Twist-on coaxial cable end connector with internal post

• US 5,393,244 A
• Filed: 01/25/1994
• Issued: 02/28/1995
• Est. Priority Date: 01/25/1994
• Status: Expired due to Fees

• Current Assignee: John Mezzalingua Associates Incorporated
• Original Assignee: John Mezzalingua Associates Incorporated
• Inventors: Szegda, Andrew
• Primary Examiner(s): Bradley, P. Austin
• Assistant Examiner(s): Elpel, Jeanne M.
• Application Number:
  US08/186,685
• Time in Patent Office: 399 Days
• Field of Search: 439/583, 439/584, 439/578, 439/393, 439/394
• US Class Current: 439/394
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/40 specially adapted for high frequency

Abstract

An end connector for connecting a coaxial cable to a port having a tubular body with front and end portions a cable attachment section associated with the rear end portion for attaching the connector to the cable, and a port attachment section associated with the front end portion for attaching the connector to the port. The cable attachment section includes an interiorly threaded portion of the tubular body. An annular post is disposed in an intermediate region between the port attachment section and the cable attachment section, and extends partially into an is spaced radially from the interiorly threaded region. The annular post is adapted for insertion into the cable and at a position in which the annular post is in electrical contact with the outer conductor and electrically isolated from the inner conductor by the dielectric insulator, with a portion of the outer conductor overlying the jacket being driven into electrical contact with the interiorly threaded region. The annular post and an innermost portion of the interiorly threaded region define an indentation region adapted to receive a portion of the cable jacket so as to centrically support the cable within the tubular body.

Claims

1. An end connector for connecting a prepared end of a coaxial cable to a port, said cable being of the type having an electrical inner conductor surrounded by and spaced radially inwardly from an electrical outer conductor by a dielectric insulator interposed therebetween, with a dielectric jacket surrounding said outer conductor, the prepared end of said cable having an exposed portion of said inner conductor protruding beyond an exposed portion of said dielectric insulator which in turn protrudes beyond an exposed portion of said outer conductor, the exposed portion of said outer conductor having been peeled back to surround an end portion of said dielectric jacket, said end connector comprising:

a tubular body having cylindrical front and rear wall portions joined by an intermediate wall portion, said front and rear wall portions respectively defining front and rear chambers leading respectively from open front and rear ends of said body to front and rear ends of a reduced diameter bore extending through said intermediate wall portion, the rear end of said bore being surrounded by a shoulder having an edge spaced radially inwardly from said rear wall portion and protruding axially into said rear chamber, said shoulder having an outer surface which is inwardly tapered and an inner surface which is outwardly tapered as the shoulder extends from said rear wall portion to said rear chamber, said open front end being configured and dimensioned to axially receive a port into an inserted position in said front chamber, and said open rear end being configured and dimensioned to axially receive the prepared end of a coaxial cable into an inserted position at which the exposed portions of said inner conductor, dielectric insulator and outer conductor are loaded respectively in said front chamber, intermediate bore, and rear chamber;

first attachment means associated with said front wall portion for securing said connector to the thus received port; and

second attachment means associated with said rear wall portion for securing said connector to the thus received prepared end of said cable, said second attachment means including an interiorly threaded segment of said rear wall portion which coacts in threaded engagement with the exposed portion of said outer conductor to urge said cable towards the front end of said connector, thereby causing the edge of said shoulder to penetrate said cable with a resulting radial expansion of the exposed portion of said outer conductor outwardly against the rear wall portion of said conductor.

2. An end connector for connecting a coaxial cable to a port, said cable having an electrical inner conductor surrounded by and spaced inwardly from an electrical outer conductor, with a dielectric insulator interposed between said inner and outer conductors, and with a dielectric jacket surrounding said outer conductor, said cable including a prepared end at which a portion of said outer conductor is folded back to overlie an outer portion of said jacket, said end connector comprising:

a tubular body having a front end portion and a rear end portion;

port attachment means associated with said front end portion for attaching said connector to said port;

cable attachment means associated with said rear end portion for attaching said connector to the prepared end of said cable, said cable attachment means including an interiorly threaded region of said tubular body; and

an annular post disposed in an intermediate region between said port attachment means and said cable attachment means, and extending partially into and spaced radially from said interiorly threaded region, said annular post having an outer surface which is inwardly tapered and an inner surface which is outwardly tapered as the post extends from said intermediate region to said interiorly threaded region, said annular post being adapted for insertion into the prepared end of said cable at a position at which said annular post is in electrical contact with said outer conductor and electrically isolated from said inner conductor by said dielectric insulator, with the portion of said outer conductor overlying said jacket being driven into contact with said interiorly threaded region.

3. The end connector of claim 2, wherein said annular post and an innermost portion of said interiorly threaded region define an indentation region adapted to receive a portion of said cable jacket so as to centrically support said cable within said tubular body.

4. The end connector of claim 2 further comprising a nonthreaded interior chamber region of said tubular body which precedes said interiorly threaded region at said rear end portion.

5. The end connector of claim 2, wherein said port attachment means comprises a split ferrule.