JP2910589B2 - bed - 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, and more particularly to a bed provided with a back frame that can be raised with respect to a main body frame.

[0002]

2. Description of the Related Art Conventionally, this type of apparatus used for medical purposes and the like is disclosed by the applicant of the present invention in Japanese Utility Model Publication No. 60-1056.
No. 9 sick bed and the like are known. This bed disassembles the waist from the main part of the mattress,
The waist of the mattress is formed to be slidable in the left-right direction via a sliding mechanism, and by sliding the waist of the mattress in the left-right direction, one nurse can easily turn over just by slightly lifting the sick person. It is no longer necessary to force the sick.

Further, in this type of bed, the back frame is positioned below the back mattress and pivotally supported on the body frame, and the back frame and the back mattress are automatically pivoted about the pivot portion. Alternatively, there is also known a device that rises upward and rotates manually.

However, in such a bed in which the dorsal frame rises, when the dorsal frame is pivoted upward, the dorsal mattress and the dorsal mattress abut against each other and are pushed in the dorsal direction, so that the patient may not be able to do so. There was a problem that the patient was pushed together with the side mattress, and as a result, the patient had to be moved to the original position.

In view of this problem, the same applicant has disclosed a moving member having an arc portion below the back frame in a bed in which a back frame is provided so as to be able to be raised on a main body frame of Japanese Utility Model Application Laid-Open No. 3-33627. And an arcuate guide portion on which the moving member slides is provided on the main body frame.

[0006]

SUMMARY OF THE INVENTION
In the bed of No. 27, it is possible to prevent the back mattress from pressing the waist mattress by moving the back frame diagonally forward when the back frame is raised and rotated.

However, in this bed, as described on page 4 in the specification attached to the application filed with the same application, the guide member is formed of a rectangular frame, and the inner surfaces of the left and right side plates are concentric. A guide groove having an inner arc portion and an outer arc portion is formed, a moving member slidably inserted through the guide groove is formed, and a back frame is fixed to the moving member integrally, and the guide member itself is fixed. There is a surface where the mechanism is relatively complicated because it slides along the guide groove.

On the other hand, this type of bed is used by laying a mattress or a futon, but there is also a problem that the mattress or the futon is easily shifted by simply laying as in the prior art.

Accordingly, an object of the present invention is to provide a bed which has a simple structure and can prevent the back mattress from pushing the waist mattress when the back frame rises.

[0010]

A bed according to claim 1 has a front headboard and a rear headboard, and a pair of left and right side frames disposed narrower than the front headboard and the rear headboard. In a bed in which a back frame and a waist frame are arranged side by side on a frame and the back frame is provided so as to be able to rise up via a pivotal support portion, an inner surface of the pair of left and right side frames at a rear lower end of the back frame. A frame-shaped guide member having left and right side plates, a front stopper and a rear stopper is provided, and a swing member in which a main shaft formed long in the left-right direction of the main body frame is inserted at a lower portion is arranged in the guide member. Forming the pivot portion above the swinging member, providing the pivot portion with a rotatable, substantially square-tube-shaped fixture, and fixing the upper surface of the fixture to the rear rear surface of the back frame. The Rukoto, in which swingable back and forth on the main body frame the pivot portion is provided on the can with said body frame rising the back frame through a pivot portion through the swing member and the main shaft.

In the bed according to a second aspect of the present invention, the waist side frame is provided on the main body frame so as to be slidable in the lateral direction.

[0012]

In the structure of the first aspect, when the back frame is rotated upward while pulling forward, the swinging member falls forward and abuts against the front stopper, whereby the pivot portion moves forward. In this way, the back frame can be rotated and raised, and the pivot supporting the pivot of the back frame to the main frame can be moved forward, so that the back mattress moves without pressing the waist mattress. Thus, the lumbar mattress does not move and push the patient.
Moreover, the structure is simple.

[0013] Further, according to the configuration of the second aspect, the waist frame can be slid in the lateral direction, and in particular, even when the back frame is raised, the back frame can slide in the lateral direction without disturbing. .

