| 摘要 |
<P>PROBLEM TO BE SOLVED: To avoid enlargement by a simple structure reducing the number of parts, in a vehicle power unit including first and second clutches that transmit/interrupt rotary power to first and second main shafts with selectively established multispeed gears provided among a countershaft from a primary reduction gear mechanism at one ends of first and second main shafts. <P>SOLUTION: The primary reduction gear mechanism 45 includes: a driving gear 46 provided on a crankshaft 18; a first driven gear 73 supported by a first main shaft 19 for relative rotation therewith at a position adjacent to the first clutch 47A and meshes with the driving gear 46; an intermediate driving gear 74 rotating with the first driven gear 73; an idle gear 75 that meshes with the intermediate driving gear 74, and supported by the countershaft 21 for relative rotation therewith; and a second driven gear 76, that meshes with the idle gear 75, and supported by the second main shaft 20 for relative rotation therewith. <P>COPYRIGHT: (C)2012,JPO&INPIT |
