| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an in-wheel motor driving device for reducing weight, while restraining a temperature rise in a motor part by an air-cooled system. <P>SOLUTION: This air-cooled in-wheel motor driving device 21 has a lubricating oil circuit for lubricating a deceleration part B when lubricating oil delivered from a lubricating oil pump 51 flows by circulating inside oil passages 54, 55 and 56 arranged in mutually connected these casings 22, a motor rotary shaft oil passage 57, a deceleration part input shaft oil passage 58 and the deceleration part B, and cooling these motor part A and deceleration part B by the lubricating oil cooled by an outer peripheral fin 22f by flowing in the oil passages 54, 55 and 56 arranged in the casings. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
