubberized cloths in the air mat body. And a bonding tape which is bent in a substantially V-shaped cross section and adhered along the adhesive edge.

In this case, when air is pressed into the air chamber of the air mat, a uniform pressure is applied to the inner surface of the air chamber formed inside the air mat body. Therefore, the same pressure as the pressure applied to the air chamber surface is also applied to the bonding edge on the air chamber side in the bonding margin where the circumferences of the rubberized cloths are overlapped and bonded. At this time, the pressure applied to the inner surface of the air chamber acts so as to widen the adhesion allowance from the air chamber inner side in the adhesion allowance. In the normal case, even if the pressure inside the air chamber is applied to the bonding margin as described above, the bonding of the bonding margin does not immediately peel off, but as the use is repeated, the air space of the bonding margin is exposed in the air chamber. The adhesive edge exposed on the inside acts to be gradually expanded and opened by the pressure inside the air chamber. Eventually, similarly to the above-mentioned hanging cloth, the bonding surface is gradually peeled off from the weakly bonded portion, and finally the bonding of the bonding margin is peeled off, resulting in air leaking from the inside of the air chamber.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show an air mat A embodying the present invention. The air mat A is composed of two rubberized cloths a1 and two hanging cloths a2. The air mat body A 'is formed in a substantially rectangular shape in a plan view, and an adhesive width 3 having an appropriate width is formed along four surrounding sides, and a linear hanging portion 1 is formed along the front and back surfaces of the air mat body A'. Are arranged in parallel at predetermined intervals, and an air chamber 2 that expands in a substantially circular cross section is formed between the hanging portions 1.

In the air mat A, first, a cloth material made of a high-tensile fiber such as nylon is cut into a shape slightly smaller than the air mat body A 'to form two hanging cloths a2. On the other hand, the two hanging cloths a2 are joined by being overlapped and sewn along the path b which becomes the hanging portion 1 of the air mat body A '. That is,
The two hanging cloths a2 are a predetermined number of seams a3 sewn along the path b of the linear hanging portion 1 set in advance.
(FIG. 3).

The rubberized cloth a1 is a rubberized cloth obtained by covering both the front and back surfaces of a base cloth with rubber layers having an appropriate thickness.
It is cut to fit the outer shape of the air mat body A 'in the contracted state. In other words, the rubberized cloth a1 is cut larger than the outer shape of the two hanging cloths a2 joined as described above by the width for attaching the bonding margin 3 and the joining tape 5 described later.

In addition, the rubberized cloth a1 has a bonding tape 3 which has a width of the bonding margin 3 set along the outer periphery and is bent in a substantially V-shaped cross section along the inner side of the bonding margin 3.
Make sure that there is enough width to adhere. Therefore, the outer shape of the above-mentioned hanging cloth a2 is set to a size to be adhered to the inside of the above-mentioned joining tape 5 (FIG. 4). Two pieces of the above-mentioned rubberized cloth a1 are prepared, the width of the adhesive tape 3 is set on the inner peripheral side of one of the rubberized cloths a1, and the width of the bonding tape 3 is further folded along the inner side. Adhere one side. The joining tape 5 is a band-like material formed by folding a tape having an appropriate width into two and forming a substantially V-shaped cross section, and any existing tape may be used as long as it has the required strength and adhesive strength. . Furthermore, the above-mentioned bonding tape is preferably airtight. However, since the confidentiality is maintained by the bonding allowance 3 provided around both rubberized cloths a1, there is no problem even if a non-airtight tape is used. Will not occur.

Thereafter, the exposed surfaces of the two hanging cloths a2 joined by sewing as described above are completely adhered so as to sandwich the exposed surfaces from both the front and back surfaces. At this time, the width of the bonding margin 3 of both rubberized cloths a1 and the width of bonding the other side of the joining tape 5 project outside the outer peripheral edge of the hanging cloth a2. And one side of the bonding tape 5 that has not been bonded is simultaneously bonded (FIG. 4).

Thus, the outer peripheral portion of the air mat body A 'thus formed is bonded with the bonding tape 5 folded in two along the inner side of the bonding margin 3. The bonding tape 5 is bonded so as to cover the bonding edge c of the bonding margin 3 on the air chamber side from the inside of the air chamber 2. An air inlet 4 is provided at the end of the air mat A configured as described above.

