JP2002028186A - Wheelchair allowing reseating on toilet stool while still on the wheelchair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a person on a wheelchair having difficulty in walking cannot change from the wheelchair to a toilet stool by himself/ herself and needs the help of a helper every time he/she goes to the lavatory. SOLUTION: This wheelchair is provided with a seat 30 for placing a hip part Ma of the occupant on a seat surface part 3 and a kneerest 6 for placing knees Mb, a seat back plate 40 is vertically slidingly arranged in a seat back part 4 to a seat frame 11, the seat 30 can slide between a seating position and a rear retreat position, the kneerest 6 can move between a knee support position above an upper surface of the seat 30 and the retreat position below a seat surface of the toilet stool T, the kneerest 6 and the seat back plate 40 can be vertically moved by a lift device 7, and in a state of straddling the wheelchair on the toilet stool T, the wheelchair occupant can be respectively transferred between the seat 30 and the kneerest 6 and between the kneerest 6 and the seat surface of the toilet stool T by operating the lift device 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheelchair used by a person who is unable to walk, and more particularly to a wheelchair which can be replaced with a toilet while sitting on a seat.

[0002]

BACKGROUND OF THE INVENTION Wheelchairs are an important means of transportation for those who are unable to walk, but patients who cannot get in and out of their own wheelchairs may feel more depressed when boarding a wheelchair. He asked the caregiver to sit down on a toilet or toilet bowl, complete the toilet there, and then put him in a wheelchair again.

[0003] By the way, for patients who cannot walk,
Having a caregiver take care of the stool is a very burdensome mental liability. In addition, the caregiver is bound by a great deal of time in caring for the patient's stool, and must hold and transfer the patient between the wheelchair and the toilet, which is a great deal of time for each patient's stool. It required effort. As described above, at present, the treatment of stool for a patient who is unable to walk is imposed on both the patient and the caregiver with a high mental and physical burden.

In recent years, as shown in, for example, Japanese Patent Application Laid-Open No. H8-308878, a wheelchair with a toilet has been proposed in which a toilet is provided below the seating surface of the wheelchair so that the user can use the toilet while sitting on the wheelchair. I have. In this known wheelchair with a toilet, a large toilet hole is formed in the seat surface portion so that the toilet can be used in the toilet below.

[0005]

However, the above-mentioned known wheelchair with a toilet (JP-A-8-30878) has the following problems. That is, in this known wheelchair, since a large hole for toilet is always opened in the seat surface, there is a problem that the sitting comfort is very poor for the occupant. On the other hand, for the caregiver, the excrement in the toilet must be treated (withdrawing the toilet → removing the excrement → washing the toilet → resetting) each time, and the physical (temporal) and There is a problem that the mental (disposal of waste) burden is large. In addition, when excrement remains in the toilet, the odor is radiated to the surroundings, and an unpleasant feeling of sitting above the waste is generated.

In view of the circumstances described above, the present invention has been made so that a person with a disability can go to a toilet by himself / herself in a wheelchair, and change his / herself from a wheelchair to a toilet bowl to use a wheelchair. It is an object of the present invention to provide a wheelchair that can be used while sitting on a toilet bowl.

[0007]

The present invention has the following structure as means for solving the above-mentioned problems. still,
The present invention is directed to a wheelchair which is provided with wheels 2, 2 on the left and right sides of a seat portion 1 having a seat surface portion 3 and a backrest portion 4 and can straddle a Western-style toilet T, as exemplified in the accompanying drawings. I have to. Further, the wheelchair of the present application may be an electric traveling type or a manually traveling type in which a hand rim is manually rotated.

[0008] The wheelchair of the present invention has a seat portion 3 thereof.
In addition, a seat 30 on which the buttock Ma of the occupant is placed and a knee rest 6 on which the knee Mb is placed in front of the front edge of the seat 30 are provided. Further, the backrest portion 4 is provided with a backrest plate 40 slidable up and down with respect to the seat frame 11.

The seat seat 30 slides between a seating position with respect to the seat frame 11 and a retracted position where the seated position can be opened and the buttocks Ma can be lowered downward (a retracted position behind or beside the seated position). Installed as possible. The seat 30 is slid in a state where the occupant is lifted from the seat, as will be described later. The sliding operation of the seat 30 may be performed manually or by an electric driving device.