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show a first embodiment of the present invention, in which 1 is a main body frame, and this main body frame 1 has front and rear headboards 2 and 2A, and these front and rear headboards 2 and 2A.
It has left and right side frames 3, 3 arranged narrower than the rear head boards 2, 2A. The main body frame 1
A rear frame 4 and a waist frame 5 having substantially the same width as the front and rear headboards 2 and 2A are provided side by side, and each of the frames 4 and 5 has substantially the same width as the frames 4 and 5. The back mattress 6 and the waist mattress 7 are provided.

A recess 8 is formed in the side frame 3 at the rear lower portion of the back frame 4 and a frame-like guide is formed below the recess 8 on the inner surface of the side frame 3. The member 9 is provided integrally. The guide frame 9 includes left and right side plates 10 and 10 and plate-like inclined front and rear stoppers 11 and 12 with which a swing member described below abuts. 13 are arranged vertically,
The swing member 13 has a substantially rectangular cylindrical shape, and a main shaft 14 is inserted through a lower portion of the swing member 13. The main shaft 14 is formed to be long in the left-right direction of the main body frame 1, and The swing members 13, 13 are configured to be rotatable in left and right guide members 9, 9, respectively. The upper end of the swing member 13 protrudes upward from the upper part of the guide member 9, and the mounting member 16 rotates between the left and right side plates 13 A, 13 A of the swing member 13 via a swing shaft 15 serving as a pivotal support. The mounting member 16 has a substantially rectangular cylindrical shape, and a step 16B is formed on the front side of the upper surface 16A as shown in FIG. The left and right mounting members 16 and 16 are rotatably provided on the left and right swing members 13 and 13 respectively by the swing shaft 15, and the left and right ends of the swing shaft 15 are respectively left and right recessed portions. The swing shaft 15 extends outward from the bottom 8A of the recess 8 at a position where the swing member 13 contacts the front and rear stoppers 11, 12.
Note that an angle fixing mechanism (not shown) is provided between the mounting member 16 and the swing member 13 so that the angle of the mounting member 16 with respect to the swing member 13 can be arbitrarily fixed. In the raised state, the lower surface of the mounting member 16 comes into contact with the rear plate of the swinging member 13, and the upper edge of the guide member 9 is provided flush with the bottom portion 8A. ing. On the outer surfaces of the left and right side frames 3, a hook 17 that can be locked to the outer end of the swing shaft 15 is rotatably provided.
At the position where the swing shaft 15 contacts the bottom 8A of the recess 8 while being in contact with the swing shaft 15, the swing shaft 15 is locked to the swing shaft 15 so that the swing shaft 15 can be fixed and released. ing. Then, the upper surface 16A of the mounting member 16 is fixed to the rear rear surface of the back frame 4 so that the pivot shaft
The back side frame 4 is provided on the main body frame 1 so as to be able to rise up, and the swing shaft 15 is connected to the main body frame 1 via a swing member 13 and a main shaft 14 so as to be able to swing back and forth, The range of forward and backward movement of the swing member 13 is regulated by the guide member 9.

A guide roller 18 is mounted on the lower side of the back side frame 4, and the guide roller 18 is fitted on a guide rail 19 laid horizontally on the main body frame 1. The guide roller 18 and the guide rail 19 constitute a slide mechanism S that slides the waist-side frame 5 in the lateral direction.

Next, the method of using the bed will be described. When the back frame 4 is folded down, the lower surface of the back frame 4 contacts the upper edge 3A of the side frame 3, and the back frame 4 is The state is horizontal with the frame 5. In this state, as shown in FIG.
The pivot shaft 15 is in contact with the bottom 8 A of the recess 8 while being in contact with 12. Then, the sick person is laid on the bed, and the waist-side mattress 7 can be manually slid in the left-right direction by the rolling of the guide rollers 18 on the guide rails 19, so that only one nurse lifts the sick person lightly. It can be easily laid down, and it is easy to put on and take off bedclothes, change diapers, relieve bedsores, etc., and it does not cause pain to the sick because it is not overwhelmed by the sick. And, from the horizontal state, the back mattress 6
When the back frame 4 is turned upward while pulling the back frame 4 forward by a lifting device such as a cylinder (not shown) or manually, the swinging member 13 falls forward and comes into contact with the front stopper 11,
As a result, the pivot shaft 15, which is a pivot, moves forward, and the recess 8
Abuts on the bottom 8A. In this manner, the back frame 4
The rear frame 4 can be rotated and raised until the rear lower corner 4A contacts the bottom 8A.
Can move the swing shaft 15 pivotally supporting the body frame 1 forward, so that the back mattress 6 moves without pressing the waist mattress 7, and therefore the waist mattress 7 moves to push the patient. Nor. Also, since the waist mattress 7 is not pressed by the back mattress 6,
The waist frame 5 can be swung in the left-right direction via the guide rollers 18 when the back mattress 7 is raised and rotated. Further, the swinging shaft 15 can be fixed by locking the hook 17 to the swinging shaft 15 in a state where the swinging member 13 is in contact with the front stopper 11.

