Abstract: A driving force transmitting device for a vehicle includes a drive mode-shifting mechanism which is disposed in the final drive gear-set of a vehicle. The drive mode-shifting mechanism includes a first rotating member, a second rotating member, a third rotating member, and a movable member. The movable member is movable between a first position in which the first and second rotating members are disconnected to effect the two-wheel-drive mode, a second position in which the first and second rotating members are connected to effect differential-free four-wheel-drive mode, and a third position in which the second and third rotating members are connected to effect the differential-lock four-wheel-drive mode.

Abstract: A driving force transmitting device for a vehicle includes a drive mode-shifting mechanism which is disposed in the final drive gear-set of a vehicle. The drive mode-shifting mechanism includes a first rotating member, a second rotating member, a third rotating member, and a movable member. The movable member is movable between a first position in which the first and second rotating members are disconnected to effect the two-wheel-drive mode, a second position in which the first and second rotating members are connected to effect differential-free four-wheel-drive mode, and a third position in which the second and third rotating members are connected to effect the differential-lock four-wheel-drive mode.

Abstract: A driving force transmitting device for a vehicle includes a drive mode-shifting mechanism which is disposed in the final drive gear-set of a vehicle. The drive mode-shifting mechanism includes a first rotating member, a second rotating member, a third rotating member, and a movable member. The movable member is movable between a first position in which the first and second rotating members are disconnected to effect the two-wheel-drive mode, a second position in which the first and second rotating members are connected to effect differential-free four-wheel-drive mode, and a third position in which the second and third rotating members are connected to effect the differential-lock four-wheel-drive mode.

Abstract: A vehicle drive system includes a compact drive mode-shifting mechanism that is mounted in the final drive gearset of a vehicle. The drive mode-shifting mechanism includes a first shaft, a second shaft, and a clutch assembly. The first shaft forms an input shaft for the differential for a pair of wheels, the second shaft transmits engine power and the clutch assembly connects and disconnects the first and second shafts to one another to effect either the two-wheel-drive mode or the four-wheel-drive mode. The first shaft has an outer surface provided with a first spline, the second shaft has an outer surface provided with a second spline, and said clutch assembly includes an axially movable shifting member provided with an internal spline.

Abstract: An electrically actuated free wheel hub apparatus includes an axle tube, a wheel hub arranged about the axle tube and operated in response to the position of a drive transfer mechanism. An electric motor is disposed in a body fixed to the wheel hub and an axle shaft is interior to the axle tube. A control device control transmittal of power between the axle shaft and the wheel hub by a clutch mechanism. A syncromesh device is provided in the drive transfer mechanism so that each rotation of a front wheel side and a rear wheel side can be synchronized and a delay device transmit current to the motor after the completion of synchronizing.

Abstract: A vehicle drive system includes a compact drive mode-shifting mechanism that is mounted in the final drive gearset of a vehicle. The drive mode-shifting mechanism includes a first shaft, a second shaft, and a clutch assembly. The first shaft forms an input shaft for the differential for a pair of wheels, the second shaft transmits engine power and the clutch assembly connects and disconnects the first and second shafts to one another to effect either the two-wheel-drive mode or the four-wheel-drive mode. The first shaft has an outer surface provided with a first spline, the second shaft has an outer surface provided with a second spline, and said clutch assembly includes an axially movable shifting member provided with an internal spline.