US3804972A - Electrical connection of coaxial cable ends - Google Patents

Electrical connection of coaxial cable ends Download PDF

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Publication number
US3804972A
US3804972A US00327491A US32749173A US3804972A US 3804972 A US3804972 A US 3804972A US 00327491 A US00327491 A US 00327491A US 32749173 A US32749173 A US 32749173A US 3804972 A US3804972 A US 3804972A
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US
United States
Prior art keywords
cable
dielectric
cable ends
connection
electrical connection
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00327491A
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English (en)
Inventor
H Gommans
J Stikkelbroeck
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US Philips Corp
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US Philips Corp
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Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
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Publication of US3804972A publication Critical patent/US3804972A/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0503—Connection between two cable ends

Definitions

  • the invention relates to an electrical connection of two coaxial cable ends each consisting of a central conductor, a solid dielectric surrounding the central conductor, a cylindrical outer conductor and a sheath, the central conductors and the outer conductors being electrically connected respectively together in a conventional manner, for example, by means of clamping connections.
  • the invention further relates to a method of manufacturing such a connection.
  • connection must be water resistant and it must be able to withstand pulling forces occuring during normal handling of the cable.
  • the electrical connection between the central conductors is stressed where the cable is subjected to pulling forces. This may give rise to unwanted alterations in the electrical behaviour of the cable. In other connections the sheath is stressed under such circumstances and may be damaged so that moisture can penetrate the cable.
  • An object of the invention is to provide a connection which can be applied without errors and with as few tools as possible by untrained personnel after some instructions, which connections may be subjected to pulling forces without unwanted alterations occurring in the electrical behaviour of the cable.
  • connection between two coaxial cable ends which satisfied this condition is characterized in that the cable ends are mechanically connected together by means of connection pieces of electrically insulating material provided with parts projecting in the direction of the central conductor, said parts being accommodated in recesses in the solid dielectrics of the respective cable ends.
  • connection pieces consist of shells of electrically insulating material which are provided on their inner side with at least two radially varying elevations engaging radially varying slots in the cable dielectric of the two cable ends. From an electrical point of view it is necessary that the impedance at the area of the connection is equal to that of the cables connected'together.
  • the shells are provided such a quantity of that part of the dielectric located between the radial slot and the cable end is radially removed that after the shells are applied the outer diameter of the shells coincides with the original outer diameter of the dielectric which was located at the area of the connection.
  • the thickness of the part removed from the cable is then equal or substantially equal to the thickness of the shells. It is achieved thereby that the diameter of the cable dielectric between the radial slots and the cable end plus the thickness of the shell at that area is equal or substantially equal to the original diameter of the cable dielectric in that area.
  • the central conductors are exposed over a given distance and these exposed ends are slid in a metal bush provided with an envelope of insulating material.
  • the metal bush may be provided with one or more axial slots and may have a slightly smaller inner diameter than the diameter of the central conductor so that a clamping connection is obtained.
  • the outer diameter of the insulating envelope of this cylindrical connection piece is preferably equal to the diameter of the adjacent parts of the cable dielectric. If these diameters differ, the diameter at each end is equal to the diameter of the adjacent cable dielectric.
  • This envelope may be connected to one of the shells.
  • An electrical connection between the cylindrical outer conductors may be obtained, for example, with the aid of shells of metal overlapping parts of the outer conductor and being provided in a clamping manner on the outer conductors with the aid of a clamping device, for example, clamping rings.
  • These shells are preferably provided with adjoining profiled edges at least in the area of the connection so as to avoid outward radiation.
  • an outer sheath may be provided, for example, by applying a heat shrinkable plastics tube or a self-vulcanizing sealing tape to the assembly.
  • FIGS. 11 to 3 show axial cross-sections of cable ends at various preparatory stages for the provision of the connection according to the invention
