VEHICLE DRIVE UNIT

• Main Authors: MAEDA TAKUHIRO, TOKORO SHOHEI
• Format: Patent
• Language: English; Japanese
• Published: 13.09.2021
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To improve mountability to a vehicle.SOLUTION: A vehicle drive unit comprises a planetary gear mechanism 6 and a first clutch C1. The first clutch C1 has a clutch sleeve 10 which can switch an engagement state that either of a sun gear S and a ring gear R, and a carrier CR are integrally and rotatably connected to each other, and a release state that the connection is released, a piston 14 which can slide in an axial direction by operational hydraulic pressure, and can be pressed so as to be switchable between the engagement state and the release state of the clutch sleeve 10, and a return spring 15 arranged between the carrier CR and the clutch sleeve 10, and energizing the clutch sleeve 10 in an axial direction reverse to a pressing direction by the piston 14. The return spring 15 is arranged so as to be at least partially overlapped on the carrier CR when viewed from the axial direction, and to be at least partially overlapped on the carrier CR in the axial when viewed from a radial direction.SELECTED DRAWING: Figure 3 【課題】車両への搭載性を向上する。【解決手段】遊星歯車機構６と第１クラッチＣ１とを備える。第１クラッチＣ１は、サンギヤＳ及びリングギヤＲの一方とキャリヤＣＲとを一体回転可能に連結した係合状態と連結を解除した解放状態とに切替可能なクラッチスリーブ１０と、作動油圧により軸方向に摺動可能であり、クラッチスリーブ１０の係合状態と解放状態とを切り替えるように押圧可能なピストン１４と、キャリヤＣＲとクラッチスリーブ１０との間に設けられ、クラッチスリーブ１０をピストン１４による押圧方向とは反対向きの軸方向に付勢するリターンスプリング１５と、を有する。リターンスプリング１５は、軸方向から視て少なくとも一部がキャリヤＣＲと重なると共に、径方向から視て少なくとも一部がキャリヤＣＲと軸方向に重なるように配置される。【選択図】図３