Planet carrier assembly

Patent metadata

Field	Value
Publication number	US-2024011551-A1
Application number	US-202118035763-A
Country	US
Kind code	A1
Filing date	Oct 28, 2021
Priority date	Dec 2, 2020
Publication date	Jan 11, 2024
Grant date	—

Abstract

A planet carrier assembly includes a shaft and a planet carrier with a first carrier side plate. The shaft includes an axially aligned axis of rotation, a guide surface, and an axial stop axially adjacent to the guide surface. The first carrier side plate is materially bonded to the shaft at a first joining zone formed axially between the axial stop and the first carrier side plate. The first carrier side plate has a holder radially supported on the guide surface and centered on the axis of rotation. The guide surface may run in a circumferential direction around the axis of rotation. The guide surface may have at least a section of an external cylindrical surface.

First claim

1 . A planet carrier assembly comprising at least one first carrier side plate of a planet carrier and comprising at least one shaft, the shaft being provided with at least one guide surface and with at least one axial stop axially adjacent to the guide surface, and a holder for the first carrier side plate being radially supported on the guide surface and being centered on an axially aligned axis of rotation of the shaft, the first carrier side plate and the shaft being at least materially bonded to one another in a first joining zone, wherein the first carrier side plate and the shaft are materially bonded to one another at the first joining zone formed axially between the axial stop and the first carrier side plate.

2 . The planet carrier assembly according to claim 1 , wherein the guide surface runs in the circumferential direction around the axis of rotation.

3 . The planet carrier assembly according to claim 1 , wherein the guide surface has an external cylindrical surface at least in sections.

4 . The planet carrier assembly according to claim 1 , wherein the axial stop is provided with at least one joining surface which faces the carrier side plate and extends radially outwards away from the axis of rotation and extends at least partially around the circumference of the joining surface, and that the first joining zone is formed axially between the carrier side plate and the joining surface.

5 . The planet carrier assembly according to claim 1 , wherein the shaft and the first carrier side plate are materially bonded to one another by means of a first weld seam designed as a V-seam in the first joining zone.

6 . The planet carrier assembly according to claim 1 , wherein the guide surface and the axial stop are formed on a hub which is directed radially away from the axis of rotation and emanating from the shaft.

7 . The planet carrier assembly according to claim 6 , wherein the shaft and the hub are made as one part and from one material with one another.

8 . The planet carrier assembly according to claim 1 , wherein the first carrier side plate and the shaft are formed from steel materials which differ from one another.

9 . The planet carrier assembly according to one of the claim 1 , wherein the first carrier side plate is connected to a second carrier side plate at a second joining zone by at least one second weld seam, wherein the second joining zone and the second weld seam are formed at least in part to be axial between the carrier side plates.

10 . The planet carrier assembly according to claim 9 , wherein the first carrier side plate and the second carrier side plate are designed as identical parts except for a holder designed as a cylindrical hole and concentric to the axis of rotation in the first carrier side plate that has a different or the same inner diameter as a through-hole formed in the second carrier side plate, and is concentric to the axis of rotation.

11 . A planet carrier assembly comprising:
a shaft comprising:
an axially aligned axis of rotation;
a guide surface; and
an axial stop axially adjacent to the guide surface; and
a planet carrier comprising a first carrier side plate materially bonded to the shaft at a first joining zone formed axially between the axial stop and the first carrier side plate, the first carrier side plate comprising a holder radially supported on the guide surface and centered on the axis of rotation.

12 . The planet carrier assembly of claim 11 , wherein the guide surface runs in a circumferential direction around the axis of rotation.

13 . The planet carrier of claim 11 , wherein the guide surface comprises at least a section of an external cylindrical surface.

14 . The planet carrier assembly of claim 11 , wherein:
the axial stop comprises a joining surface that:
faces the first carrier side plate;
extends radially outwards away from the axis of rotation; and
extends at least partially around the axis of rotation; and
the first joining zone is formed axially between the first carrier side plate and the joining surface.

15 . The planet carrier assembly of claim 11 wherein, the first carrier side plate is materially bonded to the shaft by a first weld seam designed as a V-seam.

16 . The planet carrier assembly of claim 11 further comprising a hub, wherein the guide surface and the axial stop are formed on the hub.

17 . The planet carrier assembly of claim 16 , wherein the hub is a portion of the shaft made as one part and from one material with the shaft.

18 . The planet carrier assembly of claim 11 , wherein the first carrier side plate and the shaft are formed from different steel materials.

19 . The planet carrier assembly of claim 11 , wherein the planet carrier further comprises a second carrier side plate materially bonded to the first carrier side plate by a second weld seam at a second joining zone formed axially between the first carrier side plate and the second carrier side plate.

20 . The planet carrier assembly of claim 19 , wherein the first carrier side plate and the second carrier side plate are designed as identical parts except that the holder designed as a cylindrical hole and concentric to the axis of rotation has a different inner diameter than a through-hole formed in the second carrier side plate that is concentric to the axis of rotation.

Assignees

• Schaeffler Technologies Ag

Inventors

• Keck Michael
• Heymel Jan
• Schimpf Ralph

Classifications

• F16H57/0018

  Shaft assemblies for gearings (camshafts with single track cams F16H53/02) · CPC title

• F16H57/08

  of gearings with members having orbital motion · CPC title

• F16H57/02

  Gearboxes; Mounting gearing therein · CPC title

• F16H57/0025 Primary

  with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods · CPC title

• F16H57/082 Primary

  Planet carriers · CPC title