Coaxial connector with inhibited ingress and improved grounding

• US 10,312,629 B2
• Filed: 01/29/2018
• Issued: 06/04/2019
• Est. Priority Date: 04/13/2010
• Status: Active Grant

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: Corning Optical Communications RF, LLC (Corning Incorporated)
• Inventors: Burris, Donald Andrew, Lutz, William Bernard
• Primary Examiner(s): Vu, Hien D
• Application Number:
  US15/882,456
• Publication Number:
  US 20180166822A1
• Time in Patent Office: 491 Days
• Field of Search: 439578, 439583-585, 439322
• 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 13/5205 Sealing means between cable and housing, e.g. grommet H01R13/5221 takes precedence
• CPC Class Codes: H01R 13/59 Threaded ferrule or bolt operating in a direction parallel to the cable or wire
• CPC Class Codes: H01R 13/622 Screw-ring or screw-casing H01R13/623 takes precedence
• CPC Class Codes: H01R 13/631 for engagement only
• CPC Class Codes: H01R 13/6471 by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
• CPC Class Codes: H01R 13/6584 formed by conductive elastomeric members, e.g. flat gaskets or O-rings
• CPC Class Codes: H01R 13/6593 the shield being composed of different pieces
• CPC Class Codes: H01R 24/38 having concentrically or coaxially arranged contacts
• CPC Class Codes: H01R 24/40 specially adapted for high frequency
• CPC Class Codes: H01R 4/304 having means for improving contact

Abstract

A coaxial connector includes a body, a post, a coupling nut, and a sealing member. The sealing member is axially compressed between a rear end facing surface of the coupling nut and a front end facing surface of the hollow body in order to facilitate improved grounding and RF shielding characteristics.

Claims

1. A coaxial connector for coupling an end of a coaxial cable to a terminal, the coaxial connector comprising:

a hollow body comprising a front end, a front end facing surface, a rear end, and an internal surface extending between the front end and the rear end, the internal surface defining a longitudinal opening;

a tubular post disposed at least partially within the longitudinal opening of the hollow body, the tubular post comprising a front end, a rear end, and a front end flange;

a coupling nut having a front end, a rear end, a radially inward directed collar, and a rearward extending annular portion to the rear of the radially inward directed collar, wherein the radially inward directed collar of the coupling nut comprises a rear end facing surface that opposes the front end facing surface of the hollow body, and the radially inward directed collar rotationally engages a rear end facing surface of the front end flange of the tubular post; and

a sealing member disposed in an annular space defined by internal features of the coupling nut and the hollow body, between the rear end facing surface of the radially inward directed collar and a front end facing surface of the hollow body,

wherein the sealing member is axially compressed by the rear end facing surface of the radially inward directed collar and the front end facing surface of the hollow body to axially pre-load the sealing member,

an outer diameter of the sealing member does not contact an inner surface of the rearward extending annular portion of the coupling nut, and

an annular gap extends between the outer diameter of the sealing member and the inner surface of the rearward extending annular portion of the coupling nut to allow the sealing member to flex radially outwardly as it is being compressed axially;

wherein the flange of the tubular post comprises a plurality of contact points on an outer surface and at least a portion of an outer surface of the contact points contacts an inner surface of the coupling nut.

2. The coaxial connector of claim 1, wherein the sealing member comprises an O-ring.

3. The coaxial connector of claim 1, wherein the front end facing surface of the hollow body has a larger outer diameter than an outer diameter of the sealing member.

4. The coaxial connector of claim 1, wherein the sealing member has an outer diameter that is larger than an outer diameter of the flange of the post.

5. The coaxial connector of claim 1, wherein a circular aperture in the rearward extending annular portion of the coupling nut and a portion of the hollow body that is circumferentially surrounded by the rearward extending annular portion of the coupling nut each have an outer diameter that is greater than the outer diameter of the flange of the post.

6. The coaxial connector of claim 1, wherein the flange of the tubular post comprises a plurality of contact points on an outer surface and at least a portion of an outer surface of the contact points contacts an inner surface of the coupling nut.

7. The coaxial connector of claim 1, wherein an inner surface of the sealing member contacts the hollow body.

8. The coaxial connector of claim 1, wherein an inner surface of the sealing member contacts the tubular post.

9. The coaxial connector of claim 1, wherein the front end of the coupling nut is biased radially inwardly and the coupling nut comprises a plurality of slots extending from the front end of the coupling nut between an inner and an outer surface of the front end of the coupling nut.