Multistage transmission

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

Patent

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Details

F16H 3/083 (2006.01) F16H 3/089 (2006.01) F16H 63/18 (2006.01)

Patent

CA 2678980

A multistage transmission is provided that smoothly operates with a small force without the necessity of a shift clutch, that does not cause a loss of switching time during shifting, and that does not cause escape of a driving force as well as provides a small shift shock. When shift drive means executes upshift to a one-step--upper speed-change stage reduced in reduction ratio by one stage, normal rotation odd--numbered stage cam rods Cao and normal rotation even-numbered stage cam rods Cae alternately operate normal rotation odd-numbered stage engaging members Rao and the normal rotation odd-numbered stage engaging members Rae for shifting.

La présente invention concerne une transmission à rapports multiples qui fonctionne de manière transparente avec une petite force sans nécessiter d'embrayage de passage des rapports, qui ne cause pas de perte de temps de manouvre lors du passage de rapport, et qui ne provoque pas la perte de force d'entraînement, tout en provoquant un petit choc de changement de vitesse. Lorsque le changement de vitesse entraîne un passage de rapport de la transmission à un rapport supérieur, l'étagement de changement de vitesse est rétrogradé d'un rapport de réduction, la rotation normale des tiges de came à nombre impair (Cao) et la rotation normale des tiges de came à nombre pair (Cae) fonctionnent de manière alternative en rotation normale, les éléments à nombre impair engageant les éléments Rao, et la rotation normale des éléments à nombre pair engageant les éléments Rae pour le changement de vitesse.

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