JP3352320B2 - Wake-up bed equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wake-up type bed apparatus capable of raising and lowering a floor plate on which a user lies.

[0002]

2. Description of the Related Art In a bed apparatus for a sick person, a so-called wake-up type bed apparatus which can assist a patient with reduced physical strength to raise his / her upper body when eating may be used. The wake-up type bed apparatus 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 a floor plate portion corresponding to an upper body of a user. Can be driven up and down by a drive mechanism.

[0003] Therefore, by driving the floor panel in the upright direction, a patient who lies on the floor panel via a mattress can raise the upper body with almost no physical strength.

[0004] By the way, when the patient takes the posture in which the patient rises the upper body by standing the floor plate, the buttocks easily move forward by leaning on the floor plate, and it is difficult to maintain the posture in which the upper body is raised. It may be.

In view of the above, among the plurality of divided floorboards, the two floorboards corresponding to the legs of the patient are formed into a mountain shape in accordance with the rising of the floorboard corresponding to the back in the rising direction. It is common practice to push up to flex the patient's legs, thereby preventing the hips from moving forward when the patient is raised.

[0006]

Indeed, if the two floorboards corresponding to the legs are bent in a mountain shape, it is difficult for the patient to move the buttocks forward, so that the patient can maintain the posture in which the upper body is raised. It will be easier. However, some patients with legs may have to keep their legs extended without bending them, and for such patients, raise the floor to raise the upper body. However, it is preferable that the floor plate corresponding to the leg is not bent.

That is, depending on the condition of the patient, it may be better that the floor plate for bending the legs does not interlock with the rise of the floor plate for raising the upper body. A wake-up bed device that can select whether or not to do so will be required.

[0008] Further, when the floor panel is turned in the upright direction in order to raise the user's upper body, the upright causes the mattress placed on the floor panel to bend.
In the curved mattress, a compressive force in the longitudinal direction is generated on the upper surface side of the curve, and a tensile force in the longitudinal direction is generated on the outer surface side.

When a compressive force is generated on the curved upper surface of the mattress, the compressive force compresses a portion from the hip to the waist of the user. The compression state can be removed by the user lifting the body from the upper surface of the mattress.

[0010] However, in the case of a sick person or an elderly person whose physical strength is remarkably reduced, the body cannot be lifted from the upper surface of the mattress by itself, so that the compression due to the compressive force generated on the upper surface of the curved mattress cannot be removed. Sometimes.

The present invention has been made based on the above circumstances, and an object of the present invention is to selectively provide a floor plate for bending a leg in response to movement of the floor for raising the user's upper body. An object of the present invention is to provide a wake-up type bed device that can be linked. Another object of the present invention is to provide a wake-up type bed device in which the back surface is hardly pressed when the user's upper body is raised.

[0012]

According to the present invention, there is provided a bed frame, a fixed floor plate fixedly provided at an intermediate portion of the bed frame in a longitudinal direction, and a fixed floor plate portion. A back floor plate portion connected to one end side of the fixed floor plate portion, a leg floor plate portion connected to the other end side of the fixed floor plate portion so as to be able to move up and down, and a back lifting drive mechanism for driving the back floor plate portion up and down. A power transmission mechanism for selectively transmitting the power of the back-raising drive mechanism to the leg floor portion, wherein the back-raising drive mechanism includes a driving source and a first rotation driven by the driving source. Shaft, and a first shaft provided on the first rotating shaft.
A first raising arm which rotates together with the rotating shaft to push up the back floor plate, a second rotating shaft, and the leg which is provided on the second rotating shaft and rotates together with the second rotating shaft. The power transmission mechanism includes a first link having one end connected to the first rotation shaft and one end connected to the second rotation shaft. A second link, and a through hole formed at the other end of the first link.
And a large diameter portion at one end formed at the other end of the second link.
Flat top inserted into the slide hole
The first link is attached to the
The second link can be slid or
With a handle that is in one of the non-ridable states
It is characterized by having .

