Rotation transmission device

Details Rotation transmission device Rotation transmission device

1998-02-20

2000-03-28

Schwartz, Chris

Motor vehicles

Having four wheels driven

With manually operated means for disengaging drive to one or...

192 482, 192 93A, B60K 17354

Patent

active

060418796

ABSTRACT:
A rotation transmission device is mounted in a drive train of a four-wheel drive vehicle to selectively distribute driving force to selected vehicle wheels according to the travel condition of the vehicle. This device includes an outer ring and an input shaft. A cylindrical face is formed on one of the opposed surfaces of the outer ring and the input shaft, while cam faces are formed on the other opposed surface to define a wedge-shaped space between the cylindrical face and each cam face. Rollers are mounted in pockets formed in a retainer mounted between the input shaft and the outer ring. An electromagnetic clutch is coupled to the retainer. A switch spring is mounted between the retainer and the input shaft. A two-way clutch is provided between the outer ring and the input shaft. A control unit controls the two-way clutch by adjusting the amount of current fed through a coil of the electromagnetic clutch according to the travel condition of the vehicle, thus selectively distributing driving force to selected vehicle wheels. A method of controlling the rotation transmission device is also proposed. Also, another transmission device is proposed which is mounted in the transfer of a vehicle.

REFERENCES:
patent: 4538700 (1985-09-01), Suzuki
patent: 4860866 (1989-08-01), Stanek
patent: 5531307 (1996-07-01), Fechter
patent: 5549075 (1996-08-01), Hara
patent: 5599075 (1997-02-01), Hara
patent: 5620072 (1997-04-01), Engle
patent: 5651749 (1997-07-01), Wilson

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