WO2008050485A1

WO2008050485A1 - Sliding bed

Info

Publication number: WO2008050485A1
Application number: PCT/JP2007/001162
Authority: WO
Inventors: Hirofumi Kajita
Original assignee: Hohryo Co., Ltd.
Priority date: 2006-10-26
Filing date: 2007-10-24
Publication date: 2008-05-02
Also published as: JP2008131961A

Abstract

A sliding bed that imposes a less burden to a carer and that can be easily moved even by a cared person such as a patient, a physically handicapped, or an aged who has difficulty in standing up. The sliding bed (1) has a bed body frame (2), a foot side frame (3) fixed to one end in the longitudinal direction of the bed body frame (2), a head side frame (6) having a seat frame (4) placed contiguous to one end of the foot side frame (3) and also having a back side frame (5) provided contiguous to the seat frame (4) in a rotatable manner, and slide means for moving the seat frame (4) in the width direction of the body frame (2). The seat frame (4) has a seat body frame (4a) and a frame (4b) for movement detachably attached to the seat body frame (4) and held by a carriage (9) having wheels under it.

Description

Specification

Sliding bed

Technical field

[0001] The present invention relates to a sliding bed particularly suitable for sick persons, disabled persons, elderly people, etc., and used in homes, hospitals, facilities and the like.

Background art

[0002] Conventionally, it has various mechanisms for facilitating waking up of sick people, disabled people, elderly people, etc. (hereinafter referred to as "caregivers"), and for reducing the burden on caregivers. Beds are being developed. The present inventor has already developed a sliding-type bed that has a simple structure, is excellent in productivity and usability, and can be used in any place such as a home, and is disclosed in Patent Document 1. .

[0003] By using the slide-type bed disclosed in Patent Document 1, it is possible to reduce the burden and improve safety during daily operations such as sleeping and rising operations of the care recipient. It is possible to reduce the burden on caregivers.

[0004] In addition, in the movement from a bed to a wheelchair, in Patent Document 1, the slide portion of the slide-type bed is slid in the width direction of the bed, and the care recipient is asked to slide the bed. Raise the hand to the side table that is detachably attached to the frame, and during this time, the caregiver puts the slide in the original position and pushes out the wheelchair, so that the cared person sits in the wheelchair as it is. It is possible to make it.

[0005] Patent Document 1: Japanese Patent No. 3 7 9 6 700

Disclosure of the invention

Problems to be solved by the invention

[0006] As described above, in the movement from the bed to the wheelchair, in Patent Document 1, the caregiver can sit on the wheelchair without changing the direction of the cared person's body. Compared to a bed, it is possible to reduce the burden on the caregiver. However, in the case of a cared person who is difficult to stand up, the carer needs to hold the cared person or change the direction of the body as before. Therefore, the burden on caregivers is large.

Accordingly, the present invention has an object to provide a sliding bed that can be easily moved even by a care recipient such as a sick person, a disabled person, an elderly person, etc., whose burden on a caregiver is small and difficult to stand up. To do.

Means for solving the problem

[0007] The slide type bed of the present invention includes a bed main body frame, a foot side frame fixed to one end side in the length direction of the bed main body frame, and one end portion of the foot side frame. A head frame having an adjacent seat frame and a back frame rotatably connected to the seat frame, and a slide that moves the seat frame in the width direction of the bed main body frame. A head-side frame, a head-side main body frame, and a moving frame that is detachably attached to the head-side main body frame and is held by a carriage having wheels below. It is characterized by having.

[0008] The head side frame is slid in the width direction of the bed main body so that the moving frame protrudes from the bed main body frame. If the moving frame is separated from the head-side main body frame, the moving frame and the carriage holding the moving frame are separated from the sliding bed and can be moved independently. Fulfill. In other words, even a care recipient such as a sick person, a disabled person, or an elderly person who has difficulty standing up can sit on a moving frame without changing to a dedicated wheelchair with the assistance of a caregiver. It is possible to move freely away from the bed. In addition, the caregiver does not need to hold the cared person or change the orientation of the cared person, slide the head side frame with the cared person sitting, and move the moving frame to the head side. It only needs to be separated from the body frame, and the burden on the caregiver can be reduced to the utmost limit.

