JPH03254745A - Bed device - Google Patents

Abstract

PURPOSE:To change the attitude of a body, preventing the shoulder part, arm, etc., on the floor part side of a patient from being applied with squeeze and pains by installing a rotary supporting body which revolves in the width direction on a bed body and forming a floor plate body from a plurality of floor parts consisting of side floor plates which are connected in turnable manner only in the upward direction on the center floor plate and both the sides of the center floor plate. CONSTITUTION:A driving mechanism 37 with the floor part in horizontal state is operated, laying a user on his back on a center floor plate 13, and a floor plate body 8 is turned, together with a rotary supporting body 7, as shown by the chained line. When the center floor plate 13 is turned and inclined over a certain angle, rolling wheels 28 installed on a side floor plate 14 shift from the upper edge part 36a of a stopper body 36 and is positioned on an inclined surface 36b, and the side floor plate 14 is lowered downward, in the nearly similar inclined state, according to the tilt of the center floor plate 13. Accordingly, the body of the user is inclined largely sideways, by increasing the tilt of the center floor plate 13, and even if each load applied on the shoulder part and buttocks part is reduced, the shoulder positioned on a floor plate body 8 side, arm part, or breast part is prevented from being nipped by the bent center floor plate 13 and the side floor plate 14.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is directed to a bed device suitable for use with patients.

(Prior Art) Patients who are unable to turn over or sit up due to self-cutting must remain supine on a bed for a long period of time. In this way, if the patient remains supine for a long period of time, so-called bedsores will occur and the patient's pain will increase, so the patient's body position must be changed as appropriate to prevent bedsores. Also,
When such patients eat or read, it is extremely inconvenient if they do not raise their upper body, but it is difficult for the above-mentioned seriously ill patients to do this by themselves.

Therefore, it has been desired to develop a bed device that allows patients to change their body position and raise their upper body without using the knife themselves.

Therefore, the present applicant provided a bed device as shown in Japanese Patent Application No. 168819/1982.

As shown in FIGS. 12 and 13, this prior art has a rotary support 1 formed in the shape of a rectangular bar at the upper end of a mounting plate 102 erected at the central portion of the bed body 101 in the longitudinal direction.
03 is rotatably supported at both ends in the longitudinal direction.

A floor plate body 104 on which a patient lies supine is formed by a plurality of floor parts 107 consisting of a central floor plate 105 and side floor plates 106 connected to both sides thereof so as to be rotatable only in an upward direction. The section 107 is arranged along the longitudinal direction of the rotary support 103 to rotatably connect the center floor plates 105 to each other, and the center floor plate 105 of the floor section 107 located at the center of the bed body 1 is rotated. Support 10
3 and provided on the lower surface of each side floor plate 106 on both sides of the bed body 101 in the width direction.
08 to prevent each side floor plate 106 from descending in conjunction with the rotation of the rotation support 103,
A first drive mechanism 109 is provided on the rotary support 103 to rotate and raise the floor portion 107 located at one end in the longitudinal direction of the bed body 101, and the rotary support 103 is rotated on the bed body 101 in the width direction. Second drive mechanism 1 to move
10, the user's upper body is raised by operating a first drive mechanism 109, and the user's body position is changed by operating a second drive mechanism 110.

By the way, in such a conventional bed device, when the second drive mechanism 110 is operated to rotate the rotary support 103 in order to change the patient's body position, the central floor plate 105 is rotated. The fixed floor plate body 104 is interlocked.

Since the press roller 108 is in contact with the lower surface of the side floor plate 106 of the floor plate body 104, the side floor plate 106 connected to the − width direction side of the center floor plate 105 that descends together with the rotation support body 103 is pressed against the press roller 10B. The side floor plate 106 is prevented from lowering by bending upward and connected to the other side.
maintains the same inclination angle as the central floor plate 105 and rises without bending.

