VEHICLE DRIVING DEVICE

• Main Authors: YAMAMOTO TETSUYA, MYOKI AIKO
• Format: Patent
• Language: English; Japanese
• Published: 29.08.2019
• Subjects: 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

To reliably supply lubricating oil to a bearing of an intermediate gear positioned in a narrow space by means of a simple structure.SOLUTION: An in-wheel motor driving device 21 comprises an electric motor for driving a wheel, a balanced shaft gear reducer 23 which decelerates and outputs rotation of the electric motor, and a casing 25 housing a parallel axis gear reducer 23. A bearing 41 for rotatably supporting an intermediate gear 33 of the parallel axis gear reducer 23 is installed on a wall surface 55 of the casing 25. An addendum outer diameter of the intermediate gear 33 is larger than an outer ring outer diameter of the bearing 41. The bearing 41 is disposed in a narrow space between the wall surface 55 of the casing 25 and an end surface of a recessed part of the intermediate gear 33. An addendum of the intermediate gear 33 is proximal to a top surface 58 of the casing 25, and a recessed part 59 for collecting lubricating oil scattered by rotation of the intermediate gear 33 is formed in a portion of the top surface 58 of the casing 25 above the bearing.SELECTED DRAWING: Figure 2 【課題】 簡易な構造により、狭隘な空間に配置された中間歯車の軸受に潤滑油を確実に供給する。【解決手段】 車輪を駆動する電動モータと、電動モータの回転を減速して出力する平衡軸歯車減速機２３と、平行軸歯車減速機２３を収容するケーシング２５とを備えたインホールモータ駆動装置２１であって、平行軸歯車減速機２３の中間歯車３３を回転自在に支持する軸受４１がケーシング２５の壁面５５に取り付けられ、中間歯車３３の歯先外径が軸受４１の外輪外径よりも大きく、ケーシング２５の壁面５５と中間歯車３３の凹部端面との間の狭隘な空間に軸受４１が配され、ケーシング２５の天面５８に中間歯車３３の歯先が近接し、ケーシング２５の天面５８の軸受上方部位に、中間歯車３３の回転により飛散された潤滑油を滞留させる凹部５９を形成する。【選択図】 図２