Patent ID: 8657715

Claim:
A torque distributor for a four-wheel-drive vehicle configured to determine a torque distribution between primary drive wheels of the four-wheel-drive vehicle and secondary drive wheels of the four-wheel-drive vehicle by distributing part of a torque to be transmitted to the primary drive wheels to the secondary drive wheels, comprising: a first roller rotatable together with a first rotary member, which constitutes a part of a torque-transmission path to the primary drive wheels; a second roller rotatable together with a second rotary member, which constitutes a part of a torque-transmission path to the secondary drive wheels; and a second-roller revolving mechanism configured to revolve the second roller in a direction opposite to a rotation direction of power transmission of the second roller around an eccentric-shaft axis which is offset from a rotation axis of the second roller to produce a displacement of the second roller from a non-power-transmission position, at which the second roller is spaced apart from the first roller, to a power-transmission position, at which the second roller is radially loaded and held in contact with the first roller.