COUPLER MECHANISM COOLING DEVICE OF MOTIVE POWER DISTRIBUTION DEVICE FOR VEHICLE

摘要

PURPOSE: To simplify structure, to eliminate noise and to improve cooling efficiency by driving an oil feeding mechanism to feed cooling oil by transmitting torque by frictional contact with a case outer peripheral surface of a portion to heat of a coupler mechanism. CONSTITUTION: A motive power distribution device 6 for a vehicle is provided with a coupler mechanism cooling device 64 in a distribution case 8. When a fluid coupling 44 is rotated, a roller 80 of a driving mechanism 76 is rotated by a pressing part 88 frictionally made contact with by an outer peripheral surface 78 of a case 50 of the fluid coupling 44 in the coupler mechanism cooling device 64. Oil attached on the roller 80 in an oil level is splashed up to the fluid coupling 44 by this torque. The fluid coupling 44 is cooled down by the oil attached on the rotating roller 80 and the splashed oil. Additionally, the fluid coupling 44 is pressed by the outer peripheral surface 78 of the case 50 in the neighborhood of a piston 54 moved to advance and retreat which is a portion to heat. Heat is absorbed by a pressing part 88 of the roller 80 of the driving mechanism 76 and released.