JP3012781B2 - 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 bed apparatus particularly suitable for sick people.

[0002]

2. Description of the Related Art In a bed apparatus for a sick person, a so-called wake-up bed apparatus is sometimes used to assist a patient with reduced physical strength to raise his / her upper body when eating. The wake-up type bed device divides a floor plate provided on an upper surface of a bed frame into a plurality of floors in a longitudinal direction of the bed frame, and a floor portion corresponding to an upper body of a user. The back floor portion can be driven up and down by a drive mechanism.

Accordingly, if the back floor is driven in the upright direction, a patient who lies on the floor plate via a mattress can raise the upper body with almost no physical strength.

[0004] Conventionally, the above-mentioned floor plate body is,
It has a fixed floor fixed to the bed frame, and one end of the back floor is rotatably connected to the fixed floor.

[0005] Therefore, when the above-mentioned back floor is driven by the drive mechanism in the upright direction in order to raise the patient's upper body, the back floor is rotated up in the upright direction about the connection with the fixed floor as a fulcrum. Become.

[0006] When the backfloor is turned up in the upright direction, the mattress placed on the floor plate is bent while pressing the back of the patient. Because the mattress has a predetermined thickness, when it is bent along with the standing of the back floor portion, a compressive force is generated along the inside in the longitudinal direction on the upper surface which is inside the curve, and the lower surface which is the outer surface. Generates a tensile force along the outside in the longitudinal direction.

[0007] Therefore, a compressive force generated on the upper surface of the mattress also acts on the back of the patient whose upper body is raised while being pressed by the upper surface of the mattress. And the thighs are pressed backwards, which can cause pressure on the body, especially the abdomen.

It is good if the patient has physical strength and can lift the back of the body from the upper surface of the mattress by himself and remove the compressive force acting on the back, but if the patient does not have enough physical strength, the compressive force should be reduced. It may not be able to be removed on its own, in which case the patient may suffer more.

[0009]

As described above, in the conventional wake-up type bed apparatus, when the back floor is raised in the upright direction, the upper surface of the mattress placed on the floor plate presses the back of the patient. While being bent, the compressive force generated on the upper surface of the mattress inward in the longitudinal direction strongly acts on the back surface of the patient.

[0010] Therefore, unless the body is lifted from the mattress by itself, the compressive force applied to the back cannot be removed, so that the body, especially the abdomen, is pressed when raising the back,
It may cause discomfort to the user, especially when the user is a sick or elderly person, who can lift the body from the top of the mattress and can not remove the compressive force applied to the body by himself.
In some cases, the pain given to the user increased.

The present invention has been made based on the above circumstances, and an object of the present invention is to make it difficult for a compressive force generated on the upper surface of a mattress to act on the back surface of a user when raising the back. It is an object of the present invention to provide a wake-up type bed device capable of reducing discomfort and pain given to a person.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a floor plate for mounting a mattress on a rectangular bed frame is provided, and a part of the floor plate is undulated. In the wake-up type bed device formed on the back floor, a driving unit for raising and lowering the back floor is provided at one end which is a base end side when the back floor is raised and lowered by the driving unit. A slide body, a guide portion provided along the longitudinal direction of the bed frame and slidably supported by the slide body, and one end pivotally connected to one end of the back floor and the other end to the bed frame. And a connecting link for sliding the slide body along the guide portion when the back floor portion is raised and lowered by the driving means.

[0013]

According to the above construction, when the back floor is erected, the base of the back floor slides rearward. Therefore, the pressing force generated when the back floor is raised to press the back surface of the user is reduced, and the compression force acting on the back surface of the user is also reduced with the reduction in the pressing force.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. The bed apparatus shown in FIG. The base 1 is formed in a rectangular frame shape, and casters 2 with stoppers are provided at four corners on the lower surface. A pair of brackets 3 are provided upright at both ends in the longitudinal direction on both sides of the base 1 at corresponding positions in the width direction. A pair of rotating shafts 5 constituting an up-down link mechanism 4 are rotatably mounted on each pair of brackets 3. A pair of levers is provided at each end of each rotating shaft 5.
6 is fixed at one end. Both ends of the support shaft 7 are fixed to the other end of each pair of levers 6. Rollers 8 are rotatably provided at both ends of the pair of support shafts 7, respectively.

