Driving force distributing apparatus for a four-wheel drive vehicle
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorKazuo Kanazawa
Life of this patent
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Abstract
In a pressure type differential limiting clutch, a drive plate and a driven plate provided between a clutch drum for transmitting a driving force to a front drive shaft and a clutch hub for transmitting the driving force to a rear drive shaft are pressed by a pressure force of a cone disk spring provided in a pressure plate, and an initial torque by the cone disk spring acts as the differential limiting torque. At a high speed, a weight in limiter device is moved in a radius direction by a centrifugal force through rotation of the rear drive shaft, enters between cam surfaces formed on the pressure plate and the clutch hub, and pushes and broadens. As a result, the pressure plate 65 moves back against energizing force of the cone disk spring, and the initial torque is cancelled.
Claims20
A driving force distributing apparatus, comprising:
- a differential device provided in a vehicle for torque distribution;
- a differential limiting clutch provided to variably apply a differential limiting torque to limit a differential operation of said differential device;
- an initial torque applying mechanism provided to apply an initial torque to said differential limiting clutch;
- and
- a torque limiter provided to cancel said initial torque at a predetermined vehicle speed.
A driving force distributing apparatus for a four-wheel drive vehicle, comprising:
- a center differential device provided distribute a torque from an output shaft of a transmission to a front drive shaft operatively connected to front wheels and a rear drive shaft operatively connected to rear wheels;
- a differential limiting clutch provided to variably apply a differential limiting torque to limit a differential operation of said center differential device;
- an initial torque applying mechanism provided to apply an initial torque to said differential limiting clutch;
- and
- a torque limiter provided to cancel said initial torque at a predetermined vehicle speed.
A driving force distributing apparatus for a four-wheel drive vehicle, comprising:
- a center differential device provided to distribute a torque from an output shaft of a transmission to a front drive shaft operatively connected to front wheels and a rear drive shaft operatively connected to rear wheels;
- a differential limiting clutch provided to variably apply a differential limiting torque to limit a differential operation of said center differential device, said differential limiting clutch having a clutch drum operatively connected to one of said output shaft, said front drive shaft and said rear drive shaft, a clutch hub operatively connected to the other one of said output shaft, said front drive shaft and said rear drive shaft, a plurality of plates interposed between said clutch drum and said clutch hub, and a pressure plate operative to press said plates to engage said clutch drum and said clutch hub;
- a spring mechanism provided to apply a spring force to said pressure plate to preload said differential limiting, thereby to generate an initial torque;
- and
- a torque limiter provided to apply a force opposite to said spring force depending on vehicle speed, to thereby cancel said initial torque at a predetermined vehicle speed.
Dependencies are inferred from the claim text.