Abstract: The invention relates to an electrically driven clutch actuators (1) for actuating the clutch of a transmission of a vehicle. An actuator comprises a spindle nut (11) on a spindle (9) and a pressure piece (13) displaceable relative to the spindle nut (11) and coupled to the spindle nut by a biasing spring (15). By rotation of the threaded spindle under a driving force of an electric motor (5), the spindle nut (11) compresses the biasing spring (15) and displaces the pressure piece (13) to disengage the clutch. A latching mechanism (16) is configured to limit displacement of the spindle nut away from the pressure piece under the force of the expanding biasing spring when the driving force is reduced below a predetermined level. Further, a control unit is described that reduces the driving force in response to a trigger condition to reduce power consumption in the clutch disengaged state.

Abstract: The invention relates to an electrically driven clutch actuators (1) for actuating the clutch of a transmission of a vehicle. An actuator comprises a spindle nut (11) on a spindle (9) and a pressure piece (13) displaceable relative to the spindle nut (11) and coupled to the spindle nut by a biasing spring (15). By rotation of the threaded spindle under a driving force of an electric motor (5), the spindle nut (11) compresses the biasing spring (15) and displaces the pressure piece (13) to disengage the clutch. A latching mechanism (16) is configured to limit displacement of the spindle nut away from the pressure piece under the force of the expanding biasing spring when the driving force is reduced below a predetermined level. Further, a control unit is described that reduces the driving force in response to a trigger condition to reduce power consumption in the clutch disengaged state.

Abstract: A clutch actuator assembly includes a drive member, a threaded rod including a first end operatively connected to the drive member, a second end, and an intermediate portion including a plurality of threads extending therebetween. A member is threadably engaged with the plurality of threads of the threaded rod, a clutch actuator member is arranged at the second end of the threaded rod, and a velocity brake is operatively coupled to the threaded rod. The velocity brake decelerates rotation of the threaded rod.

Abstract: A clutch actuator assembly includes a drive member, a threaded rod including a first end operatively connected to the drive member, a second end, and an intermediate portion including a plurality of threads extending therebetween. A member is threadably engaged with the plurality of threads of the threaded rod, a clutch actuator member is arranged at the second end of the threaded rod, and a velocity brake is operatively coupled to the threaded rod. The velocity brake decelerates rotation of the threaded rod.