[0010] The knee rest 6 is provided for the seat 3 in the seated position.
It is installed so as to be movable between a knee supporting position above the upper surface height of 0 and a retreat position below the seat surface height of the toilet T. The knee rest 6 can support both right and left knees of the occupant at the same time.

The knee rest 6 and the backrest plate 40 can be moved up and down by a lift device 7, respectively. The lift device 7 is of an electric type that is operated by a battery power supply, and stops the up-side operation and the down-side operation with a limiter. The lift device 7 may operate the knee rest 6 and the backrest plate 40 with a slight time difference.

In the wheelchair of the present invention, the toilet T
By operating the lift device 7 while being laid on the upper side, the wheelchair occupant is moved between the seat seat 30 and the knee rest 6 and between the knee rest 6 and the seat surface of the toilet T, respectively. It can be replaced.

That is, when a passenger in a wheelchair wants to take a flight, the following operation is performed. First, the user moves to the toilet while riding on a wheelchair, and stops there at a position where the wheelchair is straddled on the toilet T (Western toilet). Next, when the lift device 7 is operated to the up side, the knee rest 6 and the backrest plate 40 are respectively moved upward, and the occupant's both knees and back are supported by the knee rest 6 and the backrest plate 40, respectively. The buttocks Ma of the person are lifted from the seat 30. In this state, since both knees are hung on the knee rest 6 and the large area of the back is pressed against the backrest plate 40, the buttocks Ma do not slip down without applying much force.
In this manner, in a state where the buttocks Ma are lifted from the seat 30 in this manner, the clothing (trousers, skirt,
If the pants are shifted to the knee side, the undressing operation can be performed relatively easily. Next, with the occupant's hips lifted, the seat 3
Slide 0 to the retracted position. In this manner, in a state where the seat 30 is slid to the retracted position (the rear or side of the seating position), the portion of the seat surface 3 corresponding to the seat surface of the toilet T is completely open. Subsequently, when the lift device 7 is operated to the down side, the knee rest 6 and the backrest plate 40 move downward, and the buttock M of the occupant is lowered.
a sits on the seat surface of the toilet T. Then, in this state (the state in which the buttocks Ma are seated on the seat surface of the toilet T), the toilet is finished, and then the lift device 7 is operated to the up side. Then, the knee rest 6 and the backrest plate 40 move upward, and once lift the occupant to the uppermost movement position. At this time, the occupant has both knees supported by the knee rest 6 and his back pressed against the backrest plate 40, so that the body does not slip down. In this state, the buttocks Ma are located at a position higher than the height of the upper surface of the seat 30. At this time, the shifted clothes are returned to the original. Next, the seat 30 in the retracted position is slid to the seated position. The sliding operation of the seat 30 is performed as follows.
It can be done manually, but an electric drive can also be used. Thereafter, when the lift device 7 is operated to the down side to return the knee rest 6 and the backrest plate 40 to the normal position (the use position during traveling), the buttocks Ma of the occupant are seated on the seat 30 and a series of operations are performed. Is completed.

As described above, in the wheelchair of the present invention, the occupant can take a flight by himself while riding the wheelchair,
There is no need for assistance by a caregiver during stool service.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wheelchair according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 to 3, the wheelchair of this embodiment is provided with a pair of wheels 2, 2 on the left and right sides of a seat 1 having a seating surface 3 and a backrest 4, and moves over a Western-style toilet T. It can be straddled.

As shown in FIGS. 4 and 5, the seat frame 11 of the seat portion 1 is formed in the backrest portion 4 in a rectangular frame shape by the left and right side frames 12, 12, the upper frame 13, and the lower frame 14. ing.

Each of the wheels 2 and 2 has a left and right wheel frame 2.
It is attached to each outside of 1,21. Each of the wheel frames 21 and 21 has an extending portion extending forward, and auxiliary wheels 23 and 23 are attached to the tip of the extending portion 22, respectively. As shown in FIG. 2, there is an interval between the wheel frames 21 and 21 so that the Western-style toilet bowl T can be straddled.

