JPH10313978A - Water bag and mattress device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the early fatigued deterioration of a bag body surrounding wall by providing at least a part of the internal or external surface of a bag body with a reinforcing elastic material for restricting the bending of the surrounding wall. SOLUTION: A reinforcing elastic material 34 formed to have a rectangular cross section using urethane foam or soft rubber is housed and held in a tubular part positioned within the internal bag 8a of a mounting sheet 33, and integrated with the internal surface 8a of the internal bag 8a. Also, the reinforcing elastic material 34 has larger rigidity than each of sheets 31 and 32, and such softness as not causing a feeling of physical disorder on a user. When a user places his/her body on the upper surface of an exterior material and his/her load is applied to a water bag 7, this water bag 7 is deformed, due to his/her load. In this case, however, the surrounding wall of the internal bag 8a is reinforced with the reinforcing elastic material 34, and prevented from being bent at an acute angle, even when repeatedly subjected to his/her load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water bag containing a liquid therein and a mattress device using the water bag.

[0002]

2. Description of the Related Art There are various types of mattress devices, and a water mattress device is known as one of them. In the water mattress device, the liquid material contained in the water bag flows according to the uneven shape of the body of the user who is lying on the upper surface. Therefore, unlike a mattress device including a spring unit, a reaction force is not generated according to the amount of compression, so that a heavy part of a user's body, for example, a buttocks is not strongly pressed. Has advantages.

[0003] If the user is not partly pressed against the body, the mattress device can be used, for example, in beds for sick or elderly people who have to lie down for a long time to prevent so-called bedsores. Can be done. Therefore, recently, attention has been paid to such advantages, and water mattress apparatuses have been widely used.

The water bag is formed of a bag formed in a liquid-tight manner by a flexible sheet such as rubber or synthetic resin. A liquid material is stored inside the bag. The water bag having such a configuration is housed and held in a box-shaped housing body having an open upper surface, and these are covered with an exterior body to constitute the water mattress device. Therefore, when the user lies on the water bag, the liquid in the water bag flows according to the uneven shape of the user's body, and the user is supported without being partially pressed. become.

Incidentally, in the above water bag formed of a flexible sheet, it is inevitable that the upper wall bends and the outer peripheral wall bends and deforms under the load of the user. . There is almost no problem in the curved deformation of the upper wall of the water bag since it is curved with a large curvature.

[0006] However, since the outer peripheral wall is bent at an acute angle, if such bending deformation is repeated, a bending habit is formed in the bent portion, and the portion eventually deteriorates due to fatigue. Therefore, when a large load is applied to the water bag, there is a possibility that the fatigue-degraded portion is damaged, and the liquid material in the water bag leaks out therefrom.

[0007]

As described above, in the conventional water bag, the outer peripheral wall is repeatedly bent by repeatedly receiving the load of the user. Therefore, there is a risk that the liquid material in the water bag leaks from the water bag.

SUMMARY OF THE INVENTION An object of the present invention is to provide a water bag in which the peripheral wall of the water bag is hardly bent at an acute angle to prevent the peripheral wall from being fatigued and deteriorated early, and a mattress using the water bag. It is to provide a device. It is to provide a tress device.

[0009]

According to the first aspect of the present invention, there is provided a water bag having a liquid-tight structure formed by a flexible sheet and containing a liquid material therein. At least a part of the inner peripheral surface or the outer peripheral surface is provided with a reinforcing elastic material for restricting the peripheral wall of the bag from bending.

According to a second aspect of the present invention, in the first aspect of the present invention, the bag is formed by joining and fixing peripheral portions of an upper sheet and a lower sheet. An attachment sheet for attaching the above-mentioned reinforcing elastic material is integrally attached to the joint portion of (1).

A third aspect of the present invention is a water bag having a double structure of an inner bag and an outer bag, wherein a liquid material is accommodated inside the inner bag. A part of the inner bag is provided with a reinforcing elastic material that regulates bending of a peripheral wall of the inner bag, and a detection sensor for detecting a liquid material leaking from the inner bag is provided at an inner bottom of the outer bag. It is characterized by being provided.

According to a fourth aspect of the present invention, there is provided a cushion body having a predetermined thickness, a housing body having a housing portion and provided on an upper surface of the cushion body, and an exterior covering the housing body and the cushion body. A mattress device comprising: a ground; and the water bag according to claim 1 or 3 is housed in a housing portion of the housing.

According to the first aspect of the present invention, since the peripheral wall of the bag body is provided with the reinforcing elastic material, the peripheral wall is prevented from bending at an acute angle, so that the peripheral wall of the bag body deteriorates quickly. Can be prevented.

