DISC BRAKE ACTUATOR FOR A VEHICLE

The invention relates to a disc brake actuator (2) for a vehicle. The disc brake actuator (2) comprises an electrical drive (4) and a transmission unit (11) which is driven by the electrical drive (4). The transmission unit (11) comprises a ramp transmission system (12) and a threaded transmission system (13). The ramp transmission system (12) and the threaded transmission system (13) are arranged in series in the force flow of the transmission unit (11). The invention proposes that a fixing unit (16) is provided for fixing an operational state of the disc brake actuator (2) independent on the energization of the electrical drive (4).