Planetary gearing

Patent metadata

Field	Value
Publication number	US-10240670-B2
Application number	US-201715492557-A
Country	US
Kind code	B2
Filing date	Apr 20, 2017
Priority date	Apr 21, 2016
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A planetary transmission includes a planetary gear set (1), another planetary gear set (2), a fluid line (3) through which fluid is flowable to the planetary gear set (1) and to the other planetary gear set (2), and a fluid collecting device (4) which is in fluid communication with the fluid line (3). The fluid collecting device (4) is connected in a rotationally fixed manner to the planetary gear set (1). The fluid collecting device (4) is configured for dividing the fluid from the fluid line (3) which has flowed into the fluid collecting device (4) into a fluid part which is flowable to the planetary gear set (1) and another fluid part which is flowable to the other planetary gear set (2).

First claim

The invention claimed is:

1. A planetary transmission, comprising:
a planetary gear set ( 1 );
another planetary gear set ( 2 );
a fluid line ( 3 ) through which fluid is flowable to the planetary gear set ( 1 ) and to the other planetary gear set ( 2 ); and
a fluid collecting device ( 4 ) which is in fluid communication with the fluid line ( 3 ), the fluid collecting device ( 4 ) connected in a rotationally fixed manner to the planetary gear set ( 1 ),
wherein the fluid collecting device ( 4 ) is configured for dividing the fluid from the fluid line ( 3 ) which has flowed into the fluid collecting device ( 4 ) into a fluid part which is flowable to the planetary gear set ( 1 ) and another fluid part which is flowable to the other planetary gear set ( 2 ) and
wherein the fluid collecting device ( 4 ) has a chamber for receiving the fluid from the fluid line ( 3 ), the chamber configured and arranged such that the fluid collecting device ( 4 ) divides the fluid from the fluid line ( 3 ) into the fluid part and the another fluid part only when the chamber is overflowing with the fluid from the fluid line ( 3 ).

2. The planetary transmission of claim 1 , wherein the fluid collecting device ( 4 ) is configured for exclusively dividing the fluid from the fluid line ( 3 ) into the fluid part which is flowable to the planetary gear set ( 1 ) and the another fluid part which is flowable to the other planetary gear set ( 2 ).

3. The planetary transmission of claim 1 , wherein the fluid collecting device ( 4 ) is connected in a rotationally fixed manner to a planetary gear pin ( 9 ) of the planetary gear set ( 1 ).

4. The planetary transmission of claim 1 , wherein the fluid collecting device ( 4 ) has at least one first outlet opening ( 7 ) and at least one second outlet opening ( 12 ), the fluid part exits from the fluid collecting device ( 4 ) through the at least one first outlet opening ( 7 ), the another fluid part exits from the fluid collecting device ( 4 ) through the at least one second outlet opening ( 12 ).

5. The planetary transmission as claimed in claim 4 , wherein:
the fluid collecting device ( 4 ) has a rear side ( 5 ), at least one projection ( 6 ) extending from the fluid collecting device ( 4 ) at the rear side ( 5 ) of the fluid collecting device ( 4 ), the projection ( 6 ) having the first outlet opening ( 7 );
the fluid collecting device ( 4 ) has a front side ( 11 ), the front side ( 11 ) of the fluid collecting device ( 4 ) having the second outlet opening ( 12 ); or
the fluid collecting device ( 4 ) has the rear side ( 5 ) and the front side ( 11 ), the at least one projection ( 6 ) extending from the fluid collecting device ( 4 ) at the rear side ( 5 ) of the fluid collecting device ( 4 ), the projection ( 6 ) having the first outlet opening ( 7 ), the front side ( 11 ) of the fluid collecting device ( 4 ) having the second outlet opening ( 12 ).

6. The planetary transmission as claimed in claim 5 , wherein:
a flow duct ( 13 ) is positioned between the front side ( 11 ) and the rear side ( 5 ) of the fluid collecting device ( 40 );
the chamber is arranged in a radial direction above one or more of the first outlet opening ( 7 ) and the second outlet opening ( 12 ); or
the flow duct ( 13 ) is positioned between the front side ( 11 ) and the rear side ( 5 ) of the fluid collecting device ( 40 ), the chamber arranged in a radial direction above one or more of the first outlet opening ( 7 ) and the second outlet opening ( 12 ).

7. The planetary transmission of claim 1 , further comprising another fluid collecting device ( 35 ), the another fluid collecting device ( 35 ) connected in a rotationally fixed manner to the other planetary gear set ( 2 ).

8. The planetary transmission of claim 7 , wherein:
the another fluid collecting device ( 35 ) is arranged in a radial direction above the fluid collecting device ( 4 );
the another fluid collecting device ( 35 ) is configured and arranged such that the another fluid collecting device ( 35 ) guides the other fluid part towards the other planetary gear set ( 2 ); or
the another fluid collecting device ( 35 ) is arranged in a radial direction above the fluid collecting device ( 4 ), the another fluid collecting device ( 35 ) configured and arranged such that the another fluid collecting device ( 35 ) guides the other fluid part towards the other planetary gear set ( 2 ).

9. The planetary transmission of claim 7 , wherein the fluid collecting device ( 4 ) extends in an axial direction from the planetary gear set ( 1 ), the another fluid collecting device ( 35 ) extending in the axial direction from the other planetary gear set ( 2 ), the fluid collecting device ( 4 ) and the another fluid collecting device ( 35 ) extending oppositely along the axial direction.

10. The planetary transmission of claim 7 , wherein:
the another fluid collecting device ( 35 ) has another chamber ( 30 ) for receiving the other fluid part;
the another fluid collecting device ( 35 ) has at least one other outlet opening ( 38 ), the other fluid part exiting the another fluid collecting device ( 35 ) through the at least one other outlet opening ( 35 ); or
the another fluid collecting device ( 35 ) has the another chamber ( 39 ) for receiving the other fluid part, the another fluid collecting device ( 35 ) having the at least one other outlet opening ( 35 ), the other fluid part exiting the another fluid collecting device ( 35 ) through the at least one other outlet opening ( 35 ).

11. The planetary transmission of claim 7 , wherein the another fluid collecting device ( 35 ) is positioned along an axial direction such that an ejection edge ( 19 ) of the fluid collecting device ( 4 ) and the another fluid collecting device ( 35 ) are disposed in one plane (E) that is perpendicular to the axial direction.

12. The planetary transmission of claim 1 , further comprising a deflector, the deflector configured for deflecting the fluid in the fluid line ( 3 ) towards the fluid collecting device ( 4 ), the deflector positioned in the fluid line ( 3 ).

13. The planetary transmission of claim 12 , wherein the deflector is positioned along an axial direction such that a deflector ejection edge ( 26 ) of the deflector and the flow duct ( 13 ) of the fluid collecting device ( 4 ) are disposed in a feed plane (Z) that is perpendicular to the axial direction.

14. A motor vehicle having the planetary transmission of claim 1 .

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Riedisser Thomas
• Brehmer Martin
• Geiger Andreas
• Führer Kim
• Schilling Carl
• Müller Thorsten

Classifications

• F16H57/0482

  Gearings with gears having orbital motion · CPC title

• F16H57/043

  within rotary parts, e.g. axial channels or radial openings in shafts · CPC title

• F16H57/0479

  Gears or bearings on planet carriers · CPC title

• F16H57/0484

  with variable gear ratio or for reversing rotary motion · CPC title

• F16H57/0427 Primary

  on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force · CPC title