| 摘要 |
PROBLEM TO BE SOLVED: To reduce parts necessary for sealing by feeding a hydraulic fluid passage for a clutch putting a Ravigneaux type planetary gear set into a high- speed gear selection state without intervening a central axis. SOLUTION: A hydraulic fluid passage of high clutch H/C putting the Ravigneaux type planetary gear set 3 into the high-speed gear selection state comprises a transmission case side oil hole 21 provided in an output shaft support part (end wall) 11b of a transmission case 11 extending diametrically and an output shaft side oil hole 22 provided in an output shaft 2 extending axially so as to communicate therewith. The opening end part of the output shaft side oil hole 22 communicates with an input shaft 1, a clutch drum 23 of the high clutch H/C, and inside a closed space 24, the clutch drum 23 is provided with a communication hole 26, and the hydraulic fluid pressure is fed to/ discharged from the high clutch H/C via the above all shown by an arrowα. The hydraulic fluid pressure is prevented from entering into inside a wheel driving shaft 12 positioned in the center so as to reduce places for delivering the hydraulic pressure between the oil holes, thereby reducing the installation places of the sealing member 27.
|
