JPH09187481A - Rising bed type bed apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To bend a leg part against movement of a bed plate part so as to hardly press the back face by a constitution wherein a back bed plate part is connected on one end side of a fixed bed plate part and a leg bed plate part is connected on another end side in freely rising and falling manner and motive power for a back rising driving mechanism is selectively transmitted to the leg bed plate part. SOLUTION: A back rising driving mechanism 51 provided on upper and lower frames 31 transmits rotation of a driving motor 52 to the first rotational shaft 54 and a back bed plate part is pushed up by means of a first rising arm 56 provide thereon and a waist bed plate part 95b is linked thereto to raise the upper half of the body of a user laid down on a mattress. In this instance, if it is needed to bend simultaneously the legs, a lever of a power transmitting mechanism 61 is operated to rotate it at a large diameter part by 90 degrees not so as to slide a top into a slide hole. Under this condition, a second link is interlinked to a first link and the motive power of the driving motor 52 is also transmitted to a second rising arm 57 and a second leg bed plate part 95e is interlinked to a first leg bed plate part 95d to bend it into approximately a chevron shape.

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 device that allows a user to drive a supine floor plate body up and down.

[0002]

2. Description of the Related Art A bed apparatus for a sick person may use a so-called wake-up bed apparatus having a structure capable of assisting a patient whose physical strength is lowered to wake up the upper body. In the wake-up type bed device, a floor plate body provided on the upper surface of the bed frame is divided into a plurality of floor plate portions in the longitudinal direction of the bed frame, and the floor plate portion of the portion corresponding to the upper body of the user. Is configured to be driven up and down by a drive mechanism.

Therefore, by driving the floor plate portion in the standing direction, a patient lying on the floor plate body via a mattress can raise the upper body with little physical force.

By the way, when the patient is in a posture in which the floor plate portion is erected and the upper half of the body is raised, the buttocks tend to move forward due to leaning on the floor plate portion, and it is difficult to maintain the posture in which the upper half body is raised. There are times when

Therefore, of the floor board portions of the floor board body divided into a plurality of pieces, two floor board portions corresponding to the legs of the patient are formed into a mountain shape in accordance with the upward movement of the floor board portions corresponding to the back portion. The push is used to bend the patient's legs, thereby preventing the buttocks from moving forward when the patient is raised.

[0006]

Certainly, if the two floor plate parts corresponding to the legs are bent into a mountain shape, the patient will not be able to move his buttocks forward, and therefore the patient will be able to maintain the posture of raising the upper body. It will be easier. However, depending on the patient who suffers from the leg part, the leg part may have to be kept in an extended state without bending, and for such a patient, the floor plate part for raising the upper body should be raised. However, it is preferable that the floor plate portion corresponding to the leg portion is not bent.

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

When the floor plate portion is rotated in the upright direction to raise the upper half of the user's body, the upright bending causes the mattress placed on the floor plate body to be curved.
In the curved mattress, a compressive force directed inward in the longitudinal direction is generated on the upper surface side of the curve, and a tensile force directed in the longitudinal direction is generated on the outer surface side.

When a compressive force is generated on the curved upper surface side of the mattress, the compressive force compresses a portion extending from the user's buttocks to the waist. The compressed state can be removed by the user lifting the body from the upper surface of the mattress.

However, in the case of a sick person or an elderly person whose physical strength is remarkably reduced, the body cannot lift the body from the upper surface of the mattress by itself, so that it is not possible to eliminate the compression caused by the compressive force generated on the upper surface of the curved mattress. Sometimes.

The present invention has been made in view of the above circumstances, and an object thereof is to selectively select a floor plate portion for bending a leg portion with respect to a movement of the floor plate portion for raising the user's upper body. An object is to provide a wake-up type bed device that can be interlocked. Another object of the present invention is to provide a wake-up type bed device in which the back surface is less likely to be pressed when the user's upper body is raised.

[0012]

According to the present invention as set forth in claim 1, a bed frame, a fixed floor plate portion fixedly provided at an intermediate portion in the longitudinal direction of the bed frame, and the fixed floor plate portion. Of the back floor plate portion that is undulated connected to one end side, the leg floor plate portion that is undulated connected to the other end side of the fixed floor plate portion, and a back raising drive mechanism that drives the back floor plate portion up and down, And a power transmission mechanism for selectively transmitting the power of the back-raising drive mechanism to the leg floor plate portion.

