| 摘要 |
PROBLEM TO BE SOLVED: To provide an in-wheel motor drive unit having a structure in which an inclination of a wheel hub is hardly transmitted to a gear shaft of a reduction gear even if the wheel hub is inclined due to the application of a large moment load to the wheel bub.SOLUTION: An in-wheel motor drive unit comprises: a motor part A which generates a drive force; a reduction gear B composed of a plurality of gears which reduce the rotation of the motor part A, and output it; and a wheel hub C which transmits the output from the reduction gear B to a drive wheel. A drive shaft 30 for transmitting the output from the reduction gear B to the wheel hub C is arranged integrally with the hub wheel 41 or separately from the hub wheel, tooth faces 31, 32 for transmitting power are formed at an end face of the drive shaft 30 of the hub wheel 41 at the reduction gear B side, and at an axial end face of a final gear 24 constituting the reduction gear B at the wheel hub C side, the tooth face 31 of the drive shaft 30 of the hub wheel C and the tooth face 32 of the final gear 24 of the reduction gear B abutting on the tooth face 31 are engaged with each other so as to oscillate, and thus an inclination of the drive shaft 30 of the hub wheel C is not transmitted to a gear shaft of the final gear 24 of the reduction gear B.SELECTED DRAWING: Figure 1 |