The seat 3 has a seat 30 on which a passenger sits.
And left and right armrests 5, 5 and kneerests 6, 6 for supporting the left and right knees Mb.

The seat 30 has a seat plate 33 attached to the upper surface of a frame 31. And this seat 30
Is installed so as to be able to slide back and forth with respect to the seat frame 11. That is, as shown in FIGS. 4 and 5, two guide rollers (front guide rollers 34, 34, 34. Rear guide roller 35,
35), the left and right side frames 32, 32 (FIG. 5) of the seat 30 are sandwiched between a pair of front and rear guide rollers 34, 34, 35, 35, respectively, from above and below.
The seat seat 30 has a front seating position shown in FIGS. 1, 3, 4, 6, and 7 with respect to the seat frame 11, and a rear evacuation position shown in FIGS. It can slide back and forth between. 8 to FIG.
As shown in FIG. 0, when the seat 30 is slid to the rear evacuation position, the lower part of the seating position is largely opened without any obstacle, so that the buttocks Ma of the wheelchair occupant can move up and down through the opening. Has become. In this embodiment, the occupant manually slides the seat 30 back and forth. However, an electric slide drive device is incorporated so that the seat 30 can be slid back and forth by a switch operation. You may. Also, in this embodiment,
A seat sensor 36 for detecting a sliding position of the seat 30 is provided, and the sliding position of the seat 30 is detected by the sensor 36 so that a lift device 7 described later is provided.
(Electricity to the motor 71) is controlled to prohibit the dangerous side operation.

Each of the left and right armrests 5 and 5 has a lower longitudinal bar 51, a substantially L-shaped upper lateral bar 52 and a rear longitudinal bar 5 respectively.
3 are formed in a substantially trapezoidal shape. The armrests 5 and 5 are arranged on the left and right outer sides of the seat frame 11, and the lower end of the rear side of each armrest is attached to the lower end of each of the hanging pieces 85 and 78 connected to a free slider 74 described later. (Located on the axis) 55, 55, and the rear upper end of each armrest is connected by a connecting rod 54 facing left and right. Therefore, in each of the armrests 5, 5, the front side of the armrest can be vertically turned around the pivotal connection portion (each shaft 55, 55). The armrests 5, 5 respectively connect link pieces 57, 77 between the lower bars 51, 51 and slide cylinders 77, 77 connected to a screw slider 73 described later.
The posture is maintained by the connection at 57. Note that the armrests 5 and 5 are rocked up and down or slid up and down by a lift device 7 described later, and the movement will be described in detail later.

The knee rests 6, 6 are, for example, 50 to 6 in diameter.
Rolls having a length of about 0 mm and a length of about 100 to 120 mm are employed. These roll-shaped knee rests 6, 6
The armrests 5, 5 are attached to the front ends of the lower bars 51, 51, respectively, in an inward state. As shown in FIGS. 1, 3, 4, 6, and 7, the knee rests 6, 6 are located on the front side of the front edge of the seat 30 at the sitting position (front slide position). Each of the knee rests 6 can move up and down on the front side of the front edge of the seat 30.

The backrest 4 of the seat 1 has a frame 4
A backrest plate 40 having a cushion plate 42 attached to the front surface of the vehicle 1 is provided. The backrest plate 40 is provided so as to be slidable up and down with respect to the seat frame 11, and is slid up and down by a lift device 7 described later.

The armrests 5, 5 and the backrest plate 40
The lift device 7 is moved up and down by the lift device 7, and the lift device 7 is configured as follows. That is, as shown in FIG. 4 and FIG. 5, the lift device 7 rotates the lift screw 72 rotatably supported between the upper frame 13 and the lower frame 14 of the seat frame 11, and rotates the lift screw 72. The motor includes a motor 71, a screw slider 74 screwed to the lift screw 72, and a free slider 76 that is freely fitted to the lift screw 72 above the screw slider 74.

The lift screw 72 is installed vertically at the center of the seat frame 11 in the left-right direction. And
The lift screw 72 can be rotated in both forward and reverse directions by a motor 71. The motor 71
Can be performed by a hand switch (not shown).

