JP3562958B2 - Mattress equipment and bed equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mattress device used for a bed device for nursing a user who is difficult to get up by himself and a bed device thereof.
[0002]
[Prior art]
In a bed apparatus for a sick person, a so-called wake-up bed apparatus may be used to assist a patient with reduced physical strength to raise his / her upper body when eating. The wake-up bed device divides a floor plate provided on an upper surface of a bed frame into a plurality of floor plates in a longitudinal direction of the bed frame, and is a floor plate portion corresponding to the upper body of the user. In addition, the back floor portion can be driven up and down by a drive mechanism.
[0003]
Therefore, if the back floor portion is driven in the upright direction, the patient lying on the floor plate via the mattress device can raise the upper body with little physical strength.
[0004]
Conventionally, the floor plate body has a fixed floor plate portion fixed to the bed frame, in addition to the back floor plate portion, and one end of the back floor plate portion is rotatably connected to the fixed floor plate portion. It was composed.
[0005]
Therefore, when the back floor plate is driven by the drive mechanism in the upright direction in order to raise the patient's upper body, the back floor plate pivots up in the upright direction about the connection with the fixed floor plate as a fulcrum.
[0006]
When the back floor plate is turned up in the upright direction, the mattress device placed on the floor plate bends while pressing the back surface of the patient. Since the mattress device has a predetermined thickness, when it is bent in accordance with the standing of the back floor plate portion, a compressive force is generated on the upper surface inside the curve along the inside in the longitudinal direction, and the lower surface serving as the outer surface. Generates a tensile force along the outside in the longitudinal direction.
[0007]
Thereby, the compression force generated on the upper surface of the mattress device also acts on the back surface of the patient whose upper body is raised while being pressed by the upper surface of the mattress device, and the back is pressed downward by the compression force, Since the buttocks and thighs are pressed backward, the body, especially the abdomen, may be compressed.
[0008]
It is good if the patient has physical strength and can lift the back of the body from the top of the mattress device by himself and remove the compressive force acting on the back, but if the patient does not have enough physical strength, apply the compressive force by himself. It may not be able to be removed, in which case the pain to the patient may be greater.
[0009]
[Problems to be solved by the invention]
As described above, in the conventional wake-up type bed device, when the back floor plate portion is raised in the rising direction, the upper surface of the mattress device placed on the floor plate is bent while pressing the back surface of the patient, and the The compressive force generated longitudinally inward on the top surface of the mattress device strongly acts on the back of the patient.
[0010]
For this reason, the compression force applied to the back of the user cannot be removed unless the user lifts the body from the mattress device by himself, and the abdomen of the body may be compressed when raising his / her back, which may cause discomfort to the user. When the user is a sick person or an elderly person, the body is lifted from the upper surface of the mattress device, and if the compressive force applied to the body cannot be removed by itself, the pain given to the user may be increased.
[0011]
The present invention has a structure that can be extended and contracted in the longitudinal direction, and is used in a back-up type bed apparatus, and expands and contracts according to the ups and downs of a movable floor plate section, thereby pressing the abdomen of a user particularly when raising the back. It is an object of the present invention to provide a mattress device which can be used so as not to cause pain.
[0012]
The present invention uses a mattress device that can be extended and contracted in the longitudinal direction and allows the mattress device to be extended and contracted in accordance with the ups and downs of the movable floor plate, thereby causing pain such as pressing the abdomen of the user, especially when raising his / her back. The present invention is to provide a bed device which does not give a bed.
[0017]
[Means for Solving the Problems]
The invention according to claim 1 is a bed device capable of raising the user's upper body,
A bed frame,
A floor plate body which is divided into a plurality of floor plate portions along the longitudinal direction of the bed frame, adjacent floor plate portions are rotatably connected to each other, and a floor plate portion located at a central portion is fixed to the bed frame,
A back-up drive mechanism for raising and lowering a movable floor plate portion rotatably connected to one end of a fixed floor plate portion of the floor plate body fixed to the bed frame;
A mattress device in which an elastic portion that can be extended and contracted along the longitudinal direction is formed in the middle portion in the longitudinal direction while being placed on the floor plate body,
When the movable floor plate portion is rotated in the upright direction, the stretchable portion of the mattress device is extended, and the portion of the mattress device located on the movable floor plate portion is slid in the ascending direction and rotated in the falling direction. A sliding means for sliding a portion of the mattress located on the movable floor plate portion in a downward direction to contract the elastic portion.
