ELECTRIC POWER STEERING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an electric power steering for reducing the rotation of a motor with a warm gear in which stable performance can be obtained without being required by a warm or the output shaft of the electric motor nor being affected by assembling accuracy.

SOLUTION: The output shaft 8 of the electric motor 1 and the worm 3 are connected by a coupling 20. The coupling 20 includes 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 alternately protrude in the axial direction, and a plurality of holes formed to insert those arm portions individually. Torque transmitting portions between the adjoining holes are formed with an elastic member.

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