[0009] Further, the sliding means of the slide type bed according to the present invention includes a sliding guide installed on the floor surface and a carriage, and is a sliding capable of sliding the sliding guide. It is desirable that the support base having a member and

[0010] With the above configuration, a slide-type bed that is simple in structure and easy to operate can be obtained. [001 1] In addition, the sliding bed of the present invention includes a bed main body frame, a foot side frame provided on one end side in the length direction of the bed main body frame, and one end of the foot side frame. A head frame having a seat frame disposed adjacent to the seat portion and a back frame rotatably connected to the seat frame, and a slide that moves the foot frame in the width direction of the bed body frame. A head-side frame comprising: a head-side main body frame; and a moving frame that is detachably attached to the head-side main body frame and is held by a carriage having wheels below. It is characterized by that.

[0012] The foot side frame is slid in the width direction of the bed main body frame, that is, in the head side main body frame side. Then, the surface on the foot side of the moving frame is exposed. Here, if the moving frame is separated from the head-side main body frame, the moving frame and the carriage holding the moving frame are separated from the sliding bed and can be moved independently by moving forward. This plays the role of a wheelchair. In other words, even a care recipient such as a sick person, a disabled person or an elderly person who has difficulty standing up can sit on a moving frame without changing to a dedicated wheelchair with the assistance of a caregiver. It is possible to move freely away from the platform. Also, the caregiver does not need to hold the cared person or change the direction of the body, slide the foot side frame with the cared person sitting, and move the moving frame to the head side. It is only necessary to separate it from the body frame, and the burden on the caregiver can be reduced to the utmost limit.

The invention's effect

[0013] According to the present invention, according to the above configuration, the head-side frame is slid in the width direction of the bed main body so that the moving frame protrudes from the bed main body frame, or the foot-side frame is Slide the head-side main body frame to expose the foot-side surface of the moving frame and separate the moving frame from the head-side frame. The carriage that holds the frame is separated from the sliding bed and can be moved alone, and this acts as a wheelchair, so the burden on the caregiver is small and it is difficult for the sick, disabled, elderly, etc. A sliding bed that can be easily moved by a caregiver can do.

Brief Description of Drawings

FIG. 1 is a perspective view of a sliding-type bed in Embodiment 1 of the present invention.

FIG. 2 is a side view showing a configuration of a carriage, a support base and a sliding guide.

[Fig. 3] Fig. 3 is a diagram showing an operation mode of the sliding-type bed in the first embodiment.

FIG. 4 is a perspective view of an auxiliary wheel of a slide type bed according to the first embodiment.

FIG. 5 is a view showing a state where a wheelchair part is separated.

FIG. 6 is a diagram showing an operation mode of the sliding-type bed in the second embodiment of the present invention.

FIG. 7B is a cross-sectional view of the main part showing the sliding means for moving the foot side frame in the width direction of the bed main body frame.

FIG. 7B is a side view of the main part showing the sliding means for moving the foot side frame in the width direction of the bed main body frame.

Explanation of symbols

1 '4 0 Slide type bed

2 Bed body frame

2 a leg

2 b casters

2 c custom

2d safe

2 e shelf

3 foot side frame

4 Seat frame

4 a Seat frame

4 b Moving frame

5 Back frame

5 a Back body frame b Moving frame c Grip part

Head side frame rotating means

a Horizontal δ or

b Engagement means

Connecting member

Trolley

a Dolly body b Moving dolly c Casters d Handrail

0 Slide guide

1 Support base

1 a Sliding member

1 b, 1 1 c inclined surface

1 d Groove

2 Anti-slip device

2 a Slide lock

2 b Engagement tool

2 c Knob section

3 Table board

3a Sly Guy Guy

4 Auxiliary wheel

4 a Handle b Spindle

c Single wheel

d Plug part 1 4 e

2 0 mattress

2 0 a Holder

3 0 Wheelchair

4 1 Sliding means

4 2 Roller frame

4 3 Roller rail

4 4 Support roller

4 5 Roller

4 6 trolley

4 6 a casters

5 0 Wheelchair

BEST MODE FOR CARRYING OUT THE INVENTION

[001 6] (Embodiment 1)

Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a slide-type bed according to Embodiment 1 of the present invention.

