JP5240626B2 - Lifting seated wheelchair - Google Patents

Description

  The present invention relates to a lift seat wheelchair for a care recipient.

  A wheelchair in which a care recipient gets on a wheelchair and moves to an installed toilet and uses the toilet while seated in the wheelchair is designed to be a toilet seat in the seating part and to lift the legs. . In Patent Document 1, the four legs supporting the toilet seat are moved up and down by an actuator using electricity as a driving source, and in Patent Document 2, the seat plate corresponding to the toilet seat is directly moved by a cylinder or a pantograph jack. A direct-acting structure that moves up and down, or, as in Patent Document 3, has been devised that uses a pulley and a rope to increase the lifting stroke of the toilet seat and is driven by an electric cylinder.

  JP2005-111044   JP 2005-319248 A   Utility model registration No. 3091553

For care recipients who are unable to perform sufficient stance movements, the caregiver's support is only allowed to move to a stationary toilet while sitting in a wheelchair, but remain minimally seated in the wheelchair when using the toilet. And there is a desire to use it alone.
Against this background, the toilet seat is lifted and lowered in a simple structure so that it can remain seated on the toilet seat of the wheelchair in a series of processes from the preparation stage to the use stage after use. A cheap and cheap one is desired.
However, since the actuator which uses electricity as the drive source is attached to all four legs that support the toilet seat, the structure of Patent Document 1 is solid, but the cost is high. In addition, since the frame of the wheelchair is fixed, in the case of a care recipient who cannot move from the bed to the wheelchair by himself, the means of skidding cannot be taken, increasing the burden on the caregiver. Since the thing of patent document 2 has provided the drive source in two places on right and left, this is also expensive. It is also premised on those who need to be able to stand on their own.
Furthermore, the structure of Patent Document 3 is complicated.

  The present invention reduces the burden on the caregiver in the course of transferring the bed from the bed to the wheelchair, and the caregiver's burden in the course of moving from the wheelchair to the bed. It is based on the protection of the privacy of the care recipient based on the above. That is, during the short period of the series of steps between the use preparation stage and the post-use stage of the installed toilet, the elevator seating wheelchair of the present invention is placed on the bed for the care recipient, and the bed is The seat is raised to the height, the armrest is rotated upward, and the care recipient is transferred to the seat by a skidding method. When the transition is completed, the armrest is returned to the original position, the seat is lowered to the descent base point, and the vehicle travels to the toilet. After moving, lift the seat to the height at which the seat of the lifting seat wheelchair is on the toilet seat of the toilet, and then retract the wheelchair to a position where the seat seat and the toilet seat match in the height direction By lowering the seating descent until it comes into contact with the toilet seat, the care recipient can sit on the toilet seat through the seating sheet and use the toilet without requiring a caregiver.

After the stool, the caregiver raises the seat, advances the wheelchair and leaves the toilet seat, lowers the seat to the descent point, returns to the bed, raises the seat to the bed height, then raises the armrest Rotate to the side and move the care recipient to the bed by the method of skidding.
This means that the physical fatigue of the caregiver is halved, and an inexpensive wheelchair is provided using a simple lifting mechanism.

  The first means is that the upper relative portion of the dolly (3) capable of traveling and the relative portion of the seating base (11) on which the seating seat (20) having the hole (20a) is placed are parallel to the kemp. The cylinders are relatively coupled by a motion mechanism (22), and an operating cylinder (18) provided on the carriage (3) is jointed by a shaft (15a) at a movable starting point of the Kemp parallel motion mechanism (22). The seating base (11) is raised and lowered vertically by extending and contracting (18).

  The second means includes an operating link (16) at an intermediate portion of the lower link (6) constituting the Kemp parallel motion mechanism (22), and an operating link (15) at the extended end of the upper link (9). The operating links (16, 15) are connected to each other to form a movable starting point.

  The third means is a cylindrical rigid member (17) in which the lower portions of the opposed lower links (6) constituting the Kemp parallel motion (22) are coupled.

