JPH1146926A - Bed device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bed device whose mattress part can be forced to slide upward and downward interlocking with the rise and turn of the floor board. SOLUTION: This bed device has a floor board unit, and a back raising drive mechanism. The floor board unit is divided into plural floor board parts 95a-95e, each of which is turnably connected, and the center of the floor board parts is fixed to the bed frame. The back raising drive mechanism is to raise and bring down a movable floor board part 95c which is turnably connected on the side of one edge of the fixed floor board part 95a. The bed device has also a mattress M and a belt member 127. The mattress M is put on the floor board unit 95 and is divided into plural mattress parts 121 and 122. The belt member 127 is to slide the mattress part 122 upward attached on the side of the movable floor board part 95c when the movable floor board part 95c is rotated in the standing direction, and to slide the mattress part 122 downward when the movable floor board part 95c is rotated in the flattening direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bed apparatus suitable for caring for a user who has difficulty getting up on his own.

[0002]

2. Description of the Related Art For example, when a user who has difficulty moving his / her body by himself is lying on a bed apparatus, various care needs to be given to the user.
One of the methods is to change underwear regularly.

[0003] In order to make it easy for the user to change the underwear of the upper body, a bed apparatus provided with a back raising mechanism is used. In this case, the bed device is provided with a floor plate composed of a plurality of floor plates that are rotatably connected to each other, and a mattress is placed on the floor plate.

When the above-mentioned back-raising mechanism is operated,
Since the floor panel corresponding to the upper body of the user is driven in the rising direction, the upper body of the user is thereby raised through the mattress.

When the floorboard is raised, the mattress is curved. Since the mattress has a predetermined thickness, when it is curved, a compressive force is generated on its upper surface and a tensile force is generated on its lower surface. When a compressive force is generated on the upper surface of the mattress, the user's waist is wrapped in the curved portion of the mattress and pressed by the compressive force.

[0006] If the user can lift the waist from the mattress by himself / herself, the pressure can be released. However, in the case of a user who cannot move his / her body freely by himself / herself, the waist of the mattress can be removed. Since the compressed state cannot be released, discomfort may increase.

[0007]

[Problems to be solved by the invention]

[0008]

As described above, when the upper body of the user is raised by using the bed apparatus having the back-raising mechanism, the bed is utilized by the compressive force generated on the upper surface of the mattress which is curved when the back is raised. The user's waist is pressed, which may cause discomfort to the user.

According to the present invention, there is provided a bed apparatus in which when the user's upper body is raised by using a bed apparatus having a back-raising mechanism, the user's waist is not pressed when the back is raised. Is to do.

[0010]

According to a first aspect of the present invention, there is provided a bed apparatus capable of raising a user's upper body.
The bed frame is divided into a plurality of floor panels along the longitudinal direction of the bed frame, and adjacent floor panels are rotatably connected to each other, and a floor panel located at a central portion is connected to the bed frame. A fixed floor plate, a back-up drive mechanism for raising and lowering a movable floor plate rotatably connected to one end of a fixed floor plate fixed to the bed frame of the floor plate, and And a mattress body divided into a plurality of mattress portions and a mattress portion provided on the movable floor plate portion side are slidably held with respect to the movable floor plate portion, and the movable floor plate portion is erected in an upright direction. And a sliding means for sliding the mattress portion in the ascending direction when the mattress portion is rotated in the upward direction and sliding in the descending direction when rotated in the falling direction.

According to a second aspect of the present invention, in the first aspect of the present invention, the back raising drive mechanism includes a rail provided along a longitudinal direction on a lower surface side of the movable floor plate portion, and a rail provided at a tip end.
An arm provided with a roller for rolling the rail, and the roller that rolls along the rail by rotating the arm to drive the movable floor plate up and down. The sliding means comprises a band-shaped member provided in a loop shape on the upper surface side and the lower surface side of the movable floor plate portion, and a mattress provided on the band-shaped member on the movable floor plate portion side. A second connecting means for connecting the belt-like member and the arm to each other and sliding the belt-like member along the movable floor plate in accordance with the rotation of the arm; Means.

According to the first aspect of the present invention, when the mattress body is divided into two mattress portions and the movable floor plate portion is rotated in the upright direction, one of the mattress portions provided on the movable floor plate portion Is slid in the ascending direction, and is slid in the descending direction when rotated in the falling direction, so that it is possible to prevent the mattress body from bending when the back is raised and generating a compressive force that presses the waist of the user. At the time of falling down, the mattress portion provided on the movable floor plate portion can be returned to the original state.

