# US 11,994,202 B2 · Gearing unit for a drive assembly and method for mounting the gearing unit

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- Number: US 11,994,202 B2
- Document ID: US11994202B2
- Status: Granted
- Kind: B2
- Application number: 17/774,490
- Filed: 2020-11-12
- Published: 2022-12-08
- Granted: 2024-05-28
- Earliest claimed: 2019-12-11
- Assignees: Schaeffler Technologies AG & Co. KG
- Applicants: Schaeffler Technologies AG & Co. KG
- Inventors: Bastian Rupp; Jochen Loeffelmann
- Web page: https://patentgrep.com/patent/US11994202B2

## CPC

- F16H 57/027: characterised by means for venting gearboxes, e.g. air breathers
- F16H 1/20: involving more than two intermeshing members
- F16H 57/023: Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
- F16H 57/031: characterised by covers or lids for gearboxes
- F16H 2057/02043: {for vehicle transmissions}
- F16H: GEARING

## Abstract

During operation of a wet-running gearbox, vapours and/or air can arise in a housing of the gearbox, which can increase an internal pressure in the housing and thus can influence the operating safety of the gearbox. The problem addressed by the invention is that of creating a gearing unit, which is distinguished by an advantageous arrangement of a venting device. To this end, a gearing unit 1 for a drive assembly is specified having: a gearing device 4 for converting a drive torque of the drive assembly, the gearing device 4 having an input shaft 8, and the input shaft 8 defining a main axis H; a gearing housing 2 for accommodating the gearing device 4, the gearing housing 2 defining an accommodation space 3 for the gearing device 4; and a venting device 10 for venting the accommodation space 3, the venting device 10 being mounted on the gearing housing 2, wherein the venting device 10 is arranged coaxially with the main axis H and on an axial end face of the input shaft 8.

## Claims

### Claim 1

A method for mounting a gearing unit, the method, comprising:
providing a gearing housing having a first housing component, the gearing housing defining an accommodation space;
forming a gear wheel assembly by meshing an intermediate shaft and an output shaft, wherein the gear wheel assembly is configured to convert a drive torque of a drive assembly and includes an input shaft defining a main axis;
inserting the gear wheel assembly into the first housing component;
connecting a second housing component to the first housing component, wherein the second housing component and the first housing component define the accommodation space therebetween, wherein the gear wheel assembly is arranged in the accommodation space;
inserting the input shaft into the accommodation space coaxially to the main axis via a mounting opening arranged in at least one of the first or second housing components, wherein the input shaft is brought into meshing engagement with the intermediate shaft; and
inserting a closure cover into the mounting opening, wherein the closure cover closes the mounting opening, wherein a venting device is integrated in the closure cover and is arranged coaxially to the main axis and on one axial end side of the input shaft, the venting device extending through the closure cover to the accommodation space.