Electrical connector with grounding member

• US 20070026734A1
• Filed: 10/02/2006
• Published: 02/01/2007
• Est. Priority Date: 01/25/2005
• Status: Active Grant

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: Corning Gilbert Incorporated (Corning Incorporated)
• Inventors: Miller, Thomas, Kooiman, John, Lutz, William, Kisling, Brian, McDade, William, Burris, Donald, Bence, Bruce, Chuan, Lee
• Granted Patent: US 7,479,035 B2
• Time in Patent Office: Days
• US Class Current: 439/583
• CPC Class Codes: H01R 13/5202 Sealing means between parts of housing or between housing part and a wall, e.g. sealing rings
• CPC Class Codes: H01R 13/5216 characterised by the sealing material, e.g. gels or resins
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/44 comprising impedance matching means
• CPC Class Codes: H01R 43/20 for assembling or disassembling contact members with insulating base, case or sleeve
• CPC Class Codes: H01R 9/05 for coaxial cables

Abstract

A coaxial cable connector includes tubular post, a coupler secured over an end of the tubular post for securing the connector to an appliance, and an outer body secured to the tubular post. An electrical grounding path is maintained between the coupler and the tubular post whether or not the coupler is tightly fastened to the appliance. The electrical grounding path is provided by a resilient, electrically-conductive grounding member disposed between the tubular post and the coupler. Alternatively, the connector includes conductive grease at a point where mating portions of the tubular post and coupler have closely matching dimensions.

Claims

1. A coaxial cable connector for coupling a coaxial cable to an equipment port, the coaxial cable including a center conductor surrounded by a dielectric material, the dielectric material being surrounded by an outer conductor, the coaxial cable connector comprising in combination:

a. a tubular post having a first end adapted to be inserted into the prepared end of the coaxial cable between the dielectric material and the outer conductor, and having a second end opposite the first end thereof;

b. a coupler having a first end rotatably secured over the second end of the tubular post, and having an opposing second end, the coupler including a central bore extending therethrough, a portion of the central bore proximate the second end of the coupler being adapted for engaging the equipment port;

c. a body member secured to the tubular post and extending about the first end of the tubular post for receiving the outer conductor of the coaxial cable; and

d. a resilient, electrically-conductive grounding member disposed between the tubular post and the coupler, the grounding member contacting both the tubular post and the coupler for providing an electrically-conductive path therebetween.

2. The coaxial cable connector recited by claim 1 wherein said grounding member is arcuately shaped to extend around the tubular post over at least 225°

.

3. The coaxial cable connector recited by claim 2 wherein said grounding member is configured to form a broken ring.

4. The coaxial cable connector recited by claim 2 wherein said grounding member is formed from metal wire.

5. The coaxial cable connector recited by claim 2 wherein the central bore of the coupler includes an annular recess proximate to the first end of the coupler, and wherein at least portions of said grounding member are disposed within the annular recess.

6. The coaxial cable connector recited by claim 5 wherein the tubular post includes an enlarged shoulder at the second end thereof extending inside the coupler, and wherein the annular recess and said grounding member surround the enlarged shoulder of the tubular post when the coaxial cable connector is assembled onto the prepared end of the coaxial cable.

7. The coaxial cable connector recited by claim 1 wherein said grounding member is generally circular.

8. The coaxial cable connector recited by claim 7 wherein said grounding member has a plurality of projections extending radially outwardly therefrom for engaging the coupler.

9. The coaxial cable connector recited by claim 7 wherein said grounding member has a plurality of projections extending radially inwardly therefrom for engaging the tubular post.

10. The coaxial cable connector recited by claim 1 wherein the tubular post includes an enlarged shoulder at the second end thereof extending inside the coupler, the enlarged shoulder including a first radial face that faces the first end of the tubular post, the coupler including a radially inwardly directed flange proximate the first end thereof directed inwardly toward the tubular post, the inwardly directed flange including a second radial face that faces the second end of the coupler, said grounding member being disposed between the first radial face and the second radial face for electrically coupling the tubular post to the coupler.

11. The coaxial cable connector recited by claim 10 wherein the grounding member includes a central, generally circular body member disposed generally within a plane, the grounding member including a plurality of resilient spring fingers extending out of said plane and being compressed between the first radial face of the tubular post and the second radial face of the coupler.

12. The coaxial cable connector recited by claim 11 wherein said plurality of spring fingers includes at least a first spring finger and a second spring finger, and wherein said first and second spring fingers extend out of said plane in opposing directions.