[001 7] As shown in FIG. 1, the sliding-type bed 1 according to the first embodiment is fixed to the bed main body frame 2 and one end side in the length direction of the bed main body frame 2. A head side frame having a foot frame 3, a seat frame 4 disposed adjacent to one end of the foot frame 3, and a back frame 5 rotatably connected to the seat frame 4. And 6. A mattress 20 is disposed on each frame, and is held by a holder 20 a erected on the outer peripheral edge of the bed main body frame 2.

[0018] Each of the bed main body frames 2 is provided with leg portions 2a at four force points along the longitudinal direction. A caster 2 b with a stopper is provided at the lower end of the leg 2 a so that the sliding bed 1 can move freely. Also, a fence 2c is provided at the end of the bed main body frame 2 on the head side in the longitudinal direction, and a shelf 2e with a safe 2d is provided at the end on the foot side. Yes. [001 9] The seat frame 4 and the back frame 5 are connected by a rotating means 7. The rotating means 7 includes a horizontal member 7a disposed in the width direction of the bed main body frame 2 at a predetermined interval between the seat frame 4 and the back frame 5, and the seat frame 4 and It is composed of a horizontal member 7a and an engaging means 7b for connecting the back frame 5 to each other, and functions as a reclining mechanism capable of temporarily fixing the back frame 5 at an arbitrary inclination angle. The rotating means 7 can be moved manually, but it can also be moved electrically by providing drive means such as an electric cylinder or hydraulic cylinder.

The head-side frame 6 includes a head-side main body frame and a moving frame, and is detachably connected by a connecting member 8. That is, the seat frame 4 is composed of a seat body frame 4a and a moving frame 4b, and the back frame 5 is composed of a back body frame 5a and a moving frame 5b. By connecting the back main body frame 5a, the moving frame 5b, and the force connecting member 8, the seat main body frame 4a and the moving frame 4b, and the back main body frame 5a and the moving frame 5b Are integrated with each other. The connecting member 8 is provided so as to be rotatable around the connecting portion between the seat frame 4 and the back frame 5, and also serves as an armrest when the moving frames 4b and 5b function as a wheelchair. (See Fig. 5.) The moving frame 5b of the back frame 5 is provided with a U-shaped gripping portion 5c in a plan view so that a caregiver can easily operate the moving frames 4b and 5b as a wheelchair. The wheelchair can be moved.

[0021] The seat frame 4 is held by a rectangular cart 9. The carriage 9 includes a carriage main body 9a and a moving carriage 9b, and the carriage main body 9a and the moving carriage 9b are detachably connected by engagement means (not shown). Casters 9c are provided at the lower four corners of the moving carriage 9b, and the moving carriage 9b is separated from the carriage body 9a to be a wheelchair 30 described later (see FIG. 5). Acts as a wheel when functioning. In addition, the moving carriage 9 b is provided with a handrail portion 9 d for removal. This handrail 9d is equipped with a sliding-type bed. When used as a door 1, it functions as a handrail, and when the moving carriage 9b functions as a wheelchair 30, it functions as an armrest.

[0022] The carriage 9 is a support base 1 that can slide a sliding guide 10 placed on the floor.

1 is installed. Here, the configurations of the carriage 9, the support base 11, and the slide guide 10 will be described in detail. FIG. 2 is a side view showing the configuration of the carriage 9 and the support base 11 and the sliding guide 10.

The guide for slide 10 is a guide member having a convex central portion, and two guide members are installed in parallel across the width direction of the slide type bed 1.

The support base 1 1 has a substantially trapezoidal cross section, and the inclined surfaces 1 1 b and 1 1 c are respectively separated from the support base 1 1 when the moving carriage 9 b functions as a wheelchair 30. It has a gentle slope that makes it easy to move up and down. Below the support base 11, there is provided a sliding member 11 a formed so as to sandwich the convex shape of the sliding guide 10. This sliding member 1 1 a slides in the width direction of the sliding bed 1 along the convex shape of the sliding guide 10, so that it is held by the support base 1 1, the carriage 9 and the carriage 9. The seat frame can be moved in the width direction of the four-force slide-type bed 1.

[0024] At the position on the upper surface of the support base 1 1 and below the carriage 9b, the groove 1

1 d is formed. The groove 11 1 d is formed by inserting the caster 9 c into the movable cart 9 b when the caster 9 c provided on the lower portion of the movable cart 9 b is mounted on the support platform 11 1. It has a function as a fixing means for fixing to the support base 1 1.