As described above, in the present embodiment, a front headboard 2 and a rear headboard 2A, and a pair of left and right sides arranged narrower than the front headboard 2 and the rear headboard 2A. In a bed in which a back frame 4 and a waist frame 5 are arranged side by side on a main body frame 1 having a side frame 3, and the back frame 4 is provided so as to be able to rise up via a swing shaft 15 serving as a pivotal support, Left and right side plates 10, 10, a front stopper 11 and a rear stopper 12 are provided on inner surfaces of the pair of left and right side frames 3 at the rear lower end of the back frame 4.
And a swing member 13 having a main shaft 14 elongated in the left-right direction of the main body frame 1 inserted through a lower portion thereof is disposed in the guide member 9. The swing shaft 15 is provided above the member 13, and the swing shaft 15
A substantially rectangular cylindrical mounting member 16 is provided rotatably on the mounting member 16.
Is fixed to the rear rear surface of the back side frame 4 so that the back side frame 4 is provided on the main body frame 1 via the swing shaft 15 so as to be able to stand up and the swing shaft 15 is connected to the swing member 13. And the main frame is provided so as to be able to swing back and forth through the main shaft 14, so that the swinging shaft 15 swings back and forth.
Can be raised and rotated without pushing the waist-side mattress 7. In particular, since the swing shaft 15 for pivotally supporting the back frame 4 to the main body frame 1 moves forward, the back mattress 6 moves without pressing the waist mattress 7, and accordingly, the waist mattress 7 moves. The patient is not pushed away.

As described above, in the present embodiment, the waist-side frame 5 is provided on the main body frame 1 so as to be slidable in the lateral direction. In particular, even when the back frame 4 is raised, the back frame 4 and the back mattress 6 can slide the waist frame 5 in the horizontal direction without disturbing the posture of the sick. .

As an effect of the embodiment, the width of the left and right side frames 3 is smaller than the width of the waist frame 5, so that when the waist frame 5 is moved in the lateral direction, a finger is moved to the side frame. It is excellent in safety without hitting 3 or 3. Further, the swing member 13 rotates through the main shaft 14,
Since the swing shaft 15 at the upper end of the swing member 13 swings back and forth while drawing an arc, it swings upward while pulling the back frame 4 forward, and as shown in FIG. 15 is bottom 8A
When it comes to the upper position of the main shaft 14 away from the
The rocking shaft 15 can be moved smoothly so that the 13 falls forward. Then, the back frame 4 can be raised, and the swing shaft 15 can be locked and fixed by the hook 17. Also, when the back frame 4 is defeated,
Can be easily returned to the horizontal position by pushing it backward while rotating it downward.

FIGS. 5 and 6 show a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Instead of providing a mattress on each of the frames 4 and 5, artificial turf 20 and 20A are respectively fixed and provided by bonding or the like. The artificial turf 20, 20A is made of a synthetic resin such as nylon or polyethylene, for example, and has a green flat yarn such as a pile yarn. Further, the main body frame 1 has a pivot portion 21 located between the side frames 3 and 3.
The lower end of the telescopic support member 22 is pivotally attached to a damper or the like at the pivot portion 21, and the telescopic rod 22 of the telescopic support member 22 is provided.
The tip of A is pivotally connected to the rear surface of the back frame 4 via a pivot 23.

