A continuous variable transmission assembly

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

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Details

F16H 47/04 (2006.01) F16H 3/72 (2006.01) F16H 61/00 (2006.01)

Patent

CA 2683157

A variable ratio drive assembly (10) including: a planetary gear device (13) having an input shaft (15), an output shaft (17), with the shafts having a common rotational axis (21 ), an input gear (16) attached to the input shaft, an output gear (18) attached to the output shaft, a carriage (20) mounted for rotation about said axis, at least one planetary gear (19) meshed with the input gear and output gear, the planetary gear being rotatably mounted in the carriage, a ring gear (23) fixed to the carriage so as to be rotated about said axis, a pump gear (24) meshingly engaged with the ring gear, a pump device (51) drivingly connected to the pump gear and restriction means to control the flow so that said pump device (51 ) applies a torque to said pump gear to control rotation of said ring gear and therefore rotation of said output shaft.

L'invention concerne un ensemble d'entraînement à rapport variable (10) qui comprend : un dispositif de train épicycloïdal (13) ayant un arbre d'entrée (15), un arbre de sortie (17), les arbres ayants un axe de rotation commun (21), un engrenage d'entrée (16) relié à l'arbre d'entrée, un engrenage de sortie (18) relié à l'arbre de sortie, un chariot (20) monté pour une rotation autour dudit axe, au moins un satellite (19) s'engrenant avec l'engrenage d'entrée et l'engrenage de sortie, le satellite étant monté rotatif dans le chariot, une couronne (23) fixée au chariot de façon à être entraînée en rotation autour dudit axe, un engrenage de pompe (24) s'engrènent avec la couronne, un dispositif de pompe (51) relié par entraînement à l'engrenage de pompe et des moyens de limitation pour contrôler l'écoulement de telle sorte que ledit dispositif de pompe (51) applique un couple audit engrenage de pompe pour commander la rotation de ladite couronne, et par conséquent la rotation dudit arbre de sortie.

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