Vehicular transmission

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

Patent

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Details

F16H 63/30 (2006.01) F16H 59/02 (2006.01)

Patent

CA 2604302

To suppress an engagement noise to a minimum during changing of a gear position through a sliding motion of a shifter. A shift drum center includes a plurality of gear train establishment notches S1-2, S2-3, S3-4, S4-5 disposed, equally spaced apart from each other, on the outer periphery thereof. The gear train establishment notches S1-2, S2-3, S3-4, S4-5 establish a specific gear train selected from among a plurality of gear trains by selectively engaging a drum stopper arm therein. The shift drum center further includes half neutral notches N1, N2, N3 to be engaged with the drum stopper arm. The half neutral notches N1, N2, N3 are disposed on the outer periphery of the shift drum center and at a central portion between each pair of the gear train establishment notches S1- 2, S2-3, S3-4, S4-5, respectively.

Réduction d'un bruit d'engrenages au minimum durant le changement de position des engrenages par le glissement d'un levier de vitesse. Le centre d'un tambour de changement de vitesse compte un ensemble de crans de sélection de train d'engrenages S1-2, S2-3, S3-4, S4-5 disposés sur sa périphérie à égale distance les uns des autres. Les crans de sélection de train d'engrenages S1-2, S2-3, S3-4, S4-5 déterminent lequel des trains d'engrenages choisir de l'ensemble de trains d'engrenages en y insérant un bras de butée dans le cran sélectionné. Le centre du tambour de changement de vitesse comporte également des demi-crans de point mort N1, N2, N3 dans lesquels insérer le bras de butée. Ces demi-crans sont disposés sur la périphérie extérieure du centre du tambour de changement de vitesse, chacun se trouvant à mi-chemin des crans de sélection de train d'engrenages S1-2, S2-3, S3-4, S4-5.

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