Connector for semi-rigid coaxial cable

• US 4,408,821 A
• Filed: 10/05/1981
• Issued: 10/11/1983
• Est. Priority Date: 07/09/1979
• Status: Expired due to Term

• Current Assignee: AMP Limited
• Original Assignee: AMP Limited
• Inventors: Forney, Edgar W. Jr.
• Primary Examiner(s): MCGLYNN, JOSEPH
• Application Number:
  US06/308,760
• Time in Patent Office: 736 Days
• Field of Search: 339/89 C, 339/95 R, 339/97 C, 339/177 R, 339/177 E, 339/223 R, 339/223 S, 339/258 A, 339/258 P, 339/258 RR, 339/276 R, 339/276 T
• US Class Current: 439/387
• CPC Class Codes: H01R 9/05 for coaxial cables

Abstract

An electrical connector is disclosed for terminating semi-rigid coaxial cable, and comprises a grip ring having a continuous rearward end with multiple spline fingers extending forwardly therefrom and grooves on its inner surface, and a bored tubular shell member having a contoured internal diameter to accept the cable and the grip ring and grooves extending along an outer part of the bore of the shell member. The cable is drawn through the grip ring and the shell member, and as the grip ring is press inserted into a rearward end of the shell member, the spline fingers resiliently deflect inwardly along the shell member contour, and embed into the outer semi-rigid cable sheath to establish electrical contact therewith and the grooved bore score the outside surface of the grip ring during its movement into engagement with the cable sheath which causes the grooves of the grip ring to score the cable sheath, thereby providing antitorque connection therebetween.

Claims

1. An electrical connector for terminating semi-rigid coaxial cable, comprising:

a bored tubular shell member having rearward bore means of relatively large inner diameter inwardly contoured toward forward bore means having a relatively smaller inner diameter dimensioned to receive said cable therethrough;

coupling means on said tubular member;

bored gripping means having a rearward collar portion dimensioned to closely receive said cable therethrough, and having a plurality of spline fingers extending forward from the periphery of said collar portion defining therebetween a profiled opening of a dimension substantially equal said cable diameter, and grooves extending along an inside surface of said gripping means, said gripping means being rearwardly disposed of said tubular member, whereby,

upon moving said gripping means forwardly into said rearward bore means, said spline fingers are resiliently deflected inwardly along said contour to embed into an outer conductive layer of said cable and said grooves engage the outer conductive layer of the cable.

2. A connector plug as set forth in claim 1, further comprising gasket means in peripheral engagement with said tubular shell member for sealing the interface of said plug.

3. A connector plug as set forth in claim 1, said tubular shell member having an outwardly directed external annular flange, and said coupling means comprising a nut having rearward flange means in engagement against said shell member flange.

4. A connector plug as set forth in claim 1, including a center contact means comprising a forward length of said cable center conductor adapted to project forward a distance free of said outer conductive layer, and free of an intermediate dielectric layer of said cable disposed between said outer layer and said inner conductor.

5. A connector plug as set forth in claim 1, said spline fingers each being tapered to a point.

6. A connector plug as set forth in claim 1, said tubular shell member having longitudinal grooves within rearward walls defining said rearward bore means, said grooves engaging said gripping means collar portion for resisting rotational motion of said gripping means within said tubular shell member.

7. A connector plug as set forth in claim 1, said gripping means having an outwardly directed annular flange at a rearward end in abutting engagement against a rearward end of said tubular shell member.

8. A connector plug as set forth in claim 1, said center contact means comprising a terminal member affixed to a forward end of said cable center conductor.

9. A connector plug as set forth in claim 8, further comprising a dielectric insert having a bore therethrough, said forward bore means receiving said insert therein with said terminal member positioned within said insert bore.

10. An electrical connector for terminating semi-rigid coaxial cable, comprising:

a bored tubular shell member having rearward bore means of relative large inner diameter inwardly contoured toward forward bore means having a relatively smaller inner diameter dimensioned to receive said cable therethough, and said shell member having longitudinally grooved wall means defining said rearward bore means;

coupling means on said tubular member;

bored gripping means having a rearward collar portion dimensioned to closely receive said cable therethrough and having an outwardly directed annular flange at a rearward end, and said gripping means having a plurality of tapered spline fingers extending forward from the periphery of said collar portion defining therebetween a profiled opening of a dimension substantially equal said cable diameter, and grooves extending along an inner surface of said gripping means, said gripping means being rearwardly disposed of said tubular member, whereby,

upon moving said gripping means forwardly into said rearward bore means with said gripping means flange abutting a rearward end of said tubular member, said spline fingers are resiliently deflected inwardly along said contour to embed into an outer conductive layer of said cable, said grooved wall means engaging said gripping means collar portion and said grooves engaging the cable to resist rotational movement of said gripping means within said tubular member.