DE202006004668U1 - Bicycle-wheelchair combination, has handholds connected to handlebar by fasteners such that turnability of wheelchair around swivel axis is made possible, where parallelogram displacement of fasteners against handlebar is realized - Google Patents

Abstract

The combination has handholds detachably connected to a handle bar by fasteners (7), such that turnability of a wheelchair around a swivel axis relative to a bicycle is made possible. The fasteners are supported in a joint such that a parallelogram displacement of the fasteners against the handlebar is realized. A cross beam is detachably fastened between the handholds. A front wheel fork is swivelably fastened on a connecting prop.

Description

The The invention relates to a mountable device for connecting a Bicycle with a wheelchair.

[State of the art]

Known are different variants where a bicycle drive part with only one wheel is coupled to a wheelchair. These are special constructions for the Bicycle drive required. Commercially available bicycles can not be used.

From the DE 37 44 774 C2 a combination vehicle is known from a wheelchair and a bicycle, in which the connection of the wheelchair with the bike via the handlebar, the handlebar and the fork foot of the bicycle to steer the wheelchair.

Of the Disadvantage of this solution is that for steering the front wheels of the wheelchair in each Relieved case, d. H. have to be raised. When cornering reduced itself, by the direct coupling of the axis of rotation of the wheelchair with the steering axle of the bicycle, the thrust exerted by the bicycle on the wheelchair.

OBJECT OF THE INVENTION

task the invention is to provide a bicycle wheelchair combination which is easy and quick to assemble, to different types of wheelchairs and almost all bicycles can be mounted, the steering freedom of the bicycle driver also at ground contact all four wheels of the Wheelchair does not restrict and ensures the full thrust of the bike when cornering.

The Task is solved with the features of the first claim. advantageous Further developments and embodiments are the subject of the dependent claims.

The Connection of a bicycle with a wheelchair is realized in such a way which decouples the thrust from the applied steering force is.

For the connection The front wheel of the bicycle is removed from the front fork and the front area of the bike via fasteners, both on the handlebars as well as on the main frame of the bicycle, with the wheelchair coupled.

At the Handlebars are the two wheelchair handle tubes used to push the Wheelchair's are necessary over Connecting elements of a connecting device on the handlebar in such a way solvable and hinged, that on the one hand a pivoting of the wheelchair about a horizontal pivot axis relative to the bike is possible and on the other hand, the connecting elements are mounted in joints are that a parallelogram shift of the fasteners across from the handlebar is feasible.

By the pivoting about the horizontal pivot axis can optionally the front smaller wheels of the wheelchair are placed on the road or raised.

The Parallelogram shift is necessary because the axis of rotation of the Wheelchair does not coincide with the axis of rotation of the steering device of the bicycle.

The Connection with the main frame of the bike is about one Connecting strut made on the wheelchair to a cross member in the middle between the two wheelchair handle tubes in the area of the height of the axles held the wheelchair drive wheels is.

Of the crossbeam is preferably detachable between the two wheelchair handle tubes and height adjustable attached.

The Connecting strut is frictionally and preferably releasably attached to the main frame and on the crossbeam over a Joint connected to the movements about the longitudinal axis of the cross member and about an axis parallel to the inclination of the wheelchair handle tubes permits.

In addition is it is advantageous for reasons of stability, the front fork is rotatably mounted on the connecting strut.

For tapping the front wheels of the wheelchair, it is also advantageous to the cross member when Turning around its longitudinal axis in two positions either in the joint for holding the connecting strut or to fix on the wheelchair handle tubes.

The Bicycle wheelchair combination has been designed to help the disabled and non-disabled with bike and wheelchair sharing recreational activity can.

through the connecting elements according to the invention can be a commercial one Bike to every popular Wheelchair to be attached. This will make the bike and wheelchair a vehicle unit steered by the cyclist.

A secure attachment is guaranteed.

bicycle and wheelchair can at any time again resolved from each other so that the bike and the wheelchair are used separately can.

The Assembly is quick and easy. Also a transport z. b. in the car is easy and simple.

The Bicycle wheelchair combination is in relation to comparison products economical in the production and for The user only needs to purchase the connecting elements.

Of the Cyclist is not in his freedom of use when using limited.

[Examples]

With reference to a schematic drawing, 1 become the structure and operation of the compound of the invention between a bicycle 1 and a wheelchair 2 explained in more detail.

