SI9800077A - Wheel - Google Patents

Abstract

Subject of the invention is a wheelchair or other manually or engine driven transporting device wheel with three or more wheels for the transportation of people or goods. The wheel according to the invention is intended to be attached to vehicles equipped with wheels or other transportation means as a free control wheel, where the control is performed by a separate drive of the left and right driving wheel, while the wheel itself offers support and allows any changes to the driving direction. The wheel according to the invention basically consists of two or more axial firmly connected disk-shaped panels (1, 1', 1'',...1n), which feature along their edges at even distance rotating cylinder elements (2, 2', 2'',...2n) where the rotating direction of the cylinder elements (2, 2', 2'',...2n) is at a right angle to the driving direction of the disk-shaped panels (1, 1', 1'',...1n). The individual disk-shaped panels (1, 1', 1'',...1n) are staggered in such a way that the cylinder elements (2, 2', 2'',...2n) on the scarf joined disk-shaped elements (1, 1', 1'',...1n) do not overlap or overlap in such a way that in side view of the whole wheel, the cylinder elements (2, 2', 2'',...2n) along their external circumference always forms a virtual continuous circular line.

Description

KOLO

The subject of the invention is a wheelchair wheel or other hand or motor driven transport device with three or more wheels for the carriage of persons or goods. The bicycle according to the invention is intended for mounting on vehicles equipped with wheels or other means of transport as a free steering wheel, the steering is carried out with a separate drive of the left and right drive wheels, and the steering wheel provides support and also allows a free change of driving direction. The invention belongs to Class B 60 B 19/12 of the International Patent Classification.

A technical problem successfully solved by the present wheel according to the invention is such a structural solution that eliminates the disadvantages arising from the double-clamping of a conventional freewheel wheel which must be on one

2o side-by-side with respect to its horizontal axis of rotation and additionally along the vertical axis of its mounting fork.

The technical problem extends also to the construction of such a freely rotating steering wheel which, when double-hung, does not have angularly displaced load-bearing forks. In this way, the forks, which are designed in this way, rotate the wheel-to-wheel mounting point along the vertical axis and thus change the stability of the entire vehicle. At the same time, the rotation of the forks of the wheel along the vertical axis requires structural adjustment throughout the vehicle, since when rotating the vertical axis it takes up considerably more space than the dimension of the wheel itself, which rotates only along its horizontal axis.

The designs of free steering wheels differ mainly in their structural dimensions, the type of wheel itself and the way it is mounted, since in most cases it is a wheel that has an additional vertical bearing on its load fork. The only exceptions are some structures in diameter of extremely small wheels, which are designed as a ball, which, with a single axial - radial bearing with its lower part, rests on a rolling stock.

In addition to those described in the prior art, there are also some special types of wheels that allow transverse movements without vertical mounting, but such wheel designs are by no means suitable for practical applications in commercial vehicles and trolleys.

In the practical construction of some vehicles and trolleys in particular, conventional freely steered wheels cause major problems for the overall construction and its running characteristics. A typical example is a wheelchair, which in its most common versions has a pair of drive wheels attached to the front and a pair of freely steered wheels. As the pedestals or load-bearing elements of the pedestals of the driver's feet are also mounted on the front of the trolley, the practical problem is the installation of freely steered wheels, which require a lot of space for their rotation on the vertical axis and obstruct them. As a result, the main freewheel carrier must be positioned significantly more rearwards, which in turn will greatly reduce the longitudinal driving stability of the trolley, and when sideways turning, by shifting the center of gravity of the entire trolley, often causes the risk of lateral overturning when the wheels collide with an obstacle on the running surface.

The wheel according to the invention is essentially two or more axially rigidly jointed disc-shaped plates having rotatably mounted roller elements in circumferential spacing, the direction of rotation of the roller elements being perpendicular to the direction of rotation of the disk-shaped plates. The individual disc-shaped discs are offset so that the roller elements on the self-supporting disc discs do not overlap or overlap only part of their entire length, and the Wheel according to the invention is presented in three embodiments with differently mounted roller elements.

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

Fig. 1 shows an axonometric wheel of the invention consisting of two disc-shaped plates;

Fig. 2 shows a wheel according to the invention in plan and lateral view, consisting of two disc-shaped plates;

figure 3 figure 4 figure 5 figure 6 wheel according to the invention in plan and lateral view, consisting of three disc-shaped plates; showing the mounting of the roller elements according to the first embodiment of the wheel according to the invention in plan and lateral view;

showing the mounting of the roller elements according to another embodiment of the wheel according to the invention in plan and lateral view;

a representation of the mounting of the roller elements according to the third embodiment of the wheel according to the invention in plan and lateral view.

The wheel of the invention is shown in axonometric view in Fig. 1 in an embodiment consisting of two disc-shaped plates. Depending on the construction characteristics of the wheel according to the invention, it must consist of at least two disk-shaped plates 1,1 'having rotating roller elements rotatably spaced around the circumference at regular intervals. Individual variants of the roller element mounting 2 are shown in the figures from 4 to 6 and will be described in detail below.

