JPH10328242A - Wheelchair device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheelchair device such that a person to be nursed who is seated on a hip seat can be seated in a stable, comfortable position by tilting the person backward by a predetermined angle together with the hip seat, and that excellent controllability is assured when the hip seat and a backrest are tilted, thus allowing smooth nursing while keeping stable the position of the person to be nursed. SOLUTION: This device has a main body frame 14 against which a rolling element 12 is supported on its axis, a hip seat 16 provided in such a way as to be capable of rocking back and forth on the upper side of the main body frame and being braked, and a backrest part 18 provided at the edge of the hip seat in such a way as to be capable of rocking back and forth relative to the hip seat and of being braked, and includes a control mechanism for controlling the rocking and braking of the hip seat and the rocking and braking of the backrest part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair device.

[0002]

2. Description of the Related Art In recent years, injured persons and elderly persons who have difficulty walking due to illness have been using wheelchairs and various walkers in hospitals, homes, etc. in order to extend their range of action from being bedridden. Nursing care treatments are performed indoors and outdoors, and efforts are made to keep the injured and elderly feeling stable by leaving the bed and touching the clean air outside. As a wheelchair device used for this care treatment, as shown in a wheelchair tilt angle diagram of FIG. 9, a backrest portion 220 is swung back and forth on a rear end portion of a main body frame 200 having wheels and casters pivotally supported on both sides. It is movably pivoted, a footrest 240 is provided on the front end side of the main body frame 200 so as to be adjustable in inclination, and a seating seat 260 is provided on the main body frame 200 to allow the care receiver to sit on the backrest 220 and the footrest 2.
The caregiver pushes and moves while gripping the grip 280 provided on the back side of the backrest portion by adjusting the inclination angle and the like of 40.

[0003]

However, in the wheelchair device, the backrest is provided at the rear end side of the main body frame so as to be tilted back and forth, and the seating seat is held substantially horizontally on the main body frame. In the case where the backrest is tilted in order to provide a comfortable state, the posture of the seated caregiver is likely to shift to the front side, easily causing pain to the caregiver, and gradually shifting to the front, resulting in low stability. There are drawbacks. When tilting the backrest pivotally attached to the rear edge of the body frame from the vertical direction to the back side, the backrest tilts while drawing an arc-shaped trajectory, so lean against the backrest. The cared person's head and upper body are likely to shift downward from the backrest, and at the same time, the buttocks are moved forward from the seating seat, further reducing stability, and the caregiver is always in front of the cared person. There is a problem that it is necessary to maintain the posture stably by pulling up the wheelchair, and it is troublesome to perform care in a wheelchair smoothly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has the following objects. (1) A care receiver sitting on a buttrest seat can be tilted to the back side at an arbitrary angle together with the buttrest seat. You can tilt it to sit in a stable and comfortable position,
(2) When the backrest is tilted with respect to the body frame, the head and upper body of the cared person do not shift downward from the backrest, and the buttocks do not slip so as to be drawn forward. (3) An object of the present invention is to provide a wheelchair device which is excellent in operability when tilting the buttocks rest and the backrest, and (4) can maintain the posture of the cared person stably at all times so that care can be smoothly performed.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a main body frame 1 having a rolling element 12 pivotally supported.
4, a butt rest 16 provided on the upper surface side of the main body frame 14 so as to be able to swing back and forth, and a butt rest 16 provided at an edge of the butt rest 16 to swing back and forth with respect to the buttocks 16 A wheelchair device 10 having a backrest 18 provided so as to be capable of being provided, and having a control mechanism 20 for controlling the swinging and braking of the backrest 16 and the swinging and braking of the backrest 18. Is done.

A first rocking brake device 76 for rocking and braking the rear seat 16 and a second rocking brake device 78 for rocking and braking the backrest 18 are provided. ,
The control mechanism 20 may be provided on the back side of the backrest section 18 and may include an operation section 80 connected to the first and second swing braking devices 76 and 78.

