Lubrication structure for planetary gear apparatus

A lubrication structure for a planetary gear apparatus, the lubrication structure comprising:

• a pinion shaft having a first discharge hole defined in the pinion shaft in a direction toward a sun gear, and a second discharge hole defined in the pinion shaft in a direction opposite to the sun gear;
• and
• an oil guide device coupled to the pinion shaft and configured to guide collected oil to the first discharge hole or the second discharge hole,
• wherein the oil guide device comprises:
• a first ring part disposed adjacent to the pinion shaft;
• a second ring part disposed at an interval from the first ring part;
• and
• a pipe part protruding from one surface of the first ring part in a direction toward the pinion shaft, the pipe part being positioned in the pinion shaft,
• wherein an inside of the pipe part is divided by a partition wall into a first passageway disposed adjacent to the first discharge hole, and a second passageway disposed adjacent to the second discharge hole,
• wherein a first collection part, which is connected to the first passageway from an inner-diameter portion of the first ring part and an inner-diameter portion of the second ring part, and a second collection part, which is connected to the second passageway from an outer-diameter portion of the first ring part and an outer-diameter portion of the second ring part, are defined by the interval between the first ring part and the second ring part, and
• wherein the sun gear has at least one first oil hole and a second oil hole, the second oil hole connecting the at least one first oil hole and the first collection part, the second oil hole being defined in a portion of a carrier positioned between the sun gear and the pinion shaft.