| 摘要 |
The gearbox comprises: a first inner input shaft (10) which carries driving gearwheels (21, 23, 27) associated to the odd gears (I, III, V, VII) and fast for rotation therewith; a second outer input shaft (12) which is coaxial with the first and carries driving gearwheels (22, 24) associated to the even gears (II, IV, VI) and to the reverse gear (R) and fast for rotation therewith; and first and second output shafts (14, 16) carrying idle driven gearwheels (31-38). A first driving gearwheel (21) meshes only with the driven gearwheel (31) of first gear (I); a second driving gearwheel (23) meshes both with the driven gearwheel (33) of third gear (III) and with the driven gearwheel (35) of fifth gear (V); a third driving gearwheel (27) meshes only with the driven gearwheel (37) of seventh gear (VII); a fourth driving gearwheel (24) meshes both with the driven gearwheel (34) of fourth gear (IV) and with the driven gearwheel (36) of sixth gear (VI); and a fifth driving gearwheel (22) meshes with the driven gearwheel (32) of second gear (II) and, via this latter, with the driven gearwheel (38) of reverse gear (R). |
