Actuating device for opening and closing a cover in or on a vehicle on demand and cover with such an actuating device

An actuating apparatus for opening and closing a cover in or on a vehicle, the actuating apparatus comprising:

• a blocking device for blocking the cover in a locked position, wherein the blocking device includes a transmission mechanism with a rotation part mounted rotatably and driveable by an actuator of the blocking device, and a blocking bar operatively connected to the rotation part;
• wherein an engagement between the transmission mechanism and the blocking bar is configured such that a rotation movement of the rotation part is converted into an axial movement of the blocking bar;
• wherein, for blocking the cover in the locked position, the blocking bar is moveable, via rotation of the rotation part from a release position into a blocking position;
• wherein the engagement between the transmission mechanism and the blocking bar is configured to be self-locking such that, at least whenever the blocking bar is in the blocking position, (i) axial movement of the blocking bar cannot cause rotation of the rotation part, and (ii) the rotation part prevents axial movement of the blocking bar out of the blocking position;
• wherein a spring element exerts a torque on the rotation part, the torque acting in the direction of rotation of the rotation part which also brings about an axial movement of the blocking bar into the blocking position.