SI9800076A - Supporting assembly of detachable wheelchair with arc adjustable foot supports and backrest - Google Patents

Abstract

Subject of the invention is a supporting assembly of detachable wheelchair with arc adjustable foot supports and backrest, which allows the user along with all basic or later implemented settings independent, easy, quick and simple modification of settings of most of the basic dimension and physiologically necessary parameters such as: length and angle of the supporting holders and backrest. The essential and new feature of the presented concept for the supporting assembly according to the invention is characterised by the arc or radial curved shape of parts of the basic pipe supports (1, 1') which hold the adjustable foot supports (2) and backrest (3) with the help of supporting vises (4) with implemented radial clamping grooves or supporting vises (5) featuring a combination of radial and even clamping grooves, which after attachment prevents their radial rotation around the basic pipe supports (1, 1')

Description

FOLDING DISABLE TROLLEY CARRIER BATTLE WITH SEPARATELY ADJUSTABLE FOOTBAGS AND BACK BACK

The subject of the invention is a folding wheelchair carrier for transporting disabled persons with separately adjustable pedestals, backrest and armrests, which enables the user to independently, easily, quickly and easily change the setting of most basic dimensional and physiologically necessary parameters at basic setting or later settings such as: adjusting the length and angle of the footrests and backrest. The carrier rod is intended for the construction of hand-operated or motor-driven wheelchairs, which are intended to alleviate or eliminate the degenerative problems that occur on their bloodstream, muscles, spine, joints and skeleton due to long-term sitting in the same position of the body and limbs. lack of variability in the mechanical parameters of conventional wheelchairs. The invention belongs to Class A 61 G 5/00 of the International Patent Classification.

A technical problem that is successfully solved by the proposed carrier rod according to the invention is such a structural solution of a folding wheelchair, which, despite the strictly required minimum weight and dimensions of the entire wheelchair, allows basic, easy, fast and easy change of setting at basic setting or later settings most basic dimensional parameters: length and angle of footrests and backrest.

io In particular, the technical problem is the construction of such a support rod, which, if fulfilling the requirements of the above-mentioned adjustability, would fully meet the other required parameters, especially those that are important in the modern era of increasing social emancipation of disabled people: minimizing the weight and optimum folding of the whole cart necessary for the independent insertion of the trolley in a passenger car, the smallest external dimensions due to the possibility of independent movement of the disabled person in different indoor spaces and the maximum mechanical load of the adjustable elements and the whole stick, which, with the obligatory light weight, enables the disabled to move safely in nature and to participate in sports and recreational activities.

The designs of the famous wheelchairs' rods are distinguished mainly by the technical design of their folding.

The first group includes rods of folding carts, with scissors of vertically parallelogram design. As a rule, such rods are made on the basis of two symmetrical supporting frames, each of which is made of at least four circular metal tubes, which are welded perpendicularly to each other at all four corners of the frame. Both rectangular side frames are interconnected by a system of parallelogram Scissors that carry the driver's seat sticks at the top. The backrest rods are typically inserted in such trolleys into the last two vertical tubes of the frame and are only partially adjustable in height. The armrests of such trolleys are usually a separate unit which is mounted on the trolley by means of special brackets attached to the side carrier frames. The pedestals are usually mounted on such frames with one of the known snap-in systems, and are adjustable only in height. In sports carriages under this system, the pedestals can also be integrated into the base rod and can only be adjusted in height in a similar and familiar manner. The disadvantages of the system of this group are more and more, and when required with the variable angle of the backrest or footrests, the whole trolley becomes much heavier and much less suitable for easy stacking and transportation with other vehicles.

