PROBLEM TO BE SOLVED: To provide an improved breather structure which can surely prevent that oil in an in-wheel motor drive unit is ejected from a breather.SOLUTION: A breather structure 71 comprises: a first internal pressure release hole 72 which penetrates a speed reduction part casing 22b, and releases the internal pressure of the speed reduction part to the outside; a catch tank 73 which is arranged outside the speed reduction part, and connected to an outlet 72b of the first internal pressure release hole; a reflux passage 74 in which an inlet 74a is connected to a bottom of the catch tank, and the outlet 74b is connected to the reduction part side; a oneway valve 76 which is arranged at the reflux passage, permits a flow to the outlet from the inlet, and blocks a reverse flow; and a second internal pressure release hole 75 which is formed at an upper part rather than the bottom of the catch tank, and releases the internal pressure of the catch tank to the outside.SELECTED DRAWING: Figure 2
【課題】インホイールモータ駆動装置内部の油がブリーザから噴出することを確実に防止できる、改良されたブリーザ構造を提供する。【解決手段】ブリーザ構造71は、減速部ケーシング22bを貫通し減速部の内圧を外方へ解放する第1内圧解放孔72と、減速部の外方に配置されて第1内圧解放孔の出口72bと接続するキャッチタンク73と、入口74aがキャッチタンクの底部と接続し出口74bが減速部側と接続する還流通路74と、還流通路に設けられて入口から出口への流れを許容し逆方向の流れを阻止する一方向弁76と、キャッチタンクの底部よりも上方に設けられてキャッチタンクの内圧を外方へ解放する第2内圧解放孔75とを備える。【選択図】図2
BREATHER STRUCTURE OF IN-WHEEL MOTOR DRIVE UNIT
インホイールモータ駆動装置のブリーザ構造
2016-07-25
Patent
Electronic Resource
Japanese
European Patent Office | 2016
|BREATHER STRUCTURE OF AUTOMOTIVE MOTOR DRIVE UNIT AND IN-WHEEL MOTOR DRIVE UNIT INCLUDING THE SAME
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