| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball screw apparatus, along with an electric power steering apparatus, preventing the clogging of balls, and also having high efficiency of transmitting torque. <P>SOLUTION: The ball screw apparatus includes a returning way L2 by mounting a circulating member 15 in mounted holes 16, 17 formed in the ball screw nut 13. The ball screw nut 13 includes a base 51 and an enlarged diameter section 52. In the base, a distance D from an axis center O1 of a rack shaft 3 to a bottom 14a of a nut side screw groove 14 is constant, and in the enlarged diameter section the distance D is larger than that of the base 51. The enlarged diameter section 52 includes a connection 34. <P>COPYRIGHT: (C)2012,JPO&INPIT |