[0025] An auxiliary sliding means (not shown) is formed between the foot side frame 3 and the seat frame 4 by a roller, a rail and the like, and moves the seat frame 4 in the width direction of the bed body frame 2. )) Is provided. An anti-sliding device 12 is provided at a position between the foot side frame 3 and the seat frame 4 and on the moving side. The anti-sliding device 1 2 includes a slide locking device 1 2 a disposed on the foot frame 3 side, one end passing through the slide locking device 1 2 a, and the other end seated. Engagement tools 1 2 b engaged with the side portions of the frame 4 so as to be engageable with each other, and hooks protruding from one end portions of the engagement tools 1 2 b. It is comprised by the mami part 1 2 c.

The foot side frame 3 is provided with a detachable table plate 13 on the surface on the side where the seat frame 4 protrudes in the width direction of the slide type bed 1. The table plate 13 is slidable along a sliding guide 13 a provided on the foot side frame 3, and is approximately 18 around the connecting portion with the sliding guide 13 a. It can be rotated 0 degrees.

Next, the operation mode of the sliding bed 1 in the first embodiment will be described. FIG. 3 is a diagram showing an operation mode of the slide-type bed 1 in the first embodiment. FIG. 4 is a perspective view of the auxiliary wheel of the slide-type bed 1 according to the first embodiment. FIG. 5 is a view showing a state where the wheelchair 30 is separated.

[0028] When the seat frame 4 of the slide-type bed 1 is moved to the side of the bed body frame 2, the back frame 5 is first moved by moving the rotating means 7. Raise the wheelchair 30 back. Then, hold the knob portion 1 2 c of the anti-sliding device 1 2 and remove the engaging device 1 2 b from the seat frame 4. Next, the seat frame 4 is pulled out in the movement direction X of the side portion of the bed main body frame 2. Then, the sliding member 1 1 a of the support base 1 1 slides in the width direction of the sliding type bed 1 along the convex shape of the sliding guide 10, and as shown in FIG. It moves in the width direction of the head-side frame 6-force slide type bed 1 held by the support base 1 1 and the carriage 9 and the carriage 9. At this time, the rollers and rails of auxiliary sliding means (not shown) provided between the foot side frame 3 and the seat frame 4 assist the sliding of the support base 11, The side frame 6 can be prevented from rattling and can be moved smoothly. When the head-side frame 6 is pulled out to a predetermined position, sliding of the support base 11 is stopped by a stagger (not shown) provided on the sliding member 11 a.

[0029] Next, the connecting member 8 that connects the back body frame 5a and the moving frame 5b is rotated to release the connection between the back body frame 5a and the moving frame 5b. Move the wheelchair 30 as shown in 5 to the position where it will be an armrest. This As a result, as shown in FIG. 5, the moving frame 5b of the back frame 5 is separated from the back main body frame 5a, and the moving frame 4b of the moving carriage 9b and the seat frame 4 and the back frame 5 A car chair 30 is constituted by the moving frame 5 b.

[0030] When the moving carriage 9b is moved forward (arrow A in FIG. 5) and the caster 9c is escaped from the groove portion 1 1d of the support base 1 1, the carriage main body 9a and the moving carriage 9b The engagement means is released and the connection is released, and the moving carriage 9 b and the moving frames 4 b and 5 b can be freely moved as the wheelchair 30. When the caregiver assists the movement of the wheelchair 30, the caregiver pushes the gripping part 5c provided on the moving frame 5b of the back frame 5 and pushes it out or pulls it out to the front. The caster 9 c of the carriage 9 b can be escaped from the groove 1 1 d of the support base 1 1. By using the inclined surface 1 1 b or 1 1 c of the support base 1 1 to lower the moving carriage 9 b to the floor, it can be used in the same way as a normal wheelchair.

[0031] As the sliding bed 1 in the first embodiment, an auxiliary wheel 14 as shown in Fig. 4 can be used. Here, the auxiliary wheels 14 and how to use them will be described.

