ELECTRICALLY DRIVEN POWER STEERING DEVICE

摘要

PURPOSE:To increase the assist range of an electric motor after the connection by sooner putting a clutch mechanism into connection by changing a rate of change of the displacement amount into plural stages in operating of a steering wheel. CONSTITUTION:A change rate switching means 80 for increasing the assist range of an electric motor after the connection by sooner putting a clutch mechanism into connection through a process of changing the change rate of the displacement amount of an input shaft and an output shaft into plural stages is provided on the way of a transmitting path of rotational force of the input shaft 12 and the output shaft 16 of an electrically driven power steering device for assisting operating force of a steering wheel by transmitting driving force of the electric motor to the output shaft 16 through a clutch mechanism 38.