| 摘要 |
A torque transfer mechanism includes the output shaft of a power source to be connected to the rear axle, a first intermediate output shaft disposed concentrically with said output shaft, a second intermediate output shaft to be connected to the front axle, a power transmitting means for drivingly connecting said first and second intermediate output shafts, and a frictional coupling means interposed between said output shaft and said first intermediate output shaft. Said frictional coupling means comprises frictional members, a first cylinder, a first piston received in said first cylinder and adapted to apply a pressure to said frictional members, a second cylinder formed in said first piston, and a second piston received in said second cylinder. When the pressurized fluid is supplied only to said second cylinder, a slip between said output shaft and said first intermediate output shaft is allowed during the running of the vehicle along a curve to allow easy running operation of the vehicle.
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