According to the second aspect of the present invention, the attachment sheet for attaching the reinforcing elastic material is provided at the joint between the upper sheet and the lower sheet forming the bag body. ,
The reinforcing elastic material can be easily and reliably provided on the peripheral wall of the bag body.

According to the third aspect of the invention, it is possible to prevent the peripheral wall of the inner bag from deteriorating at an early stage, and to prevent the liquid material contained therein from leaking out. Can be detected.

According to the fourth aspect of the present invention, since the water bag whose peripheral wall is not easily deteriorated is used, it is possible to provide a mattress device in which liquid does not leak from the water bag.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 3 shows a water mattress device M. The water mattress device M includes a spring unit 2 as a cushion body. The spring unit 2 has a large number of coil springs 3 arranged in a matrix, and upper and lower end surfaces of adjacent coil springs 3 are connected by helical wires 4 along respective predetermined directions.

Protective sheets 5 are laminated on the upper and lower surfaces of the spring unit 2, respectively, and the periphery of each protective sheet 5 is connected to the spring unit 2 by a clip (not shown).

On the upper surface of the spring unit 2, there is provided a rectangular container 6 made of an elastic material such as urethane foam. 3 excluding the lower surface of the container 6
The two side surfaces and the inner bottom surface of the container 6 are covered with a liquid-proof sheet 9 such as vinyl.

The inside of the housing 6 serving as a housing section is provided with 3
Two water bags 7 are housed side by side along the longitudinal direction of the spring unit 2. This water bag 7
As shown in FIG. 1, a bag made of a flexible material such as a rubber sheet or a synthetic resin sheet that does not penetrate a liquid material, and in which a liquid material L such as water or gel is stored. It has an inner bag 8a as a body. The inner bag 8a is housed in the outer bag 8b. The outer bag 8b is formed of a translucent or transparent rubber sheet or a synthetic resin sheet. Therefore, the inside of the outer bag 8b can be visually recognized from the outside.

A first plug 12 communicating with the inside of the inner bag 8a is provided on the upper surface of the water bag 4, and the first plug 12 is closed by a detachable cap 13 in a liquid-tight manner. I can do it. Therefore, the liquid material L can be supplied from the stopper 12 into the inner bag 8a.

Further, the second plug 14 is attached to the outer bag 8b.
The second plug 14 can be opened and closed by a detachable cap 14a. This second
The plug 14 is for bleeding air between the inner bag 8a and the outer bag 8b, thereby preventing air from being interposed between the inner bag 8a and the outer bag 8b. ing. In other words, by bleeding air, the inner bag 8a and the outer bag 8b are brought into close contact with each other, and the stability and heat transfer during use can be improved.

The polymer of the spring unit 2 and the water bag 7 is covered with an outer package 15.
The exterior body 15 includes a lower mirror 16 covering the lower surface of the spring unit 2, an upper mirror 17 covering the upper surface of the water mattress 7, and a town 18 covering the outer peripheral surface of the spring unit 2. Peripheries of the lower mirror fabric 16 and the upper mirror fabric 17 are sewn to the upper and lower ends of the town ground 18 by tapes 19 respectively.

A fastener 21 is provided on the upper part of the above-mentioned town ground 18, so that the upper mirror ground 17 can be opened and closed. Therefore, by opening the fastener 21 and opening the upper mirror 17, the inside water bag 7 can be inspected or replaced.

The bottom outer surface of the inner bag 8a and the outer bag 8b
A detection sensor 22 for detecting the liquid material leaking from the inner bag 8a is provided between the inner surface of the inner bag 8a and the bottom inner surface. The code 23 connected to the detection sensor 22 is led out to the outside through a seal plug 24 (shown in FIG. 1) provided on the side wall of the outer bag 8b, and the control shown in FIG. It is connected to the device 25. The controller 25 is connected to a power supply 26 and a buzzer 27 as alarm means.

As the detection sensor 22, for example, a pair of electrodes 22a are provided at predetermined intervals as shown in FIG. A structure that detects leakage of L is used. Therefore, the liquid material L from the inner bag 8a
Even if the leak is slight, the leak can be reliably detected.

Although the buzzer 27 is used as the alarm means, a display lamp or the like may be used instead of the buzzer 27. In short, the user is surely notified that the liquid L has leaked from the inner bag 8a. Any means can be used.

When the liquid material L leaks from the inner bag 8a and is detected by the detection sensor 22 and a detection signal is input to the control device 25, the buzzer is driven by the drive signal output from the control device 25. 27 is activated. Therefore, the user can know the leakage of the liquid material L from the inner bag 8a.

