| 摘要 |
PROBLEM TO BE SOLVED: To absorb differential rotation between front and rear wheels even when a driving force distribution clutch mechanism is connected in a case of low speed traveling with a large amount of steering in distributing driving torque from an input shaft to two output shafts. SOLUTION: The driving force distribution clutch mechanism 11 is provided to distribute driving torque from an input shaft member 12 to a front output shaft 5 and a rear output shaft 6. A centrifugal clutch mechanism 25 is disposed between the driving force distribution clutch mechanism 11 and the rear output shaft 6. In a low rotation number state of a clutch hub 11a of the driving force distribution clutch mechanism 11, only low centrifugal force is added to a weight roller 26, so that a rear clutch member 28c is not connected, and transmission of driving force to the rear output shaft 6 is disconnected. With a large amount of steering to start, smooth start is possible since the centrifugal clutch mechanism 25 is kept disconnected even when the driving force distribution clutch mechanism is connected. COPYRIGHT: (C)2009,JPO&INPIT
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