OIL TANK

PROBLEM TO BE SOLVED: To enable an oil tank having a gas-liquid separation structure to be manufactured with the reduced number of components and reduced assembly man-hours.SOLUTION: The oil tank includes: a right side member 10 and a left side member 20 butted against each other; a space 40 formed between the right side member 10 and the left side member 20; an inlet port 41, an outlet port 42, and an exhaust port 43 communicating with the inside/outside of the space 40; a first passage 50 through which oil O flowed in from the inlet port 41 is caused to flow toward the liquid level L of the oil O in the space 40; and a second passage 60 through which oil mist that is produced in the space 40 is caused to flow toward the exhaust port 43. The first passage 50 is formed of first vertical ribs 52a, 52b provided on an inner side of the right side member 10, and second vertical ribs 54a, 54b provided on an inner side of the left side member 20. The second passage 60 is formed of first horizontal ribs 61a to 61d provided on the inner side of the right side member 10, and second horizontal ribs 62a to 62d provided on the inner side of the left side member 20.SELECTED DRAWING: Figure 3 【課題】気液分離構造を備えるオイルタンクを少ない部品点数および組立て工数で製造可能とする。【解決手段】互いに突き合わされる右側部材１０および左側部材２０と、右側部材１０と左側部材２０との間に形成される空間４０と、空間４０の内外に連通する入口４１，出口４２，排気口４３と、入口４１から流入したオイルＯが空間４０内のオイルＯの液面Ｌに向かって流れる第１流路５０と、空間４０内で発生したオイルミストが排気口４３に向かって流れる第２流路６０と、を有する。第１流路５０は、右側部材１０の内側に設けられた第１垂直リブ５２ａ，５２ｂと、左側部材２０の内側に設けられた第２垂直リブ５４ａ，５４ｂと、によって形成され、第２流路６０は、右側部材１０の内側に設けられた第１水平リブ６１ａ〜６１ｄと、左側部材２０の内側に設けられた第２水平リブ６２ａ〜６２ｄと、によって形成される。【選択図】図３