US3034090A - Shielded wire connector - Google Patents

Description

M y 1962 R. J. NOSCHESE 3,034,090

SHIELDED WIRE CONNECTOR Filed Oct. 18, 1957 IN VENTOR.

ATTOP/VEY United States Patent 3,034,090 SHIELDED WIRE CONNECTOR Rocco J. Noschese, Nor-walk, Coma, assiguor to Burndy Corporation, a corporation of New York Filed Oct. 18, 1957, Ser. No. 691,010 Claims. (Cl. 339-61) My invention relates to electrical connectors and, more particularly, to electrical connectors in which a coaxial or shielded wire conductor is coupled to a panel or patchboard through which an electrical connection is made.

It is highly desirable that apparatus utilizing inputs of electrical and magnetic waves of high frequency be coupled with the same facility with which connections of lower frequency apparatus can be accomplished. However, the very nature of the energy used by high frequency apparatus requires a high quality transmission line such as coaxial or shielded wire conductors to be utilized. For example, in the demonstration of high fidelity audio components it is often desirable to be able to interconnect a great plurality of component apparatus in a large num; ber of combinations through the use of coaxial conductors. In the past, electrical connections for coaxial cable have been extremely complicated to establish, thus hindering the demonstration of such equipment.

Most usually, such coaxial or shielded wire conductors were terminated by connections which have required soldering the braid or outer conductor and the inner conductor elements to a terminal connector. The terminal connectors which were attached to the cable by soldering were then mated to receptacles or sockets in order to es tablish the electrical connection. The soldering of these terminal parts involved the handlingof very small parts under awkward conditions, causing the attachment of a single cable terminal to be both tedious and time consuming. r

In order to overcome some of the disadvantages of the above described connections, jumper Wires were sometimes utilized to form a common grounding connection for all the cable terminals. These jumper wires joined each braided conductor to the next braided conductor in series and connected the last braided wire to the panel or patchboard in order to transmit the ground potential through the panel.

In order to overcome the' objection of soldering components, solderless coaxial connectors were developed in which wedge shaped components were utilized to make mechanical and electrical connection between the outer conductor and the terminal of the cable. Such connectors, utilizing wedge shaped elements to force fit conductor portions, have not proven entirely satisfactory since the operator or user of the connector can break the connection by applying a tension between the cable end and the terminal, thus the assurance of always establishing a good connection and maintaining it has bee lacking.

There is also known a connector for joining coaxial cable or shielded wire connections to a panelin which the inner and outer conductors were joined to the panel connector and which utilized a tapered pin for terminating the inner conductor of the cable. The tapered pin was mechanically and electrically crimped to the inner conductor and an inner sleeve formed of a relatively hard metal was inserted beneath the outer conductor and an 3,034,090 Patented May 8, 19 62 ice outer ring of a softer metal was inserted over the outer conductor and crimped thereto. An outer sleeve was electrically connected'to the outer ring and provided electrical contact making means for connecting the outer conductor of the cable to the outer connection panel, while the tapered pin'was inserted into the inner connection of the panel.

While the above described panel connection is satisfactory for'many purposes we have found that the usefulness of such a cable termination can be greatly improved by providing means by which the tapered pin can be easily force fitted into the panel connection. In addition, my invention provides for the use of a U-shaped outer sleeve which may be snapped over the outer sleeve of the pa'nel connection. 7 f

One of the objects of my invention, therefore, is to provide a coaxialcable or shielded wire connection that is simple to make, easy toinstall, and provides for the force fitting ofthe tapered pin member to the panel socket.

Anothervobject of my invention is to provide a coaxial cable or shielded wire connection in which a minimum number of parts are used.

One of the features of my invention is the provision of a connector for joining coaxial cable or shielded wire connections to .a panel in which the inner and outer conductors are joined to the panel connector and which utilizes a tapered pin for terminating the inner conductor. The tapered pin is mechanically and electrically crimped to the inner conductor and an inner sleeve formed of an insulating material is located beneath the outer conductor. The outer sleeve is U-shaped and is snap fitted over the outer socket member.

