Zf Friedrichshafen Ag

Berthold Grosse Kohorst

Andreas Giefer

Ludger Rake

The present disclosure provides a gear selection unit for an automatic transmission. The gear selection unit may include a mount having a gate, where the gate has an automatic channel oriented in a longitudinal direction and a tapping channel disposed adjacent to the automatic channel, and where the automatic channel and the tapping channel are connected to one another via a connecting channel. A selection lever may be inserted in the gate, and the selection lever may be pivotably supported in the mount. A cable pull slider may be movably supported in the longitudinal direction in the mount, where the cable pull slider is coupled to the selection lever via a releasable first coupling device when the selection lever is disposed in the automatic channel. A connector may be coupled in the longitudinal direction to the cable pull slider via a second coupling device.

Gear selection unit for an automatic transmission for a vehicle, and method for operating a gear selection unit

An actuating device for selecting gear steps of a shift-by-wire gearshift transmission with a base housing, a selection lever, a mechanical transmission means for actuating the parking lock, and with a coupling element are arranged between the selection lever and the transmission means. The transmission means is selectively actuated by the coupling element only during selection and/or deselection of the parking lock position on the selection lever. The coupling element has an end which is linearly guided in a slot and an end which is pivotally guided in certain sections in the base housing. The coupling element and the selection lever are kinematically coupled with each other by way of a swivel support. The structure and the installation of the mechanical transmission linkage required for selectively actuating the transmission means to the parking lock can be simplified. The mechanical transmission linkage provides a smoothly operating haptic without significant play and can be used without complex changes also for actuating devices having more than one shift gate.

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Vechta, Germany

Berthold Grosse Kohorst