JPH05176958A - Wheelchair - Google Patents

Abstract

PURPOSE:To apply the wheelchair to a door opening/closing type bathtub by providing a turning means for turning a foot placing part so that a relative angle to a chair frame of the foot placing part becomes larger than a relative turning angle to a chair frame of a chair base part, when the chair base part turns. CONSTITUTION:When a chair base part 24 is turned clockwise by a prescribed quantity to a chair frame 12 centering around a supporting shaft 13 by extending a hydraulic cylinder 32 of a chair base part turning means 28, a shaft 26 of an oscillation tip part of the base part 24 is also turned. By following it, arms 43, 44 of a foot placing part increase angle turning means 29 are turned to a position of a two-point chain line, respectively, and a foot placing part 25 is turned in a state that it is increased by a prescribed quantity, compared with a turning angle of the base part 24. Accordingly, although a turning angle of a back rest part 22 and a seated part 23 is a little, the turning angle of the foot placing part 25 becomes large. In such a way, a chair main body 14 can be positioned in the upper position than the lower end line L of an opening part provided at the height of about half a side wall of a door opening/closing type bathtub.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair used, for example, when bathing in a door opening / closing bathtub.

[0002]

2. Description of the Related Art As a bathtub for persons with physical disabilities, a so-called openable-closed bathtub has been developed which has an opening on the side wall of the bathtub and which is opened and closed by a door which slides in the vertical direction. ing. However, in this type of bathtub, the opening on the side wall reaches near the bottom of the bathtub, and when a person with a physical disability is transferred into the bathtub or conversely from the bathtub to the washroom, Most of the amount of hot water stored in the tank must be transferred to a tank provided in the vicinity of the bath, which has a drawback that the bathing time becomes substantially long.

[0003]

Therefore, the applicant of the present invention is
Keep the opening provided on the side wall at about half the height of the side wall,
As a result, the bathing time could be shortened to about half of the conventional time.
Created a new door opening and closing bathtub, and first applied for Japanese Patent Application No. 3-2498
Submitted as No. 70.

By the way, in order to take a bath using the above-mentioned novel door-opening type bathtub, the physically handicapped person is transferred into the bathtub by using the opening provided on the upper side of the side wall approximately half the height. There was a need for a new wheelchair that could be applied to such a special bathtub.

The present invention has been made in view of the above circumstances, and provides a novel wheelchair that can be applied to a door opening / closing bathtub in which the opening provided in the side wall is approximately half the height of the side wall. ..

[0006]

In order to achieve the above object, the present invention provides a traveling carriage with wheels, a chair frame slidably provided on the traveling carriage in a horizontal direction,
A chair body mounted on the chair frame so as to be rotatable about a support shaft along a vertical plane, the chair body comprising:
A chair base portion having a backrest portion and a seating portion and a foot rest portion are separately configured, and the foot rest portion is attached rotatably around an axis extending in a horizontal direction with respect to the chair base portion. Is provided with a chair base rotating means for forcibly rotating the chair base relative to the chair frame along a vertical plane, and the chair base is provided between the footrest and the chair frame. When rotating, the relative angle of the foot rest with respect to the chair frame is larger than the relative rotation angle of the chair base with respect to the chair frame,
It is characterized in that a footrest increasing angle rotation means for forcibly rotating the footrest is interposed.

[0007]

In order to bathe a physically handicapped person using the wheelchair of the present invention, for example, as described in the conventional example, a door opening / closing bathtub in which the opening provided in the side wall is kept at about half the height of the side wall. The wheelchair according to the present invention is placed at a predetermined position in the vicinity, and the door of the bathtub is opened.

Then, the chair base rotating means is driven to forcibly rotate the chair base at a predetermined angle with respect to the chair frame. At this time, as the chair base rotates, the footrest increasing angle rotation means operates, and the relative angle of the footrest with respect to the chair frame is greater than the relative rotation angle of the chair base with respect to the chair frame. The footrest is forcibly rotated so that

Therefore, although the turning angle of the backrest portion and the seating portion is small, the turning angle of the footrest portion becomes a large value. In this way, since the footrest portion at the lowest position among the members forming the chair body can be largely swung and tilted and swung up high, the chair body is
It can be positioned above the height of the upper surface of the traveling carriage.

