# US 4,398,783 A · Coaxial cable connector

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- Number: US 4,398,783 A
- Document ID: US4398783A
- Status: Granted
- Kind: A
- Application number: 06/275,889
- Filed: 1981-06-22
- Granted: 1983-08-16
- Earliest claimed: 1981-06-22
- Assignees: International Telephone and Telegraph Corporation
- Inventors: Michael J. Kelly
- Web page: https://patentgrep.com/patent/US4398783A

## CPC

- H01R 12/00: Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures (printed connections to, or between, printed circuits H05K1/11)
- H01R 13/6585: Shielding material individually surrounding or interposed between mutually spaced contacts
- H01R 13/114: {co-operating with pins or blades having a square transverse section}
- H01R 13/506: assembled by snap action of the parts
- Y10S 439/901: Connector hood or shell
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A connector is disclosed for coupling a coaxial cable to terminal pins on a printed circuit board to provide EMI/RFI shielding for a signal pin on the board. The insulator of the connector has a center contact cavity for receiving a socket contact which is connected to the center conductor of the coaxial cable. Longitudinal grooves in the outer surface of the insulator form outer contact cavities for ground terminal pins on the PC board. Integral resilient contact fingers formed on the shell extend inwardly into the outer cavities to engage the ground pins.

## Claims

### Claim 1

An electrical connector for connecting a coaxial cable to a plurality of terminal pins including a signal pin and a plurality of ground pins spaced outwardly from said signal pin in a predetermined pattern, said coaxial cable including inner and outer conductors, comprising:
a hollow metal shell containing an insulator having a front and a rear, said shell being adapted to be connected to said outer conductor of said cable;
a plurality of longitudinally extending grooves in the surface of said insulator opening at said front and arranged in a pattern corresponding to said predetermined pattern whereby said grooves may receive said ground pins;
the wall of said shell having contact elements thereon facing one of said grooves for engaging a ground pin;
a contact cavity in the interior of said insulator extending from said front to said rear and positioned to receive said signal pin; and
a contact mounted in said cavity adapted to be connected to said inner conductor of said cable.

### Claim 2 (depends on 1)

An electrical connector as set forth in claim 1 wherein: said contact elements are dimples formed in the wall of said shell and extending into said grooves.

### Claim 3 (depends on 1)

An electrical connector as set forth in claim 1 wherein:
said contact elements are resilient fingers formed from forward extensions of said shell which are bent rearwardly into said grooves.

### Claim 4 (depends on 1)

An electrical connector as set forth in claim 1 wherein:
said insulator embodies a slot in its outer surface extending transversely to the longitudinal axis of said insulator; and
a dimple on said shell extends into said slot to retain said insulator in said shell.

### Claim 5 (depends on 1)

An electrical connector as set forth in claim 1 including:
a rear tubular extension on said shell aligned with said contact cavity; and
a crimp sleeve surrounding said tubular extension for attaching said outer conductor of said cable to said extension.

### Claim 6 (depends on 1)

An electrical connector as set forth in claim 1 including:
cooperating means on said contact and contact cavity for releasably retaining said contact in said cavity, said contact being removable from the rear of said cavity.

### Claim 7 (depends on 1)

An electrical connector as set forth in claim 1 wherein:
the wall of said shell is devoid of any openings therethrough.

### Claim 8

An electrical connector-coaxial cable assembly for connecting the coaxial cable to a plurality of terminal pins including a signal pin and a plurality of ground pins spaced outwardly from said signal pin in a predetermined pattern, comprising:
a coaxial cable including inner and outer conductors;
a hollow metal shell containing an insulator having a front and a rear, said shell being connected to said outer conductor of said cable;
a plurality of longitudinally extending grooves in the surface of said insulator opening at said front and arranged in a pattern corresponding to said predetermined pattern whereby said grooves may receive said ground pins;
the wall of said shell having integral contact elements formed thereon each extending into one of said grooves for engaging a ground pin;
a contact cavity in the interior of said insulator extending from said front to said rear and positioned to receive said signal pin; and
a contact mounted in said cavity connected to said inner conductor of said cable.

### Claim 9 (depends on 8)

An electrical connector assembly as set forth in claim 8 including:
a rear tubular extension on said shell aligned with said contact cavity;
said outer conductor of said cable extending over said extension; and
a sleeve crimped around said outer conductor and extension attaching said outer conductor to said shell.