| 摘要 |
<p>According to an embodiment of the present invention, a planetary gear set comprises: a carrier spaced from a rotational center axis at a predetermined distance, wherein a shaft insertion hole which is formed to be aligned with the rotational center axis is formed and a carrier groove is formed in an outer surface on a side along a predetermined circle which is formed around the rotational center axis; a pinion shaft inserted into the shaft insertion hole, wherein a pinion gear is rotationally arranged in an outer circumferential surface and a shaft groove is formed in an inner side of an area corresponding to the carrier groove; and a shaft fixing ring mounted to be inserted into the carrier groove, wherein one side is inserted into the shaft groove for the pinion shaft to be fixated on the carrier.</p> |
