IP Library Granted Patent US 9,032,830
Granted Patent B2
US 9,032,830 · App. 12/916,466 · Granted May 19, 2015

Transmission shift selector assembly

Inventor: Donald Morrissett (Grosse Point Woods, MI)
Assignee: FORD GLOBAL TECHNOLOGIES, LLC
F16H61/24F16H59/10F16H2061/247
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Quick Facts
Patent No.
US 9,032,830
App. No.
12/916,466
Granted
May 19, 2015
Kind
B2
Abstract

The present disclosure relates to various shift selector assemblies having a shift gate with a plurality of indentations corresponding to transmission shift selections. At least one of the indentations is configured to have a flexible depth so as to selectively restrict and accept a pawl pin, thereby mitigating shift position overshoot.

Claims (29)

1. A transmission shift gate assembly, comprising:

a shift gate having indentations corresponding to shift selections, each indentation having a different radial distance from a pivot;

a spring-loaded retractable plunger linearly slidable in a radial direction to vary the distance from the pivot within only one of the indentations, said sliding producing a greater distance of the indentation from the pivot that admits a pawl pin into the indentation, and a lesser distance of the indentation that restricts the pawl pin from the indentation.

2. The shift gate assembly of claim 1 , further comprising:

a first indentation corresponding to a first shift selection;

a second indentation corresponding to a second shift selection and positioned aft of the first indentation; and

a third indentation corresponding to a third shift selection and positioned aft of the first and second indentation, the third indentation is configured to have a variable distance, defining a restriction distance and a reception distance.

3. The shift gate assembly of claim 2 , wherein the restriction distance is less than the reception distance in order to mitigate overshoot of the second indentation in a first direction.

4. The shift gate assembly of claim 3 , wherein the reception distance is within 25% of the distance of the first indentation.

5. The shift gate assembly of claim 3 , wherein the second indentation includes a chamfered edge to guide the pawl pin.

6. The shift gate assembly of claim 1 , further comprising a reinforcement surface adjacent to the indentation having a variable distance, the reinforcement surface restricting pivoting movement of the pawl.

7. A transmission shift selector, comprising:

a shift lever pivotable about a pivot;

a shift gate having indentations, each indentation having a different distance from the pivot;

a pawl pin that pivots with the shift lever and is selectively linearly movable relative to the shift lever;

a spring-loaded retractable plunger linearly slidable in a radial direction to vary the distance from the pivot within only one of the indentations, said sliding producing a greater distance of the indentation from the pivot that admits the pivoting pawl pin into the indentation and a lesser distance of the indentation that restricts the pawl pin from the indentation.

8. The shift selector of claim 7 , wherein the plurality of indentations includes:

a first indentation corresponding to a first shift selection;

a second indentation corresponding to a second shift selection and positioned aft of the first indentation; and

a third indentation corresponding to a low-manual indentation selection and positioned aft of the first and second indentation;

wherein the third indentation is configured to have a variable distance, defining a restriction distance and a reception distance.

9. The shift selector of claim 8 , wherein the restriction distance is less than the reception distance in order to mitigate overshoot of the second indentation in a first direction.

10. The shift selector of claim 9 , wherein the reception distance is within 25% of the distance of the first indentation.

11. The shift selector of claim 8 , wherein the second indentation corresponds to a drive selection and wherein the third indentation corresponds to a manual selection.

12. The shift selector of claim 8 , wherein the second indentation includes a chamfered edge to guide the pawl pin.

13. The shift selector of claim 7 , further comprising a reinforcement surface adjacent to a second indentation, the reinforcement surface restricting pivoting movement of the pawl.

14. The shift selector of claim 7 , wherein:

a spring attached to the plunger is compressed to admit the pawl pin into the indentation; and

said spring is not compressed to restrict the pawl pin from the indentation.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 16, 2010
From: MORRISSETT, DONALD, MR.
To: FORD GLOBAL TECHNOLOGIES, LLC
Reel/Frame 025515/0252 →
Continuity (1)
Related Publication 20120103122A1 · May 3, 2012