A drive unit for a kinematic system in a motor vehicle. In particular, the drive unit is provided for independently moving two movable elements, in particular blades for guiding an air current of an air vent. The movable elements are driven by way of an actuator plate, which includes a radial cam rotating and radially displacing a slide, which consecutively rotates two output elements. In a blocking position, the slide blocks the output elements to prevent a rotation.