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Publication numberUS3509513 A
Publication typeGrant
Publication dateApr 28, 1970
Filing dateMar 27, 1968
Priority dateMar 27, 1968
Also published asDE1909534A1, DE1909534B2
Publication numberUS 3509513 A, US 3509513A, US-A-3509513, US3509513 A, US3509513A
InventorsRussin Andrew
Original AssigneeIbm
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cables connecting assembly
US 3509513 A
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Description  (OCR text may contain errors)

April 28, 1970 A. RUSSIN CABLES CONNECTING ASSEMBLY Filed March 27, 1968 INVENTOR ANDREW RUSSIN AGENT United States Patent U.S. Cl. 339-44 1 Claim ABSTRACT OF THE DISCLOSURE An electrical connector for cables of the shielded signal wire transmission line type having a centralconductor and an outer conductor of the like. The connector device is particularly adapted to accommodate a plurality of coaxial cables and to provide connection with printed circuit cards, boards and the like. The connector device comprises a plastic housing of dielectric material holding a common ground conductor element and a plurality of signal conductor elements. There is provision for enabling the connection of the cables outer shield wire conductor with the common ground element and the cables central conductor signal wires with the signal conductor elements. The connector device is equipped with cables strain relief means.

BACKGROUND OF THE INVENTION This invention relates to electrical connectors for signal wire transmission lines having a central conductor and an outer conductor. The latter is generally of braided wire forming a tube which surrounds the central conductor and from which it is normally separated by a flexible tube of insulating material which maintains the central and outer conductors in a concentric relationship.

Connectors for coaxial transmission lines provide a means by which the lines are terminated and the inner and outer conductors may be permanently or detachably connected to connector elements which transmit the signals from a source to a receiving means.

It is important that such connectors be constructed so as to minimize losses or irregularities in the transmission of energy from the source to the receiver means. They must also be constructed so that their electrical performance characteristics are not affected by wear or by strain resulting from the handling of the coaxial transmission lines, as when equipment to which they are connected is moved from place to place.

It is a principal object of the present invention to provide a novel connector for the terminal ends of coaxial transmission cables which is rugged and minimizes losses or irregularities in the transmission of energy from the transmission cable to the connecting device, or vice versa.

Another important object of the invention is the provision of a rugged and reliable connector assembly easily adaptable to wiring of printed circuit cards.

Another object of the invention is the provision of a connector assembly which is producible within a reasonable range of manufacturing tolerances.

SUMMARY OF THE INVENTION In a preferred embodiment of the invention, the objects are achieved by a coaxial cable connector assembly comprising a molded connector block of dielectric material and providing support means for a common ground element and a plurality of signal conductor elements adapted for mounting on a printed circuit board, card or the like. The connector block has provision to receive the ends of a plurality of coaxial cables with the shielded or outer conductors of each cable being connectable to the ground element and the inner or signal conductor element being ice ' connectable to the individual signal connector elements.

The block includes a serrated portion against which the cables are held by means of a retaining pin to provide a strain relief function.

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of a preferred embodiment of the invention, as illustrated in the accompanying drawing.

BRIEF DESCRIPTION OF THE DRAWING The single figure is a perspective view of an embodiment of a coaxial cables connecting assembly, according to the present invention, including a partial sectional view showing the manner in which the coaxial cables are attached and held within the assembly.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawing, there is shown in accordance with the present invention an improved coaxial cables connecting assembly. The assembly comprises a molded plastic block 10 which functions to support a plurality of individual signal connector elements 11, a common ground connector element 12 with connective positions corresponding to the individual signal connector elements 11 positions. The signal connector elements 11 and the ground connector element 12 are of a form suitable for fabrication by sheet metal stamping techniques from a metal having good electrical characteristics. The molding of the block is in accordance with known manufacturing techniques and the completed product provides a block which is simple and rugged. The connector assembly is adapted for attachment to a printed circuit board 20, or the like.

A typical coaxial cable 13 comprises a concentric arrangement of a central signal conductor element 14, a layer of insulating material 15, a braided ground conductor 16, and an outer layer of insulation 17 which surrounds the braid 16.

Prior to connecting the coaxial cables with the connector elements supported by the block 10, it is essential to strip the layers surrounding the inner conductor 14 by predetermined amounts to enable proper connections as indicated by the drawing. The coaxial cable 13 is then inserted into the block 10 so that the inner conductor 14 passes through an aperture in an individual signal element 11. The inner conductor 14 is then bent in an upward direction so as to reside against the signal conductive element 11. The inner conductor 14 may then be soldered to the conductive element 11 or crimped thereto by bending a tab 11a so as to forcefully hold the inner conductor 14. During a coaxial cable insertion operation, the braided conductor 16 will pass through an aperture in the ground signal connector element 12. Connecting the braided conductor 16 with the ground signal connector 12 may be accomplished by well-known soldering techniques.

After electrical connections have been made for all of the coaxial cables, the. cables are individually placed into individual cable receiving cavities 10a and against the serrated portion 10b of the molded block 10 and held in this position by means of the roll pin 18. This arrangement provides a strain relief for the coaxial cables 13 and their connections with the electrical connectors 11 and 12 to thereby preserve the connections from harm or deterioration by movement of the equipment or pulling of the coaxial cables 13.

