JP2011218121A - Wheelchair riding on and down step clearing step between earth floor and floor face while making patient sit on the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheelchair riding on and down a step clearing the step between an earth floor and a floor face while making a patient sit on the same.SOLUTION: Middle wheels 5 are arranged in a space between front wheels 2 and rear wheels. The rear wheels and the middle wheels 5 has a diameter of the diameter of the front wheels 2, drawable rods 10 and support pieces 6 are arranged behind the rear wheels and are drawn for the sake of balance and safety, vertical levers 7 are lowered and the middle wheels 5 are pushed out, the front wheels 2 are floated using the same as fulcrums, first the front wheels 2 are raised on the floor face and then are braked to retract the middle wheels. The middle wheels 5 are retracted and raised on the floor face, and thereby the center of gravity is moved on the floor face. Then the rear wheels are raised. Here, the drawable rods 10 are retracted, and thereby the front wheel driving wheelchair is placed on the floor face. The wheelchair is lowered by a generally opposite procedure when being lowered. Thus, the wheelchair riding on and down the step has a function to ride on and down the floor face and the earth floor.

Description

Technology field

  The rear wheel of normal wheelchair handling will be used as the front wheel and will be a front wheel drive vehicle. A middle wheel that can be taken in and out to fill the space between the front wheel and the rear wheel is provided, and this is lifted with a lever to serve as a seesaw fulcrum and the push handle is lowered to raise the front wheel. Push the front wheel up until it rises on the floor, release the brakes after storing the braked middle wheel, and push it further to move the center of gravity on the floor only to the front and middle wheels. Sesame was added to the drawer bar for balance and safety, and it was made a wheelchair that can raise and lower the level difference between the soil and the floor of a general house just by pushing. When turning to the right or left, the rear wheel axle spring and long hole are slanted by handling. This is related to clearing the level difference from the floor to the floor and from the floor to the floor directly with a wheelchair.

  Conventional wheelchairs have small casters on the front wheels, so it was necessary to have via-free and slope facilities to get over even a small level difference. Long slopes can be seen in public facilities, but in Japanese houses, the entrance is narrow and the gap between the soil and the floor is 40 cm. There were elevator-type step elevators and slopes, but there was no permanent space and it was necessary to remove them one by one. Although it was an aging society, I could not go where I wanted to go in a wheelchair.

  I couldn't go if there were steps in the wheelchair. Slopes are not always available at narrow entrances. In a home with a long-term wheelchair patient, it was a difficult task to clear the daily steps. Is it possible to go up and down directly from the entrance with a wheelchair without a slope? Can you go up and down directly from the garden to the rim? If you have a wheelchair you don't need to worry about steps, you can go where you want to go. Because there were many problems like this, we solved this problem with this step-lifting wheelchair.

  Even a small step was difficult to overcome with a conventional wheelchair. I couldn't stop where there was a big step on the road. For disabled people, wheelchairs, which are part of the body, are often associated with steps. The only solution to this problem is to attach a step-removal device to the wheelchair. The solution to this problem is the step-lifting wheelchair (1). Improve the existing wheelchair, change the position of the front wheel (2) and rear wheel (4), and fill the gap between the middle wheel (5), the drawer rod (10) and the supporting sesame (6) to keep stability Just by adding, the height of the two blocks can be cleared only with this wheelchair. It was configured as such a function.

  Raising / lowering and taking in / out of the additional wheels has been simplified. Even without the entrance slope of the house, it was possible to move up and down steps of 40 centimeters only with a wheelchair. With this step-lift wheelchair, you can safely go to places you do not know. By storing each additional wheel, it becomes a front-wheel drive self-propelled wheelchair. If the front wheel is steered by handling the rear wheel, the axle position of the rear wheel will shift and bend freely. The total length is combined with the existing wheelchair. Because it is front-wheel drive, the arm and shoulders are not burdened, the running posture is good and the tiredness is reduced, so that elderly people and women can ride easily.

Hereinafter, the raising / lowering procedure for implementing this invention is demonstrated.
In the existing wheelchair, the rear wheel was handled, but in the step-up / down wheelchair, the front wheel drive handling (3) is used. Because the front wheel (2) is large, it can be overcome only by the passenger at a small level difference such as a threshold. If there is an extreme step, the wheelchair attaches the tire forward and stops the drawer bar (10) contained in the rear wheel (4) with the drawer bar pin (9) to fix the support sesame (6). Next, after lowering the upper and lower levers (7) of the middle wheel (5) vertical push rod (11), the middle wheel (5) is lowered to the push rod stopper (8). By pushing down the handwheel handle (14), the middle wheel (5) becomes a seesaw with the fulcrum as the fulcrum, and the front wheel (2) is lifted (Fig. 2). Apply the brake and raise the upper and lower levers (7) of the middle wheel (5). When the brake is released and the middle wheel (5) is pushed up on the floor, the center of gravity of the passenger and the wheelchair moves on the floor (FIG. 4). Further, the rear wheel (4) is pushed by the hand handle (14) and raised on the floor. When it rises on the floor, the drawer bar (10) and the supporting sesame (6) are stored. This becomes a front wheel drive wheelchair (FIG. 1) and can run on the floor. When descending from the floor, pull out the pull-out bar (10) backward, stop it with the pull-out bar pin (9), then lower the rear wheel (4) from the floor and lower the middle ring (5) (Fig. 3). ) Apply the brake, then use the up / down lever (7) to pull out the vertical push rod (11) to lower the middle wheel (5), then release the brake and slowly lower the front wheel (2) (FIG. 2). When the middle wheel (5) is lowered to the seesaw fulcrum, the upper and lower levers (7) are raised, and when the front wheel (2) and the rear wheel (4) land, the drawer rod (10) is stored. This returns to the front wheel drive wheelchair (Fig. 1) in the dirt.

