JPH09327355A - Fence body installing structure of bed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid arms from being pinched between a back part floor and a fence body as a result of a postural change of the back part floor to a rising-up posture when the fence body is used while preventing an installing part of the fence body from projecting to both lateral sides of the back part floor when the fence body is not used. SOLUTION: This bed is provided with a driving mechanism to change a posture of a back part floor 5 of the bed to a horizontal directional falling-down posture and a rising-up posture rising up by a preset angle to this falling-down posture, and is constituted so that a fence body 27 is arranged on the lateral side of the back part floor 5. In this case, an installing part 30 to install the fence body 27 is provided on the back part floor 5, and the installing part 30 is constituted so that the installing part 30 does not project outward more than the lateral side of the back part floor 5 in an uninstalled condition of the fence body 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a drive mechanism for changing the back floor of a bed between a horizontal laid posture and an undulated posture in which the horizontal laid posture is undulated by a set angle. The present invention relates to a structure for mounting a fence on a bed in which a fence is provided on the side of the.

[0002]

2. Description of the Related Art A patient lying on a bed falls from the bed to the floor by inserting the fences into holes formed in a pair of left and right frames of the bed and arranging them on both sides of the back floor. I try not to be. Then, the fence body is formed by bending a plurality of pipe members, assembling them in a mesh shape, and fixing them by welding.

[0003] According to the above configuration, by forming the fence body in a mesh shape, it is possible to confirm the appearance of the complexion of a patient sleeping on the bed through a gap between the pipes formed in a mesh shape. ing. By the way, depending on the patient, by changing the posture of the back floor to an undulating posture with a set angle, it is possible to raise the upper body and take a medical examination and eat, but there is a gap between the pipes of the fence body. Therefore, the arm may be inserted into the gap. In this state, if the posture of the back floor is changed to the up and down posture, the arms remain between the fence and the back floor because the fence remains inserted into the frame despite the posture change of the back floor. Sometimes they got caught and injured.

In order to solve the above problems, the attachment portions are extended to both lateral sides of the back floor, and the fence is attached to the attachment portions.
It is conceivable to move the fence integrally with the back floor, but even if the fence is not attached to the attachment part, the attachment parts protrude to both sides of the back floor, which increases the width of the bed. I will end up. Therefore, especially when arranging a large number of beds in a patient room, the size of the fences extended to both lateral sides of the back floor increases by a large number of beds, so that the patient room becomes very narrow,
There was room for improvement.

[0005]

SUMMARY OF THE INVENTION In view of the above-mentioned situation, the present invention is to solve the problem that when the fence is not used, the attachments of the fence protrude to both sides of the back floor. However, when using the fence, it is possible to prevent the arm from being pinched between the back floor and the fence when the posture of the back floor is changed to the up and down posture. .

[0006]

In order to solve the above-mentioned problems, the present invention is a drive for changing the posture of the back floor of a bed between a horizontal laid posture and a laid posture in which a set angle is undulated with respect to the laid posture. In a bed in which a mechanism is provided and a fence is provided on the side of the back floor, the back floor is provided with an attachment portion for attaching the fence body, and the attachment portion is the back floor when the fence body is not attached. The mounting portion is configured so as not to project outward than the lateral side of. Therefore, when the posture of the back floor is changed to the undulating posture with the set angle undulating, the mounting portion moves integrally with the back floor, and the mounting portion is always located at a predetermined position on the side of the back floor. And, in the non-attached state of the fence, since the attachment portion does not project outward than the lateral side of the back floor,
When getting off from the bed, not only the attachment part of the fence does not get in the way, but it also does not get in the way when the caregiver lends a hand, and it is easy to care for the patient.

