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Shifting-device-for-the-gearbox-of-a-motor-vehicle

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Details

Inventors: Giefer, Andreas; Neughbauer, Roland; Schiberna, Peter;
Assignee: ZF Lemforder Metallwaren AG (DE); Audi AG (DE)
Primary Examiner: Estremsky; Sherry
Assistant Examiner: Pang; Roger
Attorney, Agent or Firm: McGlew and Tuttle, P.C.

A shifting device is disclosed for automatic transmissions of motor vehicles with a selector lever, which is pivotable around at least one axis and by which the gears defined by the transmission of the motor vehicle can be selected. A shift position of the selector lever is associated with each gear. An actuator cooperates with a locking member, which is pivotable around an axis. The locking member is pivotable by the actuator around the axis and has an engaging contour corresponding to the particular shift position of the selector lever on the side facing the selector lever. The selector lever can thus be locked in each shift position.

DETAILED DESCRIPTION What is claimed is: 1.
A motor vehicle automatic transmission shifting device comprising: a selector lever mounted pivotably around at least one axis for selecting gears defined by the transmission of the motor vehicle; an actuator; and a locking member mounted pivotably around a locking member axis, said locking member being pivoted by said actuator around said locking member axis and having an engaging contour corresponding to each shift position of the selector lever on a side facing said selector lever for locking said selector lever in each shift position, said locking member having a three-dimensional shape corresponding to a shape of the lower end of the selector lever.
2.
A motor vehicle automatic transmission shifting device in accordance with claim 1, wherein said actuator is an electromagnet.
3.
A motor vehicle automatic transmission shifting device in accordance with claim 1, further comprising: a signal transmitter generating a shift position signal based on the shift position of said selector lever; a signal transmitter generating a brake actuation signal in response to motor vehicle brake actuation; a device generating a motor vehicle transmission travel condition signal; and a central control unit receiving said shift position signal, said brake actuation signal and said motor vehicle transmission travel condition signal and controlling said actuator based on the evaluation of predefined parameters.
4.
A motor vehicle automatic transmission shifting device in accordance with claim 1, further comprising: a central control unit receiving signals and controlling said actuator based on an evaluation of predefined parameters; a device generating a motor vehicle transmission travel condition signal; and a signal transmitter generating a shift position signal based on the shift position of said selector lever; a motor vehicle brake signal transmitter sending brake actuation signals to said control unit including a brake depressed signal and a brake not depressed signal; a motor vehicle ignition lock signal pickups detecting ignition lock signals from said central unit including a lock ignition lock signal and a release ignition lock signal; a motor vehicle ignition lock signal transmitter for sending signals to said control unit including an ignition lock is locked signal and an ignition lock is released signal, said control unit evaluating the received signals for said evaluation of predefined parameters

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