As shown in FIG. 5, the right and left slide cylinders 75 are integrally connected to the screw slider 74. The free slider 76 is also integrally connected to two slide cylinders 77, 77 on the left and right sides. The slide cylinders 75, 75 on the screw slider 74 side and the slide cylinders 77, 77 on the free slider 76 side are at the same vertical position near the left and right ends of the seat frame 11.

On the other hand, the upper frame 1 of the seat frame 11
Two guide bars 73, 73 are interposed in parallel with the lift screw 72 near the left and right end portions between the lower frame 3 and the lower frame 14. Each of the slide cylinders 75, 75 on the screw slider 74 side and each of the slide cylinders 7 on the free slider 76 side.
7, 77 are respectively fitted to guide rods 73, 73 on each side in a vertically free state. In the following description, the screw slider 74 and the respective slide cylinders 75, 75 connected thereto are referred to as a lower elevating body A, and the free slider 76 and the respective slide cylinders 77, 77 connected thereto are disposed on the upper side. It may be called a lifting body B.

Each slide cylinder 7 on the screw slider 74 side
5,75 and the lower sticks 5 of the left and right armrests 5,5
1, 51 are connected by link pieces 57, 57, respectively. That is, the upper ends of the link pieces 57, 57 and the slide cylinders 75, 75 are pivotally supported by the shafts 58, 58, and the lower ends of the link pieces 57, 57 and the lower bars 5 of the armrests 5, 5 are provided.
1 and 51 are pivotally supported by shafts 59 and 59.

On the other hand, a frame frame 41 of the backrest plate 40 is fixed to each of the slide cylinders 77, 77 on the free slider 76 side, and the upper elevating body B and the backrest plate 40 move up and down integrally. It has become. Further, hanging pieces 78, 78 are integrally attached to the respective slide cylinders 77, 77 on the free slider 76 side downward. The lower ends of the hanging pieces 78, 78 and the rear ends of the lower bars 51, 51 of the armrests 5, 5 are pivotally connected by shafts 55, 55, respectively.

The lower elevating body A and the upper elevating body B are disengaged by the disengagement mechanism 8 as shown in FIGS. 3 to 6 and 10, or linked to each other as shown in FIGS. It is possible to do. That is, as shown in FIG. 4 and FIG.
8 and 78, catchers 81, 81 are attached to the slide cylinders 75, 75 of the lower elevating body A, respectively.
Projecting catch points 82, 82 for locking
And two upper and lower unlocking bars (upper unlocking bars 83, 83) for unlocking the catchers 81, 81.
The lower lock release bar 85) is provided. The upper lock release bar 83 is swung back and forth by a solenoid 84. The solenoid 84 is connected to the upper lifting body B
Activated by a position sensor 86 attached to the sensor. The lower lock release bar 85 is fixed at a fixed position.
The function of the engagement / disengagement mechanism 8 will be described later in a method of using a wheelchair.

A cover 15 is provided on the rear surface of the seat frame 11.
Is installed. A window hole 16 through which the seat 30 protrudes and retracts is formed in a rear surface portion of the cover 15, and both armrests 5 and 5 are provided in a side surface portion of the cover 15.
A window hole 17 for moving the fifth connecting rod 54 is formed. Furthermore, left and right side frames 1 of the seat frame 11
2 and 12 include shafts 58 on the upper side of the link pieces 57 and 57,
A window hole 18 (see FIG. 1) for moving up and down 58 is formed.

The wheelchair of this embodiment is used as follows. First, normal traveling is performed in the state shown in FIG. 3. In the state shown in FIG. 3, the seat 30 is in the seating position on the front side, the lower lifting body A is located at the intermediate height, and the upper lifting body B
Is located above the lower lifting / lowering body A by a predetermined height. In this state, the armrest 5 is maintained in a substantially horizontal posture, and the knee rest 6 is located below the seat 30. Further, the backrest plate 40 is located at an intermediate position in the vertical movement range. Also, the catcher 81 of the disengagement mechanism 8
Are locked by the upper lock release bar 83 and are in the non-engagement posture.

