Lubricating oil supplying mechanism for automatic transmission for automobile

Abstract

Abstract PURPOSE:To make it unnecessary to provide an oil seal ring, which has heretofore been used in a through hollow portion of a transmission case, wherein a lubricating oil is supplied from an oil passage provided therein into a lubrication bore provided in an axial portion of an output shaft, and thereby improve the assembling efficiency of a lubricating oil supplying mechanism, by fitting a sleeve around an outer circumferential surface of the output shaft. CONSTITUTION:An output shaft 6, to which power from an engine 1 is transmitted, is extended through a through hollow portion 8 of a transmission case 4 and rotatably supported via a flange 12 and a bush 14. A sleeve 21 is fitted around that portion of the output shaft 6 which is within the through hollow portion 8, and fixed thereon immovably with pins 29. The sleeve 21 is provided with an annular groove 22 in the outer circumferential surface thereof. The annular groove 22 is provided with a radially extended oil port 23 in that portion thereof which is opposed to an oil port 7 opened into a through bore 9 in the through hollow portion 8. The oil port 23 is communicated with a lubrication bore 24 provided in an axial portion of the output shaft 6, via a radially extended port 26 provided in the output shaft 6. This structure makes it unnecessary to provide an oil seal which has heretofore been used in the through hollow portion 8.

Inventors

• 👤 Yutaka Taga
• 👤 Kunio Morisawa

Bibliographic Details