Grounding ring and arrangement comprising such a grounding ring

Patent metadata

Field	Value
Publication number	US-12107463-B2
Application number	US-202217590830-A
Country	US
Kind code	B2
Filing date	Feb 2, 2022
Priority date	Feb 4, 2021
Publication date	Oct 1, 2024
Grant date	Oct 1, 2024

Abstract

A grounding ring, including a substantially circular-ring-shaped hub and at least two sliding contacts, which are arranged on the outside of the hub in the radial direction, extend in the circumferential direction and, in the manufactured state of the grounding ring, are arranged adjacent to one another at a distance from one another in the circumferential direction and delimit a circumferential gap with their sides facing one another in the circumferential direction, and wherein the circumferential gap is substantially bridged during the intended use of the grounding ring by the mutually facing and mutually non-overlapping sides.

First claim

The invention claimed is:

1. A grounding ring configured for radially outward contact with a machine element, comprising a substantially circular-ring-shaped hub and at least two sliding contacts, wherein:
the at least two sliding contacts are arranged on an outside of the hub in a radial direction, extend in a circumferential direction, and in a manufactured state of the grounding ring, are arranged adjacent to one another at a distance from one another in the circumferential direction to delimit a circumferential gap,
each of the sliding contacts comprises sides facing one another in the circumferential direction,
each of the sliding contacts are configured to bend such that the circumferential gap is substantially bridged by the mutually facing sides, the mutually facing sides do not overlap, and the at least two sliding contacts bear against the machine element outward in the radial direction, and
the circumferential gap in the manufactured state of the grounding ring is delimited in a substantially V-shaped manner.

2. The grounding ring according to claim 1 , wherein the number of sliding contacts is 4 to 50.

3. The grounding ring according to claim 1 , wherein the number of sliding contacts is 8 to 12.

4. The grounding ring according to claim 1 , wherein the circumferential gap has a radial extent of 2 mm to 20 mm.

5. The grounding ring according to claim 1 , wherein each of the sliding contacts have a base on a side facing the hub in the radial direction and a free end on a side opposite the base in the radial direction, the base has a first width in the circumferential direction, the free end has a second width in the circumferential direction and the first width is greater than the second width.

6. The grounding ring according to claim 5 , wherein a ratio of the first width to the second width is 1.25 to 1.5.

7. The grounding ring according to claim 1 , wherein the hub and the sliding contacts merge integrally into one another and are formed from uniform material and consist of an electrically conductive material.

8. The grounding ring according to claim 7 , wherein the electrically conductive material is a metallic material.

9. The grounding ring according to claim 1 , wherein the sides of each sliding contact are straight from the first width to the second width such that each sliding contact decreases in width at the same rate along the radial direction from the first width to the second width.

10. An arrangement comprising a grounding ring and a first and a second machine element, each of which consists of an electrically conductive material, wherein;
the grounding ring includes a circular-ring-shaped hub and at least two sliding contacts,
the at least two sliding contacts are arranged on an outside of the hub in a radial direction, extend in a circumferential direction, in a manufactured state of the grounding ring, are arranged adjacent to one another at a distance from one another in the circumferential direction and delimit a circumferential gap,
each of the sliding contacts comprises sides facing one another in the circumferential direction,
the circumferential gap is substantially bridged by the mutually facing and mutually non-overlapping sides, and
the first machine element is formed by a shaft or axle and the second machine element is formed by a housing enclosing the shaft or axle at a radial distance, wherein the grounding ring is arranged in the gap formed by the distance.

11. The arrangement according to claim 10 , wherein the grounding ring is connected in a relatively rotationally fixed manner to the first machine element and is in bearing contact with an inside of the second machine element in the radial direction in a relatively rotatable manner.

12. The arrangement according claim 10 , wherein the sliding contacts are assigned to the second machine element with a radially outer coverage of 1 mm to 6 mm.

13. The arrangement according to claim 10 , wherein the sliding contacts are assigned to the first machine element with a radially inner coverage of 0.2 mm to 1.2 mm.

14. The arrangement according to claim 10 , wherein the grounding ring is connected to the first machine element in a force-fitting and/or form-fitting manner.

Assignees

• Freudenberg Carl Kg

Inventors

• Bantz Marlene
• Colineau Francois
• Guder Frank
• Hintenlang Guenter
• Neuberger Soeren
• Kutschera Gerhard
• Hofmann Jens

Classifications

• H02K7/003

  Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28) · CPC title

• H02K5/225

  Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132) · CPC title

• F16J15/3228

  formed by deforming a flat ring · CPC title

• F16J15/164

  the sealing action depending on movements; pressure difference, temperature or presence of leaking fluid · CPC title

• H01R39/20

  characterised by the material thereof · CPC title