Electric machine having a mounting flange

Patent metadata

Field	Value
Publication number	US-10079522-B2
Application number	US-201415034192-A
Country	US
Kind code	B2
Filing date	Oct 24, 2014
Priority date	Nov 5, 2013
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

The invention relates to an electric machine (12) having a mounting flange (10) and to a method for producing an electric machine (12) of this kind having a mounting flange (10) of this type. Said mounting flange is arranged on a—preferably cylindrical—housing part (14) of said electric machine (12) in such a way that the mounting flange (10) at least in portions surrounds the housing part (14) in the circumferential direction (16) of said housing part (14), the mounting flange (10) and/or the housing part (14) being coated. The invention is characterized in that the mounting flange (10) has an at least radially directed raised portion (18) abutting the housing part (14), the mounting flange (10) being mounted on the housing part (14) by a welding process.

First claim

The invention claimed is:

1. An electric machine ( 12 ) having a mounting flange ( 10 ), wherein the mounting flange ( 10 ) is arranged on a housing part ( 14 ) of the electric machine ( 12 ) in such a way that the mounting flange ( 10 ) at least in portions surrounds the housing part ( 14 ) in a peripheral direction ( 16 ) of the housing part ( 14 ), wherein at least one of the mounting flange ( 10 ) and the housing part ( 14 ) is coated, characterized in that the mounting flange ( 10 ) has at least one radially directed raised portion ( 18 ), which abuts the housing part ( 14 ), wherein the mounting flange ( 10 ) is mounted on the housing part ( 14 ) by a welding process.

2. The electric machine ( 12 ) as claimed in claim 1 , characterized in that the raised portion ( 18 ) of the mounting flange ( 10 ) extends axially along the housing part ( 14 ).

3. The electric machine ( 12 ) as claimed in claim 1 , characterized in that the mounting flange ( 10 ) is produced from a sheet metal part, wherein the raised portion ( 18 ) is formed in one piece from the sheet metal part.

4. The electric machine ( 12 ) as claimed in claim 1 , characterized in that the housing part ( 14 ) has a raised portion, which extends axially along the housing part ( 14 ) and which abuts the mounting flange ( 10 ).

5. The electric machine ( 12 ) as claimed in claim 1 , characterized in that the mounting flange ( 10 ) has a circular collar ( 20 ), which surrounds the housing part ( 14 ) in the peripheral direction ( 16 ), wherein the collar ( 20 ) extends at least in portions axially along the housing ( 14 ), and the raised portion ( 18 ) is formed from the collar ( 20 ), and in that a radial gap ( 19 ) is formed between the collar ( 20 ) and the housing part ( 14 ), wherein the gap ( 19 ) extends in the peripheral direction ( 16 ) and in the axial direction ( 17 ).

6. The electric machine ( 12 ) as claimed in claim 5 , characterized in that a stamping burr ( 49 ) is integrally molded on an axial end ( 24 ) of the collar ( 20 ), to which stamping burr a weld seam ( 22 ) is applied by laser welding, whereby the mounting flange ( 10 ) is mounted on the housing part ( 14 ).

7. The electric machine ( 12 ) as claimed in claim 5 , characterized in that the mounting flange ( 10 ) is mounted on the housing part ( 14 ) by at least one lap weld seam ( 26 ), which is applied to a raised portion ( 18 ).

8. The electric machine ( 12 ) as claimed in claim 7 , characterized in that the collar ( 20 ) has at least two raised portions ( 18 ) separated from one another in the peripheral direction ( 16 ) by an angle ( 28 ), and the weld seam ( 22 ) extends between the two raised portions ( 18 ) at an axial end ( 24 ) of the collar ( 20 ).

9. The electric machine ( 12 ) as claimed in claim 5 , characterized in that the mounting flange ( 10 ) has, radially inwardly at one end ( 24 ) of the collar ( 20 ), a radius ( 21 ) or a chamfer-shaped flattening.

10. The electric machine ( 12 ) as claimed in claim 5 , characterized in that the mounting flange ( 10 ) has, at a first end ( 25 ), at least one radially outwardly extending extension ( 48 ), such that the extension ( 48 ) is arranged transversely to the collar ( 20 ), wherein the extension ( 48 ) has receptacles ( 44 ) for connection elements.

