PROBLEM TO BE SOLVED: To provide a motor drive unit for a vehicle which suitably distributes a lubricant amount supplied to a motor part and a lubricant amount supplied to a reduction part by a simple constitution.SOLUTION: A motor drive unit for a vehicle has: an oil pump which sucks a lubricant from an oil tank; a supply oil passage which extends from a discharge port of the oil pump up to a motor rotating shaft; an axial line oil passage (57) which is arranged at the motor rotating shaft, connected to the supply oil passage at one end, and extends toward the reduction part at the other end; a rotor oil passage (59) which is arranged at a rotor (24d), extends to a radial direction, is connected to the axial line oil passage at an inside-diameter side end, and connected to an internal space of a motor part at an outside-diameter side end; a recovery oil passage which extends from the motor part and an internal space of the reduction part up to the oil tank; and an on-off valve (81) which is arranged at the rotor oil passage, and closed by receiving a centrifugal force or hydraulic pressure.SELECTED DRAWING: Figure 5
【課題】簡易な構成により、モータ部に供給する潤滑油量と減速部に供給する潤滑油量を運転状態に応じて適切に配分する車両用モータ駆動装置を提供する。【解決手段】車両用モータ駆動装置は、オイルタンクから潤滑油を吸入するオイルポンプと、オイルポンプの吐出口からモータ回転軸まで延びる供給油路と、モータ回転軸に設けられて一端が供給油路と接続し他端が減速部に向かって延びる軸線油路(57)と、ロータ(24d)に設けられて径方向に延び内径側端が軸線油路と接続し外径側端がモータ部の内部空間と接続するロータ油路(59)と、モータ部および減速部の内部空間からオイルタンクまで延びる回収油路と、ロータ油路に設けられて遠心力または油圧を受けて閉じる開閉弁(81)を有する。【選択図】図5
MOTOR DRIVE UNIT FOR VEHICLE
車両用モータ駆動装置
2017-03-23
Patent
Elektronische Ressource
Japanisch
IPC: | F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F16K VALVES , Ventile / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES |
VEHICLE MOTOR DRIVE UNIT AND VEHICLE HAVING VEHICLE MOTOR DRIVE UNIT
Europäisches Patentamt | 2016
|