Control for automatic transmission in a motor vehicle
AssigneeAudi AG
InventorsHeiko Barske, Berndt-Robert Hohm, Ernst-Olav Pagel, Helmut Burkhart, Johann Haderer
Life of this patent
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Abstract
The disclosure relates to a control mechanism for automatic transmission in a motor vehicle to prevent operation of a selector lever under certain conditions. For example, the selector lever can be locked into the park position and shifted out of this position only after the brake pedal has been operated. The locking mechanism includes a manually controllable catch mechanism which cooperates with an electro-magnetically operated mechanism to achieve the desired selector lever control.
Claims12
In a motor vehicle having an automatic transmission, a selector lever operatively connected to said automatic transmission and movable selectively into non-drive and drive positions and a brake pedal, a control device comprising:
- locking means movable into a locking position relative to said selector lever when said selector lever is in said non-drive position and into an unlocking position,
- means for biasing said locking means into said unlocking position,
- means responsive to the positioning of said selector lever in said non-drive position for displacing said locking means into said locking position relative to said selector lever, and
- means responsive to the actuation of said brake pedal for deactivating said displacing means whereby said selector level is freed to be moved into said drive position.
In a motor vehicle having an automatic transmission, a selector lever operatively connected to said automatic transmission and pivotally displaceable about an axis between at least one non-drive position and at least one drive position, a plate member disposed adjacent said selector lever, said plate member having an opening therein disposed arcuately relative to said lever pivot axis, said selector lever having a radially displaceable catch pin relative to said lever pivot axis, projecting through said arcuate opening and biased in contact with an edge of said arcuate opening, said edge having spaced indentations adapted to receive said selector lever pin when said selector lever is disposed in said non-drive and drive positions, a control device comprising:
- locking member pivotal about said selector lever axis and pivotable displaceable between a locking position and a non-locking position relative to said selector lever pin when said selector lever pin is disposed in an indentation corresponding to the non-drive position of said selector lever,
- said locking member having a first surface engaging said selector lever pin and a second surface disposed in the path of radial displacement of said selector lever pin relative to said lever pivot axis when said selector lever pin is disposed in said indentation corresponding to the non-drive position of said selector lever and said locking member is in the locking position,
- means for biasing said locking member into said unlocking position,
- means responsive to the positioning of said selector lever in said non-drive position for displacing said locking means into said locking position, and
- means responsive to the actuation of said brake pedal for deactivating said displacing means.
Dependencies are inferred from the claim text.