[0013]

According to a second aspect of the present invention, in the first aspect of the present invention, a ridge is formed on an upper surface of each of the floor plates along a longitudinal direction of the bed frame. I do.

According to a third aspect of the present invention, in the first aspect of the present invention, the fixed floor plate and the back floor are connected.
Part and the connecting part between the fixed floor plate and the movable floor plate
At least one end of each floorboard section is
It is formed in a convex shape, and the fitted part
It is characterized by being linked to

According to the first aspect of the present invention, the power of the back lifting drive mechanism is transmitted to the leg floor plate by the power transmission mechanism,
Since it is possible to select to shut off, when the user raises his / her upper body, the leg floor plate can be linked according to the user's preference. According to the third aspect of the present invention, when the floor plate is raised and lowered, the contact resistance between the floor plate and the mattress placed on the upper surface can be reduced by the ridges provided on each floor plate of the floor plate. The mattress can be restricted from moving in the width direction of the floor panel.

According to the second aspect of the present invention, when the floor plate is raised and lowered, the contact resistance between the floor plate and the mattress placed on the upper surface of the floor plate is reduced by the ridges provided on each floor plate of the floor plate. In addition, the mattress can be restricted from moving in the width direction of the floor panel.

According to the third aspect of the present invention, at least one of the connected end portions of each floor plate portion is formed in an uneven shape to be fitted to each other, and the fitted portion is rotatably connected. By doing so, when one of the pair of connected floorboard portions is raised, the upper surface of the connection portion between the floorboard portion and the other floorboard portion has a case where the connection portion is not formed in an uneven shape. It forms a smooth curved surface compared to. Therefore, the curvature of the curvature of the mattress placed on the floor plate can be increased, and accordingly, the degree of pressing the back of the user is reduced.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a wake-up type 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 or the like, and a short rod. The second insertion portion 6 into which the end of the third insertion portion 3 is inserted, and the second arm 19 which is driven to rotate a vertical drive mechanism 11 described later.
a, a mounting portion 7 for pivotally supporting the ends of 19a and 19b,
A mounting hole 9 into which a mounting shaft 8a of a caster 8 with a stopper capable of holding the frame 1 free to run at a predetermined position so that the frame 1 cannot run is integrally formed. 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.

The base frame 1 is provided with the above-described vertical drive mechanism 11. 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 respectively.
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. .
As shown in FIG. 5, a support shaft 21 is provided at the other end of each of the second arms 19a and 19b, and the support shaft 21 is formed in the groove 7a of the mounting portion 7 formed in the first connecting member 4. 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.

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 projecting 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 19 is linked to the rotation.

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 protrudes from both sides in the width direction of the upper and lower frames 31, and the protruding ends thereof have a head board fence 37 as a board body and a foot board fence 38. (Shown in FIG. 3) cap 3 with a flange at the lower end
Holding hole 39 as a holding portion inserted and held through 9a
Is formed. That is, the holding holes 3 of the pair of second connecting members 34 provided on both sides in the width direction of the upper and lower frames 31.
The lower end portions at both ends in the width direction of the board fences 37 and 38 are inserted into and held at 9.

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 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.

The pressing 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.

A back-raising drive mechanism 51 is provided on the upper and lower frames 31. The back raising drive mechanism 51 has a long box 53 provided with a drive motor 52 on one side. A first rotating shaft 54 is provided at one longitudinal end of the box 53, and a second rotating shaft 55 is provided at the other end. In the box 53, the drive motor 5 is provided.
A power transmission mechanism (not shown) for transmitting the rotation of No. 2 to the first rotation shaft 54 is built in. The drive motor 52
1 operates, the first rotating shaft 54 is moved from FIG.
1 (a) is rotated counterclockwise as indicated by the arrow.