In this embodiment, the guide rail and the guide member are not provided, and the guide rod 24 is
And a pair of slide support members 25 such as slide bearings that slide along the guide rods 24 are provided on the lower side of the waist side frame 5 on the waist side and the foot side, respectively. 25 constitutes a slide mechanism S for sliding the waist side frame 5 in the lateral direction. A U-shaped mounting frame 26 is provided on the left and right of the guide rod 24.
26 are fixedly attached to each other, and the mounting frames 26, 26 are externally fitted to the waist side and foot side portions of the side frames 3, 3 from above, so that the guide rod 24 is laterally interposed between the left and right side frames 3, 3. It is suspended. Further, at the lower end of the outer plate of the mounting frame 26, a mounting piece portion corresponding to the guide rod 24 on the waist side is provided.
26A is extended below the lower end of the side frame 3, and an operation shaft 27 is rotatably provided between the left and right mounting pieces 26A, 26A.
A lower end of a positioning piece 28 corresponding to the side surface position of the fixing member 25 is fixed, and an operation handle 29 is provided at an outer end of the operation shaft 27. The operation shaft 27, the positioning piece 28 and the operation handle 29 constitute a fixing mechanism K for fixing the waist-side frame 5 in a lateral slide.

Then, as shown in FIG.
When the pivot 29 is turned to the substantially horizontal position, the upper end of the positioning piece 28 is displaced from the side position of the slide support member 25, and the waist frame 5 can slide left and right. Is rotated upward, the slide support member 25 is restricted by the positioning piece 28 and fixed in position. In FIG. 6, when the waist side frame 5 is moved to the right side and fixed by the fixing mechanism K, the left side surface of the slide support member 25 on the right side in FIG. The movement of the side frame 5 is restricted, while the slide support member 25 on the right side in FIG.
28, the movement of the waist frame 5 to the right in the drawing is restricted.

As described above, this embodiment also has the same functions and effects as those of the first embodiment, corresponding to the first and second aspects.
Further, in this example, when futons or mattresses (not shown) are laid on the back side frame 4 and the waist side frame 5, they are prevented from slipping by the artificial turf 20, 20A, and can be stably laid without displacement. It is possible to clean the artificial turf 20, 20A by removing the futon or the mattress, so that the bed can be kept clean. Also, the back frame 4
Since the main frame 1 and the main frame 1 are connected by the telescopic support member 22, the rear frame 4 can be raised and rotated lightly even manually. Further, in the slide mechanism S, the guide frames 24 are easily fitted to the bed by fitting the mounting frames 26, 26 to the side frames 3, 3.
Can be mounted, and furthermore, since the fixing mechanism K for fixing the lateral slide of the waist frame 4 is provided, the waist frame 5 can be fixed at a desired left and right position. At the center position, the slide support member 25 is positioned from the left and right by the positioning pieces 28, 28, so that the position can be securely fixed and safe. When a slide bearing is used for the slide support member 25, the waist frame 5 can be slid in the lateral direction with a relatively small force. Also, in the first and second embodiments, even if the back frame 4 is rotated with the sheets (not shown) laid, the sheets at the boundary between the back side and the waist side frames 4 and 5 are also obtained. Wrinkles can be suppressed.

FIGS. 7 and 8 show a third embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. An electric hoisting device 31 for raising the back frame 4 is provided, and the hoisting device 31 is suitable for use in the bed of the first embodiment or the bed of the second embodiment,
Positioned on the front side of the main body frame 1, the upper side of the bracket 33 is fixed to the side frames 3, 3 by the fixing portion 32,
The front side of a cylindrical driving body 34 is pivotally connected to the lower part of the bracket 33 by a pivot 35, and the rear part of the driving body 34 is provided so as to be swingable, and a rear side guide groove is provided. A moving shaft 37 serving as a moving part that moves along the guide groove 36 is formed.
The driving body 34 is provided with a rotation driving means 38 such as a motor.
The moving shaft is driven by the rotation of the rotation driving means 38.
It has a transmission means (not shown) for moving the 37 back and forth. A central shaft 39 is horizontally provided between the side frames 3 and 3 at the front side of the concave portion 8, and a bent portion of a substantially O-shaped transmission arm 40 is rotatably provided on the central shaft 39, and its transmission is provided. The arm 40 integrally has a long piece 40A and a short piece 40B, and a roller 41 for rolling on the lower surface of the back frame 4 is rotatably mounted on the tip of the long piece 40A. The tip of 40B is rotatably connected to the moving shaft 37. Further, as shown in FIG. 8, the moving shaft 37 and the swinging shaft 15 are connected by a connecting arm 42, and a long hole 43 in a longitudinal direction is formed at a rear end side of the connecting arm 42. This long hole 43
The front inner edge 43A close to the swing shaft 13 at the position where the swing member 13 contacts the rear stopper 12, and the position where the swing member 13 contacts the front stopper 11, Swing axis
And a rear inner edge 43B close to the rear frame 15. The connecting arm 42 and the moving shaft 37 constitute an interlocking mechanism R for moving the swing shaft 15 back and forth in conjunction with the rotation of the back frame 4. I have.

