To obtain an air-cooling device of an in-wheel motor drive device which inhibits resonance of a number of cooling fins provided on an outer surface of a casing and reduces sound vibration without deteriorating cooling performance.SOLUTION: In an in-wheel motor drive device 21, an air-cooling device 90, which comprises multiple cooling fins 91 arranged in parallel to airflow and is formed by fastening the multiple cooling fins 91 with a vibration control member 93 in a manner that air passages 92 are left between an outer surface of the casing 22 and the air-cooling device 90, is mounted on the outer surface of the casing 22 which houses an electric motor part A which generates driving force and a speed reducer part B which outputs rotation of the electric motor part A while reducing a speed of the rotation. A surface 93a of the vibration control member 93 located at the upstream side relative to the airflow is formed into an inclined surface inclining to the air passage 92 of the outer surface of the casing 22.SELECTED DRAWING: Figure 5
【課題】 冷却性能を低下させることなく、ケーシングの外面に設けられる多数枚の冷却フィンの共振を抑制し、音振を低減した、インホイールモータ駆動装置の空冷装置を得ることを課題とする。【解決手段】 駆動力を発生させる電動モータ部Aと、電動モータ部Aの回転を減速して出力する減速機部Bを収容するケーシング22の外面に、空気の流れに対して平行な多数枚の冷却フィン91からなり、冷却フィン91同士を、ケーシング22の外面との間に空気流路92を残して防振部材93によって締結した空冷装置90を搭載するインホイールモータ駆動装置21において、空気の流れに対して上流側の前記防振部材93の面93aを、ケーシング22の外面の空気流路92に向かう傾斜面に形成した。【選択図】図5
IN-WHEEL MOTOR DRIVE DEVICE
インホイールモータ駆動装置
2019-04-11
Patent
Electronic Resource
Japanese
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / H05K PRINTED CIRCUITS , Gedruckte Schaltungen |
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