DE202008013634U1 - Wheelchair and handbike in a vehicle - Google Patents

Abstract

Wheelchair and handbike in a vehicle, convertible by the user alone while sitting on the vehicle, characterized in that the front drive wheel (3) together with foldable front fork (11) in wheelchair mode ( 1 ) can be stowed under the seat (20) suspended on a hook (23).

Description

The Handbike is a means of transportation in which by cranking with the power of the poor over the chain, Belt or cardan is transmitted to the drive wheel. With the three-wheeled handbikes There are adaptive bikes as well as racing and touring bikes. With the racing bikes can be higher Achieve speeds while improving road holding.

handbiking offers disabled people a high level of mobility and the Possibility, to spend time together with family and friends.

adaptive bike

The Adaptive bike is mounted in front of an existing wheelchair. mostly This is done with an easy-to-use coupling device. This has the advantage that you can uncouple it quickly and always has his wheelchair with him.

Lying Handbike (racing or touring bikes)

in the Recumbent bike takes a more or less lying position one. The power development comes here almost exclusively the arm and shoulder muscles. The big advantage of this lying Position is the aerodynamics.

Of the The advantage of the adaptive bike is its flexibility. The disadvantages are therein to see that the driver has a high seating position and thereby offers a high air resistance. In addition, the Vorspannrad at inactivity be turned off and is therefore not always ready. The advantage of Recumbent bikes are in the fast, power-saving locomotion. The disadvantage is that the driver does not drive without his vehicle leave foreign aid and can not carry an everyday wheelchair, thus can not move in closed rooms.

Of the in claim 1 protection invention, the problem is based to combine the advantages of the two described vehicles and to create a new vehicle with which the wheelchair user agile in closed or spatially limited spaces, as well can move quickly and physically on medium distances. Further It is important that the user does not use the vehicle during a conversion leave and can make the remodeling self-sufficient.

This Problem is solved with the features listed in protection claim 1.

With The invention achieves that the user, as needed, his vehicle quickly and independently from the wheelchair in a handbike and vice versa, without leaving the vehicle got to. The user is thus flexible on the move, that is, he can over longer Move distances quickly and in closed or confined spaces clear the dimensions his vehicle to a common, reduce compact wheelchair size.

An embodiment of the invention will be described with reference to 1 to 8th explained. Show it:

1 Vehicle in folded state (wheelchair mode) with the drive wheel inactive suspended under the seat

2 Vehicle in unfolded state (Handbikemodus)

3 At sight

4 - 8th Movement scheme of the folding process

In the 4 - 8th the sequence of movements during the conversion from the wheelchair to the recumbent bike is shown schematically.

4 shows the driver sitting on the wheelchair. The drive wheel ( 3 ) is under the seat ( 20 ) stowed away.

5 shows how the front drive wheel ( 3 ) with half unfolded front fork ( 11 ), passed between the legs and through the outwardly opened footrests, forward. The legs can already be in the foot straps ( 19 ) are stored. They are automatically carried along during the folding process.

6 shows how the front fork ( 11 ) is fully deployed and the cardan shaft ( 15 ) is pulled out.

7 shows how by operating the drive mechanism with the hand pedals ( 16 ) The driver now pulls the vehicle apart automatically. This unfolds automatically. The seat ( 20 ) runs approximately parallel to the ground on two rails ( 24 ) on the frame ( 4 ) down. The split backrest ( 22 ) folds apart, doubles its length and is supported by a strut ( 25 ) held in position. When lowering the driver at ground level, a tensioning device is tensioned, which is located in the pivot point ( 6 ) is located. By springing back this tensioning device, the startup of the user back to wheelchair level is facilitated. This can be done by tensioning a rubber band between frames ( 4 ) and seat ( 20 ) get supported.

8th shows the driver sitting with his legs stretched out on the recumbent bike. The legs rest in the foot straps ( 19 ). The support wheels ( 2 ) are released and folded up so that they do not roll when driving in Handbikemodus.

