US3859455A - Connection of coaxial cable ends - Google Patents

Connection of coaxial cable ends Download PDF

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Publication number
US3859455A
US3859455A US327502A US32750273A US3859455A US 3859455 A US3859455 A US 3859455A US 327502 A US327502 A US 327502A US 32750273 A US32750273 A US 32750273A US 3859455 A US3859455 A US 3859455A
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US
United States
Prior art keywords
connection
cable
envelope
dielectric
conductors
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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
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US327502A
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English (en)
Inventor
Hubertus Johannes Jose Gommans
Josephus Gerardu 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 US3859455A publication Critical patent/US3859455A/en
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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 a water resistant 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 together in a conventional manner, for example, by means of clamping connections.
  • the invention further relates to a method of manufacturing a moisture-tight connection of two coaxial cable ends.
  • connection must be waterresistant and must be able to withstand pulling forces occuring during normal handling of the cable.
  • existing connections are of a complicatednature and are expensive and easily give rise to errors. They can only be applied by specially trained people and generally require time-consuming operations.
  • An object of the invention is to provide a connection which can be applied quickly and without errors and with as few tools as possible by untrained personnel after some instructions, and which connection is relatively inexpensive
  • a connection between two coaxial cable ends which satisfies this condition is characterized in that the cable ends are mechanically connected together by means of shell-shaped connection pieces of electrically conducting material provided with parts projecting in the direction of the central conductor, said connection pieces overlapping the outer conductors of the two cable ends and electrically connecting them together while they are provided in a clamping manner by means of clamping devices on the dielectrics with the outer conductor of the two cable ends.
  • connection pieces consist of shells of electrically conducting material having a ridged inner surface for at least the part overlapping the outer conductors.
  • a connection according to the invention may be obtained as follows: the sheath is removed radially over a given distance from the two cable ends and subsequently a part is radially removed from the bared part of the outer conductor.
  • the central conductors are bared over a given distance and these bared ends are slid in a metal bush provided with an envelope of insulating material.
  • the insulating material is preferably the same material as that used for the cable dielectric.
  • 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 ratio between the internal diameter (D) of the outer conductor and the diameter (d) of the inner conductor, which determines the impedance, to the same value as in the cable ends it is necessary, due to the slightly larger diameter of the inner conductor, to give the insulating envelope of the metal bush a slightly larger thickness than the dielectric of the cable ends and this in such a manner that the ratio D/d is equal to that in the cable ends. If the diameters of the cable ends differ, the diameter at each end of the insulating envelope is slightly larger than the diameter of the adjacent cable dielectric.
  • the diameter between the two ends then varies, for example, regularly with the distance so that a conical shape is obtained, while it must of course be ensured that the impedance in the conical part is adapted to that of the cable ends.
  • a further adaptation may also be obtained by providing the envelopeof insulating material with ducts.
  • the insulating envelope at both ends and in alignment therewith supports hollow cylinders having a slight length and being made of the same material with a wall thickness which is equal to the difference in thickness of the ends of the insulating envelope and the adjacent cable dielectric.
  • the dielectrics of the cable ends are slid into these hollow cylinders.
  • the described cylinders have for their object to lengthen the creeping-path for moisture.
  • Polythene wax or another viscous moisture-repellent material may be provided on the inner walls of the cylinders so that the water resistance is still better ensured.
  • the length of the cylinders is preferably chosen to be such that the part of the dielectric not coated with the outer conductor is enveloped thereby. It was found that a satisfactory moisture-tight connection can be obtained in this manner while the reflections caused at that area by the extra quantity of insulation material are still very small and can be maintained within the admissible limits.
  • Thhe electrical connection between the cylindrical outer conductors is obtained by means of the shell-shaped connection pieces of electrically conducting material, for example, copper, nickel-plated copper or brass.