According to the second aspect of the present invention, since the belt-like member of the slide means is driven by using the back-raising mechanism, no special drive means is required to drive the slide means.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of the bed apparatus, which is provided with a base frame 1.
The base frame 1 is formed by arranging a pair of long rods 2 and short rods 3 in a rectangular frame shape and connecting their adjacent ends by a first connecting member 4. The long rods 2 and the short rods 3 use rectangular tubular members.

The first connecting member 4 includes a first insertion portion 5 into which the end of the long rod 2 is inserted as shown in FIGS. 5 and 6 by die-casting of aluminum, and the short rod. The second insertion portion 6 into which the end of the third insertion portion 3 is inserted, and a pair of second arms each of which is driven to rotate by a vertical drive mechanism 11 described later.
The mounting shaft 7a is fitted and fixed to the mounting portion 7 for pivotally supporting the end portions of the base frames 19a and 19b and a caster 8 with a stopper capable of holding the base frame 1 free to run at a predetermined position. The mounting hole 9 is integrally formed.

The first insertion portion 5 and the second insertion portion 6 are arranged substantially at right angles, so that the long rod 2 and the short rod 3 can be connected in a rectangular frame shape. The ends of the long rod 2 and the short rod 3 inserted into the insertion portions 5 and 6 are fixed by screws 10.

The base frame 1 is provided with the vertical drive mechanism 11 described above. This vertical drive mechanism 11 is shown in FIG.
As shown in FIG. A drive shaft 13 is attached to the drive source 12, and the drive shaft 13 is configured to be driven forward and backward in the axial direction by the drive source 12.

The tip of the drive shaft 13 is pivotally connected to a middle part of the interlocking rod 14 via a first bracket 15. One end and the other end of the interlocking rod 14 are rotating shafts 16a, 1
6b is pivotally connected to a first arm 17 provided at an intermediate position. In the middle of the first arm 17, the rotating shaft 1
A second bracket 18 is provided at a predetermined angle with respect to the first arm 17 with respect to the circumferential direction of 6a, and the drive source 12 is rotatably mounted on the second bracket 18. The end of the interlocking rod 14 is pivotally connected to the other first arm 17 via an interlocking member 20.

One end of a second arm 19a is fixed to both ends of one rotating shaft 16a, and an intermediate portion of the second arm 19b is fixed to both ends of the other rotating shaft 16b. .
The other end of each of the first and second arms 19a and 19b is provided with a support shaft 21 as shown in FIG.
And is rotatably supported by being inserted into a groove 7a of a mounting portion 7 formed on the connecting member 4. The support shaft 21 is prevented from being pulled out of the groove portion 7a by a stopper pin 22 provided at the open end of the mounting portion 7 in a direction crossing the groove portion 7a.

According to the vertical drive mechanism 11 having the above structure, when the drive source 12 is operated and the drive shaft 13 is driven in the protruding direction, the interlocking rod 14 moves in the direction shown by the arrow in FIG. As a result, the pair of rotating shafts 16a and 16b rotate clockwise as indicated by arrows in FIG. Rotating shafts 16a, 16b
Is rotated, the second arm 19a, 1
9b is linked.

Above the base frame 1, an upper and lower frame 31 driven up and down by the up and down driving mechanism 11 is provided.
Is arranged. The upper and lower frames 31, like the base frame 1, have two long rods 32 and short rods 33 arranged in a rectangular frame shape, and their adjacent ends are connected to a second connecting member 34. Are formed by being connected with each other.

As shown in FIG. 8, the second connecting member 34 has a rectangular frame shape divided into an upper member 35a and a lower member 35b, and these members 35a and 35b are joined and fixed by screws or the like. It is formed by doing. The first insertion portion 3 into which the long rod 32 is inserted is inserted into the second connecting member 34.
6 and a second insertion portion 37 orthogonal to the first insertion portion 36 and into which the short rod 33 is inserted.

The second connecting member 34 having the above-mentioned construction projects on both sides in the width direction of the upper and lower frames 31, and the projected end portions thereof have a head board fence 37 and a foot board fence 38 as a board body. 3 (a) to 3 (c), a holding hole 39 is formed as a holding portion that is inserted and held at a lower end portion through a cap 39a with a flange. In other words, upper and lower frames
The lower ends of both ends of the board fences 37, 38 in the width direction are inserted and held in holding holes 39 of a pair of second connecting members 34 provided on both sides in the width direction of the arm 31.

As shown in FIG. 1, the upper and lower frames 31
Third brackets 41 are respectively provided vertically on inner surfaces of both ends of the long rod 32 in the longitudinal direction. As shown in FIG. 7, a through hole 41a is formed in each of the third brackets 41, and a support shaft 4 protruding from one side surface of a holding plate 42 is formed in the through hole 41a.
3 is inserted. The support shaft 43 is connected to one of the rotation shafts 16.
a and the other rotary shaft 1
It is inserted into a support hole 47 of a tube member 46 provided at the other end of 6b, and rotatably supports the rotating shafts 16a, 16b.