As shown in Fig. 4, the auxiliary wheel 1 4 has a semicircular handle 1 4 a gripped by the user, and an axle 1 provided on both sides of the lower ends of the support shaft 1 4 b and the support shaft 1 4 b. 4 e It has a structure supported by wheels 14 c fixed to e, and is located at the lower end of the spindle 14 b and between the wheels 14 c, below the moving carriage 9 b. An insertion portion 14 d to be fitted into a provided fitting portion (not shown) is provided. The axle of the wheel 14 c is configured to be interlocked with the steering wheel 14 a operation. A table plate 13 provided on the slide-type bed 1 can be placed on the handle 14 a of the auxiliary wheel 14. Auxiliary wheel 14 can be used alone as a walking aid for a cared person who can walk.

[0032] With the insertion part 1 4d of the auxiliary wheel 1 4 fitted into the fitting part of the moving carriage 9b, If used, the auxiliary wheel 14 can function as a handle when the wheelchair 30 is moved. In addition, with the insertion portion 14 d of the auxiliary wheel 14 inserted into the fitting portion of the moving carriage 9 b, the table plate 13 is slid forward along the sliding guide 13 a. Rotate the lower end of the table plate 1 3 upward while the table plate 1 3 is at the same position as the auxiliary wheel 1 4, and move the table plate 1 3 to the handle 1 4 from above the auxiliary wheel 1 4. By lowering to a, it can function as a table that can be used as a desk for eating and writing. If the table plate 1 3 is detached from the sliding guide 1 3 a of the sliding bed 1 3 a and placed on the top of the handle 14 a, the wheelchair with table 30 will be You can also use the table board 1 3.

[0033] When the slide type bed 1 in the first embodiment is returned to the original position, first, the wheelchair 30 is set to either one of the inclined surfaces 1 1 b and 1 1 c of the support base 1 1. From Support stand 1 1 Raise it up. Then, the wheelchair 30 is fixed on the support base 11 by moving the caster 9 c of the moving carriage 9 b until it falls into the groove 11 1 d of the support base 11. When the caster 9c falls into the groove 11 1d, the engaging means of the carriage main body 9a and the moving carriage 9b are engaged and connected. Then, by rotating the connecting member 8 to return it to the original position, the back main body frame 5a and the moving frame 5b are connected, and the head side main body frame and the moving frame are integrated.

Then, the sliding member 1 1 a of the support base 1 1 is slid in the width direction of the sliding type bed 1 along the convex shape of the sliding guide 10, so that the head side Push frame 6 back in the moving direction Y and place it in the bed frame 2. Finally, hold the grip portion 1 2 c of the anti-slip device 1 2, engage the engaging device 1 2 b with the seat frame 4, and connect the seat frame 4 and the foot side frame 3. As a result, the seat frame 4 is accommodated in the bed main body frame 2, and the slide type bed 1 can be used in the same manner as a normal bed.

[0035] As described above, in the operation of the slide type bed 1 in the first embodiment, all the operations can be performed manually, but driving means such as a motor is provided. This can be done electrically. In this case, conventionally known methods can be used for attaching the driving means, and a remote controller or the like can also be used. In addition, when the wheelchair 30 is moved, a driving means such as a motor is provided in the moving carriage 9b, and a pedal such as an accelerator or a brake that is linked to the driving means is attached so that the cared person can take care of the caregiver. It is also possible to move freely without assistance.

As described above, the first embodiment has been described in detail, but the sliding bed of the present invention is not limited to the above-described embodiment. For example, as a sliding means for sliding the head side frame 6 in the width direction of the bed main body frame 2, a sliding guide 10 and a support base 1 1 installed on the floor surface are used. Not limited to this, any means can be used as long as the carriage 9 and the head-side frame 6 placed on the support base 11 can be pulled out in the width direction of the bed main body frame 2. May be. Alternatively, the head side frame 6 may be moved leftward when viewed from the head side of the sliding bed 1. In this case, the right side of the head-side frame 6 is composed of a seat body frame 4a and a back body frame 5a, and the left side is composed of moving frames 4b and 5b that serve as a chair 30.

[0037] (Embodiment 2)

Next, Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 6 is a diagram showing an operation mode of the sliding-type bed in the second embodiment of the present invention. FIG. 7A is a cross-sectional view of the main part showing a sliding means for moving the foot side frame in the width direction of the bed body frame, and FIG. 7B is a side view of the main part. In the second embodiment, components having the same configuration and the same operation as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted. Further, the anti-sliding device 12 and the knob portion 1 2 c which will be described later are not shown in FIG. 6, so refer to FIG.

