초록 ▼

A differential assembly includes an electrically operated input device and a first planetary assembly in driving engagement with the input device. The first planetary assembly is drivingly connected to a first output assembly. A second planetary assembly is in driving engagement with the first plane

A differential assembly includes an electrically operated input device and a first planetary assembly in driving engagement with the input device. The first planetary assembly is drivingly connected to a first output assembly. A second planetary assembly is in driving engagement with the first planetary assembly and the second planetary assembly is drivingly connected to a second output assembly. The first planetary assembly co-acts with the second planetary assembly to provide substantially the same torque to the first and second output assemblies and the first and second planetary assemblies include axes of rotation substantially aligned with an axis of rotation of the input device.

대표청구항 ▼

What is claimed is: 1. A differential assembly comprising; an electrically operated input device; a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly; a second planetary assembly in direct driving eng

What is claimed is: 1. A differential assembly comprising; an electrically operated input device; a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly; a second planetary assembly in direct driving engagement with said first planetary assembly, said second planetary assembly directly driving a second output assembly; wherein said input device, said first planetary assembly, and said second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies, wherein said one of said first and second planetary assemblies includes a reduction ratio value one greater than the other of said first and said second planetary assemblies. 2. A differential assembly comprising; an electrically operated input device; a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly; a second planetary assembly in direct driving engagement with said first planetary assembly, said second planetary assembly directly driving a second output assembly; at least one brake assembly operable to reduce relative rotation of at least one of said first or said second output assemblies in response to a substantial rotational speed difference between said first and said second output assemblies, wherein said input device, said first planetary assembly, and said second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies. 3. The differential assembly of claim 2, wherein a first brake assembly is disposed between said first output assembly and said first planetary assembly and a second brake assembly is disposed between said second output assembly and said second planetary assembly, said first and said second brake assemblies being operable to reduce relative rotation of at least one of said first or said second output assemblies. 4. A differential assembly comprising: an electrically operated input device; a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly; a second planetary assembly in direct driving engagement with said first planetary assembly, said second planetary assembly directly driving a second output assembly; wherein said input device, said first planetary assembly, and said second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies, wherein at least one of said first output assembly or said second output assembly includes a final drive assembly. 5. A differential assembly comprising: an electrically operated input device; a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly; a second planetary assembly in direct driving engagement with said first planetary assembly, said second planetary assembly directly driving a second output assembly; wherein said input device, said first planetary assembly, and said second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies, wherein at least one of said first output assembly or said second output assembly includes a continuous track assembly. 6. A differential assembly comprising: an electrically operated input device; a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly; a second planetary assembly in direct driving engagement with said first planetary assembly, said second planetary assembly directly driving a second output assembly; wherein said input device, said first planetary assembly, and said second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies, wherein each of the first and second planetary assemblies include components comprising a sun gear, a planet gear set, a ring gear, and a carrier, wherein a hollow drive member is connected to the input device and drives the first planetary assembly, wherein the hollow drive member drives the ring gear of the first planetary assembly. 7. A differential assembly comprising: an electrically operated input device; a first planetary assembly in direct driving engagement with said input device, said first planetary assembly directly driving a first output assembly; a second planetary assembly in direct driving engagement with said first planetary assembly, said second planetary assembly directly driving a second output assembly; wherein said input device, said first planetary assembly, and said second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies, wherein each of the first and second planetary assemblies include components comprising a sun gear, a planet gear set, a ring gear, and a carrier, wherein a drive member is connected to the input device, the drive member driving the ring gear of the first planetary assembly which in turn drives a reaction member connected to the sun gears of the first and second planetary assemblies. 8. A differential assembly, comprising: an electrically operated input device; no more than two planetary assemblies; the first planetary assembly in driving engagement with the input device, the first planetary assembly being drivingly connected to a first output assembly; a second planetary assembly in driving engagement with the first planetary assembly such that an output of the first planetary assembly delivers an input to the second planetary assembly, the second planetary assembly being drivingly connected to a second output assembly; wherein the input device, the first planetary assembly, and the second planetary assembly are drivingly connected in series, one after the other, to provide substantially the same torque to said first and second output assemblies. 9. The differential assembly of claim 8, wherein the input device is disposed between the first and the second planetary assemblies. 10. The differential assembly of claim 9, wherein the first and the second planetary assemblies are in driving engagement through a reaction member. 11. The differential assembly of claim 10, wherein the reaction member is extended through the input device. 12. The differential assembly of claim 8, wherein each of the first and second planetary assemblies include components comprising a sun gear, a planet gear set, a ring gear, and a carrier. 13. The differential assembly of claim 12, wherein the sun gears of the first and second planetary assemblies are in driving engagement through a reaction member. 14. The differential assembly of claim 12, wherein different components of the first and second planetary assemblies drive the first and second output assemblies. 15. The differential assembly of claim 12, wherein the carrier of the first planetary assembly drives the first output assembly and the ring gear of the second planetary assembly drives the second output assembly. 16. The differential assembly of claim 12, wherein the carrier of the second planetary assembly is grounded through attachment to a housing of the differential assembly. 17. The differential assembly of claim 12, wherein a drive member is connected to the input device, the drive member driving the ring gear of the first planetary assembly which in turn drives a reaction member connected to the sun gears of the first and second planetary assemblies. 18. The differential assembly of claim 8, wherein a hollow drive member is connected to the input device and drives the first planetary assembly. 19. The differential assembly of claim 18, wherein the hollow drive member drives a ring gear of the first planetary assembly. 20. The differential assembly of claim 8, wherein the first and the second planetary assemblies include axes of rotation substantially aligned with an axis of rotation of the input device. 21. The differential assembly of claim 20, wherein the first and second planetary assemblies are in driving engagement through a reaction member and the reaction member is extended through the input device. 22. The differential assembly of claim 8, wherein one of the first and second planetary assemblies includes a reduction ratio value greater than the other of the first and the second planetary assemblies. 23. The differential assembly of claim 8, wherein at least one of an axis of rotation of the first planetary assembly or an axis of rotation of the second planetary assembly is coincident with an axis of rotation of the input device.