The holding plate 42 is connected to the third bracket 4
1 is fixed by screws 45. The lower end of the third bracket 41 is formed with an L-shaped engagement piece 41b that engages with the lower end of the holding plate 42 joined thereto.

The upper and lower frames 31 are provided with a back raising drive mechanism 51. This back raising drive mechanism 51 is shown in FIG.
A drive source 52 is provided as shown in FIG. This drive source 5
A drive shaft 53 is attached to 2, and the drive shaft 53 is configured to be driven forward and backward in the axial direction by the drive source 52.

The drive source 52 is mounted on a horizontal rod 55 which is provided on a pair of support members 54 which are spaced apart in parallel. Each of the support members 54 is formed of a rectangular cylindrical member, and a pair of synthetic resin blocks 56 is provided at both ends thereof, as shown in FIG. The block 56 is held at both ends by a U-shaped metal band 58 fixed to the upper and lower surfaces of the end of the support member 54 by screws 57.

A pair of blocks 56 provided at one end of the pair of support members 54 rotatably support two intermediate portions of the first rotary shaft 59, and a pair of blocks provided at the other end. The block 56 rotatably supports two intermediate portions of the second rotating shaft 61.

As shown in FIG. 4A, one end of an arm 62 is fixed to the central portion of the first rotating shaft 59 in the axial direction.
Collars 63 are rotatably fitted to both ends. A driving shaft 53 of the driving source 52 is provided at the other end of the arm 62.
A first raising arm formed of an inverted U-shaped member having an open lower surface is connected to a pair of collars 63.
The base end of the drum 64 is fixed. A pair of receiving rollers 65 are provided on the outer surface on the distal end side of each first raising arm 64.
Is rotatably provided, and a receiving member 66 formed of a resin in a block shape is fitted and fixed to the base end portion so as to partially project from the lower surface side.

The first rotation shaft 59 is provided at both ends of the first rotation shaft 59.
The first raising arm is provided on the portion inside the raising arm 64 of FIG.
An interlocking arm 67 projecting toward the side of the arm 64 and a waist-raising arm 68 projecting toward the side of the support member 54 are respectively provided with one end thereof fixed. FIG. 4 shows the tip of the interlocking arm 67.
As shown in FIG. 3B, a pin 69 is provided for engaging with the lower surface of the receiving member 66, and a first lifting roller 70 is rotatably provided at the tip of the waist-raising arm 68. I have.

The base ends of the second raising arm 71 are fixed to both ends of the second rotating shaft 61, respectively. A second push-up roller 71a is rotatably provided at the tip of the second raising arm 71.

When the drive source 52 operates, its drive shaft 53
Is driven in the projecting direction, the first rotating shaft 59 is rotated through the arm 62 in the counterclockwise direction indicated by the arrow in FIG. When the interlocking arm 67 is interlocked with the rotation of the first rotating shaft 59, the pin 69 provided on the interlocking arm 6 causes the first raising arm via the receiving member 66.
The system 64 is pushed up.

The rotation of the first rotating shaft 59 can be selectively transmitted to the second rotating shaft 61 by a power switching mechanism 80. This power switching mechanism 80 is shown in FIG.
As shown in FIGS. 12A and 12C and FIG. 12, a first link 72 having a U-shaped cross section and having an insertion portion 72a inside is provided. One end of the first link 72 is connected to the first rotating shaft 5.
9 is pivotally attached to a bracket 73 provided at one end.

The other end of the first link 72 is provided with a through hole 74 penetrating both side walls thereof.
Around the through hole 74, a long groove 75a and a pair of engaging holes 75b are formed at intervals of 90 degrees in the circumferential direction. The long groove 75a and the engaging hole 75b are formed at one side wall and the other side wall of the first link 72 so that the long groove 75a is formed by being shifted by 90 degrees in the circumferential direction of the through hole 74. 75b is formed at the same position.

The other end of the second link 76 pivotally connected at one end to the one end of the second rotary shaft 61 via the bracket 73 is inserted into the insertion portion 72a of the first link 72. Have been. A slide hole 77 is formed at the other end of the second link 76 along the longitudinal direction. A large diameter portion 77a is formed at one end of the slide hole 77.