One end of a first arm 9 is fixed to the middle of one rotating shaft 5 and the second arm 9 is fixed to the middle of the other rotating shaft 5.
The middle part of the arm 11 is fixed. One end and the other end of an interlocking rod 12 are pivotally connected to the other end of the first arm 9 and one end of the second arm 11 projecting downward. A vertical drive mechanism 13 is provided on the upper surface of the intermediate portion of the
Is provided. The vertical drive mechanism 13 includes a drive source 14 swingably attached to the interlocking rod 12 and a drive shaft 15 driven forward and backward by the drive source 14.
The tip of the drive shaft 15 is pivotally connected to the other end of the second arm 11.

When the vertical drive mechanism 13 is actuated and its drive shaft 15 is driven in the projecting direction, the second arm 11 rotates, and one of the rotary shafts 5 interlocks with the rotation. When the second arm 11 rotates, the rotation causes the interlocking rod 12 to slide in the direction indicated by the arrow a in FIG. 1, so that the first arm 9 rotates in conjunction therewith. .

If the first arm 9 and the second arm 11 rotate in the same direction, each pair of levers 6 having one end connected to each arm stand up from the down state. Rotate in the direction. Rollers 8 at both ends of a spindle 7 connected to each lever 6
Are rotatably engaged with guide rails 22 having a U-shaped cross section provided on inner surfaces on both sides of a mounting frame 21 having a rectangular frame shape. Therefore, when the pair of levers 6 rotate in the upright direction, the rotation causes the above-described mounting frame 2 to rotate.
1 can be raised via a roller 8.

In order to prevent the lifted mounting frame 21 from freely moving along the longitudinal direction by the engagement between the guide rail 22 and the roller 8, the mounting frame described above is used. One end and the other end of the connection link 23 are rotatably connected to the arm 21 and the lever 6.
By detaching the base 1, the mounting frame 21 can be disassembled from the base 1.

A support frame 25 as a bed frame having a rectangular frame shape larger than the mounting frame 21 is removably mounted and fixed on the upper surface of the mounting frame 21. I have. As shown in FIGS. 2 and 1, the supporting frame 25 has four vertical bars 27 attached to both ends of four horizontal bars 26 along the width direction.

A floor plate 28 is placed on the upper surface of the support frame 25 as shown in FIG. This floor plate 28
Is a fixed floor 28a fixed to the middle of the support frame 25 in the longitudinal direction, a back floor 28b arranged at one end of the fixed floor 28a and driven up and down as described later, and a fixed floor 28a. A first rotatably connected to the other end side
And a second leg floor 28d. A bendable mattress M is placed on the upper surface of the floor plate 28.

As shown in FIG. 1, a drive mechanism 31 for raising and lowering the back floor 28b is provided on the lower surface of the two horizontal rails 26 located in the middle of the support frame 25. ing. The drive mechanism 31 has a box 32 containing a drive source (not shown). At one end in the longitudinal direction of the box 32, a drive shaft 33 that is rotationally driven by the drive source is provided along the width direction of the support frame 25.

Both ends of the drive shaft 33 are connected to the support frame.
The arm 25 is rotatably supported by a pair of support rods 34 provided at a predetermined interval between a pair of horizontal rods 26 on one end side in the longitudinal direction. One end of a first arm 35 is fixed to both ends of the drive shaft 33 projecting from each support rod 34. At the other end of each first arm 35, a first roller 35a is rotatably provided. These first rollers 35a are in rolling contact with the lower surface of the back floor 28b as shown in FIGS. 5 (a) and 5 (b).

