DE102005048373A1 - Faltrollstuhlrahmen - Google Patents

Abstract

The folding wheelchair frame has, on each side, a chassis frame (3) supporting the front steerable wheels (1) and rear wheels (2). There is a foldable seat frame attached to each side chassis frame. A side frame (4) is provided connected to a scissors linkage (5) to support the seat. The side frames are positioned inwardly of the chassis frames and can be height adjustable.

Description

The The invention relates to a folding wheelchair frame.

Out The prior art are very different embodiments Previously known by wheelchair frame. There is a distinction between foldable folding wheelchairs as well as rigid wheelchairs. In folding wheelchairs the two side frames are approachable. This is done by means of a Scissors. The two side frames each carry a front wheel and a rear wheel and the associated seat or seat back, Push handles and the like.

at the well-known folding wheelchairs proves to be disadvantageous that the adjustment of the seating position as well as the adaptation of the folding wheelchair to different needs the wheelchair user is limited and possible Adjustment work required.

The Allow known from the prior art rigid wheelchairs often an individual adjustment of the seat height, the seat depth and the tilting (Inclination) of the seat. These wheelchairs are not or only in very limited Scope collapsible and therefore difficult to transport.

Of the Invention is based on the object, a Faltrollstuhlrahmen to create which with a simple construction and easier, cheaper Manufacturability allows an individual adjustment of the seating position.

According to the invention Problem solved by the feature combination of the main claim, the under claims show further advantageous embodiments of the invention.

According to the invention is thus provided that the folding wheelchair frame consists of two frame components exists, namely the chassis frame and the seat frame. Since it is a folding wheelchair frame is on each side (right and left) each a chassis frame intended. The same applies to the right and the left seat frame. The two seat frames are over one Scissors connected, as known from the prior art in folding wheelchairs is.

The creates solution according to the invention thus the possibility by the respective assignment of the chassis frame and the seat frame make the most different settings of the seating position to be able to without thereby affecting the chassis construction itself. The chassis frame carries a steerable front wheel (steering wheel) and a rear wheel. The center distance as well as the height and positioning the steering wheels are thus individually adjustable on the chassis frame. The same applies to the position of the bearing of the rear wheel.

Of the Chassis frame thus provides the basic structure, which the Handling characteristics as well as the driving geometry of the folding wheelchair frame certainly.

At the chassis frame according to the invention the foldable seat frame is mounted. This can be adjusted individually relative to the chassis frame, around the seat height and adjust the seat depth to the respective requirements. It is also possible, to frame the seat frame relative to the chassis frame or in the inclination to adjust.

In better Embodiment of the invention is provided that the side frame is mounted on the inside of the chassis frame. This will allows that the two constructions are essentially independent of each other can be trained and are adjustable or adjustable accordingly.

In especially cheaper Embodiment of the invention is provided that the side frame means height adjustable at least one bearing element is mounted on the chassis frame. In a favorable development is provided that the bearing element is designed to be pivotable. Thus, both the seat height as well as the seat tilt (tilt) set by means of the bearing element accordingly be, without this for other components or the like would be required. Even the adjustment itself can be done easily by yourself untrained Persons take place.

Of the Side frame is preferably designed U-shaped. He includes Thus, a front strut and a rear strut, which by a lower strut are connected. Through the front and the back Strut it is possible provide two bearing elements. This will increase the stability of the folding wheelchair frame considerably increased. In comparison, the most varied Setting variants.

According to the invention, the scissor bearing is preferably mounted on the side frame so that it can be adjusted in height. Preferably, the bearing of the scissor bearing takes place on the front strut of the side frame. However, it is also possible to attach the scissor bearing on the rear strut or the lower strut. Due to the height-adjustable storage of the shear bearing can be very simple How to set the seat width, since the height of the scissor bearing sets the opening degree of the scissors and thus the distance between the two side frames in ready state.

Allowed according to the invention The folding wheelchair frame thus diverse settings that at conventional Frame structures, are not possible with folding wheelchairs or rigid wheelchairs. Consequently is suitable Falrollstuhlrahmen the invention especially for Wheelchairs. The adjustability does not set the use of additional Components and the replacement of components. Rather, it can the folding wheelchair frame is variable from its own design be adjusted.

The inventive construction of the chassis frame allows it to make this from a strut or from a tube. This results on the one hand a high level of Stability. To the others result in low production costs.

By independence the chassis frame of the seat frame, it is possible to make these interchangeable, so that, for example, when using different chassis frames different Suspensions can be realized without the rest of the construction of the wheelchair would be affected.