Further, the backrest portion 18 is provided with the buttrest seat 1.
6 is provided so as to be swingable by a swing shaft 58 provided thereon, and the swing shaft 58 is an extension line of the backrest portion 18 so as not to be located on an extension of the backrest portion 18 or a tangent line thereof. It may be provided with a misalignment mounting member 60 which is installed on the front side in a misaligned manner and which is swingably connected to the swing shaft 58 at the misaligned position.

The main body frame 14 and the butt rest 1
The backrest portion 6 and the backrest portion 18 may be provided in such a manner that they can be expanded, folded, and stored in the width direction thereof.

The operating section 80 is connected to the butt rest 16.
And two systems of opening and closing grip mechanisms 88a and 88b for swinging and braking each of the backrest portion 18 and these two.
The opening and closing grip mechanisms 88a and 88b of the system
The grip directions of 0a and 90b may be the same and may be arranged at close positions.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wheelchair device according to the present invention comprises a main body frame on which rolling elements are pivotally supported, a buttocks resting seat provided on the upper surface side of the main body frame so as to be able to swing back and forth, and this buttocks rest. A backrest provided at an edge of the seat and swingably movable forward and backward with respect to the buttocks resting seat;
A control mechanism is provided for controlling the swing and braking of the rear seat and the swing and braking of the backrest. It is preferable that the main body frame, the buttocks rest, the backrest, and the like be made of a light-weight, light-strength light alloy pipe frame or the like. However, without being limited to this, a frame made of stainless steel, hard synthetic resin, or the like may be formed as a material.
The body frame supports the rolling elements at the front and rear positions on the lower surfaces on both sides. The front rolling element is preferably a small-diameter caster that is easy to change direction. The rear rolling element is preferably a large-diameter tire wheel. The rolling element is simply supported in a free-wheeling manner to push the main body frame, or an electric wheelchair is installed inside and rotates as an electric wheelchair linked therewith. You may move it. Further, the overall shape of the wheelchair device is preferably a rectangular frame shape in plan view. However, without being limited to this, the oblong shape of the trunk,
It may be polygonal. As the control mechanism for controlling the swinging and braking of the backrest and the swinging and braking of the backrest, a brake cylinder that is operated by a manual operation is preferable. However, the present invention is not limited to this, and a telescopic cylinder mechanism driven by hydraulic pressure, pneumatic pressure, or the like may be used in conjunction with a motor driven by a battery or the like as a driving source.

A first rocking brake device for rocking and braking the rear seat and a second rocking brake device for rocking and braking the backrest are provided. May be provided on the back side of the backrest, and may include an operation unit connected to the first and second swing braking devices. As the operation unit, an operation line linked to the first and second swing braking devices such as a brake cylinder and an operation lever connected to the operation line are preferable. However, the present invention is not limited to this, and the first and second swing braking mechanisms may be constituted by a hydraulic mechanism or an electric mechanism, and the control such as driving and stopping may be operated by a push button or the like.

Further, the backrest is provided so as to be swingable by a swing shaft provided on the side of the buttocks, and the swing shaft is not located on an extension of the backrest or on a tangent line thereof. As described above, a center misalignment mounting member may be provided at a position deviated from the extension line of the backrest portion in a forward direction with respect to the back shaft, and further swingably connected to the swing shaft at the position of the misalignment. Good. Preferably, the backrest portion is eccentrically eccentrically shifted from the rear end side of the buttocks rest to a position near the center by a pivot shaft and a misalignment mounting member, and is pivotally attached to the buttocks rest. The misalignment member is
Preferably, they are continuously provided in a projecting manner from the lower ends on both sides of the backrest toward the swing shaft. However, the present invention is not limited to this, and a reinforcing frame, a reinforcing plate, or the like may be provided to protrude forward on both sides of the backrest portion so as to be connected to the swing shaft.

Further, the main body frame, the buttocks rest, and the backrest may be provided in such a manner that the main body frame, the backrest, and the backrest can be freely assembled, folded and stored in the width direction. Preferably, the main body frame is connected to the left and right side frames, and the left and right side frames are extended and assembled in a plurality of cross frames so as to be freely folded and stored. However, the invention is not limited to linking the left and right frames with a plurality of intersecting frames. For example, a V-shaped toggle mechanism and a pantograph mechanism may be connected.

