JPH03277316A - bed equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Objective of the Invention (Industrial Application Field) This invention relates to a bed device that can be converted from a bed to a chair.

(Prior art) For users such as elderly or sick people who are unable to get up on their own bed, the floor section provided on the bed body is divided into multiple sections, one of which corresponds to the upper body of the user. A so-called undulating bed device is known, which allows the bed to be raised and lowered.

According to such a bed/device, a user can easily raise his/her upper body on the bed. However, if the user is an elderly person with weak legs or a sick person, the user may not be able to immediately get off the bed or stand up from that state simply by raising the upper body of the user on the bed.

(Problem to be Solved by the Invention) In this way, even in the case of a user with weak legs who is unable to get off and stand up from the bed using the self-cutting knife, it is possible to assist the user from lying on the bed to a position close to standing up. In many cases, it is possible to stand up. Therefore, for such users, we not only raise the bar but also
It is desired to develop a bed device that can change the body position to a state close to a standing position.

This invention was made based on the above circumstances, and its purpose is not only to raise the upper body of the user, but also to convert the bed into a chair, and then use the bed while sitting on the chair. To provide a bed device in which the chair can be tilted forward so that a person can easily stand up.

[Structure of the Invention (Means and Effects for Solving the Problems) In order to solve the above problems, the present invention provides a bed body which is swingably connected to a midway portion in the longitudinal direction of the bed body by a parallel link mechanism. A movable frame having a floor contacting part on its upper surface, a front floor part arranged side by side on one end side of the floor contacting part and having one end pivotally attached to the movable frame, and a front floor part arranged side by side on the other end side of the floor contacting part. a leg bed portion having one end pivotally connected to the floor contacting portion; a guide member provided along the longitudinal direction of the bed body on the lower surface side of the floor contacting portion; and a guide member slidably provided on the guide member. a slider, a lifting link mechanism that operates in conjunction with the slide of the slider and raises and lowers the front floor with one end as a fulcrum; one end is pivotally connected to the slider and the other end is pivotally connected to the leg floor. a connecting member that is provided and rotates the upper leg floor portion at least downwardly from a horizontal state in response to the slide of the slider; and a connecting member that holds the slider so that it cannot slide along the guide member when the front floor portion is erected. one end is pivotally connected to the slider and a drive source is provided at the other end, and the drive source drives the slider forward and backward in the axial direction to slide the slider, and the slider cannot be slid by the stopper mechanism. and a drive shaft that swings the movable frame through the parallel link mechanism in a direction in which the floor-contacting portion of the upper surface of the movable frame is tilted forward and downward.

According to this configuration, the bed is converted into a chair by raising the front floor and rotating the leg floor downwards, so a user lying supine on the bed can raise his or her upper body and touch the bed. Can assume a sitting position. Next, by tilting the floor-contacting portion forward and downward, the body of the user sitting on the floor-contacting portion is urged forward, making it easier to stand up.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

The bed apparatus shown in FIGS. 1 to 2 has a bed main body 1. This bed body 1 is composed of a fixed frame 2 and a separation frame 3. The fixed frame 2 includes a first side member 4 having a U-shaped cross section, and a second side member 5 shorter than the first side member 4. One end of the second side member 5 is connected and fixed to both ends of a first horizontal member 6. There is. A pair of first casters 7 are attached to the lower surface of both ends of the first side member 4 .

The separation frame 3 includes a third side member 8 that is slidably inserted into the first side member 4, and a third side member 8 that is slidably inserted into the first side member 4.
A pair of second horizontal members 9 having one end connected and fixed to the second horizontal members 9, and a fourth side member 1 connected and fixed to the other end of these second horizontal members 9.
1, and second casters 12 are attached to the lower surface side of one end of one second horizontal member 9 and the lower surface side of both ends of the fourth side member 11, respectively.