[0007] The mounting portion is configured so that the legs of the fence are inserted from above, and the fence is attached to the mounting portion outside the lateral side of the back floor in a mounting state. Because the mounting portion is attached to the back floor so that the mounting position can be freely changed to the use position protruding to the back and the storage position where the mounting portion is retracted inward from the lateral side of the back floor when the fence is not attached. When attaching the fence to the attachment part, after changing the attachment part to the use position, insert the leg of the fence body into the attachment part from above to complete the attachment of the fence body and attach the fence body. If not, by changing the position of the mounting portion to the retracted position, the mounting portion does not project outside the side of the back floor and get in the way when getting off the bed.

The leg portion of the fence is provided with a horizontal portion parallel to the horizontal direction at the lower end thereof, and the mounting portion is configured so that the horizontal portion of the leg portion is inserted from the horizontal direction to be mounted, and the fence is provided. There is provided fixing means capable of releasing the fixation for fixing the leg portion to the mounting portion when the leg portion of the body is inserted into the mounting portion. By making the insertion direction of the leg portion of the fence body into the attachment portion horizontal, it is possible to insert the leg portion of the fence body into the attachment portion even if the attachment portion does not project to the side of the back floor. Of. Therefore, the mounting part itself does not project to the side of the back floor even when using the fence, and only the fence can project to the side of the back floor. Compared to the one that projects the mounting part to the side of the floor, it can suppress the increase in the lateral width of the bed, and since the mounting part originally did not project to the side of the back floor, it was inserted. All you have to do is remove the legs of the fence from the attachment. Further, since the lower end portion of the leg portion of the fence body can be inserted from the horizontal direction and then fixed by the fixing means, the fence body does not come off from the attachment portion.

[0009]

1 and 2, there is shown an electric lifting type bed, which includes a leg base unit 1 constituting a lower portion and a floor portion raising / lowering unit provided in the leg base unit 1. First electric motor 3 for driving the link mechanism 2 for vehicle
And a second electric motor 8 as a drive mechanism for changing the posture of the back floor 5 of the floor 4 to a horizontal laid posture and a laid posture in which the laid posture is undulated by a set angle, and an outer side forming an outer frame. The frame 9 and the floor portion 4 for receiving bedding and the like are configured as main members.

The floor 4 comprises a back floor 5 located on the front side of the bed, a waist floor 6 located immediately behind it, and a leg floor 7 located immediately behind it. . The waist floor 6 and the leg floor 7 are pivotally connected to each other at their ends facing each other.

The leg base unit 1 has a rectangular flat surface 4
The outer frame is formed by connecting and fixing the ends of the pair of front and rear first frames (not shown) and the pair of left and right second frames 12, 12 to the downward opening type boss portion 10 arranged at one corner by welding. And the link mechanism 2 is formed on this outer frame.
In addition to mounting, leg seats 13 are respectively fitted in the four boss portions 10 from below.

The link mechanism 2 includes the second frame 1
Of the four swinging arms 15 ... Attached to the four brackets 14 fixed to the inside of 2, 12 so as to be swingable around the horizontal axis X, and these swinging arms 15 ... Connecting pipes 16, 16 for connecting the swinging arms 15, 15 to the left and right of the connecting pipes 16, 1 and connecting pipes 16, 1 for connecting the front and rear connecting pipes 16, 16 to each other.
6 is composed of brackets 17 fixed to the middle portion of 6, and a push-pull rod 18 pivotally connected to the brackets 17.

Support members 20 and 20 (only one of which is shown in the figure) having a substantially U-shaped cross section are fixedly mounted on a pair of front and rear support pipes 19 and 19 which are provided between the inner surfaces of the outer frame 9. The motor bodies of the electric motors 3 and 8 are pivotally connected to the support members 20 and 20, respectively, so that the electric motors 3 and 8 can swing when the electric motors 3 and 8 are driven.