By the embodiment of the invention Chassis frame this is still trainable so that on telescopic tubes or similar completely can be waived. This plays especially in the lower Pivot bearings for the steering wheels one advantageous role.

Of the Wheelchair user thus sits completely in the seat frame. For this this advantageously has a footboard, which on the Seat frame is stored. In the same way, the seat frame with the backrest Mistake.

According to the invention can The chassis frame laterally each mounted a wheel cover or armrest become. The same applies to push rods or anti-tippers. Alternatively, it is also possible, push rods or backrest bars to provide on the seat frame. Thus, the invention results in a variety of different design variants.

in the Below, the invention is based on an embodiment in connection described with the drawing. Showing:

1 a perspective view of a wheelchair according to the invention using the Falrollstuhlrahmens invention,

2 a perspective view, analog 1 , without seat,

3 a perspective view in reverse view analog 2 , and

4 a side view of the in the 2 and 3 shown Faltrollstuhlrahmens.

The wheelchair according to the invention comprises two front steering wheels 1 as well as two rear wheels 2 , The steering wheels 1 and rear wheels 2 are each on a side chassis frame 3 appropriate. For this is the chassis frame 3 , in particular from 4 can be seen, bent and cranked. It consists of a single tube, in the vertical lower free end of a not shown in detail bearing for the steering wheel 1 is introduced. For storage of the rear wheel serves an adjustable bearing 14 , which is horizontally displaceable in order to adjust the center distance (see, for example 2 ).

The seat frame according to the invention by two parallel side frames 4 formed, which within the two chassis frames 3 arranged and by means of bearing elements 7 are attached. The attachment is detachable. The figures show a variety of holes or recesses to allow for variable adjustment. The bearing element 7 is pivotally adapted to tilt or tilt the seat frame and the associated side frames 4 relative to the two chassis frames 3 to realize.

The two side frames 4 are each by a lower strut 9 , a front strut 10 and a rear strut 11 educated. At the front strut 10 is a scissor bearing 12 mounted height adjustable, on which a pair of scissors 5 is stored, which with an upper seat stay 8th connected is. The seatstay 8th sits in ready state (see for example 2 ) in not individually designated scissor bearings, which form a snap connection or the like, and at the same time with a knee lever for the secure positioning of the scissors 5 in open, ready to use condition.

On the two seatstays 8th is a seat in the usual way 6 stored. Upper extensions of the rear struts 11 store a foldable backrest 15 as well as push bars 16 , The wheelchair also includes wheel covers 17 , which adjustable, for example, on the rear strut 11 as well as the chassis frame 3 can be arranged.

The invention is not limited to the embodiment shown, but rather arise within the scope of the invention varied Abwandlungs- and modification options, in particular with regard to the design and dimensioning of both the chassis frame 3 as well as the page frame 4 as well as by this and by this guaranteed adjustment.

1

steering wheel

2

rear wheel

3

chassis frame

4

side frame

5

scissors

6

Seat

7

bearing element

8th

seat stay

9

Lower strut

10

Front strut

11

Rear strut

12

stay bearing

13

footboard

14

camp

15

backrest

16

push bar

17

wheel cover

Claims (7)

Faltrollstuhlrahmen each with a side, a front steering wheel ( 1 ) and a rear wheel ( 2 ) supporting chassis frame ( 3 ), as well as with one on the two chassis frame ( 3 ) detachably mounted, foldable seat frame, which each have a side frame ( 4 ), which by means of scissors ( 5 ) and a seat ( 6 ) wear. Faltrollstuhlrahmen according to claim 1, characterized in that the side frame ( 4 ) on the inside of the chassis frame ( 3 ) is stored. Faltrollstuhlrahmen according to claim 1 or 2, characterized in that the side frame ( 4 ) by means of at least one bearing element ( 7 ) is mounted vertically adjustable. Faltrollstuhlrahmen according to one of claims 1 to 3, characterized in that the side frame ( 4 ) by means of at least one bearing element ( 7 ) is pivotally mounted. Faltrollstuhlrahmen according to one of claims 1 to 4, characterized in that the side frame ( 4 ) a lower strut ( 9 ), a front strut ( 10 ) and a rear strut ( 11 ). Faltrollstuhlrahmen according to claim 5, characterized in that a scissor bearing ( 12 ) height adjustable on the front strut ( 10 ) is stored. Faltrollstuhlrahmen according to one of claims 1 to 6, characterized in that on the seat frame, a Fußbrett ( 13 ) is stored.