Patent ID: 9145961
Filing Date: 2015-09-29
Classification: B60K,B60L,B60Y,F16H,Y02T,Y10T

Abstract:
1. A vehicle drive system including: a motor that drives a wheel; a speed changer that is provided on a power transmission line between the motor and the wheel; and a case that accommodates the motor and the speed changer, wherein the motor includes a first and second motors that are disposed left and right respectively in a width direction of a vehicle, wherein the speed changer includes a first and second speed changers that are disposed left and right respectively in the width direction of the vehicle, wherein the case is a common case commonly containing the first motor, the first speed changer, the second motor and the second speed changer, wherein the first and second motors and the first and second speed changers are disposed coaxially inside the common case so as to define a common axis, wherein the first motor and the first speed changer are disposed sequentially in this order from an outer side in the width direction of the vehicle, and the second motor and the second speed changer are disposed sequentially in this order from an outer side in the width direction of the vehicle such that the first and second speed changers are disposed between the first and second motors in the width direction of the vehicle inside the common case, wherein at least part of a radially outer edge of a rotational element of the first speed changer or a radially outer edge of a rotational element of the second speed changer is formed smaller in a radial distance from the common axis than each of a radially outermost edge portion of the first motor and a radially outermost edge portion of the second motor, wherein an offset space that is recessed further radially toward the common axis than a reference line that is defined by connecting the radially outermost edge portion of the first motor with the radially outermost edge portion of the second motor as viewed in a direction perpendicular to the common axis is provided radially outwards of the rotational element of the first speed changer or the rotational element of the second speed changer, and wherein at least part of a volumetric capacity chamber that is partitioned from an interior of the common case and that communicates with the interior of the common case is disposed within the offset space.