JP3001378B2 - 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 bed apparatus which can automatically move a patient lying on a bed frame via a mattress in the width direction of the mattress without manual operation.

[0002]

2. Description of the Related Art For example, in a bed apparatus for a hospital or a bed apparatus for a nursing care used at home, a patient who lies on a mattress and cannot move on her own is woken up, and clothes are changed. In such a case, for example, when exchanging a sheet of a mattress, the above-described operation is performed after the patient is drawn to one end of the mattress in the width direction. Also, in order to prevent a patient's pressure sore, a caregiver moves the patient at regular intervals to change the direction.

[0003] However, it is not easy to move a patient who cannot move on his / her own on a mattress, which imposes a heavy burden on a caregiver and may hurt his lower back.

Accordingly, various bed apparatuses capable of automatically moving a patient lying on a mattress have been developed, and the present applicant has proposed a medical bed apparatus disclosed in Japanese Patent Application No. 4-310458.

The bed apparatus disclosed in the prior application has a bed frame. The bed frame is provided so that the first mattress portion is driven up and down by first up and down driving means.

A mounting member is provided on the bed frame so as to be vertically movable by second vertical driving means, and a second mattress member is supported on the upper surface of the mounting member so as to be movable in the horizontal direction. It is configured to be driven in the left-right direction and the front-back direction by the left-right driving unit and the front-back driving unit.

Accordingly, the first mattress portion and the second mattress portion are alternately moved up and down, and the second mattress portion is driven in the left-right direction in conjunction with the up-and-down movement. The patient lying on the second mattress can be moved to one end in the width direction.

The first mattress section is driven up and down by four first up and down driving means provided at four corners of the bed frame, and the second mattress section is moved at four corners of the mounting body. Are driven up and down by four second up / down driving means provided in the first position.

Each of the vertical drive means has a drive source and a drive shaft which is vertically driven by the drive source, and the upper end of each drive shaft is connected to the lower surface of the first mattress portion and the four corners of the mounting body. Have been.

In such a configuration, when the first mattress portion or the second mattress portion is moved up and down,
If there is a shift in the movement of each of the four driving sources for driving each mattress unit, each mattress unit may not move up and down in a horizontal state.

Therefore, in order to prevent such a problem from occurring, it is necessary to synchronize and drive the four driving sources for driving the respective mattress portions, which makes the driving control complicated. Sometimes.

Further, if the configuration requires four driving mechanisms for vertically driving one mattress portion, the number of parts may increase, and in particular, a total of eight relatively expensive driving sources are required. Therefore, the cost of the bed apparatus may be increased.

[0013]

As described above, in a conventional bed apparatus capable of automatically moving a user lying on a mattress to one end in the width direction,
Since four vertical drive mechanisms were required to vertically drive the first and second mattress portions (floor plate), it was difficult to move each mattress portion up and down in a horizontal state. Not only that, there were also cases such as the necessity of a large number of drive mechanisms leading to an increase in cost.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a bed in which the first and second floor plates can be moved up and down horizontally by one vertical drive mechanism. It is to provide a device.

[0015]

According to the present invention, there is provided a bed frame, a first vertical driving mechanism and a second vertical driving mechanism provided on the bed frame, and A mounting body driven up and down by a vertical driving mechanism, a first floor plate movably provided on the mounting body in a left-right direction that is a width direction of the bed frame; A left-right drive mechanism provided on the mounting body for driving the first floor plate body in the left-right direction; and a vertical drive mechanism by the second up-down drive mechanism, and at the same height as the first floor plate body. A second floor plate having an opening for allowing the first floor plate to move in the left-right direction between the first floor plate and the first vertical plate driving mechanism; The drive mechanism includes a drive source, the first floor plate and the second floor plate. A connection member provided with an upper end pivotally attached to each of both ends in the longitudinal direction, and a rotational movement of the driving source connected to a lower end of the connection member, which is converted into a vertical movement of the connection member and transmitted to each floor plate. And a power transmission means.

