IN-WHEEL MOTOR DRIVE UNIT

• Main Authors: UOZUMI TOMOHISA, YUKISHIMA MAKOTO, SUZUKI MINORU
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2015
• 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

PROBLEM TO BE SOLVED: To provide an in-wheel drive unit which is high in quality and excellent in durability by improving lubrication performance in a reduction gear part.SOLUTION: An in-wheel drive unit 21 comprises a motor part A, a reduction gear part B, a wheel bearing part C, a casing 22, and a lubrication mechanism which supplies lubricants to the motor part A and the reduction gear part B. A rotating shaft 24 of the motor part A rotationally drives a reduction gear input shaft 25 having eccentric parts 25a, 25b, the reduction gear part B decelerates the rotation of the reduction gear input shaft 25 and transmits the rotation to a reduction gear output shaft 28, and the wheel bearing part C is connected to the reduction gear output shaft 28. The lubrication mechanism comprises an oil passage 22b of the reduction gear part B for discharging the lubricant in the reduction gear part B to the motor part A, and an oil passage 22f of the motor part A for discharging the lubricant in the motor part A to an oil tank 22d together with the lubricant from the reduction gear part B. A partitioning part 80 which introduces the lubricant from the reduction gear part B to the oil passage 22f is arranged at the motor part A. 【課題】 減速機部での潤滑性能を改善することにより、高品質で耐久性に優れたインホイールモータ駆動装置を提供する。【解決手段】 モータ部Ａと、減速機部Ｂと、車輪用軸受部Ｃと、ケーシング２２と、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のモータ回転軸２４が偏心部２５ａ，２５ｂを有する減速機入力軸２５を回転駆動し、減速機部Ｂが減速機入力軸２５の回転を減速して減速機出力軸２８に伝達し、車輪用軸受部Ｃが減速機出力軸２８に連結されたインホイールモータ駆動装置２１であって、潤滑機構は、減速機部Ｂの内部の潤滑油をモータ部Ａに排出する減速機部Ｂの油路２２ｂと、モータ部Ａの内部の潤滑油を減速機部Ｂからの潤滑油と共に油タンク２２ｄに排出するモータ部Ａの油路２２ｆとを備え、減速機部Ｂからの潤滑油をモータ部Ａの油路２２ｆに誘導する仕切板８０をモータ部Ａに設ける。【選択図】 図１