| 摘要 |
<p>An object of the present invention is to provide an in-wheel motor driving device which has a deceased axial dimension and includes aluminum alloy housings having a minimum wall thickness for reduced weight while retaining good assemblability. An in-wheel motor driving device includes: a motor section A which has an output shaft 24a; a wheel hub bearing section C; and a speed reducer section B which connects the output shaft 24a of the motor section A and the wheel hub bearing section C coaxially with each other. A housing outer circumferential portion of the motor section A and a housing outer circumferential portion of the speed reducer section are integral with each other, being provided by one, outer circumferential member 22a. An outboard-side end member 22c is fixed to an outboard-side end of the outer circumferential member 22a by means of bolts 61, and the wheel hub bearing section C has its fixing ring 33 fixed to the outboard-side end member 22c.</p> |
