JP3218370B2 - Backrest device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper body such as an elderly person or a disabled person who has a physical and mental disorder and is bedridden.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backrest device which can be easily supported in a posture necessary for a care work in a backward bending direction from the inside to the outside of a bed.

[0002]

2. Description of the Related Art In recent years, as the society ages, the number of elderly people living at home has increased. Most of these elderly people are bedridden due to physical and mental disabilities, and bedridden elderly people who live at home or those with disabilities are more likely to be cared for at home than at nursing homes or hospitals. Providing services is desirable for maintaining and improving the independence and sociality of the person, and home-based care services are regarded as important. The establishment of a system to provide this home care service is being promoted in various places, and caregivers belonging to various organizations and volunteer groups etc. regularly visit the home instead of the home, for example, bathing care, body cleaning We provide nursing care services such as haircut and hair washing. For example, when performing care work such as haircut for a bedridden elderly person or a care recipient such as a disabled person, bring the wheelchair to a position near the bed, and the caregiver holds the caregiver in the wheelchair. The hair care work is performed in a state where the care receiver is seated and assisted so that the care receiver does not fall off the seat plate, and the care receiver is returned to the bed again after the haircut work is completed.

[0003]

However, the task of embracing a bedridden caregiver and transferring it from a bed to a wheelchair, or vice versa, is heavy work, and a heavy burden on women and girls. Therefore, there is a drawback that a plurality of assistants are required and labor costs are likely to be expensive. In addition, when the care receiver is seated in a wheelchair, the care receiver's head is slightly bent back to the rear side, or it is difficult to take a working posture in which the care receiver is tilted substantially horizontally, and care for haircuts, hair washing, and the like is difficult. It takes time to work. Further, the wheelchair to be used has a high manufacturing cost, and there is a problem in that the stability when the cared person is seated is lacking.

The present invention has been made in view of the above-mentioned conventional problems. One object of the present invention is to dispose a swing shaft at the outer edge of a bed frame and move the swing shaft from the inside to the outside of the bed. The backrest can be set at a bending angle, and there is no need to lift the cared person on the bed or support it to maintain posture, and change the orientation of the cared person on the bed. An object of the present invention is to provide a backrest device that can easily support a care receiver in a working posture required for nursing work simply by applying the upper body to the backrest. Another object of the present invention is to provide a nursing care device for bedridden caregivers on a bed while carrying the device alone and mounting it on a bed frame, while the structure of the entire device is simple, lightweight and excellent in transportability. An object of the present invention is to provide a backrest device that can be easily supported by a work posture and can provide care. Another object of the present invention is to provide a backrest device having a simple structure and a low manufacturing cost.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a support section 14 which is detachably attached to a bed frame 12, and a support section 14 supported by the support section 14 to allow the inside of the bed 16 to be fixed. A backrest 1 that is swingably supported at least in a backward direction from the inside of the bed 16 to the outside in the front direction.
8 and a locking device 20 provided so as to be able to hold the back bending state. The swing shaft 22 of the backrest 18 is disposed at the outer edge of the bed frame 12, and the support 1
Reference numeral 4 denotes a backrest device 10 including a locking rod 30 which is attached to and detachable from the protective fence hole 28 of the bed 16.

[0006] The support portion 14 may be provided at a position separated from the outer peripheral frame 36 of the bed frame 12 and include an auxiliary leg 24 having a landing portion 40 at a lower end.

The locking device 20 is provided on the auxiliary leg 24 side with a locking arm 78 having a locking portion 76 which is directed rearward from the backrest portion 18 and is provided with the locking device. An engagement receiving portion 80 engaged with the engagement portion 76 of the arm 78 may be included.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A backrest apparatus according to the present invention comprises a support portion detachably engaged with a bed frame, a support portion supported by the support portion, the inside of the bed facing forward, and A backrest part that is swingably supported at least to the rear, and a locking device for holding the backrest state, and a swing axis of the backrest part is disposed at an outer edge of the bed frame. Have been.

