CS239702B1 - Wheel castor bearing for wheelchair users - Google Patents

Abstract

Adjustable bearing of the front steering wheel and the wheelchair for the physically disabled, where the wheelchair consists of a frame on the wheels, which are mutually spaced apart. The adjustable axle allows the wheelchair to be placed with the large wheels in front or behind. When replacing the large wheels, the small steering wheels must be adjusted so that in the direction of travel the body has an inclination in the direction of travel compared to the vertical plane. This effect is achieved by the longitudinal axis of the casing (5) pressing the inclination (3) with the longitudinal axis of the extension (6) and both these parts are inseparably connected. It is necessary to create this connection right and left. The wheelchair with the above modification has perfect driving properties and stability.

Description

BACKGROUND OF THE INVENTION The present invention relates to an adjustable wheel bearing for a disabled wheelchair, wherein the wheel is adjustable in the case of a large front or rear wheel configuration to provide suitable driving characteristics, stability and user position.

Until now, folding wheelchairs for the disabled have been used which have small steering wheels either in front or rear, depending on the type of disability of the patient, the llable steering wheels are permanently attached to the support frame at the appropriate inclination.

A disadvantage of the present state is that the folding cart is usable only in a predetermined assembly. Moving the small swivel wheels in the event of a change in the position of the large wheels, either front or rear, is difficult and means a permanent intervention in the design of the truck.

The change is therefore labor intensive and costly. However, this is only understood in cases where this change is possible at all. The folding cart is therefore not universal.

These disadvantages are overcome by a solution according to the invention, wherein the adjustable wheel bearing of the wheelchair for the disabled is arranged such that the support frame is fitted with a pair of front wheel and a pair of rear wheels. The two wheel pairs are interchangeably spaced apart. The small steering wheels are seated in the fork.

The fork is fitted with a Sepo so that the wheel of this pin is rotated. The bolt is seated in the housing to the right, or both have a slope towards the vertical plane in the direction of travel. The body, both right and left, consists of a housing to which the attachment with at least two connecting means is fixedly attached. The longitudinal axis of the housing and the longitudinal axis of the extension form an acute angle. The right and left bodies are a mirror image.

An advantage of the arrangement according to the invention is that by moving the small steering wheels inside the support frame a smaller carriage width is obtained. If the large wheels are moved forward, the position of the swivel wheels can be changed so that the longitudinal axis of the canvas is inclined in the direction of travel with the vertical plane.

An example of an embodiment of the invention is shown in the accompanying drawings, in which Fig. 1 shows a schematically shown carriage in a frontal position where the large wheels are located at the rear; Fig. 4 shows the same carriage where the big wheels are located at the front; Fig. 5 shows the right side housing in a schematic view; Fig. 6 shows the same housing as seen from the side of the fastening means; Fig. 7 shows the housing 8 shows the same housing with the fastening means side.

The universal foldable wheelchair consists of a support frame consisting of a pair of sidewalls connected to each other by scissors. The support frame is seated on a pair of large wheels and a pair of small steering wheels having variable pitch. Furthermore, the supporting frame is provided with a pair of footplates, a pair of armrests and a backrest.

i l

The small steering wheels are seated in the head. The fork is a swivel wheel of a vertical axis. The vertical axis is housed in the right housing & the other side in the left housing 10. Both housings X, X2. they have a negative inclination in relation to the vertical plane 6 in the direction of travel g. The housing X, 10 consists of a sheath 6, for example a tube, to which the extension 6, for example Jflckel 40 x, 2 x 2 with two connecting means »is fixedly connected. pin screws. The longitudinal axis £ of the skirt podél and the longitudinal axis rají form an inclination to one another. The inclination of the right and left bushings is reversed, i.e. + 34 °.

The invention can be used in the construction of wheelchairs in the medical, engineering, etc. industry.

Claims (4)

Adjustable steering wheel bearing for a disabled wheelchair, the support frame of which is fitted with a pair of front wheels and a pair of rear wheels, the two pairs of wheels being variable spaced apart, characterized in that the small steering wheels seated in a forked fork are rotatably mounted on the wheels of this pin, which is seated in the right and left body (1, 10), and both body (1, 10) have a slope (3) with respect to the vertical plane in the direction of travel. Adjustable bearing according to claim 1, characterized in that the right and left housing (1, 10) consists of a housing (5) to which the extension (6) with at least two connecting means (7) is fixedly connected, the longitudinal axis the housing (8 ') and the longitudinal axis of the extension (9) are below the inclination (3). Adjustable bearing according to claim 1, characterized in that the right and left housing (1, 10) are mirror-identical. AND Adjustable bearing according to claim 1, characterized in that the inclination (3) is in the range (3 v, 0 °).