OIL PASSAGE STRUCTURE OF TRANSMISSION
PROBLEM TO BE SOLVED: To reduce a driving force of an oil pump and increase lubricity of gears.SOLUTION: This invention is operated in such a way that a manual shaft rotated in response to an operation of a shift lever is supported at a supporting hole of a transmission case, a part of a passage ran...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To reduce a driving force of an oil pump and increase lubricity of gears.SOLUTION: This invention is operated in such a way that a manual shaft rotated in response to an operation of a shift lever is supported at a supporting hole of a transmission case, a part of a passage ranging from a pressure filter to an upper part of the transmission case of an oil pump downstream side oil passage is formed by an oil passage in the manual shaft, the manual shaft passes through a circumferential wall contacted with the inner surface of the supporting hole of the transmission case and has a communication hole communicating the in-shaft oil passage with the surrounding area, the transmission case has a communication passage having an inlet port opened at the inner surface of the supporting hole and an outlet port opened at an oil pump upstream side oil passage, when the manual shaft is placed at a position other than P-range, the communication hole is closed by the inner surface of the supporting hole and in turn when the manual shaft is placed at a position in P-range, the communication hole is communicated with the inlet port of the communication passage.
【課題】この発明は、オイルポンプの駆動力を低減し、ギヤの潤滑性を高めることを目的とする。【解決手段】この発明は、シフトレバーの操作に応じて回転するマニュアルシャフトを変速機ケースの支持孔に支持し、マニュアルシャフトのシャフト内オイル通路によってオイルポンプ下流側オイル通路のうちプレッシャフィルタから変速機ケースの上方に到る通路の一部を形成し、マニュアルシャフトは変速機ケースの支持孔内面に接する周壁を貫通してシャフト内オイル通路を外部と連通させる連通孔を備え、変速機ケースは支持孔内面に開口する流入口を有するとともオイルポンプ上流側オイル通路に開口する流出口を有する連通路を備え、マニュアルシャフトがPレンジ以外の位置にある場合、連通孔を支持孔内面によって閉鎖する一方、マニュアルシャフトがPレンジに位置する場合、連通孔を連通路の流入口と連通するようにしたことを特徴とする。【選択図】図6 |
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