The fixed floor 28 is attached to the back floor 28b.
1 and 5 at both ends in the width direction of the lower surface of the one end located on the side a.
One end of the movable member 36 is fixed as shown in FIGS. At the other end of the movable member 36, a roller 37 serving as a slide body is rotatably provided. This row
A guide rail 3 serving as a guide portion is provided on an inner surface at one end in the longitudinal direction of the vertical rod 27 of the support frame 25.
8 so as to be able to roll freely.

One end of a connection link 39 is pivotally connected to the middle of the pair of support rods 34, respectively. The other end of each connecting link 39 is connected to a connecting shaft 41 (see FIG. 5) extending along the width direction at one end on the lower surface side of the back floor 28b.
(Shown in (a) and (b)).

Therefore, when the first arm 31 is rotationally driven in the ascending direction by the drive mechanism 31, the back floor 28b is raised in the upright direction as shown in FIGS. 5 (a) to 5 (b). Is driven.

The lower end of the back floor 28b is connected to the link 3
9 is connected to the support rod 34. Therefore, when the back floor portion 28b is turned in the upright direction indicated by the arrow X in the figure, the connection link 39 turns in the arrow Y direction. (Lower end) moves rearward. That is, the roller 37 of the movable member 36 provided at one end of the back floor portion 28b is moved to the position shown in FIG.
(A), the user slides in the direction indicated by arrow Z, that is, in the direction away from the back of the user lying on the mattress M.

Therefore, the upper body is raised by the back floor 28b which rises while moving backward, and the portion of the mattress M bent by the back floor 28b presses the back of the user's upper body. Power is weakened. As a result, the degree of the compressive force generated on the upper surface side by bending the mattress M acting on the back surface of the user is reduced, so that the user is less likely to be pressed on the abdomen and the like when the upper body is raised. .

A driven shaft 42 is provided at a portion of the support frame 25 corresponding to the first leg floor 28c.
5 is rotatably mounted along the width direction. The driven shaft 42 is connected to the driven shaft 42 by a power transmission mechanism 43.
Is transmitted.

One end of a pair of second arms 44 is fixed to both ends of the driven shaft 42. At the other end of each second arm 44, a second roller 45 is rotatably provided. Each second roller 45 is connected to the first leg floor 28.
Rolls on the lower surface of c.

Accordingly, if the driven shaft 42 rotates in conjunction with the rotation of the drive shaft 33 as described later, and each second arm 44 is driven in a direction of rising from a lying state, the second shaft 44 is driven. As shown by the chain line in FIG. 2, the first leg floor portion 28c is pushed up by the second roller 45, so that the second leg floor portion 28d also moves therewith. That is, the back floor 28
b, the first leg floor portion 28c and the second leg floor portion 28c are raised.
Is bent upward in a mountain-like shape.

As shown in FIG. 1, the power transmission mechanism 43 has a first transmission link 48 having one end fixed to an intermediate portion of the drive shaft 33. One end of a strip-shaped interlocking rod 49 is pivotally connected to the other end of the first transmission link 48.
At the other end of the interlocking rod 49, as shown in FIG.

In the middle of the driven shaft 42, FIG.
As shown in (b), one end portions of the pair of second interlocking links 52 are fixed at predetermined intervals. These second
The other end of the interlocking link 52 is provided with an engagement shaft 53. The engaging shaft 53 includes a power cutoff mechanism 61 to be described later in which the engaging recess 51 formed at the other end of the interlocking rod 49 is provided.
Is to be dismissed.

Accordingly, the first transmission link 48 swings in the direction shown by the arrow in FIG. 1 in conjunction with the rotation of the drive shaft 33 in a state where the engagement recess 51 is engaged with the engagement shaft 53. For example, since the interlocking rod 49 slides in the direction indicated by the arrow in FIG. 4B, the second interlocking link 52 rotates in the direction indicated by the arrow in FIG. Thus, the second arm 44 is driven in the upright direction from the down state.