A bent piece 72b is formed on one side wall of the first link 72 to prevent the other end of the first link 76 inserted into the insertion portion 72a from being pulled out downward. . The first link 72 and the second link 76 are connected by a top 78 having a flat cross section. That is, the top 78 is inserted across the through hole 74 of the first link 72 and the slide hole 77 of the second link 76. The diameter of the top 78 in the short direction is set to be slightly smaller than the width of the slide hole 77, and the diameter of the longer is set substantially equal to the width of the large diameter portion 77a. Therefore, the top 78 can be rotated by the large diameter portion 77a. Both ends of the top 78 protrude from the outer surfaces of both side walls of the first link 72, and levers 79 made of synthetic resin are fixed to the protruding ends by screws 81, respectively. The long groove 75a is provided on the inner surface of each lever 79.
A first projection 82 slidably engaged with the first projection 82, and a conical second projection 83 selectively engaged with the pair of engagement holes 75b according to the rotation angle of the lever 79. I have. The second projection 83 can be elastically engaged with and disengaged from the engagement hole 75b by inserting a notch 84 into the lever 79.

When the top 78 is located at the large diameter portion 77a of the slide hole 77, the lever 79 can be rotated within a range of 90 degrees in which the first projection 82 can move along the long groove 75a. it can. When the lever 79 is substantially horizontal, the top 78 cannot slide into the slide hole 77. Therefore, in that state, the first link 72
However, the second link 76 cannot be slid by the frame 78. This state is referred to as a locked state of the power switching mechanism 80.

When the lever 79 is rotated 90 degrees from a horizontal state to a substantially vertical state, the top 78 can be slid into the slide hole 77. Therefore,
The second link 76 can slide along with the top 78 with respect to the first link 72. This state is referred to as a release state of the power switching mechanism 80. In the locked state and the released state, the second projection 83 is elastically engaged with one of the pair of engagement holes 75b, and the lever 79 is held so as not to rotate.

In the locked state, when the back lifting drive mechanism 51 operates to rotate the first rotating shaft 59,
The rotation is performed by the first link 72 of the power switching mechanism 80 and the second link 72.
Is transmitted to the second rotary shaft 61 via the link 76 of the second rotary shaft 61, so that the second rotary shaft 61 is interlocked.

In the released state, when the first rotation shaft 59 rotates and the first link 72 slides, the slide of the frame 78 in the slide hole 77 causes the movement of the first link 72 to move. Since it is not transmitted to the second link 76, the second rotating shaft 61 does not rotate. That is, the power switching mechanism 80 can transmit the rotation of the first rotation shaft 59 to the second rotation shaft 61 or cut off the rotation.

The first rotating shaft 59 and the second rotating shaft 61
At both ends are a pair of long rods 32 of the upper and lower frames 31.
Are rotatably supported by two receiving portions 85 provided two each in the middle part. This receiving part 85 is shown in FIG.
It has a side bracket 86 shown in FIG. The side bracket 86 is formed by bending a plate material into a substantially U-shaped cross section, and a bulging portion 87 bulging inward of the upper and lower frames 31.
Having. The bulging portion 87 is formed with an engaging portion 88 which is open on the upper surface and the side surface.

The engaging portion 88 has a U-shaped bearing portion 89a.
The bush member 89 formed with the is engaged. That is, as shown in FIG. 10B, a flange 91 is provided on the back surface of the bush member 89 along the bearing 89a, and by engaging the flange 91 with the side surface of the engaging portion 88,
The bush member 89 is attached to the bulging portion 87. The ends of the first and second rotating shafts 59 and 61 are rotatably engaged and held by bearings 89a of the bush member 89.

Each rotating shaft 5 held by the bearing portion 79a
Ends 9 and 61 are prevented from coming off the bearing 89a by a clip 92 elastically attached to the upper surface of the bulging portion 87. Thereby, the back raising mechanism 51 is attached to the upper and lower frames 31.

On the upper surface of the upper and lower frames 31, a floor plate 9 is provided.
5 are provided. This floor plate 95 is shown in FIGS.
As shown in (a), the upper and lower frames 31 are divided into five floor plates along the longitudinal direction. That is, the central portion in the longitudinal direction is a fixed floor plate portion 95a fixed to the upper and lower frames 31, and a waist floor plate portion 95b and a back floor plate portion 95c are sequentially rotated at one end of the fixed floor plate portion 95a. They are freely connected.

A first leg plate 95d and a second leg plate 95e are sequentially rotatably connected to the other end of the fixed floor plate 95a. The ends of the respective floor plate portions that are rotatably connected to each other are formed in an uneven shape by a concave portion 96a and a convex portion 96b.

Each of the floor plate portions 95a to 95e of the floor plate body 95
Are formed with vent holes 98, and projecting ridges 99 are provided on the upper surface at substantially predetermined intervals in the width direction over substantially the entire length in the longitudinal direction.

As a result, the mattress body M having the configuration described below, which is placed on the floor plate 95, is easy to slide in the longitudinal direction of the floor plate 95 and hard to slide in the width direction. Therefore, when the floor portions 95b to 95e are raised, the mattress body M easily slides along the ridges 99, and thus the floor plate portions 95b to 95e can be raised smoothly.