  Since the lift seat wheelchair of the present invention only moves from the bed to the wheelchair, moves from the wheelchair to the bed, and raises and lowers the toilet seat only during the use preparation stage and the post-use stage of the toilet, The source is one of the smallest units, and because of the simple Kemp parallel movement mechanism of the structure, it is inexpensive, and since the toilet seat moves up and down vertically, care recipients do not carelessly touch the toilet. The care recipient can use the toilet while sitting in the wheelchair, and can be carried in a relatively small toilet because it is a simple lifting device.

Side view of the wheelchair of the present invention The figure which partially omitted the seating seat in the top view of the wheelchair of the present invention The figure where the wheelchair of the present invention descends towards the toilet The perspective view of the wheelchair of the present invention Placement perspective view of seating sheet mat on the seating base Overview of Kemp parallel motion

FIG. 1 is an overall side view of a lift seat wheelchair (2), and FIG. 2 is a top view of FIG. There is a seating base (11) at the top of the frame-structured carriage (3). A seating seat (20) is placed on the seating base (11), and a care recipient is placed on the seating seat (20). Shows a state where he has been seated and has just traveled to the top of the toilet (1).
Between the carriage (3) and the seating base (11), there are provided links for vertically moving the seating base (11) up and down using a Kemp parallel motion mechanism (22) for connecting both. In addition, an operating cylinder (18) for operating the links is attached to the carriage (3), and a rear wheel (5) for supporting the carriage (3) and a caster type front wheel (4) are provided. It is.

The seat (20) has a hole (20a) that aligns with the toilet bowl (1). On the seating base (11), a descent stop (23) is fixed that hits the backrest part (11a) and the toilet seat upper surface of the toilet bowl (1), and is a handle for moving the lifting seat wheelchair (2). (11b). The backrest part (11a) is provided with a lifting armrest (19) with the axis (19a) as a rotation axis. A soft mat (21) can be placed on the seating sheet (20) in consideration of use other than the toilet.
One end of the lower link (6, 7) is pivotally supported by the shaft (6a, 7a) on the carriage (3), and the other end is pivotally supported by the shaft (6b, 7b) on the horizontal link (8). On the other hand, one end of the horizontal link (8) is supported by the upper link (9, 10) and the shaft (6b, 7b), each of which is supported on the seating base (11) by the shaft (9a, 10a). To form a parallelogram link mechanism, and based on the horizontal link (8), the lower links (6, 7) and the upper links (9, 10) are the target Kemp parallel motion mechanism ( 22). The upper link (9) is slightly longer than the lower links (6, 7) and the upper link (10) on the basis of the axis (6b) because of the relationship with the movable source link together with the lower link (6). The Kemp parallel motion mechanism (22) has one end at the link C (14) pivotally supported by the shaft (9a) on which the upper link (9) is pivotally supported by the seat base (11), and one end at the carriage. The link A (12) pivotally supported by the shaft (12a) on (3), and the shaft (7b) whose one end is pivotally supported by the horizontal link (8), the lower link (7), and the upper link (10). The link B (13) pivotally supported by the link C (14), the link A (12), the link B (13), the other end pivotally supported by the shaft (12b), and the link A The length of (12) is the same as the length between the shaft (7a) and the shaft (12a), the length of the link B (13) is the same as that of the lower link (7), and the length of the link C (14) is the length of the shaft ( 9a) and the length between the shaft (10a). (See Figure 6)

One end of the operating link (16) is supported by the lower link (6) with the shaft (6c), and one end of the operating link (15) is supported by the shaft (9b) with the upper phosphorus (9). The other ends of the working links (15, 16) are both supported by the shaft (15a) on the other end of the working cylinder (18) whose one end is supported by the shaft (3b). The operating links (15, 16) have the same length, and the length between the shaft (6c) and the shaft (9b) with the shaft (6b) as a base point is the same length. The actuating link (15, 16) is connected to the lower link (6) and the upper link (9) with the movable source link as a movable source link, and the lifting force derived from the actuating cylinder (18) is applied via the actuating link (15, 16). This is because the lower link (6) and the upper link (9) are distributed.
The Kemp parallel motion mechanism (22) is provided at two places on the left and right, but the working cylinder (18) is provided only on one side of the two places. That is, although it is provided on the right side in FIG. 4, it can be moved to the left side. Since the rigid member (17) is integrally attached at the lower end portion of the lower link (6) provided on the left and right, the rigidity of the left and right Kemp parallel motion mechanisms (22) is increased, and the links A and B , C (12, 13, 14), each joint point of the Kemp parallel motion mechanism (22) operates without difficulty, so that one operating cylinder (18) can be installed. In addition, a step (24) for the care recipient to put his / her foot on is provided on the front side of the carriage (3).

