Grounding brush assembly

Patent metadata

Field	Value
Publication number	US-2024128827-A1
Application number	US-202318470951-A
Country	US
Kind code	A1
Filing date	Sep 20, 2023
Priority date	Oct 12, 2022
Publication date	Apr 18, 2024
Grant date	—

Abstract

A grounding brush assembly includes a grounding brush having a plurality of conductive fibers and a support including a mounting portion housing the conductive fibers and first and second lateral flanges extending from the mounting portion and fitting axially around the conductive fibers. A mounting plate is integral with the support and is provided with at least one radial portion extending radially outwardly relative to the mounting portion of the support. The free end of the radial portion of the mounting plate at least partially defines the outer diameter of the assembly.

First claim

We claim:

1 . A grounding brush assembly comprising:
a grounding brush including a plurality of conductive fibers; a support including a mounting portion, the conductive fibers being housed within the mounting portion, and first and second lateral flanges extending from the mounting portion and fitting axially around the conductive fibers; and a mounting plate integral with or connected with the support and having at least one radial portion extending radially outwardly with respect to the mounting portion of the support, the radial portion of the mounting plate having a free end at least partially defining the outer diameter of the assembly.

2 . The grounding brush assembly according to claim 1 , wherein the radial portion of the mounting plate extends entirely radially.

3 . The grounding brush assembly according to claim 1 , wherein the mounting plate is provided with at least one elastically deformable tab extending from the radial portion and projecting axially with respect to the radial portion.

4 . The grounding brush assembly according to claim 3 , wherein the at least one tab and the mounting plate are formed in one piece.

5 . The grounding brush assembly according to claim 1 , wherein the mounting plate and the support are formed in one piece.

6 . The grounding brush assembly according to claim 1 , wherein the mounting plate includes a plurality of tabs for axial and radial retention of the support.

7 . The grounding brush assembly according to claim 1 , wherein the mounting plate is integral with the first lateral flange of the support.

8 . An electric motor comprising:
a housing; a shaft; a grounding brush assembly mounted radially between the housing and the shaft and including a grounding brush having a plurality of conductive fibers, a support including a mounting portion, the conductive fibers being housed within the mounting portion, and first and second lateral flanges extending from the mounting portion and fitting axially around the conductive fibers, and a mounting plate integral with or connected with the support and having at least one radial portion extending radially outwardly with respect to the mounting portion of the support, the radial portion of the mounting plate having a free end at least partially defining the outer diameter of the assembly; at least one bearing interposed between the shaft and the bore of the housing; a retaining means integral with the housing; and at least one axial biasing means located axially at least in part between the radial portion of the mounting plate of the assembly and the retaining means, the conductive fibers of the assembly being in contact with the shaft, a radial clearance remaining between the free end of the radial portion of the mounting plate and the bore of the housing.

9 . The motor according to claim 8 , wherein the radial portion of the mounting plate is mounted so as to bear axially against one of the front faces of the bearing.

10 . The motor according to claim 8 , wherein the axial biasing means and the radial portion of the mounting plate are formed in one piece.

11 . The motor according to claim 8 , wherein the axial biasing means includes a spring axially interposed between the radial portion of the mounting plate and the retaining means.

12 . The motor according to claim 8 , wherein the radial portion of the mounting plate extends entirely radially.

13 . The motor according to claim 8 , wherein the mounting plate is provided with at least one elastically deformable tab extending from the radial portion and projecting axially with respect to the radial portion.

14 . The motor according to claim 13 , wherein the at least one tab and the mounting plate are formed in one piece.

15 . The motor according to claim 8 , wherein the mounting plate and the support are formed in one piece.

16 . The motor according to claim 8 , wherein the mounting plate includes a plurality of tabs for axial and radial retention of the support.

17 . The motor according to claim 8 , wherein the mounting plate is integral with the first lateral flange of the support.

Assignees

• Skf Ab

Inventors

• Arnault Benoit
• Benevise Emmanuel

Classifications

• H02K13/00

  Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings (supporting or protecting brushes or brush holders in motor casings or enclosures H02K5/14); Disposition of current collectors in motors or generators; Arrangements for improving commutation · CPC title

• H02K11/40 Primary

  Structural association with grounding devices · CPC title

• H01R39/39

  wherein the brush is fixedly mounted in the holder · CPC title

• H01R39/20

  characterised by the material thereof · CPC title

• H01R39/24 Primary

  Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres · CPC title