JP3568738B2 - 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 bed apparatus suitable for caring a user who has difficulty getting up by himself.
[0002]
[Prior 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 performed for the user. One such practice is to change underwear regularly.
[0003]
If the bed device has a structure for raising the back, the underwear of the upper body can be changed relatively easily by raising the user's upper body using the back raising mechanism.
[0004]
However, when changing the underwear of the lower body, it is necessary to remove or put on the underwear while lifting the buttocks of the supine user. For this reason, a large force is required to lift the buttocks of the user, so that the work of changing the underwear of the lower body, for example, the diaper, is not easy, and this places a heavy burden on the caregiver.
[0005]
On the other hand, as described above, a bed apparatus provided with a back-raising mechanism is used in order to easily exchange the underwear of the upper body of the user. 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.
[0006]
When the back-raising mechanism is operated, the floor panel corresponding to the upper body of the user is driven in the rising direction, whereby the upper body of the user is raised through the mattress.
[0007]
When the floorboard is raised, the mattress is curved. Since the mattress has a predetermined thickness dimension, 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.
[0008]
If the user can lift the lower back from the mattress by themselves, the compression state can be released.However, if the user has difficulty moving the body freely by himself, the compression state of the lower back by the mattress can be reduced. Since it cannot be released, discomfort may increase.
[0009]
[Problems to be solved by the invention]
As described above, care for a user who cannot move his / her body by himself / herself, especially when changing the underwear of the lower body, must be performed while lifting the buttocks of the user. And the burden on the caregiver was large.
[0010]
If the user's upper body is lifted using a bed device equipped with a back-raising mechanism, the user's waist is pressed by the compressive force generated on the upper surface of the mattress that curves when the user lifts the back. Sometimes it gives pleasure.
[0011]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a bed device that allows a user to easily exchange underwear of a lower body of a user who cannot move his / her body freely.
[0012]
The present invention is to provide a bed device that prevents a user's lumbar region from being pressed when the user raises his / her back when the upper body of the user is raised using a bed device provided with a back raising mechanism. is there.
[0013]
[Means for Solving the Problems]
The invention according to claim 1 is a bed device capable of raising a user's upper body,
A bed frame,
A fixed floor plate portion which is divided into a plurality of floor plate portions along a 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 floor plate body in which the floor plate portion connected to the fixed floor plate portion is a movable floor plate portion ,
A drive source, a drive shaft that is driven forward and backward in the axial direction by the drive source, a rotary shaft that is driven to rotate in conjunction with the forward and backward drive of the drive shaft, and a raising arm that is driven up and down in response to the rotation of the rotary shaft And a back-up drive mechanism that drives the movable floor plate portion up and down by the raising arm ,
A waist-raising member that is provided rotatably in the rising direction on the movable floor plate portion driven by the back-raising drive mechanism and that is driven in the rising direction to push up the waist of the user,
The rotating shaft of the back-raising drive mechanism is provided to raise the waist-raising member when the rotating shaft is rotationally driven by the drive source in a direction opposite to a direction in which the movable floor plate is raised. A waist-raising arm that drives in the direction ,
It is characterized by having.
[0014]
According to a third aspect of the present invention, there is provided a bed device capable of raising a user's upper body,
A bed frame,
A floor plate which is divided into a plurality of floor plates along the longitudinal direction of the bed frame, adjacent floor plates are rotatably connected to each other, and a floor plate located at a central portion is fixed to the bed frame. When,
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 body placed on the floor plate and divided into a plurality of mattress portions,
Holding means for holding the mattress portion provided on the movable floor plate portion side slidably with respect to the movable floor plate portion, and for sliding the mattress portion in the ascending direction when the movable floor plate portion is rotated in the upright direction; It is characterized by having.
[0015]
According to a fourth aspect of the present invention, in the second or third aspect of the present invention, the plurality of mattress portions are connected to each other so as to be capable of coming and going within a predetermined range by a connecting means.
[0016]
According to the invention of claim 1, since the waist-raising member that pushes up the waist of the user is provided on the movable floor plate portion of the floor plate body , the caregiver can exchange underwear of the lower body without lifting the buttocks of the user. .
[0017]
According to the third 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 moved upward. This prevents the mattress body from curving when the back is raised, thereby preventing the generation of a compressive force that presses against the waist of the user.
