| 摘要 |
PURPOSE:To uniformly obtain bias ratio by forming an opposed surface, provided extending in a radial direction, between the first and second worm gears, rotatably supported respectively separating in a wall part penetrating through both side wall parts of a rotating member, and each wall part and providing a thrust member to be arranged between the opposed surfaces. CONSTITUTION:When a differential gear case 11 is rotated, rotation is transmitted to worm gears 3, 4 through worm wheels 1, 2, further this rotation is transmitted to right and left axle shafts through output flanges 6, 10 fixed to the worm gear, and a vehicle is driven in straight advance running. While in accordance with a direction of rotation of the differential gear case 11, thrust force, applied to the worm gear 3, acts on a thrust washer 5 or 7, being received by a slide adapted surface 5a or 7a of these thrust washers to the case 11, and thrust force, applied to the worm gear 4, is similarly received by a slide adapted surface 8a or 9a. Further the slide adapted surfaces 5a, 7a, 8a, 9a generate the same slide friction force for the same thrust force.
|
