IN-WHEEL MOTOR DRIVE DRIVE

• Main Authors: WATANABE YASUTO, SUGIURA SAORI
• Format: Patent
• Language: English; Japanese
• Published: 30.03.2017
• 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; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To cool a lubricant by a simple structure, without increasing the number of oil passages in a lubrication mechanism.SOLUTION: In an in-wheel motor drive device 21 including a motor A, a speed reducer B constituted of a parallel axis gear reducer 39 consisting of a plurality of gears 30-33, a wheel bearing C, and a lubrication mechanism for supplying lubricant to the motor A and speed reducer B by means of a rotary pump 56, where the motor A and speed reducer B are housed in a casing 22, an external oil passage 73, exposed to the outside of the casing 22, is provided in a part of an oil passage 57 for pressure feeding the lubricant from the rotary pump 56 to the motor A, and the external oil passage 73 is coated with a water-retaining material for cooling the lubricant by the heat of vaporization of the water.SELECTED DRAWING: Figure 1 【課題】 潤滑機構における油路の数を増加させることなく、簡易な構造でもって潤滑油を冷却する。【解決手段】 モータ部Ａと、複数の歯車３０〜３３からなる平行軸歯車減速機３９で構成された減速機部Ｂと、車輪用軸受部Ｃと、回転ポンプ５６によりモータ部Ａおよび減速機部Ｂに潤滑油を供給する潤滑機構とを備え、モータ部Ａおよび減速機部Ｂをケーシング２２に収容したインホイールモータ駆動装置２１であって、回転ポンプ５６からモータ部Ａへ潤滑油を圧送する油路５７の一部に、ケーシング２２の外部に露呈する外部油路７３を設け、その外部油路７３は、水による気化熱でもって潤滑油を冷却する保水材で被覆されている。【選択図】 図１