[0018]
According to the fourth aspect of the present invention, the mattress body is connected to the mattress body so that the mattress body can be separated from the mattress body within a predetermined range by the connecting means. The part can be prevented from slipping off the floorboard.
[0019]
Embodiment
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of the bed device, and the bed device has 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.
[0020]
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 an end of the short rod 3. A second insertion portion 6 into which the portion is inserted, a mounting portion 7 for pivotally supporting an end portion of each of a pair of second arms 19a and 19b which are driven to rotate by a vertical drive mechanism 11, which will be described later. A mounting hole 9 into which a mounting shaft 8a of a caster 8 having a stopper capable of holding the base frame 1 freely and at a predetermined position so as to be unable to run is formed integrally. The first insertion portion 5 and the second insertion portion 6 are arranged at substantially 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.
[0021]
The base frame 1 is provided with the vertical drive mechanism 11 described above. The vertical drive mechanism 11 has a drive source 12 as shown in FIG. A drive shaft 13 is attached to the drive source 12, and the drive shaft 13 is driven by the drive source 12 to move forward and backward in the axial direction.
[0022]
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 pivotally connected to a first arm 17 provided at an intermediate portion of the rotating shafts 16a and 16b, respectively. A second bracket 18 is provided in the middle of the first arm 17 at a predetermined angle with respect to the first arm 17 with respect to the circumferential direction of the rotating shaft 16a. The drive source 12 is rotatably attached to the drive source 18. An end of the interlocking rod 14 is pivotally connected to the other first arm 17 via an interlocking member 20.
[0023]
One end of a second arm 19a is fixed to both ends of one rotating shaft 16a, and an intermediate part of the second arm 19b is fixed to both ends of the other rotating shaft 16b. At the other end of each of the first and second arms 19a and 19b, a support shaft 21 is provided as shown in FIG. 5, and this support shaft 21 is provided for the mounting portion 7 formed on the first connecting member 4. It is inserted into the groove 7a and is rotatably supported. 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.
[0024]
According to the vertical drive mechanism 11 having the above configuration, when the drive source 12 is operated and the drive shaft 13 is driven in the projecting direction, the interlocking rod 14 moves in the direction indicated by the arrow in FIG. The rotating shafts 16a and 16b rotate clockwise as indicated by arrows in FIG. When the rotating shafts 16a and 16b rotate, the second arms 19a and 19b are linked to the rotation.
[0025]
Above the base frame 1, there is arranged an upper and lower frame 31 which is vertically driven by the above and below driving mechanism 11. 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.
[0026]
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 with screws or the like. Is formed. The second connecting member 34 has a first insertion portion 36 into which the long rod 32 is inserted, and a second insertion portion orthogonal to the first insertion portion 36 and into which the short rod 33 is inserted. A portion 37 is formed.
[0027]
The second connecting member 34 having the above construction protrudes on both sides in the width direction of the upper and lower frames 31, and the protruding ends thereof have a head board fence 37 and a foot board fence 38 (FIG. 3). (Shown in (a) to (c)) is formed with a holding hole 39 as a holding portion that is inserted and held through a cap 39a with a flange. That is, the lower ends of the board fences 37 and 38 are inserted and held in the holding holes 39 of the pair of second connecting members 34 provided on both sides in the width direction of the upper and lower frames 31. It has become.
[0028]
As shown in FIG. 1, third brackets 41 are provided vertically on inner surfaces of both ends of the long rod 32 of the upper and lower frames 31 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 43 protruding from one side of the holding plate 42 is inserted into the through hole 41a. The support shaft 43 is inserted into a support hole 44 formed at an end of the one rotation shaft 16a and a support hole 47 of a tube member 46 provided at the other end of the other rotation shaft 16b. 16b is rotatably supported.
[0029]
The holding plate 42 is fixed to the third bracket 41 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.
[0030]
A back-raising drive mechanism 51 is provided on the upper and lower frames 31. This back-up drive mechanism 51 has a drive source 52 as shown in FIG. A drive shaft 53 is attached to the drive source 52, and the drive shaft 53 is driven by the drive source 52 to move forward and backward in the axial direction.
[0031]
The drive source 52 is attached to a horizontal rod 55 provided on a pair of support members 54 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.