[0018]
According to a second aspect of the present invention, in the first aspect of the present invention, the back lifting mechanism includes a rail provided along a longitudinal direction on a lower surface side of the movable floor plate portion, and a roller for rolling the rail at a tip portion. Arm, having a drive source for raising and lowering the movable floor plate portion by the roller that rolls along the rail by rotating this arm,
The sliding means includes a band-shaped member provided over the upper surface side and the lower surface side of the movable floor plate portion, and first connecting means connecting a portion of the mattress device located on the movable floor plate portion to the band-shaped member. A second connecting means for connecting the band-shaped member and the arm and sliding the band-shaped member along the movable floor plate in accordance with the rotation of the arm.
[0022]
According to the first aspect of the present invention, the mattress device placed on the floorboard is expanded and contracted in conjunction with the ups and downs of the movable floorboard of the floorboard. Even if the mattress device is bent with the rise of the user, it is possible to prevent the back surface of the user from being pressed.
[0023]
According to the second aspect of the present invention, the mattress device can be expanded and contracted by using the back-raising mechanism that raises and lowers the movable floor plate portion of the floor plate, so that a dedicated mechanism for expanding and contracting the mattress device is not required.
[0024]
BEST MODE FOR CARRYING OUT THE INVENTION
The bed apparatus shown in FIG. The bed frame 1 is provided on a base frame 2 by a link mechanism 3 so as to be vertically movable. The link mechanism 3 is driven by a drive source 4 constituting a vertical drive mechanism. Thereby, the bed frame 1 can be adjusted in height.
[0025]
A headboard 5a is provided upright at one longitudinal end of the bed frame 1, and a footboard 5b is provided at the other end. Further, a floor plate 6 is placed on the bed frame 1. The floor panel 6 is divided into five floor panels, and a fixed floor panel 7a located at the center in the longitudinal direction is fixed to the bed frame 1.
[0026]
A waist floor plate 7b and a back floor plate 7c are sequentially rotatably connected to one end of the fixed floor plate 7a, and a first leg floor 7d and a second leg floor 7e are connected to the other side. Are sequentially rotatably connected.
[0027]
A back raising mechanism 11 is provided on the lower surface side of the bed frame 1. The back lifting mechanism 11 includes a drive source 13 that drives the drive shaft 12 to move forward and backward in the axial direction. A rotating shaft 14 is rotatably mounted on the bed frame 1 along the width direction, and a connecting rod 15 is provided at one end of the rotating shaft 14 with one end fixed thereto. The other end of the connecting rod 15 is rotatably connected to the tip of the drive shaft 12.
[0028]
The base ends of a pair of arms 16 (shown in FIG. 2) are fixed to both ends of the rotating shaft 14. As shown in FIG. 3, a pair of rollers 17 is rotatably provided at the tip of each arm 16.
[0029]
As shown in FIG. 2, a pair of rails 18 having a U-shaped cross section are provided along the longitudinal direction of the floor plate 6 at both ends in the width direction on the lower surface of the back floor 7 c of the floor plate 6. A pair of rollers 17 provided at the tip of the arm 16 are rotatably engaged with the rails 18, respectively.
[0030]
Therefore, if the drive shaft 12 is driven forward and backward by the drive source 13 of the back lifting mechanism 11, the arm 16 is rotated, and the rotation drives the back floor plate portion 7 c up and down via the rail 18. Will be.
[0031]
A mattress device 21 is placed on the floor plate 6. As shown in FIGS. 5A to 5C, the mattress device 21 includes a rectangular plate-shaped cushion body 22 and a bag-shaped exterior body 23 covering the cushion body 22. The exterior body 23 can be freely opened and closed on one side by a fastener 23b. As shown in FIGS. 5 (a), 5 (b) and 6, the cushion body 22 has a three-layer structure in which a low repulsion elastic outer layer material 22b is bonded and fixed to upper and lower surfaces of a sheet-like elastic core material 22a having cushioning properties. It has a structure. In this embodiment, a foamed elastic material such as urethane foam is used as the elastic core material 22a and the elastic armoring material 22b.
[0032]
An elastic portion 24 is formed in the middle of the cushion body 22 in the longitudinal direction. The elastic portion 24 is formed by using a strip portion 25 as a deformable portion formed in the middle portion of the cushion body 22 in the longitudinal direction and the outer body 23 as an elastic fabric.