One end of a pair of first raising arms 56 is fixed to both ends of the first rotating shaft 54, and a pair of second raising arms is fixed to both ends of the second rotating shaft 55. One end of the upper arm 57 is fixed. 2 at the other end of the first raising arm
Rollers 58 are provided rotatably at predetermined intervals, and the second
At the other end of the arm 57, one roller 58 is rotatably provided.

The rotation of the first rotating shaft 54 can be selectively transmitted to the second rotating shaft 55 by a power switching mechanism 61. This power transmission mechanism 61 is shown in FIG.
As shown in FIG. 13 to FIG. 13, a first link 62 having a U-shaped cross section and having an insertion portion 62a inside is provided. One end of the first link 62 is pivotally attached to a bracket 63 provided at one end of the first rotation shaft 54.

The other end of the first link 62 is provided with a through hole 64 penetrating through both side walls thereof.
Around the through hole 64, a long groove 65a and a pair of engaging holes 65b are formed at 90 ° intervals in the circumferential direction. The long groove 65a and the engaging hole 65b are formed by shifting the 90 ° angle in the circumferential direction of the through hole 64 between one side wall and the other side wall of the first link 62, and the engaging hole 65b is the same. Formed at the location.

The other end of a second link 66 pivotally connected at one end to one end of the second rotary shaft 55 via a bracket 63 is inserted into the insertion portion 62a of the first link 62. Have been. A slide hole 67 is formed at the other end of the second link 66 along the longitudinal direction. A large diameter portion 67a is formed at one end of the slide hole 67.

A bent piece 62b is formed on one side wall of the first link 62 to prevent the other end of the first link 66 inserted into the insertion portion 62a from being pulled out downward. . The first link 62 and the second link 66 are connected by a top 68 having a flat cross section. That is, the top 68 is inserted across the through hole 64 of the first link 62 and the slide hole 67 of the second link 66. The diameter of the top 68 in the short direction is set slightly smaller than the width of the slide hole 67, and the length of the longer one is set substantially equal to the width of the large diameter portion 67a. Therefore, the top 68 can be rotated by the large diameter portion 67a.

Both ends of the top 68 protrude from the outer surfaces of both side walls of the first link 62, and levers 69 formed of synthetic resin are fixed to the protruding ends by screws 71, respectively. A first projection 72 slidably engaged with the long groove 65a on the inner surface of each lever 69;
A pair of engagement holes 65b are provided in accordance with the rotation angle of the lever 69.
And a conical second projection 73 that selectively engages with the second projection 73. The second projection 73 has a notch 7 in the lever 69.
By inserting 4, the engagement hole 65b can be elastically engaged and disengaged.

When the top 68 is located at the large diameter portion 67a of the slide hole 67, the lever 69 can be rotated within a range of 90 degrees in which the first projection 72 can move along the long groove 65a. it can. When the lever 69 is in a substantially horizontal state, the top 68 cannot slide into the slide hole 67. Therefore, in that state, the first link 62
In contrast, the second link 66 cannot be slid by the frame 68. This state is referred to as a locked state of the power switching mechanism 61.

When the lever 69 is rotated 90 degrees from a horizontal state to a substantially vertical state, the top 68 can be slid into the slide hole 67. Therefore,
The second link 66 can slide with the top 68 with respect to the first link 62. This state is referred to as a released state of the power switching mechanism 61. In the locked state and the released state, the second projection 73 is elastically engaged with one of the pair of engagement holes 65b, and the lever 69 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 54,
The rotation is performed between the first link 62 of the power switching mechanism 61 and the second link 62.
Is transmitted to the second rotation shaft 55 via the link 66 of the second rotation shaft 55, so that the second rotation shaft 55 is interlocked.

In the released state, when the first rotation shaft 54 rotates and the first link 62 slides, the slide 68 slides the slide hole 67, and the movement of the first link 62 is reduced. Since it is not transmitted to the second link 66, the second rotation shaft 55 does not rotate. That is, the power transmission mechanism 61 can transmit the rotation of the first rotation shaft 54 to the second rotation shaft 55 or can shut off the rotation.