[0014] The operating unit includes two systems of opening and closing grip mechanisms for swinging and braking each of the buttocks rest and the backrest.
The grips may be arranged in the same gripping direction and at close positions. It is preferable that the operation unit includes an operation lever connected to two operation lines on the grip. However, the present invention is not limited to this, and an electric mechanism, a pneumatic or hydraulic mechanism may be provided as a mechanism for swinging and braking each of the buttocks rest and the backrest, and may be easily switched by a switch operation.

[0015]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a right side view of a wheelchair device according to an embodiment of the present invention, FIG. 2 is a front view of the wheelchair device, and FIG. 3 is a partial perspective explanatory view of the wheelchair device. . The wheelchair device 10 according to the present invention includes a main body frame 14 on which the rolling elements 12 are pivotally supported, an assembling seat 16 provided on the upper surface side of the main body frame 14 so as to be able to swing back and forth and to be braked, And a backrest 18 provided at the edge of the rear seat 16 so as to be able to swing back and forth with respect to the rear seat 16 and to be capable of braking. Control mechanism 20 for controlling rocking and braking
It has.

The frames such as the main body frame 14, the butt rest 16 and the backrest 18 of the wheelchair device 10 are made of a light and strong light alloy pipe frame or the like. However, the material is not limited to a light alloy, and a frame made of stainless steel, hard synthetic resin, or the like may be used as a material.
As shown in FIG. 2, the main body frame 14 has left and right symmetric left and right frames 22, 22 which are arranged at intervals on both sides. The left and right frames 22, 22 include an upper frame 24 having both ends bent downward, a lower frame 26 connected to the lower end of the upper frame 24, and a rear end closer to the upper and lower frames 24, 26. A long rectangular frame is formed by the vertical frame 28 continuously provided at the position. As shown in FIG. 1, the lower frame 26 is cut at a required length at an intermediate position thereof and connected by a pivot 30, and a crossing rod for enlarged assembly and folding storage described later is connected to the pivot 30. Tube 32 is rotatably fitted around an axis.

On the front and rear ends of a lower frame 26 of the left and right frames 22, 22, a caster 34 as a rolling element 12 and a normal tire wheel 36 are supported. As shown in FIGS. 1, 4 and 5, two front and rear crossings pivoted in an X-shape are provided on the rotating pipes 32 and 32 provided in the lower frames 26 and 26 of the left and right side frames 22 and 22. Both lower ends of the rails 38, 38 are fixed, and
The upper ends of the front and rear sides of the front and rear ends 8 and 38 are connected to each other by connecting rods 40 and 40. The upper frame 24 of the left and right frames 22, 22,
A pair of locking pieces 42, 42 for detachably receiving the connecting rods 40, 40 are fixed to the lower surface near the center of the projection 24 so as to protrude inward.

As a result, the left and right side frames 22, 22 are expanded in the left-right width direction, and the connecting rods 4 at both upper ends of the front-rear crossing rods 38, 38 are formed.
The main frame 14 is assembled by locking the 0, 40 with the locking pieces 42, 42 of the left and right side frames 22, 22. At this time, the main body frame 14 is truss-assembled by the front and rear crossing rods 38, 38 to maintain strength. In addition, the connecting rods 4
The left and right side frames 22 and 22 are closed and contracted by disengaging the 0 and 40, so that the main body frame 14 can be compactly stored together with the butt rest 16 and the backrest portion 18 described later. In addition, as shown in FIG.
Both ends of the reinforcing frames 44, 44 are pivotally attached to the vertical frames 28, 28 of the second and the second 22 to reinforce the crossing rod 38. Tire wheel 3
6 is supported by the main body frame 14 in a free-running manner,
The caregiver located on the rear side of the body 8 manually moves the main body frame 14 while pushing the backrest portion 18 to move it. However, the present invention is not limited to this, and an electric wheelchair may be provided in the main body frame 14, for example, having an electric motor powered by a battery or the like, and automatically moving the electric motor in conjunction with the tire wheels 36.