The air mat A constructed as described above is
The rubberized cloth a1 and the hanging cloth a2 are entirely adhered to form a single sheet. In addition, the bonding allowance 3 for both rubberized cloths a1
Are bonded together, and furthermore, the bonding edge c inside the bonding allowance 3
Since the bonding tape 5 is adhered so as to cover the inside, the problem that the adhesion margin 3 peels off from the inside can be effectively prevented.
Further, as described above, the air chamber formed between the two rubberized cloths a1 is partitioned at equal intervals along the path b (seam) of the hanging portion 1 formed by sewing the hanging cloth a2. An elongated air chamber bulging portion 2 ′ having the inside as the air chamber 2 is formed between the hanging portions 1. In addition, both ends of each of the above-mentioned hanging portions 1 are in a state where air can be ventilated by a gap d provided between the hanging tape 1 and the joining tape 5 along the inside of the bonding margin 3 of the rubberized cloth 1 (FIG. 3). , FIG. 6).

Therefore, when air is injected from the air injection port 4 of the air mat A and air is introduced into the air mat body A ', the air chamber 2 formed between the suspension portions 1 is formed.
Gradually expands (FIGS. 2 and 5). At the same time, the hanging cloth a2 and the rubberized cloth a1 adhered in a single sheet are suspended along the hanging section 1. And ultimately,
The air chambers 2 formed between the hanging portions 1 expand sufficiently, and the air chamber bulging portions 2 ′ having a substantially circular cross section are partitioned by the hanging portions 1 and bulge adjacent to each other. (FIGS. 1 and 2).

As described above, the air chamber 2 formed between the two rubberized cloths a1 is formed by the seam a3 formed by sewing the hanging cloths a2 together. The pulling cloth a1 is suspended in a straight line, thereby forming a suspension section 1 that linearly partitions between the air chamber bulging sections 2 ′ (FIG. 2). That is, when air is introduced into the air chamber 2 of the air mat A configured as described above and inflated,
An air chamber bulging portion 2 ′ having a substantially circular cross section is bulged and formed between the hanging portions 1 (FIG. 1). The number, diameter, length, and the like of the air chamber bulging portions constituting the air mat body A 'may be arbitrarily changed.

In the air mat A of the above embodiment,
The bonding tape 5 is bonded so as to cover the bonding edge c exposed on the air chamber 2 side of the bonding margin 3. However, according to the gist of the present invention, the bonding tape 5 described above does not necessarily need to be provided, and the bonding tape 5 may be configured to maintain the bonding only by bonding the bonding margins 3 to each other.

Further, the external shape of the suspended portion of the air mat of the present invention, that is, the outer shape of the air chamber bulging portion is not limited to the form in which cylindrical air chambers are arranged in parallel like the above-mentioned air mat A. Any suspension route may be used as long as it can be reliably expanded to form a plate-shaped air mat. For example, like an air mat A2 shown in FIG.
An air chamber bulging portion 2 'formed in a substantially spiral shape, or
As in the case of the air mat A3 shown in FIG. 8, a long air chamber bulging portion 2 'having one end serving as a ventilation path may be alternately combined. Further, as in an air mat A4 shown in FIG. 9, the air chamber bulging portion 2 'can be formed like a geometric pattern. In addition, the shape of a character or the like may be represented by an air chamber bulging portion (not shown). The air mat of the present invention may be used for any existing structure as long as it is a structure using an air mat. For example, it may be used on the peripheral wall or bottom surface of a small pool, or on the bottom surface of a large rubber boat for going down a river.

[0022]

As described above, according to the present invention, two hanging cloths cut in accordance with the outer shape of the air mat body are overlapped, and the two hanging cloths are placed along the path of the air chamber hanging section. The rubberized cloth is adhered to both exposed surfaces of the two hanging cloths by sewing, and the bonding margins of the rubberized cloths are adhered to each other. The air chamber is configured to be partitioned along the hanging portion of the cloth.

