RU159750U1 - FOLDING CHAIR - STROLLER - Google Patents

Abstract

The utility model relates to individual vehicles specifically designed for patients or people with disabilities in movement, namely, to wheelchairs. A folding wheelchair contains a frame and a seat, back, footrest, two rear driving wheels and two front freely self-orientating wheels with means for mounting them on the frame mounted on it. The frame consists of two half-frames, fastened together by a jumper under the seat. Each frame contains a curved support tube, on one end of which means for mounting the footboard is made, and on the other side means for mounting the backrest is attached. Each frame is also equipped with a L-shaped stiffener, at the apex of the corner of which is located the front wheel fastener. The long shoulder of the stiffener is attached to the support tube in the central part of the seat, and the short one is on the side of the footboard. The utility model improves the strength of the wheelchair. 7 c.p. f-ly, 8 ill.

Description

The utility model relates to individual vehicles specially designed for patients or people with mobility impairments, namely, wheelchairs, and can be used for independent movement and active recreation of persons with musculoskeletal disorders, diseases and lower amputation limbs, spinal disorders, injuries.

A folding wheelchair is known that comprises a frame and a seat, backrest, footboard, two rear driving wheels and two front free-wheeling wheels mounted on it with mounting means on the frame, the frame consisting of two half-frames fastened to each other under the seat by a jumper, each the half-frame contains a curved support pipe, on one end of which means for mounting the footboard is made, and on the other side there is attached means for mounting the backrest (see patent RU 103070, class A61G 5/00, publ. 03.27.201). The disadvantages of the known device are its limited carrying capacity, fragility during transportation and, as a result, fragility.

The objective of the utility model is to eliminate these drawbacks. The technical result is to increase the strength of the structure. The problem is solved, and the technical result is achieved by the fact that the folding wheelchair contains a frame and a seat, a backrest, a footboard, two rear driving wheels and two front self-orientating wheels mounted on it with mounting means on the frame, and the frame consists of two half-frames fastened to each other under the seat by a jumper, each half-frame contains a curved support pipe, at one end of which means for mounting the footboard are made, and means for mounting the backrest are attached to the other, each the frame is equipped with an L-shaped stiffener, at the apex of which is located the front wheel fastener, while the long shoulder of the stiffener is attached to the support tube in the central part of the seat, and the short one is on the side of the footboard. The jumper is preferably made in the form of a straight pipe mounted on the long shoulders of the stiffeners, and is equipped with braces attached at one end to the specified pipe in the Central part, and the other to the support pipes under the seat. The backrest can be made folding forward with the ability to adjust the angle. The backrest can be made with the function of changing the depth of the seat by moving the backrest along the longitudinal axis forward / backward. Also, the backrest can be equipped with removable handles. The footboard can be made with the possibility of height adjustment, adjustment of the angle. Means for mounting the front wheels are made in the form of glasses with the ability to adjust the installation angle of the entire assembly of each front wheel on the corresponding frame half.

In FIG. 1 depicts a proposed wheelchair, front view;

in FIG. 2 - the same side view;

in FIG. 3 - the same, rear view;

in FIG. 4 - the front of the frame;

in FIG. 5 shows the proposed wheelchair in a transport position with the drive wheels removed and the back folded down;

in FIG. 6 - drive wheel mount;

in FIG. 7 - back mount;

in FIG. 8 - back with a partially removed pillow.

The proposed folding wheelchair contains a frame and a seat 1 mounted thereon, a backrest 2, a footrest 3, two rear driving quick-detachable wheels 4 of a bicycle type with hoops 5 for hands and two front freely self-orientating wheels 6. The seat 1 and backrest 2 are made with the possibility of individual regulation of tension.

The wheelchair frame is made of high-strength lightweight anti-corrosion pipes and consists of two half-frames, each of which contains a support pipe 7 curved in two planes and an L-shaped stiffener 8. At one end of the support pipes 7, means for mounting and height adjustment are made and to the foot position of the footboard 3, and to the other there are attached means for mounting the backrest 2. The upper part of the pipes 7 forms a support for fastening the seat 1 before bending. At the apex of the corners of the L-shaped stiffeners 8 are mounted self-fixing means tiruyuschihsya front wheels 6 formed as a welded or fixed by bolts 9 with a hinge cup. The long shoulder of the stiffening element 8 is welded to the support pipe 7 in the central part of the seat 1, and the short one is from the side of the foot 3.

The half-frames are fastened together by a jumper in the form of a straight pipe 10, mounted on the long shoulders of the stiffeners 8. To the pipe 10 in the central part, braces 11 are welded at one end, the second end of which is welded to the support pipes 7 under seat 1.