The longitudinal end of the floor plate 95 is
A plate-shaped stopper 100 that is in contact with one end of the mattress body M is provided at an end of the second leg floor plate portion 95e. The stopper 100 prevents the mattress body M from sliding in the direction of the second leg floor portion 95e.

A pair of rollers 65 provided on the first raising arm 64 of the back lifting drive mechanism 51 are shown in FIG.
As shown in FIG. 14, the back floor plate portion 95c of the floor plate body 95
And a roller 71a provided on the second raising arm 71 is in contact with a lower surface of the first leg floor plate portion 95d.

The first rotating shaft 5 of the back lifting drive mechanism 51
9 is driven to rotate counterclockwise as shown by the arrow in FIG. 4 (a), and when the first raising arm 64 is driven in the ascending direction, it is pressed against the roller 65 as shown in FIG. As a result, the back floor plate portion 95c is rotated upward, and the waist floor plate portion 95b is interlocked with the rotation of the back floor plate portion 95c. Thereby, the mattress body M
A user who lays on the upper side will be woken up.
FIG. 3C shows a state where the back floor plate portion 95c is raised.

When the second rotary shaft 61 is linked with the rotation of the first rotary shaft 59 by the power switching mechanism 71, the second
The raising arm 71 is driven in the ascending direction to rotate the first leg floor plate portion 95d, and the second leg floor plate portion 95e is linked to this rotation.

FIG. 1 shows a lower surface of the second leg floor plate portion 95e.
The holding member 112 in which the wire is bent in a U-shape as shown in FIG.
The middle part (shown in FIG. 2) is rotatably connected.
Both ends of the holding member 112 are rotatably connected to the long rod 32 of the upper and lower frames 31. Therefore,
The second leg floor plate portion 95e interlocked with the rotation of the first leg floor plate portion 95d is held by the holding member 97 so as to form a substantially U-shape with the first leg floor plate portion 95d.

The waist floor plate portion 95b of the floor plate body 95 is shown in FIG.
(A) As shown in (b), a pair of side portions 113 having step portions 113a formed inside, and both ends in the width direction provided between these side portions 11 are engaged with the step portions 113a. The pair of side portions 113
Is rotatably connected to the side of the fixed floor plate portion 95a,
One side of the waist raising member 114 is rotatably connected to one side of the back floor plate portion 95c. Therefore, the waist-raising member 114 can rotate in the ascending direction with one end connected to the back floor plate 95c as a fulcrum.

The lower surface of the waist-raising member 114 is shown in FIG.
As shown in (a) and (b), a first push-up roller 70 provided at the tip of the waist-raising arm 68 of the back-raising drive mechanism 51 is opposed. Therefore, when the first rotation shaft 59 of the back lifting drive mechanism 51 is rotated clockwise, which is the counterclockwise direction shown by the arrow in FIG. 4A, the waist raising portion of the waist floor plate portion 95b. Only 114 is rotated in the rising direction.

The mattress body M is divided into a plurality, in this embodiment, a first mattress portion 121 and a second mattress portion 122. First mattress section 121
Are the fixed floor plate portion 95a, the first leg floor plate portion 95d, and the second
The second mattress part 122 is provided over the waist floor part 95b and the back floor part 95c. Note that the number of the mattress bodies M is not limited to two, and may be divided into three or more mattress portions.

Adjacent ends of the first mattress portion 121 and the second mattress portion 122 are provided with each other as shown in FIG.
a and 122a are connected by a bendable connecting cloth 123 as a connecting means in which one end and the other end are sewn. Thereby, a pair of mattress parts 121, 122
Is movable in the direction of contact and separation within the range of the length dimension of the connection cloth 123.

As shown in FIG. 13, the second mattress portion 122 is made of an elastic material 12 such as a rectangular plate-like urethane foam.
2b is the interior cover 122c and the exterior cover 122
a.

The above-mentioned interior cover 122c is eliminated.
The exterior cover 122a alone may be used, and the exterior cover may not be divided, and only the elastic material may be divided to form a plurality of mattress portions. In this case, since one exterior ground accommodating a plurality of elastic members also serves as the connection cloth 123, the connection cloth is not required.

A belt-shaped first velvet fastener 125 is attached to each of both ends of the lower surface of the second mattress portion 122 in the width direction by means such as sewing.
As shown in FIG. 13, the pair of first velvet fasteners 125 are detachably engaged with second velvet fasteners 126 provided on the back floor plate 95c side, respectively. The first velvet fastener 125 and the second velvet fastener 126 constitute first connecting means.