As shown in FIG. 1 and FIG.
Are the upper frames 2 of the left and right frames 22, 22 of the main body frame 14.
4 and 24 are arranged side by side at an interval, and straight right and left supported by inverted U-shaped pivot attachments 46 and 46 pivotally attached to the upper frames 24 and 24 above the vertical frame 28. Ass seat frame 48, 48
And seat plates 52 with seats removably mounted on receiving seats 50, 50 provided at positions near both ends of the left and right rear seat frames 48, 48. A stopper hole 5 is formed in the receiving seat 50 in the vertical direction.
4 is opened, and a shaft piece 56 that is engaged with the stop hole 54 of the receiving seat 50 is provided at four corners of the lower surface of the seat plate 52 with a seat. The left and right side frames 22, 22 are supported by the main body frame 14 so as to be able to swing back and forth about pivotal attachments 46, 46 pivotally attached to the upper frames 24, 24 of the main body frame 14. In the figure, reference numeral 57 denotes a footrest that is detachably connected to the front ends of the left and right rear seat frames 48, 48.

As a result, the butt rest 16 and the backrest 18
Can be set to an arbitrary angle, and the inclination angle of the buttocks rest 16 with respect to the main body frame 14 can be set to any angle. Therefore, the care receiver sitting on the buttocks rest 16 can be taken together with the buttocks rest 16. It is possible to stabilize the backrest 18 in a stable state with the backrest tilted to the rear side, and to stabilize it in a comfortable posture without pain, and there is no danger that the care receiver will fall off the backrest when moving. Can care for Further, the swinging and braking of the butt rest 16 and the swinging and braking of the backrest portion 18 can be easily controlled by a control section described later, so that the operability is excellent and the care of the injured and the elderly can be smoothly performed.

As shown in FIGS. 1 and 3, the backrest 18 is swingably provided by a swing shaft 58 provided on the hip rest 16, and the swing shaft 58 is connected to the backrest 18. It is installed so as to be not aligned on the extension line or the tangent line of the backrest portion 18 in front of the extension line of the backrest portion 18 and further connected to the swing shaft 58 at this misalignment position so as to be swingable. The misalignment mounting member 60 is provided.

In the embodiment, the backrest section 18 has left and right backrest frames 62, 62 arranged substantially vertically.
The lower ends of the left and right backrest frames 62, L
The misalignment mounting members 60, 60 are projected in two stages vertically, and swing shafts 58, 58 are connected to the ends of the misalignment mounting members 60, 60 in a downward L-shape. The misalignment attachment member 60 is reinforced by projecting upward and downward in two stages, but is not necessarily limited to this, and may be a single pipe frame or a plate piece.

The lower ends of the rocking shafts 58, 58 can be pivoted forward and backward by hinges 63, 63 provided near the center of the right and left rear seat frames 48, 48 disposed on both sides of the above-mentioned rear mounting seat 16. Being pivoted. As shown in FIG.
In the upper and lower positions on the inner surface side of 2, 62, a backing plate 6 with a seat is provided.
Attachment pieces 66, 66 for detachably attaching 4 are protruded in opposition to each other. Fasteners 68 provided at four corners on the back side of the backing plate 64 with a sheet are fastened to the attachment pieces 66, 66. ing. As shown in FIG. 1 and FIG.
A pillow 70 is provided on the fixture 72 at a substantially upper central position so as to be adjustable in height. Also, left and right backrest frames 62, 62
An inverted U-shaped connecting rod 74 is detachably connected to an upper end of the connecting rod 74.

Thus, for example, when the backrest 18 is arranged vertically, the lower end of the swing shaft 58 is
8 moves forward so that the rotation locus around the swing axis moves along a locus portion close to the horizontal direction, and when the backrest portion 18 is tilted to the rear side, the backrest portion is moved. 18. The care receiver with his back rested on 18 is tilted rearward with the back part sunk, so that the care receiver's head is displaced downward from the backrest pillow and the back part is forward. The cared person's posture when the backrest portion 18 is tilted to the rear side can be maintained in a stable state without being sunk in. Further, since the angle between the buttocks rest portion 16 and the backrest portion 18 can be set so that the cared person can maintain a comfortable posture, no pain is caused even when sitting for a long time.