Therefore, the rubberized cloth and the hanging cloth on both the front and back surfaces constituting the air mat body can be completely adhered to ensure a sufficient bonding force, and the front and back surfaces of the air chamber hanging portion can be secured. Since the hanging cloths at the joints can be strongly joined to each other by sewing, it is possible to reliably prevent a problem in which the adhesive surface of the hanging cloth is peeled off and the air chamber swells as in the conventional air mat described above. be able to.

Further, when suspending the inner surfaces of the rubberized cloth on both the front and back surfaces constituting the air mat body to keep the outer shape of the air mat body in a plate shape having a predetermined thickness, a conventional air mat is used. Eliminates the need for a complicatedly structured hanging cloth. Therefore, it is possible to omit the production of the hanging cloth, which is very troublesome, and the troublesome work of bonding and suspending the hanging cloth between the inner surfaces of the rubberized cloth on both the front and back surfaces. As a result, as compared with the air mat of the conventional structure, the number of parts and the number of manufacturing steps can be significantly reduced, and the manufacturing cost can be effectively reduced. In addition, since the air mat body is used to completely adhere a durable hanging cloth to the inner surface of the rubberized cloth, the work of bonding to the rubberized cloth is easy, and the drawing cloth is reinforced by the hanging cloth. As a result, the strength of the air mat body can be improved simultaneously with the hanging of the rubberized cloth.

According to a second aspect of the present invention, there is provided the air mat, wherein the air mat is bent so as to have a substantially V-shaped cross section so as to cover a bonding edge on an air chamber side in a bonding margin provided along an outer periphery of the air mat body. It is formed by bonding with a tape so as to cover the bonding edge. Therefore, even if the pressure of the air sealed in the air chamber of the air mat body is applied each time it is used and the air mat acts so as to widen the bonding edge portion on the air chamber side of the bonding allowance where peeling is likely to occur, the bonding is performed as described above. Because the edge is adhered so as to be covered with the joining tape,
Even in the case of long-term use, it is possible to reliably prevent the air mat body from peeling off due to the adhesion allowance of the air mat body as in the conventional case.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an air mat embodying the present invention.

FIG. 2 is a longitudinal sectional view showing the vicinity of an edge of the air mat.

FIG. 3 is a plan view showing a partially cut-out hanging cloth sewn together.

FIG. 4 is an exploded perspective view showing a hanging cloth and both rubberized cloths.

FIG. 5 is a longitudinal sectional view showing the vicinity of an air inlet of the air mat.

FIG. 6 is a partially cutaway plan view showing a state where air is injected into the air mat of the present invention.

FIG. 7 is a plan view partially showing an air mat in which an air chamber bulging portion is formed in a substantially spiral shape.

FIG. 8 is a plan view showing a partially omitted air mat formed by alternately combining long air chamber bulging portions each having an air passage at one end.

FIG. 9 is a plan view partially showing an air mat in which an air chamber bulging portion is formed like a geometric pattern.

FIG. 10 is a longitudinal sectional view showing the vicinity of an edge of a conventional air mat.

FIG. 11 is a longitudinal sectional view showing the conventional air mat from which the adhesive surface of the hanging cloth has been peeled off.

[Explanation of symbols]

 A, A1, A2, A3, A4 ... air mat a1 ... rubberized cloth a2 ... hanging cloth a3 ... seam b ... path (of the hanging part) c ... adhesive edge 1 ... Hanging part 2 ... Air chamber 2 '... Air chamber bulging part 3 ... Adhesion allowance 4 ... Air injection port 5 ... Junction tape

Claims (2)

[Claims] 1. Two hanging cloths cut one size smaller corresponding to the outer shape of the air mat body are overlapped, and the two hanging cloths are sewn along a path of an air chamber hanging part set arbitrarily. Then, the rubberized cloths formed to be one size larger than the hanging cloths by an amount equal to the bonding allowance are respectively adhered to both exposed surfaces of the joined hanging cloths. An air mat comprising an adhesive margin protruding from an outer peripheral edge of a hanging cloth adhered to each other, and an air chamber partitioned between these rubberized cloths along a hanging portion of the hanging cloth. 2. A bonding tape having a substantially V-shaped cross section so as to cover a bonding margin on an air chamber side in a bonding margin provided along an outer periphery of both rubberized cloths in the air mat body. The air mat according to claim 1, wherein the air mat is adhered along.