Four support arms 21 ... Are fixedly mounted on the outer frame 9 in a suspended posture, and these support arms 21.
························· from supporting the lower end portion of the connection pipes 16, 16 through the notch portion formed in the
The support arms 21 ... Are locked and fixed to the connecting pipes 16, 16 by the locking portions 22 provided at the lower end of 1. Further, the tip end of the motor shaft 3A of the first electric motor 3 is pivotally connected to a bracket 23 fixed to the lateral side of the longitudinal direction intermediate portion of the push / pull rod 18. Therefore, by driving the first electric motor 3 to extend the motor shaft 3A, the swing arms 15 and 15 are swung around the horizontal axis X, and the floor portion 3 is moved as shown in FIG. It is designed so that it can be raised.

A motor shaft 8A of the electric motor 8 is attached to an arm 26 fixed to a support pipe 25 which is provided on a pair of left and right brackets 24, 24 (only one of which is shown in the figure) attached to the lower surface of the back floor 5. The back floor 5 is connected and driven by operating the electric motor 8 so as to swing around the horizontal axis Y. That is,
The electric motor 8 can swing the back floor 5 from the laid posture in which the upper surface of the back floor 5 is parallel to the horizontal as shown in FIG. 1 to the tilted posture shown in FIG. I am trying.

A fence 27 (only one side is shown in the figure) is provided on each side of the back floor 5 and each side of the leg floor 7, and these four fences 27.・ ・ Is designed to function as a guide to prevent patients sleeping on the bed from falling from the bed.

As shown in FIG. 6, the fences 27 are
An inner hollow annular pipe 27A formed in a substantially rectangular shape,
A pair of vertical pipes 27B arranged vertically in the inner space of the annular pipe 27A, and the annular pipe 27 in a hanging posture from two positions corresponding to the lower side of the vertical pipe 27B.
It is composed of a pair of leg pipes 27C, 27C welded to A, and pins 27D, 27D inserted from the lower end to the lower ends of these leg pipes 27C, 27C. The fence 27 may be formed of a rod or plate member in addition to the hollow pipe, and the concrete configuration of the fence 27 is not limited to these.

The mounting structure of each fence 27 will be described. Since the attachment structures for attaching the fences 27 to the back floor 5 and the leg floor 7 are the same,
Only the case where it is attached to one side of the back floor 5 will be described. FIG.
As shown in FIG. 6, a pair of internally hollow frame members 28, 28 for reinforcement are installed between the inner surfaces of the annular outer frame 5A that constitutes the outer frame of the back floor 5, and these frame members 28, 28 are attached to these frame members 28, 28. The slide pipes 29, 29 (only one of which is shown in the drawing) are slidably fitted therein, and one end of each of the slide pipes 29, 29 is provided with two holes 30A, 30A for inserting the fence 27 on the upper surface. It is welded to the fence holder 30. This fence holder 30 is referred to as a mounting portion for attaching the fence 27. The brackets 32, 32 (only one of which is shown in the figure) welded to the lower surface of the fence holder 30 have holes 28A, 28 formed in the frame members 28, 28.
A (only one is shown in the figure) and slide pipe 2
In order to fix the slide pipes 29, 29 to the frame members 28, 28 by penetrating the holes 29A, 29A (only one of which is shown in the figure) formed in the members 9, 29, they are formed in a substantially U shape. A stopper bar 31 is attached via a shaft bar 33 so as to be swingable around a horizontal axis. The stopper bar 31 has its ends 31A, 31A (only one is shown in the drawing) of the holes 28A, 28A, 29A, 29.
The spring 34 is urged to swing so as to penetrate through A. The nut 35 shown in the figure has holes 32 formed in the brackets 32, 32 with screw portions 33A, 33A (only one shown in the figure) formed at both ends of the shaft bar 33.
A, the hole 36A formed in the mounting piece 36 welded to the stopper bar 31, and the spring 34 are penetrated, and then screwed into the projecting screw portions 33A and 33A, respectively, so that the members are assembled. There is. Further, reference numerals 37 and 37 shown in the drawings are pressing pins for restricting the vertical movement of the slide pipe 29, and after the through holes 28B and 28B formed in the frame members 28 and 28 are penetrated, the split rings 38 and 38 are shown. I am trying to attach it to prevent it from coming off.
Further, 30B shown in the figure is a resin or rubber tubular body fitted in the two holes 30A, 30A.

