JPH08126666A - Tiltable wheel chair - Google Patents

Abstract

PURPOSE: To enable the securing of easier movement with a wheel chair by mounting a release lever for retaining or releasing an expansible lock mechanism near a handle provided on a back rest and further providing casters and a wheel for moving. CONSTITUTION: The rear end of a seat 1 is pivoted on a rotary plate 6 extended from the lower end of a back rest 5 and the front end of the seat 1 is pivoted on a rotary plate 9 pivoted on a leg rest 17. An expansible lock mechanism 8 allowed to retain or release in expansion is mounted between the two rotary plates 6 and 9. A release lever 13 for retaining or releasing the expansible lock mechanism 8 is mounted near a handle 12 provided on the back rest 5. Moreover, casters 4 and a wheel 18 are arranged for moving. Thus, the change of an attitude is enabled, thereby the transferring of a patient is eliminated, and moreover, the operation for altering the form of chair is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a leg rest, a seat,
The first state in which the patient is laid down on the same plane as the backrest, or the second state in which the back is raised and the knees are kept on the backrest, and further, the back is raised and the knees are kept on the backrest. The present invention relates to a rollable wheelchair that can be changed into three extended states and can move at least in the second state.

[0002]

2. Description of the Related Art A conventional wheelchair uses a folding mechanism for reducing the size in the left-right direction by folding and stacking it from the center of the left and right in order to reduce the storage space. The patient could not be in any position other than the seated position. In addition, the bed surface of the movable bed in which the patient is laid down and moved on the floor by wheels can move the bed surface up and down, but the bed surface cannot be changed to a state other than horizontal.

[0003]

Therefore, when a bedridden patient or a physically handicapped person with a disability is moved, the patient is seated on a chair or extended to a desk with his / her legs extended. After transferring from the bed to a bed that can be moved by wheels, and carrying it to the required place with this bed,
Furthermore, it must be moved to a stool or chair.

This not only causes the patient to feel the pain of moving from the bed to the bed, and from the bed to the chair or the chair, but also for the person who cares for this movement, moving from the bed to the moving bed. It had to be moved from the bed to the chair, which was a tiring task for caregivers.

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to ensure the ease of movement in a wheelchair and to make a sitting posture, a posture in which a leg is extended in a chair, Alternatively, it is an object to provide an undulating wheelchair in which various postures can be easily changed, such as when used as a bed.

[0006]

The undulating wheelchair of the present invention is intended to achieve the above-mentioned object by means of a seat on which a patient sits, a backrest for receiving the back of the patient, and a knee from the patient's knees. And a front leg of the seat is pivotally attached to a pivot plate extending from a lower end of the backrest, and a front end of the seat is pivotally attached to a pivot plate pivotally attached to the leg rest. An expansion / contraction locking mechanism capable of locking / releasing expansion / contraction is attached between the two rotating plates, and a release lever for locking / unlocking the expansion / contraction locking mechanism is attached to the backrest. It is equipped with casters and wheels for mounting in the vicinity of the handle and for moving.

Further, a gas cylinder is attached between a connecting link frame for connecting the two extension lock mechanisms and a back surface of the backrest, and a release lever for extending and contracting the gas cylinder is attached near the handle. Is desirable.

Further, a seat leg may be attached to the back surface of the seat so as to come into contact with the floor surface in a horizontal state, and the seat may be immovable when the seat is in the horizontal state. It is desirable that a locking portion is provided and a footrest can be attached thereto.

[0009]

The undulating wheelchair of the present invention is provided with a leg rest,
When the backrest is raised with the release lever operated by operating the release lever while the seat and backrest are horizontal, the legrest and seat remain horizontal and only the backrest stands up. It becomes the state of. At this time, when the seat leg is attached to the seat, the seat leg comes into contact with the floor surface, so that the seat chair does not unnecessarily move.

In the horizontal state, when the extension lock mechanism is held in the locked state without operating the release lever, the extension lock mechanism moves rearward due to the standing of the backrest, so that the leg rest is attached. Since the rotating plate rotating rotates and the legrest is tilted, the patient is in a state of a wheelchair in which the patient keeps his / her back on the backrest and the knees are bent.

Further, since the gas cylinder is provided, the operation can be performed very easily by the action of the gas cylinder when the backrest is erected, and the footrest is attached to the legrest in the state of the wheelchair. This will support the patient's foot,
The patient's foot does not touch the floor when moving.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a mechanism of an embodiment of the present invention will be described below with reference to FIGS. The seat 1 of this embodiment has a seat leg 2 attached to the lower surface thereof, which comes into contact with the floor surface when the seat 1 is in a horizontal state. A caster 4 whose rolling direction changes depending on the moving direction is attached to the rear end of the pipe 3 which is attached to both left and right sides of the seat 1 and extends rearward.