[0016]

According to the above construction, the first and second vertical drive mechanisms respectively comprise a drive source, a connecting member having upper ends pivotally attached to both longitudinal ends of each floor plate, and a pivoting member connected to the lower end of the connecting member. And a power transmitting means for converting the rotational motion of the drive source into a vertical motion and transmitting the same to each connecting member. Therefore, since each floor plate is vertically driven by one vertical drive mechanism, it can be moved up and down while reliably maintaining a horizontal state.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 11 show an embodiment of the present invention. FIG. 1 is an exploded perspective view of the bed apparatus of the present invention.
In the drawing, reference numeral 1 denotes a bed frame provided with casters 2 with stoppers at four corners on the lower surface. This bed frame 1
Is formed of a rectangular frame-shaped frame portion 3 and side fences 4 (only one of them is shown) provided on both sides in the width direction of the frame portion 3.

The frame portion 3 has a pair of first and second side rods 5 spaced apart in parallel at a predetermined interval.
Are connected by the horizontal member 6 and the second horizontal member 7. The first horizontal member 6 is formed of an inverted trapezoidal band-like plate whose middle part is bent downward, and the second horizontal member 7 is formed of a flat band-like plate.

A pair of first horizontal members 6 are provided with a first vertical driving mechanism 11, and a pair of second horizontal members 7 are provided with a second vertical driving mechanism 12. The first vertical drive mechanism 11 has a first drive source 13 provided on the upper surface of one first horizontal member 6. The first drive source 13 is composed of a motor 13a and a speed reducer 13b. FIG.
As shown in (a), a drive sprocket 15 is fitted on the output shaft 14 of the speed reducer 13b.

Each first horizontal member 6 has a pair of first
Brackets 16 are erected at predetermined intervals. Both ends of a first transmission shaft 17 are rotatably supported by a pair of first brackets 16 located at one end in the width direction of the bed frame 1. A pair of first driven sprockets 18 is fitted to one end of the first transmission shaft 17 located on the first drive source 13 side, and a second driven sprocket 18 is attached to the other end as shown in FIG. A driven sprocket 19 is fitted.

Further, a pair of first brackets 16 located at the other end in the width direction of the bed frame 1 are provided with a pair of first brackets 16 as shown in FIG.
As shown in (a), the third and fourth sprockets 21 and 22 are rotatably supported. A first chain 23 is stretched between the driving sprocket 15 and one of the first driven sprockets 18, and a second chain is connected to the other first driven sprocket 18 and the third driven sprocket 21. 24 are stretched. Further, a third chain 25 is stretched over the second driven sprocket 19 and the fourth driven sprocket 22, as shown in FIG.

Therefore, the mode of the first speed reducer 13
When the gear 13a is operated, its rotation is transmitted from the output shaft 14 of the speed reducer 13b to the first to fourth driven sprockets 18 to 22.
It is transmitted to.

Two of the four driven sprockets 2
1 and 22 are fitted to one end of a support shaft 26 whose middle part is rotatably supported on the first bracket 16 as shown in FIG. The other end of the support shaft 26 protrudes from the first bracket 16, and a first rotary plate 27A is integrally attached to the protruding other end. At the eccentric position of the rotary plate 27A, a band-shaped first connecting member 28 is provided.
Is rotatably connected via a connecting pin 29.

The both ends of the first connecting shaft 17 are projected from the brackets 16, and the lower ends of the first connecting members 28 are pivotally attached to the projecting ends via the first rotating plate 27A. .

The four first driving mechanisms 11
The other end (upper end) of the connecting member 28 is pivoted by a connecting pin 32 to a connecting piece 31a vertically provided at four corners of the lower surface of the mounting body 31 as shown by a chain line in FIG. 4B and FIG. Is being worn.

Guide cylinders 33 are respectively suspended from the lower surfaces of both ends of the mounting body 31 in the longitudinal direction.
A guide shaft 34 into which the guide cylinder 33 is slidably fitted protrudes from an intermediate portion of the first horizontal member 6 of the drum 1.

