Single-motor transmission actuator with gate for selecting and shifting gears of a motor vehicle transmission device

A transmission actuator for a motor vehicle transmission device, the transmission actuator comprising:

• a plurality of gear steps for forming gears;
• a selector shaft supported rotatably for shifting the gears and supported axially movably for selecting the gears;
• a gate with a fixed first gate part and an axially movable and rotatable second gate part, one of the first and second gate parts having slots and lands alternating in a direction and the other of the first and second gate parts having at least one element interactable with one of the lands at a time and movable into one of the slots at a time;
• wherein the at least one element is moved in a prescribed direction past the lands and slots in a selecting motion and is moved into one of the slots in a shifting motion;
• an insertion chamfer at least on the lands or on the element, so that when there is a collision between the element and the one land during the shifting motion, the second gate part is movable further in the prescribed direction of the selecting motion via the insertion chamfer and the shifting motion can be continued;
• and
• right-angled transitions, so that then when there is a collision between the element and the one land during the shifting motion the second gate part is not movable contrary to the prescribed direction of the selecting motion, but the shifting motion is stopped.