Coupling Assembly and Transmission Assembly

Patent metadata

Field	Value
Publication number	US-2017191551-A1
Application number	US-201715464416-A
Country	US
Kind code	A1
Filing date	Mar 21, 2017
Priority date	Nov 26, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

A coupling assembly is provided for a transmission assembly, in particular for a multiple spider planetary gear transmission, wherein the transmission assembly has two speed-change gear units coupled to each other. A first shaft and a second shaft are coupleable with one of the speed-change gear units, wherein by blocking of one of the shafts two shifting stages of the transmission assembly are shiftable. A third shaft is provided as well as a first shifting element and a second shifting element, each of which couples the first shaft and the second shaft with the third shaft. A third shifting element is provided which can brake and/or block the third shaft.

First claim

What is claimed is:

1 . A coupling assembly for a transmission assembly having two speed-change gear mechanisms coupled to one another, the coupling assembly comprising:
a first shaft and a second shaft coupleable to one of the two speed-change gear mechanisms, wherein two shift stages of the transmission assembly are shiftable by blocking of, in each case, one of the first and second shafts; a third shaft; a first shifting element and a second shifting element which, in each case, couple the first shaft and the second shaft to the third shaft; and a third shifting element that can brake and/or block the third shaft.

2 . The coupling assembly according to claim 1 , wherein
the first shifting element, the second shifting element and/or the third shifting element are, in each case, formed by a brake.

3 . The coupling assembly according to claim 1 , wherein
the first shifting element, the second shifting element and/or the third shifting element are, in each case, formed by a clutch.

4 . The coupling assembly according to claim 3 , wherein the clutch is a multiple disk clutch.

5 . The coupling assembly according to claim 1 , further comprising one bearing respectively provided for each of the first, second and third shafts.

6 . A coupling assembly according to claim 1 , wherein the coupling assembly is configured for a multiple spider planetary gear mechanism transmission assembly.

7 . A transmission assembly, comprising:
an input shaft; first and second speed-change gear mechanisms coupled to one another; a coupling assembly comprising:
a first shaft and a second shaft coupleable to one of the two speed-change gear mechanisms, wherein two shift stages of the transmission assembly are shiftable by blocking of, in each case, one of the first and second shafts;
a third shaft;
a first shifting element and a second shifting element which, in each case, couple the first shaft and the second shaft to the third shaft; and
a third shifting element that can brake and/or block the third shaft, wherein
the first shaft and the second shaft are coupled to the first speed-change mechanism and/or the second speed-change mechanism, and three transmission ratios between the input shaft and the output shaft are selectable via selective shifting of the first, second, and third shifting elements.

8 . The transmission assembly according to claim 7 , wherein
the two speed-change gear mechanisms are planetary gear mechanisms which, in each case, comprise a sun gear, a plurality of planetary gears mounted on a spider, and an internal gear.

9 . The transmission assembly according to claim 8 , wherein
the spider of the first speed-change gear mechanism is coupled to the internal gear of the second speed-change gear mechanism, and the spider of the second speed-change gear mechanism is coupled to the internal gear of the first speed-change gear mechanism.

10 . The transmission assembly according to claim 9 , wherein
the first shaft of the coupling assembly is coupled to the spider of the second speed-change gear mechanism, and the second shaft of the coupling assembly is coupled to the sun gear of the second speed-change gear mechanism.

11 . The transmission assembly according to claim 8 , wherein
the first shaft of the coupling assembly is coupled to the spider of the second speed-change gear mechanism, and the second shaft of the coupling assembly is coupled to the sun gear of the second speed-change gear mechanism.

12 . The transmission assembly according to claim 8 , wherein
the input shaft is coupled to the sun gear of the first speed-change gear mechanism, and the output shaft is coupled to the spider of the first speed-change gear mechanism.

13 . The transmission assembly according to claim 9 , wherein
the input shaft is coupled to the sun gear of the first speed-change gear mechanism, and the output shaft is coupled to the spider of the first speed-change gear mechanism.

14 . The transmission assembly according to claim 10 , wherein
the input shaft is coupled to the sun gear of the first speed-change gear mechanism, and the output shaft is coupled to the spider of the first speed-change gear mechanism.

15 . The transmission assembly according to claim 7 , wherein the transmission assembly is configured for a drive device of a vehicle.

16 . The transmission assembly according to claim 15 , wherein the drive device is an electric motor.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Staake Michael
• Hombauer Michael
• Brk Nikola

Classifications

• F16H2200/2038

  with three engaging means · CPC title

• F16H2200/2007

  with two sets of orbital gears · CPC title

• F16H3/66 Primary

  composed of a number of gear trains without drive passing from one train to another · CPC title

• B60K1/00

  Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) · CPC title

• F16H2200/0034

  the gear ratios comprising two forward speeds · CPC title