Next, the operation of the raising / lowering device 31 and the interlocking mechanism R will be described. As shown in FIG. 7, when the moving shaft 37 is located in front of the guide groove 36, the back frame 4 is Is placed on the upper edge. When the moving shaft 37 is moved forward by the driving means 38 from this state, the transmission arm 40 rotates about the central axis 39, and the long piece 40A
While the roller 41 at the tip rolls, the rear frame 4 is raised. Further, the short piece 40B also rotates in the same direction, the moving shaft 37 moves forward along the guide groove 36, and the front side of the driving body 34 swings about the pivot 35. In this way, the back frame 4 is linked to the up-and-down movement, and the swinging shaft 15 is
Moves forward. Further, the interlocking mechanism R will be described in detail. The solid line in FIG. 8 indicates a state where the back frame 4 is mounted on the upper edge of the side frame 3 and the moving shaft
When 37 moves forward, the axis of movement is almost the length of slot 43.
After the movement of the moving shaft 37, the rear inner edge 43B of the long hole 43 is locked to the moving shaft 15, and the swinging shaft 15 moves forward with the movement of the moving shaft 37. Contact 11 In this way, since the swing shaft 15 moves forward after the back frame 4 has been raised by a predetermined angle, the front end of the back frame 4 and the front headboard 2 can be arranged close to each other.
Even when the back frame 4 is tilted to the horizontal position, the moving shaft 37 moves substantially by the length of the long hole 43, and after the back frame 4 has tilted by a predetermined angle, the swing shaft 37 moves rearward. The back frame 4 can be stably raised and lowered.

As described above, this embodiment has the same functions and effects as those of the first embodiment, corresponding to the first and second aspects.
Further, in this example, by providing an electric hoisting device 31 for raising and lowering the back side frame 4, the back side frame 4
The swinging shaft 17 can be automatically moved forward and backward through the interlocking mechanism R by the operation of the hoisting device 31 and the interlocking mechanism R can be fixed. After the side frame 4 has risen up to a predetermined angle and after it has started to fall down and has fallen down by a predetermined angle, the swing shaft 17 is moved back and forth, so that the front head boat 2 is not in the way and the up-and-down operation of the back side frame 4 is smooth. Can be done.

FIG. 9 shows a fourth embodiment of the present invention. The same parts as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. In the bed of the second embodiment, the back frame 4 is fixed to the side frames 3 and 3, and the waist frame 5 is slid laterally by a slide mechanism S. A fixing mechanism K for fixing the slide is provided. Further, in this example, the artificial grass 20 and 20A are used for the back frame 4 and the waist frame 5, however, the back mattress 6 and the waist mattress 7 may be provided respectively.