According to a second aspect of the present invention, in the first aspect of the invention, the back-raising drive mechanism includes a drive source,
A first rotating shaft which is rotationally driven by the drive source; a first raising arm which is provided on the first rotating shaft and rotates together with the first rotating shaft to push up the back floor plate portion; Two
And a second raising arm which is provided on the second rotation shaft and rotates together with the second rotation shaft to push up the leg floor plate portion, and the power transmission mechanism has one end of the power transmission mechanism. 1
A first link connected to the rotating shaft of the
The second link connected to the rotating shaft of the first link, the other end of the first link and the other end of the second link are coupled, and the first link is rotated by the rotation of the first rotating shaft. An operating means for selectively transmitting the movement of the link to the second link is provided.

According to a third aspect of the present invention, in the first aspect of the invention, a convex strip is formed on the upper surface of each floor plate portion along the longitudinal direction of the bed frame. To do.

According to a fourth aspect of the present invention, there is provided a bed frame, a fixed floor plate portion fixedly provided at an intermediate portion in the longitudinal direction of the bed frame, and one end side and the other end side of the fixed floor plate portion. A floor plate body composed of a movable floor plate part connected to and, and a back-raising drive mechanism for driving the movable floor plate part up and down, among the respective end parts of the floor plate parts being rotatably connected. Is characterized in that at least one end thereof is formed in a concavo-convex shape that fits with each other, and the fitted portions are rotatably connected.

According to the first and second aspects of the present invention, the power of the back-raising drive mechanism can be selected to be transmitted to or cut off from the leg floor plate portion by the power transmission mechanism. In addition, the leg floor plate portion can be interlocked according to the preference of the user.

According to the third aspect of the present invention, the contact resistance between the floor plate portion and the mattress placed on the upper surface thereof is reduced when the floor plate portion is undulated by the ridges provided on each floor plate portion of the floor plate body. At the same time, the mattress can be prevented from shifting in the width direction of the floor plate portion.

According to the fourth aspect of the present invention, at least one of the connected end portions of each floor plate portion is formed in a concavo-convex shape that fits with each other, and the fitted portion is rotatably coupled. By doing so, when one of the pair of floor plate parts connected is raised, the upper surface of the connection part between the floor plate part and the other floor plate part is not formed in a concavo-convex shape. Makes a smooth curved surface compared to. Therefore, since the curvature of the curvature of the mattress placed on the floor plate can be increased, the degree of pressing the back surface of the user is reduced accordingly.

[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, and this bed apparatus includes 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 with a first connecting member 4. The long rods 2 and the short rods 3 are made of rectangular tubular members.

The first connecting member 4 includes a first inserting portion 5 into which the end portion of the long rod 2 is inserted by die casting of aluminum as shown in FIGS. 5 and 6, and the short rod. The second insertion portion 6 into which the end portion 3 is inserted, and the second arm 19 to which the vertical drive mechanism 11 described later is driven to rotate.
a mounting portion 7 for pivotally supporting the ends of a and 19b;
A caster 8 with a stopper that can hold the frame 1 so that it can travel freely and cannot travel at a predetermined position is integrally formed with a mounting hole 9 into which a mounting shaft 8a is fitted and fixed. 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 driven to move back and forth 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 respectively provided with rotating shafts 16a, 1a.
It is pivotally attached to a first arm 17 provided in the middle of 6b. The rotary shaft 1 is provided in the middle of one of the first arms 17.
A second bracket 18 is provided at a predetermined angle to the first arm 17 with respect to the circumferential direction of 6a, and the drive source 12 is rotatably attached to the second bracket 18. The end of the interlocking rod 14 is pivotally attached 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. .
A support shaft 21 is provided at the other end of each of the second arms 19a and 19b as shown in FIG. 5, and the support shaft 21 is provided in the groove portion 7a of the mounting portion 7 formed in the first connecting member 4. It is inserted into and is rotatably supported. The support shaft 21 is prevented from being pulled out from 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
If the second arm 19 rotates, the second arm 19 is interlocked with 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 are similar to the base frame 1 in that two long rods 32 and short rods 33 are arranged in a rectangular frame shape, and their adjacent ends are connected to the second connecting member 34. Are formed by connecting.