13. The coaxial cable connector recited by claim 1 wherein the grounding member includes:

a. a circumferential metallic band extending between first and second opposing ends, the band having a generally circular shape, and approximating a section of a hollow cylinder, the first and second ends of the band being disposed generally proximate to each other and being directed generally toward one another, the band having first and second opposing side edges extending along its length;

b. a first generally radial wall extending from the first side edge of the band in a first radial direction; and

c. a second generally radial wall extending from the second side edge of the band generally in said first radial direction;

wherein the band contacts a first one of the group of members that consists of the coupler and the tubular post, and wherein the first and second radial walls contact the second of the group of members that consists of the coupler and the tubular post.

14. The coaxial cable connector recited by claim 13 wherein the band has a plurality of apertures formed therein.

15. The coaxial cable connector recited by claim 13 wherein the band has dimples formed therein, the dimples extending away from the band in a second radial direction opposite to said first radial direction.

16. The coaxial cable connector recited by claim 1 wherein the grounding member includes:

a. a metallic band extending along its length between first and second opposing ends, and extending along its width between first and second side edges, the band being formed along its length into a generally circular shape, the band being formed along its width into a generally concave shape with the side edges projecting generally in a first radial direction, the first and second ends of the band being disposed generally proximate to each other and being directed generally toward one another; and

b. a plurality of projections extending from the band in a second radial direction opposite to the first radial direction;

wherein the first and second side edges of the band contact a first one of the group of members that includes the coupler and the tubular post, and wherein the plurality of projections contact the second of the group of members that includes the coupler and the tubular post.

17. The coaxial cable connector recited by claim 16 wherein the band has a plurality of apertures formed therein to create the plurality of projections.

18. The coaxial cable connector recited by claim 16 wherein the plurality of projections is dimples.

19. The coaxial cable connector recited by claim 1 wherein the grounding member includes:

a. a circumferential metallic band extending between first and second opposing ends, the band having a generally circular shape, and approximating a section of a hollow cylinder, the first and second ends of the band being disposed generally proximate to each other and being directed generally toward one another, the band having first and second opposing side edges extending along its length, the band generally defining a section of a cylindrical surface; and

b. a plurality of projections extending from at least one of the first and second side edges of the band, the plurality of projections extending away from the cylindrical surface defined by the band;

wherein the band contacts a first one of the group of members that includes the coupler and the tubular post, and wherein the plurality of projections contact the second of the group of members that includes the coupler and the tubular post.

20. The coaxial cable connector recited by claim 19 wherein the plurality of projections are formed by cutting slots into the band from one of the first and second side edges of the band, and by displacing portions of the band lying between adjacent slots.

21. The coaxial cable connector recited by claim 2 further including a sealing ring disposed between the first end of the coupler and the body member for forming a seal therebetween.

22. The coaxial cable connector recited by claim 2 wherein said grounding member is a C-shaped metal clip.

23. The coaxial cable connector recited by claim 22 wherein said C-shaped metal clip has an arcuate curvature that is non-circular to maximize contact with both the coupler and the tubular post.

24. The coaxial cable connector recited by claim 22 wherein said C-shaped metal clip is made of wire.

25. A coaxial cable connector for coupling a coaxial cable to an equipment port, the coaxial cable including a center conductor surrounded by a dielectric material, the dielectric material being surrounded by an outer conductor, the coaxial cable connector comprising in combination:

a. a tubular post having a first end adapted to be inserted into the prepared end of the coaxial cable between the dielectric material and the outer conductor, and having a second end opposite the first end thereof, the tubular post including a grounding path portion having an outer surface of a predetermined outer diameter;

b. a coupler having a first end rotatably secured over the second end of the tubular post, and having an opposing second end, the coupler including a central bore extending therethrough, a portion of the central bore proximate the second end of the coupler being adapted for engaging the equipment port, the coupler including a grounding path portion having an inner surface of a predetermined inner diameter, the grounding path portion of the coupler being disposed adjacent to the grounding path portion of the tubular post when the coaxial cable connector is installed onto the coaxial cable, and wherein the predetermined inner diameter closely approximates the predetermined outer diameter while permitting rotation of the coupler relative to the tubular post;

c. a body member secured to the tubular post and extending about the first end of the tubular post for receiving the outer conductor of the coaxial cable; and

d. conductive grease disposed proximate to the respective grounding path portions of the tubular post and coupler for electrically coupling such grounding path portions.