At one end of the third side member 8 of the separation frame 3, a tenth
As shown in the figure, one end of the rack 13 is connected. A pinion 14 is engaged with this rack 13. This pinion 14 is the output shaft 1 of a first drive 119f15 with a speed reduction mechanism provided on the inner surface of the middle part of the first horizontal member 6.
6 is fitted.

Therefore, since the first drive source 15 is activated and driven along the binocular direction, the separation frame 3 connected to the rack 13 is driven in the direction toward and away from the fixed frame 2. FIG. 5 shows a state in which the separation frame 3 is separated from the fixed frame 2. If the separation frame 3 is driven in the joining direction from this state, the ends of the second side member 5 and the fourth side member 11 will be attached to each other. L-shaped engagement members 5a, lla provided
are engaged, and the bed main body 1 becomes a rectangular frame shape. As shown in FIGS. 3 and 4, a helad board 17 is erected on the end surface of the fixed frame 2, and a footboard 18 is erected on the end surface of the separation frame 3.

As shown in FIG.
1 is arranged. This base frame 21 has a rectangular frame shape, and its upper ends on both sides are fixed to the fixed frame 2. A second drive source 22 is provided at one end of the fixed frame 2 located on the side of the helad board 1;
A drive unit 24 is pivotally attached to the drive unit 24. A drive unit 24 is integrally formed with a hollow drive shaft 23 that is driven forward and backward by the drive shaft 23, and a cylinder 23a into which the drive shaft 23 is slidably inserted. Although details of the drive unit 24 are not shown, a rotation shaft (not shown) that is rotationally driven by the second drive source 22 is connected to the cylinder body 23.
It is provided within the proximal end of a. A nut portion (not shown) is formed at one end of the rotating shaft, and a male screw portion (not shown) formed at the base end of the drive shaft 23 is screwed into this nut portion. The drive shaft 23 is held by the cylindrical body 23a in a state where it is prevented from rotating. If the rotary shaft is rotationally driven by the second drive source 22, the drive shaft 23 can be driven forward and backward in the axial direction.

A movable frame 2 is provided at the location corresponding to the fixed frame 2 above.
5 are arranged. The movable frame 25 has a rectangular planar shape, and a pair of connecting portions 26 are provided vertically from both sides of the lower surface of one end opposite to the head board 17, as shown in FIG. Each connecting portion 26 and a pair of supporting portions 27 protruding from one end of the base frame 21 are as follows:
First parallel links 2 each forming a parallel link mechanism
8 and a second parallel link 29 are pivotally connected at both ends.

One end 28a129a of each parallel link 28.29 is pivoted at the same position in the front-rear direction of the support part 27, and the other end 28
b and 29b are pivotally mounted with a shift in the front-rear direction. That is, the other end 28a of the first parallel link 28 is pivoted to be shifted toward the drive unit 24 side than the other end 29b of the second parallel link 29. Thereby, the movable frame 2
5 can be swung from a lowered position shown by a solid line in FIG. 2 to a raised position shown by a chain line as will be described later.

One end of the front floor portion 31 is rotatably connected to the movable frame 25 at the other end located on the headboard 17 side,
If the floor contact portion 32 is placed on the upper surface, it is fixed. This floor contact part 3
Elongated holes 33 are formed on both sides of one end on the footboard 18 side of 2, respectively. A support shaft 34 is provided in the pair of elongated holes 33 with both ends slidably and rotatably inserted therein.

At both ends of the support shaft 34 protruding from the long hole 33, first
Both sides of one end of the O-leg floor portion 35 are connected. In other words,
The first movable bed section 35 is connected to the floor contacting section 32 so as to be rotatable and slidable along the elongated hole 33 . Rollers 36 are rotatably provided on the lower surface of both sides of one end of the first O-leg floor section 35 . When the first movable bed section 35 is rotated approximately 90 degrees downward from a substantially horizontal state, the roller 36 rolls into contact with the lower surface of the floor contact section 32 . Thereby, the first movable bed section 35 can slide along the elongated hole 33 in a state substantially perpendicular to the floor contact section 32, as shown by the chain line in FIG. Furthermore, a second moving bed portion 37 is provided on the separation frame 3, as shown in FIGS. 3 and 4.