The inner bag 8a comprises an upper sheet 31 and a lower sheet.
The peripheral portion of the plate 32 is bonded or welded to form a liquid-tight structure. When the peripheral portions of the upper sheet 31 and the lower sheet 32 are joined, an attachment sheet 33 made of a material such as a vinyl chloride film is integrally provided at these joints. The mounting sheet 33 is formed by folding a sheet having a predetermined width into a tube shape, and sandwiching one end in the width direction where both ends are overlapped with the joined portion of the sheets 31 and 32 to form an integral body. And the other end side is an inner bag 8a.
Located inside.

The tube-shaped portion located in the inner bag 8a of the mounting sheet 33 has a reinforcing elastic member 3 formed in a columnar shape with a rectangular cross section made of urethane foam or soft rubber.
4 are housed and held, and are provided integrally on the inner surface of the inner bag 8a. That is, the reinforcing elastic member 34 is attached to the mounting sheet 3
It is provided in a state of being in close contact with the inner surface of the inner bag 8a via 3. The reinforcing elastic member 34 has rigidity that is harder than the sheets 31 and 32 and softness that does not give a user an uncomfortable feeling.

Although the mounting sheet 33 and the reinforcing elastic member 34 are provided over the entire length of the inner peripheral surface of the inner bag 8a, the mounting sheet 33 and the reinforcing elastic member 34 are provided not at the entire circumference but at predetermined intervals in the circumferential direction. You may.

According to the water mattress device having such a configuration, when the user is put on the upper surface of the exterior body 15 and a load of the user is applied to the water bag 7, the water bag 7 is turned on by the user. Deforms under load. That is, the upper sheet 31 is bent and deformed, and the upper sheet 31 and the lower sheet 3 are bent.
The peripheral wall portion of the inner bag 8a formed by the peripheral portion joined to the inner bag 2 is bent and deformed.

If the peripheral wall portion of the inner bag 8a is repeatedly bent and deformed, the peripheral wall portion may be bent and the portion may be easily damaged. However, a reinforcing elastic member 34 is integrally provided on the inner surface of the peripheral wall of the inner bag 8a by a mounting sheet 33. For this reason, since the peripheral wall of the inner bag 8a is reinforced by the reinforcing elastic member 34, it is prevented from being bent at an acute angle even when the load of the user is repeatedly received.

That is, the peripheral wall of the inner bag 8a is
Is prevented from being bent at an acute angle by the hardness and thickness of the peripheral wall, so that it is possible to prevent the peripheral wall from being deteriorated due to a folding habit and easily damaged.

Although the reinforcing elastic member 34 is made of a material having a higher rigidity than the material forming the inner bag 8a, its hardness is such that the user does not feel uncomfortable. Therefore, when the water bag 7 is largely elastically deformed, the user hardly feels uncomfortable or uncomfortable due to the reinforcing elastic member 34 provided in the inner bag 8a.

The outer bag 8b of the water bag 7 is deformed together with the inner bag 8a. However, since the peripheral wall of the outer bag 8b is deformed in substantially the same manner as the peripheral wall of the inner bag 8a,
The peripheral wall b is also prevented from being bent at an acute angle by the reinforcing elastic member 34.

A detection sensor 22 is provided between the inner bag 8a and the outer bag 8b at the bottom of the water bag 7.
Therefore, when the liquid material L leaks from the inner bag 8a, it is detected by the detection sensor 22.

When the detection sensor 22 detects the leakage of the liquid L and the detection signal is input to the control device 25, the buzzer 27 is activated and an alarm is sounded. You can know. That is, even if the leakage of the liquid material L from the inner bag 8a is slight, the inner bag 8 and the outer bag 8
The leak can be reliably detected by the detection sensor 22 provided between the sensor and the sensor b.

Therefore, even if the leakage of the liquid L is slight and the user does not notice that the water bag 7 is hardly deformed, the leakage is detected by the detection sensor 2.
2, the damaged water bag 7 can be replaced or repaired before the inner bag 8a or the outer bag 8b is greatly damaged and the liquid L flows out in large quantities.

FIG. 5 shows a second embodiment of the present invention. In this embodiment, a belt-like mounting sheet is provided at a peripheral portion of the inner bag 8a where the upper sheet 31 and the lower sheet 32 are joined.
One end of the mounting sheet 33a in the width direction is integrally held and fixed, and a reinforcing elastic material 34 is integrally formed on the upper surface of the other end of the mounting sheet 33a located inside the inner bag 8a with the peripheral wall of the inner bag 8a. To be provided.

With such a structure, the peripheral wall of the inner bag 8a is prevented from being bent at an acute angle by the reinforcing elastic material 34, as in the first embodiment, so that the peripheral wall is damaged early. Can be prevented.