The first rotating shaft 54 and the second rotating shaft 55
At both ends are a pair of long rods 32 of the upper and lower frames 31.
Are rotatably supported by two receiving portions 75 provided in the middle of each of them. This receiving part 75 is shown in FIG.
It has a side bracket 76 shown in FIG. The side bracket 76 is formed by bending a plate material into a substantially U-shaped cross section, and the bulging portion 7 bulging inward of the upper and lower frames 31.
Seven. The bulging portion 77 is formed with an engaging portion 78 which is open on the upper surface and the side surface.

The engaging portion 78 has a U-shaped bearing portion 79a.
The bush member 79 formed with is attached. That is, as shown in FIG. 10B, a flange 81 is provided on the back surface of the bush member 79 along the bearing portion 79 a, and the flange 81 is engaged with the side surface of the engagement portion 78.
The bush member 79 is attached to the bulging portion 77. The ends of the first and second rotating shafts 54 and 55 are rotatably engaged and held by bearings 79a of the bush member 79.

Each rotating shaft 5 held by the bearing portion 79a
The ends of 4 and 55 are prevented from coming off from the bearing portion 79a by clips 82 elastically attached to the upper surface of the bulging portion 77. Thereby, the back raising mechanism 51 is attached to the upper and lower frames 31.

Further, a pair of holding members 85 for holding the side fence 83 are provided in the middle of the pair of long rods 32 of the upper and lower frames 31 as shown in FIG. As shown in FIG. 9, the holding member 85 includes an upper member 86 that is bent in a substantially U-shape, and one end of the upper member 86
It comprises a lower member 87 having a U-shape, which is rotatably connected by a screw, and a screw 89 for fixing these members in a joined state.

Concave holding portions 86a and 87a for holding and fixing the long rod 32 are formed between the joining surfaces of one end of the upper member 86 and the lower member 87. That is, the holding member 85 is attached so as to sandwich the long rod 32.

A holding hole 91 penetrating through the upper member 86 and the lower member 87 is formed at the other end of the holding member 85 bent downward. By inserting a small-diameter rod member 83a provided at the lower end of the side fence 83 into the holding hole 91, the side fence 83 is removably attached to the side of the upper and lower frames 31. ing.

As shown in FIG. 4, the side fence 83 has a lower portion bent in a C-shape. As a result, the portion above the bent portion of the side fence 83 becomes substantially perpendicular to the holding member 85 bent in a cross shape.

On the upper surface of the upper and lower frames 31, a floor plate 9 is provided.
5 are provided. 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.

A first leg floor plate 95d and a second leg floor plate 95e are sequentially rotatably connected to the other end of the fixed floor plate 95a. As shown in FIG. 2, the ends of the respective floor plate portions that are rotatably connected to each other have concave portions 96a and convex portions 96b.
It is formed in an uneven shape that fits together with
The fitted portion is rotatably connected by a connecting shaft 95f.

Thus, when each of the floor portions is raised by the back-raising drive mechanism 51, the mattress M placed on the upper surface of the floor plate 95 is gently bent.

That is, since the end of each connected floor portion is formed in an uneven shape, when the waist floor portion 95b is raised, the mattress M at the connection portion is fixed as shown in FIG. The two portions, the inner edge 96c of the concave portion 96a of the floor plate portion 95a and the inner edge portion 96c of the concave portion 96a of the waist floor plate portion 95b, are bent at a predetermined angle. This state is shown in FIG.

On the other hand, when the fixed floor plate portion 95a and the waist floor plate portion 95b are not rotatably connected to each other by, for example, hinges without forming an uneven portion at the end portion, the mattress M at the connection portion is shown in FIG. As shown in (c), it bends at only one place and bends at a predetermined angle.

Therefore, when the mattress M is bent at a predetermined angle, the fixed floor plate portion 95a which is rotatably connected is provided.
If the concave portion 96a and the convex portion 96b are formed at the ends of the waist floor plate portion 95b, the curvature of the mattress M at the connecting portion can be increased as compared with the case where the concave portion 96a and the convex portion 96b are not formed. It becomes difficult to press the part.