The above mentioned and other features and objects of my invention will become more apparent by reference to the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is an exploded perspective view partly in section of one form of the panel connection of my invention;

FIG. 2 is a perspective view partly in section of the connection shown in FIG. 1; and,

FIG. 3 is a cross-section view of the outer sleeve of the cable termination and the outer socket member in op erative relationship.

Referring to FIGS. 1 and 2 of the drawing a panel socket members 4 and 5 are suitably secured to the panel Wall 3, preferably in a manner which makes the mount"- ing leakproof. Outer socket member 5 extends beyond the panel wall 3 and terminates in an external portion 7 which is utilized to engage the cable termination 1. It is, of course,.understood that a plurality of panel sockets 2 can be located in the panel wall 3 to provide a multiplicity of socket connections.

3 r The cable termination 1 comprises the tapered pin shaped member 8 which is force fitted into the inner socket member 4 by the use of an insertion impacting tool not shown. The insertion impacting tool utilizes i the shoulder 9 to apply force to the tapered pin 8. The inner conductor is located in the conductor receiving 15'is exposed and trimmed back of the tapered pin member 8. A supporting ferrule or inner sleeve 16, composed of a relatively hard metal, is mounted or slid under the outerconductor 14 and over the inner conductor insu lation 13. A malleable sleeve 17 is crimped as shown at 18 over the outer conductor 14 to thesupporting ferrule 16, thus the inner conductor of the cable is mechanically crimped to the taper-pin 8 and theouter conductor '14 is mechanically crimped to the sleeve 16. An inner sleeve 19 composed of an insulating material mounted or slid between the outer conductor 14 and the tapered pin 8 to maintain'the spaced relationship. 'The insulating sleeve 19 may be longitudinally split to provide for easy placement. 7

Referring to FIG. 3 it is seen that the outer sleeve 19 is Uashaped and is bent along its edges 2% to provide a spring-like action. *The 'outer 'sleeve. 19!;is moved into place and mates with the outer socket member'S making "T mechanical and electrical connection thereto :The diameter of the outer sleeve 19 is made slightly smaller than the diameter of the end 7 of the outer socket member 5. This is done to provide an inward gripping pressure when the sleeve 19 is mated 'with the U-shaped' outer socket member 7-. After connection is established r the cable'terminal 1 may be rotated to close the connection.

While I have described above the principles of my inventionin connection with specific apparatus, it is to be clearly understood that this" description is made only 4, ing of said U shaped portion to said outer socket, and concurrent disposing of said sleeve and said innercontact pin in a coaxial relationship.

2. The coaxial connection of claim 1 which further includes a flexible insulating sleeve disposed between said contact pin and said outer sleeve and forward of said inner supporting ring to maintain said pin and sleeve in spaced apart insulated relationship.

3. The coaxial connection of claim 1 wherein said outer socket is U shaped inscross-section.

4. The coaxial connection of claim 1 wherein said U shaped outer sleeve portion has outwardly bent edges.

5. The method of making a coaxial connection between a coaxial connector having an inner and an outer coaxial contact and an end of a coaxial cable having a flexible inneriand an outer coaxial conductor comprising: (1) removing a. length from the end of the outer conductor to expose a like length of-inner conductor so that the remaining cable has the ends of its inner and outer conductors axially spaced apart, (2) mechanically and electrically connecting an inner contact to said end of said inner conductor; '(3) mechanically and electrically connecting one end of an outer sleeve to said end a of said outer conductor; (4) bending said'exposed length bf inner conductor and mechanically and electrically connecting said cable inner contact to said connector inner contact; (5) rebending said exposed length of inner conductor to its original attitude and'mechanically and electrically connecting the other end'of said outer sleeve to said connector outer contact.