[0032]
A pair of blocks 56 provided at one end of the pair of support members 54 rotatably support two intermediate portions of the first rotating shaft 59, and a pair of blocks 56 provided at the other end. Are rotatably supported at two places in the middle of the second rotating shaft 61.
[0033]
One end of an arm 62 is fixed to the axial center of the first rotary shaft 59, and collars 63 are rotatably fitted to both ends. The other end of the arm 62 is rotatably connected to the tip of a drive shaft 53 of the drive source 52, and a pair of collars 63 is formed of an inverted U-shaped member having an open lower surface. The base end of the raising arm 64 is fixed. A pair of receiving rollers 65 are rotatably provided on the outer surface on the distal end side of each first raising arm 64, and a receiving member 66 formed of resin in a block shape is provided at the base end. The portion is fitted and fixed by projecting from the lower surface side.
[0034]
At both ends of the first rotating shaft 59 inside the first raising arm 64, an interlocking arm 67 projecting toward the first raising arm 64, and a support member A waist raising arm 68 protruding toward the side 54 is provided with one end fixed thereto. As shown in FIG. 4B, a pin 69 for engaging with the lower surface of the receiving member 66 is provided at the distal end of the interlocking arm 67. A lifting roller 70 is rotatably provided.
[0035]
Base ends of second raising arms 71 are fixed to both ends of the second rotation shaft 61, respectively. A second push-up roller 71a is rotatably provided at the tip of the second raising arm 71.
[0036]
When the drive source 52 is actuated and the drive shaft 53 is driven in the projecting direction, the first rotation shaft 59 is rotated via the arm 62 in the counterclockwise direction indicated by the arrow in FIG. Can be When the interlocking arm 67 interlocks with the rotation of the first rotating shaft 59, the pin 69 provided on the interlocking arm 6 pushes the first raising arm 64 via the receiving member 66. It is supposed to be raised.
[0037]
The rotation of the first rotating shaft 59 can be selectively transmitted to the second rotating shaft 61 by a power switching mechanism 80. The power switching mechanism 80 has a U-shaped cross section as shown in FIGS. 11A to 11C and FIG. 12, and has a first link 72 whose inside is an insertion portion 72a. One end of the first link 72 is pivotally attached to a bracket 73 provided at one end of the first rotation shaft 59.
[0038]
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 pair of long grooves 75a is formed at 90 ° intervals in the circumferential direction. An engagement hole 75b is formed. The long groove 75a and the engaging hole 75b are formed on one side wall and the other side wall of the first link 72 so that the long groove 75a is formed at an angle of 90 degrees in the circumferential direction of the through hole 74. 75b is formed at the same position.
[0039]
The other end of a second link 76 pivotally connected at one end to one end of the second rotating shaft 61 via a bracket 73 is inserted into the insertion portion 72a of the first link 72. . 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.
[0040]
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.
[0041]
The first link 72 and the second link 76 are connected by a piece 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 slightly smaller than the width of the slide hole 77, and the diameter of the longer one 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.
[0042]
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. A first projection 82 slidably engaged with the long groove 75a is provided on an inner surface of each lever 79, and a conical shape selectively engaged with a pair of engagement holes 75b according to the rotation angle of the lever 79. The second projection 83 is provided. 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.
[0043]
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. When the lever 79 is in a substantially horizontal state, the top 78 cannot slide into the slide hole 77. Therefore, in this state, the second link 76 cannot slide with respect to the first link 72 by the frame 78. This state is a locked state of the power switching mechanism 80.
[0044]
When the lever 79 is rotated 90 degrees from a horizontal state to a substantially vertical state, the top 78 can slide into the slide hole 77. Therefore, the second link 76 can slide with the frame 78 with respect to the first link 72. This state is referred to as a released 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.
[0045]
In the locked state, when the back lifting drive mechanism 51 is operated to rotate the first rotation shaft 59, the rotation is transmitted through the first link 72 and the second link 76 of the power switching mechanism 80. Since the rotation is transmitted to the second rotating shaft 61, the second rotating shaft 61 is interlocked.
[0046]
In the released state, when the first rotation shaft 59 rotates and the first link 72 slides, the slide of the top 78 slides in the slide hole 77, so that the movement of the first link 72 becomes the second movement. Since it is not transmitted to the 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.
