Transmission drive assembly

Patent metadata

Field	Value
Publication number	US-9759306-B2
Application number	US-201214239180-A
Country	US
Kind code	B2
Filing date	Jun 20, 2012
Priority date	Aug 16, 2011
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

The invention relates to a transmission drive assembly ( 10 ) having a drive motor ( 11 ) the drive shaft ( 23 ) of which protrudes with a portion ( 25 ) thereof into a transmission housing ( 12 ), wherein the drive shaft ( 23 ) is arranged on the side facing the transmission housing ( 12 ) in a bearing ( 32 ) which is held in a form-fit or force-closed manner in a substantially sleeve-shaped holding element ( 35; 65 ) which is arranged in a holding fixture ( 27 ) of the transmission housing ( 12 ). According to the invention, in an installation position for introducing and positioning the holding element ( 35; 65 ) in the holding fixture ( 27 ) of the transmission housing ( 12 ), the holding element ( 35; 65 ) is positioned in a first axial end position defined by an abutment element ( 30 ) of the drive motor ( 11 ), and, in an end position of the drive shaft ( 23 ) in the transmission housing ( 12 ), the holding element ( 35; 65 ) can be slid by means of a sliding element ( 47; 61; 62, 63 ) on the drive shaft ( 23 ) into a second axial end position which is axially remote from the at least one abutment element.

First claim

The invention claimed is:

1. A transmission drive assembly ( 10 ) having a drive motor ( 1 ) the drive shaft ( 23 ) of which protrudes with a portion ( 25 ) thereof into a transmission housing ( 12 ), wherein the drive shaft ( 23 ) is arranged on a side facing the transmission housing ( 12 ) in a bearing which is held in a form-fit or force-closed manner in a substantially sleeve-shaped holding element ( 35 ; 65 ) which is arranged in a holding fixture ( 27 ) of the transmission housing ( 12 ), characterized in that, in an installation position for introducing and positioning the holding element ( 35 ; 65 ) in the holding fixture ( 27 ) of the transmission housing ( 12 ), the holding element ( 35 ; 65 ) is positioned in a first axial end position defined by an abutment element ( 30 ) of the drive motor ( 11 ), and in that, in an end position of the drive shaft ( 23 ) in the transmission housing ( 12 ), the holding element ( 35 ; 65 ) can be slid by means of a sliding element ( 47 ; 61 ; 62 , 63 ) on the drive shaft ( 23 ) into a second axial end position which is axially remote from the at least one abutment element.

2. The transmission drive assembly according to claim 1 , characterized in that the holding element ( 35 ; 65 ) abuts, on a side facing away from the holding fixture ( 27 ) of the transmission housing ( 12 ), with an end face ( 41 ) thereof at least indirectly against a device, which acts as an abutment element and is disposed in an axially fixed manner on the drive shaft ( 23 ).

3. The transmission drive assembly according to claim 2 , characterized in that the holding element ( 35 ; 65 ) has a flange-like circumferential edge ( 39 ) which forms the end face ( 41 ) and in that the edge ( 39 ) interacts with at least one retaining element ( 43 ) which delimits a displaceability of the holding element ( 35 ; 65 ) on the drive shaft ( 23 ).

4. The transmission drive assembly according to claim 1 , characterized in that the bearing ( 32 ) is axially fixed in the holding element ( 35 ; 65 ) and is disposed in an axially displaceable manner on the drive shaft ( 23 ), and axially abuts against a retaining ring ( 31 ) in the installation position.

5. The transmission drive assembly according to claim 1 , characterized in that the holding element ( 35 ) has a radially circumferential wall and in that at least one recess ( 45 ) is formed in the wall, said recess interacting with the sliding element to axially displace the holding element ( 35 ).

6. The transmission drive assembly according to claim 5 , characterized in that one of the sliding element ( 47 ; 61 ) and the recess ( 45 ) has at least one chamfer ( 48 , 49 ) which effects an axial displacement of the holding element ( 35 ) by action of the sliding element ( 47 ; 61 ) thereon.

7. The transmission drive assembly according to claim 6 , characterized in that the holding element ( 35 ) is embodied as a deep drawn component and the recess ( 45 ) as an opening, and in that the at least one chamfer ( 48 , 49 ) is formed on the sliding element ( 47 ; 61 ).

8. The transmission drive assembly according to claim 1 , characterized in that the sliding element ( 47 ) is a constituent part of the transmission housing ( 12 ).

9. The transmission drive assembly according to claim 1 , characterized in that the sliding element ( 60 ; 63 , 64 ) is embodied as a component that is separate from the transmission housing ( 12 ).

10. The transmission drive assembly according to claim 6 , characterized in that the holding fixture ( 27 ) in the transmission housing ( 12 ) is delimited by a wall in which an opening ( 46 ) is configured, and in that the opening ( 46 ) is disposed in alignment with the recess ( 45 ) and forms a guideway for the sliding element ( 47 ).

11. The transmission drive assembly according to claim 1 , characterized in that the holding element ( 35 ; 65 ) abuts, on a side facing away from the holding fixture ( 27 ) of the transmission housing ( 12 ), with an end face ( 41 ) thereof at least indirectly against a brush holder device ( 30 ) of the drive motor ( 11 ), which acts as an abutment element and is disposed in an axially fixed manner on the drive shaft ( 23 ).

12. The transmission drive assembly according to claim 1 , characterized in that the sliding element ( 47 ) is a constituent part of a cover element ( 15 ) of the transmission housing ( 12 ).

Assignees

• Schorpp Gerold
• Heitz Robert
• Steuer Peter
• Reichmann Siegfried
• Bosch Gmbh Robert

Inventors

• Schorpp Gerold
• Heitz Robert
• Steuer Peter
• Reichmann Siegfried

Classifications

• F16H57/021 Primary

  Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings · CPC title

• H02K7/08

  Structural association with bearings · CPC title

• F16H57/039

  Gearboxes for accommodating worm gears · CPC title

• F16H2057/0213

  Support of worm gear shafts · CPC title

• F16H57/023 Primary

  Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly · CPC title