A pair of guide members 38 having a U-shaped cross section are provided along the longitudinal direction of the bed body 1 on the lower surface side of the floor contacting portion 32 . A first slider 39 shown in FIGS. 6 and 7 is slidably inserted into this guide member 38. As shown in FIGS. The first slider 39 includes a pair of rectangular parallelepiped-shaped first blocks 41 that are slidably inserted into each guide member 38, and a plate-shaped second block 41 that connects one longitudinal end of the first blocks 41. It consists of a block 42. One of the first blocks 41 has an elongated hole 43 formed along the longitudinal direction at the other end thereof, and a first engagement hole 44 open to the lower surface. Furthermore, a second engagement hole 45 is bored through the center portion of the second block 42 in the thickness direction.

Further, a second slider 46 is slidably provided on the outside of the pair of guide members 38.

This second slider 46 is connected to the intermediate portion 4 as shown in FIG.
7, and a pair of side wall portions 48 erected at both ends of the intermediate portion 47. Notches 49 are formed at the front and rear ends of the intermediate portion 470, and a third engagement hole 51 is formed in the central portion, and rollers 52 are rotatably provided on the inner surfaces of the upper portions of the side wall portions 48. It is being

This second slider 46 is connected to the pair of guide members 3
The rollers 52 are brought into contact with the upper surface of the guide members 3.
It is slidably provided so as to surround the outer surface of 8 except for the upper surface.

One end of a first undulation link 54 forming a undulation link mechanism 53 is rotatably connected to the tip of the drive shaft 23, which is driven forward and backward in the axial direction by the second drive source 22, by a support shaft 54a. There is. This support shaft 54a is installed between the first slider 39 and the pair of first blocks 41.

A second undulation link 5 is provided at the other end of the first undulation link 54.
5 is pivoted at one end. This second undulating link 55
A pin 56 is protruded from one end of the pin 56, and the pin 56 is slidably engaged with a long hole 43 formed in one first block 41 of the first slider 39.

One end of a third undulation link 57 is pivotally connected to the other end of the second undulation link 55 . This third undulating link 5
The other end of the movable frame 25 is pivotally connected to the top of one end of the helad board 1f side. Further, an arcuate cam 58 is formed on the other end side of the third undulating link 57. This cam 58 is in contact with a port 61 provided at the other end of an arm 59, one end of which is fixed to a midway portion of the lower surface of the front floor portion 31. When the front floor portion 31 is laid down substantially horizontally, the roller 61 is in contact with the bottom dead center of the cam 58, as shown in FIG. From that state, drive shaft 2
3 in the backward direction, '! The slider 39 of s1 slides along the guide member 38 and rotates the first to third undulating links 54, 55, 57 as shown in FIG. As a result, the roller 61 moves from the bottom dead center of the cam 58 to the top dead center, so that the front floor portion 31 moves toward the arm 5.
9 in the standing direction.

As shown in FIGS. 1 and 2, a first solenoid 6, which is a first stopper mechanism, is provided on the bottom surface of the second slider 46.
2 is provided by a bracket 63. This first
The solenoid 62 has a rod 65 biased upwardly by a spring 64. This rod 65 is fitted into a second engagement hole 45 and a third engagement hole 51 formed in the first slider 39 and the second slider 46 to integrally connect these sliders. Therefore, when the rod 65 of the first solenoid 62 is in a protruding state, the second slider 46 is interlocked with the slides of the three first sliders, and the first solenoid 65 is energized and the rod 65 is moved by the spring 6.
4, the first slider 39
The coupling state between the second slider 46 and the second slider 46 can be released.

A connecting rod 66 is provided at one end of the second slider 46 in the front and back direction.
One end is pivoted. The other end of the connecting rod 66 is pivotally connected to a bracket 67 provided halfway down the lower surface of the first leg floor section 35.