The pivotal attachments 46, 4
A first rocking braking device 76 for rocking and braking the hip rest 16 pivotally mounted via 6, and the lower ends of the swinging shafts 58, 58 on the right and left hip seat frames 48, 48 of the hip rest 16. Oscillating braking device 7 for oscillating and braking the backrest portion 18 pivotally attached thereto
8, the control mechanism 20 is provided on the back side of the backrest 18, and the first and second swing braking devices 76 and 78 are provided.
An operation unit 80 is provided.

The first and second swing braking devices 76 and 78
Are brake cylinders 82a, 82b and telescopic guide shafts 84a, 8 inserted through the brake cylinders 82a, 82b.
4b, and braking lines 82a, 82b, which are linked to the brake cylinders 82a, 82b, to brake the inner telescopic guide shafts 84a, 84b, and operation lines 86a, 86b for releasing the braking. As shown in FIGS. 2 and 3, first swing braking devices 76 and 76 are provided on both sides of the main body frame 14, and the right and left rear seat frames 48 and 48 pivotally attached to the left and right frames 22 and 22. The brake cylinders 82a, 82a of the first swing braking devices 76, 76 are pivotally attached to the left and right upper frames 24, 24 at positions closer to the front end than the pivotal attachment 46, and the upper ends of the telescopic guide shafts 84a, 84a are the right and left hip seats. Frames 48, 48 are pivotally attached. This braking cylinder 82
Operation lines 86a, 86a respectively linked to a, 82a are extended to the operation unit 80. The second swing braking device 7 is provided at the rear end positions of the upper left and right frames 24 of the main body frame 14.
8, 78 brake cylinders 82b, 82b are pivotally mounted in the front-rear direction, and the upper ends of the telescopic guide shafts 84b, 84b are pivotally mounted on the left and right back support frames 62, 62 of the back support 18. Operation lines 86b, 86b respectively linked to the brake cylinders 82b, 82b are extended to the operation section 80.

As described above, since the operation section 80 is provided on the back side of the backrest section 18, a caregiver standing on the back side of the wheelchair can easily operate the operation section 80, and (1) Telescopic guide shafts 84a, 84 of the rocking braking devices 76, 76
a, and the retracting operation of the telescopic guide shafts 84b, 84b of the second swing braking devices 78, 78, as shown in the wheelchair tilt angle diagram of FIGS. While setting the inclination angle K2 of the mounting portion 16 and the inclination angle K1 of the backrest portion 18 with respect to the buttocks mounting portion 16 to arbitrary angles, care using a wheelchair can be performed smoothly.

As shown in FIG. 1 and FIG.
Are two systems of opening and closing grip mechanisms 88a, 88 for swinging and braking each of the butt rest 16 and the backrest 18.
b. These two systems of opening / closing grip mechanisms 88a, 8
8b has left and right grips 90a, 90b projecting from the upper ends of the left and right backrest frames 62, 62 in a reverse L-shape in the rear direction, and the left and right grips 90a, 90b are provided with a first swing braking device. The gripping directions of the grips are the same, and the gripping directions of the grips are linked to the first operation levers 92a and 92a arranged at close positions and the second swing braking devices 78 and 78. The second operation levers 92b and 92b are provided at the same and close positions.

