| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology capable of effectively lubricating the inside of an in-wheel motor driving device even when a wheel is driven in a backward rotating direction.SOLUTION: An in-wheel motor driving device includes a motor portion, a decelerating portion, and a wheel hub, and the decelerating portion has a pair of eccentric members connected to a motor-side rotating member and formed eccentric, a pair of revolving members respectively mounted in a manner that inner peripheries are relatively rotatable to outer peripheries of the eccentric members, outer peripheral engagement members engaged with the outer peripheral portions of the revolving members to generate rotational motion of the revolving members, inner engagement members connected to a wheel-side rotating member and for extracting the rotational motion of the revolving member, and a collar member (29) which is an annular body surrounding the motor-side rotating member at a position on an inner diameter side with respect to the outer peripheral engagement members and on an outer diameter side with respect to the inner engagement members, and is inserted between the pair of revolving members. The collar member includes an oil passage (29g) extended while intersecting to the backward rotating direction at an obtuse angle (β) while applying an outer periphery of the collar member as a start point and its inner periphery as a terminal point.SELECTED DRAWING: Figure 6 |