Therefore, when the first to fourth driven sprockets 18 to 22 are rotated by the first drive source 13 and the first rotary plate 27A is linked with the rotation, one end of each of the rotary plates 27A is connected. Since the four first connecting members 28 move up and down by being pivoted, the mounting body 31 is linked to the up and down movement. At that time, the guide shaft 3
When the slide 3 slides the guide cylinder 34, the vertical movement of the mounting body 31 is guided, and the placement body 31 is prevented from falling in the left-right direction.

A fore-and-aft drive mechanism 35 is provided at an intermediate portion of the mounting body 31 in the longitudinal direction, and a left and right drive mechanism 36 is provided at each end. As shown in FIG. 5, each drive mechanism includes a motor 37a, a speed reducer 37b driven by the motor 37a, and an output shaft 37 of the speed reducer 37b.
and a drive rod 37e having one end pivotally mounted at an eccentric position of the rotary plate 37c.

A plurality of disk-shaped sliding members 39 made of a material having a low frictional resistance, such as nylon or fluorine resin, are provided on the upper surface of the mounting body 31. In this embodiment, two sliding members 39 are provided in two rows in the width direction of the mounting body 31 and three in the longitudinal direction, that is, six in total.

On the upper surface of the mounting member 31, a first floor plate member 41 is mounted so as to be slidable in the horizontal direction by the sliding member 39. The first floor plate 41 is provided with a first connecting piece 42a at an intermediate portion in the longitudinal direction, and second connecting pieces 42b at both ends. Also,
On the upper surface of the first floor plate 41, a plurality of first horizontal rails 43 having a band shape and a U-shaped cross section with an open lower surface side are provided at predetermined intervals in the longitudinal direction. As shown, cushion members 44 made of a synthetic resin such as urethane foam or styrene foam or other materials are provided.

The other end of the drive rod 37e of the front / rear drive mechanism 35 is pivotally connected to the first connection piece 42a, and the drive rod 37e of the left / right drive mechanism 36 is connected to the second connection piece 42b.
Are pivotally connected to each other. The drive rod 37e of the front-rear drive mechanism 35 is arranged along the longitudinal direction of the mounting body 31, and the drive rod 37e of the left-right drive mechanism 36 is arranged along the width direction.

Therefore, when the front-rear drive mechanism 35 is operated, the driving rod 37e is reciprocated along the front-rear direction of the mounting body 31 by the rotation of the rotary plate 37c. 41 interlocks, the left and right drive mechanism 3
When 6 is actuated, the driving rod 37e is reciprocally driven along the width direction of the mounting body 31, so that the first floor plate 41 is interlocked with the movement.

That is, the first floor plate 41 is driven on the mounting body 31 in the front, rear, left and right directions. In addition,
If the pair of left and right driving mechanisms 36 are driven by shifting the positions by 180 degrees, the first floor plate 41 will swing around the center in the longitudinal direction. Movements of the first floor plate 41 in the front-back, left-right, and swing directions are indicated by arrows A, B, and C in FIG.

A second vertical drive mechanism 12 provided on the bed frame 1 drives the second floor plate 51 up and down.
As shown in FIG. 1, the second floor plate 51 comprises upper and lower frames 52 and a back-raising frame 53 placed on the upper surface of the upper and lower frames 52.

The second vertical drive mechanism 12 is provided with the first
Like the vertical drive mechanism 11 of the second embodiment, the second drive source 61 is provided in the middle of one of the second horizontal members 7. This second
The driving source 61 is formed by integrating a motor 61a and a speed reducer 61b. As shown in FIG. 2B, a drive sprocket 63 is fitted on the output shaft 62 of the speed reducer 61b.

Each second horizontal member 7 of the bed frame 1
As shown in FIG. 1, a pair of second brackets 64 are provided upright at predetermined intervals. Bed frame 1
A pair of second brackets 64 located at one end in the width direction
, Both ends of the second transmission shaft 65 are rotatably supported. A fifth driven sprocket 66 is fitted to one end of the second transmission shaft 65 located on the second drive source 61 side, and a sixth driven sprocket 67 is fitted to the other end. I have.