[0033]
The strip portion 25 is formed by cutting notches 25a along the width direction of the cushion body 22 at predetermined intervals along the longitudinal direction, and at a predetermined thickness from one surface side and the other surface side, and further in the thickness direction. It is formed by cutting alternately, leaving the connecting portion 25b of a predetermined size. A reinforcing sheet 26 such as a synthetic resin or cloth is adhered and fixed to the end of each cut 25a. This prevents the cushion body 22 from being torn from the cut 25a when the elastic part 24 is extended. If a synthetic resin is used for the reinforcing sheet 26, even if the reinforcing sheet 26 becomes dirty with use, the stain can be easily and reliably wiped off.
[0034]
In addition, although the strip portion 25 including the cut portion 25a is formed in the cushion body 22 as a deformation portion for expanding and contracting the cushion body 22 in the longitudinal direction, a sheet-like elastic material made of, for example, urethane foam or cotton is used instead. By forming a cushion body 22 having a predetermined thickness by bending the cushion body 22 into a wavy shape, a deformable portion that can expand and contract in the longitudinal direction may be formed in the cushion body 22. In this case, the deformed portion may be provided only in the middle part of the cushion body 22 in the longitudinal direction.
[0035]
As shown in FIGS. 5A and 5B, side cushion members 27 that are harder than other portions are provided on both sides in the width direction of the cushion body 22 over the entire length in the longitudinal direction. Thereby, both end portions in the width direction of the mattress device 21 are harder than other portions.
[0036]
Further, a pair of rectangular mounting holes 28 are formed at the middle part and one end of the cushion body 22 in the longitudinal direction, and cushion members 22c and 22d forming the cushion body 22 are detachably mounted in each mounting hole 28. Have been.
[0037]
An intermediate portion in the longitudinal direction of the cushion body 22 supports the buttocks of the user, and one end supports the legs. Therefore, the cushioning material 22c at the part supporting the buttocks is easier to settle earlier than the cushioning material 22d supporting the legs, so that if the cushioning material 22c is used for a predetermined period of time, the cushioning material 22c is replaced with 22d, and the mattress device is replaced. 21 can be extended.
[0038]
As shown in FIG. 5B, an attachment sheet 29 made of a relatively durable cloth or synthetic resin sheet is adhered and fixed to the other end in the longitudinal direction of one side surface (lower surface) of the cushion body 22 over the entire length in the width direction. ing. A pair of first velvet fasteners 30 are bonded or sewn and fixed to both ends of the mounting sheet 29 along the longitudinal direction of the cushion body 22. The exterior body 23 has a pair of openings 23a for exposing the first velvet fastener 30.
[0039]
Note that the exterior body 23 may be entirely formed of stretchable fabric, but only the portion corresponding to the strip portion 25 is formed of stretchable fabric so that the stretchable portion 24 is formed. It may be.
[0040]
The mattress device 21 is adapted to be extended and contracted by a sliding means 31 in conjunction with the ups and downs of the back floor plate portion 7c. As shown in FIGS. 2 to 4, the sliding means 31 has a pair of band-shaped members 32 provided at both ends in the width direction of the back floor plate 7c. As shown in FIG. 4, the belt-like member 32 has a halfway portion provided on the upper surface side of the back floor plate portion 7c along the longitudinal direction of the back floor plate portion 7c, and one end portion thereof is provided at a tip end of the back floor plate portion 7c. The lower end is guided from the formed through-hole portion 33 to the lower surface side, and the other end is guided to the lower surface side from the concave portion 34 formed at the base end portion of the back floor plate portion 7c.
[0041]
One end of the band-shaped member 32 is folded into an annular first connecting member 35 provided at the tip of the arm 16 of the back lifting mechanism 11, and the end of the band-shaped member 32 is detachably attached by a second velvet fastener 36. The other end is sewn in a loop shape, and the loop portion is engaged and connected to an annular second connecting tool 37 provided in the middle of the arm 16. .
[0042]
A third velvet fastener 38 is fixed to the upper surface of the middle part of the belt-shaped member 32 along the longitudinal direction. The third velvet fastener 38 is engaged with the first velvet fastener 30 provided on the mattress device 21.
[0043]
When the arm 16 of the back lifting mechanism 11 is rotated and the back floor plate 7c is driven in the rising direction, the band-shaped member 32 provided in a loop on the back floor plate 7c is moved relative to the back floor plate 7c. 4 along the direction indicated by arrow A in FIG. Thereby, the mattress device 21 connected to the belt-shaped member 32 slides in the ascending direction indicated by the arrow B in FIG.