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 in the second connecting member 34.
6 and a second insertion portion 37 which is orthogonal to the first insertion portion 36 and into which the short rod 33 is inserted are formed.

The second connecting member 34 having the above-described structure projects to both sides of the upper and lower frames 31 in the width direction, and the projecting ends thereof are a headboard fence 37 and a footboard fence 38 as board members. Cap 3 with a collar at the lower end (shown in FIG. 3)
Holding hole 39 as a holding portion inserted and held through 9a
Are formed. That is, the holding holes 3 of the pair of second connecting members 34 provided on both sides of the upper and lower frames 31 in the width direction.
The lower end portions of the board rails 37, 38 at both ends in the width direction are inserted and held in the board 9.

As shown in FIG. 1, the upper and lower frames 31
Third brackets 41 are vertically provided on the 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 the support shaft 4 protruding from one side surface of the 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 the end of the one rotary shaft 16a and a support hole 47 of a pipe member 46 provided at the other end of the other rotary shaft 16b, and the rotary shaft 16a, 16b is rotatably supported.

The pressing plate 42 is connected to the third bracket 4
It is fixed to the No. 1 by a screw 45. An L-shaped engagement piece 41b is formed at the lower end of the third bracket 41 and 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 having a drive motor 52 on one side. A first rotating shaft 54 is provided at one end in the longitudinal direction of the box 53, and a second rotating shaft 55 is provided at the other end. The drive motor 5 is provided in the box 53.
A power transmission mechanism (not shown) for transmitting the rotation of 2 to the first rotary shaft 54 is built in. The drive motor 52
When the first rotary shaft 54 operates as shown in FIG.
1 (a) is rotated counterclockwise.

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 connected 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
Two rollers 58 are rotatably provided at predetermined intervals,
A roller 58 is rotatably provided at the other end of the arm 57.

The rotation of the first rotary shaft 54 can be selectively transmitted to the second rotary 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, it has a first link 62 having a U-shaped cross section and having an insertion portion 62a inside. One end of the first link 62 is rotatably attached to a bracket 63 provided at one end of the first rotating shaft 54.

The other end of the first link 62 has a through hole 64 penetrating both side walls of the first link 62.
Around the through hole 64, a long groove 65a and a pair of engaging holes 65b are formed at intervals of 90 degrees in the circumferential direction. The long groove 65a and the engagement hole 65b are formed at one side wall and the other side wall of the first link 62 so that the long groove 65a is offset by 90 degrees in the circumferential direction of the through hole 64, and the engagement hole 65b is the same. Is formed in position.

The other end of the second link 66 pivotally attached to the one end of the second rotary shaft 55 via the bracket 63 is inserted into the insertion portion 62a of the first link 62. Has been done. 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 bending 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 short direction diameter of the top 68 is set to be slightly smaller than the width dimension of the slide hole 67, and the longer diameter is set to be substantially the same as the width dimension 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 project from the outer surfaces of both side walls of the first link 62, and levers 69 made of synthetic resin are fixed to the projecting ends by screws 71. A first protrusion 72 slidably engaged with the long groove 65a is formed on the inner surface of each lever 69,
A pair of engagement holes 65b according to the rotation angle of the lever 69.
And a second conical projection 73 that selectively engages. The second protrusion 73 has a notch 7 in the lever 69.
By inserting 4, the engaging 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 protrusion 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
On the other hand, the second link 66 cannot be slid by the top 68. This state is the locked state of the power switching mechanism 61.

When the lever 69 is rotated by 90 degrees from the horizontal state to the 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 release state of the power switching mechanism 61. In the locked state and the released state, the second protrusion 73 elastically engages with one of the pair of engagement holes 65b, and the lever 69 is held non-rotatably.

In the locked state, when the back-raising drive mechanism 51 operates and the first rotary shaft 54 thereof rotates,
The rotation causes the first link 62 and the second link 62 of the power switching mechanism 61 to rotate.
Since it is transmitted to the second rotating shaft 55 via the link 66, the second rotating shaft 55 is interlocked.

