Planetary gear device comprising axially rotation-protected thrust washer and use

1. A planetary gear device, comprising:

gear components revolving around an axis of rotation, wherein the gear components comprise a planet gear;

a planetary carrier for the planet gear;

a gear housing encasing the revolving gear components;

a thrust washer supported around or at the axis of rotation; and

a rotation protection, by means of which the thrust washer can be positioned so as to be rotation-protected;

wherein the rotation protection is an axially-engaging rotation protection, and wherein the thrust washer is arranged such that the axially-engaging rotation protection is provided relative to the planetary carrier and/or relative to the gear housing by means of an axially-protruding protrusion at an interface between the thrust washer, the planetary carrier, and/or the gear housing; and

wherein the gear housing comprises an intermediate flange or is at least partially formed by the intermediate flange, at which intermediate flange recesses corresponding to protrusions of the axial rotation protection are formed, in particular at an inner jacket surface, wherein the thrust washer is axially rotation-protected at the intermediate flange.

2. The planetary gear device of claim 1 , wherein the planetary carrier is designed as a disk.

3. The planetary gear device of claim 1 , wherein the axially-engaging rotation protection is at least partially provided by means of the thrust washer and is designed at a radially outer circumferential contour of the thrust washer, in particular at several circumferential positions, in particular exclusively radially outside in a radial region of the thrust washer located farthest on an outside.

4. The planetary gear device of claim 1 , wherein the thrust washer engages in a positive and/or non-positive manner with the planetary carrier and/or with the gear housing or with a housing component of the gear housing by means of the axially-engaging rotation protection, in particular without play.

5. The planetary gear device of claim 1 , wherein the thrust washer is designed as a central thrust washer, which is assigned to a plurality of planet gears; and/or wherein the thrust washer is a shaped part comprising axial protrusions created by means of shaping.

6. The planetary gear device of claim 1 , wherein the axially-engaging rotation protection is provided by means of a positive and/or non-positive axial coupling, which coupling ensures a material-elastic biasing in the radial direction, in particular by means of material-elastic biasing of axial protrusions of the thrust washer inward or outward in the radial direction; and/or wherein the thrust washer forms a material-elastically biased coupling with the planetary carrier and/or with the gear housing, in particular the intermediate flange, in particular an axial plug-in coupling with material-elastic biasing in the radial direction.

7. The planetary gear device of claim 1 , wherein the thrust washer is arranged such that the axially-engaging rotation protection is provided relative to the planetary carrier by means of positive axial engagement with an axially-protruding protrusion in the axial direction, wherein the axially-protruding protrusion is provided by means of the thrust washer, and wherein the planetary carrier has a geometrically corresponding contour at an outer jacket surface, in particular a surface portion, for receiving the axially-protruding protrusion.

8. The planetary gear device of claim 1 , wherein the axially-engaging rotation protection is provided by means of the thrust washer, in particular as an integral one-piece design of the thrust washer; and/or wherein the axially-engaging rotation protection is provided at an outer contour of the thrust washer located radially on the outside, in particular at the edge of the thrust washer defining the outer circumference of the thrust washer; and/or wherein the axially-engaging rotation protection is arranged at a radial offset relative to the circumferential edge of the thrust washer, in particular at least 1 to 5% of a radius or a diameter of the thrust washer.

9. The planetary gear device of claim 1 , wherein the axially-engaging rotation protection comprises a plurality of protrusions arranged at the outer contour of the thrust washer designed as tabs, in particular in symmetrical equidistantly spaced apart, fully-circumferential arrangement of four protrusions each offset by 90°; and wherein the plurality of protrusions extend in an axial direction in a range of 1 to 10 percent of a diameter of the thrust washer; and wherein the plurality of protrusions extend in a circumferential direction in a range of 1 to 15° at the thrust washer.

10. The planetary gear device of claim 1 , wherein the thrust washer is coupled to the gear housing by means of a play adaptation to the gear housing, in particular by means of material-elastic biasing in the radial direction; or wherein the thrust washer is coupled to the planetary carrier by means of a clamping fit to the planetary carrier, in particular by means of material-elastic biasing in the radial direction; or wherein the thrust washer is coupled to the planetary carrier by means of non-positive biasing to the planetary carrier by means of radially strutted tabs, in particular by means of material-elastic biasing in a radial direction at an outer jacket surface of the planetary carrier.

11. The planetary gear device of claim 1 , wherein the thrust washer for securing the axial rotation protection is coupled to the planetary carrier and/or the gear housing without play or at least essentially without play, in particular by means of the axial protrusions in a positive and/or non-positive coupling arrangement at an inner or outer jacket surface.

12. The planetary gear device of claim 1 , wherein the axially-engaging rotation protection is provided by the thrust washer in an axially-engaging arrangement of the thrust washer with the planetary carrier or with the intermediate flange of the planetary gear device, wherein axial protrusions are provided at the thrust washer, in particular as an integral one-piece design, and are brought into axial positive or non-positive engagement with the planetary carrier or the intermediate flange, in particular in that the axial protrusions are brought into abutment without play at an outer jacket surface of the planetary carrier or at an inner jacket surface of the intermediate flange at respective corresponding positive or non-positive contours.

13. The planetary gear device of claim 1 , wherein the intermediate flange is set up to form axial rotation protection in a coupling arrangement with the thrust washer; and wherein the intermediate flange has an inner jacket surface that defines recesses; and wherein the recesses are designed so as to geometrically correspond to axial protrusions of the thrust washer, and which are arranged and set up for a positive or non-positive coupling with the axial protrusions by means of axial engagement, in particular in response to material-elastic biasing in a radial direction.

14. The planetary gear device of claim 1 , wherein the planetary carrier is set up to form an axial rotation protection in a coupling arrangement with the thrust washer; and wherein the planetary carrier has an outer jacket surface that defines surface portions; and wherein the surface portions are designed so as to geometrically correspond to axial protrusions of the thrust washer, and which are arranged and set up for a positive and/or non-positive coupling with the axial protrusions by means of axial engagement, in particular in response to material-elastic biasing in a radial direction.

15. A thrust washer for a planetary gear device, comprising axial protrusions for a play-free non-positive and/or positive axial rotation protection of the thrust washer at a planetary carrier and/or at a gear housing component, in relative arrangement in the planetary gear device such that the axial rotation protection is provided by means of axially-engaging corresponding contours at the thrust washer as well as at the planetary carrier and/or at the gear housing component;

wherein the gear housing comprises an intermediate flange or is at least partially formed by the intermediate flange, at which intermediate flange recesses corresponding to contours of the thrust washer are formed, in particular at an inner jacket surface, wherein the thrust washer is axially rotation-protected at the intermediate flange.

16. A planetary gear device, comprising:

an intermediate flange comprising an inner jacket surface that defines recesses that extend axially;

a central thrust washer comprising axial protrusions for providing an axial rotation protection with respect to revolving gear components of a gear stage by means of play-free non-positive and/or positive axial engagement of the central thrust washer with the intermediate flange or a planetary carrier of the planetary gear device, in that axial protrusions of the thrust washer engage axially with corresponding recesses of the inner jacket surface of the intermediate flange in response to material-elastic biasing in a radial direction, or with corresponding contours or surface portions of the planetary carrier, and cooperate in a positive and/or non-positive manner with axial contours corresponding to the planetary carrier, and thus form the axial rotation protection.

17. The central thrust washer of claim 16 , wherein the revolving gear components comprise at least one planet gear.

18. The central thrust washer of claim 16 , wherein the axial rotation protection is provided without play at several circumferential positions.