When the wheelchair occupant M wants to use the vehicle while riding in a wheelchair, the following operation is performed. (1) First, the user moves to the toilet while riding in a wheelchair, and stops the wheelchair at a position where the wheelchair is straddled on the toilet T (Western toilet) T. (2) Next, the hand switch is operated to operate the lift device 7 upward (the lift screw 72 is rotated clockwise by the motor 71 when viewed from above). After operating the hand switch, the passenger M operates the armrest 5 with the left and right hands.
By holding the upper bar 52 and placing both elbows on the upper bar 52, a part of the weight can be supported there. When the lift device 7 is operated to the up side in this manner, the screw slider 74 screwed to the lift screw 72 moves upward, and first, as shown in FIG.
Abuts on the upper lifting body B waiting above it. At this time, when the link piece 57 is lifted, the armrest 5 is inclined upward about the shaft 55, and the knee rest 6 is positioned above the seat 30. In the state shown in FIG. 6, the knee Mb (the lower surface) of the occupant M is supported by the knee rest 6 at a position slightly above the upper surface of the seat 30, and the back Mc of the occupant M is supported by the backrest plate 40. They are in contact under pressure. (3) The up-side operation of the lift device 7 is continued, and the screw slider 74 (lower elevating body A) further moves upward, and as shown in FIG. Push up. Then, the armrest 5 (including the knee rest 6) and the backrest plate 40 simultaneously move upward, so that the knee Mb of the occupant M is supported by the kneerest 6 and the back Mc is pressed against the backrest plate 40. As a result, the occupant M is automatically lifted, and the buttocks Ma rise from the seat 30. And
When the position sensor 86 detects the uppermost movement position (stop position), the motor 71 is stopped by the detection signal. At this time (the state shown in FIG. 7), the catcher 81 holds the catch point 82 of the lower elevating body A, and the solenoid 84 operates to move the upper lock release bar 83 to the rear side (catch release side). Swinging. In this state, since the both knees Mb are hung on the knee rest 6 and the large area of the back Mc is pressed against the backrest plate 40, the buttocks Ma do not slip down without applying much force. . Then, with the buttocks Ma floating from the seat 30, the clothing (trousers, skirt, pants, etc.) covering the buttocks is shifted to the knee side. (4) Next, the passenger's buttocks are lifted (the state of Fig. 7)
Then, the seat 30 is slid to the rear evacuation position as shown in FIG. In this embodiment, the seat 30
Is manually slid, but may be slid electrically (for example, the guide rollers 34 and 35 are driven). As described above, when the seat 30 is slid to the rear evacuation position, the portion of the seat surface 3 corresponding to the seat surface of the toilet T is completely opened.
When the seat 30 is slid to the rear evacuation position, the seat sensor 36 is turned on, and the next down-side operation is enabled. (5) Subsequently, when the lift device 7 is operated to the down side, the motor 71 rotates in the reverse direction to rotate the lift screw 72 to the left as viewed from above, and the screw slider 74 (the lower lifting body A) is moved downward. At this time, since the upper elevating body B is held by the lower elevating body A by the catcher 81, both the upper and lower elevating bodies A and B move down as shown in FIG. 9, and the arm rest 5 (including the knee rest 6). ) And the backrest plate 40 move down, and the buttocks Ma of the occupant M sit on the seat surface of the toilet T. At this time, the catcher 81 approaches the lower unlocking bar 85 and is in a state immediately before the unlocking operation. Note that, in the state of FIG. 9, the front side of the armrest 5 remains inclined upward. (6) Then, when the lift screw 72 is further rotated downward (to the left), the catcher 81 abuts against the lower unlocking bar 85 and is unlocked as shown in FIG. Only the lower elevating body A moves down while B remains at the fixed position. Then, the armrest 5 (including the knee rest 6) is displaced from the inclined state in FIG. 9 to the substantially horizontal posture in FIG. 10 (the knee rest 6 is positioned below the seat surface of the toilet T), and the occupant M is completely removed. Is transferred to the toilet T. (7) Then, the toilet is completed in the state of FIG. 10, and thereafter, the lift device 7 is operated to the up side (the lift screw 72 rotates clockwise). Then, the armrest 5 including the knee rest 6
Then, the backrest plate 40 is lifted from the state of FIG. 10 to the uppermost position of the state of FIG. 8 via the state of FIG. 9, and once lifts the occupant to the uppermost position. At this time, the uppermost moving position of the upper lifting body B is detected by the position sensor 86, the motor 71 is stopped, and the upper locking release bar 83 is rocked by the solenoid 84 to the front lockable position. In this state, the buttocks Ma are located at a position higher than the height of the upper surface of the seat 30. At this time, the shifted clothing is returned. (8) Next, the seat 30 at the rear evacuation position (FIG. 8) is slid to the front seating position shown in FIG. When the seat 30 is slid to the front seating position, the seat sensor 36 is turned off, and the motor 71 is allowed to perform a downward rotation operation. (9) Thereafter, when the lift device 7 is operated to the down side, the armrest 5 including the knee rest 6 and the backrest plate 40 are moved to the position shown in FIG.
And the passenger's buttocks Ma are seated on the seat 30 to complete a series of convenience operations.

