| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission ratio variable mechanism capable of enhancing rigidity of support regarding the transmission ratio variable mechanism and reducing drive sound, and a vehicular steering device provided with this. SOLUTION: The transmission ratio variable mechanism includes an input member 20 and an output member 22 rotatable around a first axis A; an inner ring 391 having first and second end surfaces 71, 73 and differential-rotatably connecting the respective members 20, 22; and a motor 23 for transmission ratio variable mechanism capable of rotationally driving an outer ring 392. A second axis B as a central axis of the inner ring 391 and the outer ring 392 is inclined relative to the first axis A. A first convexoconcave engagement part 64 is provided on a motive power transmission surface 70 of the input member 20 and the first end surface 71 of the inner ring 391. A second convexoconcave engagement part 67 is provided on a motive power transmission surface 72 of the output member 22 and the second end surface 73 of the inner ring 391. COPYRIGHT: (C)2009,JPO&INPIT |
