Shift operation device of automatic transmission

Details Shift operation device of automatic transmission Shift operation device of automatic transmission

2009-10-26

2011-12-06

Young, Edwin A (Department: 3655)

Machine element or mechanism

Gearing

Interchangeably locked

C074S335000

Reexamination Certificate

active

08069743

ABSTRACT:
A shift operation device includes: a shift operation member including: a shaft portion; and an arm portion protruding in a radial direction with respect to a center axis of the shaft portion and being rotated around the center axis to perform shift operation of a gear; and a plurality of shift rail members, each of which includes: a rail portion; a shift fork portion; and a shift lug portion capable of being engaged with the arm portion. An engagement portion of the shift lug portion includes a pair of columnar projections arranged at positions mutually different in the shift direction and the select direction. When the shift lug portion is retained in a neutral position, pressure receiving surfaces of the columnar projections are approximately positioned on a reference orthogonal surface superimposed on the center axis and orthogonal to the rail portion.

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