In the released state, when the first rotary shaft 54 rotates and the first link 62 slides, the slide causes the top 68 to slide in the slide hole 67, so that the first link 62 moves. Since it is not transmitted to the second link 66, the second rotating 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 block the rotation.

The first rotary shaft 54 and the second rotary shaft 55.
At both ends are a pair of long rods 32 of the upper and lower frames 31.
It is rotatably supported by two receiving portions 75 provided in the middle of each. This receiving portion 75 is shown in FIG.
It has a side bracket 76 shown in (a). 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 to the upper surface and the side surface thereof.

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 brim 81 is provided along the bearing portion 79a on the back surface side of the bush member 79, and by engaging the brim 81 with the side surface of the engaging portion 78,
The bush member 79 is attached to the bulging portion 77. The ends of the first and second rotary shafts 54, 55 are rotatably engaged with and held by the bearing 79a of the bush member 79.

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

Further, as shown in FIG. 4, a pair of holding members 85 for holding the side fences 83 are provided in the middle of the pair of long rods 32 of the upper and lower frames 31. As shown in FIG. 9, the holding member 85 has an upper member 86 that is bent in a substantially V shape, and a pin 88 at one end of the upper member 86.
It comprises a lower member 87 of the same V shape which is rotatably connected by and a screw 89 for fixing these members in a joined state.

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

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

The lower part of the side fence 83 is bent in a dogleg shape as shown in FIG. As a result, the portion of the side fence 83 above the bent portion is substantially perpendicular to the holding member 85 bent in the V shape.

The floor plate 9 is provided on the upper surface of the upper and lower frames 31.
5 are provided. The floor board 95 is divided into five floor board parts along the longitudinal direction of the upper and lower frames 31 as shown in FIGS. That is, a 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. It is freely connected.

A first leg floor plate portion 95d and a second leg floor plate portion 95e are sequentially rotatably connected to the other end of the fixed floor plate portion 95a. As shown in FIG. 2, the end portions of the floor plate portions that are rotatably connected to each other are a recess 96a and a protrusion 96b.
Is formed into a concavo-convex shape that fits with each other,
The fitted portions are rotatably connected by a connecting shaft 95f.

As a result, when each of the floors 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, when the waist floor portion 95b is raised by forming the end portions of the connected floor portions in a concavo-convex shape, the mattress M is fixed at the connecting portion as shown in FIG. 16 (a). The inner edge portion 96c of the recess 96a of the floor plate portion 95a and the inner edge portion 96c of the recess portion 96a of the waist floor plate portion 95b are bent and curved 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 rotatably connected to each other by, for example, a hinge without forming an uneven portion on the ends, the mattress M at the connecting portion is formed as shown in FIG. As shown in (c), it is bent at only one place and bent at a predetermined angle.

Therefore, when the mattress M is bent at a predetermined angle, the fixed floor plate portion 95a is rotatably connected.
If the concave portion 96a and the convex portion 96b are formed at the ends of the lower floor plate portion 95b and the waist floor plate portion 95b, the curvature of the curvature of the mattress M in the connecting portion can be made larger than that in the case where the concave portion 96a and the convex portion 96b are not formed, so that the buttocks of the user's back It becomes difficult to press the part of.

In this embodiment, each floor plate portion 95a-95 is provided.
Although the respective connected end portions of e are formed in a concavo-convex shape and connected, only the connecting portion between the fixed floor plate portion 95a and the waist floor plate portion 95b having a large angle to be raised with respect to the fixed floor plate portion 95a. May be uneven.

The floor portions 95a to 95e of the floor plate 95 are also provided.
Vent holes 98 are formed in the upper surface, and ridges 99 are provided on the upper surface at a predetermined interval in the width direction over substantially the entire length in the longitudinal direction.

As a result, the mattress M is slippery in the longitudinal direction of the floor plate 95 and less slippery in the width direction. Therefore, when the floor portions 95b to 95e are raised, the mattress M is raised. Slide along the ridge 99. Therefore, the floor portions 95b to 95e can be raised smoothly.