The second velvet fastener 126 is a belt-like member 12 made of relatively strong cloth such as canvas.
7 is attached by means such as sewing. One end of the belt-shaped member 127 is guided through the guide hole 128 formed at one end in the longitudinal direction of the back floor plate portion 95c to the lower surface side, and the other end is located at the other end in the longitudinal direction of the back floor plate portion 95c. It is engaged with the concave portion 130 (shown in FIG. 14) and guided to the lower surface side.

The first connecting means is not limited to the first velvet fastener 125 and the second velvet fastener 126, but may be another means such as sewing the outer cover 122a and the band-shaped member 127 together. What is essential is that the exterior cover 122a and the belt-shaped member 127 can be connected.

The guide hole 128 and the recess 13
0 is provided with guide members 128a and 130a for guiding the band-shaped member 127 so as not to be offset.

One end and the other end of the strip-shaped member 127 are connected to one end and the other end of a strip-shaped connecting steel plate 129. One end of the connecting steel plate 129 is connected to the back lifting mechanism 5.
A screw 132 is attached to a connecting member 131 serving as second connecting means attached to the inner surface of the tip of the first raising arm 64.
Has been fixed by. The connecting member 131 is integrally attached to a shaft 65a on which the receiving roller 65 is attached to the first raising arm 64.

Therefore, the first raising arm 64 is driven by the driving source 52 to rotate in the rising direction.
When the leading end of the first raising arm 64, that is, the receiving roller 65 moves relative to the rail 111 in the direction indicated by the arrow A in FIG. The belt-like member 127 is slid along the upper and lower surfaces of the back floor portion 95c in the direction indicated by the arrow B in FIG.

When the belt-like member 127 slides in the direction of arrow B, the second mattress 122 slides in the direction of arrow C in conjunction with this movement via the first and second velvet fasteners 125 and 126. Therefore, when the first raising arm 64 is rotated in the rising direction to raise the back floor plate portion 75c, the second mattress 122 is forced to move the rising back floor plate portion 75c upward. Will be slid.

When the raised back floor plate portion 75c is rotated in the falling direction, the receiving roller 65 moves relatively to the rail 111 in the direction opposite to the arrow A. It slides in the direction opposite to the arrow B along the upper and lower surfaces of the back floor plate portion 75c. Therefore, at this time, the second mattress 122 is forcibly slid in the direction opposite to the arrow C descending the back floor plate portion 75c.

Next, the operation of the bed apparatus having the above configuration will be described. First, when raising the upper body of the user U, the back raising drive mechanism 51 provided on the upper and lower frames 31 is used.
Activate That is, the driving source 5 of the back-raising drive mechanism 51
2 to rotate the first rotating shaft 59 counterclockwise. As a result, the interlocking arm 67 rotates in the rising direction.
9 raises the raising arm 64 in the raising direction.

A receiving roll provided on the raising arm 64
The rail 65 is a rail 11 provided on the lower surface of the back plate 95c.
1 and is pushed up in the rising direction. Accordingly, the upper body of the user located on the back floor plate portion 95c can be raised.

The rotation of the first rotation shaft 59 can be transmitted to the second rotation shaft 61 by the power transmission mechanism 80 or can be interrupted. When the rotation of the first rotation shaft 59 is not transmitted to the second rotation shaft 61, FIG.
Even if the above-mentioned back floor plate portion 95c is raised as shown in FIG.
The leg floor plate portion 95d and the second leg floor plate portion 95e do not rotate and maintain a flat state. Therefore, for example, in the case of the user U who cannot move the legs due to a fracture or the like, the rotation of the first rotary shaft 59 is performed when the back is raised.
It may be used in a state where it is not transmitted to 1.

When the raising arm 64 is driven to raise the back floor plate 95c in order to raise the upper body of the user U, the receiving roller 65 is moved to the rail 111 by the arrow shown in FIG. Since it rolls in the direction shown by A, the belt-shaped member 127 slides in the direction shown by arrow B along the upper and lower surfaces of the back floor plate portion 95c in conjunction with the movement.

When the belt-like member 127 slides in the direction of arrow B, the second mattress portion 122 connected to the belt-like member 127 is forced in the direction shown by arrow C, that is, in the direction of ascending the rising back floor plate portion 95c. Slide.

When the second mattress portion 122 slides in the ascending direction, one end of the second mattress portion 122, that is, the waist floor plate portion 95b corresponding to the waist portion of the user U is provided.
The upper portion is not strongly bent. Therefore, when the user U is raised,
The waist portion is hardly pressed by the mattress body M, so that the user U can raise the upper body without feeling discomfort.

When the user U who has lifted his / her upper body lays down and turns the backfloor plate 95c in the upright state in the falling direction, the receiving roller 65 moves the rail 111 in the direction opposite to the arrow A. To roll. As a result, the belt-shaped member 127 slides in the direction opposite to the arrow B along the upper and lower surfaces of the back floor plate portion 95c, so that the second mattress portion 122 is linked to the sliding of the belt-shaped member 127.