Further, a pair of seventh sprockets 68 are rotatably mounted on one of a pair of second brackets 64 located at the other end in the width direction of the bed frame 1, and an eighth sprocket 69 is rotatable on the other. Supported. A fourth chain 71 is extended between the driving sprocket 63 and one seventh driven sprocket 68, and a fifth chain is connected to the other seventh driven sprocket 68 and the fifth driven sprocket 66. 72 are stretched. A sixth chain 73 is stretched between the sixth driven sprocket 67 and the eighth driven sprocket 69.

Therefore, the mode of the second drive source 61
When the gear 61a operates, the rotation thereof is transmitted from the output shaft 62 of the speed reducer 61b to the fifth to eighth driven sprockets 66 to 69.
It is transmitted to.

Two of the four driven sprockets 6
Reference numerals 8 and 69 are fitted to one end of a support shaft 26 whose middle part is rotatably supported by the first bracket 16, similarly to the first drive mechanism 11 shown in FIG. 3. The other end of the support shaft 26 protrudes from the second bracket 64, and a second rotating plate 27B is eccentrically attached to the protruding other end. One end (lower end) of the band-shaped second connecting member 75 is connected to the connecting pin 2 at the eccentric position of the second rotating plate 27B.
9 so as to be freely rotatable.

Note that both ends of the second transmission shaft 65 are
And a lower end of a second connecting member 75 is pivotally connected to a protruding end of the bracket 64 via a second rotating plate 27B.

The four second drive mechanisms 12
The other end (upper end) of the connecting member 75 is pivotally connected to a connecting piece 76 vertically provided at four corners of the lower surface of the upper and lower frames 52 shown in FIG. 1 by a connecting pin 32 shown in FIG.

Guide cylinders 77 are respectively provided on the lower surfaces of both ends in the longitudinal direction of the upper and lower frames 52, and the guide cylinders 77 are slidably fitted in the middle of the second horizontal member 7. A guide shaft 78 protrudes.

Accordingly, when the fifth to eighth driven sprockets 66 to 69 are rotated by the second vertical drive mechanism 12, and the second rotary plate 27B is interlocked with the rotation, one end is attached to each rotary plate 27B. Since the four first connecting members 75 pivotally connected to the vertical movement, the vertical frame 52 is linked to the vertical movement. At this time, when the guide cylinder 77 slides on the guide shaft 78, the up-and-down movement of the up-down frame 52 is guided, thereby preventing the frame from falling in the left-right direction.

As shown in FIG. 1, the back raising frame 53 has a fixed frame 81 fixed to the upper surface of the upper and lower frames 52 at an intermediate portion in the longitudinal direction. This fixed frame 8
A first movable frame 82 is pivotally connected to one end of the first frame, and a second movable frame 83 and a third movable frame 84 are sequentially pivotally mounted to the other end.

Each of the frames 81 to 84 is provided with a second horizontal bar 86 having a U-shaped cross section and an open lower surface, and is provided at predetermined intervals in the longitudinal direction. The second horizontal rail 86 is longer than the first horizontal rail 43 provided on the first floor plate 41 and is installed at a wide interval. Each of the above frames 81 to 84
A second cushion material 85 is provided on the second horizontal rail 86 as shown in FIG. The second cushion material 85 has a plurality of openings 85a large enough to allow the first horizontal rail 43 to enter. That is, the opening 85a is provided in the first horizontal rail 43 when the first horizontal rail 43 enters the gap between the second horizontal rails 86.
Is set to be large enough to move in the front-back, left-right, and swing directions.

The upper surface of the back raising frame 53 is covered with a cloth 87 as shown in FIG. The second
As shown in FIG. 9, sheet-like sensors S for detecting the load of the user are embedded on both sides of the cushion material 85 in the width direction. Therefore, if the user leans too far in the width direction of the second floor plate 51, the fact is detected by the sensor S.

As shown in FIGS. 8A and 8B, the side member 81a of the fixed frame 81 has a prism shape having an opening 91 formed on the upper surface over the entire length. A connecting rod 92 having a width slightly smaller than the width of the opening 91 is slidably inserted into the side member 81a. A guide roller 93 is rotatably provided at one end of the connecting rod 92 located inside the fixed frame 81, and a first movable frame 82 adjacent to the fixed frame 81 at the other end. And is connected and fixed by screws 94.