The front wheel of the bicycle 1 gets out of the front fork 3 removed and then the front area of the bike 1 over fasteners 7 on the handlebar 8th and a connection strut 13 to the main frame 12 of the bicycle 1 for coupling to the wheelchair 2 in addition a crossbeam 11 (only indicated in the drawing) between two wheelchair handle tubes 4 of the wheelchair 2 must be mounted.

At the handlebar 8th become the two wheelchair handle tubes 4 over the fasteners 7 a connection device so releasably and via joints 9 attached, on the one hand, a pivoting of the wheelchair 2 about a horizontal pivot axis relative to the bike 1 is possible and on the other hand, the fasteners 7 so in the joints 9 are stored, that a parallelogram displacement of the connecting elements 7 opposite the handlebar 8th is feasible.

The connecting strut 13 connects to the main frame 12 of the bicycle 1 here and the cross member 11 is in the middle between the two wheelchair handle tubes 4 in the range of the height of the axles 10 the wheelchair drive wheels 5 held as well as releasably and height adjustable attached.

The connecting strut 13 must be with the main frame 12 be positively connected. The connection to the cross member 11 via a joint 14 that movements around the longitudinal axis of the cross member 11 and about an axis parallel to the inclination of the wheelchair handle tubes 4 allows.

For stability reasons, the front fork 3 on the connecting strut 13 rotatably mounted.

For tilting the front wheels 6 of the wheelchair 2 becomes the crossbeam 11 when rotating about its longitudinal axis in two positions either in the joint 14 or at the attachment points on the wheelchair handle tubes 4 fixed.

1

bicycle

2

wheelchair

3

front fork

4

Wheelchair handle tubes

5

Wheelchair drive wheels

6

little one wheelchair wheels

7

fasteners

8th

handlebars

9

joints the connection device

10

axes the wheelchair drive wheels

11

crossbeam

12

main frame

13

connecting strut

14

joint crossbeam

Claims (5)

Bicycle wheelchair combination with a bicycle ( 1 ), in which the front wheel of the front fork ( 3 ) and with a wheelchair ( 2 ), the two wheelchair handle tubes ( 4 ), large wheelchair drive wheels ( 5 ) and small front wheels ( 6 ), via the wheelchair handle tubes ( 4 ) with the front portion of the bicycle ( 1 ), wherein the wheelchair handle tubes ( 4 ) via connecting elements ( 7 ) a connecting device on the handlebar ( 8th ) a bicycle steering device are releasably secured such that the pivoting of the wheelchair ( 2 ) about a horizontal pivot axis relative to the bicycle ( 1 ) and the wheelchair ( 2 ) is steerable together with the bicycle steering device, characterized in that - the connecting elements ( 7 ) of the connecting device in joints ( 9 ) are mounted, that a parallelogram displacement of the connecting elements ( 7 ) opposite the handlebar ( 8th ), - on the wheelchair ( 1 ) between the two wheelchair handle tubes ( 4 ) in the area of the height of the axes ( 10 ) of the wheelchair drive wheels ( 5 ) a cross member ( 11 ) between both wheelchair handle tubes ( 4 ) is releasably secured and - between cross member ( 11 ) and main frame ( 12 ) of the bicycle ( 1 ) in the bicycle longitudinal direction a connecting strut ( 13 ), wherein the connecting strut ( 13 ) on one side frictionally with the main frame ( 12 ) and on the other side with the middle of the cross member ( 11 ) via a joint ( 14 ), so that movements about the longitudinal axis of the cross member ( 11 ) and about an axis parallel to the inclination of the wheelchair handle tubes ( 4 ) are executable. Bicycle wheelchair combination according to claim 1, characterized in that the front fork ( 3 ) on the connecting strut ( 13 ) is rotatably mounted. Bicycle wheelchair combination according to claim 1, characterized in that the cross member ( 11 ) when rotating about its longitudinal axis in two positions in the joint ( 14 ) is fixable. Bicycle wheelchair combination according to claim 1, characterized in that the cross member ( 11 ) when turning about its longitudinal axis in two positions on the wheelchair handle tubes ( 4 ) is fixable. Bicycle wheelchair combination according to claim 1, characterized in that the connecting strut ( 13 ) on the main frame ( 12 ) is releasably attached.