| 摘要 |
PURPOSE:To surely supply oil to a lubricating part, by providing a center oil path, supply holes and an orifice hole in a transmission shaft and mounting a check valve to the supply hole. CONSTITUTION:A transmission provides a center oil path 130 to be drilled in the center part of a transmission shaft 31, and this center oil path 130 communicates with an oil reservoir through an oil path 132, inner side oil path 52 through a pair of supply holes 137 and each part of the transmission through an orifice hole 151. The transmission, which mounts a supply pump interposing halfway the oil path 132, provides a check valve 138, preventing a reverse flow of oil from the inner side oil path 52, in the supply hole 137. In this way, if the inner side oil path 52 generates a pressure lower than that in the center oil path 130 by the leakage of oil, the operating oil is supplied to the inner side oil path 52 by opening the check valve 138. While oil in the center oil path 130 is supplied to a lubricating part through the orifice hole 151. Accordingly, the oil can be surely supplied to the lubricating part with no trouble of supply of the operating oil to the inner side oil path 52.
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