At the rear end of the seat 1, a rotating plate 6 fixedly attached to a backrest 5 is rotatably supported by a pivot shaft 7, and further slides on the left and right sides of the seat 1. An expansion / contraction lock mechanism 8 (also referred to as a mechanical lock) is provided, which can be expanded / contracted by means of the lock mechanism and can be locked / released by the slide.

The rear portion of the expansion / contraction locking mechanism 8 is rotatably attached to the lower end of the rotating plate 6, and the front end of the expansion / contraction locking mechanism 8 is rotatably attached to the front end of the seat 1. It is rotatably attached to the moving plate 9.

At the rear ends of the pair of left and right expansion lock mechanisms 8, a connecting link frame 10 for connecting the two is attached, and the lower end of the gas cylinder 11 is connected to the horizontal center of the connecting link frame 10. The upper end of the gas cylinder 11 is the center of the backrest 5 in the left-right direction, and
It is connected near the middle of the top and bottom.

On the other hand, a handle 12 for gripping and moving the backrest 5 as a wheelchair is fixed to the upper end of the backrest 5, and one side of the lower side of the handle 12 is engaged with the telescopic lock mechanism 8. Release lever 13 to release the stopped state
However, a release lever 14 for operating the gas cylinder 11 is provided on the other side.

By gripping the release levers 13 and 14 together with the handle 12, the expansion lock mechanism 8 and the expansion lock mechanism 8 are connected via the tube 15 connected to the release lever 13 and the tube 16 connected to the release lever 14, respectively. The signal is transmitted to the gas cylinder 11 to release the locked state of the expansion lock mechanism 8 and control the gas cylinder 11.

An upper end of a leg rest 17 is fixed to the rotating plate 9, and a wheel 18 is attached to a tip of the leg rest 17.
Is installed. Further, armrests 19 are rotatably attached to the left and right side surfaces of the backrest 5,
The armrest 19 is rotatable in a state parallel to the backrest 5 and at an angle of approximately 90 degrees with respect to the backrest 5. It should be noted that the lock is applied in any state.

Further, as shown in FIG. 4, a frame member 17 is provided on the outer periphery of the surface member 17a which is in contact with the lower limbs of the leg rest 17.
b is provided, and a locking hole 17c into which the supporting rod 20a of the footrest 20 can be inserted is formed on the front surface on both the left and right sides, and the convex portion 20b protruding from the supporting rod 20a is locked in the locking hole 17c. As a result, the footrest 20 can be detachably attached. A plurality of the locking holes 17c are formed, and the footrest 2
The height can be adjusted by adjusting the mounting position of 0.

Next, the modification of this embodiment is performed by changing the state of FIG. 5 in which the leg rest 17, the seat 1, and the backrest 5 are horizontal.
That is, the transition from the state of FIG. 6 at the same height as the sleeping futon F, which is easy to transfer from the futon F, to the semi-standing state of FIG. 7 will be described. In the case of this modification, the release lever 14 is gripped together with the handle 12 and the handle 1
Raise the backrest 5 in the direction of raising 2.

Then, the operation of the release lever 14 is transmitted to the gas cylinder 11 through the tube 16, whereby the gas cylinder 11 is extended by the gas pressure and can be easily moved in the direction in which the backrest 5 is raised. Also,
Since the rotating plate 6 also rotates in accordance with the standing of the backrest 5, the expansion and contraction lock mechanism 8 moves rearward, and the leg rest 17 also stands up via the rotating plate 9.

When the release lever 14 is released, the extension of the gas cylinder 11 is stopped halfway, so that the backrest 5 stands up in the state shown in FIG. 7 and becomes a semi-standup state. In this state, the projection 20b of the supporting rod 20a of the footrest 20 is inserted into the locking hole 17c of the leg rest 17, and the convex portion 20b is selected from the plurality of locking holes 17c to insert the convex portion 20b. Two
0 can be attached to the leg rest 17 while adjusting the vertical position so that the toes can be placed.

From this state, a description will be given of a change in the form of the united state in the backrest standing position shown in FIG. 8, that is, when the chair is used as the wheelchair shown in FIG. In this case as well, the handle 12
Hold the release lever 14 together with and raise the backrest 5 further. Also in this case, the release lever 13 is not gripped as in the above.

Therefore, similarly to the above, the backrest 5 is further erected by the gas cylinder 11, and the legrest 17 also approaches the erected state accordingly. Further, at this time, if the armrest 20 is rotated forward, the armrest 20 keeps a horizontal state, so that the elbow is placed on the armrest 20 as shown in FIGS.
As you can see, you can work together around a wheelchair or table.

