VEHICULAR STEERING DEVICE

PROBLEM TO BE SOLVED: To provide a vehicular steering device capable of reliably suppressing the inverse input in a steering wheel 1 by the automatic steering of an automatic steering actuator 3 with low power consumption, and easily steering the steering wheel 1 by a driver even during the automatic steering. SOLUTION: The vehicular steering device comprises the automatic steering actuator 3 to turn a turning wheel by automatically steering a lower steering shaft 5 separately from the steering of an upper steering shaft 4, and a transmission torque suppression actuator 2 which is interposed between the automatic steering actuator 3 and the steering wheel 1 to suppress the transmission torque Tr to be transmitted to the steering wheel 1 side by the action of the automatic steering actuator 3, and further comprises a suppression torque calculation means 76 to calculate the suppression torque Td to suppress the transmission torque Tr when the automatic steering actuator 3 is operated, and a suppression torque output means 77 to output the suppression torque Td to the transmission torque suppression actuator 2. COPYRIGHT: (C)2006,JPO&NCIPI