Therefore, the holes 30A of the fence holder 30 are
After removing the leg pipes 27C and 27C of the fence 27 from 30A, as shown in FIG. 5A, the stopper bar 31 is pushed upward to open the end portions 31A and 31A of the stopper bar 31 into the holes 28A and 28A. , 29A, 29
It is removed from A, the fixation is released, and the fence holder 30 is pushed toward the inside of the bed, that is, in the direction of arrow a to change the position to the storage position shown in FIG. Then, by pulling out the fence holder 30 in this storage position toward the front side, the end portions 31A, 31 of the stopper bar 31 are
A can be automatically inserted into the holes 28A, 28A, 29A, 29A, and the fence holder 30 can be fixed in a use posture (see FIG. 5 (A)) protruding outward from the back floor 5. In this state, the pins 27D and 27D of the fence 27 are
Is inserted into the holes 30A, 30A of the fence holder 30 from above and the fence 27 is set.

7 (a), 8 (b) and 8 (b), the fence holder 30 itself can be rotated around the horizontal axis to be changed to the storage position. More specifically, a pair of fence holder mounting brackets 39, 39 (only one is shown in the figure) are welded to the inner surface of the outer frame 5A of the back floor 5, and the fence holder mounting bracket 39, 39, a pair of vertical pieces 40, 40 (only one of which is shown in the figure) welded to the fence holder 30 is rotatably supported by a screw 41 and a nut (not shown) to be used for the fence. The holder 30 is configured to be rotatable around the first horizontal axis 43. The plate lever 4 is attached to the vertical pieces 40, 40.
4 is swingably supported around a second horizontal axis 45 by a screw 46 and a nut 47, and the plate lever 44 is swingably biased upward by a biasing force of a spring 48. Stopper portions 44A, 44A that penetrate through the long holes 40A, 40A formed in the vertical pieces 40, 40 in the pivotal portion and engage with the notches 39A, 39A formed in the fence holder holder fittings 39, 39. Are integrally formed.

Therefore, the plate lever 44 is pushed down to move from the notches 39A, 39A to the stopper portions 44A, 4A.
By unlocking 4A, the fence holder 30
To be able to rotate downward, and to change the position of the fence holder 30 to the storage position (see FIG. 8B) retracted inward from the lateral width of the outer frame 5A of the back floor 5. I am able to Then, by rotating the fence holder 30 in the storage position upward, the stopper portion 44 is formed in the notches 39A, 39A.
A and 44A are automatically locked, and the fence holder 30 can be fixed to a use position (see FIG. 8A) that projects outward from the lateral width of the outer frame 5A of the back floor 5. I am trying. In this state, the fence holder 3
By inserting the fence 27 into 0, the fence 2
7 is attached.

In FIG. 9 to FIG. 13, a pair of fence holders 51, 51 having different shapes from the fence holder 30 can be rotated to the storage position by rotating them around the vertical axis. . More specifically, the fence holder mounting brackets 49, 49 are provided on the inner surface of the outer frame 5A of the back floor 5.
(Only one is shown in the figure) is welded, and the shaft holders 50, 50 (only one is shown in the figure) having the upper end welded after penetrating the fence holder mounting brackets 49, 49, respectively, Holder for fences made of resin molded products
After inserting 1, 51 respectively, nuts 52, 52 are respectively screwed into the lower end screw parts of the shafts 50, 50 protruding downward, and the fence holders 51, 5
1 is connected by a plate member 53, and one fence body holder 51 is rotated around the shaft body 50, so that the other fence body holder 51 is integrally rotated around the shaft body 50. are doing. On the lower surface of the one fence holder 51, a recess 5 for fitting the plate member 53 in order to fix the fence holder 51 at a use position.
1A and an abutting portion 51B which abuts when the fence holder 51 is rotated to the storage position.
The one bar holder 51 is internally provided with a vertically movable rod-shaped body 54 and a spring 55 for urging the rod-shaped body 54 upward, and one end of the plate member 53 has a rod-shaped body 54. Is attached to the lower end of the via a nut 56.