As described above, in the wheelchair of the present invention, the occupant can take a flight by himself while riding the wheelchair,
There is no need for assistance by a caregiver during stool service.

[0034]

According to the wheelchair of the present invention, as described above,
When the wheelchair occupant M takes a flight, the wheelchair is moved to a position where it can be straddled on the toilet T while the occupant is on board, and then the lift device 7 is up-operated to move the occupant to the knee rest 6. It is supported by the backrest plate 40 and floats upward from the seat 30. Subsequently, the seat 30 is slid to the retracted position, clothing (trousers and pants) is shifted in that state, and then the lift device 7 is operated down. This allows the passenger to sit on the toilet T by himself. And
By operating the lift device 7 in the reverse order after the stool, the occupant can be automatically displaced from a state of sitting on the toilet bowl to a normal wheelchair riding posture. .

Therefore, in the wheelchair of the present invention in which the user can sit on the toilet bowl while on board, even a person who is unable to walk can move to the toilet bowl by himself without using a caretaker's hand and use the toilet bowl by himself. In addition, this is an epoch-making effect for a wheelchair user, who can switch from the seat surface of the toilet T to the seat portion 3 of the wheelchair by himself after the use.

[Brief description of the drawings]

FIG. 1 is a side view of a wheelchair according to an embodiment of the present application.

FIG. 2 is a front view of the wheelchair of FIG.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part of FIG.

FIG. 5 is a view taken in the direction of arrows VV in FIG. 4;

FIG. 6 is a state change diagram from FIG.

FIG. 7 is a state change diagram from FIG.

8 is a state change diagram from FIG.

FIG. 9 is a state change diagram from FIG.

FIG. 10 is a state change diagram from FIG.

[Explanation of symbols]

1 is a seat, 2 is a wheel, 3 is a seat, 4 is a backrest, 5
Is an armrest, 6 is a knee rest, 7 is a lifting device, 11
Is a seat frame, 30 is a seat seat, 40 is a backrest plate, 7
1 is a motor, 72 is a lift screw, A is a lower elevating body, B is an upper elevating body, T is a toilet bowl, M is a passenger, Ma is a hip, Mb is a knee, and Mc is a back.

Claims (1)

[Claims] 1. Wheels (2, 2) are provided on the left and right sides of a seat portion (1) having a seat portion (3) and a backrest portion (4), and can be straddled on a Western-style toilet bowl (T). In a wheelchair, a seat (30) on which a passenger's buttocks (Ma) are placed and a knee rest (6) on which a knee (Mb) is placed in front of a front edge of the seat (30) are provided on a seat surface (3). The backrest portion (4) is provided with a backrest plate (40) slidable up and down with respect to the seat frame (11), and the seat seat (30) is seated on the seat frame (11). The knee rest (6) can be slid between a position and a retreat position where the buttocks (Ma) can be lowered downward by opening the sitting position, and the knee rest (6) is located above the upper surface of the seat seat (30) in the sitting position. Retreat below the knee support position and the height of the seat surface of the toilet (T) The knee rest (6) and the backrest plate (40) can be moved up and down by the lifting device (7), respectively, and the wheelchair is straddled on the toilet (T). By operating the lift device (7) in a state of being held, the wheelchair occupant can be moved between the seat (30) and the knee rest (6), and between the knee rest (6) and the toilet bowl (T). A wheelchair that can be transferred to and from a toilet bowl while on board.