BELT TYPE DRIVELINE AND RACK ASSIST TYPE ELECTRIC POWER STEERING APPARATUS HAVING THE SAME

摘要

PURPOSE: A belt-type driveline and a rack-assist type electric power steering device with the same are provided to improve durability by protecting the peripheral parts of an electronic control device and a motor for driving a nut pulley. CONSTITUTION: A belt-type driveline comprises a ball nut(320), a nut pulley(310), and a rotation preventing unit(315). The ball nut is coupled to a rack bar to slide the rack bar. The nut pulley is coupled to the outer circumference of the ball nut, and rotates the ball nut with the driving force of a belt. The rotation preventing unit stops the nut pulley after the nut pulley rotates at a predetermined angle. The rotation preventing unit comprises a slot groove(315b) and a support member(315a).