JPH08299117A - Water mattress device - Google Patents

Abstract

PURPOSE: To provide a water mattress device which can be folded smoothly. CONSTITUTION: The device has a base member 41 which is a rectangular board made of a hard material, a folding part on the base member 41 to fold the base member 41 at least in the longitudinal direction, and a frame 44 mounted around the base member 41 which forms a storage room 45 on the top of the base member 41 and which can be folded together with the base member 41. The device also has a water bag 54 inside the storage room which is a bag made of an elastic liquidproof sheet filled with liquid, and a covering material 62 which covers the bottom of the base member 41, the top of the storage room 45, and the outside of the frame 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water mattress device having a water bag containing a liquid material inside a bag body.

[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. The water mattress device has a water bag containing a liquid, and the liquid contained in the water bag flows according to the uneven shape of the body of the user lying on the upper surface. Therefore, unlike a mattress device including a spring unit, a reaction force is not generated with a strength corresponding to the amount of compression, so that a heavy portion of the user's body, such as the buttocks, is less likely to be strongly pressed. There is.

To prevent so-called bed sores by using the mattress device for a bed for a sick person or an elderly person, who has to lie on his / her back for a long period of time, unless the user is strongly pressed on the body partly. There are things that can be done. Therefore, in recent years, attention has been paid to such an advantage, and a water mattress device has been widely used.

On the other hand, the upper body is raised by itself,
For users who are unable to roll over, the floorboard is divided into multiple parts in the longitudinal direction, one of which is used as the back-raising floor, and the back-raising floor is driven up and down, thereby There is known a so-called wake-up type bed device capable of raising the upper body.

Therefore, if the above water mattress device is used as a mattress for such a wake-up bed device, for a user who cannot wake himself up or cannot turn over by himself, Not only is it possible to raise the upper half of the body by the raised back floor, but also the bed slippage can be prevented due to the characteristics of the water mattress device, which is very convenient.

By the way, generally, a water mattress device has a water bag comprising a bag containing a liquid material. Since this water bag is made of a flexible and liquid-tight sheet, its shape cannot be maintained.

Therefore, in order to maintain the shape of the water bag, at least the bottom plate is formed of a hard material, and a frame is provided at the peripheral portion of the upper surface of the bottom plate, and the inside serves as a housing portion. However, it is housed in the housing part.

However, in order to maintain the shape of the water bag, the water mattress device in which the water bag is housed in the case whose bottom plate is made of a hard material is used as the waking bed device. When placed on a floorboard and used, for example, when the back raising floor portion of the floorboard is raised, the case cannot be smoothly bent according to the raising of the back raising floor portion. Happens.

[0009]

As described above, since the conventional water mattress device has a structure in which it cannot be bent in order to maintain the shape of the water bag, it cannot be used in a back-up type bed device or the like. When it is applied to a bed apparatus having a structure in which a part of a floor plate is undulated as described above, it may not be possible to bend it smoothly.

The present invention has been made based on the above circumstances, and an object of the present invention is to use it in a bed apparatus in which the shape of a water bag can be maintained and a part of a floor plate is driven up and down. An object of the present invention is to provide a water mattress device that can be smoothly bent according to the ups and downs of the floor plate.

[0011]

In order to solve the above-mentioned problems, the present invention provides a base member formed of a hard material in the shape of a rectangular plate, and a base member provided on the base member. A bent portion for bending in at least the longitudinal direction of the longitudinal direction and the width direction, and an accommodating portion formed along the peripheral portion of the base member on the upper surface side of the base member to form the base. Frame formed by a flexible liquid-tight sheet and a frame body that can be folded together with the cover member, and a liquid body is housed therein
It is characterized by comprising a bag and an exterior body covering the lower surface side of the base member, the upper surface side of the accommodating portion and the outer peripheral surface side of the frame body.

[0012]

According to the above construction, the base made of a hard material is used.
Since the water bag maintains a predetermined shape by the base member and the frame body having the housing formed on the upper surface side of the base member, the base member can be smoothly bent by the bent portion. Can be applied to bed equipment, which undulates a part of the floorboard.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 5 shows a water mattress device M of the present invention.
Shows a bed apparatus B in which the bed apparatus B is equipped with a base 1. This base 1 is formed in a rectangular frame shape, and casters 2 with stoppers are provided at the four corners of its lower surface. A mounting frame 3 is provided on the upper surface side of the base 1. This mounting frame 3 is
A vertical drive mechanism 4 including a drive source 4a and a link mechanism 4b driven by the drive source 4a is vertically driven. That is, the above-mentioned installation frame 3
The support height on the base 1 can be adjusted.