[0009] Preferably, the support portion is made of a pipe material, a bar material, a shaped steel plate, or another material having strong rigidity and light weight having an engaging portion detachably attached to the bed frame. It is suitable. Since it is necessary to swing and support the backrest that is swingably supported from the inside of the bed to the outside at least so as to be able to bend back, a supporting leg for reinforcement is continuously provided outside the bed, or a box body or the like is provided. May be provided. Also,
The support portion may be formed in a movable frame provided with a detachable portion with respect to the bed frame at one end of a long side frame formed in a rectangular shape and a caster or the like at a lower end. The backrest is preferably provided with a backrest in an outer peripheral frame, and the outer peripheral frame is swingably supported at one end of the support part such that a bed side is a front part and a rearward part is capable of bending backward. The backrest may be held by a locking device so that the back bending angle can be changed stepwise. In addition, the support portion, the backrest portion, and the locking device may be configured so as to be folded at the center position of both side widths and expanded, for example, so as not to be bulky when carried or stored. Further, the support portion, the backrest portion, the locking device and the like may be configured to be disassembled and disassembled.

Accordingly, the support portion can be detachably connected to the outer edge portion of the bed frame to swing and support the backrest portion from the inside of the bed to the outside at an arbitrary backward bending angle. By simply turning the care receiver on the bed and receiving the upper body on the backrest, the care receiver can easily be supported in the work posture required for the care work. In addition, the entire device is lightweight and excellent in transportability, so that even women and girls can carry caregivers such as bedridden elderly people and disabled people in various work postures while traveling alone and visiting home care homes. Home care can be performed.

Further, the support portion may include a locking rod which is attached to and detached from the hole for the protective fence of the bed. The support bar can be easily attached to the bed by engaging the locking rod at one end of the support unit with the protection fence hole from which the protection fence of the bed is removed. In this state, even if the load of the care receiver is applied to the support portion, the support portion does not come off, and the care work can be safely continued.

[0012] The support portion may be provided at a position separated from an outer peripheral frame of the bed frame, and may include an auxiliary leg having a landing portion at a lower end. With this auxiliary leg, the support part whose one end is engaged with the bed frame is entirely reinforced, and the support can be stabilized. A non-slip member such as a rubber member may be attached to the landing portion. The support section is detachably connected to the bed frame even when the caretaker's load is applied to the backrest, which allows the landing section to slide back to the floor without allowing the landing section to slide outward. In addition, the backrest can be reliably supported. In addition, care work can be performed safely. The landing portion may be formed such that a ground contact portion with the floor surface is a circular plate, a square plate, or any other polygonal plate.

[0013] The locking device further includes a locking arm provided rearward from the backrest and having a locking portion;
A locking receiving portion provided on the auxiliary leg side and engaged with the locking portion of the locking arm. Preferably, the locking arm may include a locking portion including a plurality of locking grooves cut into an end surface of the elongated plate. Further, the locking receiving portion may be a receiving pin provided on the auxiliary leg side so as to be able to engage with an arbitrary locking groove. Further, the locking device may include, for example, a lifting cylinder pivotally mounted on both sides of the support portion. The upper end of the plunger of this lifting cylinder is pivotally attached to both sides of the backrest,
The backrest may be swingably supported so as to be able to bend back by extending or contracting the plunger.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an explanatory perspective view of a backrest device according to an embodiment of the present invention. FIG. 2 is an explanatory right side view of the backrest device shown in FIG. FIG. 4 is a perspective explanatory view showing a state where the backrest device is mounted on the bed frame. The backrest device 10 includes a support portion 14 which is detachably engaged with the bed frame 12, and is supported by the support portion 14, with the inside of the bed 16 facing forward, and at least rearward from the inside of the bed 16 to the outside. There is provided a backrest portion 18 which is swingably supported so as to be able to bend, and a locking device 20 which is provided so as to be able to maintain the backward bending state.

As shown in FIG. 4, the bed 16 has an elongated rectangular bed frame 12 supported at four corners by pillars 32 having casters 31 pivotally supported at the lower ends, and is mounted on the upper surface of the bed frame 12. Mattress 34, a mattress 35 attached to the mattress 34, and the like. The bed frame 12 is a long-side outer peripheral frame 3 arranged on both sides in the longitudinal direction.
6a, 36a, and short-side outer peripheral frames 36b, 36b having a short length and connected to the ends of the longer-side outer peripheral frames 36a, 36a. A plurality of protective fence holes 28 for attaching a protective fence (not shown) are provided on the upper surfaces of the long side peripheral frames 36a, 36a.
28 is opened. In addition, the short side outer peripheral frames 36b, 36
b is a protective fence 3 formed as a pair with the pillars 32, 32.
7, 37 are erected.

