Multi-speed transmission in planetary design

Patent metadata

Field	Value
Publication number	US-9829074-B2
Application number	US-201414769630-A
Country	US
Kind code	B2
Filing date	Jan 22, 2014
Priority date	Feb 22, 2013
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

A multi-speed transmission in planetary design for a vehicle includes a housing, a first shaft is provided as a drive (An), and a second shaft provided as an output arranged axially parallel to the drive. Three planetary gear sets and additional shafts along with six shifting elements are provided. Machine elements (ST 1 , ST 2 ) are provided for transfer of torque between the drive (An) and the output (Ab). The first shaft ( 1 ) is connectable to the ring gear of the third planetary gear set, to the sun gear of the first planetary gear set, to the sun gear of the third planetary gear set, to the planetary gear carrier of the first planetary gear set and to the first machine element. The second shaft is connected or connectable to the first machine element and to the second machine element.

First claim

The invention claimed is:

1. A multi-speed transmission in planetary design for a vehicle, comprising:
a transmission housing ( 11 );
a first shaft ( 1 ) provided as a drive (An), and a second shaft ( 2 ) provided as an output (Ab) arranged axially parallel to the drive (An);
three planetary gear sets (RS 1 , RS 2 , RS 3 );
third, fourth, fifth, sixth, seventh, eighth and ninth shafts ( 3 , 4 , 5 , 6 , 7 , 8 , 9 );
six shifting elements (K 1 , K 2 , K 3 , K 4 , B 1 , B 2 ) through which actuation thereof several gears are realized;
a first machine element (ST 1 ) and a second machine element (ST 2 ) configured to transfer torque between the drive (An) and the output (Ab), the first and second machine elements separate from the three planetary gear sets and the first through ninth shafts;
the first shaft ( 1 ) connectable, as the drive (An), to a ring gear (HR 3 ) of the third planetary gear set (RS 3 ), to a sun gear (SR 1 ) of the first planetary gear set (RS 1 ), to a sun gear (SR 3 ) of the third planetary gear set (RS 3 ), to a planetary gear carrier (PT 1 ) of the first planetary gear set (RS 1 ), and to the first machine element (ST 1 );
the second shaft ( 2 ), as the output (Ab), connected to or connectable through one of the six shifting elements to the first machine element (ST 1 ) and to the second machine element (ST 2 ); and
wherein the first machine element and the second machine element are one of a spur gear stage, chain, or belt.

2. The multi-speed transmission according to claim 1 , wherein the first shaft ( 1 ) is connectable through the first shifting element (K 1 ) designed as a clutch and through the third shaft ( 3 ) to the ring gear (HR 3 ) of the third planetary gear set (RS 3 ), and the ring gear (HR 3 ) of the third planetary gear set (RS 3 ) is connectable through the third shaft ( 3 ) and the sixth shifting element (B 2 ) designed as a brake to the housing ( 11 ).

3. The multi-speed transmission according to claim 1 , wherein the first shaft ( 1 ) is connectable through the second shifting element (K 2 ) designed as a clutch and through the fourth shaft ( 4 ) both to a sun gear (SR 1 ) of the first planetary gear set (RS 1 ) and to the sun gear (SR 3 ) of the third planetary gear set.

4. The multi-speed transmission according to claim 1 , wherein the first machine element (ST 1 ) is provided as a first spur gear stage (ST 1 ) and the second machine element is provided as a second spur gear stage (ST 2 ).

5. The multi-speed transmission according to claim 4 , wherein the first shaft ( 1 ) is connectable through the third shifting element (K 3 ) designed as a clutch and through the fifth shaft ( 5 ) both to the first spur gear stage (ST 1 ) and a planetary gear carrier (PT 1 ) of the first planetary gear set (RS 1 ).

6. The multi-speed transmission according to claim 4 , wherein the second shaft ( 2 ) is connected to a fixed gear ( 15 ) of the second spur gear stage (ST 2 ), and the second shaft ( 2 ) is connectable through the fourth shifting element (K 4 ) designed as a clutch and through the ninth shaft ( 9 ) to an idler gear ( 13 ) of the first spur gear stage (ST 1 ).

7. The multi-speed transmission according to claim 4 , wherein the second shaft ( 2 ) is connected to a fixed gear ( 13 A) of the first spur gear stage (ST 1 ) and to a fixed gear ( 15 ) of the second spur gear stage (ST 2 ), and an idler gear ( 12 A) of the first spur gear stage (ST 1 ) is connectable through the ninth shaft ( 9 ), through the fourth shifting element (K 4 ) designed as a clutch, through the fifth shaft ( 5 ), and through the third shifting element (K 3 ) designed as a clutch, to the first shaft ( 1 ).