  • FIG. 4 shows a connection according to the invention in an axial cross-section.
  • FIG. 5 shows the cylindrical connection piece in a radial cross-section.
  • FIG. 6 shows a shell-shaped connection piece axial cross-section.
  • FIG. 7 shows two shell-shaped connection pieces in a radial elevation view.
  • FIG. 8 shows a finished connection in an axial crosssection.
  • FIG. I shows one end of a coaxial cable in an axial cross-section.
  • the cable comprises a central conductor 1 of solid copper, a solid dielectric 2 of polyethylene, an outer conductor 3 of copper foil and/or copper stranded wire and an outer sheath 4 of polyethylene.
  • An equal part of the sheath 4 and the outer conductor 3 is removed from the cable end, while the outer sheath 4 is radially cut at 5 as far as the outer conductor 3.
  • part of the dielectric 2 is removed so that after this operation the central conductor partly projects beyond the dielectric (FIG. 2).
  • Two shells (6 and 7) are removed from the dielectric. If desired, this operation may be combined with the previous operation, unbaring part of the central conductors.
  • the slot obtained by removing the shell 6 serves to accommodate the'part 9 projecting on the inner side of the shell 8.
  • the reduction in diameter of the dielectric by removing the shell 7 serves to accommodate the thicl ness of the shell 8 so that, as shown in FIG. 4, the outer in an diameter at the area of the connection coincides with that of the solid dielectric of the cable ends.
  • the sheath part 4A is removed.
  • the parts of the central conductor 1 projecting outside the solid dielectric are slid into the connection piece which is shown in a radial cross-section in FIG. 5.
  • connection piece 10 consists of a metal bush 11 which may have a slightly smaller diameter than the central conductors and may be provided with one or more axially varying slots so as to obtain a clamping tit, and an envelope of insulating material 12. Since the provision of the metal bush 11 causes the conductor diameter at the area of this connection to increase relatively, it is generally necessary to adapt, or in this case to decrease the dielectric constant of the material for the sheath 12 if this is the same material as that used for the solid dielectric 2. This may be realized, for example, by pro-- viding a plurality of ducts 13 (see FIG. 5) in the envelope 12parallel to the axis.
  • FIG. 6 is a longitudinal cross-section of such a shell 8.
  • the shell 8 may be manufactured from the same electrically insulating material as that for the solid dielectric 2, for example, polyethylene.
  • Two shells combined may constitute a closed cylinder sheath and it is alternatively possible to form the shells in such a manner that three or more shells constitute a closed cylinder sheath.
  • FIG. 7 is a radial elevational view of two shells 8.
  • the tangent planes 14 may be provided with fitting ridges and slots.
  • a thin coating of water repellent mass for example, polyethylene wax or silicon grease may be provided between all parts.
  • two copper shells 15 and 16 are provided on the connection in an overlapping electrical contact with the outer conductors 3 and secured with the aid of clamping rings 18.
  • a tube of elastic electrically insulating material 17 for example, a shrink tube of polyethylene previously provided on one of the cable ends is slid over the assembly.
  • This tube 17 serves as the outer sheath.
  • a connection as the one shown may be subjected to pulling forces normally occuring during handling of the cable without the risk of varying the electrical properties of the connection between the cable ends or the impedance at that area. Such a connection withstands without any risk realing and derealing on reels.
  • the provision of cable muffs is generally not necessary because a sufficient water-tightness is obtained with the construction according to the invention.
  • a connection according to the invention may be used, for example, for connecting cable ends having a total diameter of 15 mms. or more.
  • connection of two coaxial cable ends each having a central conductor, a solid dielectric surrounding the central conductor, a cylindrical outer conductor and a sheath, the central conductors and the outer conductors being electrically connected together, connection pieces of electrically insulating material mechanically connecting the ends of said cables together, said connection pieces being provided with parts projecting in the direction of the central conductor, said parts engaging recesses in the solid dielectrics of the respective cable ends.
  • connection pieces comprise shells of electrically insulating material being provided with at least two radially extending elevations engaging radially extending slots in the dielectric of the two cable ends.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Cable Accessories (AREA)
  • Multi-Conductor Connections (AREA)
US00327491A 1972-02-08 1973-01-29 Electrical connection of coaxial cable ends Expired - Lifetime US3804972A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL727201606A NL155132B (nl) 1972-02-08 1972-02-08 Trekvaste en waterdichte elektrische verbinding van twee coaxiale kabels.