As shown in FIG. 4, the backrest device 10 is provided on the outer edge of the bed frame 12, that is, on one long side outer peripheral frame 36a. The backrest device 10 may be installed on a short-side peripheral frame or any other bed frame location.
In FIG. 1 and FIG. 2, the support portion 14 is made of an elongated metal pipe, a hard synthetic resin pipe, or the like, and is provided with two protection fence holes 28, 28 which are arranged opposite to each other on the bed frame 12.
And locking rods 30, 30 which are provided so as to be attached to and detached from the vehicle. That is, the support portion 14 basically supports the backrest portion 18 that is detachably engaged with the bed frame 12 and is supported to be able to bend back.
Any configuration may be used as long as it can be attached to and detached from the device and can support the backrest portion 18. The downward end portions of the locking rods 30, 30 are engaged with any adjacent protective fence holes 28, 28 of the long side outer peripheral frame 36a of the bed frame 12 from which the protective fence is removed, and one end of the support portion 14 Can be easily attached to the bed 16.

In the embodiment, the support portion 14 is provided with an auxiliary leg 24 extending from the long side outer peripheral frame 36a in the longitudinal direction of the bed frame 12 to the outer piece and having a landing portion 40 at the lower end. I have. That is, the holes 28 for the protective fence, 28
Auxiliary legs 24, 24 comprising two pipe frames bent in a substantially inverted L-shape are provided in series with the two locking rods 30, 30 which are attached and detached in the vertical direction. A plurality of connecting frames 26 are fixed in a ladder frame shape between the locking rods 30, 30 and the auxiliary legs 24, 24. As a result, as shown in FIG. 1, the entire support portion 14 includes a locking rod 30 attached to the bed frame 12,
If the lower side of the 30 side is a leg, it is formed as a rigid body in a state where it is cut off.

The auxiliary legs 24, 24 are formed by an inverted L-shaped horizontal portion 3.
9 and 39, and on the lower end side of the inverted L-shaped leg,
A landing section 40 is provided. In the embodiment, the columns 46, 46 are slidably inserted through the hollow portions of the pipes of the vertical portions 44, 44 of the inverted L-shaped auxiliary legs 24, 24 so as to be adjustable in height. At the lower end, a disk-shaped landing plate 50 is attached. The landing section 40 includes a column 46 and a landing plate 50. Adjusting screws 48, 48 screwed into screw holes provided in the vertical portions 44, 44 use the vertical portions 44, 4.
4 and the supporting columns 46, 46 are adjusted so that the auxiliary legs 2
The support height of the entire support portion 14 by the support members 4 and 24 is appropriately set, and the support of the entire support portion 14 is reinforced. In particular, since the backrest portion 18 needs to be supported from the inside of the bed in a backward bending state, the auxiliary legs 24, 24 extending in the direction away from the bed surely reinforce the supporting force. A non-slip member such as a rubber member may be attached to the lower surface of the landing plate 50 of the landing section 40. The landing portion 40 does not slip on the floor surface, and is detachably connected to the bed frame 12 even when a load of the care receiver is applied to the backrest portion 18 provided on the support portion 14 so as to be able to bend back outward. Support part 1
The backrest 18 can be reliably supported together with the four portions.

The supporting columns 46, 46 are extended or contracted with respect to the vertical portions 44, 44 of the auxiliary legs 24, 24, and are locked by adjusting screws 48, 48 in that state, and the upper surfaces of the auxiliary legs 24, 24 are locked. Can be held substantially horizontally. The backrest 18 is securely supported, and the nursing work can be performed safely.

On the other hand, the backrest 1
8 is provided to be able to bend back and forth with reference to the long side of the bed. In the embodiment, as shown in FIGS. 1 and 4, the backrest portion 18 includes a backrest body 56 mounted via a plurality of receiving pieces 54 in the inverted U-shaped frame 52. This backrest 5
Reference numeral 6 denotes a cushioned plate, cloth, or the like. The configuration of the backrest body 56 is arbitrary. Any material can be used as long as the back can be supported on the mattress 34 with the legs extended, for example.

The swing shaft 22 of the backrest 18 is arranged at the outer edge of the bed frame 12. That is, the swing shaft 22 is provided at an intermediate position between the backrest portion 18 and the support portion, and the swing shaft 22 allows the backrest portion 18 to swing back and forth, that is, to bend back and forth. It has become. In the embodiment, a U-shaped bearing 21 is provided at an upper portion of the support portion 14 having a lower end supported by the protective fence holes 28, 28 of the long side outer peripheral frame 36a, that is, at the distal end portions of the inverted L-shaped auxiliary legs 24, 24. , 21 are fixed. The swing shaft 22 is fixed to the lower end of the inverted U-shaped frame 52 of the backrest 18 so as to be longer in the lateral direction.
, The backrest portion 18 swings from the outer peripheral frame 36a of the long side of the bed to the inside or outside of the bed so as to be able to bend back and forth via the swing shaft 22, and is brought into a locked state.

