DE10045102B4 - Wheelchair with manual drive assistance - Google Patents

Abstract

Manually to be driven wheelchair, characterized in that with the Arms and hands forces to be applied laterally arranged, axially to the axis of the drive wheel rotatably mounted radial Holders with transversely to the direction of rotation pivotable called drivers Transfer contact links to the wheels become.

Description

Generally known wheelchairs for self-drivers are equipped with handrims that capture to driving with your hands and pushed by arm movements. To the one required for driving To produce thrust, a friction must be between hand and handrims being constructed. The necessary pressure on the handrims can Often people with disabilities are not Also abnormal Hand training can make the contact with the handrim impossible.

invention should allow such persons self-drive.

• 1. Der Treiber ist durch einen Halter so mit dem Rollstuhl verbunden, dass die Antriebsbewegungen konzentrisch zum Antriebsrad ausgeführt werden können.
• 2. Die Antriebskräfte wirken entweder direkt auf das Antriebsrad – Reifen oder Felge – oder auf einen konzentrisch verbundenen Ring, z.B. den üblichen Greifreifen.
• 3. Neben den für das Antreiben normalerweise erforderlichen Armbewegungen sind keine zusätzlichen Handbewegungen wie Bedienung von Hebeln oder dergleichen notwendig.
• 4. Freilauf ist möglich ohne den Treiber in neutraler Stellung festzuhalten, was z.B. beim Schieben durch eine Hilfsperson erforderlich sein kann.
• 5. Die Oberflächen von Rad und Treiber – Rauheit und evtl. Profilierung – sind so beschaffen, dass ein zuverlässiger Kraftschluss auch bei Nässe vorhanden ist.
• 6. Die durch das Antreiben entstehenden axialen und radialen Hebelmomente werden vom Rollstuhl sicher aufgenommen.

To compensate for the disability, a mechanical intermediate member - called driver in the following text - transfer the arm and hand forces to the respective drive wheel of the wheelchair. The tool should have the following characteristics for reliable operation:

• 1. The driver is connected to the wheelchair by a holder so that the drive movements can be carried out concentrically with the drive wheel.
• 2. The driving forces act either directly on the drive wheel - tire or rim - or on a concentrically connected ring, eg the usual handrims.
• 3. In addition to the usually required for driving arm movements no additional hand movements such as operation of levers or the like are necessary.
• 4. Freewheel is possible without holding the driver in a neutral position, which may be required when pushing by an assistant.
• 5. The surfaces of wheel and driver - roughness and possibly profiling - are designed so that a reliable adhesion even in wet conditions exists.
• 6. The resulting axial and radial moment of the lever are safely picked up by the wheelchair.

The These conditions are described below and arrangement shown in the drawing. It is in this Case for an attachment for commercial wheelchairs.

The out of clamp ( 4 ) with friction lining ( 5 ) and hand rest ( 6 ) existing driver is pivotable transversely to the direction of travel ( 11 ) with the holder ( 1 ) by pen ( 7 ) rotatably connected. The holder is on the axis ( 3 ) of the drive wheel ( 2 ) rotatably mounted and also absorbs the axial and radial forces. To drive ( 10 ) is the driver against the with friction lining ( 12 ) provided tires ( 8th ) to establish the adhesion to initiate the arm forces. At the end of the driving movement of the contact is resolved by pivoting in the opposite direction, the movement is limited by the stop ( 9 ).

Claims (1)

Manually driven wheelchair, characterized in that the forces to be applied with the arms and hands are transmitted to the wheels via laterally arranged, axially centered to the axis of the drive wheel radially mounted holders with transversely to the direction of rotation pivotable called contact elements.