| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reduction gear which can perform sufficient lubrication with respect to a bearing of a planetary gear dipped into lubricating oil, moreover improve the life of the components extremely. <P>SOLUTION: A planetary gear mechanism dipped into the lubricating oil has a planetary gear 20b supported with a planetary shaft 20c perpendicularly arranged in a carrier 20d through a bearing 20g. The planetary shaft 20c has a vertical hole 21a and a through side hole 21b which intersects the vertical hole 21a and reaches the bearing 20g, and a retainer 20h preventing the planetary gear 20b from coming-out has an oil taking-in opening 22 communicating with the vertical hole 21a. The oil taking-in opening 22 is formed as an opening facing toward a rotary direction of the carrier 20d, and when the carrier 20 rotates, the lubricating oil sent from the oil taking-in opening 22 can be supplied to the bearing 20g. <P>COPYRIGHT: (C)2009,JPO&INPIT |