11. The electric machine ( 12 ) as claimed in claim 5 , characterized in that the collar ( 20 ) has at least two raised portions ( 18 ) separated from one another in the peripheral direction ( 16 ) by an angle ( 28 ), and a weld seam ( 22 ) extends between the two raised portions ( 18 ) at an axial end ( 24 ) of the collar ( 20 ), and the weld seam ( 22 ) closed in the peripheral direction ( 16 ).

12. The electric machine ( 12 ) as claimed in claim 5 , characterized in that the mounting flange ( 10 ) has, at the first end ( 25 ), at least one radially outwardly extending extension ( 44 ), such that the extension ( 48 ) is arranged transversely to the collar ( 20 ), wherein the extension ( 48 ) has receptacles ( 44 ) for connection elements, wherein a band ( 46 ) is arranged between the collar ( 20 ) and extension ( 48 ), and the band ( 46 ) and the extension ( 48 ) lie in two different axial planes, wherein the extension ( 48 ) is offset.

13. The electric machine ( 12 ) as claimed in claim 1 , characterized in that the raised portion ( 18 ) of the mounting flange ( 10 ) extends axially along the housing part ( 14 ), and in that the raised portion ( 18 ) abuts the housing part ( 14 ) approximately linearly.

14. The electric machine ( 12 ) as claimed in claim 1 , characterized in that the mounting flange ( 10 ) is produced from a sheet metal part, which is cold-formed, wherein the raised portion ( 18 ) is formed in one piece from the sheet metal part.

15. The electric machine ( 12 ) as claimed in claim 1 , characterized in that the mounting flange ( 10 ) is mounted on the housing part ( 14 ) by means of at least one lap weld seam ( 26 ), which is applied to a raised portion ( 18 ) radially from the outside.

16. The electric machine ( 12 ) as claimed in claim 1 , characterized in that a housing ( 15 ) of the electric machine ( 12 ) has, on a radially outer edge ( 13 ), a radius or a chamfer-shaped flattening, which serve as axial insertion aids.

17. A method for producing an electric machine ( 12 ) having a mounting flange ( 10 ), the method comprising
Positioning the mounting flange ( 10 ) on a peripheral wall ( 11 ) of the electric machine ( 12 ), such that a collar ( 20 ) of the mounting flange ( 10 ) abuts a peripheral wall ( 11 ) radially by means of raised portions ( 18 ), and
Applying at least one weld seam ( 22 , 38 , 42 ) to at least one axial end ( 23 , 24 , 52 ) of the collar ( 20 ).

18. The method as claimed in claim 17 , characterized in that the mounting flange ( 10 ) is mounted on a housing part ( 14 ) of the electric machine ( 12 ) by laser welding, and the weld seam ( 22 ) is formed in a peripheral direction ( 17 ) at an axial end ( 23 , 24 , 25 ) of the collar ( 20 ).

19. The method as claimed in claim 18 , characterized in that, for the laser welding, a laser ( 30 ) encloses a welding angle ( 32 ) from 10° to 80° relative to a motor axis ( 34 ) which extends in the axial direction ( 17 ).

20. The method as claimed in claim 18 , characterized in that, for the laser welding, a laser ( 30 ) encloses a welding angle ( 32 ) from 30° to 50°, relative to a motor axis ( 34 ) which extends in the axial direction ( 17 ).

21. The method as claimed in claim 17 , characterized in that the weld seam ( 22 ) is at least one of the following: a butt joint seam ( 42 ), which is welded on at an axial end ( 24 ) of the collar ( 20 ); a fillet seam ( 38 ), which is welded on at an axial end ( 24 ) of the collar ( 20 ); and a lap weld seam ( 26 ), which is welded on at an overlapping region of the collar ( 20 ) and of the housing part ( 14 ).

22. The method as claimed in claim 17 , characterized in that the mounting flange ( 10 ) is a cold-formed sheet metal part, which is produced by a deep drawing method, wherein at least one raised portion ( 18 ) is formed in one piece with the mounting flange ( 10 ), wherein at least one of the mounting flange ( 10 ) and the housing part ( 14 ) has a coating which contains tin, zinc, nickel, chromium or copper.

Assignees

• Bosch Gmbh Robert

Inventors

• Keller Thomas
• Bauer Christian

Classifications

• B23K26/28

  of curved planar seams · CPC title

• H02K5/00 Primary

  Casings; Enclosures; Supports · CPC title

• B23K2201/36

  Operations & Transport · mapped topic

• H02K15/14

  Casings; Enclosures; Supports · CPC title

• H02K5/26 Primary

  Means for adjusting casings relative to their supports · CPC title