The backrest 18 and the support 14 are linked by a locking device 20, which will be described later, to hold the backrest 18 in a backward bending state. Thus, the swing shaft 2 of the backrest 18 is
When the support 2 and the support 14 are individually attached to the outer peripheral frame 36a, it is not necessary to finely adjust the height and the like of the support 14 and the back support 18 can be easily supported in the swinging state in the backward bending state. I can do it. Further, it is also possible to directly support the backrest 18 on the floor only by the locking device 20 without mounting the support 14 on the bed frame 12.

A U-shaped handle 70 for adjusting the backward bending angle of the backrest 18 is provided on the front side of the opposite U-shaped frame 52 and the rear side of the upper end frame. As shown in FIG. 3, the U-shaped handles 70, 70 on both sides are provided with locking bands 72, 72 for safely catching the upper body M of the care-receiver abutted on the backrest 18. This locking band 72,
At the mutually overlapping tips of the 72, hook-and-loop fasteners 74, 74 which are engaged with each other are attached. The caregiver can grasp and hold any of the U-shaped handles 70 to swing and support the backrest portion 18 about the swing shaft 22 at an arbitrary backward bending angle.

The back support portion 18 is vertically fixed to a substantially central position of a rear surface 58 of the back support body 56, and is vertically slidably fitted into the vertical guide tube 60. Screw 62 screwed into the screw hole of the vertical guide cylinder 60
And a pillow 68 fixed on the upper end side of the long shaft 64 upwardly of the front surface 56 of the backrest body 56. The head on the upper body side, which has been applied to the back support 56, can be stably supported by the pillow 68.

The locking device 20 for holding the backrest 18 in a backward bending state includes locking arms 78 provided with locking portions 76 provided from both sides of the backrest 18 toward the rear side, and auxiliary devices. The locking portions 7 of the locking arms 78, 78 are provided on the legs 24 side.
6 and a lock receiving portion 80, 80 engaged with the fixing member 6.

As shown in the embodiment of FIGS. 1 and 2, the locking arms 78, 78 are formed in a vertically long plate, and the upper end thereof is provided to project rearward at an intermediate position between both side frames of the backrest portion 18. It is pivotally attached to the plate pieces 82, 82 and hangs outward from the support portion 14. The lower ends of the locking arms 78, 78 are connected by a connecting shaft 84 that bypasses the lower surfaces of the auxiliary legs 24, 24. Locking arm 7 pivotally attached to both side frames of backrest 18
When the backrest portion 18 swings in the front-back direction, the backrests 8 and 78 move together with the connecting shaft 84 in an arc shape in a slightly inclined rearward direction. The locking portions 76 of the locking arms 78, 78
Has a plurality of locking grooves 86 cut out along the lower surface side of the locking arm 78 of a vertically long plate.

The support portion 14 is provided with a locking receiving portion 80 which is engaged with the locking groove 86 of the locking arms 78, 78. The locking receiving portion 80 includes receiving pins 90, 90 protruding outward from plate pieces 88, 88 that are vertically provided on the lower surface side at positions near the auxiliary legs 24, 24 of the supporting portion 14. The receiving pins 90, 90 are provided with optional locking grooves 8 of the locking arms 78, 78.
The backrest portion 18 with respect to the support portion 14 can be held in a backward bending state by detachably engaging the sixth and 86 with each other.

The biasing springs 91 are provided between the upper end positions of the locking arms 78 and 78 and the opposite side frames of the inverted U-shaped frame 52 of the backrest 18.
91 are stretched. The locking arms 78 are urged toward the backrest 18 by the urging springs 91, 91, and are engaged with the receiving pins 90, 90 of the support 14.
The locking grooves 86, 86 of 8, 78 are prevented from coming off.

