Power transmission for automotive vehicle
AssigneeNissan Motor Co., Ltd.
InventorsTakahiro Yamamori, Kazuyoshi Iwanaga, Kunio Ohtsuka
Life of this patent
Estimating the term…
Abstract
An output gear of a power transmission is drivably connected through an idler gear to an input gear of a final drive unit having a differential. The idler gear is mounted through a pair of tapered roller bearings on a sleeve shaft which is supported by opposite two walls between which the idler gear is located. An end portion of the sleeve shaft is adjustably received within a recess formed at the inner surface of one of the walls in a manner that a bolt securing the sleeve shaft is screwed into a boss formed in the recess of the wall.
Claims21
In a power transmission having a gear mechanism with an output shaft carrying an output gear, said output gear being connected to the input gear of a final drive unit by means of an idler gear rotatably supported between spaced opposed first and second walls of the transmission, the improvement comprising:
- a cylindrical recess on the interior surface of said first wall and an opening in said second wall disposed oppositely to said cylindrical recess;
- an integral projection on said first wall extending axially inwardly from the bottom of said recess towards said opening, said projection cooperating with said recess to define an annular space;
- a sleeve shaft supported by and extending between said first and second walls, said sleeve shaft having first and second end portions, said first end portion being received in said annular space and surrounding said projection, said second end portion being received in said opening;
- bearing means on said sleeve shaft for rotatably supporting said idler gear;
- and retainer means engageable with said projection for axially urging said sleeve shaft towards said first wall to thereby maintain said first end portion within said annular space.
An automatic transmission including a torque converter housed in a converter housing, and a planetary gear system having planetary gear elements, a power input element drivably connected to a drive member of the torque converter, and a power output element having an output gear which is positioned between and coaxially arranged with the torque converter and the planetary gear element, the output gear being operatively connected to an input gear of a final drive unit, the improvement comprising:
- means defining first and second spaced opposed walls, said first wall being formed at its inner surface with a cylindrical recess and said second wall having an opening aligned axially with said cylindrical recess;
- a projection formed at the central portion of said cylindrical recess and integral with said first wall to define a generally annular space in said cylindrical recess, the axis of said central projection being common with that of said cylindrical recess and said opening;
- a sleeve shaft having a first end portion which is disposed in said annular space and a second end portion received in said opening;
- first and second tapered roller bearings mounted on and axially spaced along the length of said sleeve shaft;
- an idler gear rotatably carried on said shaft by said bearings, said idler gear being interposed between and meshing with the output gear of the power output element of the planetary gear system and the input gear of the final drive unit;
- and
- retainer means engageable with said projection for axially urging said sleeve shaft towards said first wall to thereby maintain said first end portion within said annular space.
Dependencies are inferred from the claim text.