A vehicular electric power steering apparatus with an enhanced supporting
structure for improving the bending strength of a rack bar includes a
motor having a rotor, a stator and a motor shaft inside the same; a
housing installed such that it can communicate with the motor; a rack bar
installed inside of the motor and housing and having a ball screw
installed at the outer circumferential surface of one end and a rack gear
formed at the outer circumferential surface of the other end; a ball nut
installed at the outside of the ball screw for supporting the rack bar at
a first point and moving the same in the axial direction; and a rack guide
installed at the inside of the housing for supporting the rack bar at a
second point and guiding axial movement by enclosing the rear surface of
the rack gear, where the rack bar is supported at a third point by a
supporting bush disposed at the inside of the front end of the housing
adjacent to the rack guide.