A supporting frame is provided above the mounting frame 3.
The frame 5 is supported by brackets 6 which are vertically provided from its four corners. A rotating frame 7 is supported in the frame of the support frame 5 so as to be swingable in the width direction with one end side and the other end side in the width direction serving as fulcrums, respectively. That is, FIG.
As shown in FIG. 3, support rollers 8 are provided on both end portions in the width direction of both end surfaces in the longitudinal direction of the rotary frame 7.

On the other hand, support members 9 are erected on both ends of the support frame 5 in the longitudinal direction. Each support member 9 is formed with a recess 11 opened at the upper end surface, and the support roller 8 is engaged with each recess 11 to support the rotary frame 7. Therefore, the rotary frame 7 can swing in the width direction with the support roller 8 on one end side in the width direction or the support roller 8 on the other end side as a fulcrum.

The support frame 5 is provided with a swing drive mechanism 12 for swinging the rotary frame 7. The rocking drive mechanism 12 includes a drive source 12a and a link mechanism 12b driven by the drive source 12a. The drive source 12a operates to rotate the rotary frame.
The frame 7 is swingably driven in the width direction via the link mechanism 12b.

A floor plate 15 is provided on the rotary frame 7. As shown in FIG. 5, the floor plate 15 is divided into a back raising floor portion 16, a fixed floor portion 17, a first leg floor portion 18 and a second leg floor portion 19 from one longitudinal end of the rotary frame 7. Has been done. Further, each floor portion 16 to 19 is divided in the width direction into central portions 16a to 19a and side portions 16b to 19a rotatably connected to both sides of the central portion only in an upward direction.

The central portion 17a of the fixed floor portion 17 is fixed to the rotary frame 7. The central portion 16a of the back raising floor portion 16 is rotatably connected to one end of the central portion 17a of the fixed floor portion 17. At the other end of the central portion 17a of the fixed floor portion 17, the central portion 18 of the first leg floor portion 18 is provided.
a and the central portion 19a of the second leg floor portion 19 are sequentially rotatably connected.

Since the floor plate 15 is divided into three parts in the width direction, when the rotary frame 7 is driven to swing in the width direction, as shown by a chain line in FIG. The side portions 16b to 19b on the one end in the width direction located in the swinging direction abut on the stoppers 21 provided on the support frame 5 to rotate upward in the opposite direction to the swinging direction. As a result, a user such as an elderly person or a sick person who is lying on the floorboard 15 has the body rotated laterally and the side portion 16 rotated upward.
b to 19b prevent the floor plate 15 from falling.

As shown in FIG. 5, the rotary frame 7 is provided with an undulating drive mechanism 23. The undulating drive mechanism 23 has a box 24 which houses a power transmission mechanism (not shown) therein. A first drive shaft 25 is provided on one end side of the box 24, and a second drive shaft 26 is provided on the other end side thereof with their axes extending along the width direction of the rotary frame 7.

The first arm 2 is attached to the first drive shaft 25.
One end of 7 is fixed. A first roller 28 is rotatably provided at the other end of the first arm 27.
One end of a second arm 29 is fixed to the second drive shaft 26. A second roller 30 is rotatably provided at the other end of the second arm 29. Further, on the side surface of the box 24, the first and second drive shafts 25,
A drive source 31 for rotationally driving 26 is provided. The first roller 28 contacts the lower surface of the central portion 16a of the back raising floor portion 16, and the second roller 30 is the first roller 28.
It contacts the lower surface of the central portion 18a of the leg floor portion 18.

The drive source 31 operates to operate the first and second
The drive shafts 25 and 26 of the motor are driven to rotate, and the first and second
When the frames 27 and 29 are interlocked, the first roller 28 pushes up the back raising floor portion 16, so that the back raising floor portion 16 is shown in FIG.
The second roller 30 pushes up the first leg floor portion 18, so that the second leg floor portion 19 interlocks therewith, and the pair of legs The floor will bend in a V shape.