The connecting rod 92 has a U-shape with an open lower surface, and a link 95 is accommodated in the middle thereof. One end of the link 95 is connected to the connecting rod 92 by a pin 96.
The other end located on the first movable frame 82 side is pivotally attached to a bracket 97 fixed to a side member 81a of the fixed frame 81 by a pin 98.

The first movable frame 82 is shown in FIG.
When the link 95 rotates in the upward direction indicated by the arrow a, the link 95 rotates in the direction indicated by the arrow b. Therefore, the connecting rod 92 slides one end provided with the guide roller 93 in the direction indicated by the arrow c. Work together. As a result, the first movable frame 82 pivotally moves upward while sliding backward, that is, the lower end of the first movable frame 82 is away from the fixed frame 81.

When the first movable frame 82 stands up while sliding backward, the upper body of the user lying on the first floor plate 41 is raised by the first movable frame 82. Since the degree of bending becomes gentle, the degree of pressure on the abdomen of the user is reduced. Moreover, a mechanism for raising the first movable frame 82 while sliding it backward, that is, connecting the connecting rod 92 and the link 95 to the fixed frame 81
Since it is configured to be housed in the side member 81a, it is not only advantageous in terms of space as compared with the case where it is provided outside, it is hardly obstructive, and the appearance is also good.

The first movable frame 82 is driven up and down by a rising drive mechanism 101. That is, a bracket 100 is provided at one end of the upper and lower frames 52 as shown in FIGS.
The drive source 102 is pivotally connected to 0. This drive source 102
Is composed of a motor 102b and a housing cylinder 102d which slidably houses a drive shaft 102c which is driven forward and backward in the axial direction by the rotation of the motor.

One end of a first link 103 is pivotally connected to the tip of the drive shaft 102c. This first link 1
The other end of 03 is rotatably supported by a first support shaft 104 protruding from one inner surface of the upper and lower frames 52. One end of a second link 105 is rotatably supported on the first support shaft 104. One end of the second link 105 is fixed to the other end of the first link 103.

At the other end of the second link 105, a first pressing roller 106 is rotatably provided. In the first pressing roller 106, an engaging groove 106a is formed at an intermediate portion of the outer peripheral surface in the width direction, and the engaging groove is formed on the first movable frame as shown in FIG. And a lower end of a guide plate 107 provided on the inner surface of the side member 82a of the arm 82.

As shown in FIG. 6, a first support shaft 104 and one end of the first support shaft 104 are rotatably supported on the other inner surface of the upper and lower frames 52 as shown in FIG. A second link 105 is provided. At the other end of the second link 105, a pressing roller 106 is rotatably provided. The middle part of the pair of left and right second links 105 is connected by a first connection pipe 108. Therefore, the other second link 105 is interlocked with the rotation of one second link 105 via the first connection pipe 108.

In the middle of the first link 103, a third
One end of the link 109 is pivotally mounted. The other end of the third link 109 extends in the direction of the drive source 102, and the center portion is rotatably supported by the second support shaft 110 on the inner side surface of the upper and lower frames 52. It is pivotally attached to one of three tops of a substantially triangular pivot link 111.

A second push-up roller 112 having an engaging groove 112a formed on the outer peripheral surface is rotatably provided at one of the remaining two tops of the rotating link 111. The second push-up roller 112 has its engaging groove 11
2a is engaged with a guide plate 113 provided on the inner surface of one side of the second movable frame 83.

As shown in FIG. 6, a second push-up roller 112 is also provided on the other inner surface of the second movable frame 83.
Is rotatably supported. The pair of left and right push-up links 111 has the remaining tops in the second
Are connected by a connecting pipe 114. Therefore, the pair of left and right rotating links 111 are interlocked.

The first and second connecting pipes 108, 1
Numeral 14 is provided so as to enter into the U-shaped second horizontal rail 86. Thus, the first and second connection pipes 108 and 114 do not hinder the vertical movement of the first floor plate 41.

