| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact and light-weight in-wheel motor driving device having superior NVH characteristic while securing durability.SOLUTION: In an in-wheel motor driving device 21 rotating and driving a decelerator input shaft 25 having eccentric portions 25a, 25b by a motor portion A, decelerating rotation of the decelerator input shaft 25 by a decelerating portion B, and transmitting the same to a decelerator output shaft 28, the decelerating portion B includes the decelerator input shaft 25, curved plates 26a, 26b performing revolving motion in accompany with rotation of the decelerator input shaft 25, on the rotation axis, outer pins 27 rotatably held by a casing 22 through needle roller bearings 27a, and causing rotational motion of the curved plates 26a, 26b, and a motion converting mechanism converting the rotational motion of the curved plates 26a, 26b into rotating motion on the rotation axis of the decelerator input shaft 25, and transmitting the same to the decelerator output shaft 28. In the needle roller bearings 27a of the outer pins 27, an axial clearance after assembling, between an outer ring and a retainer is 0.08-0.90 mm. |