FIG. 6 shows a third embodiment of the present invention. In this embodiment, the reinforcing elastic member 34a is bonded and fixed to the outer peripheral surface of the peripheral wall of the inner bag 8a without using the mounting sheet 33. By providing the reinforcing elastic member 34a on the outer surface of the inner bag 8a, not only can the mounting operation be performed easily, but also the mounting sheet 33 becomes unnecessary, so that the configuration can be simplified.

FIG. 7 shows a fourth embodiment of the present invention. This embodiment is the same as the first and second embodiments in that the reinforcing elastic member 34 is provided inside the inner bag 8a, but the mounting sheet 33 covers only the corners of the inner bag 8a. The reinforcing elastic member 34b having a triangular planar shape is provided. The mounting sheet 33 is integrally clamped and fixed to a peripheral portion of the inner bag 8a where the upper sheet 31 and the lower sheet 32 are joined.

Since the inner bag 8a is easily bent due to the peripheral wall being bent particularly at the corners, even if the reinforcing elastic member 34b is provided only at the corners of the inner bag 8a, the inner bag 8a is damaged. Can be prevented for a long time.

In each of the above embodiments, the water bag has a double structure of the inner bag and the outer bag. However, it is a matter of course that the water bag may be constituted by only the inner bag and no outer bag. . Although the spring unit has been described as the cushion body, an elastic material such as urethane foam formed in a plate having a predetermined thickness may be used instead of the spring unit.

In the first, second and fourth embodiments, a reinforcing elastic member is previously attached to the attachment sheet, and the attachment sheet is attached to the inner bag. Of course.

[0047]

According to the first aspect of the present invention, since the reinforcing elastic member is provided on the peripheral wall of the bag, the peripheral wall is restricted from being bent at an acute angle by the load applied to the bag. For this reason, since the peripheral wall of the bag does not have a folding habit and that portion is not repeatedly bent, the peripheral wall is prevented from being deteriorated early.

According to the second aspect of the present invention, the attachment sheet for attaching the reinforcing elastic material is provided at the joint between the upper sheet and the lower sheet forming the bag body. ,
The reinforcing elastic material can be easily and reliably provided on the peripheral wall of the bag body. In addition, if the reinforcing elastic material is provided inside the bag, not only is there no need to secure space for providing the reinforcing elastic material, but also the appearance is good.

According to the third aspect of the present invention, it is possible to prevent the peripheral wall of the inner bag from deteriorating at an early stage and to leak the liquid material contained therein, and to prevent the liquid material from leaking even if it leaks. Can be immediately detected by the detection sensor, so that the liquid material can be prevented from overflowing from the outer bag.

According to the fourth aspect of the present invention, since the water bag whose peripheral wall is hardly deteriorated is used for the mattress device, the liquid material hardly leaks from the water bag, and the performance of the mattress device is improved. Improvement and longer life can be achieved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a water bag according to a first embodiment of the present invention.

FIG. 2 is a partially sectional plan view of the water bag.

FIG. 3 is a cross-sectional view of a mattress device using the same water bag.

FIG. 4 is a block diagram of a control circuit.

FIG. 5 is a sectional view of an inner bag showing a second embodiment of the present invention.

FIG. 6 is a sectional view of an inner bag showing a third embodiment of the present invention.

FIG. 7 is a sectional view of a part of an inner bag according to a fourth embodiment of the present invention.

[Explanation of symbols]

 2 Spring unit 6 Container 7 Water bag 8a Inner bag 8b Outer bag 11 Liquid absorption 31 Upper sheet 32 Lower sheet 33 Mounting sheet 34 Reinforcement elastic material L … Liquid

Claims (4)

[Claims] 1. A water bag comprising a bag formed in a liquid-tight structure with a flexible sheet and containing a liquid material therein, at least a part of an inner or outer peripheral surface of the bag. A water bag is provided with a reinforcing elastic material for restricting the peripheral wall of the bag from bending. 2. The bag body is formed by joining and fixing peripheral portions of an upper sheet and a lower sheet, and the reinforcing elastic member is attached to a joint portion of each of the sheets. 2. The water bag according to claim 1, wherein said mounting sheet is integrally attached. 3. A water bag having a double structure of an inner bag and an outer bag, in which a liquid material is stored inside the inner bag, wherein at least a part of the inner peripheral surface or the outer peripheral surface of the inner bag is A reinforcing elastic member for regulating the bending of the peripheral wall of the inner bag is provided, and a detection sensor for detecting a liquid material leaking from the inner bag is provided at an inner bottom portion of the outer bag. A water bag characterized by the following. 4. A cushion body having a predetermined thickness, a housing body having a housing portion and provided on an upper surface of the cushion body, and an exterior ground covering the housing body and the cushion body. A mattress device, wherein the water bag according to claim 1 or 3 is housed in a housing portion of the housing body.