Control device

The invention relates to a control device comprising : at least one selector (7) able to be shifted in at least two angular positions and having a circumferential ring (19), and notching means for retaining said at least one selector (7) in said angular positions, said notching means comprising a first notching member (29) fixedly mounted in said control device and interacting with said circumferential ring (19) in order to define said at least two angular positions. According to the invention, said notching means further comprise a second notching member (31) interacting with said circumferential ring (19), said first (29) and second (31) notching members being arranged on either side of said circumferential ring (19) so that said at least one selector (7) is mounted in said control device via a floating mount between said first (29) and second (31) notching members.