JPH0923949A - Water bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily get on/off a bed and stand on the bed by providing an air mat capable of adjusting an air pressure inside on a position where the waist part of a lying user is in contact. SOLUTION: For this water bed 1, a liner 5 composed of a water-tight flexible sheet is provided on a bed frame body 4 formed in a box shape by wood or the like and a water bag 2 is mounted on it. A heater 6 for raising the temperature of water in the water bag 2 to an appropriate temperature is provided. The water bag 2 is composed by ejecting a liquid object such as water or the like inside the water bag 2 through a plug. Further, for the water bed 1, the air mat 3 capable of adjusting the air pressure inside is provided at the position which the waist part of the lying user is in contact with. The air pressure inside the air mat 3 is raised by ejecting air into the air mat 3 by a motor-driven type pump or a manual pump or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water bed, and more particularly to a water bed that eliminates the feeling of instability when getting up on the bed.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, a box-shaped bed frame 4 made of wood or the like is provided with a liner 5 made of a watertight flexible sheet, on which a liquid such as water is placed. A water bed 1 on which one or more water bags 2 in which objects are enclosed are placed is used as bedding or the like for medical use or for general households.

[0003]

SUMMARY OF THE INVENTION In the above water bed, the cushioning properties of the water bag in which the liquid material is enclosed allow the body pressure to be evenly distributed when the user reclines to obtain an ideal sleeping comfort. It is what is done. On the other hand, when getting on the bed, getting up on the bed,
When getting out of the bed, the hand on the bed sinks into the water bag, which does not provide good support and gives the user a feeling of instability. Further, it has a drawback that it gives the user a feeling of depression of the waist when lying down, as compared with a bed in which a synthetic resin foam or a spring is generally used as a cushion.

In order to solve the former drawback, a water bed as disclosed in Japanese Utility Model Publication No. 6-26220 has been proposed. FIG. 6 is a cross-sectional view of a water bed according to an embodiment of the present invention as seen from the vertical direction. Support edges 8 are provided on both side edges of the bed frame 4 in the vertical direction.
The support edge 8 is a support edge base 9 made of a cushioning synthetic resin foam in which an inclined surface inclining inward is formed so that the thickness gradually increases from the upper edge toward the lower edge, and the support edge base. An airtight synthetic resin sheet 10 is wrapped around the outer circumference of the sheet 9. The synthetic resin sheet 10 is provided with an air plug (not shown) that adjusts the air pressure in the support edge 8, and the hardness of the support edge 8 can be increased by reducing the air pressure from the air stopper. It is something.

The proposed water bed supports the body satisfactorily by touching the supporting edge 8 having an increased hardness, and can get on and off the bed relatively easily as compared with the conventional water bed. Is. However, when the user gets up on the bed, his / her body cannot be well supported because the vicinity of the waist where the hand is usually held is the water bag 2 itself as in the conventional case. Even if a hand is placed on both side edges where the supporting edge 8 having an increased hardness is present, both hands are too wide to apply force, and it is not easy to stand up on the bed.

Further, the above water bed is designed to increase the hardness of the support edge 8 by compressing the support edge base 9 by depressurizing the airtight synthetic resin sheet 10 enclosing the support edge base 9. Therefore, since the volume of the cushioning synthetic resin foam, which is the supporting edge base 9, is reduced,
The surface of the supporting edge 8 is lower than the upper edge of the bed frame 4, which is inconvenient when getting on and off the bed.

Furthermore, the above-mentioned water bed is provided with a special support edge 8 which inclines downward so that the wall thickness gradually increases from the upper edge toward the lower edge. In order to support the body satisfactorily by touching the support edge 8, the support edge 8 had to be large. Therefore, the handling is inconvenient and the airtight synthetic resin sheet 10 is provided.
There was a drawback that it took time to depressurize the inside.
Further, there is a drawback that it is difficult to wrap the synthetic resin sheet 10 according to the shape of the supporting edge substrate 9 while maintaining airtightness. Moreover, since the shape of the water bag 2 placed in the support edge 8 must also be formed to have an inverted trapezoidal cross section corresponding to the shape of the support edge 8, it becomes difficult to manufacture the water bag 2 itself and the water bed It had a defect that the original cushioning property of the above is impaired.

On the other hand, in order to solve the latter drawback described above, a water bed as disclosed in Japanese Utility Model Publication No. 6-8758 has been proposed. FIG. 7 is a cross-sectional view showing an embodiment of the present invention, in which a lumbar support mat 11 having buoyancy is provided inside the water bag 2 at a position corresponding to the waist when the user of the water bed reclines.