In this embodiment, each of the floor plate portions 95a to 95
e are connected to each other by forming the connected end portions in an uneven shape, but only the connecting portion between the fixed floor plate portion 95a and the waist floor plate portion 95b having a large angle raised with respect to the fixed floor plate portion 95a. May be uneven.

Each of the floor portions 95a to 95e of the floor plate 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 M is easy to slide in the longitudinal direction of the floor panel body 95 and hard to slide in the width direction. Therefore, when the floor portions 95b to 95e are raised, the mattress M becomes Slide along the ridge 99. Therefore, the floor portions 95b to 95e can be raised smoothly.

The longitudinal end of the floor plate 95 is
At an end of the second leg floor plate portion 95e, a plate-shaped stopper 100 which is in contact with one end of the mattress M is provided. The stopper 100 prevents the mattress M from sliding in the direction of the second leg floor plate portion 95e when the back floor plate portion 95c is rotated in the rising direction and the mattress M is bent. I have. That is, the mattress M slides in the direction of the back floor plate portion 95c.

The first raising arm of the back lifting drive mechanism 51
The pair of rollers 58 provided on the floor 56
3 is provided on the lower surface of the back floor plate portion 95c of FIG. 3, and the roller 58 provided on the second raising arm 56 is provided on the first leg floor plate portion 95d. It is in contact with the lower surface.

The first rotating shaft 5 of the back lifting drive mechanism 51
When the first raising arm 56 is driven in the ascending direction by the rotation of the arm 4, the back floor plate 95c is rotated by the roller 58 as shown in FIG. Backboard part 95
The waist floor plate 95b is interlocked with the rotation of c. Thereby,
The user lying on the mattress M will have his upper body raised.

When the second rotary shaft 55 is linked with the rotation of the first rotary shaft 54 by the power switching mechanism 61, the second
The raising arm 57 is driven in the ascending direction to rotate the first leg floor plate 95d, and the second leg floor plate 95e interlocks with this rotation.

An intermediate portion of a holding member 97 formed by bending a wire into a U-shape is rotatably connected to the lower surface of the second leg floor plate portion 95e. Both ends of the holding member 97 are rotatably connected to the long rod 32 of the upper and lower frames 31. Therefore, the second leg floor plate portion 59e interlocked with the rotation of the first leg floor plate portion 95d becomes the first leg floor plate portion 95d.
Are held by the holding member 97 so as to form a substantially V-shape.

The back-raising drive mechanism 51 has a back-floor plate portion 9 rotated and raised by the first raising arm 56.
Damper mechanism 10 for preventing 5c from suddenly falling down
1 is provided. This damper mechanism 101 has a gas spring 102. As shown in FIGS. 11B, 14 and 15, one end of the gas spring 102 is pivotally attached to a bracket 103 fixed to the first rotating shaft 54, and is provided at the other end of a rod 102a. The U-shaped top 104 is rotatably connected to a connecting member 105 rotatably attached to the second rotation shaft 55. The rod 102a has little resistance to sliding in the protruding direction, and exhibits resistance to sliding in the immersing direction.

That is, the connecting tool 105 is
An upper hole 105a and a lower member 105b are detachably connected to each other, and a mounting hole 107 into which the second rotary shaft 55 is rotatably inserted is formed between the joining surfaces.

The upper member 105a has a pair of mounting pieces 10
8 are provided in parallel with each other, and between these mounting pieces 108, there is provided a mounting portion 109 having a U-shaped cross section which enters the inside of the top 104.

The mounting piece 108, the mounting portion 109, and the top 104 are formed with through holes 110, respectively, and the top 104 is connected to the connecting tool 105 by a support shaft 111 inserted into these through holes 110. ing.

