US 11,293,534 B2 · Electric drive module with transmission having parallel twin gear pairs sharing load to a final drive gear

Abstract

An electric drive module that includes an electric motor, a differential assembly, and a transmission that transmits rotary power between the electric motor and the differential assembly. The transmission has first and second reductions. The first reduction has a drive gear, which is rotatable about a first axis, and a pair of first reduction gears that are each meshingly engaged to the drive gear rotatable about a respective second axis. The second axes are spaced apart from one another and are parallel to the first axis. The second reduction has a driven gear and a pair of second reduction gears. The driven gear is rotatable about a third axis that is parallel to the first axis. Each of the second reduction gears is being meshingly engaged to the driven gear and non-rotatably coupled to an associated one of the first reduction gears.

Claims39

Dependent claims

An electric drive module having:

an electric motor having a motor output shaft;
a driven gear;
a differential assembly driven by the driven gear;
and
a transmission transmitting rotary power between the electric motor and the driven gear, the transmission including a drive gear, a pair of first reduction gears, and a pair of second reduction gears, the drive gear being coupled to the motor output shaft for rotation therewith about a first axis, each of the first reduction gears being meshingly engaged to the drive gear and being rotatable about a respective second axis, wherein the second axes are spaced apart from one another and are parallel to the first axis, each of the second reduction gears being meshingly engaged to the driven gear and non-rotatably coupled to an associated one of the first reduction gears;
wherein the driven gear is rotatable about a third axis.

3 more elements

An electric drive unit comprising:

a housing;
a motor coupled to the housing, the motor having a motor output shaft that is rotatable about a motor axis;
a transmission received in the housing and having an input pinion and a pair of first compound gears, the input pinion being coupled to the motor output shaft for rotation therewith, each of the first compound gears being rotatable about a first intermediate axis that is parallel to the motor axis, each of the first compound gears having a first gear, which is meshingly engaged with the input pinion, and a second gear that is coupled to the first gear for rotation therewith;
an output gear received in the housing and rotatable about an output axis, the output gear being driven by the transmission;
a differential assembly having a differential input member and a pair of differential output members, the differential input member being coupled to the output gear for rotation therewith about the output axis, each of the differential output members being rotatable relative to the differential input member about the output axis;
wherein the output axis is parallel to the first intermediate axis.

3 more elements

An electric drive unit comprising:

a housing;
a motor coupled to the housing, the motor having a motor output shaft that is rotatable about a motor axis;
a transmission received in the housing and having an input pinion and a pair of first compound gears, the input pinion being coupled to the motor output shaft for rotation therewith, each of the first compound gears being rotatable about a first intermediate axis that is parallel to the motor axis, each of the first compound gears having a first gear, which is meshingly engaged with the input pinion, and a second gear that is coupled to the first gear for rotation therewith;
an output gear received in the housing and rotatable about an output axis, the output gear being driven by the transmission;
a differential assembly having a differential input member and a pair of differential output members, the differential input member being coupled to the output gear for rotation therewith about the output axis, each of the differential output members being rotatable relative to the differential input member about the output axis
wherein the second gears are meshingly engaged with the output gear.

3 more elements

Dependencies are inferred from the claim text.

Electric drive module with transmission having parallel twin gear pairs sharing load to a final drive gear

Life of this patent

Electric drive module with transmission having parallel twin gear pairs sharing load to a final drive gear

Life of this patent

Abstract

Claims39