When the locking grooves 86, 86 near the lower ends of the locking arms 78, 78 are engaged with the receiving pins 90, 90, the back bending angle of the backrest 18 becomes shallow, and the locking arms 78,
Receiving pins 90, 9 for receiving locking grooves 86, 86 near the upper end of 78
In the state in which the backrest 18 is engaged with the backrest, the backrest angle of the backrest 18 is deep, and the backrest 18 is held close to the upper surface of the support part 14. Therefore, the locking portions 76, 76 of the locking arms 78, 78 can be engaged with the locking receiving portions 80, 80 on the auxiliary legs 24, 24, and the backrest portion 18 can be held in a backward bending state. The caregiver's upper body M can be easily supported by the backrest 18 in an arbitrary posture, and the care work can be easily performed.

Next, the operation of the backrest device according to the present invention will be described with reference to the drawings. The backrest device 10 is for performing care work for a homebound elderly who is bedridden on the bed 16 or a care recipient such as a disabled person.
1 shows an embodiment of hair care and hair washing care for a cared person. That is, a protection fence (not shown) supported by the protection fence holes 28 of the long side outer peripheral frames 36a, 36a of the bed frame 12 is removed, and any two adjacent protection fences are set in the plurality of protection fence holes 28.
Engagement rods 30 provided on the lower surface on one end side of the support portion 14 are engaged with the individual protection fence holes 28. Next, the supporting columns 46, 46 on the end side of the auxiliary legs 24, 24, which are installed so as to be separated from the bed frame 12 of the support portion 14, are supported by extending or contracting the auxiliary legs 24, 24. Part 1
The height is adjusted so that the upper surface side of 4 is substantially horizontal, and the adjusting screws 48 are tightened.

In this state, the swing shaft 22 on the lower end side of the backrest 18 is pivotally mounted on U-shaped bearings 21, 21 on the upper surface on the end side of the auxiliary legs 24, 24 of the support portion 14. Further, the locking portions 76, 76 of the locking arms 78, 78, which are pivotally mounted on both sides of the backrest portion 18 toward the rear side, are disengaged from the locking receiving portions 80, 80 on the support portion 14 side. The locking grooves 8 on the lower end side of the locking arms 78, 78 among the locking grooves 86 of the stopping portion 76.
6 and 86 are engaged with the receiving pins 90 and 90 of the locking receiving portions 80 and 80, respectively. In this state, the back bending angle of the backrest portion 18 becomes shallow, and as shown in FIG. 5, the backrest portion 18 is held at a back bending angle close to a substantially vertical direction.

The mattress 34 of the bed 16 is held in a state where the backrest portion 18 is set and held at a backward bending angle close to a substantially vertical direction.
The care receiver who is bedridden on the laying cloth 35 or the like is turned on the laying cloth 35 so that the upper body M can be easily received by the backrest portion 18. The fastening bands 72, 72 of the backrest 18 are wrapped around the upper body M, and the hook-and-loop fasteners 74, 74 are engaged with each other to securely hold the caretaker's upper body M on the backrest 18. I do. In this state, the hair of the male cared person is haircut, or the beauty setting of the female cared person's head is performed. Further, the mirror 9 is inserted into the protection fence holes 28, 28 of the long side outer peripheral frame 36a of the other side of the bed frame 12 through a support or the like.
2 may be provided.

Next, when the haircut and the beauty setting are completed, the pillow 68 of the backrest 18 is pulled out of the vertical guide cylinder 60 together with the long shaft 64. A wash basin 94 is installed in the vicinity of the auxiliary legs 24, 24 of the support portion 14, and the locking grooves 86, 86 near the lower ends of the locking arms 78, 78 of the backrest portion 18 receive the pins 9.
The caregiver is disengaged from 0 and 90, and the backrest portion 18 is tilted together with the upper body portion M of the care receiver toward the upper surface of the support portion 14 so that the head of the care receiver approaches the upper part of the wash basin 94. Stop arm 7
8, 9
Attach to 0, 90. In this state, the head wash of the bedridden caregiver can be easily performed using the wash basin 94.

After the shampooing care work is completed, the backrest portion 18 is again erected in the vertical direction so that the locking arms 78, 78 are provided.
After the holding bands 72, 72 holding the care receiver are disengaged, the upper body M of the care receiver is turned to the normal position on the bed 16 from the backrest portion 18. And the locking rods 30, 30 of the support portion 14 are
To finish the care work. The protection fence is mounted again in the protection fence hole 28. In addition, the backrest device 10 is not limited to nursing work such as haircutting and shampooing. For example, the backrest unit 18 feeds food while holding the cared person, or wipes the body to provide nursing care services. Can be efficiently performed without forcing the care receiver to take an unreasonable posture.