According to the wake-up drive mechanism 101 having the above configuration,
If the drive source 102 is actuated and the drive shaft 102c is driven in the direction of the arrow as shown by the dashed line in FIG. 7, the first and second links 103 and 105 also rotate in the direction of the arrow. The first link provided at the tip of the second link 105
The first movable frame 82 by the push-up roller 106 of FIG.
Is rotated in the ascending direction.

When the first link 103 rotates, the third link 109 slides in the direction of the arrow. As a result, since the rotating link 111 rotates in the direction of the arrow, the second movable frame 83 is pivotally attached to the fixed frame 81 by the second push-up roller 112 provided on the top. It turns around the one end side.

When the second movable frame 83 is rotated, the third movable frame 84 is interlocked with the rotation, so that these two movable frames are connected as shown by a chain line in FIG. It bends into a mountain shape.

That is, when the first movable frame 82 is rotated in the upright direction to raise the upper body of the user, the second movable frame 83 and the third movable frame 84 are formed into a mountain shape. Since the user's legs are bent and supported in a bent state, it is possible to prevent the buttocks of the user who has raised the upper body from shifting forward.

The first movable frame 82 is pushed up by a pair of left and right second links 105, and the second movable frame 83 is also pushed up by a pair of left and right rotating links 111. Can be prevented from tilting in the width direction when driven in the rising direction.

Next, the operation of the bed apparatus having the above configuration will be described with reference to FIGS. First,
When moving the user U in the width direction of the bed apparatus, first, as shown in FIG.
And the second floor plate 51
At the center of the first floor plate 41 in the width direction. This state is referred to as an initial state. In the first step from the initial state, as shown in FIG. 10B, the first up-down drive mechanism 11 is operated to lower the first floor plate 41, and the second floor plate is lifted without lifting the user U. It is supported by the body 51.

In the second step, as shown in FIG. 10C, the pair of left and right driving mechanisms 36 are operated to move the lowered first floor plate 41 to one end of the second floor plate 51 in the width direction. Let it. Next, in the third step, the first floor plate 41 is raised by the first vertical drive mechanism 11 to the same height as the second floor plate 51, as shown in FIG. In the fourth step, as shown in FIG. 10E, the second floor plate 51 is lowered by the second vertical drive mechanism 12, and the user U is supported by the first floor plate 41 without being lifted.

In the fifth step, as shown in FIG. 10 (f), the first floor plate 41 is operated in the opposite direction by the left / right drive mechanism 36 to move to the other end in the width direction. As a result, the user U has the first horizontal bar 43 of the first floor plate 41 and the second horizontal bar 43 of the second floor plate 51, which are indicated by X in FIG.
Is moved toward the other end in the width direction by half the width of the gap with the opening 85a formed in the cushion body 85 in the width direction.

That is, by repeating the movement of the first floor plate 41 and the second floor plate 51, the user U is moved from one end in the width direction to the other end by the above-mentioned dimension X in each cycle. Can be moved to

As described above, if the user U can be moved without being lifted, the pain given to the user U can be reduced. In other words, when the user U is lifted by raising the first or second floor plate members 41 and 51, each of the floor plate members strongly presses the body of the user U, so that the user U suffers. .

However, if the user U is moved while maintaining the state in which the user U is supported by the other floor plate by lowering one floor plate, the user U
The user U
Pain can be reduced.

When moving the user U from the other end to the one end in the width direction of the bed apparatus, the movement of the first floor plate 41 in the width direction is reversed, that is, the first floor plate 41 is moved in the opposite direction, that is, as shown in FIG. 2
After moving to the other end in the width direction in the step, it may be moved to one end in the fifth step.

Next, the case where the user U is moved along the longitudinal direction of the bed apparatus will be described with reference to FIGS.
This will be described with reference to FIG. First, as shown in FIG. 11A, the first floor plate 41 is connected to the opening 85 of the second floor plate 51.
a at the center in the width direction. This state is referred to as an initial state. Next, as a first step, the first floor plate 41 is lowered as shown in FIG. 11B, and the user U is supported by the second floor plate 51 without being lifted. In the second step, the first floor plate 41 is moved backward by the front-rear drive mechanism 35 as shown in FIG.

