| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubricating structure of a planetary gearing mechanism capable of stably lubricating irrespective of the rotating state. SOLUTION: As the lubricating structure of a power split planetary gear 21 which is the planetary gear mechanism, a lubricating oil passage 31 for feeding lubricating oil into a needle bearing 35 is formed in a planetary shaft 30 to rotatably support a planetary gear 24. The planetary shaft 30 is connected to a rotatable planetary carrier 25. A catch tank 70 capable of allowing lubricating oil stored by flow to the planetary shaft 30 from an opening 80 to flow into the lubricating oil passage 31, and rotatably provided with a weight 85 on the side opposite to that where the opening 80 is positioned. Thereby, since the catch tank 70 is rotated according to the rotating state of the planetary carrier 25, the lubricating oil can be contained irrespective of the rotating state so as to enable stable lubrication by causing the contained lubricating oil to flow into the lubricating oil passage 31. COPYRIGHT: (C)2010,JPO&INPIT
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