[0044]
Conversely, when the back floor plate portion 7c is driven in the falling direction from the upright state, the band-shaped member 32 moves in the direction opposite to the arrow A with respect to the back floor plate portion 7c. It slides in the descending direction, which is the opposite direction to B.
[0045]
Next, in the bed apparatus having the above-mentioned configuration, when the upper body of the user who lies on the mattress apparatus 21 is raised, the drive source 13 of the back-raising mechanism 11 is operated to move the drive shaft 12 forward as indicated by an arrow in FIG. Drive in the direction. Accordingly, the rotation shaft 14 is rotated, and the arm 16 is rotated in the upright direction in conjunction with the rotation.
[0046]
When the arm 16 rotates in the upright direction, the pair of rollers 17 provided at the end thereof rolls on the rail 18 provided on the back surface of the backfloor plate portion 7c, so that the backfloor plate portion 7c is pushed up in the upright direction. Will be done. As a result, the user who is lying on the mattress device 21 has his / her upper body raised by the back floor plate portion 7c.
[0047]
When the backfloor plate portion 7c is rotated in the upright direction to raise the upper body of the user, the belt-shaped member 32 moves in the direction indicated by the arrow A in FIG. 4 with respect to the backfloor plate portion 7c. As a result, the portion of the mattress device 21 connected to the belt-shaped member 32 via the velvet fasteners 30, 38 is pulled in the upward direction of the back floor plate 7c where the portion located on the back floor plate 7c rises.
[0048]
An elastic portion 24 is formed in the middle of the mattress device 21 in the longitudinal direction. For this reason, even if the mattress device 21 is bent by the raising of the back floor plate 7c, the mattress device 21 bends because the stretchable portion 24 is stretched and the portion located on the back floor plate 7c slides in the ascending direction. The generation of a compressive force on the upper surface side of the portion is prevented.
[0049]
Thus, even if the back floor plate portion 7c is raised to raise the user's upper body, the back surface of the user, particularly the waist, is not pressed by the bent mattress device 21. Discomfort can be prevented.
[0050]
On the other hand, when the user raising the upper body returns to the supine state, the drive shaft 12 of the back-raising mechanism 11 is driven in the retreating direction to drive the back floor plate portion 7c in the upright state in the falling direction. The belt-like member 32 moves in the direction opposite to the direction shown by the arrow in FIG.
[0051]
As a result, the portion of the mattress device 21 located on the back floor plate portion 7c is forcibly slid in the direction opposite to the arrow B, so that when the back floor plate portion 7c is raised, the stretchable portion 24 that has been extended is returned to its original position. The elastically restored state is restored, and the notch 25a of the elastic part 24 is closed. Therefore, even if the stretchable portion 24 is formed on the mattress device 21, the comfort of the user lying on the mattress device 21 is unlikely to be different from that of the other portions. Is prevented from being reduced.
[0052]
In order to expand and contract the expansion and contraction portion 24 of the mattress device 21, the band-shaped member 32 provided along the back floor plate portion 7 c of the bed device is linked with the undulation of the back floor plate portion 7 c, and the movement of the band member 32 The mattress device 21 was forcibly expanded and contracted.
[0053]
That is, since the mattress device 21 is expanded and contracted by utilizing the undulation of the back floor plate portion 7c, it is not necessary to provide a dedicated mechanism for expanding and contracting the mattress device 21.
[0054]
The stretchable portion 24 of the mattress device 21 is formed by using a stretchable cloth for the strip portion 25 in which the cutout 25a is formed in the cushion body 22 and the exterior body 23 covering the cushion body 22. In addition to the simple structure, the band-shaped member 32 can reliably expand and contract according to the undulation of the back floor plate portion 7c.
[0055]
In addition, a reinforcing sheet 25a is joined and fixed to the end of the cut 25a of the strip 25. Therefore, even if the strip 25 is repeatedly extended, the cut 25a can be prevented from being torn.
[0056]
The cushion body 22 of the mattress device 21 is provided with side cushion members 27 that are harder than the other portions on both sides in the width direction. The portion is greatly crushed, and it is prevented that it is difficult to sit down.
[0057]
Further, mounting holes 28 are formed in the cushion body 22 at a portion corresponding to the user's buttocks and at a portion corresponding to the feet, respectively, and the mounting holes 28 are formed in the mounting holes 28 respectively. , 22d are provided detachably.