In the second group are rods of folding trolleys, with simple vertical scissors and telescopic vertical guides. As a rule, such rods are made on the basis of two symmetrical supporting frames, each of which is made of at least four circular metal tubes, which are welded perpendicularly to each other at all four corners of the frame. Both rectangular side frames are interconnected by a system of simple Scissors, which at the top carry the driver's seat rods, and the symmetry of the Scissors' operation is ensured by vertically mounted telescopically extendable supports or guides. The backrest rods are typically inserted in such trolleys into the last two vertical tubes of the frame and are only partially adjustable in height. The armrests of such trolleys are usually a separate unit which is mounted on the trolley via special mounts attached to the side support frames. The pedestals are usually mounted on such frames with one of the known snap-in systems, and are adjustable only in height. In sports carriages under this system, the pedestals can also be integrated with the base bar and can only be adjusted in height in a similar and familiar manner. The disadvantages of this group of designs are more so, especially with the need for a variable angle of the backrest or pedestal, the whole trolley becomes much heavier and much less suitable for easy stacking and transportation with other vehicles.

is In the third group, rods of any shape are integrated with the system of horizontally moving Scissors. In addition, such rods do not, in principle, allow adjustments to the inclination of the backrest in some embodiments; however, solutions of the smaller longitudinal adjustability of the integral pedestal are known, making the adjustment of the driver's knee bending angle possible up to a value of up to 10 °.

The fourth group includes rods of different types of special-purpose wheelchairs, which can be folding or folding. They offer many different technical solutions in terms of the possible adjustability of the backrest, footrests and armrests. However, due to their significantly increased weight and lack of folding, such carts are not widely used individually.

The basic reason for the absence of the technical structures that would allow the construction of optimally light and foldable carts with adjustable parameters of the angles and lengths of the backrests, armrests and supports of the supports in the first three described groups is the fact that the lateral supporting frames of the wheelchairs are generally made of straight segments of pipe to which we weld or otherwise secure the supports of other wheelchair components. These include e.g. also reduced front wheels, which must be free to rotate vertically and horizontally, allowing the cart to be freely maneuvered. However, the technical problem of securely securing an additional element to a flat metal tube requires either installing it using indivisible ties such as welding or bonding, or detachable ties such as screwing. At the same time, the indivisible connection does not allow the change of setting or the clamping delay, and the detachable connection - screwing, which allows a later change of the original setting, requires the opening of several openings in the body of the pipe, which are mechanically weakened. Although the articulated systems for securely clamping flat tubes are known in the art, such systems are in most cases unsuitable because of their weight and dimensions for wheelchair mounting.

The basic technical problem of constructing a lightweight and mechanically resistant folding wheelchair stick on which all the added elements (pedestals, backrest, armrests and front wheels) can be fully adjustable, therefore, comes from the structural and supporting elements of the basic stick or side support frames of the trolley . As a result, standard wheelchairs are made without the possibility of changing the angle of the pedestals and the backrest, resulting in millions of users, with long-term use of the wheelchair, causing significant degenerative changes in the veins, e.g. below the knees and hips, the appearance of decubitus in severely disabled people, and other additional defects in the spine and entire skeleton.

The subject of the invention is a folding wheelchair carrying rod with separately adjustable pedestals and a backrest that allows the construction of a folding metal wheelchair in a steel, aluminum or alloy tubular construction with the highest possible mechanical load with the lowest possible total weight. The most important difference of the carrier rod according to the invention in relation to the prior art is indicated separately or. the radius curved shape of the base tubular supports to which the clamping brackets are fastened with the made radius fixing grooves as

The 2o mounting completely prevents them from radially rotating around the rod support pipe.

The invention is presented in two exemplary embodiments of arches of a shaped support rod.

The invention will be explained in more detail on the basis of pictures, of which it shows:

Fig. 1 is a side elevation view of the arches of a molded folding wheelchair carrying rod with separately adjustable pedestals and a backrest of the first embodiment;

Figure 2 is a side elevation view of the arches of a shaped support bar and a folding wheelchair with separately adjustable pedestals and a backrest according to another embodiment.

The illustrated figures show the folding wheelchair carrier rods in two typical embodiments. Of course, individual variant solutions consisting of individual elements of each embodiment shown are also possible, which does not limit the essence of the present invention. The essential feature and novelty of the present embodiments of the support rod according to the invention are indicated separately or. the radius-curved shape of the parts of the base tubular supports 1, 1 'to which the adjustable pedestals and the backrest are secured by means of carrier brackets with fabricated radius fixing grooves, which, upon attachment, completely prevents their radial rotation around the basic tubular supports 1,1', preferably at the front and the rear part of the two side frames of the support rod to which the adjustable pedestals and the backrest are secured by means of support clamps with manufactured radius or combined fixing grooves, which, upon attachment, prevents their radial rotation around the basic curved tube supports in the arch.

