Planetary wheel for a planetary gear and planetary carrier for such a planetary wheel

Patent metadata

Field	Value
Publication number	US-11940035-B2
Application number	US-202218083070-A
Country	US
Kind code	B2
Filing date	Dec 16, 2022
Priority date	Dec 16, 2021
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

The present invention relates to a planetary wheel ( 10 ) for a planetary gear ( 14 ) with a planetary wheel bore ( 28 ) which runs coaxially or parallel to the planetary wheel axis of rotation (APR) and which at least partially runs through the planetary wheel axis ( 22 ). The invention also relates to a planetary carrier ( 44 ) for such a planetary wheel ( 10 ), comprising a carrier body ( 46 ) with a first disk-shaped body ( 48 ) which has at least one first bearing recess ( 60 ), which has at least one circumferentially extending first catching projection ( 64 ), and with a second disk-shaped body ( 50 ) having at least one second bearing recess ( 62 ), which has at least one circumferentially extending second catching projection ( 66 ).

First claim

The invention claimed is:

1. A planetary wheel ( 10 ) for a planetary gear, comprising
a wheel body ( 16 ) with a first planetary wheel end face ( 18 ) and a second planetary wheel end face ( 20 ),
a planetary wheel axle ( 22 ), which
defines a planetary wheel axis of rotation (APR) of the planetary wheel ( 10 ), and comprises
a first bearing section ( 24 ) and
a second bearing section ( 26 ), wherein
the first bearing section ( 24 ) projects beyond the first planetary wheel end face ( 18 ) and the second bearing section ( 26 ) projects beyond the second planetary wheel end face ( 20 ),

wherein at least one planetary wheel bore ( 28 ) running coaxially or parallel to the planetary wheel axis of rotation (APR) at least partially runs through the planetary wheel axle ( 22 ),
wherein the wheel body ( 16 ) comprises
a sprocket ( 30 ) having a first number (n 1 ) of teeth ( 31 ) and
a second number (n 2 ) of ribs ( 32 ), wherein
the ribs ( 32 ) run between the planetary wheel axle ( 22 ) and the sprocket ( 30 ), and

wherein
on the ribs ( 32 ), planetary wheel stop projections ( 40 ) are arranged, which project beyond the sprocket ( 30 ) along the planetary wheel axis of rotation (APR),
or
the wheel body ( 16 ) has at least one continuous planetary wheel stop projection ( 41 ) which is arranged between the ribs ( 32 ) and the sprocket ( 30 ).

2. The planetary wheel ( 10 ) according to claim 1 ,
characterized in that the planetary wheel ( 10 ) has exactly one planetary wheel bore ( 28 ) which runs through the entire planetary wheel ( 10 ).

3. The planetary wheel ( 10 ) according to claim 1 ,
characterized in that
the first bearing section ( 24 ) has a first extension (x 1 ) starting out from the first planetary wheel end face ( 18 ) and
the second bearing section ( 26 ) has a second extension (x 2 ) starting out from the second planetary wheel end face ( 20 ), wherein
the first extension (x 1 ) is different from the second extension (x 2 ).

4. The planetary wheel ( 10 ) according to claim 1 ,
characterized in that the planetary wheel axle ( 22 ) is formed by the wheel body ( 16 ).

5. The planetary wheel ( 10 ) according to claim 1 ,
characterized in that
the ribs ( 32 ) have a concave bulge ( 42 ) with
a radius (R) in a plane running through the planetary wheel axis of rotation (APR),
a first end ( 90 ) and a second end ( 92 ), and

the bulge ( 42 )
in the area of the first end ( 90 ) merges into the first bearing section ( 24 ) or into the second bearing section ( 26 ), and

in the area of the second end ( 92 ) merges into the planetary wheel stop projections ( 40 ).

6. The planetary wheel ( 10 ) according to claim 1 ,
characterized in that
the sprocket ( 30 ) has a tooth base ( 34 ) between two adjacently arranged teeth ( 31 ), and
at least one rib ( 32 ) is arranged radially aligned with one of the tooth bases ( 34 ).

7. The planetary wheel ( 10 ) according to claim 1 ,
characterized in that the first number (n 1 ) is greater than the second number (n 2 ).

8. The planetary wheel ( 10 ) according to claim 7 ,
characterized in that the first number (n 1 ) is greater than the second number (n 2 ) by an integer factor.