In this state, the chair body on which the bather is seated is slid together with the chair frame to the bathtub side, so that the opening for the physically handicapped person is limited to about half the height of the side wall. It is possible to enter the bath with the door open / close type and put it in a bathing state.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 2, reference numeral 1 denotes a door opening / closing bath having an opening 2 on the above-mentioned side wall, the opening 2 remaining at about half the height of the side wall.

The door opening / closing tub 1 is provided with a chair support 3 having a pantograph structure therein, and a rail base 4 constituting the chair support 3 is operated to be lifted and lowered by a hydraulic cylinder 5 below. In addition, a tank (not shown) is connected to the door opening / closing bathtub 1, and when the bather is transferred into the bathtub 1 or vice versa, the bather door 5 is opened when the bather is taken out of the bathtub 1. When opening, the hot water in the bathtub 1 is transferred to this tank.

Reference numeral 10 is a wheelchair according to the present invention. This wheelchair 10 includes a traveling carriage 11 with wheels and an elevating mechanism, a chair frame 12 provided on the traveling carriage 11 so as to be slidable in the horizontal direction, and a vertical support shaft 13 vertically arranged on the chair frame 12. A chair body 14 rotatably mounted along the surface.

As shown in FIG. 1, the traveling carriage 11 has a lower frame 11a having leg portions 15 ... Upper frame 1 to which a rail 17 for slidably supporting the chair body 14 is attached
1b and. Elevating means 18 for vertically moving the upper frame 11b is interposed between the upper frame 11b and the lower frame 11a. The lifting means 18 is X
It is composed of a link 18a assembled in a character shape and a hydraulic cylinder 18b for adjusting an angle formed by both bars forming the link. The links 18a are provided on the left and right sides of the traveling carriage 11, respectively.

On the upper part of the upper frame 11b, there is provided a well-known rotation lock mechanism 20 for fixing the chair frame 12 traveling on the rail 17 together with the chair body 14 at a predetermined position, and the side portion of the lower frame 11a. When the wheelchair 10 is adjacent to the side portion of the bathtub 1, a locking portion 21 that abuts on a guide provided on the side portion of the bathtub and relatively positions the two is attached to the wheelchair 10.

The chair frame 12 is formed in a quadrangular shape in a plan view having substantially the same shape as the traveling carriage 11, and wheels 19 traveling on rails 17 on the traveling carriage 11 are attached to lower portions of front and rear ends thereof. Has been. The support shaft 13 that rotatably supports the chair body 14 is attached to the center of the chair frame 12.

The chair body 14 is composed of a chair base 24 to which the backrest 22 and the seat 23 are attached and a foot rest 25 which are separate members, and the foot rest 2
The reference numeral 5 is attached to the chair base 24 so as to be rotatable about a shaft 26 extending in the horizontal direction.

Further, the chair base 24 has the chair base 24.
A chair base rotation means 28 for forcibly rotating the chair frame 12 relative to the chair frame 12 along the vertical plane is continuously provided, and the footrest portion 25 and the chair frame 12 are also provided.
In between, the footrest is forcibly rotated so that the relative rotation angle of the footrest with respect to the chair frame 12 is larger than the relative rotation angle of the chair base 24 with respect to the chair frame 12. The foot rest increasing angle rotation means 29 is interposed.

The chair base rotating means 28 has a bracket 31 attached downward from the chair base 24, and a hydraulic cylinder 32 is attached in an upright state to the upper frame 11b of the traveling carriage 11 so as to correspond to the bracket 31. It has been configured. Then, when the hydraulic cylinder 32 extends with the chair body 14 set at the regular position on the traveling carriage 11, the tip of the piston rod of the hydraulic cylinder 32 presses the lower surface of the bracket 31 to move the chair base 24. The support shaft 13 is forcibly rotated about the center. It should be noted that the hydraulic cylinder 32 is controlled so as to immediately return to the original state, that is, the shortened state, after being stretched and once rotating the chair base 24.