The water mattress device M is constructed as shown in FIGS. 1 to 4 so that it can be bent according to the bending of the floor plate 15 of the bed device B in the longitudinal direction and the width direction. That is, the water mattress device M includes the case 40. The case 40 has a base member 41 formed in a rectangular plate shape from a hard synthetic resin that does not bend freely, such as polypropylene or nylon. A cushion sheet 42 such as a soft urethane foam is formed on the upper surface of the base member 41.
The sheet heating element 43 is joined via the sheet heating element 43.
A frame body 44, which is molded by an elastic material such as a semi-hard urethane foam so as to be elastically bendable, is provided at the peripheral portion of the upper surface by adhesively fixing the lower surface. As a result, the inside of the frame body 44 serves as a housing portion 45.

As shown in FIGS. 3 and 4, the base member 41 has a hollow shape in which a plurality of space portions 46 separated in the width direction are formed so as to penetrate in the longitudinal direction. hand,
First to third bent portions 47a to 47c in the longitudinal direction
Are formed over the entire length in the width direction, and fourth and fifth bent portions 48a, 48b are formed over the entire length in the width direction in the width direction.

First to third bent portions 47a to 47c
Is formed at a position corresponding to the connecting portion of each floor portion 16 to 19 of the floor plate 15 of the bed apparatus B, and the fourth and fifth bent portions 48a and 48b connect the center portion and side portions of each floor portion. It is formed at a position corresponding to the connecting portion.

Each bent portion comprises a slit formed in the thickness direction of the base member 41, and the first, second, fourth and fifth bent portions 47a, 47b, 48a and 48b are the above-mentioned bases. The member 41 has a slit opened to the lower surface side, and the third bent portion 47c has a slit opened to the upper surface side. Therefore, the base member 41 is
As shown in FIGS. 3 (b) and 4 (b), each floor portion 16 to 19 of the floor plate 15 and the central portion and side portions of each floor portion can be bent according to the undulations.

The bottom surface of the accommodating portion 45 and the frame body 44
The side faces except the bottom face are covered with a waterproof bottom sheet 51. On the upper surface of the bottom sheet 51, a first internal liquid absorbing sheet 52 is provided by being accommodated in a bag 53 formed by a sheet that allows liquid such as nonwoven fabric to pass therethrough.

A plurality of water bags 54 are accommodated on the first liquid absorbing sheet 52, that is, in the accommodating portion 45. In this embodiment, as shown in FIG. 2, a total of four water bags 54, each of which is divided into two in the longitudinal direction and the width direction of the accommodating portion 45, are accommodated. Storage part 4
Two water bags 5 located on one end side in the longitudinal direction of 5
4 is set to have substantially the same length as the back raising floor portion 16 of the bed apparatus B, and two water bags 54 on the other end side are provided.
The length dimension is set shorter than that.

The water bag 54 has an inner bag 55a formed of a waterproof and flexible sheet such as rubber or synthetic resin, and an outer bag 55b containing the inner bag 55a therein. Consists of. The inner bag 55a is provided with a cap 56 for filling the liquid material L therein, and a plurality of strip-shaped partition sheets 5 are provided in the inner bag 55a.
7 is provided by fixing one end and the other end in the width direction to the upper inner surface and the lower inner surface of the inner bag 55a. This partition sheet 5
Numeral 7 prevents the liquid material L contained in the inner bag 55a from rapidly flowing, and regulates expansion of a portion of the water bag 54 which is not loaded when a large load is applied. ing.

As the liquid material L, a liquid such as water, a gel or a super absorbent fiber which is insoluble in water and absorbs the liquid is used. The accommodation section 4
The upper surface of 5 and the outer peripheral surface of the frame 44 are waterproof top seals.
A second bag which is covered with a sheet 57 and is housed in a bag 58 formed by a liquid-permeable sheet such as a non-woven fabric between the outer bottom surface of the inner bag 55a and the inner bottom surface of the outer bag 55b.
A liquid absorbing sheet 59 is provided.

Further, the lower surface of the sheet heating element 43 and the outer surface of the top sheet 57 are covered with a cover sheet 61 having a waterproof sheet formed in a bag shape. As a result, even if the liquid L leaks from the inner bag 55a of the water bag 54, the liquid L is absorbed by the second liquid absorbing sheet 59.

The water bag 54 has an inner bag 55a and an outer bag 5.
Since it has a double structure with 5b, the liquid L leaking from the inner bag 55a is unlikely to leak to the outside of the outer bag 55b, but the liquid L is removed from the outside by puncturing the inner bag 55a with a sharp object. When the liquid L leaks to the outside of the bag 55b, the liquid L
Is absorbed by the liquid absorbing sheet 52. Further, the accommodating portion 45 is covered with the top sheet 57, and the water bag 54 is also covered with the covering sheet 61.
With these structures, the liquid L in the inner bag 55a can be prevented from leaking to the outside.

