| 摘要 |
<p>The present invention addresses the problem of improving the lubricity of the bearings (42) of outer pins (23) that are located at a distance from the center of a speed reducer casing (4b) in an in-wheel motor driving device that uses a cycloidal speed reducer for the speed reducer (2). An in-wheel motor driving device that uses a cycloidal speed reducer and is configured so that: outer pin insertion holes (41) are provided on the same axis as the outer pins (23) on a pair of flanges (40b) of an outer pin housing (40); the outer pins (23) are supported to rotate freely by bearings (42) that are inserted in said outer pin insertion holes (41); an external gear (21) is made oscillate eccentrically by rotation of the input shaft (13); and the rotation of said external gear (21) is output from an output shaft (24) disposed on the same axis as the input shaft (13). The in-wheel motor driving device is configured so that a sloped inner guiding wall (43), which slopes from the center of the axial direction towards the outer pin insertion holes (41), is formed on the cylindrical section (40a) of the outer pin housing (40), and lubricating oil is supplied to bearings (42) inserted inside the outer pin insertion holes (41) along the sloped inner guiding wall (43).</p> |