In response to this rotation of the floor plate body 104, the patient's body is laterally tilted, and the patient's body position can be changed in the same way as when turning over in bed. However, as the slope of the floor plate body 104 increases, the center floor plate 10
5 and the side floor plate 106 gradually becomes smaller. That is, as shown in FIG. 13, the floor plate body 104, which was initially in a horizontal state, tilts in conjunction with the rotation of the rotary support. First, the included angle between the center floor plate 105 and the side floor plates 106 is α1. Furthermore, when the floor plate body 104 is inclined, the included angle between the central floor plate 105 and the side floor plates 106 becomes α2, and α2 becomes smaller than α. Furthermore, when the floor plate body 104 is tilted, the included angle between the center floor plate 105 and the side floor plates 106 becomes α3, and α3 becomes smaller than α2. In this way, as the inclination of the floor plate body 104 increases, the inclination of the central floor plate 105 increases, and one end side of the side floor plate 106 always comes into contact with the presser roller 10B and does not fall downward, so that the side floor plate The slope of 106 also increases. Therefore, the central floor plate 105 and the side floor plate 1
As the floor plate body 104 is gradually inclined, the included angle formed by the center floor plate 105 and the side floor plate 106 becomes smaller rapidly.

(Problem to be Solved by the Invention) By the way, in order to prevent bedsores, especially for patients who are bedridden for a long period of time, the patient's body should be tilted laterally as much as possible, and the patient's back and back should be tilted as much as possible. It is necessary to temporarily reduce the load applied to the area. however,
In the conventional bed device as described above, the floor plate body 104
When the slope of the central floor plate 105 and the side floor plate 10 are increased,
6 suddenly becomes very small, so that the shoulders, arms, and chest of the patient located on the floorboard body 104 side are
There is a problem in that the user is caught between the center floorboard 105 and the side floorboards 106, and his shoulders, arms, and chest are compressed and he suffers pain.

This invention was made based on the above circumstances, and its purpose is to prevent the included angle between the central floor plate and the side floor plates from becoming suddenly smaller even if the slope of the floor plate body is increased. To provide a head device in which a user does not feel oppressed or suffer pain.

(Summary of the Invention) This invention provides a bed body with a rotary support member that can freely rotate in the width direction, and a floor plate body for a patient to lie on is connected to a central floor plate on both sides thereof so as to be able to rotate in an upward direction. A plurality of floor sections are formed, each of which is arranged along the longitudinal direction of the rotary support and rotatably connects each other's center floor panels, and the bed body The center floor plate of the floor part located in the center part of the bed is fixed to the rotating support, and rolling wheels rotatably provided on both sides of each side floor plate in the longitudinal direction are provided on both sides in the width direction of the bed body,
The upper end is horizontal and is supported by a stopper body formed with an inclined surface that slopes downward from one end of the upper end, and each of the side floor plates is interlocked with the rotation of the rotation support body. A first driving mechanism is provided on the rotary support body to rotate and raise a floor portion located at one end in the longitudinal direction of the bed body, and the bed body is lowered in substantially the same inclined state. A second drive mechanism for rotating the support body in the width direction is provided, and by operating the first drive mechanism, the user's upper body is raised, and by operating the second drive mechanism, the user's body position is changed. This is a bed device.

According to such a bed device, when the second drive mechanism is operated to rotate the rotary support body in the width direction and gradually incline the floor plate body, the center floor plate and the lowering of the center floor plate are The included angle between the connected side floor plate and the one end of the connected side floor plate gradually decreases from a predetermined angle by the angle of inclination of the central floor plate, so even if the floor plate body is tilted greatly, the included angle between the central floor plate and the side floor plate will remain the same. It does not become smaller suddenly. Therefore, the patient does not become trapped between the central and side floor plates. Therefore, the patient can change his or her body position without suffering pressure or pain to the shoulders, arms, and chest located on the floor side.

