Aisin Seiki Kabushiki Kaisha

Masumi Kazaoka

Toru Kagata

Tooru Kagata

Hideaki Wakabayashi

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. The shifting member is movable between a first position in which the internal spline on the shifting member is in engagement with the first spline on the first shaft and the second spline on the second shaft to achieve the four-wheel-drive more and a second position in which the internal spline on the shifting member is in engagement with the first spline on the first shaft and is out of engagement with the second spline on the second shaft to achieve the two-wheel-drive mode.

Vehicle drive system including drive mode-shifting mechanism for shifting between two-wheel drive and four-wheel drive

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.

Driving force transmitting device for vehicle

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. The shifting member is movable between a first position in which the internal spline on the shifting member is in engagement with the first spline on the first shaft and the second spline on the second shaft to achieve the four-wheel-drive mode and a second position in which the internal spline on the shifting member is in engagement with the first spline on the first shaft and is out of engagement with the second spline on the second shaft to achieve the two-wheel-drive mode.

Vehicle drive system including drive mode-shifting mechanism for

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.

Growing community of inventors

Aichi-ken, Japan

Masumi Kazaoka