RU2272605C2 - Wheel-chair for handicapped people - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: wheel-chair can be used by handicapped people for moving at home and outside by using manual drive. Wheel-chair has two side frames provided with mechanism for folding them in longitudinal direction, front and rare wheels, seat, back, motion level which is connected by draught with crank gear of one rare wheel and motion control rope drive mechanism. Wheel-chair is provided with self-adjusting and drive wheels and with two discs. Discs are tightly fixed at drive wheels for sitting at their axes. Drive joist is fastened to one disc at external side of drive wheels. Joist is mutually connected with draught and drive level. Removable axis is disposed at axes of drive wheels and it serves for fixing drive wheels. Connecting rods are fixed movable at axes of drive wheels and they are spring-loaded against rests at frames of wheel-chair. Additional wheels are fixed movable at ends of connecting rods. Additional wheels have ability to contact with drive wheels. Connecting rods are connected with rods and axis of rotation by smaller ropes. Axis of rotation has handle at its end and the axis is disposed in post. Post is rigidly fixed to frame. Wheel-chair can be driven into motion with one hand. Wheel-chair can be dismounted to reduce its sizes to fit width of door and to remove drive wheels at availability of attending personnel.

EFFECT: easiness of use; reduced cost.

2 cl, 5 dwg

Description

The invention relates to medical equipment for moving persons with disabilities at home and on the road using a manual drive.

1. A device is known for a wheelchair for the disabled (auth. St. RF No. 1012905, 1983), comprising a front and two rear frames with drive wheels, a crank mechanism mounted on the axles of the drive wheels associated with the lever, one of which is connected to the front wheel. In order to preserve the product, the stroller is equipped with a folding mechanism.

Disadvantages: the frame is made up of parts, two levers are used at once: one of them is used to turn the wheel; large turning radius.

2. Known devices for wheelchairs with hydro - and electromechanical drive.

Disadvantages: high cost, inaccessible product for most consumers.

3. A wheelchair for disabled people is known — RF patent No. 2068252 96, containing two frames with a longitudinal folding mechanism, front and rear wheels, a seat, a backrest, armrests, two brakes, two steps, one of which is equipped with a drive for turning the front wheel adjacent to it wheels.

Disadvantages: in this version of the stroller, the leg is rotated by the foot, which is unacceptable in practical use by people with disabilities who have lower limbs paralyzed, and most of these spinal patients; lack of maneuverability, especially in a small area.

This device is taken as a prototype.

The essence of the invention lies in the fact that the wheelchair for people with disabilities contains two side frames with a mechanism for longitudinal folding, front self-aligning and rear driving, steered wheels, it is also equipped with two knurled disks on the periphery, a drive bar interconnected with the telescopic link is rigidly fastened and the drive lever, and the locking of the driving wheels 3 and 4 is a removable axis, while the stroller is made with additional wheels, movably mounted on the ends of the connecting rods, which odpruzhineny the stops on the frame, at the other ends of rods made planting hole rotatably in the axes of the drive wheels.

A wheelchair for disabled people is shown schematically in the drawings, where:

figure 1 shows a stroller, left view;

figure 2 is a view A, figure 1, a front view of the stroller;

figure 3 is a section bB in figure 1;

figure 4 - section bb in figure 2;

figure 5 - section GG in figure 3.

The stroller is made of left and right frames 1 and 2 with a folding mechanism and is equipped with rear driving wheels 3, 4 and front self-locking wheels 5. Wheel 3 is provided on the outside with a drive bar 6 with traction 7, and rigidly on the inside of wheels 3 and 4 disks 8 are fixed, one of them on the wheel 3 is rigidly fastened with a crossbeam 6 and with a radial groove 9, in which the axle 10 is bolted, the telescopic link 7 is pivotally mounted on it, and the removable axis serves as the fastening between the wheels 3 and 4 11 and the other end of the link 7, pivotally connected to the telescopic travel lever 12. The length of the link 7 is adjusted by the clamp 13. The height of the link 12 is adjusted by the clamp 14, in the axles 15 of the driving wheels 3 and 4, the removable axis 11 is fixed, the wings 16 and the clamp 17, adjustable on the height of the footboard 18, while additional wheels 19 are made, movably fixed at the ends of the connecting rods 20, which are spring-loaded against the stops 22, and at the other ends of the connecting rods 20, mounting holes are made with the possibility of rotation in the axles of the wheels 3 and 4 and the connecting rods 20, interconnected by cables 23, soy dyed with the rods 24 and them with the axis of rotation 25 at the end with the handle 26, the axis 25 is mounted freely in the rack 27, rigidly mounted on the frame 2.

The stroller has a longitudinal folding mechanism 28 with the release of the axis 11, a seat 29 with armrests 30 and a back 31, which is equipped with parking brakes 32 attached to the frames 1 and 2.

The action of the stroller is used as follows. The wheelchair is driven by swinging the lever 12 toward itself, away from itself and in a neutral position; under the action of the springs 21 by pressing the connecting rods 20 with the wheels 19 against the stops 22 and through the cable systems 23, the action is transmitted to rotate the stroller, which is carried out by turning the wheelchair with handle 26 clockwise or counterclockwise, respectively, the stroller rotates in one direction or another, or, when desire, around; when the handle 26 is held for a long time in the direction of one or another rotation of the stroller, this occurs as a result of a change in the direction of one of the wheels in contact with the road surface and with the additional wheel 19, so the direction of their rotation changes to the opposite by the contact of the wheels 3, 4 and 19, respectively, turn or turn the stroller in place. In order to confirm this, there is a valid prototype.

In this embodiment, the stroller is driven by swinging the drive lever 12 with one hand, and the second hand acts on the pivot handle 26, i.e. both hands of the disabled person are involved, which is especially necessary when the lower limbs are paralyzed. At the same time, it is also possible to carry out the option where it is possible to act with one hand on the drive and on the rotation of the stroller (the previous application material for the wheelchair is invalid (see application filed by me at FIPS in May 1999, No. 99111858, which is under consideration with a priority of 26.05. 99, as well as my request to expedite the consideration of the application material in connection with the filing of a new application on the basis of the previous one, which, in my opinion, has some advantages)).

Advantages of a wheelchair over currently known:

1. The cost is much cheaper than strollers with electric, mechanical and other similar drives;

2. The possibility of using a stroller with one active hand, which is deprived of a stroller with a manual drive;

3. If necessary, it is possible to use the dismantling of this stroller in order to reduce the width of the doorway with no drive wheels, if there are maintenance personnel and other features in the use and use of wheelchairs for the disabled.

Claims (2)

1. Wheelchair for the disabled, containing two side frames with a mechanism for longitudinal folding, front and rear wheels, a seat, a back, a travel lever connected by a traction to the crank mechanism of one of the rear wheels, a cable drive movement control mechanism, characterized in that it is equipped with self-aligning and driven drive wheels and two discs rigidly fixed to the drive wheels with a fit on their axles, and a drive bar, interconnected to one of the drives on the outside of the drive wheels with a rod and a driving lever, and the drive wheels are fixed to each other, a removable axis fixed in the axles of the driving wheels is used, while the connecting rods are movably fixed to the axles of the driving wheels and spring-loaded to the stops on the carriage frames, and additional wheels with the possibility of contact are movably fixed at the ends of the connecting rods with drive wheels, and the connecting rods are interconnected by ropes with rods and with a pivot axis having a handle at the end and located in a rack rigidly fixed to the frame. 2. The stroller according to claim 1, characterized in that the movement lever is made telescopic and has a height adjustment clip.

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