The first operation levers 92a, 92a have braking cylinders 82a, 82 of the first swing braking devices 76, 76, respectively.
Operation lines 86a, 86a extending from “a” are connected. Further, operation lines 86b, 86b extending from the brake cylinders 82b, 82b of the second swing braking devices 78, 78 are connected to the second operation levers 92b, 92b. The caregiver standing on the back of the backrest portion 18 has a left and right grip 90.
a, 90b and the first operation levers 92a, 92a, the brake cylinder 82 of the first swing braking device 76, 76 is operated.
The braking of the telescopic guide shafts 84a, 84a by the a, 82a is released. Then, while holding the left and right grips and pressing downward, the butt rest 16 is tilted rearward about the pivotal attachments 46, 46, and the grips of the first operation levers 92a, 92a are released at a suitable inclination angle. , Brake cylinder 8
The telescopic guide shafts 84a, 84a are braked in the inside 2a, 82a, so that the inclination angle of the rear seat 16 can be maintained.

Next, the left and right grips 90a, 90b and the second
When the operation levers 92b, 92b are squeezed, the brakes of the telescopic guide shafts 84b, 84b by the brake cylinders 82b, 82b of the second swing braking devices 78, 78 are released, and the left and right backrest frames 62, 62 with respect to the buttocks resting seat 16 of the backrest frames 62, 62. The tilt angle is adjusted to release the grip of the second operation levers 92b, 92b, and the telescopic guide shafts 84b, 84 are set in the brake cylinders 82b, 82b.
b is braked, and the inclination angle of the backrest 16 is maintained at a suitable angle. Thereby, when operating the buttocks rest 16 and the backrest 18, two grip mechanisms 88 are provided.
Since the a and 88b are gripped at close positions while being individually gripped by both hands, the operation is stable, and reliable control and movement can be performed. 1 and 2, reference numeral 94 denotes an armrest rod pivotally mounted on both sides of the backrest portion 18 and supported on both sides of the hip rest 16 so as to be freely adjustable in height. Reference numeral 96 denotes tire wheel brakes. .

Next, a wheelchair device 1 according to an embodiment of the present invention.
The operation of 0 will be described. When a person with a disability, an elderly person, or the like is placed on the wheelchair device 10 according to the present invention for nursing care, as shown in the wheelchair tilt angle diagrams of FIGS. Is held in a substantially vertical direction, and the care receiver is transferred to and seated on the buttocks 16. In this state, the caregiver standing on the back side of the backrest 18 grips the left and right grips 90a, 90b of the left and right opening and closing grip mechanisms 88a, 88b of the operation unit 80 and the second operation levers 92b, 92b to perform the second operation. (2) The braking of the telescopic guide shafts 84b, 84b by the brake cylinders 82b, 82b of the two swing braking devices 78, 78 is released, and the backrest 18 is tilted rearward with respect to the buttocks resting seat 16. Then, the second operation levers 92b, 92
By releasing the grip of b, the telescopic guide shafts 84b, 84b of the second swing braking devices 78, 78 are braked to maintain the inclination angle of the backrest 16 at a suitable angle K1.

Next, the caregiver applies the left and right grips 90a, 90a.
b and the first operation levers 92a, 92a,
Brake cylinders 82a, 82a of rocking brake devices 76, 76
Release the braking of the telescopic guide shafts 84a, 84a, and tilt the hip rest 16 toward the rear side with respect to the main body frame 14 by a suitable angle K2. After that, the first operation lever 92
a, 92a to release the first swing braking devices 76, 7
The brake is applied to the telescopic guide shafts 84a, 84a. As a result, the backrest portion 18 is at an angle K1 with respect to the body frame 14.
By tilting by + K2, the tilt angle can be maintained.

Thus, the buttocks rest 16 and the backrest 18
Can be set to any angle, and the inclination angle of the buttocks rest 16 with respect to the main body frame 14 can be set to any angle, so that the care receiver sitting on the buttocks rest 16 can be moved together with the buttocks rest 16. It is possible to stabilize the backrest 18 in a stable state with the backrest tilted to the rear side, and to stabilize it in a comfortable posture without pain, and there is no danger that the care receiver will fall off the backrest when moving. Can care for Further, the swinging and braking of the backrest 16 and the swinging and braking of the backrest portion 18 can be easily controlled by the control mechanism 20 so that it is excellent in operability and easy to use. The effectiveness of care for the elderly can be improved.

