ELECTRIC POWER STEERING DEVICE

摘要

PROBLEM TO BE SOLVED: To eliminate tooth hammering noise without hindering smooth rotation even after the durability test and with a change in the environmental conditions. SOLUTION: An electric power steering device is structured so that a recess is formed at the tooth crest 40a of each tooth 40 of a driven gear 4, and the tooth tip 40b is allowed to deflect with a load torque applied to the meshing part.