Further, the chair base rotating means 28 is provided with a lock mechanism 34 for locking the chair base 24 at a position rotated by a predetermined angle as shown by a chain double-dashed line in FIG. As shown in FIGS. 5 and 6, the lock mechanism 34 includes a lock hydraulic cylinder 36 provided between the horizontal bar 12a supported by the chair frame 12 and the horizontal bar 24aa on the chair base frame 24a side. Hydraulic cylinder 3
6, an oil supply cylinder 37 for supplying oil to 6 and a ring-shaped conduit 38 for connecting the two hydraulic cylinders 36, 37
And a one-way valve 39 and a sluice valve 40 that are manually operated.

In the lock mechanism 34, when the hydraulic cylinder 32 extends and the chair body 12 rotates about the shaft 13 as described above, the hydraulic cylinder 36 also tries to extend as shown in FIG. At this time, the hydraulic cylinder 36
The capacity of the oil chamber 36a is expanded, but oil is allowed to flow into the oil chamber 36a through the one-way valve 39 by the action of the piston 37aa which is biased in the position direction by the spring 37a in the hydraulic cylinder 37. Supplied. Therefore, there is no hindrance to the extension of the hydraulic cylinder 36. Once the oil is supplied to the oil chamber 36a, the one-way valve 39 moves to the hydraulic cylinder 36.
Since the structure prevents the oil from flowing from the hydraulic cylinder 35 to the hydraulic cylinder 35 side, as long as the sluice valve 40 is closed, the oil does not flow back and forth in the conduit 38. Eventually, the lock hydraulic cylinder 36 is maintained in the extended state.

After that, when the sluice valve 40 is switched to the open state, the hydraulic cylinder 3 for locking the oil as shown by the arrow in the drawing passes through the side of the pipe line 38 in which the sluice valve 40 is interposed.
6 flows to the hydraulic cylinder 37 side for supplying hydraulic pressure, so that the locked state is released and the hydraulic cylinder 3
6 can be shortened freely.

On the other hand, the footrest angle increasing / rotating means 29 are provided on the left and right sides of the chair frame 12, and one end of the first arm 43 is pin-connected to the bracket 42 extending from the chair frame 12. , One end of the second arm 44 is pin-coupled to the other end of the first arm 43,
The other end of the second arm 44 is fixed to the shaft 26 integrally attached to the footrest 25 at a predetermined angle.

The second arm 44 is provided with a foot rest 25.
It may be directly fixed to the shaft and pin-connected to the shaft 26. In this case, the shaft 26 is free to rotate with respect to the foot rest 25. Reference numeral 50 indicates a lock pedal for locking the casters.

Next, description will be given of a case where a person with a physical disability is allowed to bathe in a door-opening / closing bathtub using the wheelchair having the above-mentioned structure.

For bathing, first, about half of the amount of hot water in the bath 1 is transferred to a tank (not shown), and the door 5 is opened in this state. Then, the wheelchair 10 on which the physically handicapped person is placed is positioned using the locking portion 21 so as to match the side wall opening 2 of the bathtub. At this time, if necessary, the elevating means 18
By operating the hydraulic cylinder 18b of the chair body 1 so that the rail 17 on the traveling carriage 11 is aligned with the rail 4 on the bathtub side.
Adjust the height of 2.

Next, a switch (not shown) is operated to extend the hydraulic cylinder 32 of the chair base rotating means 28 to rotate the chair base 24 about the support shaft 13 in the clockwise direction in FIG. At this time, as the chair base 24 rotates, the lock hydraulic cylinder 36 interposed between the chair frame 12 and the chair base extends, and at the same time, the lock hydraulic cylinder 36 is moved to the oil chamber 36a of the hydraulic cylinder 36. Oil is supplied from 37 via a one-way valve 39. As a result, as described above, the hydraulic cylinder 36 is held in the expanded state. That is, the chair base 24 is locked while being rotated by a predetermined amount. The gate valve 40 is switched to the closed state in advance.

On the other hand, when the chair base 24 is rotated relative to the chair frame 12 by a predetermined amount as described above, the chair base 2
Similarly, the shaft 26 existing at the oscillating tip of No. 4 also rotates, and following this, the first arm 43 and the second arm 44 respectively rotate as indicated by the two-dot chain line in FIG. , The footrest 25 is rotated with a predetermined angle larger than the rotation angle of the chair base 24.