The top 104 connected to the connecting tool 105
Is rotated slightly, so that the inner surface 104
a is joined to the middle outer surface 105c of the mounting portion 109, and the lower end surface 104b is joined to the upper surface 105d of the upper member 105a. By these joining, the connecting tool 105
Is prevented from sliding in the axial direction of the second rotation shaft 55, and the connecting member 105 is prevented from rotating around the axis of the second rotation shaft 55 when the rod 102a advances and retreats. I have.

Therefore, the power transmission mechanism 61 is released and the back-lifting drive mechanism 51 is operated, and the first rotating shaft 5
When only 4 is rotated, the first raising arm 56 is rotated in the ascending direction to raise the back floor plate portion 95c. At this time,
The rod 102a of the gas spring 102 of the damper mechanism 101 slides in the projecting direction with little resistance.

When the first rotating shaft 54 can freely rotate for some reason in the state where the back floor plate portion 95c is raised, the back floor plate portion 95c suddenly moves in the falling direction due to the load of the user. It may try to rotate.
However, in this case, since the rod 102a of the gas spring 102 exhibits resistance to sliding in the immersion direction, the back floor plate portion 95c is prevented from suddenly falling down.

When the power transmission mechanism 61 is locked and the back lifting drive mechanism 51 is operated, the first rotating shaft 5
The gas spring 102 interlocks with the rotation of 4,
Since the connecting member 105 to which the rod 102a is connected does not rotate with respect to the second rotating shaft 55, the rotation of the first rotating shaft 54 is transmitted to the second rotating shaft 55 via the gas spring 102. Never.

That is, even if the damper mechanism 101 is provided in order to prevent the back floor plate portion 95c from suddenly falling down, the damper mechanism 101 will not be able to rotate the first rotary shaft 54 when the power transmission mechanism 61 is released. The rotation is not transmitted to the second rotation shaft 55.

According to the bed apparatus having the above structure, the base frame 1 is formed in a rectangular frame shape by connecting the end of the long rod 2 and the end of the short rod 3 with the first connecting member 4. did. That is, the first connecting member 4 is integrally formed with the first insertion portion 5 and the second insertion portion 6, and each of the insertion portions 5 and 6 has an end portion of the long rod 2 and the short rod 3. Are inserted and fixed, thereby forming the rectangular base frame 1.

Therefore, the work of assembling the base frame 1 only requires the rods 2 and 3 to be inserted and fixed in the insertion portions 5 and 6, and does not involve welding work as in the prior art. It can be easily done without it. If the assembly work can be performed easily, it can be shipped in a disassembled state from the factory and assembled at the purchaser's home or other installation location. Can be facilitated.

Further, the first connecting member 4 of the base frame 1 is provided with the mounting portion 7 for mounting the second arm 19 of the vertical drive mechanism 11 and the mounting hole 9 for mounting the caster 8. , And the second insertion portions 5 and 6 are integrally formed. Therefore, it is not necessary to provide a dedicated part for mounting the second arm 19 or the caster 8, so that the cost can be reduced by reducing the number of parts, and the assembling work can be simplified.

Not only the base frame 1 but also the upper and lower frames 31 are formed by connecting the ends of the long rod 32 and the short rod 33 to the first insertion member formed in the second connecting member 34. Part 36
It is assembled in a rectangular frame shape by inserting and fixing it into the second insertion portion 37.

Since the upper and lower frames 31 can be assembled without welding work as in the prior art, they can be easily assembled without skill. As a result, it is possible to ship in a disassembled state from a factory and assemble it at an installation place, so that the package at the time of shipment can be reduced, and handling such as transportation and lateral holding work can be simplified.

Further, a holding hole 39 for attaching a headboard fence 37 and a footboard fence 38 is formed integrally with the second connecting member 34. Therefore, no dedicated parts are required for mounting the board fences 37, 38, so that the structure can be simplified and the cost can be reduced by reducing the number of parts.