In the third step, as shown in FIG. 11D, the retracted first floor plate 41 is raised to the same height as the second floor plate 51, and then in the fourth step, as shown in FIG.
As shown in (e), the second floor plate 51 is lowered, and the user U is supported by the first floor plate 41 without being raised. In the fifth step, the first floor plate 41 supporting the user U is driven in the forward direction by the front-rear drive mechanism 35 as shown in FIG. As a result, the user U can be moved in the forward direction by half the length of the longitudinal gap between the opening 85a and the first floor plate 41 indicated by Y in FIG.

That is, by repeating the movement of the first floor plate 41 and the second floor plate 51, the user U is moved forward from the rear in the longitudinal direction of the bed apparatus by the gap Y every cycle. (Or from front to back).

On the other hand, the first floor plate 41 is connected to the second floor plate 5
After being positioned at the center of the first opening 85a, the first floor plate 41 is lowered, and the user U is supported by the second floor plate 51, and one and the other of the pair of left and right drive mechanisms 36 are connected. By operating in the reverse direction, the second mattress portion 28 can be driven not only in the front-back and left-right directions but also in the rotation direction as shown by the arrow C in FIG.

The first floor plate 41 and the second floor plate 5
1 is alternately lowered every predetermined time, and the user U
The support portion for the user U can be changed by alternately supporting with the floor plate member 41 or the second floor plate member 51. Thereby, it is possible to prevent the pressure ulcer from occurring on the body of the user U.

As a method for preventing the pressure ulcer of the user U,
The first floor panel 41 and the second floor panel 51 may not only be alternately lowered at predetermined time intervals, but may also move the user U in the front-rear direction or the left-right direction. Thus, the portion supporting the user U is changed by the first floor plate 41 and the second floor plate 51, so that the pressure ulcer prevention effect can be increased.

When the user U is moved in the front-rear direction or the left-right direction, a part of the body of the user U is
When reaching the periphery of the first floor plate 51, the pressure sensor S provided on the periphery of the second floor plate body 51 detects that. Therefore, if the operation of the front-rear drive mechanism 35 or the left-right drive mechanism 36 is stopped or an alarm is issued based on the detection signal, it is possible to prevent the user U from moving too far in the left-right direction or the front-rear direction. That is, it is possible to prevent the user U from dropping from the second floor plate 51.

If the left / right drive mechanism 36 or the front / rear drive mechanism 35 is driven in the reverse direction by the detection signal of the pressure sensor S, the user U who has moved to one end in the left / right direction or the front / rear direction can be moved to the other end. Can be returned to the side.

On the other hand, according to the bed apparatus having the above configuration, the first floor plate 41 is movably supported on the mounting body 31 by the sliding member 39. Therefore, the first
When the floor plate 41 is moved in the front-rear direction or the width direction by the front-rear drive mechanism 35 or the left-right drive mechanism 36,
The movement can be performed smoothly with a light driving force. Thus, since a small output can be used for the front-rear drive mechanism 35 and the left-right drive mechanism 36, the size and cost can be reduced. Therefore, the number of parts can be reduced.

FIG. 12 shows another embodiment of the present invention. In this embodiment, the first cushion member 44 provided on the upper surface of the first horizontal rail 34 of the first floor panel 41 and the second cushion provided on the second horizontal rail 86 of the second floor panel 51 are described. It is a modification of the cushion material 85.

That is, a first wedge-shaped member 121 having a triangular cross section is provided at both ends in the width direction of the first cushion member 44, and a second wedge-shaped member 121 is formed at both ends in the width direction of the second cushion member 85. A wedge-shaped member 122 is provided.
Each of the wedge-shaped members 121 and 122 is formed of an elastic material such as urethane foam, and is inclined downward inward in the width direction of each of the floor plates 41 and 51. The wedge-shaped members 121 and 122 are attached to the cushion members 44 and 85 by fixing means such as a velvet fastener or an adhesive. That is, each of the floor plates 41 and 51 has a shape in which both ends are inclined high in the width direction.

The first wedge-shaped member 121 and the second wedge-shaped member 122 are provided so as to be aligned with each other in the width direction of each floor plate, and the first wedge-shaped member 121 is connected to the second wedge-shaped member 121. It has the same inclined state as the tip of the wedge-shaped member 122.