Therefore, the backrest 22 and the seat 23
Although the rotation angle of the
The rotation angle of 5 has a large value, and as a result, the chair body 1
4 can be located above the lower end line L of the opening 2 provided at approximately half the height of the side wall of the openable door tub (see FIG. 1).

In this state, the chair body 14 on which the bather is seated is slid to the bathtub side together with the chair frame 12.
Wheels 19 are used for traveling carriage 11 and rails 17 and 4 of bathtub 1.
By running along the top, a bather can be positioned in the bathtub.

Thereafter, the hydraulic cylinder 5 is operated to lower the chair receiver 3 in the bathtub, so that the physically handicapped person can be put in a bath state.

Next, when taking a bath for a physically handicapped person,
The cylinder 5 in the bathtub is operated again to raise the chair support 3 so that the rail base 4 in the bathtub has the same height as the rail 19 of the traveling carriage.

Then, the chair body 14 is replaced with the chair frame 12
The whole is slid to the traveling carriage 11 side. This makes it possible to take a bath.

Thereafter, when the physically handicapped person is moved to another room, the sluice valve 40 is switched to the open state and the cylinder 3
The oil in the oil chamber 35a of No. 5 is returned to the oil chamber of the hydraulic cylinder on the supply side via the pipe 38. At this time, a physically handicapped person is riding on the chair base 24, and the chair base 24 receives a force for rotating the chair base 24 counterclockwise in FIG. That is, it receives a force that shortens the hydraulic cylinder 36. Therefore, the oil in the hydraulic cylinder 36 on the lock side can be returned to the inside of the cylinder 37 against the spring 37a through the conduit 38 which is switched to the open state. As a result, the chair base portion 24 and the footrest portion 25 are simultaneously returned to their original angular positions.

Needless to say, the wheelchair 10 is not limited to being used for a door opening / closing bathtub, but may be used for other purposes.

[0036]

As described above, according to the wheelchair of the present invention, the chair base pivoting means pivots the chair main body by a predetermined angle, and the foot rest is rotated by the chair base pivoting angle and the chair base. It is possible to automatically rotate only the angle that is combined with the rotation angle that is relatively rotated with respect to
The chair body can be set higher than the upper height of the traveling carriage. Therefore, for example, a physically handicapped person or the like on a chair can be transferred into the bath even from an opening provided on the upper side of the side wall of the door-opening / closing bath approximately half the height.

[Brief description of drawings]

FIG. 1 is a side view of a wheelchair according to the present invention.

FIG. 2 is a perspective view for explaining a bathing state in a door opening / closing bathtub using a wheelchair.

FIG. 3 is a front view of a wheelchair.

FIG. 4 is a plan view of a wheelchair.

FIG. 5 is a detailed view of a lower portion of the chair base.

FIG. 6 is a sectional view of a lock mechanism.

[Explanation of symbols]

 1 ... Door open / close bathtub 2 ... Opening part 5 ... Door 10 ... Wheelchair door 11 ... Traveling vehicle 12 ... Chair frame 13 ... Support shaft 14 ... Chair body 22 ... Backrest part 23 ... Seating part 24 ... Chair base part 25 ... Foot rest part 26 ... Shaft 28 ... Chair Base Rotating Means 29 ... Footrest Increasing Rotating Means 34 ... Lock Mechanism 36 ... Hydraulic Cylinder for Locking

Claims (1)

[Claims] 1. A traveling carriage with wheels, and a chair frame provided on the traveling carriage so as to be horizontally slidable,
A chair main body mounted on the chair frame so as to be rotatable about a support shaft along a vertical plane. The chair main body includes a chair base including a backrest and a seat, and a foot rest. In addition, the foot rest is attached to the chair base so as to be rotatable about an axis extending in the horizontal direction, and the chair base is forced to the chair frame along a vertical plane. A chair base rotation means for relatively rotating the chair base, and a relative rotation angle of the chair base with respect to the chair frame between the footrest and the chair frame when the chair base rotates. In comparison with the chair frame, a footrest increasing mechanism for forcibly rotating the footrest is interposed so that the relative angle of the footrest with respect to the chair frame becomes larger. Wheelchair to do.