The first and second liquid absorbing sheets 52,
As 59, a highly liquid-absorbent resin powder such as a vinyl acrylate alcohol copolymer or a sodium acrylate copolymer, or the one obtained by binding the powder resin to a non-woven fabric is used.

In this way, the case 40 accommodating the water bag 54 is covered with the exterior body 62.
The exterior body 62 is composed of a lower mirror surface 63 that covers the lower surface of the case 40, a gusset surface 64 that covers the outer peripheral surface, and an upper mirror surface 65 that covers the upper surface. The peripheral portions of the lower mirror surface 63 and the upper mirror surface 65 are sewn together by a tape 66. An external liquid absorbing sheet 67 is provided on the inner surface of the upper mirror surface 65. The external liquid absorbing sheet 67 can absorb a liquid that enters the inside of the water mattress device M from the upper surface, for example, sweat of a user. The exterior body 62 is formed of an elastic cloth so that the water mattress device M can be bent according to the ups and downs of the floor plates 16 to 19 of the bed device B.

Fasteners 68 are provided in the lower peripheral portion of the town 64 so that the peripheral portion of the exterior body 62 can be opened. One end of a tongue piece 71 is integrally sewn to the tape 66 on the lower side of the exterior body 62. This tongue 71
A velvet fastener 72 is provided on the other end side of the. The velvet fastener 72 is the covering sheet 61.
Is attached to a velvet fastener 73 provided on the lower surface of the.

By opening the fastener 68 and removing the tongue piece 71 from the covering sheet 61, the base member 41 and the cushion sheet 42 can be taken out from the exterior body 62. Therefore, the cushion sheet 42 can be replaced and the base member 41 can be maintained and inspected.

The water mattress device M having the above structure is placed on the floor plate 15 of the bed device B as described above. The floor plate 15 of the bed apparatus B is driven up and down so that the upper body of the user lying on the mattress apparatus M can be raised when eating, for example, or the body can be rotated in the left-right direction alternately to prevent bed sores. it can.

When the user's upper body is to be raised, as shown by the chain line in FIG. 5, the back raising floor portion 16 of the floor plate 15 is driven in the raising direction, and the first leg floor portion 18 is raised in the raising direction. By driving, it bends in a substantially V-shape with the second leg floor portion 19.

When each floor is raised in this manner, the water mattress device M bends as indicated by the chain line in FIG. This water mattress device M
Holds the water bag 54 accommodated in the accommodating portion 45 by the rigid synthetic resin base member 41 and the frame body 44 in a predetermined shape.

However, since the base member 41 is formed with the first to third bent portions 47a to 47c along the width direction at the portions corresponding to the connecting portions of the floor portions 16 to 19, the above-mentioned portions are formed. When the back raising floor portion 16 and the first and second leg floor portions 18 and 19 are raised, the portions corresponding to the connecting portions of the floor portions are bent according to the raising.

FIG. 3 (a) shows a state before the base member 41 is bent, and FIG. 3 (b) shows a bent state.
That is, when the back raising floor portion 16 rises, the first bent portion 47a bends so as to open downward, and the first leg floor portion 18 rises, so that the second bent portion 47b also moves downward. Bend to open. Furthermore, the second leg floor 19 is the first
The third bent portion 47c is bent upward by opening in the direction opposite to that of the leg floor portion 18.

Therefore, when the user's upper body is to be raised, the water mattress device M can be reliably operated according to the ups and downs of the floor portions 16 to 19 of the floor plate 15 even though the base member 41 is rigid. In addition, it is bent smoothly and does not rise significantly above the floor plate 15.

When the user on the water mattress device M is rotated in the left-right direction, the rotary frame 7 is swung in the left-right direction. As a result, the side portions 16b to 19b of the floor portions 16 to 19 of the floor plate 15 are bent at a predetermined angle with respect to the central portions 16a to 19a, as shown by the chain line in FIG. If the side portions 16b to 19b are bent, the water mattress device M is bent from the middle portion in the width direction according to the bending.

The base member 41 of the water mattress device M is shown in FIG. 4 at a portion corresponding to a connecting portion between the central portions 16a to 19a and the side portions 16b to 19b of the floor portions 16 to 19.
As shown in (a) and (b), a fourth bent portion 48a and a fifth bent portion 48b are formed over the entire length in the longitudinal direction.