Therefore, the second slider 46 is the first slider 39
When the first leg floor section 35 is slid from the position shown in FIG. 1 to the position shown in FIG. After that, it slides toward the lower surface of the floor contact portion 32 along a long hole 33 bored at one end of the floor contact portion 32.

A pair of guide members 3 provided on the lower surface of the floor contact portion 32
As shown in FIG. 1, a second solenoid 68 as a second stopper mechanism is mounted on the lower surface of one end of the bracket 6
It is attached by 9. This second solenoid 6
Numeral 8 has a rod 72 that is biased in the upward direction by a spring 71, similar to the first solenoid 62 described above. The tip of this rod 72 is connected to the guide member 38 as shown in FIG.
It protrudes from a through hole 73 bored in the. When the first slider 39 slides to the position shown in FIG. 2, this rod 72 is pressed by the tip end surface of one of the first blocks 41 and is elastically displaced downward.
It engages with a first engagement hole 44 that is open and bored in its lower surface. Thereby, the first slider 39 is held by the guide member 38 in a non-slidable manner.

FIG. 11 is a schematic diagram of the control system of the bed device having the above configuration. In the figure, 81 is a control section. A hand-held operation section 82 is connected to this control section 81 . This hand operation section 82 is provided with a back-up switch 83, a back-down switch 84, a chair on switch 85, a chair off switch 86, a stand up switch 87, and a stand up off switch 88.

Above each of these switches is a light emitting diode 8.
3a to 88a are provided. Of these light emitting diodes, only the parts of the switches that can be operated at that time are lit during various operations. For example, back lift switch 83
If the light emitting diode 83a is lit, turning on the back raising switch 83 starts the back raising operation as described later.

Further, the first drive source 15, the second drive source 22, the first solenoid 62, and the second solenoid 68 are connected to the control unit 81 as controlled devices whose drive is controlled by the control unit 81. has been done. The second driving source 22
A pulse generator 91 is connected to the pulse generator 91, and detects the amount of drive of the drive shaft 23 by the second drive source 22, which is the rotational speed of the motor, and feeds it back to the control section 81.

Furthermore, signals for controlling the above-mentioned controlled devices are inputted to the control section 81 from various limit switches. As a limit switch, the separation frame 3 of the base body 1
A first limit switch 92 detects that the separation frame 3 is not separated from the fixed frame 2, and a second limit switch 93 detects that the separation frame 3 is separated from the fixed frame 2 to a predetermined position. For example, it is provided at a location corresponding to rank 13 of rank 1. Also, a third limit switch 94 detects when the first pond bed section 35 is driven in the rising direction by a predetermined angle by the second drive source 22; A fourth limit switch 95 is provided which detects when 31 is raised to a predetermined position.

The third and fourth limit switches 94 and 95 are provided to detect the amount of drive of the drive shaft 23 driven by the second drive source 22.

FIG. 12 schematically shows the arrangement of the controlled equipment and each limit switch.

In addition, as shown by the chain line in FIG. 4, a first sotress 96 is held on the upper surface of the loading bed section 31 and the floor contacting section 32, and the first pond bed section 35 and the second pond bed section The upper surface of the portion 37 holds second and third ma and sotresses 97 and 98, respectively.

Next, the operation of the bed device with the above configuration is shown in FIG. 13(a).
This will be explained with reference to (g). First, Figure 13 (a
) to the state shown in FIG. 13(b)
To raise the back lift switch 83 of the hand control unit 82, turn on. As a result, the first solenoid 62 is energized and its rod 65 is lowered.
The coupling state between the three sliders and the second slider 46 is released. Then, the second drive source 22 operates to drive the drive shaft 2.
3 in the backward direction. The operating direction of this second drive source 22 is the opposite direction. Thereby, the first slider 3
9 is slid toward one end of the guide body 38, and the first to third undulation links 54, 55, and 57 rotate, so that the roller 61 that is in rolling contact with the cam 59 of the third undulation link 57 rotates. The back pressure section 31 is rotated in the upright direction via.

