Patent ID: 6474444
Filing Date: 2002-11-05
Classification: F16C,F16H,Y10T

Abstract:
A lubricating structure for an automatic transmission, the lubricating structure comprising:an output gear having a gear portion for delivering an output rotation of the automatic transmission, and a hollow boss; an inner rotating shaft disposed inside the boss of the output gear and formed with a lubricating oil passage; a taper roller bearing disposed around the boss of the output gear; an outer support surrounding and supporting the taper roller bearing; and a dam forming an oil reservoir for storing a lubricating oil from the oil passage in the rotating shaft, the oil reservoir being formed radially between the boss of the output gear and the outer support, and axially between the dam and the taper roller bearing which is located axially between the gear portion of the output gear and the reservoir, wherein the outer support and the dam are parts of a non-rotating member, and the dam projects radially inwardly, and wherein the lubricating structure further comprises a second bearing, and the dam is an inward extension of a first race of the second bearing, the first race being disposed at an end of the outer support, the inward extension of the first race projecting radially inwardly from the outer support.