8. The multi-speed transmission according to claim 4 , wherein the second spur gear stage (ST 2 ) is connected through the sixth shaft ( 6 ) to a ring gear (HR 2 ) of the second planetary gear set (RS 2 ).

9. The multi-speed transmission according to claim 1 , wherein the shifting elements (K 1 , K 2 , K 3 , K 4 , B 1 , B 2 ) comprise frictional-locking or positive-locking shifting elements.

10. The multi-speed transmission according to claim 1 , wherein the transmission comprises nine shiftable forward gears (G 1 to G 9 ) and at least one shiftable reverse gear (R).

11. A multi-speed transmission in planetary design for a vehicle, comprising:
a transmission housing ( 11 );
a first shaft ( 1 ) provided as a drive (An), and a second shaft ( 2 ) provided as an output (Ab) arranged axially parallel to the drive (An);
three planetary gear sets (RS 1 , RS 2 , RS 3 );
third, fourth, fifth, sixth, seventh, eighth and ninth shafts ( 3 , 4 , 5 , 6 , 7 , 8 , 9 );
six shifting elements (K 1 , K 2 , K 3 , K 4 , B 1 , B 2 ) through which actuation thereof several gears are realized;
a first machine element (ST 1 ) and a second machine element (ST 2 ) configured to transfer torque between the drive (An) and the output (Ab), the first and second machine elements separate from the three planetary gear sets and the first through ninth shafts;
the first shaft ( 1 ) connectable, as the drive (An), to a ring gear (HR 3 ) of the third planetary gear set (RS 3 ), to a sun gear (SR 1 ) of the first planetary gear set (RS 1 ), to a sun gear (SR 3 ) of the third planetary gear set (RS 3 ), to a planetary gear carrier (PT 1 ) of the first planetary gear set (RS 1 ), and to the first machine element (ST 1 );
the second shaft ( 2 ), as the output (Ab), connected to or connectable through one of the six shifting elements to the first machine element (ST 1 ) and to the second machine element (ST 2 ); and
wherein a ring gear (HR 1 ) of the first planetary gear set (RS 1 ) is connected through the seventh shaft ( 7 ) to a planetary gear carrier (PT 2 ) of the second planetary gear set (RS 2 ).

12. A multi-speed transmission in planetary design for a vehicle, comprising:
a transmission housing ( 11 );
a first shaft ( 1 ) provided as a drive (An), and a second shaft ( 2 ) provided as an output (Ab) arranged axially parallel to the drive (An);
three planetary gear sets (RS 1 , RS 2 , RS 3 );
third, fourth, fifth, sixth, seventh, eighth and ninth shafts ( 3 , 4 , 5 , 6 , 7 , 8 , 9 );
six shifting elements (K 1 , K 2 , K 3 , K 4 , B 1 , B 2 ) through which actuation thereof several gears are realize;
a first machine element (ST 1 ) and a second machine element (ST 2 ) configured to transfer torque between the drive (An) and the output (Ab), the first and second machine elements separate from the three planetary gear sets and the first through ninth shafts;
the first shaft ( 1 ) connectable, as the drive (An), to a ring gear (HR 3 ) of the third planetary gear set (RS 3 ), to a sun gear (SR 1 ) of the first planetary ear set (RS 1 ), to a sun ear (SR 3 ) of the third planetary gear set (RS 3 ), to a planetary gear carrier (PT 1 ) of the first planetary gear set (RS 1 ), and to the first machine element (ST 1 );
the second shaft ( 2 ), as the output (Ab), connected to or connectable through one of the six shifting elements to the first machine element (ST 1 ) and to the second machine element (ST 2 ); and
wherein a sun gear (SR 2 ) of the second planetary gear set (RS 2 ) is connected through the eighth shaft ( 8 ) to a planetary gear carrier (PT 3 ) of the third planetary gear set (RS 3 ).

13. A multi-speed transmission in planetary design for a vehicle, comprising:
a transmission housing ( 11 );
a first shaft ( 1 ) provided as a drive (An), and a second shaft ( 2 ) provided as an output (Ab) arranged axially parallel to the drive (An);
three planetary gear sets (RS 1 , RS 2 , RS 3 );
third, fourth, fifth, sixth, seventh, eighth and nint

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Beck Stefan
• Sibla Christian
• Rieger Wolfgang

Classifications

• F16H2200/2046

  with six engaging means · CPC title

• F16H3/66 Primary

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

• F16H2200/201

  with three sets of orbital gears · CPC title

• F16H2003/445

  without permanent connection between the input and the set of orbital gears · CPC title

• F16H2200/0065

  the gear ratios comprising nine forward speeds · CPC title