In the 1 - 3 is the wheelchair with big rear wheels ( 1 ), small training wheels ( 2 ) and a smaller drive wheel ( 3 ). The rear wheels ( 1 ), as well as the training wheels ( 2 ) are height adjustable or hinged on the frame ( 4 ) appropriate. The frame ( 4 ) is U-shaped so that during inactivity the drive wheel ( 3 ) under the seat ( 20 ) Finds space. On the inner edges of the frame ( 4 ) is a catch ( 23 ) is provided, on which the front drive wheel can be suspended in wheelchair mode. On the top of the legs of the frame ( 4 ) are two rails ( 24 ) formed at which the seat ( 20 ) when folding over small roles ( 21 ) can be lowered. The frame ( 4 ) is made in the embodiment of carbon to save weight, but it can also be made in other materials such as aluminum pipe or steel pipe.

A movable, adjustable length bracket ( 5 ), is at the bottom of the frame ( 4 ) at a pivot point ( 6 ) attached. The fulcrum ( 6 ) can be unlocked by releasing levers. The coat hanger ( 5 ) can be locked again at a different angle to fix the vehicle in lying position.

At the lower part of the stirrup ( 5 ) are footrests ( 7 ) height adjustable attached. They can also be turned apart to the sides. At the upper part of the temple ( 5 ) are two brake levers ( 26 ), with which the front and rear wheel brake can be operated. They can also be used as a parking brake. In the middle upper area of the temple ( 5 ) is a plate ( 8th ) on a hinge ( 9 ) with the bracket ( 5 ) connected. At this plate ( 8th ) is via an inclined steering axle ( 10 ) the front fork ( 11 ) appropriate. This is divided into two parts and can be accessed via a pivot point ( 12 ) are folded together. At the end of the fork ( 11 ) there is a receptacle for the front wheel ( 13 ) and the powertrain. This consists of a length-adjustable cardan shaft ( 15 ), the two hand-held synchronous or asynchronous ( 16 ) with a hub gear ( 17 ) connects. The change in length of the cardan shaft ( 15 ) can be used without tools with two large adjusting screws ( 18 ). In addition, at the front fork ( 11 ) two foot straps ( 19 ) appropriate. These consist of curved tubes, which are length adjustable to push in and out and hang on which textile bands in which the driver's feet can be placed.

Claims (12)

Wheelchair and handbike in a vehicle, convertible by the user alone while sitting on the vehicle, characterized in that the front drive wheel ( 3 ) together with foldable front fork ( 11 ) in wheelchair mode ( 1 ) under the seat ( 20 ) on a hook ( 23 ) can be stowed suspended. Wheelchair and handbike after one of the previous ones claims characterized in that the frame is U-shaped and open to the front. Wheelchair and handbike according to claim 1, characterized in that the front fork ( 11 ) on a movable plate ( 8th ) together with the steering axle ( 10 ) via a hinge ( 9 ) on a bracket ( 5 ) is pivotable forward. Wheelchair and handbike according to one of the preceding claims, characterized in that at the end of the front fork ( 11 ) Foot straps ( 19 ) Lengths adjustable and hinged are attached. Wheelchair and handbike according to one of the preceding claims, characterized in that the front wheel ( 3 ) with a hub gear ( 17 ) provided with a length adjustable propeller shaft ( 15 ), which are tool-free with set screws ( 18 ) is to adjust. Wheelchair and handbike according to one of the preceding claims, characterized in that the drive with manual drive via synchronously or asynchronously connected hand pedals ( 16 ) is driven. Wheelchair and handbike according to one of the preceding claims, characterized in that the seat ( 20 ) in a parallelogram shift over small rollers ( 21 ) on rails ( 24 ) and joints ( 27 ) on a bracket ( 5 ) descends while remaining approximately parallel to the ground. Wheelchair and handbike after one of the previous ones claims characterized in that the backrest is divided into two and getting morphed from wheelchair to recumbent bike automatically unfolds and occupies twice the size. Wheelchair and hand bike according to one of the preceding claims, characterized in that the backrest by a movable strut ( 25 ) is held in an upright position, respectively. Wheelchair and handbike after one of the previous ones claims characterized in that over a tensioning device when lowering the driver a bias is built, which allows him to re-move his body into the Wheelchair position relieved. Wheelchair and handbike according to one of the preceding claims, characterized in that training wheels ( 2 ) are releasably attached and are pivotable upwards so that they do not touch the road in the manual mode. Wheelchair and handbike according to one of the preceding claims, characterized in that footrests ( 7 ) are movably mounted and pivotable outwards or upwards.