Further, from the state of FIG. 5 and FIG. 6 in which the leg rest 17, the seat 1 and the backrest 5 are horizontal, the form of the seat chair of FIG. 11, that is, the state of cooperation around the seat table of FIG. The transition to is explained. In this case, the backrest 5 is raised while gripping both the release levers 13 and 14 together with the handle 12.

When the release lever 14 is gripped, the gas cylinder 11 raises the backrest 5 in the same manner as described above. Is released.

As a result, even if the entire telescopic lock mechanism 8 moves rearward as the backrest 5 stands up, the telescopic lock mechanism 8 is unlocked, so the telescopic lock mechanism 8 is retained.
Does not move backward so that the pivot points of the rotating plate 9 and the expansion / contraction locking mechanism 8 are extended. Therefore, since the rotating plate 9 does not rotate, the leg rest 17 maintains the horizontal state.

At this time, as shown in FIGS. 8 to 10, the armrest 19 can be rotated forward so that the elbow can be placed on the armrest 19 by its lock. In this posture, the footrest 20 on which the foot is placed is necessary. There is no need to attach it to the leg rest 17 as it does not.

In the above-described embodiment, the seat leg 2 is attached to the seat 1 so that the seat leg 2 is kept in a horizontal state, that is, in a sleeping state and a seat chair state. The seat leg 2 is not always necessary although it does not come in contact with the floor surface and moves unintentionally.

Further, in this embodiment, the gas cylinder 11 is connected between the backrest 5 and the connecting link frame 10 to facilitate the erecting of the backrest 5. 11 is not always necessary.

[0031]

As described above, the present invention provides a legrest,
As the seat and backrest can be placed in a horizontal bed, it can be used as a bed for the disabled person with a handicapped person to sleep normally, and a futon laid on another floor is usually used. Even when the bed is in a bed, the bed can be easily transferred to the undulating wheelchair of the present invention.

Since this bed state can be converted to a semi-reclining reclining posture, it can be adapted for viewing and reading on TV, and further standing up or with the legs extended. The casters and wheels can be moved as a wheelchair, and the posture of the wheelchair can be changed so that the patient does not need to be transferred and the shape change operation is easy.

Therefore, since it becomes possible to easily enjoy a conversation around the table or table, the lack of conversation with the patient is eliminated, and the patient's condition can be known from the conversation, which gives the patient a feeling of loneliness. In addition, it is possible to prevent the treatment from being too late.

[Brief description of drawings]

FIG. 1 is a side view showing, in an enlarged view, a part of an embodiment of the present invention in a backrest standing state.

FIG. 2 is a side view showing the tube as a solid line with the same as the bed state.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a cross-sectional view of a footrest and a legrest before assembling.

FIG. 5 is a side view showing a bed state in which the patient is lying down.

FIG. 6 is a side view showing a state in which the patient is transferred next to the futon on which the same is laid.

FIG. 7 is a side view in which FIG. 5 is converted into a semi-standing state.

FIG. 8 is a side view in which FIG. 5 is converted to a standing state.

9 is a side view of the wheelchair shown in FIG.

10 is a side view of the table shown in FIG. 8 when the table is surrounded.

FIG. 11 is a side view in which FIG. 5 is converted into a seat chair state.

FIG. 12 is a side view showing a state in which the table is surrounded in the state of FIG. 11.

[Explanation of symbols]

 1 seat 2 seat leg 4 caster 5 backrest 6 rotating plate 8 expansion / contraction lock mechanism 9 rotating plate 11 gas cylinder 13 release lever 14 release lever 17 leg rest 18 wheels 19 armrest 20 footrest

Claims (4)

[Claims] 1. A seat on which a patient sits, a backrest for receiving the patient's back, and a leg rest for receiving the patient's knees below, the rear end of the seat extending from the lower end of the backrest. The seat is pivotally mounted, and the front end of the seat is pivotally mounted on a pivot plate pivotally mounted on the leg rest, and an extension lock mechanism capable of locking and releasing extension is attached between the two pivot plates. And a release lever for locking and unlocking the telescopic lock mechanism is mounted in the vicinity of the handle mounted on the backrest, and further equipped with casters and wheels for movement. Wheelchair. 2. A gas cylinder is attached between a connecting link frame connecting the two extension lock mechanisms and a back surface of the backrest, and a release lever for attaching and retracting the gas cylinder is attached near the handle. The undulating wheelchair according to claim 1, characterized in that: 3. A seat leg, which comes into contact with the floor surface in a horizontal state of the seat, is attached to the back surface of the seat,
The undulating wheelchair according to claim 1, wherein the seat is immovable when in a horizontal state. 4. The undulating wheelchair according to claim 1, wherein a locking portion is provided on the leg rest, and a footrest can be attached to the locking portion.