  • the shell-shaped connection pieces may be clamped with the aid of clamping rings on the outer conductors and on the dielectric located underneath.
  • the connection pieces at least as regards the parts overlapping the outer conductors, are provided on their inner sides with elevations, such as internal varying ridges. These elevations may have another form, provided that a satisfactory electrical and mechanical connection can be obtained therewith.
  • the shellshaped connection pieces are preferably provided at least at the area of the connection of the central conductors with adjoining profiled edges so as to prevent outward radiation. Subsequently an outer sheath may be provided, for example, by sliding a heat-shrinkable tube of electrically insulating material, for example, polyethylene on the assembly or by providing vulcanizing sealing tape.
  • FIGS. 1 and 2 are longitudinal cross sections of a cable and at different preparatory stages for the provision of a connection according to the invention.
  • FIG. 3 shows a connection of two cable ends of the same diameter in a longitudinal cross section.
  • FIG. 4 shows a cross section taken on the line lV-lV in FIG. 3.
  • FIG. shows a longitudinal cross section of a connection between two cable ends of unequal diameter.
  • FIG. 1 shows partly in a cross section a coaxial cable end part of whose sheath 1 and the outer conductor 2 consisting of a copper foil and a copper stranded wire provided thereacross has been removed so as to prepare the provision of the connection.
  • part of the dielectric 3 is removed so that the central conductor 4 projects outside the dielectric 3.
  • the parts of the centralconductors 4 projecting outside the dielectric 3 of two cable ends are then slid into the connection piece 5.
  • the connection piece 5 consists of a metal bush 6 which may have a slightly smaller diameter than the central conductors 4 and may be provided with one or more slots running parallel to the axis so as to obtain a clamping fit, and an envelope of insulating material 7.
  • the thickness of the insulating envelope 7, which consists preferably of the same material as the cable dielectrics 3, for example, polyethylene, is chosen to be such that the ratio D/d is equal to that in the cable ends (D is the inner diameter of the outer conductor).
  • the insulating envelope 7 extends at both ends in the form of thin walled hollow cylinders 8 and 8A having a wall thickness which is equal to the said thickness difference between the envelope 7 and the cable dielectric 3 and which surround the cable dielectrics over the part from which the outer conductors 2 have been removed. Subsequently the metal shells 9 are provided (FIGS. 3 and 4).
  • two shells may constitute a cylinder sheath. It is of course alternatively possible to form the shells in such a manner that three or more shells constitute a closed cylinder sheath. Generally it is, however, preferred to limit the number of shells so that also the number of seams through which moisture might penetrate is limited.
  • the mutual tangent planes of the shell 9 are profiled at least for the part surrounding the connection piece 5, for example, in the manner as shown at 10in FIG. 4. This profile has the advantage that for a given connection only one type of shell part, dependent on the cable diameter, is to be kept in stock.
  • the shells 9 are provided on their inner sides with radially varying ridges.
  • the shells 9 are secured with clamping rings 12 and 13. Subsequently a shrinkable tube of polyethylene is provided on the sheath 14.
  • the connection of two cable ends having an unequal diameter and being shown in a longitudinal cross section in FIG. 5 does not principally differ from that of FIG. 4.
  • the reference numerals have the same significance as those in FIG. 5. It is evident that the shape of the then conical envelope 7 of insulating material is to be chosen to be such that the impedance in the connection does not differ from that in the cable ends.
  • a thin layer of water-repellent mass for example, polyethylene wax or silicon grease may be provided between all parts of the connection.
  • a connection as shown in FIGS. 3. and 5 can withstand not too large pulling forces so that there is no risk of variation of the electrical properties connection between the cable ends or of the impedance at that area.
  • a connection according to the invention may be used, for example, for the assembly of networks for communal aerial systems, for coupling all kinds of cables used for this purpose with a solid dielectric and mutually equal or different diameters may be coupled using the connection according to the invention.
  • connections may be used for buried and overhead cables and the use of cable muffs is generally not necessary.
  • connection according to claim 1 further comprising a viscous moisture repellent material between the hollow cylinders and the cable dielectric enveloped thereby.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
US327502A 1972-02-08 1973-01-29 Connection of coaxial cable ends Expired - Lifetime US3859455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7201608.A NL155988B (nl) 1972-02-08 1972-02-08 Verbinding van twee coaxiale kabels.