The carrier rod of a folding wheelchair with the separately adjustable pedestals and the backrest according to the first embodiment is shown in Figure 1. The shape of the carrier rod is characterized by the passage of the tubular carrier 1 through a curved quarter-circle section in a region of rear wheels in straight section, which turns in the front of the trolley in a semi-circular fashion and continues in a straight section again to the initial part, where it is connected in a known manner (screwed, welded, glued, etc.). Approximately 1/3 of the loops of tube 1 thus formed are particularly rigidly interconnected. This connection A serves as an additional support for the rear wheels of the trolley. The pedestals 2 and the backrest 3 can be easily attached to the bracket 1 by means of double support brackets 4 with elaborate radius grooves or support brackets 5 with a combination of radius and straight grooves. With the tubular carrier 1 thus formed, all the sections along the carrier where it is necessary to attach the pedestals 2 and the backrest 3 are made in the radius, which enables very precise individual adjustment of both the backrest 3 and the pedestals 2, which is possible by means of the supporting ones of rods 2a, which also has a semicircular end, and of the bearing clamps 4 with elaborate radius grooves, are particularly precisely adjusted in both horizontal and vertical directions. Similarly, the front control wheel 6 and the flexible connection 7 of the scissor design which interconnect two tube supports 1 into the carrier rod of a folding wheelchair can also be fitted to the tube carrier 1.

Arms-shaped wheelbarrow support rods with separately adjustable pedestals and backrest according to the second embodiment are shown in Figure 2. The shape of the support bar is characterized by the passage of the tubular support T through a curved io semicircular shaped part in the rear wheel mounting area in a straight section that turns in the front of the trolley in a semi-circular fashion and continues in a straight section again to the initial semi-circular section. Approximately 1/3 of the tubular support T thus formed, the two straight sections are particularly rigidly interconnected. This connection A serves as an additional support for the rear wheels of the trolley. The pedestals 2 and the backrest 3 can be easily attached to the support T by means of support brackets 4 with fabricated grooves, or support brackets 6 with combined mounting grooves, as in the previous case.

With the 1.1 'brackets so designed, or combinations thereof, it is easy to produce a folding wheelchair carrier with a favorable load-bearing ratio of the load-bearing frame itself. Due to the separately formed parts of the load-bearing frame, where the parts of the trolley (backrest, pedestals, front wheel) are attached to the frame, it is possible to easily adjust and adjust them to the most favorable individual position for each wheelchair user.

For:

MARKOVIC Vladimir

Claims (4)

PATENT APPLICATIONS 5 1. A folding wheelchair carrying rod with separately adjustable pedestals and a backrest, characterized in that it consists of two separately or. at both opposite ends, the radius curved base tubes (1, T) interconnected with io by means of a flexible connection (7) of a scissor design. 2. Folding wheelchair carrying rods with separately adjustable pedestals and backrest, according to claim 1, characterized in that they are separately or separately. adjustable pedestals (2) and backrest (3) attached to the radius curved portions of the base tube supports (1, T) by means of support brackets (4) with fabricated radius fixing grooves or support brackets (5) with combined grooves. A folding wheelchair carrying rod with separately adjustable pedestals and backrest according to claims 1 and 2, characterized in that 4. 4. that the tubular support (1) passes through a curved quarter-shaped section in the region of rear wheels placement into a straight section, which turns half-roundly at the front of the trolley and continues in a straight section again to the starting part, where it is connected in a known manner, wherein approximately 1/3 of the loops of the tubular support (1) thus formed are both particularly rigidly interconnected by the connection (A). A folding wheelchair carrying rod with separately adjustable pedestals and backrest, according to claims 1 and 2, characterized in that the tubular support (1 ') passes through a curved semicircular shaped part in the area of rear wheels placement in a level part which extends in front turn the trolley half-circularly and continue in a straight section again to the initial semicircularly shaped part, with approximately 1/3 of the loops of the tube support (1) thus formed, the two parts being particularly rigidly interconnected by the connection (A).