Assembly set for transmission devices for motor vehicles

Patent metadata

Field	Value
Publication number	US-11111994-B2
Application number	US-201816641348-A
Country	US
Kind code	B2
Filing date	Aug 17, 2018
Priority date	Aug 25, 2017
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

An assembly set for transmission devices for motor vehicles. Each of the transmission devices has an input shaft which can be operatively connected to a drive device of the motor vehicle, as well as a first output shaft, and a second output shaft, and has a spur gear differential transmission designed as a planetary transmission, via which the input shaft and an intermediate shaft that is coupled or can be coupled to an electric machine arranged coaxially to the input shaft are coupled to the first output shaft and the second output shaft. The electric machine is coupled to the input shaft in a first shift position of a shift device and to the intermediate shaft in a second shift position of the shift device.

First claim

The invention claimed is:

1. An assembly set for transmission devices for motor vehicles, wherein each of the transmission devices comprise:
an input shaft which can be operatively connected to a drive device of the motor vehicle, a first output shaft, and a second output shaft, and
a spur gear differential transmission designed as a planetary transmission, whereby the input shaft and a rotatable intermediate shaft, that are coupled or can be coupled to an electric machine arranged coaxially to the input shaft, are coupled to the first output shaft and to the second output shaft,
wherein the electric machine is coupled to the input shaft when a shift device is in a first position and to the rotatable intermediate shaft when the shift device is in a second position,
wherein the electric machine of each of the transmission devices is coupled to a first shifting shaft of the shift device and to a second shifting shaft of the shift device via a transmission gearing,
wherein the transmission gearing has at least two planetary gear sets that are coupled together,
wherein the first output shaft and the second output shaft are each coupled to or can be coupled to a respective sub-axle of a wheel axle of the motor vehicle with transmission ratios which differ among various transmission devices,
wherein the two planetary gear sets for at least one of the transmission ratios has the same stationary gear transmission ratio in terms of magnitude.

2. The assembly set according to claim 1 , wherein each of the two planetary gear sets has a sun gear, a planetary gear carrier with a planetary gear rotatably mounted thereon, and a ring gear as transmission elements, and
wherein various transmission elements of the planetary gear sets are connected to one another for coupling, for at least two of the transmission ratios.

3. The assembly set according to claim 2 , wherein, for each of the transmission ratios, the planetary gear carrier of a first of the two planetary gear sets is coupled to the sun gear of a second of the two planetary gear sets and to the second shifting shaft.

4. The assembly set according to claim 2 , wherein the electric machine is connected to the transmission gearing via the sun gear of a first of the two planetary gear sets for each of the transmission ratios.

5. The assembly set according to claim 2 , wherein the ring gear of a first of the two planetary gear sets is connected to the planetary gear carrier of a second of the two planetary gear sets for a first of the transmission ratios and/or a second of the transmission ratios.

6. The assembly set according to claim 5 , wherein the first shifting shaft is coupled to the ring gear of the first planetary gear set and to the planetary gear carrier of the second planetary gear set for the first transmission ratio and/or the second transmission ratio.

7. The assembly set according to claim 5 , wherein for a third of the transmission ratios, the first shifting shaft is coupled to the planetary gear carrier of the first planetary gear set.

8. The assembly set according to claim 7 , wherein the standard transmission ratios are the same for the second transmission ratio and the third transmission ratio in terms of magnitude and that they differ in terms of magnitude for the first transmission ratio.

9. The assembly set according to claim 2 , wherein at least one of the ring gears of the two planetary gear sets is rigidly connected to a transmission housing for each of the transmission ratios.

10. The assembly set according to claim 7 , wherein the ring gear of the second planetary gear set is rigidly connected to a transmission housing for the first transmission ratio and/or the second transmission ratio, and the ring gears of both planetary gear sets are rigidly connected to the transmission housing for the third transmission ratio.

11. The assembly set according to claim 2 , wherein, for each of the transmission ratios, the sun gear of a second of the two planetary gear sets is coupled to or can be coupled directly to either the input shaft or the rotatable intermediate shaft via the shift device.

Assignees

• Audi Ag

Inventors

• Trautmann Carsten
• Meixner Christian
• Wirth Christian
• Tschullik Jürgen

Classifications

• B60K6/48 Primary

  Parallel type · CPC title

• F16H2048/364

  using electric or hydraulic motors · CPC title

• F16H48/11 Primary

  having intermeshing planet gears · CPC title

• B60Y2400/804

  Torque vectoring arrangements · CPC title

• F16H2200/2097

  comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing · CPC title