The backrest 18 is swingably provided by a swinging shaft 58 provided on the side of the buttocks 16 and the swinging shaft 58 is provided on an extension of the backrest 18 or a tangent line thereof. The backrest is placed out of line with respect to the extension line of the backrest so as not to be located at the center position. Therefore, when the backrest 18 is tilted alone, the backrest rests on the backrest. The caretaker's buttocks are tilted to the rear side in a state of sinking, and the head of the care receiver is shifted downward from the pillow 70 of the backrest portion 18 or the buttocks are bent forward. Therefore, the posture of the cared person can be maintained in a stable state.

As described above, the wheelchair device according to the present invention can be used in a manually operated wheelchair pushed and moved by a caregiver or an electric wheelchair provided with an electric motor or the like inside.
The rear end of the carousel and the backrest can be pivoted back and forth with respect to the main body frame to the back and braked so that the cared person can be seated in a stable state in which the cared person is tilted to the back to cause pain. You can care safely by stabilizing it in a comfortable position. Also,
The swinging and braking of the backrest and the swinging and braking of the backrest can be easily controlled by the control mechanism, which is excellent in operability and easy to use, and facilitates the care of injured and elderly people in hospitals and homes. Can be done.

[0036]

As described above, the wheelchair device according to the present invention comprises a main body frame having a rolling element pivotally supported, and a tail rest seat provided on the upper surface side of the main body frame so as to be capable of swinging back and forth and braking. A backrest provided at an edge of the rear seat and capable of swinging back and forth and being braked with respect to the rear seat. The swing and braking of the rear seat and the backrest are provided. By providing a control mechanism for controlling the swinging and braking of the rear seat, the angle between the rear seat and the backrest can be set to an arbitrary angle, and the tilt angle of the rear seat with respect to the main body frame can be set to an arbitrary angle. The caregiver seated on the buttocks rest can be seated in a stable state with the backrest tilted to the back together with the buttocks rest to stabilize it in a comfortable posture without pain. , The cared person slipped off the seat when moving It can be safely care without danger, such as. In addition, the swinging and braking of the backrest seat and the swinging and braking of the backrest can be easily controlled by the control unit, and the operability is excellent.
It is easy to use and can improve the effectiveness of nursing care for injured and elderly people in hospitals and homes.

Further, a first rocking brake device for rocking and braking the rear seat and a second rocking brake device for rocking and braking the backrest are provided. Is provided on the back side of the backrest, and includes an operation unit connected to the first and second swing braking devices. A caregiver standing on the back side can easily operate the operation unit, and can smoothly perform care using a wheelchair.

The backrest is provided so as to be swingable by a swing shaft provided on the side of the buttocks, and the swing shaft is not positioned on an extension of the backrest or on a tangent line thereof. As described above, by being provided with a misalignment on the front side with respect to the extension of the backrest portion, and further including a misalignment mounting member that is swingably connected to the swing shaft at this misalignment position, For example, when the backrest is arranged in a vertical state, the lower end of the swing shaft is located more forward than the lower end of the backrest, so that the rotation trajectory around the swing axis is closer to the horizontal direction. Is moved to move the backrest, and when the backrest is tilted rearward, the cared person leans against the back with the back resting on the backrest, and accordingly, the cared person is tilted rearward. The head of the child may slip downward from the back pillow, or the buttocks may slip forward. Without, it can hold the care posture when the back support part is tilted toward the back side in a stable state. Further, since the angle between the buttocks rest portion and the backrest portion can be set so that the cared person can maintain a comfortable posture, no pain is caused even when sitting for a long time.

The main body frame, the backrest and the backrest are provided in such a manner that they can be expanded and folded and stored in the width direction so that the angle between the backrest and the backrest can be set to an arbitrary angle. In addition, the inclination angle of the backrest seat with respect to the main body frame can be set to an arbitrary angle, and the inclination angle of the backrest can be freely set to a stable state corresponding to the care receiver. Furthermore, the main body frame and the buttrest seat can be expanded and assembled in the width direction from the folded state to be easily used, and when not in use, the main body frame and the buttrest seat can be folded and stored in the width direction to be bulky. It can be easily transported by car or the like.

