Patent ID: 7472773
Filing Date: 2009-01-06
Classification: B62D,F16C

Abstract:
1. An electrically driven power steering apparatus comprising: a housing; a ball screw shaft extending within said housing and connected to a steering mechanism; a motor having a rotor; a ball screw nut means for converting a rotational force generated from a motor into a force acting in an axial direction and transferring the same force to said ball screw shaft; a bearing for supporting said ball screw nut means so as to be rotatable with respect to said housing; and a presser member, screwed to said ball screw nut means, for thus pressing said bearing against said ball screw nut means, wherein said presser member has a thread for engaging with a tread of said ball screw nut means, and a connecting device capable of limiting a relative rotation between said presser member and said ball screw nut means even if a bonding force between the threads is lost, the function of limiting a relative rotation being performed after said threads are fastened.