| 摘要 |
<p>In a reduction differential gear for an electric vehicle, which consists of a planetary gear type reduction gear and a differential gear, the invention addresses the problem of, while reducing the device size and weight by employing an oil-bath lubrication as a lubrication means to increase a traveling distance per charge, sufficiently distributing a lubricant to each part of the gear without requiring to add a special component as a scratching-up means. The reduction differential gear for an electric vehicle comprises a combination of an electric motor (11), a planetary gear type reduction gear (12), a differential gear (13), and a lubrication means (14) and employs an oil bath lubrication as the lubrication means (14). In the reduction differential gear for an electric vehicle, the respective carriers (32, 54) of the reduction gear (12) and the differential gear (13) have rotational radii formed to have sizes less than or equal to an oil level and are configured to have scratching-up protrusions (46) on the outer circumferential surfaces thereof.</p> |