On the other hand, a back-raising drive mechanism 51 is provided on the upper and lower frames 31, and the back-raising drive mechanism 51 connects the first raising arm 56 and the second raising arm 57. It is driven in the rising direction, and the back floor plate portion 95c, the waist floor plate portion 95b, and the first and second leg floor plate portions 95d and 95e of the floor plate body 95 can be driven in the lifting direction.

The above-mentioned back drive mechanism 51 includes a power switching mechanism 6
By operating the lever 69, the power of the drive motor 52 can be transmitted to the second raising arm 57 or cut off.

For this reason, when the user lying on the mattress M only raises his / her upper body and does not want to bend his legs, he operates the lever 69 of the power transmission mechanism 61 and
By making the slide hole 67 slidable,
The power of the drive motor 52 is blocked from being transmitted to the second raising arm 57. Thereby, the first raising arm 5
6, the second raising arm 57 can be prevented from operating, so that only the back floor 95c and the waist floor 95b interlocked with the back floor 95c by the first raising arm 56 can be prevented. It can be raised and the user's upper body can be raised.

When the user wants to raise the upper body and bend the legs, the lever 6 of the power transmission mechanism 61
If the second link 66 can be linked to the movement of the first link 62 by operating the 9 and rotating the top 68 by 90 degrees at the large diameter portion 67 a so as not to slide the top 68 into the slide hole 67, The power of the motor 52 can be transmitted not only to the first raising arm 56 but also to the second raising arm 57.

When the second raising arm 57 is driven, the first leg floor plate 95d rises, and the second leg floor plate 9d is raised.
5e interlocks and these floorboards bend in a substantially U-shape, so that the leg of the user is also bent in a substantially U-shape. Thereby, the user can prevent the body from moving forward by the bent legs when the upper body is raised.

When raising the upper body of the user, the fixed floor plate 9
When the waist floor plate portion 95b is raised with respect to 5a, the mattress M is bent in accordance with the rising. The fixed floor plate section 9
The connected end of the lower floor 5b and the waist plate 95b is a concave 96a.
And the protrusion 96b are fitted into each other to form an uneven shape, and the uneven portion is rotatably connected by a connecting shaft 95f.

For this reason, at the connecting portion of the floor plates 95a and 95b, the mattress M is provided with the inner edge 96c of the recess 96a of the fixed floor plate 95a and the recess 9 of the waist floor plate 95b.
6a is bent at two locations with the inner edge 96c.
Therefore, the mattress M is curved with a larger curvature than when the connecting portion of the floor plate portions 95a and 95b is not formed in an uneven shape, so that the back surface of the user corresponding to the connecting portion of the floor plate portions 95a and 95b. Of the part from the hips to the back is reduced.

Further, each of the floor panel portions 95a to 95 of the floor panel body 95
At 5e, ridges 99 along the longitudinal direction are provided at predetermined intervals in the width direction so that the mattress M placed on the floor plate 95 is easily slid in the longitudinal direction. Therefore, for example, when the back floor plate portion 95c is raised, the mattress M bent by the raising slides smoothly with respect to the back floor plate portion 95, so that the load applied to the vertical drive mechanism 51 at the time of raising is increased. Not only does it not cause the mattress M to be bent so as to rise from the upper surface of the floor panel body 95.

Further, since the mattress M is prevented from moving in the width direction of the floor plate 95 by the ridges 99, even if the floor plates of the floor plate 95 are repeatedly raised and lowered,
The mattress M hardly shifts greatly in the width direction of the floor panel body 95.

[0086]

As described above, according to the first aspect of the present invention, when the back-floor board is raised by the back-raising drive mechanism in order to raise the user's upper body, the movement of the back-floor board is caused by the movement of the legs. A power transmission mechanism capable of selectively interlocking the floor panel is provided.

