Actuator for an automatic transmission provided with electrical actuation
An electrical actuation for an automatic transmission, preferably for selection actuation in automobiles in which a four-bar linkage transmission and a worm gear unit are arranged between the electric drive and the transmission. Shifting can be carried out with a low-output drive, particularly in the parked shifting position “P”, also when very large forces are required such as those occurring when the vehicle is parked on a hill.
1. An actuator for an automatic transmission provided with electrical actuation and an activating shaft, comprising:
a drive; and
a transmission with a variable transmission ratio between the drive and the automatic transmission, wherein said transmission comprises a conical gear unit.
2. An actuator according to claim 1 , wherein the drive is an electric motor.
3. An actuator according to claim 1 , wherein the drive is a pneumatic cylinder.
4. An actuator according to claim 1 , wherein the drive is a hydraulic cylinder.
5. An actuator according to claim 1 , wherein the transmission is constructed to have play.