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

In the figure, 1 is the ped body. This bed main body 1 is formed from a pair of side plates 2 that are spaced apart from each other in parallel and face each other, a head boat 3 attached to one longitudinal end of the side plates 2, and a foot boat 4 attached to the other end of the side plates 2 in the longitudinal direction. First horizontal rods 5 are installed at both ends of the side plate 2 in the longitudinal direction. A first mounting plate 6 is erected at the longitudinal center of each horizontal rod 5 with its lower end fixed. A rotary support body 7 formed in the shape of a rectangular frame is provided at the upper end portions of these mounting plates 6, with both longitudinal ends of the rotary support body 7 being rotatably supported. In other words, the rotary support body 7 is rotatable in the width direction. A floor plate body 8 is provided on this rotary support body 7. This floor plate body 8 is divided into a plurality of floor parts in a direction perpendicular to the longitudinal direction of the bed main body 1, in this embodiment, first to fourth floor parts,
It is formed from 9.1o and 11.12. Each floor section is formed of a central floor section 13 and side floor plates 14 connected to both sides thereof so as to be rotatable only in an upward direction. The connection structure of these is shown in FIG.

That is, first mounting members 15 each having a rectangular cross section are fixed to both ends of the lower surface of each center plate 13 along the width direction. Both ends of these first mounting members 15 protrude from both sides of the central floor plate 130.

An end portion of a second mounting member 16, which is fixed to the lower surface of the side floor plate 14 and projects from one end thereof, is pivotally connected to this projecting end. This second mounting member 16 has a larger U-shaped cross section than the first mounting member 15, and is in a state in which the first mounting member 15 is accommodated therein. Therefore, the side floor plates 14 can freely rotate in the upward direction shown by the arrow in FIG. 8 with respect to the central floor plate 13, but are prevented from rotating downward in the opposite direction.

The central floor plate 13 of the second floor section 10 is fixed to the rotating support 7. Further, the central floor plates 13 of each floor section are rotatably connected to each other via tongue pieces 17 extending from both ends in the width direction of the end portions along the longitudinal direction of the bed body 1. The first floor portion 9 is rotated and raised by a first drive mechanism 18. That is, as shown in FIG. 2, the first drive mechanism 18 includes a drive source 19 and a drive shaft 20 that is driven in the axial direction by the drive fi 19. The drive source 19 is pivotally connected to a bracket 21 that hangs down from the lower surface of the end of the upper g rotation support 7 located on the footboard 4 side. One end of an arm 22 is pivotally attached to the tip of the drive shaft 20. The other end of the arm 22 is fixed to a midway portion of the operating shaft 23. The operating shaft 23 has both ends fixed to a pair of mounting plates 24 provided along the longitudinal direction on the lower surface of the central floor plate 13 of the first floor section 9, as shown in FIG. One end of these mounting plates 24 protrudes toward the lower surface of the second floor 10, and a roller 25 is rotatably provided at the protruding end, as shown in FIG. These rollers 25 have one end fixed to the lower end of the central floor plate 13 of the third floor section 11 and are slidably engaged with a guide member 26 having a U-shaped cross section. Further, the central floor plate 13 of the fourth floor section 12 and the rotation support body 7
are connected by a link 27. Therefore, the first
When the drive source 19 of the drive mechanism 18 is activated to drive the drive shaft 20 in the direction shown by the arrow in FIG. . As the first floor section 9 rotates and rises, the roller 25 presses the guide member 26 and rotates it, so that the third floor section 11
rotates in a direction in which the other end is raised using one end, which is the pivot end with the second floor part 10, as a fulcrum, and this rotation causes the fourth floor part 12
are now linked.

On the other hand, a pair of wheels 28 are rotatably provided at both ends 14a in the longitudinal direction of each of the side floor plates 14 in a state that they protrude from both ends 14a. That is, as shown in FIG. 10, a strength member 30 with a through hole 29 is fixed inside the side end gBl 4a of the side floor plate 14, and a flange 3]a is provided on one end side, and a cylindrical shape is formed. A spacer 31 having a flange 31a is fixed to the inner side of the strength member 30, and is inserted into the through hole 29 of the strength member 30, so that one end side 31b of the spacer 31 is attached to the side floor plate 1.
It is provided so as to slightly protrude from the side end portion 14a of 4.