In the middle of the interlocking rod 49, the interlocking rod 4
The power cutoff mechanism 61 is provided for appropriately releasing the engagement between the engagement recess 51 and the engagement shaft 53. As shown in FIG. 1, the power cut-off mechanism 61 has an operating shaft 62 which is rotatably mounted along the width direction at a middle portion of the support frame 25 in the longitudinal direction. An operation lever 63 is provided at one end of the operation shaft 62 so that the operation shaft 62 can be rotated.

As shown in FIG. 3, one end of an engaging / disengaging link 63 is fixed to a middle portion of the operating shaft 62. A pair of lift links 64 are provided on both sides of the other end of the engagement / disconnection link 63.
Is pivotally connected by a pin 65.

At one end of the lift link 64, as shown in FIGS. 3 and 4 (a) and 4 (b), a holding recess 66 is formed which is open at one end in the width direction, whereby the one end is hooked. It is in a state. A pair of lift links 6
Numeral 4 is provided so as to sandwich a middle part of the interlocking rod 49, and a lift pin 67 located on the lower surface side of the interlocking rod 49 is provided at the other end.

FIG. 4A shows a state in which the holding recess 66 is engaged with the operating shaft 62. In this state, the lift pin 67 lifts the interlocking rod 49.
As a result, the engagement recess 51 formed at the other end of the interlocking rod 49 is disengaged from the engagement shaft 53 of the interlocking link 52. Therefore, even if the drive shaft 33 is rotationally driven,
The transmission of the rotation from the interlocking rod 49 to the driven shaft 42 via the interlocking link 52 is blocked.

When the operating shaft 62 is rotated by 270 degrees in the direction of the arrow shown in FIG. 4B from the state shown in FIG. 4A, the rotation of the lift link 6
The holding recess 66 of 4 is disengaged from the operating shaft 62, and the lift link 64 is lowered. That is, the lift link 64 corresponds to FIG.
It descends from the state of (a) to the position shown in FIG.

When the lift link 64 is lowered, the other end of the interlocking rod 49 which has been lifted by the lift pin 67 also lowers, so that the engagement recess 51 is engaged with the engagement shaft 53 provided at the end of the interlocking link 52. Engage. Therefore,
In this state, when the drive shaft 33 is driven to rotate, and the interlocking rod 49 slides in the direction shown by the arrow in the figure according to the rotation, the interlocking link 52 turns in conjunction with the slide. The shaft 42 rotates.

According to the bed apparatus having the above structure, FIG.
As shown in (b), the drive mechanism 31 is engaged with the engagement recess 51 of the interlocking rod 49 and the engagement shaft 53 of the interlocking link 52.
Is operated, first, the drive shaft 33 rotates, and the first arm 35 is linked to the rotation. Therefore, the first arc
The first roller 35a attached to the floor 35 is the floor plate 2
8, the upper body of the user who is lying on the mattress M is raised.

On the back floor 28b, one end on the side of the fixed floor 28a, which is a lower end when standing up, is slidably supported by a roller 37 provided on a movable member 36. -Is rotatably supported by the arm 25. For this reason, the back floor portion 28b is
When the user stands up from the state shown in FIG. 5A as shown in FIG. 5B, one end of the fixed floor 28a, which is the lower end, retreats rearward.
Accordingly, the force of the bent portion pressing the back of the user is reduced.

As a result, even if a compressive force is generated on the upper surface side by bending the mattress M, the compressive force is less likely to be transmitted to the back of the user, so that the user's body, especially the abdomen, is compressed. This can reduce or almost eliminate discomfort and pain.

On the other hand, when the drive shaft 33 is driven to rotate, the interlocking rod 49 slides in the direction shown by the arrow in FIG. An engagement recess 51 formed at the other end of the interlocking rod 49 is engaged with an engagement shaft 53 of the interlocking link 52.
Therefore, the interlocking link 52 rotates in the direction indicated by the arrow in the figure, and causes the driven shaft 42 to interlock with the rotation. Therefore, since the second arm 44 provided on the driven shaft 42 rotates in the direction in which the second arm 44 rises from the lying state, the arm 44
The second roller 45 provided at the tip of the first leg floor 2
Push up 8c.

