OIL FILTER STRUCTURE OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide an oil filter structure of an internal combustion engine in which the oil filter can be made small as much as possible and its maintenance can be easily carried out.SOLUTION: An oil filter structure of an internal combustion engine in which an oil filter 120 having a filter element 123 stored in a filter housing 121 is arranged at an engine case 20 is constituted in such a way that the filter element 123 is formed in a hollow column-like shape, the filter housing 121 is formed as a cylindrical shape with one side surface being opened and the other side surface being closed and the filter housing is integrally formed to an outer wall of the engine case 20, the oil filter 120 is constituted in such a way that an opening of the filter housing 121 storing the filter element 123 is closed by a lid member 122 and a groove V is formed at a cylindrical inner peripheral surface of the filter housing 121 from one part opening end toward a deep side in an axial direction of a cylindrical center axis Lf at the cylindrical inner peripheral surface.SELECTED DRAWING: Figure 11 【課題】オイルフィルタを可及的に小型化して、かつメンテナンスも容易に行える内燃機関のオイルフィルタ構造を供する。【解決手段】フィルタエレメント123をフィルタハウジング121に収容したオイルフィルタ120が機関ケース20に設けられる内燃機関のオイルフィルタ構造において、フィルタエレメント123は、中空円柱状をなし、フィルタハウジング121は、一側面を開口し他側面を閉塞した円筒状をなして機関ケース20の外壁に一体に形成され、オイルフィルタ120は、フィルタエレメント123を収容したフィルタハウジング121の開口が蓋部材122により閉塞されて構成され、フィルタハウジング121の円筒状内周面に、一部開口端から円筒状内周面の円筒中心軸Lfの軸方向奥側に向けて溝条Vが形成されることを特徴とする。【選択図】図１１