The operating section includes two systems of opening and closing grip mechanisms for swinging and braking each of the buttocks rest and the backrest, and the two systems of opening and closing grip mechanisms include:
The grips are held in the same direction and are positioned close to each other. When operating the buttocks rest or backrest, grip the two systems of grips separately with both hands and hold them in close proximity. Since the operation is performed, the operation is stable, and reliable control and movement can be performed.

[Brief description of the drawings]

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

FIG. 2 is an explanatory front view of the wheelchair device shown in FIG.

FIG. 3 is a partial perspective explanatory view showing a frame of the wheelchair device.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a sectional view taken along line BB of FIG. 1;

FIG. 6 is a sectional view taken along line CC of FIG. 1;

FIG. 7 is a wheelchair tilt angle diagram in a state in which a care receiver is placed on a horizontally mounted buttrest and a backrest is tilted.

FIG. 8 is a wheelchair tilt angle diagram in which the care receiver is placed on the buttrest and the buttrest and the backrest are both tilted.

FIG. 8 is a wheelchair tilt angle diagram in a state where a backrest of a conventional wheelchair is tilted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Wheelchair apparatus 12 Rolling element 14 Body frame 16 Butt rest 18 Backrest 20 Control mechanism 58 Swing axis 60 Off-center mounting member 76 First swing brake 78 Second swing brake 80 Operating unit 88 Opening / closing grip 90 grip

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[Procedure amendment]

[Submission date] September 22, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

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

FIG. 2 is an explanatory front view of the wheelchair device shown in FIG.

FIG. 3 is a partial perspective explanatory view showing a frame of the wheelchair device.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a sectional view taken along line BB of FIG. 1;

FIG. 6 is a sectional view taken along line CC of FIG. 1;

FIG. 7 is a wheelchair tilt angle diagram in a state in which a care receiver is placed on a horizontally mounted buttrest and a backrest is tilted.

FIG. 8 is a wheelchair tilt angle diagram in which the care receiver is placed on the buttrest and the buttrest and the backrest are both tilted.

FIG. 9 shows a conventional wheelchair with a backrest tilted.
It is a chair inclination angle diagram.

DESCRIPTION OF SYMBOLS 10 Wheelchair device 12 Rolling element 14 Body frame 16 Butt rest 18 Backrest 20 Control mechanism 58 Oscillating shaft 60 Off-center mounting member 76 First swing braking device 78 Second swing braking device 80 Operation Part 88 Opening / closing grip mechanism 90 Grip

Claims (5)

[Claims] 1. A body frame on which a rolling element is pivotally supported, a buttocks seat provided on the upper surface side of the body frame so as to be capable of swinging back and forth and being braked, and a buttocks board provided at an edge of the buttocks seat. A backrest provided to be able to swing back and forth with respect to the seat and capable of being braked, and comprising a control mechanism for controlling the swinging and braking of the backrest and the swinging and braking of the backrest. Wheelchair equipment. 2. A control device, comprising: a first rocking brake device for rocking and braking the rear seat, and a second rocking brake device for rocking and braking the backrest. The wheelchair device according to claim 1, further comprising an operation unit provided on a back side of the backrest unit and connected to the first and second swing braking devices. 3. The backrest is swingably provided by a swing shaft provided on the side of the buttocks resting seat, and the swing shaft is not located on an extension of the backrest or on a tangent line thereof. And a center misalignment mounting member that is swingably connected to the swing shaft at the misaligned position in such a manner that the center misalignment mounting member is disposed forward of the extension of the backrest. Or the wheelchair device according to 2. 4. The wheelchair device according to claim 1, wherein the main body frame, the buttocks rest, and the backrest are provided so as to be freely assembled, folded and stored in the width direction thereof. 5. The operating unit includes two open / close grip mechanisms for swinging and braking each of the buttocks rest and the backrest, and the two open / close grip mechanisms have the same gripping direction. The wheelchair device according to any one of claims 2 to 4, wherein the wheelchair device is located at a position close to the wheelchair.