The proposed water bed is intended to prevent the waist from sinking due to the buoyancy of the lumbar support mat 11 provided inside the water bag 2.

However, in the above water bed, since the lumbar support mat 11 is provided in the water bag 2, the lumbar support mat 11 cannot be moved. Therefore, depending on the size of the user's body, the lumbar support mat 11 may not be located at the waist equivalent position. Therefore, not only is there a drawback that it is not possible to sufficiently prevent the waist from sinking, but it is possible to prevent the sinking of parts other than the waist, and rather worsen the sleeping comfort.

The present invention has been made against the background of the above-mentioned prior art. It eliminates the instability when getting on the bed, getting up on the bed, or getting off the bed, and, if necessary, the lumbar region. It is an object of the present invention to provide a water bed that can prevent the sinking of water.

[0012]

According to the water bed of the present invention, at least one waist of a user lying down is in contact with a water bed in which one or more water bags containing a liquid substance are placed in a bed frame. position,
It is characterized in that an air mat whose internal air pressure is adjustable is present.

It is desirable that the air mat be provided over the entire width of the water bed in the lateral direction. Further, the air mat is attached to the water bag or / and the bed frame by the fittings provided on the air mat, respectively, or by the belt-shaped member integrally formed with the air mat, the lateral side of the water bag or the water bed is attached. It may be attached so as to go around the outer circumference in the direction. In this case, it is desirable that it be detachable and movable. Further, the above air mat is not limited to being formed separately from the water bag, and may be formed integrally with the surface of the water bag.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in more detail with reference to the drawings. FIG. 1 is an explanatory view showing a state when a person is not lying down on the water bed according to the embodiment of the present invention.

The water bed shown in FIG. 1 is such that a liner 5 made of a watertight flexible sheet is provided on a bed frame 4 formed of wood or the like in a box shape, and a water bag 2 is placed thereon. Is. Reference numeral 6 in the figure denotes a heater for adjusting the water temperature in the water bag 2 to an appropriate temperature. The water bag 2 is formed by injecting a liquid substance such as water into the water bag 2 through a spout (not shown).

The water bag 2 is a bag formed of a watertight flexible sheet, and any bag can be used as long as it has been conventionally used as a water bag for a water bed. . Specifically, for example, a synthetic resin sheet such as a vinyl chloride sheet is used to form a bag shape or a rectangular parallelepiped shape by means of high frequency fusion or the like.

The water bag 2 can be formed into a bag by stacking two sheets and joining the peripheral edges by high frequency fusion or the like. In this case, by simply joining the peripheral edges, the center portion of the water bag will bulge larger when the liquid substance is injected, resulting in an unstable shape, so that the bulge in the center portion does not become too large. It is also possible to provide a plurality of hanging cloths for controlling the bulge. However, even when the hanging cloth is provided, the bulging of the hanging cloth existing portion is suppressed more strongly than the other portions, so that the surface of the water bag becomes uneven and the usability is impaired. Therefore, the water bag 2 used in the present invention is preferably a rectangular parallelepiped water bag obtained by the method proposed in JP-A-3-1813.

The liquid material to be sealed in the water bag 2 is typically water, but it is also possible to use a liquid having good temperature retention such as a glycerin solution or a gel material. I can. In addition, it is used in the water bag 2 as necessary to prevent rocking of a liquid substance such as injected water as proposed in Japanese Utility Model Laid-Open No. 2-45046. A cushioning member made of non-woven fabric or the like can be included.

The water bed of the present invention is not limited to one having one water bag 2 mounted thereon as shown in FIG. 1, but a plurality of water bags as proposed in Japanese Utility Model Publication No. 59-5409. It may be the one on which is mounted.

In the water bed 1 of the present invention, an air mat 3 capable of adjusting the internal air pressure is present at a position where the waist of a reclining user contacts. Air mat 3
The air pressure in the inside is increased by injecting air into the air mat 3 by an electric pump, a manual pump or the like (not shown). The air mat 3 with increased air pressure has rigidity itself. The air pressure in the air mat 3 is reduced by bleeding air from the air mat 3 through a valve or the like (not shown).