The second mattress section 122 interlocks with the rotation of the back floor board 95c in the falling direction, and
When the back-floor plate portion 95c falls down to be substantially horizontal, one end surface of the second mattress portion 122 is joined to one end surface of the first mattress portion 121. , These mattress parts 121,
A gap is prevented from being formed between the end faces of the second member 122.

That is, since the load of the user is applied to the second mattress section 122, the second mattress section 122 is unlikely to slide downward simply by laying down the back floor plate section 95c.

As a result, a gap is formed between the end face of the second mattress section 122 and the end face of the first mattress section 121, but as described above, the second mattress section 1
By forcibly sliding the lower part 22 downward, it is possible to prevent a gap from being formed between the end surfaces of the first mattress part 121 and the second mattress part 122 when the back floor plate part 95c is laid down. it can.

As a result, the buttocks of the user U do not fall between the end surfaces of the pair of mattress portions 121 and 122, so that it is possible to prevent the user U from feeling uncomfortable or causing a decrease in sleeping comfort.

When taking care of the lower body of the user U who lies on the mattress body M, for example, when changing diapers or taking care of excretion, the rotation of the first rotary shaft 59 is controlled by the power transmission mechanism 80 to the first position. The drive shaft 53 of the back-raising drive mechanism 51 is driven in the backward direction while the power is not transmitted to the second rotation shaft 61 and each floor plate portion of the floor plate body 95 is kept flat. Thus, the first rotating shaft 59 is driven clockwise, and as shown in FIG. 3B, the rotation causes the waist-raising arm 68 to rotate in the ascending direction, and the interlocking arm 67 to move. It will rotate in the downward direction.

When the waist-raising arm 68 rotates in the ascending direction, the waist-raising member 114 of the waist floor plate 95b is pivoted in the rising direction by the first push-up roller 70 provided at the end thereof. Accordingly, the waist-raising member 114 pushes up the waist of the user U together with one end of the second mattress portion 122 of the mattress body M.

At this time, since one end of the first mattress portion 121 is not pushed up, a large step is formed between the first mattress portion 121 and the one end of the second mattress portion 122 as shown in FIG. Thus, a space S is formed below the waist portion of the user U. That is, the waist portion of the user U floats from the upper surface of the mattress body M.

Therefore, the caregiver can use the space S without lifting the waist of the user U.
Since the diaper of the user U can be replaced and care for excretion can be taken, no great burden is imposed on the caregiver.

The first mattress portion 121 and the second mattress portion 122 are connected to each other by a connecting member 123 so as to be movable within a predetermined range in the contact and separation directions. Therefore, the mattress body M is made up of a pair of mattress portions 121, 12
Even if it is divided into two, not only one of the mattress portions does not slip off from the floor plate body 95, but also the second mattress portion 122 is extended within a range where the connecting member 123 extends from a bent state. One end can be pushed up by the waist-raising member 114.

Further, the waist of the user U is
, The degree of pressure of the user U on the mattress body M is reduced. In particular, the degree of compression at the sacral part of the buttocks, where pressure ulcers are likely to occur, is greatly reduced, and then the degree of compression at the back and heels is also reduced.

Therefore, by raising the waist-raising member 114 at a predetermined cycle when the back floor plate portion 95c is not raised, it is possible to reduce the occurrence of pressure sores on the body of the user U. it can.

When the first rotating shaft 59 is rotated clockwise to raise the waist raising member 114 of the waist floor plate portion 95b, the back floor plate portion 96c is raised via the raising arm 64. The interlocking arm 67 for raising is also rotated clockwise.

A pin 69 provided on this interlocking arm 67
Is merely engaged with the lower surface of the receiving member 66 provided on the raising arm 64, so that even if the interlocking arm 67 is rotated clockwise, the raising arm 64 is rotated. Is not affected.

That is, even if the waist-raising member 114 is raised using the back-raising drive mechanism 51, the back-floor plate portion 9 supported on the upper and lower frames 31 in a substantially horizontal falling state.
Since only the waist-raising member 114 can be raised without rotating the 6c in the upward or downward direction, the waist of the user U is reliably lifted by the waist-raising member 114, and the user by the mattress body M The degree of pressure on U's body can be reduced.

Further, since the waist-raising member 114 can be driven up and down by the back-raising driving mechanism 51, a dedicated driving mechanism is not required. That is, the waist-raising member 114 can be driven up and down without complicating the configuration.

In the above-described embodiment, the connecting steel plate is interposed between one end and the other end of the band-shaped member provided on the back floor plate portion. It may be formed in a loop shape and connected to the connecting member.