Therefore, as shown in FIG. 6, if the rotary frame 7 is rotated counterclockwise, the base member 41 is rotated.
4a, the one end side in the width direction changes from the flat state shown in FIG. 4 (a) to the state in which the fourth bent portion 48a opens downward as shown in FIG. 4 (b) in conjunction with the bending of the side portions 16b to 19b. It will bend. Further, when the rotary frame 7 rotates clockwise, the side portions 16b to 19b on the other end side in the width direction bend in the upward direction, and the other end side in the width direction of the base member 41 is bent to the fifth side. The bent portion 48b is bent and interlocked. Therefore, the water mattress device M is smoothly bent not only in the longitudinal direction but also in the width direction.

Case 4 of the water mattress device M
The water bag 54 accommodated in the 0 is a portion corresponding to the length of the back raising floor portion 16 in the longitudinal direction of the floor plate 15, the fixed floor portion 17 and the first and second leg floor portions 18, 19.
Is divided into two parts corresponding to the length of.

Therefore, when the back-raised floor 16 is raised, the water bag 54 raised by the back-raised floor 16 is not bent from the midway portion. Water mattress device M
Can be smoothly bent.

When the first and second leg floor portions 18 and 19 are driven or the side portions 16b to 19b of each floor portion are driven, the water bag 54 is bent, but in that case. Since the degree of bending is smaller than that of the back raising floor portion 16, there is no great resistance to bending the water mattress device M.

In the above-mentioned embodiment, the water bag accommodated in the accommodating portion is divided into four, but the number is not limited at all, and it may be one without division. Alternatively, it may be plural in only the longitudinal direction, for example, divided into two or three, or divided into four according to the number of floor portions of the floorboard. Further, although it is not necessary to divide in the width direction, it may be divided into three in correspondence with the center and the side of each floor.

Further, the base member is formed with a bent portion so that it can be bent in both the longitudinal direction and the width direction, but when applied to a bed apparatus having only a back raising function, the above-mentioned base member is used. -A bent portion may be formed along a width direction at a predetermined position in the longitudinal direction so that the curved member can be bent only in the longitudinal direction.

[0051]

As described above, according to the water mattress device of the present invention, the base member having the accommodating portion for accommodating the water bag is formed on the upper surface side, and the shape of the water bag is maintained. To this end, the base member is formed of a hard material, and the base member is provided with a bent portion for bending the base member in at least the longitudinal direction of the longitudinal direction and the width direction.

Therefore, the shape of the water bag accommodated in the accommodating portion can be maintained by the hard base member, and the water mattress device having the above-mentioned construction is driven by the floor plate so that the bed device is raised and lowered. When applied to, the base member can be smoothly bent from the bent portion in accordance with the undulating drive of the floor plate. In other words, the water mattress device can be applied to a bed device in which a floor plate is driven up and down.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a water mattress device showing an embodiment of the present invention.

FIG. 2 is a plan view showing a case where the water bag is housed in the case.

FIG. 3 (a) is a longitudinal sectional view taken along the longitudinal direction showing the case in which the case is also flat, and FIG. 3 (b) is a sectional view taken along the longitudinal direction showing the case in which the case is also bent.

FIG. 4A is a vertical cross-sectional view along the width direction showing the case in which the case is also flat, and FIG. 4B is a cross-sectional view along the width direction also showing the case in which the case is bent.

FIG. 5 is a side view of a bed device in which the water mattress device of the present invention is used.

FIG. 6 is a side view for explaining the rotation of the rotary frame of the bed apparatus.

[Explanation of symbols]

41 ... Base member, 44 ... Frame body, 45 ... Housing part, 47a
-47c ... 1st thru | or 3rd bending part, 48a, 48b
... Fourth and fifth bent portions, 54 ... Water bag, 6
2 ... Exterior body.

Claims (1)

[Claims] 1. A base member formed of a hard material in the shape of a rectangular plate, and for bending the base member provided on the base member in at least the longitudinal direction of the longitudinal direction and the width direction. And a frame body that is provided along the peripheral portion of the base member, forms a housing portion on the upper surface side of the base member, and is foldable together with the base member, and a flexible liquid. A water bag which is formed in a bag shape by a dense sheet and accommodates a liquid material therein and is provided in the accommodating portion, a lower surface side of the base member, an upper surface side of the accommodating portion and the frame. A water mattress device, comprising: an exterior body covering the outer peripheral surface side of the body.