Therefore, when changing the fence holders 51, 51 to the storage position, first, the plate member 53 is pushed down to lower the recess 51A on the lower surface of the fence holder 51 which is fitted. It removes from, and the fixation with the fence holder 51 is released. By rotating one of the fence holders 51 inwardly of the bed in this released state, the other fence holder 51 is integrally rotated inwardly of the bed. Then, when the fence holder 51 shown by the solid line in FIG. 13 is rotated about 90 degrees from the use position, the plate member 53 abuts on the abutment portion 51B, and the fence holder 51 moves to a position 2 in FIG. It is located at the storage position indicated by the dotted line. Further, when changing the position of the fence holders 51, 51 from the storage position to the use position, one of the fence holders 51 is rotated to the outside of the bed by about 90 degrees, and the fence holder 51 is rotated. After the plate member 53 rides on the slope 51C formed on the lower surface of the
It automatically fits in and fixes one of the fence holders 51 at its use position. The components denoted by the same numbers as those in the figure are the same as those in the above-mentioned configuration, and the description thereof will be omitted.

In FIGS. 14 to 16, the horizontal portion 27 parallel to the horizontal direction is provided at the lower ends of the leg pipes 27C and 27C of the fence 27.
E, 27E to equip the leg pipes 27C, 2
The leg pipe 27 is formed by bending 7C into an L-shape in a side view.
The horizontal portions 27E and 27E of C and 27C are configured to be inserted by being inserted into the fence guide pipes 59 and 59 from the horizontal direction. More specifically, a plate-like fence body guide pipe fitting 58 is welded to the inner surface of the outer frame 5A of the back floor 5, and round holes 58A, 58A are formed at both ends of the fence guide pipe fitting 58. This round hole 58A, 5
Leg pipes 27C, 2 of the fence 27 inserted through 8A
The tubular fence guide pipes 59, 59 for guiding and supporting the horizontal portions 27E, 27E of 7C are welded. The fence 27
The horizontal portions 27E and 27E of the leg pipes 27C and 27C and the horizontal guide portions 27E and 27E of the fence guide pipes 59 and 59, respectively.
The stopper holes 27e and 27e and the stopper guide holes 59A and 59A which are in communication with each other when E is inserted into the fence guide pipes 59 and 59 are formed, and a pair of V-shapes provided on the fence guide pipe mounting bracket 58 are formed. The claw portions 60A, 60A of the mold stoppers 60, 60 are the stopper holes 27e, 27e and the stopper guide holes 59A, 5A.
By entering 9A, the horizontal portions 27E, 27E can be fixed in a state of being inserted into the fence guide pipes 59, 59. The pair of stoppers 6
0 and 60 are rotatably attached to upper portions of both ends of the fence guide pipe attachment fitting 58 by screws 61 and 61, and the stoppers 60 and 60 are connected to each other by a plate-shaped interlocking member 62. A stopper release lever 63 protruding from an elongated hole 58B formed in the fence guide pipe fitting 58 is provided at an intermediate portion of the interlocking member 62, and the stopper release lever 63 is caused to act on the stopper release lever 63 so that the stoppers 60, 60 are The claw portions 60A, 60A are the stopper holes 27e, 27e and the stopper guide hole 5.
A rod-shaped spring 64 for urging the movement is provided on the side of entering 9A and 59A. The stopper release lever 6
3, stoppers 60, 60, stopper holes 27e, 27
e and stopper guide holes 59A, 59A, spring 64,
With the interlocking member 62, the leg pipes 27C, 2 of the fence 27
In the state where the horizontal portions 27E and 27E of 7C are inserted into the fence guide pipes 59 and 59 which are mounting portions, the fixing means 65 that can be fixed and released from the fence guide pipes 59 and 59 is configured.