Then, a wheel 28 housing a bushing 32 rotatably in the center core with one end thereof slightly protruding connects one end of the bushing 32 to one end 31b of the spacer 31. By inserting the bolt 34 through the bush 32 and spacer 31 through the washer 33 from one end, and screwing the two nuts 35 onto the other end, the rolling wheels 28 are slightly protruded from the side floor plates 14. It is provided. Further, a plurality of stopper bodies 36 are erected and fixed to the side plate 2 of the bed body 1 to support the rolling wheels 28 provided on each side floor plate 14. As shown in FIG. 6, this stopper body 36 is formed into a substantially trapezoidal shape with an upper end 36a horizontally formed and an inclined surface 36b inclined downward from one end side of the upper end 36a. Become. The stopper body 36 is erected with its lower side fixed to the side plate 2 with the inclined surfaces 36b facing inward of the bed body 1. Further, as shown in FIG. 1, the stopper body 36 is located outside one end of each of the first floor 9 and the fourth floor 112, and further,
Between the first floor section 9 and the second floor section 10, between the second floor section 1o and the third floor section 11, between the third floor section 11 and the fourth floor section 12
It is provided between the floor portions 9, 10, 11, and 12 without contacting the floor portions 9, 10, 11, and 12. Each stopper body 36 supports a rolling wheel 28 provided on each side floor plate 14, so that the side floor plate 14 of the floor plate body 8 moves along the stopper body 36 as the rotary support body 7 rotates. It has become. and,
The rotary support body 7 is rotationally driven in the width direction by a second drive mechanism 37. As shown in FIG. 4, the second drive mechanism 37 includes a drive R3B and a drive shaft 39 driven in the axial direction by this drive source 38. The driving source 38 is connected to a pair of second horizontal rods 4 on the lower surface side of the third floor portion 11.
It is pivotally connected to a support member 41 attached to 0. The second horizontal rods 40 have both ends fixed to both ends of the pair of first horizontal rods H5, and both ends fixed to a pair of vertical rods 42 constructed along the longitudinal direction of the bed body 1. It is constructed along the width direction of the bed body 10. A support shaft 43 is installed between both ends of the vertical rod 42 in the longitudinal direction so as to be freely rotatable along the width direction of the bed body l.

A first arm 44 made of a pair of plate materials is provided in the middle of each support shaft 43 with one end fixedly fixed thereto. Both ends of links 45 are rotatably connected to the other ends of the pair of first arms 44 located at both ends of the bed body in the longitudinal direction, respectively, by pivots 46. The drive shaft 39 is attached to the pivot shaft 46 of the first arm 44 located on the bed boat 3 side.
The tips are rotatably connected. In addition, each of the above-mentioned support shafts 4
One end of a second arm 47 is fixed to one end of the second arm 47 at an angle substantially perpendicular to the first arm 44. Between the other ends of these second arms 47 and a bracket 48 fixed to the rotation support 70 in the width direction, there are rod end bearings 49 screwed to both ends, as shown in FIG. A connecting shaft 50 is provided therebetween. This connecting shaft 50 has threads formed in opposite directions at both ends, and both ends are screwed into the rod end bearings 49, respectively, and an operating body 51 for rotating this connecting shaft 50 is fixed to the middle part. ing. Therefore, the connecting shaft 50 can be freely swung back and forth and left and right with respect to its axis by the rod end bearing 49, and the distance between the pair of rod end bearings 49 can be adjusted by rotating the operating body 51. ing. When the drive source 38 of the second drive mechanism 37 is activated and the drive shaft 39 is driven in the protruding direction shown by the arrow in FIG. Since the second arms 44 and 47 rotate via the link 45, the connecting shaft 5o is pushed up by the second arm 47, and the rotating support 7 is connected to the connecting shaft 5o, as shown in FIG. One axial end of the shaft is rotated in the upward direction. Further, when the drive shaft 39 is driven in the opposite direction, the rotary support body 7 is rotated in a direction in which one end in the axial direction to which the connecting shaft 50 is connected is lowered. In other words,
The rotating support 7 is attached to the mounting plate 6 as shown by the dashed line in FIG.
It can be rotated left and right using the pivot point as a fulcrum.