As described above, in the backrest device 10 according to the present invention, the swinging shaft 22 is disposed on the outer edge of the bed frame 12 so that the backrest portion is moved outward from the inside of the bed 16 at an arbitrary backward bending angle. It is possible to set the care recipient on the bed to a working posture necessary for the care work without lifting the bedridden caregiver on the bed 16 or supporting the bed caregiver for supporting the posture. It can be easily supported. Then, the nursing work labor can be reduced, and the nursing worker can efficiently perform the nursing work without forcing the care receiver to take an unreasonable posture. In addition, since the support portion 14 is formed using the bed 16, the structure of the entire device is simple and lightweight, and the device is excellent in transportability. Care can be performed by simply supporting the care receiver in various care work postures. Further, the structure is simple and the manufacturing cost is low.

[0036]

As described above, the backrest device according to the present invention comprises: a support portion detachably engaged with a bed frame; a support portion supported by the support portion; A backrest part that is swingably supported from the inside to the outside so as to be able to bend back at least is provided, and a locking device for holding the backbend state is provided. By being placed on the outer edge,
A swing axis is placed on the outer edge of the bed frame, and the backrest can be set at an arbitrary back bending angle from the inside of the bed to the outside, so that the bedridden caregiver can be held on the bed or held in position. The work required for nursing care can be performed by simply turning the care receiver on the bed and receiving the upper body on the backrest without supporting the patient for support. The patient can be easily supported by the posture, the care work labor is reduced, and the care recipient can perform the care work efficiently without forcing the care recipient to take an unreasonable posture. In addition, since the supporting part is formed using a bed, the structure of the entire device is simple, lightweight, and excellent in transportability, so that even women and girls can take care of being bedridden on the bed while carrying it alone and attaching it to the bed frame. The nursing can be performed by simply supporting the person in various nursing work postures. Further, the structure is simple and the manufacturing cost is low.

Further, the support portion includes a locking rod which is attached to and detachable from the protective fence hole of the bed, so that the locking rod is inserted into the protective fence hole from which the bed protective fence is removed. The support portion can be easily attached to the bed by being engaged, and the support portion can be made lightweight, and the portability can be effectively achieved by reducing the weight and size of the entire apparatus. In addition, the device structure for support can be simplified and reliably supported,
Even if the load of the care receiver is applied to the support section, the support section does not separate, and the care work can be safely continued.

[0038] Further, the support portion is extended at a position separated from the outer peripheral frame of the bed frame, and has an auxiliary leg provided with a landing portion at a lower end, so that the auxiliary leg provided with a landing portion at a lower end. Thereby, even if a load of the care receiver is applied to the backrest provided to be able to bend back outward in the support part, the backrest can be reliably supported together with the support part detachably connected to the bed frame. Yes, care work can be done safely.

The locking device further includes a locking arm provided rearward from the backrest and having a locking portion;
A lock receiving portion provided on the auxiliary leg side and engaged with the locking portion of the locking arm, thereby engaging the locking portion of the locking arm with the locking receiving portion on the auxiliary leg side. Thus, the backrest portion can be held in a backward bending state, and the caretaker's upper body can be easily supported by the backrest portion in an arbitrary posture to achieve the effect of the care work.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view of a backrest device according to an embodiment of the present invention.

FIG. 2 is an explanatory right side view of the backrest device shown in FIG. 1;

FIG. 3 is an enlarged sectional explanatory view taken along line AA of FIG. 2;

FIG. 4 is an explanatory perspective view showing a state in which a backrest device is connected to an outer edge of a bed frame;

FIG. 5 is an explanatory view of a state in which the backrest is held in an upright state and the upper body of the care receiver is supported by the backrest;

FIG. 6 is an explanatory view of a state in which the backrest is held in a lying state and the upper body of the care receiver is supported by the backrest in a supine position.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Backrest device 12 Bed frame 14 Support part 16 Bed 18 Backrest part 20 Locking device 22 Swing axis 24 Auxiliary leg 28 Protective fence hole 30 Locking rod 36 Outer frame 40 Landing part 78 Locking arm 80 Locking receiving part

Claims (1)

(57) [Claims] A support portion detachably engaged with the bed frame; a support portion supported by the support portion, the inside of the bed facing forward,
A backrest that is swingably supported from the inside of the bed outward at least to be able to bend back; and a locking device provided so as to be able to hold the backbend state. The driving shaft is disposed at an outer edge of the bed frame, and the support portion is attached to and detachable from a hole for a protective fence of the bed.
A backrest device that includes a locking rod provided on the Noh .