EP1798739A2 - Câble - Google Patents

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Publication number
EP1798739A2
EP1798739A2 EP06026098A EP06026098A EP1798739A2 EP 1798739 A2 EP1798739 A2 EP 1798739A2 EP 06026098 A EP06026098 A EP 06026098A EP 06026098 A EP06026098 A EP 06026098A EP 1798739 A2 EP1798739 A2 EP 1798739A2
Authority
EP
European Patent Office
Prior art keywords
cable
dielectric
layer
conductive
conductive layer
Prior art date
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.)
Granted
Application number
EP06026098A
Other languages
German (de)
English (en)
Other versions
EP1798739A3 (fr
EP1798739B1 (fr
Inventor
Dieter Klotz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Klotz Audio Interface Systems AIS GmbH
Original Assignee
Klotz Audio Interface Systems AIS GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Klotz Audio Interface Systems AIS GmbH filed Critical Klotz Audio Interface Systems AIS GmbH
Publication of EP1798739A2 publication Critical patent/EP1798739A2/fr
Publication of EP1798739A3 publication Critical patent/EP1798739A3/fr
Application granted granted Critical
Publication of EP1798739B1 publication Critical patent/EP1798739B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1808—Construction of the conductors
    • H01B11/1821—Co-axial cables with at least one wire-wound conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/38—Insulated conductors or cables characterised by their form with arrangements for facilitating removal of insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/12—Arrangements for exhibiting specific transmission characteristics

Definitions

  • the invention relates to a cable, in particular an audio cable, with an inner conductor surrounded by a dielectric and a conductive layer surrounding the dielectric.
  • Instrument cables (and measuring leads and the like.) are usually unbalanced lines with a coaxial structure.
  • a typical instrument cable comprises, as viewed from the outside in, an outer sheath of polyvinyl chloride (PVC), a copper helical shield or copper braid, a conductive plastic layer of conductive PVC or polyethylene (PE), a dielectric (conductor insulation) of solid or foamed polyolefins (PE or PP) and a copper inner conductor.
  • PVC polyvinyl chloride
  • PE polyethylene
  • dielectric conductor insulation
  • PE or PP polyolefins
  • microfonie By using it as a connecting cable between high-impedance devices (inductive sensors and high-impedance amplifiers), "microfonie” appears as a disturbance component. This term refers to sounds that are audible when the cable moves in the form of crashes and crackles. Microphone can also be expressed in terms of values, with a higher value indicating poorer noise behavior and a lower value indicating better noise performance.
  • a conductive layer is applied as a shield over the inner conductor directly surrounding dielectric in the conventional manufacturing in the interior of the cable, such as in the EP 0 260 373 A2 shown.
  • the conductivity of this screen significantly influences the microphone: the higher the conductivity, the lower the microphone.
  • the conductive layer becomes usually made of electrically conductive PE or PVC. PE has a 100 times higher conductivity than PVC, so from this point of view PE should always be preferred to PVC.
  • the bonding of the conductive layer to the dielectric surrounding the inner conductor is problematic. If, for example, a dielectric without foaming is used, the separation of the conductive layer from the dielectric, which is necessary for further processing, usually results in the tearing off of the latter. In a foamed dielectric, such as from the US 5 523 528 As is known, it is impossible to separate the conductive layer from the dielectric. Only the use of an applied between the two components release agent (eg graphite), such as in the U.S. 4,678,865 suggested, can remedy this situation. However, release agents generally have the disadvantage that they contribute significantly to the deterioration of the microphone performance of a cable.
  • release agent eg graphite
  • the object of the invention is therefore to provide a cable with improved microphone performance while avoiding the disadvantages described above.
  • a cable of the aforementioned type is proposed in which a separating layer is interposed between the dielectric and the conductive layer. It has been shown that with this novel cable construction a processing and microphone performance can be achieved, which is not achievable with conventionally constructed cables. Therefore, due to the insertion of the additional layer more expensive production can be accepted.
  • the separation layer is electrically nonconductive.
  • a material for the release layer is particularly suitable PVC.
  • the dielectric preferably consists of solid or foamed polyolefins, in particular PE or PP. Such a conductor insulation ensures good capacitance values.
  • the preferred embodiment further provides a conductive layer of electrically conductive PE.
  • a PE layer has a relatively high conductivity, that is, the electrical resistance of a layer of conductive PE is significantly lower compared to a layer of conductive PVC.
  • the cable shown in the figure is a coaxially constructed audio cable with a copper strand as the inner conductor 10.
  • the inner conductor 10 is surrounded by a dielectric 12 of cell PP, which serves to insulate the inner conductor 10.
  • the dielectric 12 is in turn surrounded by a conductive layer 14 of PE with a very high conductivity.
  • This layer 16 serves mechanically as a separation layer and electrically as a dielectric, i. it is electrically non-conductive.
  • the release layer 16 is made of PVC.
  • the cable further comprises a conductive layer 14 surrounding copper helical shield 18 and an outer sheath 20 made of PVC.
  • a cable of this construction shows a significant improvement in microphone performance compared to conventional audio cables, providing for separation of the dielectric 12 from the conductive layer 14, which allows easy stripping of the cable.
  • the invention is not limited to the example of an audio cable.
  • the structure according to the invention is also suitable for cables in other applications in which microphonic or similar effects are to be eliminated.