When the rotary support body 7 rotates, the second floor portion lO
The floor plate body 8 to which the central floor plate 13 is fixed is interlocked. A stopper body 36 supports a rolling wheel 28 that is rotatably provided at both longitudinal end portions 14a of each side floor plate 14 of the floor plate body 8, slightly protruding from the side end portion 14a. Therefore, the side floor plates 14 connected to the width direction of the central floor plate 13 that descend together with the rotating support 7 have their pivoting ends connected to the central floor plate 13 lowered together with one side of the central floor plate 13;
Since the other end side is located on the upper end portion 36a or the inclined surface 36b of the stopper body 36, it is bent upward in an inclined state. The side floor plates 14 connected to the other side rise while maintaining the same inclination angle as the center floor plate 13 without bending.

Incidentally, casters 52 are rotatably provided at the lower ends of the head boat 3 and foot boat 4.

According to the bed device configured in this way, if the first drive mechanism 18 is operated to rotate and raise the first floor portion 9 as shown by the dashed line in FIG. The user who is lying on his back has his upper body raised up by the first floor section 9. Therefore, you can eat, read, etc. with ease. or,
When the first floor section 9 is rotated and raised, the third
The floor portion 11 and the fourth floor portion 12 are tilted such that their pivot ends are raised. Therefore, the user's buttocks, which are located 1° above the second floor part, are prevented from shifting forward by the slanted third floor part 11, so the user is prevented from doing things such as pressing his or her feet down. You can easily maintain an upright posture without lifting your upper body.

On the other hand, with the first to fourth floor sections 9, 10, 11, and 12 in a horizontal state, the user is made to lie down on the center floor plate 13 of each floor section, that is, at the center of the floor plate body 80 in the width direction. Drive mechanism 3
7 is activated, and the floor plate body 8 is rotated together with the rotating support body 7 as shown by chain lines in FIGS. 5 and 11. Then, the user's body is tilted laterally in accordance with the rotation of the floorboard body 80, so that the user's body position can be changed in the same way as when turning over in bed. At this time, when the floor plate body 8 is in a horizontal state as shown in FIG. ! 836a and is in a horizontal state.

Then, when the rotating support body 7 rotates a little, the floor plate body 8
The center floor plate 13 of the center floor plate 13 is in an inclined state as shown by the dashed line in conjunction with the rotation of the rotary support body 7. At this time, the rolling wheels 28 provided on the side floor plate 14 are again located on the upper end portion 36a of the stopper body 36, and the side floor plate 14 is in an inclined state.

The included angle between the center floor plate 13 and the side floor plates 14 at this time is α. When the rotary support body 7 further rotates, the central floor plate 13 becomes further inclined as shown by the two-dot chain line. At this time as well, the rolling wheels 28 provided on the side floor plate 14 are located on the upper end portion 36a of the stopper body 36, and the side floor plate 14 is in a state of being more inclined than before. If the included angle between the center floor plate 13 and the side floor plates 14 is α2, then α2 is a slightly smaller angle than α1. and,
When the rotary support 7 is further rotated, the central floor plate 13 will be in an inclined state as shown by the three-dot chain line. At this time, side floor plate 1
The rolling wheels 28 provided at 4 are connected to the inclined surface 36 of the stopper body
b, the side floor plate 14 is lowered downward while remaining slanted to approximately the same degree as before. And the center floor plate 1
3 and the side floor plate 14 is α3, α3 is slightly smaller than α2, but even if the rotation support 7 is further rotated to tilt the central floor plate 13, the floor plate body 8 Although the included angle between the central floor plate 13 and the side floor plates 14 is not shown,
The size is only reduced by the slope of the central floor plate 13.