When the user gets on the bed, gets up on the bed, or gets off the bed, air is injected into the air mat 3 existing at the waist of the user to increase the air pressure of the air mat and By touching the hands, the attached hands do not sink into the water bag 2, and the body can be well supported without feeling instability. Therefore, an operation such as getting on and off the bed and getting up on the bed can be easily performed. Further, when lying down, if the air pressure is appropriately lowered, the feeling of use of the water bed is not impaired, and the air mat 3 also functions as a lumbar support for preventing the waist from sinking. Furthermore, by completely bleeding the air inside the air mat 3, the sheet forming the surface of the water bag and the air mat 3 are substantially integrated, so that the use is almost the same as a conventional water bed that does not have an air mat. You can get a feeling.

The air mat 3 is, for example, 2
It is possible to use, for example, a stack of airtight flexible sheet materials, at least the peripheral edges of which are joined by high-frequency fusion bonding or the like, and a hanging cloth for restricting bulging is provided as necessary. Further, it is necessary to use a sheet material having a small elongation as the sheet material forming the air mat 3 so that the air mat 3 has sufficient rigidity when the internal air pressure is increased. As such a sheet material,
A synthetic resin sheet or a rubber sheet, which is reinforced with a cloth and has a minimum elongation, can be used. For example, vinyl leather, vinyl tarpaulin, and rubberized cloth are preferable. The air mat 3 is an air bag body made of an airtight synthetic resin sheet or the like obtained by the same method as described above,
Alternatively, it is made of a sheet material in which the airtight air sac obtained by the blow molding method, the vacuum molding method, the slush molding method, the dip molding method, the injection molding method, or the like is reinforced with the cloth or the above cloth to minimize the elongation. It can also be stored in the cover body. The air mat 3 thus constructed can be the same as the air mat formed of the sheet material whose elongation is minimized. By forming the air matte 3 in this way, the fabric is prevented from swelling more than necessary when a large amount of air is injected, so the air pressure inside the air matte 3 rises and the air matte 3 has sufficient rigidity. Will have.

The size of the air mat 3 is not particularly limited as long as the above-mentioned object can be achieved, but it is desirable that the air mat 3 is formed so as to exist over the entire width in the lateral direction. By doing so, the above object can be sufficiently achieved even when the recumbent position of the user is changed.

Any means can be used to attach the air mat 3 to the water bed 1 as long as it can fix the air mat 3, but the bed frame 4 and / or the water bag 2, or both of them. It is preferable that each of the air mats 3 is provided with a fitting such as a velvet fastener, a snap, and a button so that it can be detachably mounted. At this time, the air mat 3 is preferably attached so as to be movable. By doing so, the air mat 3 can be attached to an appropriate place according to the size of the user's body.

The air mat 3 does not use the above-mentioned attachment, but is formed by the belt-shaped member 7 integrally formed with the air mat 3 as shown in FIG. You may attach so that it may be wound around the outer periphery. In FIG. 2, the water bag 2
The example attached so that it may be wound around is shown. As the belt-shaped member 7 at this time, a cloth, a synthetic resin sheet, or a laminated product of these can be used. Also at this time, it is desirable that the position of the air mat 3 can be moved, as in the case of using the attachment.

The air mat 3 may be formed of a plurality of independent columnar air chambers arranged in the lateral direction of the bed, and the air pressure of each air chamber may be independently adjustable. With this configuration, the air chamber into which the air is to be injected can be selected, and it becomes possible to match the size of the user's body as in the case where the air mat 3 can be moved. This will be specifically described as shown in FIG. That is, when the air mat 3 is provided with five independent air chambers, the air chambers 3a, 3b, 3c
Inject air only into the air chambers 3d and 3e, and inject air into the air chambers 3c ', 3d' and 3e ', and inject air into the air chambers 3a' and 3b '. If not, it is apparently equivalent to the air mat 3 having moved to the right side in the figure.

The air mat 3 is not limited to the one formed separately from the water bag 2 as described above,
As shown in FIG. 3, for example, it is formed by joining an airtight sheet such as a synthetic resin sheet on the surface of the water bag 2 by a method such as high frequency fusion, heat welding or an adhesive, and providing an air inlet. Further, it may be formed integrally with the surface of the water bag.

