Multi-component gear, gear and planetary gearset

Patent metadata

Field	Value
Publication number	US-11662009-B2
Application number	US-202117481725-A
Country	US
Kind code	B2
Filing date	Sep 22, 2021
Priority date	Sep 24, 2020
Publication date	May 30, 2023
Grant date	May 30, 2023

Abstract

The present invention relates to a multi-component gear (1) with an axis of rotation (X) and a first end face (11) and a second end face (12), having an inner part (20) and an outer part (30) made of a plastic with at least one injection-molding section (32), wherein the outer part (30) is arranged on an outer lateral surface (24) of the inner part (20) in a form-fitting and/or integral manner on the inner part (20), and wherein the outer part (30) on the first and/or the second end face (11, 12) has at least one tab (40) which is free-standing in the circumferential direction around the axis of rotation (X) and which protrudes over the relevant end face (11, 12) of the inner part (20). The present invention also relates to a gear (2) and a planetary gearset (3).

First claim

The invention claimed is:

1. A multi-component gear ( 1 ) with an axis of rotation (X) and a first end face ( 11 ) and a second end face ( 12 ), comprising:
an inner part ( 20 ), and
an outer part ( 30 ) made of a plastic with at least one injection-molding section ( 32 ),
wherein the outer part ( 30 ) is arranged on an outer lateral surface ( 24 ) of the inner part ( 20 ) in a form-fitting and/or integral manner on the inner part ( 20 ), and
wherein the outer part ( 30 ) on the first and/or the second end face ( 11 , 12 ) has at least one tab ( 40 ) which is free-standing in the circumferential direction around the axis of rotation (X) and which protrudes over the relevant end face ( 11 , 12 ) of the inner part characterized in that the at least one tab ( 40 ) protrudes from a recess ( 46 ) ( 20 ).

2. The multi-component gear ( 1 ) according to claim 1 , characterized in that the outer part ( 30 ) has a toothed ring ( 35 ).

3. The multi-component gear ( 1 ) according to claim 1 , characterized in that the tabs ( 40 ) are arranged symmetrically around the circumference.

4. The multi-component gear ( 1 ) according to claim 1 , characterized in that the number of tabs ( 40 ) on the first and the second end face ( 11 , 12 ) is the same.

5. The multi-component gear ( 1 ) according to claim 1 , characterized in that the tabs ( 40 ) protrude from a flange ( 36 ) set back from the first and/or the second end face ( 11 , 12 ).

6. The multi-component gear ( 1 ) according claim 1 , characterized in that the at least one tab ( 40 ) is formed by a free-standing L-shaped tongue ( 41 ).

7. The multi-component gear ( 1 ) according to claim 1 , characterized in that the at least one tab ( 40 ) has a cut-out ( 48 ).

8. The multi-component gear ( 1 ) according to claim 1 , characterized in that at least one pocket ( 50 ) connecting the first end face ( 11 ) and the inner lateral surface of the outer part ( 30 ) and/or at least one pocket ( 50 ) connecting the second end face ( 12 ) and the inner lateral surface ( 34 ) of the outer part ( 30 ) is provided.

9. The multi-component gear ( 1 ) according to claim 8 , characterized in that the at least one pocket ( 50 ) exposes the outer lateral surface ( 24 ) of the inner part ( 20 ) in some areas.

10. The multi-component gear ( 1 ) according to claim 8 , characterized in that the number of tabs ( 40 ) on the first end face ( 11 ) and on the second end face ( 12 ) is the same and/or that the number of pockets ( 50 ) on the first end face ( 11 ) and on the second end face ( 12 ) is the same.

11. The multi-component gear ( 1 ) according to claim 8 , characterized in that the at least one tab ( 40 ) on the first end face ( 11 ) and the at least one tab ( 40 ) on the second end face ( 12 ) are arranged in alignment with one another in the circumferential direction in the direction of the axis of rotation (X).

12. The multi-component gear ( 1 ) according to claim 9 , characterized in that the at least one pocket ( 50 ) on the first end face ( 11 ) and/or the second end face ( 12 ) is aligned with the at least one tab ( 40 ) on the other end face ( 11 , 12 ) in the circumferential direction in the direction of the axis of rotation (X).

13. The multi-component gear ( 1 ) according to claim 1 , characterized in that the outer part ( 30 ) on the first and/or the second end face ( 11 , 12 ) has two or more tabs ( 40 ) that are free-standing in the circumferential direction, and that between two adjacent tabs ( 40 ) a free area ( 45 ) is formed.

14. The multi-component gear ( 1 ) according to claim 1 , characterized in that the at least one pocket ( 50 ) is arranged in the circumferential direction in the free area ( 45 ) and/or that the at least one pocket ( 50 ) is arranged over the entire free area ( 45 ).

15. A multi-component gear ( 1 ) with an axis of rotation (X) and a first end face ( 11 ) and a second end face ( 12 ), comprising: —an inner part ( 20 ), and —an outer part ( 30 ) made of a plastic with at least one injection-molding section ( 32 ), —wherein the outer part ( 30 ) is arranged on an outer lateral surface ( 24 ) of the inner part ( 20 ) in a form-fitting and/or integral manner on the inner part ( 20 ), and —wherein the outer part ( 30 ) on the first and/or the second end face ( 11 . 12 ) has at least one tab ( 40 ) which is free-standing in the circumferential direction around the axis of rotation (X) and which protrudes over the relevant end face ( 11 , 12 ) of the inner part ( 20 ), wherein. at least one weld line ( 33 ) is formed and that the at least one tab ( 40 ) is arranged in the circumferential direction at a distance from the at least one weld line ( 33 ).

16. The multi-component gear ( 1 ) according to claim 1 , characterized in that the inner part ( 20 ) is a shaft or a roller bearing with an inner ring ( 21 ) and an outer ring ( 22 ).

17. The multi-component gear ( 1 ) according to claim 1 , characterized in that the at least one tab ( 40 ) of the outer part ( 30 ) protrudes by at least 0.5 mm in a radial direction onto the first end face ( 11 ) and/or the second end face ( 12 ) of the outer ring ( 22 ), but does not protrude beyond the outer ring ( 22 ) in the radial direction.

18. A gear ( 2 ), in particular a planet gear, formed from a multi-component gear ( 1 ) according to claim 1 .

19. A planetary gearset ( 3 ) having at least one gear ( 2 ) with the features of claim 18 .

Assignees

• Ims Gear Se & Co Kgaa

Inventors

• Rieple Adrian
• Oberle Stephan
• Birk Sebastian

Classifications

• F16H55/08

  Profiling · CPC title

• F16H55/17

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

• F16H55/06 Primary

  Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties · CPC title

• F16H57/08

  of gearings with members having orbital motion · CPC title

• B29D15/00

  Producing gear wheels or similar articles with grooves or projections, e.g. control knobs · CPC title