OIL PUMP

PROBLEM TO BE SOLVED: To provide an oil pump in which a change of a flow passage area in a discharge port is moderate.SOLUTION: A housing (20) of an oil pump (10) has a suction port (31), a discharge port (40), and a partition part (33) for partitioning these suction port (31) and discharge port (40...

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Bibliographische Detailangaben
Hauptverfasser: WATANABE MANABU, SATO HIROAKI, KAWASHIMA KENJI, IIZUKA SHIMPEI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an oil pump in which a change of a flow passage area in a discharge port is moderate.SOLUTION: A housing (20) of an oil pump (10) has a suction port (31), a discharge port (40), and a partition part (33) for partitioning these suction port (31) and discharge port (40). The discharge port (40) includes discharge groove parts (41, 42) formed in a groove-like manner so as to guide an oil from the partition part (33), and also it has an extension part (43) which is adjacent to the discharge groove parts (41, 42) and which extends continuously from an end part of the partition part (33). The extention part (43) includes a taper surface part (43a) formed in downward inclination from the end part of the upper surface of the partition part (33).SELECTED DRAWING: Figure 2 【課題】吐出ポート内における流路面積の変化が緩やかなオイルポンプを提供すること。【解決手段】オイルポンプ(10)のハウジング(20)は、吸入ポート(31)と、吐出ポート(40)と、これらの吸入ポート(31)及び吐出ポート(40)を仕切る仕切り部(33)と、を有する。吐出ポート(40)は、仕切り部(33)からオイルを導くよう溝状に形成された吐出溝部(41,42)を含むと共に、吐出溝部(41,42)に隣接して仕切り部(33)の端部から連続して延びる延出部(43)を有している。延出部(43)は、仕切り部(33)の上面の端部から下り勾配に形成されたテーパ面部(43a)を含む。【選択図】図2