Patent ID: 9180771
Filing Date: 2015-11-10
Classification: B60K,B60L,F16C,Y02T

Abstract:
1. An in-wheel motor driving device comprising: a motor section including an output shaft; a wheel hub bearing section; and a speed reducer section connecting the wheel hub bearing section coaxially with the output shaft of the motor section, wherein a housing outer circumferential portion of the motor section and a housing outer circumferential portion of the speed reducer section are integral with each other, being provided by one, outer circumferential member, wherein an outboard-side end member, which is a separate body from the outer circumferential member, is fixed to an outboard-side end of the outer circumferential member, and the wheel hub bearing section has its fixing ring connected and fixed to the outboard-side end member using fastening bolts, wherein an outer circumference of an inboard-side end of the outboard-side end member is provided with a protruding wall portion which is fitted to an inner circumference of the outboard-side end of the outer circumferential member, and wherein a seal member is disposed between the protruding wall portion and the inner circumference of the outboard-side end of the outer circumferential member in order to prevent oil leakage from inside.