The backrest 2 is made in the form of two pipes 12, between which the straps 13 are tensioned, and is equipped with a cushion 14. At one end of each pipe 12, fastening means is installed in the form of an adjusting plate 15 of the swivel joint, and on the other - removable handles 16. The plate 15 by means of a bolt connection fixed in the nodes of the longitudinal regulation in the form of strips 17 with holes mounted on the support tubes 7. Thus, the function of changing the depth of the seat by moving the backrest 2 along the longitudinal axis forward / back is realized, which ensures the possibility of individual adjustment of the center of gravity position. The back 2 with the plates 15 is mounted on the frame with the possibility of folding forward and adjusting the working angle using the locking mechanism in the form of a thrust screw 18.

On each bar 17, also with the possibility of longitudinal regulation by means of a bolt connection, an adapter stand 19 is mounted with clamps and bolts mounted on it with the possibility of vertical reinstallation of the direct or eccentric receiving sleeve 20 with a collapse of up to 6 for the axle 21 of the driving wheel 4. Turning the sleeve 20 provides adjustment of the alignment and toe-in of the driving wheels 4. The quick-detachable axis 21 consists of a body in the form of a hollow tube with an external thread, a self-locking nut, a receiving sleeve with a flange on at the other end and an external thread on the other, a spring-loaded rod inside the housing and the lock in the form of a locking cylinder with balls in its annular groove, the hub of the drive wheel mounted on the axis between the self-locking nut and the flange of the receiving sleeve mounted on the axis housing (not shown in the drawings) . The axis 21 assembly with the drive wheel 4 is inserted from the receiving sleeve 20 into the adapter 19 and secured with a nut.

The tool for mounting the front wheel 6 is made in the form of a fork 22 with an axis 23 mounted rotatably in the glass 9 with the possibility of adjusting the installation angle of the entire assembly of each front wheel 6 on the frame.

Joint movement with subsequent fixation of the glasses 9, the steps 3 and the clamps of the adapter 19 on the frame provides adjustment of the height of the wheelchair, seat angle 2 and the height of the steps 3.

The wheelchair is preferably provided with parking brakes 24.

Wheelchair is used as follows.

The user, for active recreation and movement, sits on the seat of the stroller, having previously adjusted its nodes taking into account its ergonomic characteristics.

The supply of the proposed wheelchair with stiffeners 8 and braces 11 can significantly increase the strength of the frame due to the formation of several supporting contours and reduce the likelihood of bending pipes 7 and 10 during transportation, thereby extending the life of the device.

The wheelchair provides comfortable use and ease of use for both a healthy user and a user with various deviations of the musculoskeletal system without age restrictions for independent movement and movement with the help of accompanying people. The wheelchair is high-tech in production, can be operated in indoor and outdoor conditions, it can be folded and disassembled without tools, it can be easily transported in a small passenger car.

Claims (8)

1. A folding wheelchair containing a frame and a seat, backrest, footrest, two rear driving wheels and two front freely oriented wheels mounted on it with mounting means on the frame, the frame consisting of two half-frames fastened to each other under the seat by a jumper, each half-frame contains a curved support pipe, on one end of which means for mounting the footboard is made, and to the other is attached means for mounting the backrest, characterized in that each half-frame is equipped with an L-shaped stiffener , at the apex of the corner of which is located the fastening means of the front wheel, while the long shoulder of the indicated stiffener is attached to the support tube in the central part of the seat, and the short one is from the side of the footboard. 2. Wheelchair according to claim 1, characterized in that the jumper is made in the form of a straight pipe mounted on the long shoulders of the stiffeners and is equipped with braces attached at one end to the specified pipe in the central part and to the supporting pipes under the seat with the other . 3. Wheelchair according to claim 1, characterized in that the backrest is folded forward with the possibility of adjustment in angle. 4. Wheelchair according to claim 1, characterized in that the backrest is configured to change the depth of the seat by moving the backrest along the longitudinal axis forward / backward. 5. Wheelchair according to claim 1, characterized in that the footboard is made with the possibility of height adjustment. 6. Wheelchair according to claim 1, characterized in that the footboard is made with the possibility of adjustment in angle. 7. Wheelchair according to claim 1, characterized in that the backrest is equipped with removable handles. 8. Wheelchair according to claim 1, characterized in that the means for mounting the front wheels are made in the form of glasses with the ability to adjust the installation angle of the entire assembly of each front wheel on the corresponding frame half.

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