[0090]

According to the first aspect of the present invention, when the mattress body is divided into a plurality of mattress portions and the movable floor plate portion is turned in the upright direction, the mattress portion provided on the movable floor plate portion is provided. Is forcibly slid in the ascending direction, and the mattress portion is forcibly slid in the descending direction when the movable floor plate portion is rotated in the falling direction.

For this reason, by forcibly sliding the mattress portion in the ascending direction when raising the back, it is possible to prevent the mattress portion from bending and generating a compressive force that presses against the waist of the user. When a user who cannot move his / her body freely can raise his / her upper body, it is possible to prevent the lower back from being pressed and causing discomfort.

Further, when the movable floor plate portion is laid down,
Since the mattress section is forcibly slid downward, the end surface of the mattress section on the movable floor plate section can be securely joined to the end surface of the mattress section provided on the fixed floor plate section.

As a result, it is possible to prevent a gap from being formed between the end surfaces of the adjacent mattress portions when the movable floor plate portion is laid down, thereby giving a user discomfort and causing a decrease in sleeping comfort. Can be prevented.

According to the second aspect of the present invention, the sliding means for sliding the mattress along the movable floor plate in response to the up and down rotation of the movable floor plate is driven by utilizing the back raising mechanism. I made it. Therefore, a dedicated driving unit is not required to drive the sliding unit, so that the configuration can be simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an overall configuration of an embodiment of the present invention.

FIG. 2A is a plan view of the same, and FIG. 2B is an enlarged cross-sectional view of the floor plate taken along line AA ′ in FIG. 2A.

FIG. 3A is a front view showing a state in which the floor plate is flat,
(B) is a front view of a state where the floor plate is flat and the waist-raising member is raised, and (c) is a front view of the same state in which the back is raised.

FIG. 4 (a) is a perspective view of a back raising drive mechanism, and FIG. 4 (b).
FIG. 4 is a cross-sectional view showing a state in which a pin of an interlocking arm is engaged with a receiving member provided on the raising arm.

FIG. 5 is a plan view of the first connecting member.

FIG. 6 is a perspective view of the first connecting member.

FIG. 7 is an exploded perspective view of a connection structure between the vertical drive mechanism and the upper and lower frames.

FIG. 8 is an exploded perspective view of the second connecting member.

FIG. 9 is a perspective view of a state in which a rotation shaft of the back-raising drive mechanism is supported.

FIG. 10 (a) is a perspective view of a receiving portion for attaching the rotating shaft of the back-raising drive mechanism to the upper and lower frames, and FIG.

11A is a plan view of the power switching mechanism in a partially sectioned manner, FIG. 11B is a sectional view of the power switching mechanism taken along the line AA in FIG. 11A, and FIG. Front view.

FIG. 12 is an exploded perspective view of the power switching mechanism.

FIG. 13 is an enlarged sectional view of the slide mechanism.

FIG. 14 is a perspective view showing the lower surface side of the back floor plate.

FIG. 15 is a perspective view of the mattress body.

[Explanation of symbols]

 31 ... vertical frame (bed frame) 51 ... back raising drive mechanism 52 ... drive source 64 ... raising arm 67 ... interlocking arm 68 ... waist raising arm (raising means) 95 ... floor plate 95a to 95e: floor plate portion 114: waist-raising member 121: first mattress portion 122: second mattress portion 127: belt-shaped member (slide means) M: mattress body

Claims (2)

[Claims] 1. A bed apparatus capable of raising a user's upper body, wherein the bed frame is divided into a plurality of floor plates along a longitudinal direction of the bed frame, and adjacent floor plates are rotatable with respect to each other. And a floor plate located at a central portion is rotatably connected to a floor plate fixed to the bed frame, and one end of the fixed floor plate fixed to the bed frame of the floor plate. A back-up drive mechanism for raising and lowering the movable floor plate portion; a mattress body placed on the floor plate member and divided into a plurality of mattress portions; and a mattress portion provided on the movable floor plate portion side. It is slidably held on the floor panel, and when the movable floor panel is rotated in the upright direction, the mattress section is slid in the upward direction and lowered in the downward direction when rotated. Bed apparatus being characterized in that comprising a sliding means for sliding the direction. 2. The back raising drive mechanism includes a rail provided on a lower surface side of the movable floor plate along a longitudinal direction, and a roller for rolling the rail at a tip end. Arm and
The arm comprises a drive source for raising and lowering the movable floor plate by means of the rollers rolling along the rail by rotating the arm. A band-shaped member provided in a loop shape on the upper surface side and the lower surface side; first connecting means for connecting the band-shaped member to a mattress provided on the movable floor plate side; 2. The bed apparatus according to claim 1, further comprising a second connecting means for connecting the belt-shaped member along the movable floor plate in accordance with the rotation of the arm.