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US 10,989,288 B1Granted
Axle assembly having a multi-speed countershaft transmission
AssigneeArvinMeritor Technology, LLC
InventorsChetankumar Ghatti, Rodrigo Soffner, Christopher Keeney, Mark Smith
Life of this patent
Estimating the term…
Abstract
An axle assembly having a countershaft transmission. A rotor shaft may extend through a drive pinion and may operatively connect an electric motor to a countershaft transmission. The countershaft transmission may have a first countershaft subassembly that is rotatable about a first countershaft axis and a second countershaft subassembly that is rotatable about a second countershaft axis.
Claims20
An axle assembly comprising:
- an electric motor having a rotor that is rotatable about a first axis;
- a drive pinion that is rotatable about the first axis;
- a rotor shaft that extends through the drive pinion and is operatively connected to the rotor;
- a countershaft transmission that operatively connects the rotor shaft to the drive pinion, the countershaft transmission having a first countershaft subassembly that is rotatable about a first countershaft axis and a second countershaft subassembly that is rotatable about a second countershaft axis;
- and
- a differential assembly that is rotatable about a second axis, wherein the differential assembly is positioned between the electric motor and the countershaft transmission such that the electric motor and the countershaft transmission are positioned on opposite sides of the second axis.
3 more elements
An axle assembly comprising:
- an electric motor having a rotor that is rotatable about a first axis;
- a drive pinion that is rotatable about the first axis;
- a rotor shaft that extends through the drive pinion and is operatively connected to the rotor;
- a countershaft transmission that operatively connects the rotor shaft to the drive pinion, the countershaft transmission having a first countershaft subassembly that is rotatable about a first countershaft axis and a second countershaft subassembly that is rotatable about a second countershaft axis, wherein the first countershaft subassembly includes a first countershaft and a first countershaft gear that are rotatable about the first countershaft axis, the second countershaft subassembly includes a second countershaft and a first countershaft gear that are rotatable about the second countershaft axis;
- a first gear that is operatively connected to the rotor shaft and that meshes with the first countershaft gear of the first countershaft subassembly and the first countershaft gear of the second countershaft subassembly;
- and
- a second gear through which the drive pinion and the rotor shaft extend, wherein the second gear is selectively couplable to the drive pinion and the second gear is positioned along the first axis between the first gear and the electric motor.
4 more elements
An axle assembly comprising:
- an electric motor having a rotor that is rotatable about a first axis;
- a drive pinion that is rotatable about the first axis;
- a rotor shaft that extends through the drive pinion and is operatively connected to the rotor;
- a countershaft transmission that operatively connects the rotor shaft to the drive pinion, the countershaft transmission having a first countershaft subassembly that is rotatable about a first countershaft axis and a second countershaft subassembly that is rotatable about a second countershaft axis, wherein the first countershaft subassembly includes a first countershaft and a first countershaft gear that are rotatable about the first countershaft axis, the second countershaft subassembly includes a second countershaft and a first countershaft gear that are rotatable about the second countershaft axis;
- a first gear that is operatively connected to the rotor shaft and that meshes with the first countershaft gear of the first countershaft subassembly and the first countershaft gear of the second countershaft subassembly;
- a second gear through which the drive pinion and the rotor shaft extend;
- and
- a third gear through which the drive pinion and the rotor shaft extend, wherein the third gear is positioned closer to the electric motor than the second gear and the second gear is positioned along the first axis between the first gear and the third gear.
5 more elements
An axle assembly comprising:
- an electric motor having a rotor that is rotatable about a first axis;
- a drive pinion that is rotatable about the first axis;
- a rotor shaft that extends through the drive pinion and is operatively connected to the rotor;
- a countershaft transmission that operatively connects the rotor shaft to the drive pinion, the countershaft transmission having a first countershaft subassembly that is rotatable about a first countershaft axis and a second countershaft subassembly that is rotatable about a second countershaft axis, wherein the first countershaft subassembly includes a first countershaft and a first countershaft gear that are rotatable about the first countershaft axis, the second countershaft subassembly includes a second countershaft and a first countershaft gear that are rotatable about the second countershaft axis;
- a first gear that is operatively connected to the rotor shaft and that meshes with the first countershaft gear of the first countershaft subassembly and the first countershaft gear of the second countershaft subassembly;
- a second gear through which the drive pinion and the rotor shaft extend;
- a third gear through which the drive pinion and the rotor shaft extend;
- a first clutch that selectively couples the first gear to the drive pinion;
- and
- a second clutch that selectively couples the third gear to the drive pinion, wherein torque is transmitted between the electric motor and the drive pinion via the third gear when the first clutch does not couple the first gear to the drive pinion and the second clutch couples the third gear to the drive pinion such that the third gear rotates about the first axis with the drive pinion.
7 more elements
Dependencies are inferred from the claim text.