[0058]
Since the cushion material 22c corresponding to the user's buttocks is easily degraded earlier than the cushion material 22d corresponding to the side portion, if the cushion material 22c is used for a predetermined period, if the cushion material 22c becomes loose, the cushion material is used. The performance of the mattress device 21 can be maintained by replacing the cushion material 22c with the foot-side cushion material 22d, so that the period during which the mattress device can be used with a predetermined performance or more can be extended.
[0059]
Note that the present invention is not limited to the above-described embodiment. For example, the structure for connecting the belt-shaped member and the mattress device does not connect this belt-shaped member to the cushion body of the mattress device, and a velvet fastener or the like is attached to the exterior body. In this case, the portion of the exterior body to which the band-shaped member is connected may be formed of a non-stretchable fabric.
[0064]
【The invention's effect】
According to the first aspect of the present invention, a stretchable portion is formed at an intermediate portion in the longitudinal direction of the mattress device placed on the floor plate, and when the movable floor plate of the floor plate is raised and lowered, the movable floor plate is interlocked with the up and down movement. The expansion and contraction section of the mattress device is expanded and contracted.
[0065]
Therefore, even if the mattress device is bent due to the rising of the movable floor plate portion, the mattress device is extended, so that the back surface of the user is prevented from being squeezed, thereby causing discomfort and discomfort to the user. And when the movable floor plate is laid down, the telescopic portion of the mattress device is forcibly reduced. be able to.
[0066]
According to the second aspect of the present invention, the mattress device can be expanded and contracted by using the back-raising mechanism for raising and lowering the movable floor portion of the floor plate.
This eliminates the need for a dedicated mechanism for expanding and contracting the mattress device, thereby simplifying the configuration and reducing costs.
[Brief description of the drawings]
FIG. 1 is a side view of a bed apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a lower surface side of the floor plate portion.
FIG. 3 is a perspective view showing a connection structure between the belt-shaped member and the arm.
FIG. 4 is a sectional view showing a connection structure between the belt-shaped member and the mattress device.
5A to 5C are perspective views of the same mattress device.
FIG. 6 is a perspective view of a strip portion of the mattress device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Bed frame 6 ... Floor board 7a-7d ... Floor board part 11 ... Back drive mechanism 13 ... Drive source 16 ... Arm 17 ... Roller 18 ... Rail 21 ... Mattress device 22 ... Cushion body 23 ... Exterior body 24 ... Expansion part 25 ... Strips 25a ... Incisions 26 ... Reinforcement sheets 30, 37 ... Velvet fasteners (first connecting means)
31 slide means 32 belt-like members 35 and 37 connecting tool (second connecting means)

Claims (2)

In a bed device that can raise the user's upper body,
A bed frame,
A floor plate body which is divided into a plurality of floor plate portions along the longitudinal direction of the bed frame, adjacent floor plate portions are rotatably connected to each other, and a floor plate portion located at a central portion is fixed to the bed frame,
A back-up drive mechanism for raising and lowering a movable floor plate portion rotatably connected to one end of a fixed floor plate portion of the floor plate body fixed to the bed frame;
A mattress device in which an elastic portion that can be extended and contracted along the longitudinal direction is formed in the middle portion in the longitudinal direction while being placed on the floor plate body,
When the movable floor plate portion is rotated in the upright direction, the stretchable portion of the mattress device is extended, and the portion of the mattress device located on the movable floor plate portion is slid in the ascending direction and rotated in the falling direction. A bed unit comprising: a sliding unit configured to slide a portion of the mattress device located on the movable floor plate portion in a descending direction when the mattress device is retracted to contract the elastic portion. The back raising mechanism includes a rail provided on the lower surface side of the movable floor plate along the longitudinal direction, an arm provided with a roller for rolling the rail at a tip end, and rotating the arm. A drive source for raising and lowering the movable floor plate by the rollers rolling along the rails,
The sliding means includes a band-shaped member provided over the upper surface side and the lower surface side of the movable floor plate portion, and first connecting means connecting a portion of the mattress device located on the movable floor plate portion to the band-shaped member. 2. The apparatus according to claim 1, further comprising second connecting means for connecting said band-shaped member and said arm and sliding said band-shaped member along said movable floor plate portion in accordance with rotation of said arm. Bed equipment.

Images