Differential case with ring gear attachment

Details Differential case with ring gear attachment Differential case with ring gear attachment

1993-02-17

1994-06-14

Herrmann, Allan D.

Planetary gear transmission systems or components

Differential planetary gearing

Bevel gear differential

29432, 29525, 298932, 74447, 403359, F16H 5512, F16H 140, B23P 1514

Patent

active

053205871

ABSTRACT:
A differential in a motor vehicle drive axle includes a barrel shaped case and a ring gear. The case has an outer cylindrical boss and an adjacent smaller inner cylindrical boss. The ring gear has a flat side facing the case, a plurality of self-cutting straight splines around the center of the ring gear, and a counterbore in the flat side concentric with the self-cutting splines. The self-cutting splines have a major diameter corresponding to the diameter of the inner boss so that when the ring gear is forcibly moved to an assembled position on the case, the self-cutting splines form in situ on the inner boss a plurality of mating straight splines in mesh with the self-cutting splines. The depth of the counterbore is coordinated with the length of the inner boss to achieve penetration of the outer boss into the counterbore at the time the self-cutting splines engage the inner bore so that a closed chip trap is defined ahead of the self-cutting splines.

REFERENCES:
patent: 2069411 (1937-02-01), Keese
patent: 3100333 (1963-08-01), Friend
patent: 3727254 (1973-04-01), Tildesley
patent: 3853413 (1974-12-01), Parran
patent: 3901103 (1975-08-01), Hufstader
patent: 4376333 (1983-03-01), Kanamaru et al.
patent: 4628753 (1986-12-01), Heine et al.
patent: 4728216 (1988-03-01), Disborg
patent: 4741225 (1988-05-01), Hall, III et al.

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