  It is a side view of the front wheel drive of a level raising / lowering wheelchair.   It is a side view of the front wheel floor upper corner position of a level raising and lowering wheelchair.   It is a side view of the middle wheel floor upper corner position of a step-lifting wheelchair.   It is a side view of the rear wheel floor upper corner position of a level raising and lowering wheelchair.   It is a rear view of a step-lifting wheelchair.   It is a front view of a level raising / lowering wheelchair.   It is the skeleton figure of a level raising / lowering wheelchair, and the perspective view of a rear-wheel axle part. * The drawing is a wooden figure, but it can be changed to hard resin or metal.

DESCRIPTION OF SYMBOLS 1 Level lift wheelchair 2 Front wheel 3 Handling 4 Rear wheel 5 Middle wheel 6 Supporting sesame 7 Vertical lever 8 Push rod stopper 9 Pull-out pin 10 Pull-out rod 11 Vertical push rod 12 Rear wheel long hole 13 Direction spring 14 Push handle 15 Pillow 16 Backrest 17 Seat 18 Foot rest

Claims (4)

  A step-up / down wheelchair (1) that can be lifted directly from the floor of a house to the floor by a caregiver while the patient is still on, even without a wheelchair ramp. It can be used as a front wheel drive wheelchair on a daily basis. The existing rear wheel with self-propelled wheelchair handling is used as a front-wheel drive vehicle in the step-lift wheelchair (1) (FIG. 1). Middle wheel (up and down) to fill the space between the front wheel (2) and the rear wheel (4), with the total length from the front wheel (2) to the rear wheel (4) being the same size as the existing wheelchair. 5) is provided (FIG. 1). The length for attaching this to the vertical push rod (11) is adjusted by the height difference (FIG. 2). Furthermore, a drawer bar (10) and a supporting sesame (6) that can be stored in the rear wheel (4) are also provided at the bottom of the wheelchair. The size of the rear wheel (4) and the middle wheel (5) is approximately the radius of the front wheel (2) so that the front wheel (2), the middle wheel (5) and the rear wheel (4) can be passed in order. The length of the drawer bar (10) is the total length of the base from the position excluding the footrest (18) of the wheelchair to the end of the rear wheel (4), about half of which is pulled out, the remaining half length Now we support the weight (Figure 2). While these wheels are sent in order from the front wheel (2) (FIG. 3) (FIG. 4), it is possible to move up and down the steps.   Since the floor is not damaged when ascending / descending, tires are used for the grounding point, and the assistant does not need to lift the push handle (14) simply by pushing it. The passenger of the step-lifting wheelchair (1) urges the lifting by handling (3). If the wheel contact point and the floor contact point are 2/3 or less of the wheel radius, they can be easily lifted by the wheel rotation. When the support sesame (6) of the drawer bar (10) is pulled out and the middle wheel (5) is lowered by the vertical lever (7) and the vertical push bar (11) is lowered, the push bar stopper (8) is engaged. The assistant enters the seesaw state by pressing the hand handle (14), and the front wheel (2) rises with the middle wheel (5) as a fulcrum. At the same time, the rear wheel (4) is also lifted (FIG. 2). At this time, in the wheelchair, only the middle wheel (5) and the support sesame (6) land and support the weight (FIG. 2). Push the raised front wheel (2) against the corner on the floor and push it up. The drawer bar (10) and the supporting sesame (6) serve to stabilize the movement of the center of gravity of the occupant and to ensure the safety of the elevation angle.   By enlarging the front wheel (2) of the wheelchair and driving it to the front wheel, it is possible to pass a slightly high step that cannot be overcome by the front wheel drive. In order to move up and down further higher steps, if the front wheel (2) is raised on the floor according to the procedure described above (Fig. 3), the brake is applied and the upper and lower levers (7) are raised and stored, then the brake is released and the middle wheel (5 ) When the middle wheel (5) rises on the floor, the center of gravity of the passenger and the wheelchair moves on the floor (FIG. 4). When the rear wheel (4) is further pushed up, the middle wheel (5) is lifted slightly from the floor surface and becomes idle (FIG. 1). Here, when the drawer bar (10) is stored behind the rear wheel (4), it returns to the front wheel drive wheelchair on the floor (FIG. 1).   The left and right wheels of the rear wheel (4) are two wheels on each side, for a total of four. The steering wheel of the front wheel (2) is turned to the right and left by turning the steering wheel so that the axle hole of the rear wheel (4) has a slot with play on both sides, and the rear wheel slot (12) Make an angle so that it is slightly lower. The directional spring (13) is pulled forward, but when turning, the directional spring (13) of the outer axle extends and the directional spring (13) of the inner axle remains pulled. . As a result, the outer wheel shaft moves down to the rear of the elongated hole, so that the outer wheel becomes higher and a load is applied. As a result, the circumference becomes longer due to the movement of the outer wheel shaft than the inner wheel (rear wheel axle partial view of FIG. 7). By applying a load to the outer wheel, it will be prevented from spinning around and bend inward. The brakes use existing wheelchair equipment.

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