At the end of the floor plate 95 in the longitudinal direction,
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 raising drive mechanism 51.
The pair of rollers 58 provided on the frame 56 is the floor plate 95.
Of the first leg floor plate portion 95d. The roller 58 provided on the second raising arm 56 is engaged with the rail 58a provided on the lower surface of the back floor plate portion 95c of the first leg floor plate portion 95d. It is in contact with the lower surface.

The first rotating shaft 5 of the back-raising drive mechanism 51.
4 is driven to rotate and the first raising arm 56 is driven in the ascending direction, the roller 58 is pressed by the roller 58 and the back floor plate portion 95c is rotated and raised as shown in FIG. Back floor 95
The waist floor plate portion 95b is interlocked with the rotation of c. Thereby,
A user lying on the mattress M will wake up.

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

On the lower surface of the second leg floor plate portion 95e, a middle portion of a holding member 97 formed by bending a wire material in a U shape is rotatably connected. 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 that is interlocked with the rotation of the first leg floor plate portion 95d is the first leg floor plate portion 95d.
It is held by the holding member 97 so as to have a substantially V-shape.

The back raising drive mechanism 51 has a back floor plate portion 9 which is rotated and raised by the first raising arm 56.
Damper mechanism 10 for preventing 5c from suddenly falling
1 is provided. The damper mechanism 101 has a gas spring 102. As shown in FIGS. 11 (b), 14 and 15, the gas spring 102 has one end pivotally attached to the bracket 103 fixed to the first rotating shaft 54 and is provided at the other end of the rod 102a. The U-shaped top 104 thus formed is rotatably connected to a connector 105 rotatably attached to the second rotating shaft 55. The rod 102a has almost no resistance when it slides in the protruding direction, and exhibits resistance when it slides in the retracted direction.

That is, the connecting member 105 is provided with the screw 106.
The upper member 105a and the lower member 105b are disassembled so as to be freely disassembled, and a mounting hole 107 into which the second rotary shaft 55 is rotatably inserted is formed between the joint surfaces of these members.

A pair of mounting pieces 10 is attached to the upper member 105a.
8 are erected parallel to each other, and between these mounting pieces 108, a mounting portion 109 having a U-shaped cross section is provided to be inserted into the top 104.

Through holes 110 are formed in each of the mounting piece 108, the mounting portion 109 and the top 104, and the top 104 is connected to the connecting tool 105 by a support shaft 111 inserted through the 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 outer surface 105c of the intermediate portion 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 rotating shaft 55, and the connecting member 105 is prevented from rotating around the axis of the second rotating shaft 55 when the rod 102a moves back and forth. There is.

Therefore, the power transmission mechanism 61 is released and the back-raising drive mechanism 51 is operated, and the first rotary 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 protruding direction with almost no resistance.

When the first rotary shaft 54 becomes freely rotatable for some reason while the back floor plate portion 95c is raised, the back floor plate portion 95c suddenly moves in the reclining direction due to the load of the user. I may try to rotate.
However, in this case, the rod 102a of the gas spring 102 resists sliding in the retracted direction, which prevents the back floor plate portion 95c from falling suddenly.

When the power transmission mechanism 61 is locked and the back raising drive mechanism 51 is operated, the first rotary shaft 5
The gas spring 102 interlocks with the rotation of 4, but
Since the connecting tool 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 falling suddenly, the damper mechanism 101 does not move the first rotary shaft 54 when the power transmission mechanism 61 is in the released state. 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 ends of the long rod 2 and the short rod 3 with the first connecting member 4. did. That is, the first connecting member 4 is integrally formed with the first inserting portion 5 and the second inserting portion 6, and the end portions of the long rod 2 and the short rod 3 are formed on the respective inserting portions 5, 6. The base frame 1 having a rectangular shape is formed by inserting and fixing the base frames.

Therefore, the base frame 1 can be assembled only by inserting and fixing the rods 2 and 3 into the insertion portions 5 and 6, which does not involve welding work as in the prior art, and therefore requires skill. It can be done easily without doing so. If the assembly work can be done easily, it can be shipped from the factory in a disassembled state and assembled at the purchaser's home or other installation location, so the packaging at the time of shipment can be reduced, and handling such as transportation and lateral holding work Can be facilitated.

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

Not only the base frame 1 but also the upper and lower frames 31 are inserted at the ends of the long rods 32 and the short rods 33 into the second connecting member 34. Part 36
It is assembled in a rectangular frame shape by being inserted and fixed in the second insertion portion 37 and.