Publications (1)

Publication Number Publication Date
US3804972A true US3804972A (en) 1974-04-16

Family

ID=19815317

Family Applications (1)

Application Number Title Priority Date Filing Date
US00327491A Expired - Lifetime US3804972A (en) 1972-02-08 1973-01-29 Electrical connection of coaxial cable ends

Country Status (18)

Country Link
US (1) US3804972A (pl)
JP (1) JPS4873792A (pl)
AR (1) AR193470A1 (pl)
AT (1) AT331328B (pl)
AU (1) AU465548B2 (pl)
BE (1) BE795043A (pl)
CA (1) CA987754A (pl)
CH (1) CH548681A (pl)
DE (1) DE2303792C3 (pl)
DK (1) DK141308B (pl)
ES (1) ES411344A1 (pl)
FI (1) FI59893C (pl)
FR (1) FR2171214B1 (pl)
GB (1) GB1415897A (pl)
IT (1) IT980470B (pl)
NL (1) NL155132B (pl)
NO (1) NO133469C (pl)
SE (1) SE392368B (pl)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559312A1 (fr) * 1984-02-03 1985-08-09 Spinner Georg Dispositif de connexion pour cables coaxiaux
US4653840A (en) * 1986-06-20 1987-03-31 Amp Incorporated Electrical connections for shielded coaxial conductors
US4698458A (en) * 1984-09-28 1987-10-06 Societa' Cavi Pirelli S.P.A. Joint for cables with an extruded insulation
US5888095A (en) * 1995-12-29 1999-03-30 Rally Manufacturing, Inc. Coaxial cable connector
US6322390B1 (en) * 1999-10-21 2001-11-27 Cosmo Industry Co., Ltd. Coaxial connector
CN103078189A (zh) * 2013-02-05 2013-05-01 祁奇 一种管型导体连接装置
US20150075864A1 (en) * 2013-09-05 2015-03-19 Nexans Device for joining hybrid electrical transmission cables
US20150096803A1 (en) * 2013-10-07 2015-04-09 Tyco Electronics Uk Ltd. Cable Repair Splice
US20180198269A1 (en) * 2016-12-16 2018-07-12 Nexans Cable reinforcement sleeve for subsea cable joint

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330916B2 (pl) * 1973-11-02 1978-08-30
DE102020102059A1 (de) * 2020-01-29 2021-07-29 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Vorkonfektioniertes elektrisches Kabel, Steckverbinderanordnung sowie Verfahren und Vorrichtung zum Konfektionieren eines elektrischen Kabels

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US288311A (en) * 1883-11-13 Subteeeanean line of electeic wiees
US2657252A (en) * 1949-02-28 1953-10-27 Telegraph Constr & Maintenance Joint for coaxial electrical cables
US2937228A (en) * 1958-12-29 1960-05-17 Robinson Machine Works Inc Coaxial cable splice
US3001003A (en) * 1960-01-14 1961-09-19 Robinson Machine Works Inc Coaxial cable splice
US3151211A (en) * 1961-08-04 1964-09-29 Sperry Rand Corp Means for connecting coaxial cables