Therefore, by operating the stopper release lever 63 in the direction of the arrow in FIG. 16 against the urging force of the spring 64, the claw portions 60A, 60 of the stoppers 60, 60.
A is forcibly pulled out from the stopper guide holes 59A, 59A, and in this state, the horizontal portions 27E, 27E at the lower ends of the leg pipes 27C, 27C of the fence 27 are changed to the fence guide pipe 59,
59, and the tips of the horizontal portions 27E and 27E are claw portions 60.
When it is located inward of A and 60A, the hand is released from the stopper release lever 63, and in this state, the horizontal portions 27E and 27E are further connected to the fence body guide pipes 59 and 5.
By being pushed into 9, the claw portions 60A, 60A of the stoppers 60, 60 enter the stopper holes 27e, 27e, and the fence 27 is fixed. When the horizontal portions 27E, 27E at the lower ends of the leg pipes 27C, 27C of the fence 27 are pulled out from the fence guide pipes 59, 59, the stopper release lever 63 is resisted against the biasing force of the spring 64, and FIG.
By operating in the direction of the arrow, the stopper 6
The 0, 60 claws 60A, 60A are connected to the stopper guide hole 5
9A, 59A is forcibly pulled out, and in this state, horizontal portions 27E, 27 at the lower ends of the leg pipes 27C, 27C of the fence 27
E can be pulled out from the fence body guide pipes 59, 59.

FIG. 17 shows a bed on which a fence 27 having a shape different from that of the fence 27 is mounted. An annular pipe 27A that constitutes the fence 27 is curved. Especially,
Formed between the front and rear annular pipes 27A, 27A by forming the end portions of the annular pipes 27A, 27A facing the front and rear fences 27, 27 in an inclined posture that is positioned downward toward the end side. There is an advantage that the user can easily get on and off the bed through the space H.

[0027]

According to the first aspect of the present invention, by providing the fence body on the back floor, the fence body can be integrally moved when the back floor is rockingly operated. The arm is not caught between the back floor and the fence when changing the up and down posture. Moreover, when the fence is not used, the mounting part does not project outward beyond the side of the back floor, so it is possible not only to avoid increasing the width of the bed, but also to get on and off the bed. , It can be easily performed without the mounting portion getting in the way.

According to the second aspect of the present invention, the existing fence can be used by constructing the fence by inserting it from above as in the conventional case, which is advantageous in cost.

According to the third aspect, since the mounting portion itself does not project outward beyond the lateral side of the back floor even when the fence is attached, the lateral width of the bed can be reduced accordingly. Moreover, since the mounting portion is in a fixed state, it is possible to reduce the number of parts as compared with the case where the position of the mounting portion is changed.
Not only can the cost be reduced, but even if a large load is applied to the mounting portion, the mounting portion is less likely to be damaged and can be used satisfactorily for a long period of time.

[Brief description of drawings]

FIG. 1 is a side view of a bed.

FIG. 2 is a side view of the bed showing a state in which the back floor is inclined and the floor is raised.

FIG. 3 is a perspective view showing a first embodiment of the fence holder.

FIG. 4 is an exploded perspective view showing a mounting portion of the fence holder according to the first embodiment.

[FIG. 5] (a) and (b) are cross-sectional views of the main part showing the use posture and the storage posture of the fence holder.

FIG. 6 is a perspective view showing a first embodiment of the fence holder.

FIG. 7 is an exploded perspective view showing a second embodiment of the fence holder.

8 (a) and 8 (b) are cross-sectional views of a main part showing a use posture and a storage posture of the fence holder.

FIG. 9 is a perspective view showing a third embodiment of the fence holder.