  The care recipient remains seated on the seating base (11), and the lifting and lowering seating wheelchair (2) is transported by the caregiver to the position directly above the toilet (1) shown in FIG. ) In the direction of the arrow, the lower link (6) is rotated in the direction of the arrow (right rotation) by the operating link (15, 16), so that each link (6, 7, 9, 10, 12, 13 and 14) rotate in the direction of the arrow, and at the same time, the lateral link (8) moves in the direction of the arrow, and the seating base (11) descends vertically in the direction of the arrow. Therefore, the seating base (11) descends vertically to a position as shown in FIG. Therefore, when the seating base (11) is vertically lowered, an event that the care recipient needs to touch the toilet or the like due to an error in the visual position of the toilet (1) and the wheelchair can be avoided.

As shown in FIG. 3, it is lowered until the lowering stop (23) of the seating base (11) contacts the toilet (1), and the care recipient is seated on the seating seat (20) of the seating base (11). Use the toilet as it is.
After the toilet is used, when the actuating cylinder (18) is actuated in the contracting direction, the Kemp parallel motion mechanism (22) acts in a direction to raise the seating base (11) and returns to the original position in FIG. When the wheelchair is moved away from the toilet from this state, the seating cradle (11) is lowered to the state shown in FIG. 3 and then moved from the toilet to another place such as a bed by the caregiver.
In normal traveling after using the toilet, if the user lowers the seating base (11) and travels, the position of the center of gravity of the wheelchair is lowered and more stable traveling can be expected.
When the mat (21) is placed on a seating sheet (20) placed on the upper surface of the seating stand, the wheelchair can be used as a normal traveling wheelchair. (Refer to FIG. 5) Further, only the seating seat (20) may be washed alone so that it can be detached from the seating base (11), or a safety belt, a brake can be attached. Is possible.

  The seating base (11) is raised at the time of transfer from the bed to the wheelchair and lowered when the transfer is completed, and the seating base (11) is raised only when straddling the toilet, and is lowered when using the toilet, Since it is lifted after using the toilet and lowered when it is separated from the toilet, it does not repeat up and down frequently within a day. But you can use it.

DESCRIPTION OF SYMBOLS 1 Toilet 2 Lifting seating wheelchair 3 Bogie 4 Front wheel 5 Rear wheel 6, 7 Lower link 8 Lateral link 9,10 Upper link 11 Seating base 12 Link A
13 Link B
14 Link C
15, 16 Actuating link 17 Rigid member 18 Actuating cylinder 19 Armrest 20 Seating seat 21 Mat 22 Kemp parallel motion mechanism 23 Lowering stop

Claims (3)

  Kemp parallel motion mechanism (22) between the upper relative portion of the dolly (3) that can travel and the relative portion of the seat base (11) on which the seat (20) having the hole (20a) is placed. And the working cylinder (18) provided on the carriage (3) is joined by the shaft (15a) at the movable starting point of the Kemp parallel movement mechanism (22), and the upper working cylinder (18) A lifting and lowering seating wheelchair characterized in that the seating base (11) is vertically moved up and down by extending and contracting.   The operation link (16) is joined to the intermediate portion of the lower link (6) constituting the Kemp parallel movement mechanism (22), and the operation link (15) is joined to the extended end of the upper link (9), respectively. The lifting and lowering seating wheelchair according to claim 1, wherein the links (16, 15) are joined to each other as a movable starting point.   The lifting and lowering seating wheelchair according to claim 1, wherein the lower part of the opposed lower link (6) constituting the Kemp parallel movement (22) is coupled by a cylindrical rigid member (17).

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