That is, when the floor plate 8 is initially in a horizontal state, the roller provided on the side floor plate 14 is located on the horizontally formed upper end portion 36a of the stopper body 36. Then, the rotary support body 7 rotates, and the central floor plate 13 rotates and tilts accordingly, but the rolling wheels 28 provided on the side floor plates 14 move above the upper end portion 36a of the stopper body 36. While the side floor plate 14 is located on one side where the rolling wheels 28 are provided, it does not fall downward, but on the other hand, the side connected to the center floor plate 13 moves downward as the inclination of the center floor plate 13 increases. Therefore, the slope of the side floor plate 14 increases. Therefore, the included angle between the center floor plate 13 and the side floor plates 14 becomes smaller as the inclination of the center floor plate 13 becomes larger. however,
When the central floor plate is tilted by more than a certain angle with 13 forces and 10 movements,
The rolling wheels 28 provided on the side floor plate 14 are connected to the stopper body 36
It moves from the upper end 36a and is located on the inclined surface 36b. In this case, the side floor plates 14 themselves will move downward as a whole as the center floor plate 3 inclines while remaining in substantially the same inclination state. Therefore, as the inclination of the center floor plate 13 increases, the connecting end of the center floor plate 13 and the side floor plate 14 will go down, or because the one side where the rolling wheels 28 of the side floor plate 4 are installed also goes down, the side The horizontal floor plate 14 is lowered downward in the same inclined state. Therefore, even if the central floor plate 13 tilts further thereafter, the included angle between the central floor plate 3 and the side floor plates 14 will only gradually become smaller than the predetermined angle by the angle that the central floor plate 13 is tilted. As described in the conventional example, as the center floor plate rotates, the included angle between the center floor plate and the side floor plates increases by the sum of the angle of inclination of the center floor plate and the angle of inclination of the side floor plates. ζ
Even if the central floor plate is not inclined very much, the included angle between the central floor plate and the side floor plates does not become small rapidly. Therefore, even if the floor plate body is rotated to increase the inclination of the central floor plate and the user's body is tilted laterally to reduce the load applied to the user's back and balance, The user's shoulders located on the floorboard body 8 side,
Since the arms and chest are not sandwiched between the bent central floorboard 13 and the side floorboards 14, each part of the user does not feel pressure or pain, and the user's body position can be made comfortable. can be converted.

In this way, by tilting the floorboard body 8 alternately in both left and right directions at regular intervals, users who are unable to turn over on their own will not experience pressure or pain and will be able to avoid bedsores. can be prevented.

