POWER TRANSMISSION UNIT FOR ELECTRIC VEHICLE

To provide a power transmission unit for an electric vehicle for driving left and right wheels with one electric motor which enables a case for housing an axle and a gear mechanism to be molded by casting and achieves downsizing.SOLUTION: A power transmission unit 41 includes: a motor case 50 that i...

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Bibliographische Detailangaben
Hauptverfasser:	MOTOOKA AKIRA, IMA AKIHIRO, TERADA MAI, IWAKI KOJI, TSUKAMOTO MICHIO, KIYOOKA KOJI, SAWADA HITOSHI, MORISHITA TAKESHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES BLASTING ENGINEERING ELEMENTS AND UNITS GEARING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INSTRUMENTATION OR DASHBOARDS FOR VEHICLES LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	To provide a power transmission unit for an electric vehicle for driving left and right wheels with one electric motor which enables a case for housing an axle and a gear mechanism to be molded by casting and achieves downsizing.SOLUTION: A power transmission unit 41 includes: a motor case 50 that is provided on the same side as a second axle 19 with respect to a center between a first axle 18 and the second axle 19, separated to right and left, in a right-left direction and that houses an electric motor 70; a first axle case 43 housing a reduction gear mechanism 78, a differential gear mechanism 118, and the first axle 18; and a second axle case 130 that is fixed to the first axle case 43 in a separable manner and houses the second axle 19.SELECTED DRAWING: Figure 3 【課題】１つの電動モータで左右車輪を駆動するための電動車両用動力伝達ユニットにおいて、車軸及び歯車機構を収容するケースを鋳造で成形することを可能としながら、小型化を図る。【解決手段】動力伝達ユニット４１は、左右に分かれた第１車軸１８及び第２車軸１９間の中央に関して、左右方向について第２車軸１９と同じ側に配置され、電動モータ７０が収容されたモータケース５０と、減速歯車機構７８及び差動歯車機構１１８と第１車軸１８とが収容された第１車軸ケース４３と、第１車軸ケース４３に対して分離自在に固定され、第２車軸１９が収容された第２車軸ケース１３０とを含む。【選択図】図３