Patent ID: 9683650
Date: 2017-06-20
CPC Classifications: B60K,F16H,Y10T

Claim:
1. A lubrication structure for a reduction gear comprising: a first pair of reduction gears which rotates with an output shaft of a drive source and a second pair of reduction gears which is offset from the first pair of reduction gears in a rotation axis line direction thereof, both first and the second pairs of the reduction gears being accommodated in a case, the first pair of reduction gears being provided with a first driven gear and the second pair of reduction gears being provided with a second driven gear which rotation speed is slower than a rotation speed of the first driven gear; a catch tank accommodated in the case at positions to avoid overlapping in an up-down direction, the catch tank reserves a portion of lubrication oil in the case on a bottom portion thereof scooped up for supplying each portion to be lubricated with a scooped up lubrication oil; a first oil passage provided in the case and guiding the lubrication oil scooped up by the first driven gear to the catch tank; and a second oil passage provided in the case offset from the first oil passage in a rotation axis line direction of the first pair of reduction gears and guiding the lubrication oil scooped up by the second driven gear to the catch tank, wherein the second oil passage includes a receiving portion which receives the lubrication oil scooped up by the second driven gear and which guides the lubrication oil scooped up by the second driven gear to the first oil passage from the receiving portion in a direction different from a guiding direction of the lubrication oil scooped up by the second driven gear to the receiving portion.