Flexible coupling with misalignment compensation

F - Mech Eng,Light,Heat,Weapons – 16 – D

Patent

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F16D 3/66 (2006.01) F16D 11/00 (2006.01) F16D 47/00 (2006.01)

Patent

CA 2450183

A flexible coupling assembly interconnects an output shaft and an input shaft. The flexible coupling assembly includes a first hub operatively coupled to the input shaft for rotation therewith. A second hub is operatively coupled to the output shaft for rotation therewith. A flexible element in the form of a coil spring interconnects the first and second hubs for transferring rotational torque between the first and second hubs while continuously compensating for axial misalignment between the first and second hubs. A retainer is disposed between the flexible element and the first and second hubs for limiting radial deflection of the flexible element during rotation of the flexible coupling. A one-way clutch is operatively coupled between the coil spring and one of the first and second hubs for transferring torque in one rotational direction while allowing the output shaft to decelerate relative to the input shaft in a direction other than the one rotational direction.

Un ensemble d'accouplement souple relie un arbre de sortie et un arbre d'entrée. Cet ensemble d'accouplement souple comprend un premier mandrin accouplé fonctionnellement à l'arbre d'entrée pour le faire tourner. Un second mandrin est accouplé fonctionnellement à l'arbre de sortie pour le faire tourner. Un élément souple, sous la forme d'un ressort hélicoïdal relie les premier et second mandrins pour transmettre un couple de torsion entre les premier et second mandrins, tout en compensant en permanence le décentrement entre les premier et second mandrins. Un dispositif de retenue est placé entre l'élément souple, et les premier et second mandrins pour limiter la déviation radiale de l'élément souple lors de la rotation de l'ensemble d'accouplement souple. Une roue libre est accouplée fonctionnellement entre le ressort hélicoïdal, et l'un des premier et second mandrins, pour transmettre un couple dans un sens de rotation, tout en permettant à l'arbre de sortie de décélérer par rapport à l'arbre d'entrée, dans un sens différent dudit sens de rotation.

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