9. The planetary wheel ( 10 ) according to claim 1 ,
characterized in that the ribs ( 32 )
form a first group of ribs ( 36 ) having first ribs ( 321 ) and a second group of ribs ( 38 ) having second ribs ( 322 ), wherein
the first ribs ( 321 ) of the first planetary wheel end face ( 18 ) and the second ribs ( 322 ) are arranged on the second planetary wheel end face ( 20 ), wherein
the first ribs ( 321 ) are arranged rotated relative to the second ribs ( 322 ) by an angle of rotation in a plane running perpendicular to the planetary wheel axis of rotation (APR).

10. Planetary carrier ( 44 ) for a planetary wheel ( 10 ) according to claim 1 , comprising a carrier body ( 46 ) which
extends along a planetary carrier axis of rotation (APT),
comprises a first disk-shaped body ( 48 ) and
a second disk-shaped body ( 50 ), wherein
the first disk-shaped body ( 48 ) and the second disk-shaped body ( 50 ) are connected to one another with at least one connecting body ( 52 , 54 , 56 ),
the first disk-shaped body ( 48 ) has at least one first bearing recess ( 60 ),
into which the first bearing section ( 24 ) of the planetary wheel ( 10 ) can be introduced, and
which has at least one circumferentially extending first catching projection ( 64 ), and

the second disk-shaped body ( 50 ) has at least one second bearing recess ( 62 ),
into which the second bearing section ( 26 ) of the planetary wheel ( 10 ) can be introduced, and
which has at least one circumferentially extending second catching projection ( 66 ),

wherein
at least one first axial counter-stop surface ( 76 ) surrounding the first bearing recess ( 60 ) is provided on the first disk-shaped body ( 48 ) and/or
at least one second axial counter-stop surface ( 78 ) surrounding the second bearing recess ( 62 ) is provided on the second disk-shaped body ( 50 ),
wherein
the first axial counter-stop surface ( 76 ) and/or the second axial counter-stop surface ( 78 ) interact(s) with the planetary wheel stop projections ( 40 ) when the planetary wheel ( 10 ) is introduced into the first bearing recess ( 60 ) and the second bearing recess ( 62 ), wherein
the first counter-stop surface ( 76 ) is adjoined toward the first bearing recess ( 60 ) by a first inclined surface ( 80 ) which is inclined at a first inclined surface angle (α 1 ) relative to the first counter-stop surface ( 76 ) and/or
the second counter-stop surface ( 78 ) is adjoined toward the second bearing recess ( 62 ) by a second inclined surface ( 82 ), which is inclined at a second inclined surface angle (α 2 ) relative to the second counter-stop surface ( 76 ).

11. The planetary carrier ( 44 ) according to claim 10 ,
characterized in that
the first axial counter-stop surface ( 76 ) merges into the first inclined surface ( 80 ) with a convex first inclined surface bulge and/or
the second axial counter-stop surface ( 78 ) merges into the second inclined surface ( 82 ) with a convex second inclined surface bulge.

12. The planetary carrier ( 44 ) according to claim 10 ,
characterized in that the carrier body ( 46 ) has
at least one radially outer connecting body ( 52 ),
at least one radially inner connecting body ( 54 ) and
at least one further connecting body ( 56 ) arranged between the radially outer connecting body ( 52 ) and the radially inner connecting body ( 54 ), wherein
the radially outer connecting body ( 52 ), the radially inner connecting body ( 54 ) and the further connecting body ( 56 ) connect the first disk-shaped body ( 48 ) to the second disk-shaped body ( 50 ).

13. The planetary carrier ( 44 ) according to claim 12 ,
characterized in that the further connecting body ( 56 ) is connected to the radially outer connecting body ( 52 ) and the radially inner connecting body ( 54 ).

14. The planetary carrier ( 44 ) according to claim 12 ,
characterized in that the radially outer connecting body ( 52 ) and the at least one further connecting body ( 56 ) surround a closed recess ( 58 ) of the second disk-shaped body ( 50 ).

15. The planetary carrier ( 44 ) according to claim 12 ,
characterized in that
at least one of the further connecting bodies ( 56 ) having a concave first bulge ( 871 ) merges into the first axial counter-stop surface ( 76 ).

16. The planetary carrier ( 44 ) according t

Assignees

• Ims Gear Se & Co Kgaa

Inventors

• Suess Marius
• Schwoerer Simon
• Aberle Steffen
• Fechler Jens

Classifications

• F16H1/32 Primary

  in which the central axis of the gearing lies inside the periphery of an orbital gear · CPC title

• F16H55/17 Primary

  Toothed wheels (worm wheels F16H55/22; chain wheels F16H55/30) · CPC title

• F16H57/082 Primary

  Planet carriers · CPC title

• F16H57/08 Primary

  of gearings with members having orbital motion · CPC title

• F16H2057/085

  Bearings for orbital gears · CPC title