[0047]
Both ends of the first rotary shaft 59 and the second rotary shaft 61 are rotatably mounted on two receiving portions 85 provided at the middle portions of the pair of long rods 32 of the upper and lower frames 31, respectively. Supported. The receiving portion 85 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 has a bulging portion 87 bulging inward of the upper and lower frames 31. The bulging portion 87 is formed with an engaging portion 88 which is open on the upper surface and the side surface.
[0048]
A bush member 89 having a U-shaped bearing 89a is engaged with the engaging portion 88. That is, as shown in FIG. 10B, a flange 91 is provided on the back side 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 the bearing 89a of the bush member 89.
[0049]
An end of each of the rotating shafts 59 and 61 held by the bearing portion 79a is prevented from coming off from the bearing portion 89a by a clip 92 elastically mounted on the upper surface of the bulging portion 87. Thereby, the back raising mechanism 51 is attached to the upper and lower frames 31.
[0050]
A floor plate 95 is provided on the upper surface of the upper and lower frames 31. The floor panel 95 is divided into five floor panels along the longitudinal direction of the upper and lower frames 31, as shown in FIGS. 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.
[0051]
A first leg floor plate portion 95d and a second leg floor plate portion 95e are sequentially rotatably connected to the other end side of the fixed floor plate portion 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.
[0052]
Ventilation holes 98 are formed in each of the floor panel portions 95a to 95e of the floor panel body 95, and ridges 99 extending substantially the entire length in the longitudinal direction project from the upper surface at predetermined intervals in the width direction.
[0053]
As a result, the mattress body M having the configuration described below, which is placed on the floor plate body 95, is easy to slide in the longitudinal direction of the floor plate body 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, so that the floor portions 95b to 95e can be raised smoothly.
[0054]
In addition, 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, which is a longitudinal end of the floor plate body 95. The stopper 100 prevents the mattress body M from sliding in the direction of the second leg floor portion 95e.
[0055]
As shown in FIG. 3 (c), a pair of rollers 65 provided on the first raising arm 64 of the back lifting drive mechanism 51 are provided on the back floor plate portion 95c of the floor plate body 95. The roller 71a provided on the second raising arm 71 is in contact with the rail 111 provided on the lower surface, and is in contact with the lower surface of the first leg floor plate 95d.
[0056]
When the first rotating shaft 59 of the back lifting drive mechanism 51 is driven to rotate counterclockwise as indicated by the arrow in FIG. 4A, the first raising arm 64 is driven in the upward direction. As shown in FIG. 3 (c), the back floor plate portion 95c is pressed by the rollers 65 to rotate upward, and the waist floor plate portion 95b is interlocked with the rotation of the back floor plate portion 95c. As a result, the user who is lying on the mattress body M is raised.
[0057]
When the second rotation shaft 61 is linked with the rotation of the first rotation shaft 59 by the power switching mechanism 71, the second raising arm 71 is driven in the ascending direction, and the first leg floor plate portion 95d is moved. The second leg floor plate 95e is interlocked with the rotation.
[0058]
As shown in FIG. 1, an intermediate portion of a holding member 112 (shown in FIG. 2) in which a wire is bent in a U-shape as shown in FIG. 1 is rotatably connected to the lower surface of the second leg floor plate portion 95e. Both ends of the holding member 112 are rotatably connected to the long rod 32 of the upper and lower frames 31. Accordingly, 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 be substantially U-shaped with the first leg floor plate portion 95d. .
[0059]
As shown in FIGS. 2A and 2B, the waist floor plate portion 95b of the floor plate body 95 has a pair of side portions 113 having a step portion 113a formed on the inside, and a width provided between these side portions 11. And a pair of side portions 113 rotatably connected to the sides of the fixed floor plate portion 95a. One side of 114 is rotatably connected to one side of the back floor plate 95c. Accordingly, the waist-raising member 114 can rotate in the ascending direction with the one end connected to the back floor plate 95c as a fulcrum.
[0060]
3 (a) and 3 (b), a first push-up roller 70 provided at the end of a waist-raising arm 68 of the back-raising drive mechanism 51 is opposed to the lower surface of the waist-raising member 114. ing. Accordingly, 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.
[0061]
The mattress body M is divided into a plurality, in this embodiment, a first mattress portion 121 and a second mattress portion 122. The first mattress portion 121 is provided over the fixed floor plate portion 95a, the first leg floor plate portion 95d, and the second leg floor plate portion 95e, and the second mattress portion 122 is provided over the waist floor plate portion 95b and the back floor plate portion 95c. ing. The number of the mattresses M is not limited to two, and may be divided into three or more mattress portions.