Therefore, when the user wants to bend the legs to prevent the buttocks from shifting forward when the user raises the back floor and raises the upper body, the power transmission mechanism allows the user to lift the legs floor plate. It can be interlocked with the movement of the back floor, and if the legs do not want to be bent due to poor condition, the leg floor can be selected so as not to be linked with the movement of the back floor. That is, the user can selectively elevate the leg floor plate according to the movement of the back floor plate according to the state of the body and the preference.

According to the second aspect of the present invention, since the ridges along the longitudinal direction of the bed frame are provided on the upper surface of each floor plate portion of the floor plate body, a mattress placed on the upper surface when the floor plate portion is raised and lowered is provided. The contact resistance of the mattress can be reduced, the undulating operation can be reliably performed with a light force, and the mattress can be prevented from moving largely in the width direction of the floor plate portion.

According to the third aspect of the present invention, at least one of the connected end portions of the respective floor plate portions of the floor plate body is formed in an uneven shape to be fitted to each other, and the fitted portion is rotated. By being freely connected, the mattress placed on the floorboard can be curved with a larger curvature than when the connection portion is not formed in an uneven shape. Therefore, the degree of pressing on the back surface of the user is reduced by the curved mattress, so that the feeling of pressure given to the user can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a side view of the same.

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 sectional view of a holding member for holding the side fence in the upper and lower frames.

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. 10 (b) is a rear view of the bush which also supports the rotating shaft for rotation.

FIG. 11A is a front view of a back raising drive mechanism,
(B) is a top view similarly.

12A is a plan view of the power transmission mechanism in a partially sectioned manner, FIG. 12B is a sectional view of the power transmission mechanism taken along the line AA in FIG. 12A, and FIG. Front view.

FIG. 13 is an exploded perspective view of the power transmission mechanism.

FIG. 14 is a perspective view of a connector of the damper mechanism.

FIG. 15 is a cross-sectional view of a coupling of the damper mechanism.

16 (a) is a plan view in which a part of a connecting portion between a pair of floor plate portions is enlarged, FIG. 16 (b) is an explanatory view showing a curved state of the mattress at a connecting portion between the pair of floor plate portions, and FIG. FIG. 4 is an explanatory diagram of a curved state of the mattress when the connecting portion of FIG.

[Explanation of symbols]

 31: vertical frame (bed frame), 51: back raising drive mechanism, 61: power transmission mechanism, 95a: fixed floor panel, 95c: back floor panel, 95d, 95e: leg floor panel.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A61G 7/015 A47C 20/08

Claims (3)

(57) [Claims] 1. A bed frame, a fixed floor plate fixedly provided at an intermediate portion in a longitudinal direction of the bed frame, and a back floor plate connected to one end of the fixed floor plate so as to be able to undulate. A leg floor plate portion connected to the other end side of the fixed floor plate portion so as to be able to move up and down, a back raising drive mechanism for driving the back floor plate portion up and down; A power transmission mechanism for transmitting the power, the back-raising drive mechanism includes a drive source, a first rotation shaft that is rotationally driven by the drive source, and a first rotation shaft that is provided on the first rotation shaft. A first raising arm which rotates together with the rotating shaft to push up the back floor plate portion, a second rotating shaft, and the leg floor plate which is provided on the second rotating shaft and rotates together with the second rotating shaft; And a second raising arm that pushes up the part. A first link having its one end connected to said first rotary shaft, a second link having one end coupled to the second rotary shaft, formed on the other end of the first link
And one end formed at the other end of the second link
The flat hole inserted into the slide hole with the large diameter part
Ma and the top mounted on this top
The second link can be slid with respect to the first link
In a state of normal or non-slidable
A wake-up type bed device having a handle . 2. The rising bed apparatus according to claim 1, wherein a ridge extending along a longitudinal direction of the bed frame is formed on an upper surface of each floor plate. 3. A connecting portion between the fixed floor plate portion and the back floor plate portion.
And the number of connecting portions between the fixed floor plate portion and the movable floor plate portion is small.
The end of each floor plate part is uneven with each other
And the fitted part is rotatable
The wake-up bed device according to claim 1, wherein the bed device is connected.