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
EP06026098A 2005-12-16 2006-12-15 Câble audio Active EP1798739B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202005019690U DE202005019690U1 (de) 2005-12-16 2005-12-16 Kabel

Publications (3)

Publication Number Publication Date
EP1798739A2 true EP1798739A2 (fr) 2007-06-20
EP1798739A3 EP1798739A3 (fr) 2009-07-22
EP1798739B1 EP1798739B1 (fr) 2012-06-20

Family

ID=36002140

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06026098A Active EP1798739B1 (fr) 2005-12-16 2006-12-15 Câble audio

Country Status (3)

Country Link
US (1) US7420123B2 (fr)
EP (1) EP1798739B1 (fr)
DE (1) DE202005019690U1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8194893B1 (en) 2007-09-28 2012-06-05 Lewis Peter G Wired in-ear monitor system
US7544894B2 (en) * 2007-10-29 2009-06-09 Jay Victor Cable structure
WO2013160493A1 (fr) * 2012-04-25 2013-10-31 TORIBIO CANTERO, José Antonio Câble électrique pour la transmission de signaux analogiques et/ou numériques
JPWO2015030012A1 (ja) * 2013-08-26 2017-03-02 矢崎総業株式会社 シールド電線及びワイヤハーネス
US9672958B2 (en) * 2015-05-19 2017-06-06 Te Connectivity Corporation Electrical cable with shielded conductors

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059724A (en) 1975-03-22 1977-11-22 Homare Ide Shield wire
FR2712115A1 (fr) 1993-11-05 1995-05-12 Filotex Sa Câble blindé, à faible niveau de bruit et de température de service élevée.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2021172C3 (de) * 1970-04-30 1974-06-12 Kabel- Und Metallwerke Gutehoffnungshuette Ag, 3000 Hannover Elektrisches Kabel für Hoch- und Höchstspannungsbeanspruchung, insbesondere mit Polyäthylenisolierung
US4412094A (en) * 1980-05-21 1983-10-25 Western Electric Company, Inc. Compositely insulated conductor riser cable
FR2547945B1 (fr) * 1983-06-21 1986-05-02 Raffinage Cie Francaise Nouvelle structure de cable electrique et ses applications
FR2637127A1 (fr) * 1988-09-23 1990-03-30 Cosyns Henri Ligne coaxiale de transmission basse impedance
US5107076A (en) * 1991-01-08 1992-04-21 W. L. Gore & Associates, Inc. Easy strip composite dielectric coaxial signal cable
US6815617B1 (en) * 2002-01-15 2004-11-09 Belden Technologies, Inc. Serrated cable core
JP3671919B2 (ja) * 2002-03-05 2005-07-13 日立電線株式会社 同軸ケーブル及び同軸多心ケーブル
US20040055780A1 (en) * 2002-07-11 2004-03-25 Susan Hakkarainen Combined suspension cable and electrical conductor
US20050011664A1 (en) * 2003-07-16 2005-01-20 Chang-Chi Lee Structure of a cable

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059724A (en) 1975-03-22 1977-11-22 Homare Ide Shield wire
FR2712115A1 (fr) 1993-11-05 1995-05-12 Filotex Sa Câble blindé, à faible niveau de bruit et de température de service élevée.

Also Published As

Publication number Publication date
EP1798739A3 (fr) 2009-07-22
DE202005019690U1 (de) 2006-02-16
US20070137880A1 (en) 2007-06-21
US7420123B2 (en) 2008-09-02
EP1798739B1 (fr) 2012-06-20

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