[0062]
As shown in FIGS. 13A and 13B, adjacent ends of the first mattress portion 121 and the second mattress portion 122 have one end portions on the outer lands 121 a and 122 a over the entire length in the width direction. And the other end are connected by a bendable connecting cloth 123 as a connecting means sewn. Further, one end and the other end of a pair of band-shaped rubber cords 124 as elastic members are connected to lower surfaces of the pair of mattress portions 121 and 122. Both ends of each rubber string 124 are passed through and fixed inside the mattress parts 121 and 122, respectively.
[0063]
The rubber string 124 urges the pair of mattress portions 121 and 122 in a direction in which mutually adjacent end surfaces are joined. In FIG. 13B, since the pair of mattress portions 121 and 122 are urged in a direction in which the mattress portions 121 and 122 are separated from each other by an external force, the connecting cloth 123 is stretched. The connection cloth 123 is contracted by the urging force of the rubber string 124, and the end surfaces of the pair of mattress portions 121 and 122 on one end side are joined via the connection cloth 123.
[0064]
That is, the pair of mattress portions 121 and 122 can be displaced in the direction of coming and coming within the range of the length dimension of the connection cloth 123. Thereby, even if the mattress body M is divided into the two mattress parts 121 and 122, these are usually in a state where their end faces are joined on the floor plate body 95, so that the divided part gives the user U discomfort. Never.
[0065]
As shown in FIG. 13B, the mattress portions 121 and 122 are formed by covering elastic members 121b and 122b such as a rectangular plate-like urethane foam with the exterior lands 121a and 122a. Alternatively, a plurality of mattress portions may be formed by dividing only the elastic material without dividing the exterior ground. In that case, a rubber string that urges in the direction in which adjacent elastic members are joined is necessary, but since one exterior ground containing a plurality of elastic members also serves as the connection cloth 123, the connection cloth is unnecessary. .
[0066]
One end of a pair of band-like members 125 constituting a holding means is fixed to the other end of the lower surface of the second mattress portion 122 in the longitudinal direction by sewing. This band-like member 125 is formed of a cloth having strength such as a canvas, and one end of a connecting member 126 is connected to the other end as shown in FIGS. 14 (a) and 14 (b). The other end of the connecting member 126 is connected to a loop member 127 in which a band-like cloth such as a canvas is sewn in an annular shape.
[0067]
As shown in FIG. 14A, the band-like member 125 is guided from the upper surface on the distal end side of the back floor plate portion 95c of the floor plate body 95 to the lower surface side, and the loop member 127 is the first member of the back lifting drive mechanism 51. The raising arm 64 is engaged and held on the outer peripheral surface of a locking roller 128 rotatably provided on the inner surface side of the distal end of the arm 64. The locking roller 128 is mounted on the other end of a mounting shaft 129 having a roller 65 provided on the outer surface of the distal end of the first raising arm 64 at one end. .
[0068]
The first raising arm 64 and the back floor plate 95c have different rotation centers. Therefore, when the back floor plate portion 95c is raised by the first raising arm 64, the other end of the belt-like member 125 is moved by the locking roller 128 of the first raising arm 64 as shown in FIG. (C) Since the second mattress portion 122 is pulled in the direction indicated by the arrow X, the second mattress portion 122 slides the rising back floor plate portion 95c in the ascending direction by the pulling force.
[0069]
Next, the operation of the bed apparatus having the above configuration will be described.
[0070]
First, when raising the upper body of the user U, the back-up drive mechanism 51 provided on the upper and lower frames 31 is operated. That is, the drive source 52 of the back lifting drive mechanism 51 is operated to rotate the first rotation shaft 59 in the counterclockwise direction. As a result, the interlocking arm 67 rotates in the elevating direction, and the pin 69 provided on the interlocking arm 67 causes the elevating arm 64 to rotate in the elevating direction.
[0071]
Since the receiving roller 65 provided on the raising arm 64 is engaged with the rail 111 provided on the lower surface of the back floor plate 95c, it pushes the back floor plate 95c upward. increase. Accordingly, the upper body of the user located on the back floor plate 95c can be raised.