As described above, in this embodiment, the waist frame 5
Can slide in the lateral direction, so that the posture of the sick person can be changed.
If a futon or mattress (not shown) is laid, the slip is prevented by the artificial turf 20 or 20A, so that it can be stably laid without displacement, and the futon or mattress is removed to remove the futon or mattress. The bed can be kept clean because it is only necessary to clean the bed.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. Various types can be used. Further, the waist side frame may be divided into two in the front-rear direction on the waist side and the foot side, and the frame on the back side frame side of the two divisions may be provided to be slidable in the lateral direction. Further, the slide mechanism S and the fixing mechanism K shown in the second embodiment may be provided on the waist-side frames of the first and third embodiments so as to be slidable and fixable in the lateral direction. Furthermore, an elastic machine such as a coil spring may be provided in a part of the connecting arm. Further, the sliding of the waist frame in the left-right direction may be performed by an electric motor or the like, or may be performed by an electric crank mechanism. Further, the back frame is not limited to the embodiment,
The motor may be raised by an electric motor or a crank mechanism, and may be fixed. Further, the bed may be made of various materials such as wood and metal. For example, a bed may be formed of a metal round pipe or square pipe for hospital use.

[0031]

According to a first aspect of the present invention, there is provided a body frame having a front headboard and a rear headboard, and a pair of left and right side frames disposed narrower than the front headboard and the rear headboard. In a bed in which a frame and a waist frame are juxtaposed, and the back frame is provided so as to be able to rise through a pivot, a left and right side plate is provided on the inner surface of the pair of left and right side frames at the rear lower end of the back frame. A frame-shaped guide member having a front stopper and a rear stopper is provided, and a swing member in which a main shaft formed in the left and right direction of the main body frame is inserted at a lower portion is arranged in the guide member. The pivot portion is formed on the upper side of the member, and the pivot portion is provided with a substantially rectangular tubular mounting tool so as to be rotatable,
By fixing the upper surface of the attachment to the rear rear surface of the back frame, the back frame is provided on the main body frame so as to be able to rise up via a pivot, and the pivot is provided via a swing member and a main shaft. The bed is provided so as to be able to swing back and forth on the main body frame, so that it is possible to provide a bed that has a simple structure and can prevent the back mattress from pushing the waist mattress when the back frame rises. it can.

Further, according to the invention of claim 2, the waist side frame is provided on the main body frame so as to be slidable in the lateral direction, so that the structure is simplified, and the back side mattress is connected to the waist side mattress when the back side frame is raised. A bed capable of preventing pushing can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a bed in a front-rear direction showing a first embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of a main part of the bed showing the first embodiment of the present invention.

FIG. 3 is a perspective view of a bed showing the first embodiment of the present invention.

FIG. 4 is a left-right longitudinal sectional view of the bed showing the first embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a bed in a front-rear direction showing a second embodiment of the present invention.

FIG. 6 is a sectional view taken along line AA of FIG. 5, showing a second embodiment of the present invention.

FIG. 7 is a longitudinal sectional view of a bed showing a third embodiment of the present invention.

FIG. 8 is an explanatory diagram of an operation on a rear end side of a driving body according to a third embodiment of the present invention.

FIG. 9 is a longitudinal sectional view of a bed in a front-rear direction showing a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body frame 2 Front headboard 2A Rear headboard 3 Side frame 4 Back side frame 5 Waist side frame 9 Guide member 10 Left right side plate 11 Front stopper 12 Rear stopper 13 Swinging member 14 Main shaft 15 Swing shaft (pivot part) 16 Mounting Tool S Slide mechanism

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61G 7/00 A47C 20/04

Claims (2)

(57) [Claims] A front headboard and a rear headboard;
Narrower than the front headboard and rear headboard
Body frame having a pair of left and right side frames
A bed in which a back frame and a waist frame are arranged side by side on a bed, and the back frame is provided so as to be able to rise up via a pivotal support portion.
Left and right side plates and front stopper on the inner surface of the pair of side frames and
A frame-shaped guide member having a rear stopper is provided,
It is long in the left and right direction of the body frame inside this guide member.
Place the swinging member with the main spindle formed at the bottom,
The pivot portion is formed above the rocking member, and the pivot portion is turned around the pivot portion.
A substantially rectangular cylindrical mounting tool is provided movably, and the upper surface of the mounting tool is
By fixing to the rear rear surface of the dorsal frame,
The back frame can be lifted up via a support.
The pivot portion is provided on a body frame and the pivot
A bed characterized in that it can be pivoted back and forth on a main body frame via a main shaft . 2. The bed according to claim 1, wherein a waist side frame is slidably provided in the main body frame in a lateral direction.