Patent ID: 7927246

Claim:
A vehicular drive force distribution device that distributes drive force generated by a drive source to right and left driving wheels, comprising: a differential portion having a first rotating element to which the drive force generated by the drive source is transmitted, a second rotating element connected to one of the right and left driving wheels, and a third rotating element connected to another one of the right and left driving wheels; a speed shift portion that shifts a speed of rotation of the first rotating element and selectively outputs rotation from a fourth rotating element; a first clutch that transmits the rotation from the fourth rotating element to the second rotating element so that an amount of torque transmitted is variable; and a second clutch that transmits the rotation from the fourth rotating element to the third rotating element so that the amount of torque transmitted is variable, wherein the speed shift portion includes a planetary gear device that includes the fourth rotating element, a fifth rotating element linked to the first rotating element, and a sixth rotating element, and the speed shift portion includes a brake capable of braking rotation of the sixth rotating element, and wherein the speed shift portion is capable of changing the amount of torque transmitted to the fourth rotating element, using the brake.