PROBLEM TO BE SOLVED: To provide an in-wheel motor drive unit which can supply a lubricant to a gear of a reduction gear even in reverse traveling.SOLUTION: An in-wheel motor drive unit 21 comprises: a motor part A which generates a drive force; a reduction gear B which reduces the rotation of the motor part A, and outputs it; and a wheel hub C which transmits outputs from the reduction gear B to drive wheels. The motor part A and the reduction gear B are accommodated in a casing 22, a lubricant is sucked from a lubricant sump at a lower part of the casing 22 by the rotation of an inner rotor, and an oil pump is arranged which supplies the lubricant to the motor part A and the reduction gear B, and performs the lubrication and cooling of the motor part A and the reduction gear B. Oil grooves which suck the lubricants and supply the lubricants to gears in the reduction gear when the gears of the reduction gear rotate to a direction in which a pump drive shaft of the oil pump is inverted are formed at side faces of the gears of the reduction gear.SELECTED DRAWING: Figure 1
【課題】バック走行時でも潤滑油を減速機の歯車に供給できるインホイールモータ駆動装置を提供する。【解決手段】駆動力を発生させるモータ部Aと、モータ部Aの回転を減速して出力する減速機Bと、減速機Bからの出力を駆動輪に伝える車輪ハブCとを備え、モータ部Aおよび減速機Bがケーシング22内に収容され、インナーロータの回転によりケーシング22の下方の潤滑油溜りから潤滑油を吸引し、潤滑油をモータ部Aと減速機Bに供給してモータ部Aと減速機Bの潤滑と冷却を行うオイルポンプを備えたインホイールモータ駆動装置21において、前記減速機の歯車の側面に、オイルポンプのポンプ駆動軸を逆転させる方向に減速機の歯車が回転した際に、潤滑油を吸い上げて潤滑油を減速機内の歯車に供給する油溝を形成したものである。【選択図】図1
LUBRICATION DEVICE OF IN-WHEEL MOTOR DRIVE UNIT
インホイールモータ駆動装置の潤滑装置
2016-05-09
Patent
Electronic Resource
Japanese
LUBRICATION OIL SUPPLY STRUCTURE AND IN-WHEEL MOTOR DRIVE DEVICE
European Patent Office | 2019
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