When the air mat 3 is integrally provided on the surface of the water bag as described above, the air mat 3 cannot be moved. However, even at this time,
Similar to the case where the air mat 3 can be moved by forming a plurality of independent columnar air chambers in parallel with each other in the lateral direction of the bed, and allowing each air chamber to independently adjust the air pressure. The effect of is obtained. If not,
Since the air mat 3 is formed on the surface of the water bag whose position can be visually recognized, the water bed of the present invention can be obtained by allowing the user to lie down at an appropriate position according to the position of the air mat 3. It does not impair the effect it has. The same applies to the case where the air mat 3 is formed separately from the surface of the water bag and is attached so as not to move.

[0029]

EFFECTS OF THE INVENTION The water bed of the present invention has an internal position at the position where the waist of a reclining user is in contact, which is the most stable position for supporting the body by holding a hand on the bed when getting up on the bed. An air mat with adjustable air pressure was provided. Therefore, when getting on and off the bed, or when the user gets up, the body can be sufficiently supported by raising the air pressure and holding the hands on the air mat, which has rigidity, so that the person can get on and off the bed. Easy to get up on the bed.

Further, by appropriately lowering the air pressure of the air mat, it is possible to prevent the waist from sinking, as in the case of the water bed provided with the conventional lumbar support mat, while hardly impairing the excellent cushioning property of the water bed. You can

Furthermore, when the air of the air mat is completely deflated, it is substantially integrated with the sheet forming the surface of the water bag, so that it is possible to maintain the original excellent cushioning properties of the water bed. Is. Further, by allowing the air mat to be removed, the air mat can be removed and used as a conventional water bed when unnecessary.

Furthermore, by making the air mat movable, the air mat can be present at a position where the waist of a reclining user comes into contact, regardless of the height of the user. Even if the air mat is not movable, the air mat can be formed by a plurality of independent column-shaped air chambers that are arranged in the lateral direction of the bed, and the air pressure of each air chamber can be adjusted independently. Then, the same effect as when the air mat can be moved can be obtained by selecting the air chamber into which the air should be injected.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a water bed of the present invention.

FIG. 2 is a cross-sectional view of an embodiment of the water bed of the present invention in which an air mat is attached by a belt-shaped member so as to be wound around a water bag, as viewed in the vertical direction.

FIG. 3 is a cross-sectional view showing another embodiment of the water bed of the present invention.

FIG. 4 is a view showing an operation of the water bed of the present invention in which an air mat is formed by a plurality of independent columnar air chambers arranged in the lateral direction and the air pressure of each air chamber can be independently adjusted. FIG. 6 is a partial cross-sectional view for explaining FIG.

FIG. 5 is a cross-sectional view showing an example of a conventional water bed.

FIG. 6 is a cross-sectional view of an example of a conventional water bed in which supporting edges are provided on both side edges in the vertical direction inside a bed frame, as seen from the vertical direction.

FIG. 7 shows a conventional waterbed, which is located at a position corresponding to the waist when the user of the waterbed reclines,
It is sectional drawing which shows one Example which provided the lumber support mat which has buoyancy in the inside of a water bag.

[Explanation of symbols]

 1 Water Bed 2 Water Bag 3 Air Mat 4 Bed Frame 5 Liner 6 Heater 7 Band-shaped Member 8 Support Edge 9 Support Edge Base 10 Synthetic Resin Sheet 11 Lumber Support Mat

Claims (9)

[Claims] 1. In a water bed in which one or more water bags containing a liquid substance are placed in a bed frame, the internal air pressure can be adjusted at a position where at least the waist of a user lying down is in contact. A water bed characterized by the presence of an air mat. 2. The water bed according to claim 1, wherein the air mat is provided at least over the entire width of the water bag in the lateral direction. 3. The water bed according to claim 1 or 2, wherein the air mat is detachably attached to the water bag and / or the bed frame by attachments provided on the air mat, respectively. 4. The water bed according to claim 1 or 2, wherein the air mat is attached by a belt-shaped member formed integrally with the air mat so as to surround the outer circumference of the water bag or the water bed in the lateral direction. . 5. The water bed according to claim 3, wherein the air mat is movably attached. 6. The water bed according to claim 1, wherein the air mat is integrally provided on the surface of the water bag. 7. The air mat has a plurality of independent cylindrical air chambers arranged in parallel in the lateral direction of the bed, and each air chamber is capable of independently adjusting the air pressure.
6. The water bed according to any one of 6 above. 8. The water bed according to claim 1, wherein the air mat is formed of a sheet material made of an airtight sheet reinforced with a cloth. 9. The water bed according to any one of claims 1 to 7, wherein the air mat is housed in a cover body formed of cloth or a sheet material in which an airtight air bag is reinforced.