Publications (1)

Publication Number Publication Date
US3859455A true US3859455A (en) 1975-01-07

Family

ID=19815319

Family Applications (1)

Application Number Title Priority Date Filing Date
US327502A Expired - Lifetime US3859455A (en) 1972-02-08 1973-01-29 Connection of coaxial cable ends

Country Status (15)

Country Link
US (1) US3859455A (no)
JP (1) JPS4891588A (no)
AR (1) AR193479A1 (no)
AT (1) AT333875B (no)
BE (1) BE795044A (no)
CA (1) CA994440A (no)
CH (1) CH549892A (no)
DE (1) DE2303564C3 (no)
DK (1) DK141309B (no)
FI (1) FI58999C (no)
FR (1) FR2171215B1 (no)
GB (1) GB1416222A (no)
IT (1) IT980471B (no)
NL (1) NL155988B (no)
SE (1) SE392367B (no)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2402311A1 (fr) * 1977-09-06 1979-03-30 Int Standard Electric Corp Equipement et procede de raccordement de cables coaxiaux sous-marins
US4389625A (en) * 1978-06-26 1983-06-21 Allied Corporation Electrical connector having a captivated, electrically compensated inner conductor
EP0110519A2 (en) * 1982-10-01 1984-06-13 RAYCHEM CORPORATION (a Delaware corporation) Heat recoverable coupling assembly
US4667064A (en) * 1985-12-10 1987-05-19 Sheu Chin Chang Cable connector structure
US5217392A (en) * 1992-11-13 1993-06-08 The Whitaker Corporation Coaxial cable-to-cable splice connector
US5371322A (en) * 1993-03-15 1994-12-06 Selmeski; Eugene D. Antenna wire coupling
US5463187A (en) * 1992-09-30 1995-10-31 The George Ingraham Corp. Flexible multi-duct conduit assembly
WO2008138292A1 (de) * 2007-05-09 2008-11-20 Spinner Gmbh Verfahren zum dauerhaften verbinden eines ersten hf-koaxialkabels mit einem zweiten hf-koaxialkabel
US20090298358A1 (en) * 2008-05-30 2009-12-03 Hubbell Incorporated. Corrosion Resistant automatic splice
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
CN107919537A (zh) * 2016-10-11 2018-04-17 住友电装株式会社 导电电路
US20180233833A1 (en) * 2017-02-14 2018-08-16 Te Connectivity Corporation Electrical cable splice
RU197160U1 (ru) * 2019-10-07 2020-04-08 Акционерное общество "Военно-промышленная корпорация "Научно-производственное объединение машиностроения" Обжимной переходной экранированный контакт для сращивания электрических цепей
US10862289B2 (en) 2016-11-03 2020-12-08 Hubbell Incorporated Flexible cable splice
US11227957B1 (en) * 2020-10-28 2022-01-18 Dong Chen Protective component
US11316287B2 (en) * 2019-11-15 2022-04-26 Yazaki Corporation Connection device and electric wire connection structure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449981A1 (fr) * 1979-02-23 1980-09-19 Cables De Lyon Geoffroy Delore Dispositif de raccordement entre les conducteurs exterieurs de deux paires coaxiales
FR2481531A1 (fr) * 1980-04-23 1981-10-30 Cables De Lyon Geoffroy Delore Procede d'epissurage et epissure pour cable coaxial a isolation massive
EP0844621A3 (de) * 1996-11-26 1999-02-10 Siemens Aktiengesellschaft Koaxialkabelanordnung

Citations (6)

* 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
US297927A (en) * 1884-04-29 goebel
US2587676A (en) * 1948-10-14 1952-03-04 Dallas C Akers Connector clamp for coaxial electrical cables
US3001003A (en) * 1960-01-14 1961-09-19 Robinson Machine Works Inc Coaxial cable splice
US3147057A (en) * 1960-07-12 1964-09-01 Bendix Corp Coaxial connector
US3331917A (en) * 1965-03-10 1967-07-18 Amp Inc Coaxial and shielded in-line termination

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451868A (en) * 1943-01-18 1948-10-19 Quackenbush Edward Clarke Joint for high-frequency transmission lines

Patent Citations (6)