6. A coaxial connection comprising a coaxial cable including a flexible, insulated, inner conductor and an outer conductor coaxialtherewith, a female connector including a'rigid, tapered inner conductive socket having a solid annulus and an outer conductive socket coaxial with and insulated from said inner socket; and a male connector including an inner, rigid, tapered contact conductive pin, having an impact tool receiving means, mechanically and electrically connected to an end of said flexible, insulated, inner conductor, and in sohd impacted engagement with said tapered inner socket; the associated end of said outer conductor being axially spaced by way'of example and not as a limitation to the scope of my invention as set forth in the objects thereof and in the accompanying claims.

a I claim: 7

1. Acoaxial connection comprising: a coaxial cable including a flexible, insulated, inner conductor and an 'outer conductor coaxial therewith, a female connector including an inner conductive socket and an outer conductive socket coaxial with and insulated from said inner socket;'and a male connector including an inner contact conductive pin mechanically and electrically connected 'to an end'of said flexible, insulated, inner conductor and in direct and independent mechanical and electrical connection with saidinner socket; the associated end of said outer conductor being axially spaced from saidinner contact pin; an inner supporting ring positioned over said 7 flexible insulated inner conductor and under said end of said outenconductor; an outer sleeve conductive contact having a U shaped in cross-section portion proximate .to said inner contact pin, and a portion remote from said contact pin disposed coaxially and adjacent to said inand said outer'conductor'thereby being in electrical confrom said tapered contact pin;.a rigid, inner supporting ring positioned over saidzflexible, insulated, inner conductor and under said end of said outer conductor; an

outer sleeve conductive contact having a U shaped in cross-section portion proximate to said inner, tapered contact pinpand a portion remote from said contact pin disposed coaxially-and adjacent to said rigid, inner supporting ring and deformed thereabout to mechanicallyv secure said outer conductor between said deformed sleeve portion and said rigid, inner supporting ring, said sleeve and said outer conductor thereby being in electrical connection; said inner tapered contact pin and said outer. sleeve thus being mechanically interconnected by V a length of said flexible,--insulated, inner conductor;

' whereby said inner taperedcontact pin andadjacent pornection; saidinner contact. pin and said outer sleeve 7' thus being mechanically interconnected by a length of.

said flexible, insulated, inner conductor; whereby said relationship to said outersleeve to permit saidinner 'contact'pin to be mechanically. and electrically connected to said inner socket and subsequent electrical connectpermit access of an impact tool to said impact tool receiving means on said inner tapered contact'pin for impacting said pin into said inner socket and subsequent electrical connecting of saidU shaped portion to said outer socket, and concurrent disposing of said sleeve and said inner contact pin in :a coaxial relationship.

7. The coaxial connection of claim 1 wherein said impact tool receiving means is a shoulder on said contact 8. The coaxial connection of claim 6 which further includes a flexible insulating sleeve disposed between said tapered pin contact and said outer sleeve contact and forward of said inner supporting ring to maintain fsaid contacts in spaced apart insulated relationship.

9. The coaxial connection of claim 6 wherein said outer socket contact is U shaped in cross section.

ant-

10. The coaxial connection of claim 6 wherein said 2,762,025 U shaped outer sleeve portion has outwardly bent edges. 2,798,113 2,814,787 References Cited in the file of this patent 1 39 595 UNITED STATES lATENTS 5 2,941,023

950,899 Dods Mar. 1, 1910 985,241 Andersen Feb. 28, 1911 2,540,012 Salati Jan. 30, 1951 18,630 2,719,279 Muckler Sept. 27, 1955 459,776 2,761,110 Edlen et al Aug. 28, 1956 10 695,439

6 Melcher Sept. 4, 1956 Koller et al. July 2, 1957 Jessup Nov. 26, 1957 Felts et a1. June 17, 1958 Edlen et al. June 14, 1960 FOREIGN PATENTS Great Britain July 8, 1899 Italy Oct. 4, 1950 Great Britain Aug. 12, 1953

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