According to such a configuration, when the user U is moved laterally from the center portion in the width direction, the user U rides on the upper surfaces of the wedge-shaped members 121 and 122, and becomes obliquely horizontal from upward. . Therefore, since the caregiver easily turns the user U down, the caregiver can easily perform care such as changing clothes, washing and disinfecting the body.

If the user U is alternately moved to the left and right in the width direction, the body is turned sideways when moved to the end in the width direction, which is effective in preventing bedsores and relieving pressure on internal organs. It has advantages such as being able to.

[0085]

As described above, the present invention comprises a first vertical drive mechanism for driving the first floor plate vertically and a second vertical drive mechanism for vertically driving the second floor plate. A drive source, a connection member provided with one end pivotally attached to both ends in the longitudinal direction of the first floor plate and the second floor plate, and a drive source connected to a lower end of the connection member. A power transmission means for converting the rotational motion into a vertical motion of the connecting member and transmitting the same to each floor plate body, and these drive mechanisms are provided on the bed frame.

Accordingly, the first and second vertical drive mechanisms can respectively drive the first and second floor plates up and down by one drive source. Therefore, the four drive sources are used to move the floor plate up and down. In addition to the advantage that the floor plate can be reliably moved up and down in a horizontal state as compared with the conventional method, the number of drive sources can be reduced, so that drive control can be simplified and costs can be reduced.

[Brief description of the drawings]

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

FIG. 2A is a front view of a part of a first vertical drive mechanism, and FIG. 2B is a front view of a part of a second vertical drive mechanism.

FIG. 3 is a sectional view of a mechanism for vertically moving a connecting member.

4 (a) to 4 (c) are cross-sectional views of different portions in the longitudinal direction of the bed device along the width direction.

FIG. 5 is a plan view of the mounting frame.

FIG. 6 is a plan view of the upper and lower frames of the second floor plate.

FIG. 7 is a side view of a part of the second floor plate.

FIG. 8 (a) is a perspective view showing a state in which the first movable frame of the back raising frame is also laid down, and FIG. 8 (b) is a state where the first movable frame is driven in the upright direction. FIG.

FIG. 9 is a plan view of the same assembled state.

FIG. 10 is an explanatory diagram when the user is similarly moved in the left-right direction.

FIG. 11 is an explanatory diagram when the user is moved in the front-rear direction.

FIG. 12 is a perspective view of a floor panel showing another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bed frame, 11 ... 1st up-down drive mechanism, 12
... Second vertical drive mechanism, 31 mounting body, 36 left / right drive mechanism, 41 first floor plate, 51 second floor plate, 1
3, 61: first and second drive sources, 28, 75: first and second connecting members, 27A, 27B: first and second rotating plates (power transmission means), 85a: opening.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yoshiharu Hamaguchi 1148 Nakagamicho, Akishima-shi, Tokyo France Bed Co., Ltd. Tokyo factory (56) References JP-A-6-304209 (JP, A) JP-A-3-3 92158 (JP, A) JP-A 2-135020 (JP, U) JP-A 4-16663 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61G 7/00

Claims (1)

(57) [Claims] A bed frame; a first up-down drive mechanism and a second up-down drive mechanism provided in the bed frame; a mounting body driven up and down by the first up-down drive mechanism; A first floor plate provided movably on the mounting body in the left-right direction which is the width direction of the bed frame; and a first floor plate provided on the mounting body in the left-right direction. A first left and right driving mechanism; and a first floor plate that is vertically driven by the second vertical driving mechanism and is located between the first floor plate when the height is substantially the same as the first floor plate. A second floor plate having an opening that allows horizontal movement of the first floor plate, wherein the first vertical drive mechanism and the second vertical drive mechanism comprise: a drive source; and the first floor plate. Upper ends are pivotally attached to both ends in the longitudinal direction of the first floor plate and the second floor plate. A bed member comprising: a connecting member connected to a lower end of the connecting member; and a power transmission unit that converts a rotational motion of the driving source into a vertical motion of the connecting member and transmits the vertical motion to each floor plate. .