* 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
US297927A (en) * 1884-04-29 goebel
US2587676A (en) * 1948-10-14 1952-03-04 Dallas C Akers Connector clamp for coaxial electrical cables
US3001003A (en) * 1960-01-14 1961-09-19 Robinson Machine Works Inc Coaxial cable splice
US3147057A (en) * 1960-07-12 1964-09-01 Bendix Corp Coaxial connector
US3331917A (en) * 1965-03-10 1967-07-18 Amp Inc Coaxial and shielded in-line termination

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2402311A1 (fr) * 1977-09-06 1979-03-30 Int Standard Electric Corp Equipement et procede de raccordement de cables coaxiaux sous-marins
US4389625A (en) * 1978-06-26 1983-06-21 Allied Corporation Electrical connector having a captivated, electrically compensated inner conductor
EP0110519A2 (en) * 1982-10-01 1984-06-13 RAYCHEM CORPORATION (a Delaware corporation) Heat recoverable coupling assembly
EP0110519A3 (en) * 1982-10-01 1986-05-14 Raychem Corporation Heat recoverable coupling assembly
US4667064A (en) * 1985-12-10 1987-05-19 Sheu Chin Chang Cable connector structure
US5463187A (en) * 1992-09-30 1995-10-31 The George Ingraham Corp. Flexible multi-duct conduit assembly
US5217392A (en) * 1992-11-13 1993-06-08 The Whitaker Corporation Coaxial cable-to-cable splice connector
US5371322A (en) * 1993-03-15 1994-12-06 Selmeski; Eugene D. Antenna wire coupling
WO2008138292A1 (de) * 2007-05-09 2008-11-20 Spinner Gmbh Verfahren zum dauerhaften verbinden eines ersten hf-koaxialkabels mit einem zweiten hf-koaxialkabel
US20090298358A1 (en) * 2008-05-30 2009-12-03 Hubbell Incorporated. Corrosion Resistant automatic splice
US7799996B2 (en) 2008-05-30 2010-09-21 Hubbell Incorporated Corrosion resistant automatic splice
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
CN107919537A (zh) * 2016-10-11 2018-04-17 住友电装株式会社 导电电路
US10319495B2 (en) * 2016-10-11 2019-06-11 Sumitomo Wiring Systems, Ltd. Conductive path
US10862289B2 (en) 2016-11-03 2020-12-08 Hubbell Incorporated Flexible cable splice
US20180233833A1 (en) * 2017-02-14 2018-08-16 Te Connectivity Corporation Electrical cable splice
CN108429034A (zh) * 2017-02-14 2018-08-21 泰连公司 电缆接头
US10622799B2 (en) * 2017-02-14 2020-04-14 Te Connectivity Corporation Electrical cable splice
US11581722B2 (en) * 2017-02-14 2023-02-14 Te Connectivity Solutions Gmbh Electrical cable splice
RU197160U1 (ru) * 2019-10-07 2020-04-08 Акционерное общество "Военно-промышленная корпорация "Научно-производственное объединение машиностроения" Обжимной переходной экранированный контакт для сращивания электрических цепей
US11316287B2 (en) * 2019-11-15 2022-04-26 Yazaki Corporation Connection device and electric wire connection structure
US11227957B1 (en) * 2020-10-28 2022-01-18 Dong Chen Protective component

Also Published As

Publication number Publication date
DK141309C (no) 1980-07-28
CH549892A (de) 1974-05-31
FI58999C (fi) 1981-05-11
DE2303564A1 (de) 1973-08-16
AT333875B (de) 1976-12-10
SE392367B (sv) 1977-03-21
JPS4891588A (no) 1973-11-28
IT980471B (it) 1974-09-30
BE795044A (nl) 1973-08-06
DE2303564B2 (de) 1978-04-27
FR2171215B1 (no) 1977-12-30
DE2303564C3 (de) 1979-01-04
GB1416222A (en) 1975-12-03
AR193479A1 (es) 1973-04-23
CA994440A (en) 1976-08-03
FI58999B (fi) 1981-01-30
FR2171215A1 (no) 1973-09-21
NL155988B (nl) 1978-02-15
NL7201608A (no) 1973-08-10
DK141309B (da) 1980-02-18
ATA98573A (de) 1976-04-15

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