Patent ID: 6335599
Filing Date: 2002-01-01
Classification: B60K

Abstract:
An actuator for driving a mode shifting device, comprising:motor having a motor shaft which outputs rotational torque according to electric current; an output member, moved by the rotational torque, for shifting drive modes according to positions thereof; a torque transmitting mechanism for transmitting the rotational torque from the motor shaft to the output member; a control mechanism for selecting drive modes and for controlling the electric current to energize the motor so as to provide the selected drive mode; a one-way rotational mechanism disposed between the motor shaft and the torque transmitting mechanism for preventing the motor shaft rotating against the motor; a rotational torque absorption mechanism disposed between the one-way rotational mechanism and the torque transmitting mechanism for absorbing the rotational torque, when the motor shaft is rotated and the output member can not be moved; and a rotational angle detecting means for detecting the rotational angle of the motor shaft.