[0072]
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, the first leg floor plate portion 95d can be raised even if the back floor plate portion 95c is raised as shown in FIG. And the second leg floor plate portion 95e do not rotate and maintain a flat state. For this reason, for example, in the case of the user U who cannot move the leg due to a fracture or the like, the user U may use the rotation without rotating the first rotation shaft 59 to the second rotation shaft 61 when raising his / her back.
[0073]
When the raising arm 64 is driven to raise the back floor 95c in order to raise the upper body of the user U, the second mattress portion 122 of the mattress body M is pulled by the belt-like member 125, and FIG. As shown by arrow Y in (c), the back floor plate portion 95c is slid in the ascending direction.
[0074]
That is, the mattress body M is divided into the first mattress portion 121 and the second mattress portion 122, and one end thereof is connected by the band-shaped member 125, so that the second mattress portion 122 is Can be slid in the ascending direction along with the rise of.
[0075]
When the second mattress portion 122 slides in the ascending direction, one end portion of the second mattress portion 122, that is, a portion located on the waist floor plate portion 95b corresponding to the waist portion of the user U is strongly bent. Disappears. Therefore, when the upper body of the user U is raised, the waist portion of the user U is hardly pressed by the mattress body M, so that the user U can raise the upper body without feeling discomfort. it can.
[0076]
When taking care of the lower body of the user U who is lying on the mattress body M, for example, when changing diapers or taking care of excretion, the power transmission mechanism 80 causes the rotation of the first rotation shaft 59 to be changed to the second rotation. While not transmitting to the shaft 61, each floor plate of the floor plate body 95 is kept flat, and the drive shaft 53 of the back lifting drive mechanism 51 is driven in the backward direction. Thereby, the first rotating shaft 59 is driven clockwise, and as a result, as shown in FIG. 3B, the waist-raising arm 68 rotates in the ascending direction, and the interlocking arm 67 is moved. It will rotate in the downward direction.
[0077]
When the waist-raising arm 68 rotates in the ascending direction, the waist-raising member 114 of the waist floor plate portion 95b is pivoted in the rising direction by the first lifting roller 70 provided at the end thereof. 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.
[0078]
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 one end of the second mattress portion 122 as shown in FIG. 3B. A space S is formed below the waist of the user U. That is, the waist portion of the user U floats from the upper surface of the mattress body M.
[0079]
Therefore, by using the space S, the caregiver can change the diaper of the user U or take care of excretion without lifting the waist of the user U. There is no burden.
[0080]
The first mattress portion 121 and the second mattress portion 122 are connected by a connecting member 123 and a rubber string 124 so as to be movable in a contacting / separating direction within a predetermined range. Therefore, even if the mattress body M is divided into a pair of mattress parts 121 and 122, not only one of the mattress parts does not slip off from above the floor plate body 95, but also when the floor plate body 95 is flattened. Does not cause a large gap between one end surfaces of the pair of mattress portions 121 and 122, and thus does not cause a decrease in performance.
[0081]
In addition, when the waist of the user U is pushed up by the waist-raising member 114, 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.
[0082]
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.
[0083]
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. Arm 67 also rotates clockwise.
[0084]
Since the pin 69 provided on the interlocking arm 67 only engages with the lower surface of the receiving member 66 provided on the raising arm 64, the interlocking arm 67 moves clockwise. Even if it rotates, the raising arm 64 is not affected.
[0085]
That is, even if the waist-raising member 114 is raised using the back-raising drive mechanism 51, the back-floor plate portion 96c supported on the upper and lower frames 31 in a substantially horizontal falling state is raised or lowered. Since only the waist-raising member 114 can be raised without rotating, the waist of the user U is reliably lifted by the waist-raising member 114, and the degree of compression of the body of the user U by the mattress body M is reduced. Can be reduced.
[0086]
Moreover, since the waist-raising member 114 can be driven up and down by the back-raising drive mechanism 51, a dedicated drive mechanism is not required. That is, the waist-raising member 114 can be driven up and down without complicating the configuration.
[0087]
【The invention's effect】
According to the first aspect of the invention, since the waist-raising member that pushes up the waist of the user is provided on the movable floor portion of the floor plate body , the caregiver does not need to lift the buttocks of the user to exchange underwear or excretion of the lower body. Care and the like can be easily performed.