When the first slider 39 slides to a predetermined position and the back pressure part 31 is raised to a predetermined angle, this is detected by the fourth slider switch 95, and the detection signal is used to control the second drive source. 22 is stopped. In this state, the rod 72 of the second solenoid 68 is connected to the first slider 3.
The first engagement hole 44 formed in the first block 41 of No. 9
Since the slider 39 is engaged with the slider 39, the slider 39 is held non-slidably. In other words, the back pressure section 31 is held in an upright state and unrotatable.

Further, the amount of drive of the drive shaft 23 by the second drive source 22 is detected by the pulse generator 91, and the detection signal is stored in the control section 81.

The back pressure part 31 erected in this way is shown in FIG.
In the case of laying down as shown in c), the hand operation unit 82
Turn on the back lowering switch 83. Back-down switch 8
3, the second solenoid 68 is energized, the lot 72 is lowered, and the first slider 39 is released from its holding state. Next, the second drive source 22 operates in the forward direction, which is the direction in which the drive shaft 23 is advanced, and the first slider 39 is slid toward the other end of the guide body 38 .

As a result, the first to third hoisting links 53, 54, and 57 of the hoisting link mechanism 53 are rotated in the opposite direction to the direction when standing up, so that the cam 58 of the third hoisting link 57 is rotated to the top dead center. The roller 61 in contact moves to the bottom dead center. roller 6
1 moves from the top dead center of the cam 58 to the bottom dead center, the back pressure part 31 rotates in the direction of collapse together with the five arms provided with the roller 61. Then, the control section 81 compares the number of pulses generated by the pulse generator 91 with the number of pulses at the time of rising, and when the number of pulses becomes the same, the driving of the second drive source 22 is stopped. In other words, the back pressure section 31 can be brought down to the same state as the initial state.

In addition, when stopping the back pressure section 3 midway, the back lowering switch 83 or the back raising switch 84 is pressed. If you want to stand up after stopping halfway, press the back lift switch 83.
The user only has to turn on the back-lowering switch 4 when the user wants to lie down.

Next, the operation when converting the bed device into a chair will be explained with reference to FIGS. 13(e) to (,?). first,
When the chair-on switch 85 of the hand-operated switch 82 is turned on, the second drive source 22 operates further in the forward direction from the state in which the back pressure section 31 is laid down horizontally, and drives the drive shaft 23 in the forward direction.

Thereby, the first to third undulating links 54, 55.
57 rotates to slide the first slider 39 toward the other end of the guide body 38, the second slider 46, which is integrally connected to the three first sliders by the first solenoid 62, also slides. Slide. Second slider 46
When the slider slides, the first leg floor portion 35 is rotated upward by a connecting rod 66 whose one end is pivotally connected to the second slider 46. In this way, when the drive shaft 23 is driven in the forward direction by a predetermined amount, the third limit switch 94
is turned on, the signal causes the second drive source 2 to turn on.
2 stops.

When the second drive source 22 stops, the first drive source 15 is activated and drives the separation frame 3, that is, the second leg floor portion 37, in a direction away from the fixed frame 2. When the second leg floor section 37 is driven and the first limit switch 92 is turned on, the first drive source 15 is stopped by the signal.

When the first drive source 15 stops, the second drive source 22 operates in the opposite direction. In other words, the drive shaft 23 is driven in the backward direction. As a result, the first slider 39 slides along the guide body 38 together with the second slider 46, so that the back pressure portion 31 is erected. Furthermore, as the second slider 46 slides, the first leg floor part 35 is rotated downward about the support shaft 34 as shown by the chain line in FIG. 1, and the support shaft 34 is brought into contact with the floor. It slides along the elongated hole 33 of the section 32. This state is shown in Figures 13(e) and (f).
).

