| 摘要 |
PURPOSE:To improve lubricating performance by disposing a bearing bushing between a turbine shaft and a pump shaft to form an inclined groove for forcibly sending oil with the difference between rotational frequencies of both shafts on the inner peripheral surface of the bearing bushing. CONSTITUTION:A pump shaft 13 is disposed through a bearing bushing 54 in a turbine shaft 27 of an automatic transmission to have an end connected to an oil pump unit 14. Lubricating oil is supplied to the pump shaft 13 from the turbine side through an oil hole 27c formed in the turbine shaft 27, and further, a groove 54b for forcibly sending oil is formed on the inner peripheral surface of the bearing bushing 54 to improve lubricating performance. Said groove is inclined such that it serves to forcibly send the lubricating oil from the pump unit 14 side to the turbine side by the difference of rotational frequencies between the turbine shaft and the pump shaft.
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