[0089]
According to the invention of claim 3 , the mattress body is divided into a plurality of mattress portions, and when the movable floor plate portion is rotated in the upright direction, the mattress portion provided on the movable floor plate portion slides in the ascending direction. Because of this, it is possible to prevent the mattress body from being curved when the back is raised and generating a compressive force that presses against the waist of the user.
Therefore, in particular, when the user who cannot move his / her body freely by himself / her raises his / her upper body, it is possible to prevent the lower back from being pressed and causing discomfort.
[0090]
Therefore, in particular, when the user who cannot move his / her body freely by himself / her raises his / her upper body, it is possible to prevent the lower back from being pressed and causing discomfort.
[0091]
According to the invention of claim 4 , since the plurality of mattress portions of the mattress body are connected to and separated from each other within a predetermined range by the connecting means, even if the mattress body is divided into a pair of mattress portions, each mattress portion is separated. Not only can the part be prevented from slipping off the floorboard, but also a large gap is created between the end faces of the pair of mattress parts, and there is no inconvenience in use.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing the entire 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.
3 (a) is a front view of the same flat floor plate, FIG. 3 (b) is a front view of the same flat floor plate with a waist-raising member raised, and FIG. The front view of a state.
FIG. 4A is a perspective view of a back raising drive mechanism, and FIG. 4B is a cross-sectional view of 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 the connection structure between the vertical drive mechanism and the vertical frame.
FIG. 8 is an exploded perspective view of the second connecting member.
FIG. 9 is a perspective view of a state in which the 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 lifting drive mechanism to the upper and lower frames, and FIG. 10 (b) is a rear view of the bush for supporting the rotating shaft rotatably.
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. 12A, and FIG. Front view.
FIG. 12 is an exploded perspective view of the power switching mechanism.
13A is a perspective view showing a lower surface side of the mattress body, and FIG. 13B is a cross-sectional view of a connection portion of a pair of mattress parts.
14A is a cross-sectional view of a connection structure between a second mattress portion and an engagement roller provided on a first raising arm, and FIG. The perspective view of the connection state with a roller.
[Explanation of symbols]
31 ... top and bottom frame (bed frame)
Reference numeral 51: back raising drive mechanism 52: driving source 64: raising arm 67: interlocking arm 68: waist raising arm (raising means)
95 floor board bodies 95a to 95e floor board section 114 waist-raising member 121 first mattress section 122 second mattress section 125 band-shaped member (holding means)
M: mattress body

Claims (4)

In a bed device that can raise the user's upper body,
A bed frame,
A fixed floor plate portion 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 floor plate body in which the floor plate portion connected to the fixed floor plate portion is a movable floor plate portion ,
A drive source, a drive shaft that is driven forward and backward in the axial direction by the drive source, a rotary shaft that is driven to rotate in conjunction with the forward and backward drive of the drive shaft, and a raising arm that is driven up and down in response to the rotation of the rotary shaft. And a back-up drive mechanism that drives the movable floor plate portion up and down by the raising arm ,
A waist-raising member that is provided rotatably in the rising direction on the movable floor plate portion driven by the back-raising drive mechanism and is driven in the rising direction to push up the waist of the user;
The rotating shaft of the back lifting drive mechanism is provided to raise the waist raising member when the rotating shaft is rotationally driven by the drive source in a direction opposite to a direction in which the movable floor plate is raised. A waist-raising arm that drives in the direction ,
A bed device comprising: A mattress body that is placed on the floor plate and divided into a plurality of mattress portions, and an end of the mattress portion provided on the movable floor plate portion side is pushed up by rotation of the waist-raising member in a rising direction. The bed device according to claim 1, wherein In a bed device that can raise the user's upper body,
A bed frame,
A floor plate which is divided into a plurality of floor plates along the longitudinal direction of the bed frame, adjacent floor plates are rotatably connected to each other, and a floor plate located at a central portion is fixed to the bed frame. When,
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 body placed on the floor plate and divided into a plurality of mattress portions,
Holding means for holding the mattress portion provided on the movable floor plate portion side slidably with respect to the movable floor plate portion and for sliding the mattress portion in the ascending direction when the movable floor plate portion is turned in the upright direction; A bed device comprising: The bed apparatus according to claim 2 or 3 , wherein the plurality of mattress portions are connected to each other so as to be able to come and go within a predetermined range by connecting means.

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