When the first leg floor 28c is pushed up,
Since the second leg floor 28d is interlocked with these, these floors 28c and 28d are bent in a U-shape as shown by a chain line in FIG. 2 to bend the leg of the user.

Therefore, even if the user is raised, the buttocks are difficult to move forward by bending the legs. That is, the user can easily maintain the posture in which the upper body is raised on the mattress M.

Even if the user raises his upper body,
Depending on the condition of the user, it may be better not to bend the legs. In such a case, the power cutoff mechanism 61
The operating shaft 62 is moved by the handle 63 provided in FIG.
It is rotated about 270 degrees in the direction of the arrow from the state shown in (b). As a result, the lift link 64 is raised to the state shown in FIG. 4A, and the holding recess 66 is engaged with the operating shaft 62, and the raised state is maintained.

When the lift link 64 is raised, the other end of the interlocking rod 49 on which the engagement recess 51 is formed is lifted, and the engagement recess 51 is disengaged from the engagement shaft 53, and the interlocking rod 4
Since the connection state between the drive shaft 9 and the interlocking link 52 is released, even if the drive shaft 33 rotates, the driven shaft 42 does not interlock with the rotation.

Therefore, even if the back floor 28b is raised in the upright direction, the first and second leg floors 28c and 28d do not bend in conjunction with each other, so that the leg of the user is bent. There is no such thing.

In other words, the user selects whether or not to bend the first and second leg members 28c and 28d in a U-shape in response to the elevation of the back floor portion 28b by operating the power cutoff mechanism 61. Can be.

The present invention is not limited to the above embodiment, but can be variously modified. For example, in the above-mentioned embodiment, the guide rail 38 is provided on the support frame 25 as a guide portion. However, the guide portion is formed with a long groove in the support frame 25 instead of the guide rail 38, and the guide groove 38 is formed therein. A roller 37 as a slide body may be slidably provided.

Further, instead of the roller 37 as a slide body, a key is provided on the movable member 36 so as to be rotatable.
May be slidably engaged with a key groove formed in the support frame 25. In short, when the back floor portion 28b is turned upright, it is interlocked with the rotation of the connection link 39. Any structure may be used as long as one end thereof can be slid along the longitudinal direction of the support frame 25.

[0052]

As described above, according to the present invention, when the back floor of the floor plate is rotated in the ascending direction in order to raise the user's upper body, the base end side of the back floor is moved backward. The sliding prevents the portion of the mattress bent by the back floor from strongly pressing the back of the user.

Therefore, even if a compressive force is generated on the upper surface of the mattress by bending the mattress, the compressive force is prevented from strongly acting on the back of the user, and the abdomen is almost always compressed. Since it disappears, discomfort and pain given to the user can be reduced or almost eliminated.

[Brief description of the drawings]

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

FIG. 2 is a side view of the overall configuration.

FIG. 3 is a perspective view of the power cutoff mechanism.

FIG. 4 is an explanatory view of the operation of the power cutoff mechanism.

FIG. 5 is an explanatory view of the movement when the back floor portion is similarly rotated and raised.

[Explanation of symbols]

25 support frame, 28 floor plate, 28a fixed floor, 28b back floor, 28c first leg floor, 28d
2nd leg floor part, 31 ... drive mechanism, 43 ... power transmission mechanism,
61 Power cutoff mechanism.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47C 20/04 A61G 7/00 A61G 7/018

Claims (1)

(57) [Claims] 1. A rising bed device in which a floor plate for mounting a mattress on a rectangular bed frame is provided, and a part of the floor plate is formed on an up-and-down back floor portion. Driving means for driving the floor up and down, a slide body provided at one end serving as a base end when the back floor is raised and lowered by the driving means, and provided along the longitudinal direction on the bed frame; A guide part slidably supported by the slide body, one end pivotally connected to one end of the back floor, and the other end pivotally connected to the bed frame, the back floor being provided by the driving means. And a connecting link for sliding the slide body along the guide portion when the bed is raised and lowered.