The basic embodiment of the wheel according to the invention is based on the construction of a disk-shaped plate 20 having a circumferentially arranged roller element 2 circumferentially spaced around the circumference. When rigidly joining two or more identical disk-shaped plates 1 such that the roller elements 2 of one the disk-shaped plates 1 do not cover the roller elements 2 'of the second disk-shaped plate 1', but lie so that they cover the space between the roller elements of the adjacent disk-shaped plate to achieve, despite the rigid axial clamping of the disk-shaped plates 1,1 ', 1 ".... 1n vehicle or wheelchair due to the roller elements 2,2 ', 2" ... 2n movable also transversely to the main or. basic driving direction. The more jointed disc-shaped plates 1, the more roller elements 2 of different disc-shaped plates 1 touch the ground at one point, the greater the payload of the guided vehicle.

Figures 2 and 3 show the embodiments of the wheels according to the invention in the floor plan and in the side view, which consist of two respectively. three disc-shaped panels.

Figure 4 shows an embodiment of mounting the roller elements 2a according to the first embodiment of the wheel according to the invention to a disk-shaped plate 1 in plan and lateral view. In this embodiment, the cylindrical elements 2a are made of stiff rubber or plastic and are designed to have semi-spherical nozzles 4 already formed from their base surfaces 3, which fit into a properly shaped bearing 5 formed around the perimeter of the disc-shaped plate 1 .

Figure 5 shows an embodiment of mounting the roller elements 2b according to the second embodiment 20 of the wheel of the invention to a disk-shaped plate 1 in plan and lateral view. In this embodiment, the roller elements 2b may also be made of stiff rubber or plastic and are designed so that a shorter tube 6 is provided on each side of the roller element 2b, which provides a bearing to the ends with a specially inserted ball 7. On the inside of the tube 6 the movement of the ball 7 is limited by the material of which the roller element 2b is made. The beads 7 fit into the properly shaped bays 5 formed around the perimeter of the disc-shaped plate 1.

Figure 6 shows an embodiment of mounting the roller elements 2c according to the third embodiment of the wheel according to the invention to a disk-shaped plate 1 in plan and lateral view. In this embodiment, the roller elements 2c are made of different materials and formed in such a way that a tube 8 with a spring 9 is inserted through the roller element 2c and balls 10 are inserted at each end of the ball 10. The balls 10 fit into the properly shaped bays 5, formed around the circumference disc shaped discs 1.

In all three embodiments of the roller element 2, it is important that the clamp allows the roller element 2 to rotate smoothly and the embodiment of the roller element 2 depends on the embodiment and intended use of the wheel. The embodiments shown in this way do not in any way limit the universality of the invention of the invention and are given as possible embodiments.

In addition to wheelchair mounting, in order to improve ride stability, it is advisable to mount the wheel as front wheels on electric motor-driven wheelchairs whereby they can be used to transfer the driving torque from the rear wheels to a conventional wheel and two-wheel chains or other known means. all four wheels respectively. significantly better driving characteristics of the trolley.

The product according to the invention can be manufactured in different sizes or sizes. full wheel diameters. Therefore, in smaller versions, it is suitable for mounting on various industrial trolleys and transport equipment, or even on movable furniture and chairs. In addition, the product according to the invention is suitable for mounting on different trolleys and vehicles, and especially for those which, due to poor terrain, require improved transmission of driving power to the ground or improved driving characteristics of the entire vehicle in poor terrain. However, it is particularly important that the wheels of the invention can be mounted on a vehicle of practically any width or width. with many roller columns on the perimeter to allow safe driving even in very soft terrain and even in the snow, with very large wheel diameters according to the invention and air-inflated rollers even on water.

For:

MARKOVIC Vladimir

Claims (3)

PATENT APPLICATIONS 5 1. A wheel having an axially rotating but radially rigid joint of disc-shaped plates (1,1 ', 1', ... 1n), indicated by the stem having disc-shaped plates (1,1 ', Γ, .. . 1n) rotating roller elements (2, io 2 ', 2 ”, ... 2n) rotate around the circumference in uniform distances, the direction of rotation of the roller elements (2, 2', 2 ', ... 2n) perpendicular to the direction of rotation of the disc-shaped plates (1, T, 1 ”, ... 1n) and that the individual disc-shaped discs (1,1 ', Γ, ... 1n) are displaced in such a way that the roller elements (2, 2', 2 ', ... 2n) are placed on the disc-shaped discs (1,1 ', 1', ... 1n) no 15 overlap, while in the lateral projection of the whole wheel, the cylindrical elements (2, 2 ', 2', ... 2n) form, at their outer circumferences, a seemingly continuous circle. 2. A wheel having an axially rotating but radially rigid joint disc 20 shaped plates (1, T, 1 ”, ... 1n), indicated by the fact that the disc-shaped plates (1,1 ', Γ, ... 1n) have rotating roller elements (2 , 2 ', 2', ... 2n) where the direction of rotation of the roller elements (2, 2 ', 2', ... 2n) perpendicular to the direction of rotation of the disk-shaped plates (1,1 ', 1', ... 1n) and that the individual disk-shaped plates (1,1 ', 1', ... 1n) are spaced apart so that the roller elements (2, 2 ', 2', ... 2n) overlap the discs (1.1 ', Γ, ... 1n) 5 such that in the lateral projection of the whole wheel, the cylindrical elements (2, 2 ', 2', ... 2n) form, at their outer circumferences, a seemingly continuous circle.