BREATHER DEVICE FOR VEHICLE TRANSMISSION CASE

To provide a breather device for a vehicle transmission case, which has a structure capable of suppressing oil from flowing into a breather chamber through an oil discharge hole.SOLUTION: A protrusion 56 is formed at one end of a cover plate 50 so as to cover an oil discharge hole 42 and project tow...

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Hauptverfasser: ITO TATSUAKI, NAKAGAWA HIDEKI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a breather device for a vehicle transmission case, which has a structure capable of suppressing oil from flowing into a breather chamber through an oil discharge hole.SOLUTION: A protrusion 56 is formed at one end of a cover plate 50 so as to cover an oil discharge hole 42 and project toward a vehicle lower side at a predetermined distance from an inner wall 20. The protrusion 56 is formed so that a gap D from the inner wall 20 becomes smaller as it gets farther from the oil discharge hole 42. As a result, the oil scattered in a case 12 is suppressed from flowing into a breather chamber 60 via the oil discharge hole 42 by the protrusion 56. Moreover, when the oil flows through the gap D between the protrusion 56 and the inner wall 20, flow velocity of the oil flowing through the gap D between the protrusion 56 and the inner wall 20 is reduced, whereby the oil is suppressed from reaching the oil discharge hole 42.SELECTED DRAWING: Figure 2 【課題】油排出孔を介してブリーザ室内にオイルが流入することを抑制することができる構造を備えた車両用変速機ケースのブリーザ装置を提供する。【解決手段】カバープレート50の一端部には、油排出孔42を覆い且つ内部壁20に対して所定の間隔を隔てて車両下方側へ突き出す突出部56が形成され、突出部56は、油排出孔42から離れるほど内部壁20との間隙Dが小さくなるように形成されている。これにより、ケース12内を飛散させられるオイルは、突出部56によって油排出孔42を介してブリーザ室60に流入することが抑制され、且つオイルが突出部56と内部壁20との間隙Dを流通する場合には、突出部56と内部壁20との間隙Dを流通するオイルの流速が低下させられて油排出孔42に到達することが抑制される。【選択図】図2