FIG. 10 is a sectional view showing a mounting portion of a fence holder according to a third embodiment.

FIG. 11 is an exploded perspective view showing a mounting portion of a fence holder according to a third embodiment.

FIG. 12 is a perspective view of a main part showing a third embodiment of the back surface of the fence holder.

FIG. 13 is a schematic plan view showing the use posture and the storage posture of the fence holder.

FIG. 14 is a perspective view showing a fourth embodiment of the fence holder.

FIG. 15 is an exploded perspective view showing a mounting portion of a fence holder according to a fourth embodiment.

FIG. 16 is a cross-sectional view showing the back surface side of the attachment portion of the fence holder according to the fourth embodiment.

FIG. 17 is a side view of a bed showing another embodiment of the fence.

[Explanation of symbols]

 1 leg base unit 2 link mechanism 3 first electric motor 3A motor shaft 4 floor 5 back floor 5A outer frame 6 waist floor 7 leg floor 8 second electric motor (drive mechanism) 8A motor shaft 9 outer frame 10 boss 12 Second frame 13 Leg seat 14 Bracket 15 Swing arm 16 Connecting pipe 17 Bracket 18 Push-pull rod 19 Support pipe 20 Support member 21 Support arm 22 Locking part 23 Bracket 24 Bracket 25 Support pipe 26 Arm 27 Fence 27A Annular pipe 27B Vertical pipe 27C Leg pipe 27D Pin 27E Horizontal part 27e Stopper hole 28 Frame material 28A hole 28B Through hole 29 Slide pipe 29A hole 30 Fence holder (mounting part) 30A hole 30B Cylindrical body 31 Stopper bar 31A End part 32 Bracket 32A hole 33 Shaft bar 33A Screw part 34 Spring 35 Nut 36 Mounting piece 36A hole 37 Holding pin 38 Split ring 39 Fence holder mounting bracket 39 A Notch 40 Vertical piece 40A Long hole 41 Screw 43 1st horizontal axis core 44 Plate lever 44A Stopper part 45 2nd horizontal axis core 46 Screw 47 Nut 48 Spring 49 Fence holder mounting bracket 50 Shaft body 51 Fence holder (Mounting part) 51A Recess 51B Contact part 51C Slope 52 Nut 53 Plate member 54 Rod 55 Spring 56 Nut 57 Bar holder 58 Bar guide pipe mounting bracket 58A Round hole 58B Long hole 59 Guide pipe (mounting part) 59A Stopper guide hole 60 Stopper 60A Claw 61 Screw 62 Interlocking member 63 Stopper release lever 64 Spring 65 Fixing means a Arrow C Caster H Space X Horizontal axis Y Y Horizontal axis

Claims (3)

[Claims] 1. A drive mechanism for changing the posture of the back floor of the bed to a horizontal laid posture and a laid posture in which the set posture is undulated with respect to the laid posture, and a fence is provided on the lateral side of the back floor. In a certain bed, an attachment portion for attaching the fence is provided on the back floor, and the attachment portion does not project outward beyond the lateral side of the back floor when the fence is not attached. A structure for mounting a fence on the bed that constitutes the mounting part. 2. The mounting portion is configured so that the leg portion of the fence is inserted from above and is mounted, and the mounting portion is attached to the mounting portion more than the lateral side of the back floor in a mounting state. Attach the mounting portion to the back floor so that it can be repositioned to the use position protruding outward and the storage position where the mounting portion is retracted inward from the lateral side of the back floor when the fence is not attached. The fence mounting structure for a bed according to claim 1. 3. The lower end of the leg portion of the fence is provided with a horizontal portion parallel to the horizontal direction, and the mounting portion is configured so that the horizontal portion of the leg portion is inserted from the horizontal direction and mounted. 2. The bed body mounting structure for a bed according to claim 1, further comprising fixing means capable of releasing the fixation of the leg portion of the fence body in a state where the leg portion is inserted into the attachment portion.