Therefore, since the upper and lower frames 31 can be assembled without welding work as in the conventional case, they can be easily assembled without requiring any skill. As a result, it is possible to ship the product in a disassembled state from the factory and assemble it at the installation site. Therefore, it is possible to reduce the packing shape at the time of shipping and facilitate handling such as transportation and lateral holding work.

Further, the second connecting member 34 is integrally formed with a holding hole 39 for attaching the headboard fence 37 and the footboard fence 38. Therefore, since no dedicated parts are required to attach the board fences 37 and 38, it is possible to reduce the number of parts and simplify the configuration and reduce the cost.

On the other hand, a back raising drive mechanism 51 is provided on the upper and lower frames 31, and the first raising arm 56 and the second raising arm 57 are driven by the back raising drive mechanism 51. 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 rising direction by being driven in the rising direction.

The back drive mechanism 51 includes a power switching mechanism 6
1 is provided, and by operating the lever 69, the power of the drive motor 52 can be transmitted to or cut off from the second raising arm 57.

Therefore, when the user lying on the mattress M raises only his / her upper body and does not want to bend his / her legs, he / she operates the lever 69 of the power transmission mechanism 61 to move the top 68.
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 launch arm 5
Since only 6 operates and the second raising arm 57 can be prevented from operating, only the back floor plate portion 95c and the waist floor plate portion 95b interlocking therewith are prevented by the first raising arm 56. Can be raised to wake up the user's upper body.

When the user wants to bend the legs while raising the upper body, the lever 6 of the power transmission mechanism 61 is used.
By operating 9 to rotate the top 68 by 90 degrees at the large diameter portion 67a so as not to slide into the slide hole 67, the second link 66 can be interlocked with the movement of the first link 62. 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 portion 95d rises, and the second leg floor plate portion 9 is added to it.
5e are interlocked with each other, and these floor plate portions are bent in a substantially V shape, so that the legs of the user are also bent in a substantially V shape. As a result, the user can prevent the body from moving forward due to the bent legs when the upper body is raised.

When raising the upper body of the user, the fixed floor plate portion 9
When the waist floor plate portion 95b is raised with respect to 5a, the mattress M is curved according to the rise. Fixed floor board part 9
5b and the waist floor plate portion 95b are connected to each other at a concave portion 96a.
And the convex portion 96b are fitted into each other to form an uneven shape, and the uneven portion is rotatably connected by a connecting shaft 95f.

Therefore, in the connecting portion of the floor plate portions 95a and 95b, the mattress M has the inner edge portion 96c of the recess portion 96a of the fixed floor plate portion 95a and the recess portion 9 of the waist floor plate portion 95b.
The inner edge portion 96c of 6a is bent or curved at two points.
Therefore, the mattress M is curved with a large curvature as compared with the case where the connecting portions of the floor plate portions 95a and 95b are not formed in a concavo-convex shape, and therefore the back surface of the user corresponding to the connecting portions of the floor plate portions 95a and 95b. The degree of pressure on the part from the buttocks to the back will be reduced.

Further, each floor plate portion 95a-9 of the floor plate 95 is
5e is provided with ridges 99 extending along the longitudinal direction at predetermined intervals in the width direction so that the mattress M placed on the floor plate 95 can easily slide in the longitudinal direction. Therefore, for example, when the back floor plate portion 95c is raised, the mattress M bent by the rise smoothly slides with respect to the back floor plate portion 95, so that the load applied to the vertical drive mechanism 51 at the time of rising is increased. Not only is the mattress M not bent, but the mattress M is not bent so as to float above the upper surface of the floor plate 95.

Furthermore, since the mattress M is prevented from moving in the width direction of the floor plate 95 by the ridge 99, even if the floor plates of the floor plate 95 are repeatedly undulated,
The mattress M rarely shifts in the width direction of the floor plate 95.

