ELECTRIC POWER STEERING DEVICE

摘要

Provided is an electric power steering device, in which the output shaft of an electric motor and a worm are connected by a coupling. At the worm side end portion of the motor output shaft and the motor output shaft side end portion of the worm, there are alternately formed arm portions, which are disposed at a predetermined interval in a circumferential direction on the faces confronting each other in an axial direction and which protrude in the axial direction. The coupling is made of an elastic member, which has a plurality of holes formed to insert those arm portions individually and which has torque transmitting portions formed between the adjoining holes.