Patent ID: 8151958
Filing Date: 2012-04-10
Classification: F16D

Abstract:
1. A power transmitting device for transmitting a driving force between front wheels and rear wheels, comprising: a first rotational member linked to the front wheels; a second rotational member linked to the rear wheels; a main clutch provided between the two rotational members for controlling the transmission of driving force between the two rotational members; and a cam mechanism for applying a pressing force in an axial direction to the main clutch, wherein the cam mechanism has a first cam member and a second cam member, wherein the first and second cam members rotate relative to each other due to rotational torque transmitted via the first or second rotational member, and thus, a pressing force in the axial direction is applied to the main clutch, wherein the cam mechanism has a first elastic member for urging the first cam member to rotate toward a neutral position where no pressing force is applied to the main clutch, and a second elastic member for urging the second cam member to rotate toward the neutral position, and wherein the rotational direction which the second elastic member urges the second cam member to rotate is opposite to the rotational direction which the first elastic member urges the first cam member to rotate.