[0086]

As described above, according to the inventions of claims 1 and 2, when the back raising plate is raised by the back raising drive mechanism in order to raise the upper half of the user, the back floor plate is raised. A power transmission mechanism that can selectively interlock the floor plate with the movement of

Therefore, when the user wants to prevent the buttocks from shifting forward by bending the legs when raising the back floor plate and raising the upper half of the body, the user can move the leg floor plate by the power transmission mechanism. It is possible to interlock with the movement of the back floor plate portion, and when it is not desired to bend the leg floor plate due to the poor condition of the leg portion, the leg floor plate portion can be selected not to be interlocked with the movement of the back floor plate portion. That is, the user can selectively raise the leg floor plate portion in accordance with the movement of the back floor plate portion according to the physical condition or preference.

According to the third aspect of the present invention, since the ridges are provided on the upper surface of each floor plate portion of the floor plate member along the longitudinal direction of the bed frame, the mattress to be placed on the upper surface when the floor plate portion is raised and lowered. The contact resistance of the mattress can be reduced, and 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 fourth aspect of the present invention, at least one of the connected end portions of each floor plate portion of the floor plate member is formed in a concavo-convex shape that fits with each other, and the fitted portion is rotated. Since the mattresses are freely connected, the mattress placed on the floor plate can be curved with a larger curvature than in the case where the connecting portion is not formed in an uneven shape. Therefore, since the curved mattress reduces the degree of pressure on the back surface of the user, it is possible to reduce the feeling of pressure given to the user.

[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 connecting structure of an up-down drive mechanism and an up-down frame.

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

FIG. 9 is a sectional view of a holding member for holding the side fences on the upper and lower frames.

FIG. 10A is a perspective view of a receiving portion for mounting the rotary shaft of the back-raising drive mechanism to the upper and lower frames, and FIG. 10B is a rear view of the bush that also rotatably supports the rotary shaft.

FIG. 11A is a front view of the back-raising drive mechanism,
Similarly, (b) is a plan view.

FIG. 12 (a) is a plan view of the power transmission mechanism partially in section, FIG. 12 (b) is a sectional view taken along line AA of FIG. 12 (a), and FIG. Front view.

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

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

FIG. 15 is a sectional view of a coupler of the damper mechanism.

FIG. 16 (a) is an enlarged plan view of a part of a connecting portion of a pair of floor plate portions, FIG. 16 (b) is an explanatory view of a curved state of a mattress in the connecting portion of a pair of floor plate portions, and FIG. Explanatory drawing of the 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 board part, 95c ... Back floor board part, 95d, 95e ... Leg floor board part.

Claims (4)

[Claims] 1. A bed frame, a fixed floor plate portion fixedly provided at an intermediate portion in the longitudinal direction of the bed frame, and a back floor plate portion undulatingly connected to one end side of the fixed floor plate portion. A leg floor plate portion undulatingly connected to the other end side of the fixed floor plate portion, a back raising drive mechanism for driving the back floor plate portion up and down, and power of the back raising drive mechanism is selected for the leg floor plate portion. A wake-up type bed apparatus comprising: 2. The back-raising drive mechanism includes a drive source, a first rotary shaft that is rotationally driven by the drive source, and a first rotary shaft that is provided on the first rotary shaft and rotates together with the first rotary shaft. A first raising arm that pushes up the back floor plate portion, a second rotation shaft, and a second raising shaft that is provided on the second rotation shaft and rotates together with the second rotation shaft to push up the leg floor plate portion. An upper arm, the power transmission mechanism includes a first link having one end connected to the first rotation shaft, a second link having one end connected to the second rotation shaft, and The other end of the first link and the second
And an operating means for selectively transmitting the movement of the first link due to the rotation of the first rotation shaft to the second link, while being connected to the other end of the second link. The rising bed apparatus according to claim 1. 3. The wake-up type bed apparatus according to claim 1, wherein a convex strip is formed on the upper surface of each floor plate portion along the longitudinal direction of the bed frame. 4. A bed frame, a fixed floor plate portion fixedly provided at a midway portion in the longitudinal direction of the bed frame, and a movable floor plate portion connected to one end side and the other end side of the fixed floor plate portion, respectively. And a back-raising drive mechanism for driving the movable floor plate portion to move up and down, and at least one end portion of the respective end portions of the floor plate portions which are rotatably connected is fitted to each other. 1. A wake-up type bed apparatus, which is formed in a concavo-convex shape to be fitted, and the fitted portion is rotatably connected.