| 摘要 |
The present invention relates to a planetary gear set comprising: a pinion gear engaged between a sun gear and a ring gear; a carrier mounted on an end portion of both sides of the pinion gear, wherein a stepped groove is formed on a side; a pinion shaft including a body inserted through the pinion gear and the carrier, and a stepped unit formed on an end of the body to be inserted into the stepped groove; and a ring gear body arranged to support an outer side of the stepped unit of the pinion shaft engaged in an inner circumferential surface of the ring gear. The performance of the pinion gear and a bearing is improved by preventing the pinion shaft from being inclined. |