The sliding amount S of the first moving bed section 35 is set to be approximately the same as the thickness dimension of the second mattress 97 held on the upper surface thereof. As a result, even if the first movable bed section 35 is folded downward, the second pine rest 97 on the upper surface thereof will not protrude beyond the end of the floor contact section 32.

In this way, when the front floor part 31 rises to a predetermined angle,
Since this is detected by the fourth limit switch 95, the second drive source 22 is stopped by the detection signal. Further, when the first slider 39 is driven to a predetermined position, the rod 72 of the second solenoid 68 is engaged with the first engagement hole 44 formed in the first block 41, similar to when raising the back. Since they fit together, the front floor portion 31 is held unrotatable.

Therefore, the bed device is converted into a chair in which the user can sit on the floor contact portion 32 and lean against the front floor portion 31. When converting from a bed to a chair, the first O-leg floor part 35 is folded, so that the user can bend his or her legs from the knee part together with the first O-leg floor part 35.

At this time, the second moving bed section 3 installed in parallel with the first moving bed section 35
7 is driven in the direction of separation in advance, so even if the tip of the leg is on the second moving bed section 37 when the user is lying on his back, when folding the second moving bed section 37, The user's legs will not get caught on the second moving bed section 37.

That is, the user's upper body is lifted by the front floor section 31, and the legs can be bent from the knees by the first movable floor section 35, so that the user can assume a sitting posture on a chair.

In this way, when the user who is seated on the chair wants to stand up after being converted into a chair, the stand-up on switch 87 is turned on. Then, with the first slider 39 fixed to the guide member 38, the second drive source 22 operates in the forward direction, and the drive shaft 23 is driven in the forward direction. Therefore, the first slider 39 does not slide and the undulation link mechanism 53 is not operated.
The thrust of the drive shaft 23 in the direction shown by arrow F in FIG.

The thrust force F along the axial direction of the drive shaft 23 can be divided into an upward force and a horizontal force. Therefore, while the movable frame 25 swings the first parallel link 28 and the second two parallel links of the parallel link mechanism by the thrust F, the upright state shown by the chain line in FIG. 2 drives the drive shaft 23. The pulse generator 91 controls the number of pulses of the second drive source 22 to
When the count reaches a predetermined set value, the second drive source 22 stops.

When the movable frame 25 is driven to the upright state, the user seated on the floor contact portion 32 on the movable frame 25 is urged in the direction of standing up. Therefore, even if the user is an elderly person or a sick person who has weak legs and has difficulty standing up from a supine position, the user will be forced to stand up after being changed to a seated position. can be easily stood up.

To return the chair that is in the upright position to a chair that is in a substantially horizontal position on the ground contact portion 32, turn on the upright off switch 88. As a result, the second drive source 22 operates in the opposite direction, and the drive shaft 23 is driven in the backward direction. Therefore, the movable frame 25 does not swing the first and second parallel links 28 and 29 in the opposite direction to when it is erected, and returns to the state in which the floor contact portion 32 becomes horizontal. At this time, the drive shaft 23 is driven by the same number of pulses as the number of pulses at the time of standing up.

In order to return the chair converted in this way to a bed, the chair off switch 86 of the hand control unit 82 is turned on. As a result, the second solenoid 68 is energized and its rod 72 is inserted into the first engagement hole 44 of the first slider 39.
After it comes off, the second drive source 22 operates in the forward direction,
The drive shaft 23 is driven in the forward direction. When the drive shaft 23 is driven, the first and second sliders 39 and 46 slide along the guide body 38 in the driving direction of the drive shaft 23, so that the back floor portion 31 is lowered in the same way as when lowering the back. do. Also, after the first movable bed section 35 is moved in parallel from the lower surface side of the floor contacting section 32 to the end by the connecting rod 66 connected to the second slider 46, it is rotated until it becomes almost horizontal. I am made to do so.