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912462C (de) * 1939-10-27 1954-05-31 Siemens Ag Leitungsisolation, insbesondere fuer Abzweigstellen, Kruemmer usw. bei Hochspannungssammelschienen, Zuleitungen und aehnlichem
US2451868A (en) * 1943-01-18 1948-10-19 Quackenbush Edward Clarke Joint for high-frequency transmission lines
US3331917A (en) * 1965-03-10 1967-07-18 Amp Inc Coaxial and shielded in-line termination
US3417195A (en) * 1968-03-06 1968-12-17 Amp Inc Strip and nonstrip electrical connection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US288311A (en) * 1883-11-13 Subteeeanean line of electeic wiees
US2657252A (en) * 1949-02-28 1953-10-27 Telegraph Constr & Maintenance Joint for coaxial electrical cables
US2937228A (en) * 1958-12-29 1960-05-17 Robinson Machine Works Inc Coaxial cable splice
US3001003A (en) * 1960-01-14 1961-09-19 Robinson Machine Works Inc Coaxial cable splice
US3151211A (en) * 1961-08-04 1964-09-29 Sperry Rand Corp Means for connecting coaxial cables

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559312A1 (fr) * 1984-02-03 1985-08-09 Spinner Georg Dispositif de connexion pour cables coaxiaux
US4594474A (en) * 1984-02-03 1986-06-10 Georg Spinner Connecting device for coaxial cables
US4698458A (en) * 1984-09-28 1987-10-06 Societa' Cavi Pirelli S.P.A. Joint for cables with an extruded insulation
AU582192B2 (en) * 1984-09-28 1989-03-16 Societa' Cavi Pirelli S.P.A. Joint for cables with extruded insulation
US4653840A (en) * 1986-06-20 1987-03-31 Amp Incorporated Electrical connections for shielded coaxial conductors
US5888095A (en) * 1995-12-29 1999-03-30 Rally Manufacturing, Inc. Coaxial cable connector
US6322390B1 (en) * 1999-10-21 2001-11-27 Cosmo Industry Co., Ltd. Coaxial connector
CN103078189A (zh) * 2013-02-05 2013-05-01 祁奇 一种管型导体连接装置
US20150075864A1 (en) * 2013-09-05 2015-03-19 Nexans Device for joining hybrid electrical transmission cables
US9379531B2 (en) * 2013-09-05 2016-06-28 Nexans Device for joining hybrid electrical transmission cables
US20150096803A1 (en) * 2013-10-07 2015-04-09 Tyco Electronics Uk Ltd. Cable Repair Splice
WO2015054270A3 (en) * 2013-10-07 2015-09-03 Tyco Electronics Corporation Cable repair splice
US9537230B2 (en) * 2013-10-07 2017-01-03 Tyco Electronics Corporation Cable repair splice
US20180198269A1 (en) * 2016-12-16 2018-07-12 Nexans Cable reinforcement sleeve for subsea cable joint
US10777988B2 (en) * 2016-12-19 2020-09-15 Nexans Cable reinforcement sleeve for subsea cable joint

Also Published As

Publication number Publication date
ES411344A1 (es) 1976-04-01
DE2303792B2 (de) 1978-08-10
CA987754A (en) 1976-04-20
ATA98473A (de) 1975-11-15
GB1415897A (en) 1975-12-03
IT980470B (it) 1974-09-30
SE392368B (sv) 1977-03-21
DK141308B (da) 1980-02-18
FI59893B (fi) 1981-06-30
AU465548B2 (en) 1975-10-02
NO133469B (pl) 1976-01-26
DE2303792A1 (de) 1973-08-16
NL7201606A (pl) 1973-08-10
AU5165473A (en) 1974-08-01
AR193470A1 (es) 1973-04-23
NO133469C (pl) 1976-05-05
FR2171214A1 (pl) 1973-09-21
FR2171214B1 (pl) 1978-06-23
NL155132B (nl) 1977-11-15
DK141308C (pl) 1980-08-11
AT331328B (de) 1976-08-10
BE795043A (nl) 1973-08-06
FI59893C (fi) 1981-10-12
DE2303792C3 (de) 1979-04-12
JPS4873792A (pl) 1973-10-04
CH548681A (de) 1974-04-30

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