(Effects of the Invention) As described above, according to the present invention, the floor plate body is formed from a plurality of floor parts, and the floor part located at the end side in the longitudinal direction of the bed body can be rotated and raised. In addition, each floor section is formed of a central floor plate and side floor plates connected to both sides thereof so as to be rotatable only in the upward direction, and having rolling wheels rotatably provided on both sides in the longitudinal direction. At this time, the bed body is provided on both sides in the width direction of the bed body, has a horizontal upper end, and has an inclined surface that slopes downward from one end side of the upper end. The stopper body supports the wheels installed on the side floorboards,
After the floor plate body has been rotated beyond a predetermined level, the side floor plates on the lower end side remain at approximately the same slope and move downwards in conjunction with the rotation of the floor plate body, resulting in the formation of the center floor plate and the side floor plates. The included angle is made smaller by the inclination angle of the central floor plate from a predetermined angle. Therefore, the user on the floorboard body can raise his or her upper body by rotating and raising the floor part, and by rotating the floorboard body in the width direction, the user can change his or her body position just like turning over in bed. Moreover, the user is prevented from falling from the floorboard body by the side floorboards bending upward at this time. Furthermore, even if the floorboard body rotates more than a predetermined amount,
Since the included angle between the center floor plate and the side floor plates of the floor plate body gradually decreases by the angle of the center floor plate that gradually slopes from a predetermined angle, the included angle between the center floor plate and the side floor plates becomes smaller. Since the angle between the center floor plate and the side floor plates can be gradually reduced even if the floor plate body is tilted significantly, the angle between the central floor plate and the side floor plate can be gradually reduced, and the shoulders and arms of the user located on the side of the floor plate body can be gradually reduced. , there is no pressure on the chest, and even if the user's body is tilted laterally, the user will not feel any pressure or pain.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a plan view of the entire structure with the second drive mechanism omitted, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 4 is a sectional view taken along line IV-IV in FIG. 3,
Figure 5 is a side view taken along line V-V in Figure 3, Figure 6 is an enlarged sectional view taken along line V1-Vl in Figure 1, Figure 7 is a front view of the overall structure, and Figure 8 is the center. FIG. 9 is an enlarged cross-sectional view of the connecting part between the floor plate and the side floor plate, FIG. 9 is an enlarged cross-sectional view of the connecting structure between the connecting shaft and the rotating support, and FIG. 10 is an enlarged cross-sectional view of the mounting structure between the side floor plate and the rolling wheels. Figure 11 is an explanatory view showing the included angle between the center floor plate and the side floor plates when the floor plate body is rotated, Figure 12 is a side view showing the conventional example, and Figure 13 is the conventional example. It is an explanatory view of the included angle formed by the center floor plate and the side floor plate when the floor plate body is rotated. l ・ ・ 7 ・ ・ 8 ・ ・ 9~12 13 ◆ ・ 14 ・ ◆ 18 ・ ・ 28 ・ ・ 36 ・ ・ 36a ・ 36b ・ 37 ◆ ◆ ・Bed body, rotating support body, floor plate body, floor part, center floor plate・Side floor plate ・First drive mechanism ・Rolling wheels ・Stopper body ・Top end of stopper body ・Slope surface of stopper body ・Second drive mechanism

Claims (1)

[Claims] a bed main body, a rotation support body disposed along the longitudinal direction of the bed main body, whose longitudinal ends are pivotally supported by the bed main body so as to be rotatable in the width direction; a central floor plate; and side floor plates rotatably connected to each other are arranged along the longitudinal direction of the rotary support, and the central floor plates of each floor part are rotatably connected to each other. and a floor plate body in which the center floor plate of the floor portion located in the longitudinal center portion of the bed body is fixed to the rotation support, and on both sides of the side floor plates of each of the floor portions in the longitudinal direction,
A rolling wheel that slightly protrudes from the side floor plate and is rotatably provided, and a first rotary wheel that is provided on the rotary support and that rotates and raises a floor portion that is located at one end in the longitudinal direction of the bed body. and a driving mechanism, which is provided on both sides of the bed body in the width direction, has an upper end that is horizontal, and has an inclined surface that slopes downward from one end of the upper end, and is located on the side of each of the floorboards. A stopper body for supporting a rolling wheel provided on a floor plate; and a stopper body provided on the bed body, which rotates the rotation support body in the width direction to tilt the central floor plate of each floor portion, and one end of the central floor plate from which the central floor plate descends. One side of the side floor plate connected to the side is supported by the stopper body to make this side floor plate in an inclined state, and when the center floor plate is gradually inclined, the side floor plate is interlocked with the inclination of the center floor plate. Then, the side floor plates are moved downward while maintaining substantially the same inclination, so that the included angle between the center floor plate and the side floor plates is gradually reduced by the angle of inclination of the center floor plate from the predetermined angle. A bed device comprising: a second drive mechanism for raising a side floor plate on the other end side of the rising central floor plate at the same inclination angle as the central floor plate.