When the load bed section 31 and the first moving bed section 35 are driven to a predetermined position and this is detected by the third limit switch 94, the second drive source 22 is stopped by the detection signal. . Next, the first drive source 15 is activated, and the separation frame 3 is driven in the direction toward the fixed frame 2 until the second limit switch 93 is activated. As a result, the second moving bed section 37 is arranged in parallel with the first moving bed section 35 and converted into a bed.

In addition, in the above embodiment, when converting from a bed to a chair, the first moving bed section was raised slightly and then lowered in order to separate the second moving bed section. If the part is in non-contact or slidable contact with the first moving bed part, the second moving bed part can be separated without rotating the first moving bed part upward. .

Further, depending on the length of the first movable bed section, the height of the user, etc., the second movable bed section may not be provided.

[Effects of the Invention] As described above, according to the present invention, a bed can be converted into a chair, and the chair can also be tilted forward. Therefore, it is possible to push a user who is lying on the bed to a sitting position on a chair and then to stand up, which is useful for users who have weak legs and have difficulty standing up from a lying position on the bed. Even if you are
It becomes possible to stand up relatively well. In addition, a movable bed section is provided at the front end of the floor-contacting section that becomes the seat on which the user sits when converted into a chair, and this movable bed section is rotated downward before being converted into a chair. , the user bends their legs at the knees, raises their upper body, and is then urged to stand up. Therefore, the robot is biased in the direction of standing up after the standing posture is sufficiently adjusted, which also makes it easier to stand up.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the movable frame before it is driven, FIG. 2 is a side view of the movable frame when it is driven, and FIG. 3 is a plan view of the entire structure. 4 is a side view, FIG. 5 is a perspective view of the bed body, FIG. 6 is a perspective view of the guide member provided with the first and second sliders, and FIG. 7 is a perspective view of the first slider. 8 is a perspective view of the second slider, and FIG. 9 is a perspective view of the first slider
10 is a sectional view of the bed body in the part where the second drive source is attached, FIG. 11 is a schematic diagram of the control system, and FIG.
The figure is an explanatory diagram of the arrangement state of the controlled device and the limit switch, and FIGS. 13(a) to (g) are explanatory diagrams of the operating state. DESCRIPTION OF SYMBOLS 1... Bed main body, 23... Drive shaft, 25... Movable frame, 28. 29... First and second parallel links (parallel link mechanism), 31... Load bed part, 32 ... Floor contact part, 35 ... First O leg floor part, 38 ... Guide member, 39 ... First slider, 53 ... Lifting link mechanism, 66 ... Connection rod (connection member), 68...second
solenoid (stopper mechanism). fiduciary agent

Claims (1)

[Claims] A bed main body, a movable frame that is swingably connected to a midway portion in the longitudinal direction of the bed main body by a parallel link mechanism and has a lumbar floor portion on its upper surface, and the movable frame that is arranged in parallel on one end side of the lumbar floor portion. a back bed part having one end pivotally connected to the lumbar bed part, a leg bed part arranged in parallel on the other end side of the lumbar bed part and having one end pivotally connected to the lumbar bed part, and a bed main body on the lower surface side of the lumbar bed part. a guide member provided along the longitudinal direction; a slider slidably provided on the guide member; and a undulation link that operates in conjunction with the slide of the slider to raise and lower the back floor portion with one end as a fulcrum. a mechanism; a connecting member having one end pivotally attached to the slider and the other end pivotally attached to the leg floor and rotating the leg floor at least downwardly from a horizontal state in response to the slide of the slider; a stopper mechanism that holds the slider so that it cannot slide along the guide member when the back floor section is erect; When the slider is driven forward and backward, the slider slides, and when the slider is driven while being held in a non-slidable state by the stopper mechanism, the movable frame is moved through the parallel link mechanism so that the waist floor portion on the upper surface of the slider is moved. A bed device characterized by comprising a drive shaft that swings in a direction tilting forward and downward.