[0038] As shown in FIG. 6, in the slide type bed 40 according to the second embodiment, the foot side frame 3 is moved in the width direction of the bed main body frame 2 by the sliding means 41. However, the configuration is almost the same for the other points. It has become. In the second embodiment, since the foot side frame 3 slides, only the moving frame 4 b side of the seat frame 4 is held by the carriage 46, and the seat body frame 4 a is the bed. The main body frame 2 is joined together.

As shown in FIG. 7A and FIG. 7B, the sliding means 41 for sliding the foot side frame 3 in the width direction of the bed main body frame 2 is the side of the foot side frame 3 on the seat frame 4 side. Roller frame 42 formed on the roller section, roller rail 4 3 formed on the roller frame 42, and a shaft of the seat main body frame 4a rotatably mounted below the roller frame 42. A support roller 4 4 that abuts and supports the lower surface, and a roller 4 that is rotatably supported at one end of the side surface on the foot side frame 3 side of the seat body frame 4 a and attached to the roller rail 4 3 And 5.

[0040] When using the slide type bed 1 by moving the foot side frame 3 to the side of the bed body frame 2, first, the back frame 5 is caused by moving the rotating means 7, The backrest part. Then, hold the knob portion 1 2 c (see FIG. 1) of the anti-sliding device 1 2 and remove the engaging tool 1 2 b (see FIG. 1) from the seat frame 4. Next, when the foot side frame 3 is pushed in the moving direction Y of the side of the bed body frame 2, the roller 4 5 and the support roller 4 4 of the sliding means 4 1 are moved to the roller rail 4 3 and the seat body frame 4 a. The foot side frame 3 moves to the side of the bed body frame 2 by rotating on the bottom surface. As shown in FIG. 6, in the foot side frame 3, the side surface on the rear side with respect to the moving direction Y moves to the position of the seat body frame 4a of the seat frame 4.

[0041] When the foot side frame 3 moves to the above-mentioned position, the surface on the foot side of the moving frame 4 b of the seat frame 4, that is, the dolly 4 6, the moving frame 4 b of the seat frame 4 In addition, the front side of the wheelchair 50 constituted by the moving frame 5b of the back frame 5 is in a released state. Here, the connecting member 8 that connects the back main body frame 5 a and the moving frame 5 b is rotated to release the connection between the back main body frame 5 a and the moving frame 5 b, and 4 6 If you release the stopper of a, the wheelchair 5 0 will start from the sliding bed 4 0 It can be separated and moved forward. To return the sliding bed 40 to its original state, the reverse of the above procedure is recommended.

[0042] In the second embodiment, the foot side frame 3 moves to the left as viewed from the head side of the slide-type bed 40. However, the present invention is not limited to this. It may move. In this case, the right side of the head-side frame 6 is composed of a seat body frame 4a and a back body frame 5a, and the left side is composed of moving frames 4b and 5b serving as a wheelchair 50.

Industrial applicability

[0043] The present invention can be used as a slide-type bed used in homes, hospitals, facilities, etc., and particularly, there are sick persons, disabled persons, elderly people, etc. who have little burden on caregivers and are difficult to stand up. However, it can be suitably used as a sliding bed that can be easily moved.

Claims

The scope of the claims

[1] A bed main body frame, a foot side frame fixed to one end side in the length direction of the bed main body frame, and a seat frame arranged adjacent to one end portion of the foot side frame And a head-side frame having a back frame rotatably connected to the seat frame, and a sliding means for moving the seat frame in the width direction of the bed main body frame,

The head-side frame includes a head-type main body frame and a moving frame that is detachably attached to the head-side main body frame and is held by a carriage having wheels below. .

[2] The sliding means includes a slide guide installed on a floor surface, and a support base that includes the carriage and includes a sliding member that can slide the slide guide. A sliding bed as claimed in claim 1.

[3] A bed main body frame, a foot side frame provided on one end side in a length direction of the bed main body frame, and a seat frame disposed adjacent to one end portion of the foot side frame. And a head-side frame having a back frame rotatably connected to the seat frame, and sliding means for moving the foot-side frame in the width direction of the bed main body frame,