Device at a wheel for a wheelchair

B - Operations – Transporting – 62 – M

Patent

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Details

B62M 1/14 (2006.01) A61G 5/02 (2006.01) B62M 11/16 (2006.01)

Patent

CA 2305797

The invention relates to an arrangement for a wheel for a wheelchair comprising a planetary gear (4) integrated with the aforementioned wheelchair wheel. A sun wheel, planet wheel and ring wheel incorporated in the gear are accommodated in a hub (5) comprising a hub inner part (6) and a hub outer part (7), which parts are rotatably supported relative to one another, are carried by a main shaft (13) capable of attachment to the wheelchair (3). The aforementioned hub parts (6, 7) are supported by means of bearing devices (17, 18, 19) acting around the periphery of the hub (5), which devices are so arranged on the one hand as to support the hub parts (6, 7) radially relative to one another, and are so arranged on the other hand as to provide axial locking of the hub parts (6, 7) relative to one another. In accordance with the invention, the bearing device (14) is formed from a number of grooves (17, 18) extending around the periphery of said hub parts (6, 7), inside which grooves rolling devices (19) or a plain bearing component are so arranged as to act. The aforementioned radial grooves (17, 18) are arranged directly in line with one another on the internal envelope surface of the outer part (7) of the hub and on the external envelope surface of the inner part (6) of the hub when the hub parts (6, 7) are assembled to form a wheelchair wheel hub (5).

L'invention concerne un agencement d'une roue de fauteuil roulant comprenant un engrenage planétaire (4) intégré dans cette roue. Une roue solaire, une roue planétaire et une roue annulaire, incorporées à l'engrenage, sont logées dans un moyeu (5), lequel comprend une partie intérieure (6) et une partie extérieure (7), lesquelles parties sont soutenues rotatives l'une par rapport à l'autre et sont portées par un arbre principal (13) pouvant se fixer sur le fauteuil roulant (3). Ces parties du moyeu (6, 7) sont supportées par des dispositifs de type paliers (17, 18, 19) agissant autour de la périphérie du moyeu (5) et conçus, d'une part, pour soutenir les parties du moyeu (6, 7), radialement l'une par rapport à l'autre, et d'autre part pour assurer un blocage axial de ces parties (6, 7), l'une par rapport à l'autre. Selon l'invention, le dispositif de type palier (14) présente un certain nombre de gorges (17,18), lesquelles s'étendent sur la périphérie des partie du moyeu (6, 7) et dans lesquelles on a disposé de manière coopérante des unités de roulement (19) ou un composant de palier simple. Ces gorges radiales (17, 18) sont conçues pour être alignées directement l'une avec l'autre, sur la surface de l'enveloppe intérieure de la partie extérieure (7) du moyeu et sur la surface de l'enveloppe extérieure de la partie intérieure (6) du moyeu, lors de l'assemblage de ces parties (6, 7), afin de former un moyeu (5) de roue de fauteuil roulant.

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