| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an in-wheel motor drive unit excellent in durability and credibility by configuration allowing a lubricating oil to be fed stably to a deceleration section, especially to a rolling bearing supporting a curved plate. <P>SOLUTION: This in-wheel motor driving unit 21 is provided with a motor section A, the deceleration section B constructed of a cycloid reduction gear, a wheel hub bearing section C, and a deceleration section lubricating mechanism feeding the lubricating oil to the deceleration section B. The deceleration section lubricating mechanism is provided with a lubricating oil passage 25c arranged inside a motor side rotating member 25, and a lubricating oil feeding passage 29e feeding the lubricating oil to the rolling bearing 41 from an end in an axial direction while being arranged in a counter weight 29 and communicated with the lubricating oil passage 25c. <P>COPYRIGHT: (C)2009,JPO&INPIT |