After the coaxial cables 13 have been connected with the electrical connectors 11 and 12, the assembly is then ready for locating an attachment to a printed circuit board 20 or the like. The protruding portions 11b of the individual connector elements 11 and the portions 12b of the grounding connector element are adapted for insertion into and connection with a printed circuit board 20 or the like.

The coaxial cables connecting assembly herein described is particularly well adapted as an input/output signal connecting means for printed circuit board applications. The unique and novel assembly disclosed herein is particularly useful in the present-day developments of microminiaturization of circuit technology. While the description has been shown and described with reference primarily to coaxial cables, it is to be pointed out that twin lead, tri-lead cables and the like are equally adaptable for connections through the disclosed assembly.

While the invention has been particularly shown and described with reference to a preferred embodiment thereof, it will be understood by those skilled in the art that the foregoing and other changes in form and details may be made therein without departing from the spirit and scope of the invention.

What is claimed is:

1. A connector assembly for joining a plurality of coaxial cables with a printed circuit board or the like, each cable being of the type having a center conductive element surrounded by insulating material and an outer conductive element, the assembly comprising:

(a) a block of insulating material provided with:

(1) a plurality of coaxial cable receiving cavities,

each having a serrated surface therein;

(2) a pin receiving aperture in the block and further including a holding pin for holding the coaxial cables in engagement with the serrated portions of the cavities to provide a strain relief function;

4 (b) the block of insulating material holding:

(1) a common ground connector element and having a plurality of conductor receiving apertures therein, each aperture adapted to receive the conductive element of a coaxial cable and including the outer conductive element;

(2) a plurality of signal connector elements, each having a conductor receiving aperture therein and arranged in axial alignment with the apertures in the ground connector element and adapted to receive the center conductor element of the coaxial cable and for electrical and mechanical attachment therewith; and

(c) said ground and signal connector elements including projected portions adapted for mounting to a printed circuit board or the like.

7 References Cited UNITED STATES PATENTS 2,283,177 5/1942 Brainard 339-103 2,970,183 1/1961 Anderson 174-78 3,160,456 12/ 1964 OKeefe et a1. 339-92 3,179,912 4/1965 Huber et al. 339-17 3,205,295 9/1965 Davidson 174-32 3,215,975 11/1965 Kinkaid.

3,243,760 3/1966 Dupre et al. 339-153 3,264,599 8/1966 Kinkaid 339-17 RICHARD E. MOORE, Primary Examiner J. H. MCGLYNN, Assistant Examiner U.S. Cl. X.R. 339-103, 143, 177

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2283177 *Aug 2, 1940May 19, 1942Brainard Kenneth AElectrical plug connection
US2970183 *Nov 12, 1957Jan 31, 1961Burroughs CorpCable support
US3160456 *Jul 14, 1961Dec 8, 1964Amp IncCoaxial cable connecting device
US3179912 *Feb 8, 1963Apr 20, 1965Amp IncCoaxial connector for printed circuit board
US3205295 *Mar 18, 1963Sep 7, 1965Burroughs CorpElectrical connector
US3215975 *Nov 27, 1961Nov 2, 1965Amp IncConnector block assembly
US3243760 *Dec 24, 1962Mar 29, 1966Burndy CorpCoaxial cable gang connector
US3264599 *Mar 3, 1965Aug 2, 1966Amp IncConnector block assembly
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3569900 *Feb 24, 1969Mar 9, 1971IbmElectrical connector assembly
US3643201 *Feb 9, 1970Feb 15, 1972Amp IncImpedance matching microstrip connector
US3689865 *Jun 23, 1970Sep 5, 1972Texas Instruments IncConnector
US3778753 *May 5, 1972Dec 11, 1973Bunker RamoElectrical connector
US3904261 *May 10, 1971Sep 9, 1975Ncr CoElectrical cable connector
US4070084 *May 20, 1976Jan 24, 1978Burroughs CorporationControlled impedance connector
US4232929 *Jul 18, 1979Nov 11, 1980Siemens AktiengesellschaftMulti-row plug connector with a fitted shield plate
US4258969 *Nov 19, 1979Mar 31, 1981Stallard Jerrel LReversing plug connector
US4365856 *Jul 9, 1980Dec 28, 1982Hirose Electric Co., Ltd.Electric connector for coaxial ribbon cable
US4447100 *Jun 1, 1982May 8, 1984The Bendix CorporationApparatus for grounding and terminating a cable
US4536045 *Jan 11, 1983Aug 20, 1985Allied CorporationFor a flat cable
US4602831 *Aug 26, 1985Jul 29, 1986Amp IncorporatedElectrical connector and method of making same
US4648677 *May 31, 1985Mar 10, 1987Allied CorporationElectrical connector assembly and method for terminating cable
US4682840 *Apr 16, 1986Jul 28, 1987Amp IncorporatedElectrical connection and method of making same
US4972576 *Mar 12, 1990Nov 27, 1990Ncr CorporationMethod for containment and alignment of wire terminations
US4993968 *Mar 2, 1989Feb 19, 1991Precision Interconnect CorporationEconomical connector system for an array of conductors
US5482047 *Dec 5, 1994Jan 9, 1996Advanced Technology Laboratories, Inc.Termination assembly
U.S. Classification439/468, 439/579, 439/456
International ClassificationH01R13/658, H01R12/00, H01R12/22
Cooperative ClassificationH01R13/658
European ClassificationH01R13/658