EP2019394B1 - Câble électrique flexible - Google Patents

Câble électrique flexible Download PDF

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Publication number
EP2019394B1
EP2019394B1 EP07290849A EP07290849A EP2019394B1 EP 2019394 B1 EP2019394 B1 EP 2019394B1 EP 07290849 A EP07290849 A EP 07290849A EP 07290849 A EP07290849 A EP 07290849A EP 2019394 B1 EP2019394 B1 EP 2019394B1
Authority
EP
European Patent Office
Prior art keywords
core
line according
jacket
around
polytetrafluorethylene
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.)
Not-in-force
Application number
EP07290849A
Other languages
German (de)
English (en)
Other versions
EP2019394A1 (fr
Inventor
Ferdinand Grögl
Thomas Mann
Angela Brutler
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.)
Nexans SA
Original Assignee
Nexans SA
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 Nexans SA filed Critical Nexans SA
Priority to DE502007004019T priority Critical patent/DE502007004019D1/de
Priority to EP07290849A priority patent/EP2019394B1/fr
Priority to AT07290849T priority patent/ATE470226T1/de
Publication of EP2019394A1 publication Critical patent/EP2019394A1/fr
Application granted granted Critical
Publication of EP2019394B1 publication Critical patent/EP2019394B1/fr
Not-in-force 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
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/189—Radial force absorbing layers providing a cushioning effect
    • 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
    • H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
    • 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
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/041—Flexible cables, conductors, or cords, e.g. trailing cables attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables

Definitions

  • the invention relates to a flexible electrical line according to the preamble of patent claim 1.
  • Such lines are used for example for connecting mobile devices, in particular robots, with a voltage or signal source.
  • the cables must be mechanically strong, with a constant flexural strength for a long time. They should remain well bendable in a wide temperature range, for example, between -40 ° C and +80 ° C.
  • Of particular importance to such conduits is their torsional strength as robots must become more and more mobile as technology advances so that they can be moved back and forth along production lines, for example.
  • the lines are especially then constantly twisted in changing directions.
  • cables are required, for example, survive up to five million torsional cycles torsional loads by angles of, for example, ⁇ 360 ° and more unscathed.
  • the well-known line after the above-mentioned EP 1041585 B1 is designed as a flexible power line, which has a central core, around the power core, at least one control line and at least one data line are herumversilt.
  • the Core has a central plastic traction element over which a sheath of a cross-linked material is mounted, in which for each umversilte element of the contour of the same adapted, extending over the entire axial length of the core indentation is attached.
  • This power line in addition to energy and control commands in addition, for example, also measured data can be transmitted.
  • the good bendability of the power line is supported by the special design of the core, in which the respective stranded element adapted dents these elements can slide when bending the power line.
  • This power line has proven itself in practice. Measures, such as a sliding mobility of the stranded elements to be achieved relative to the core, and the torsional strength of the power line are not mentioned in the document.
  • the invention has for its object to make the line initially described so that it has an increased torsional strength.
  • Essential element of this line is the lubricious coated, elastically compressible and tensile core, through which flexibility and torsional strength of the line are ensured in the long term.
  • the good flexibility of the line is supported by the existing plastic tensile element.
  • the elastically compressible sheath of the core allows a displacement of the stranding elements when they are pressed against the core during rotation of the line.
  • the stranding members can easily slide on the same in the axial direction because of the sliding layer of the core, damage thereof can be excluded even after many torsional and bending cycles with high safety.
  • Fig. 1 is a flexible electrical line reproduced in the simplest embodiment, which has a tensile core K as a central element.
  • the core K consists of a tensile element 1 made of plastic and a surrounding casing 2 made of an elastically compressible material. Twisted around the core K are two cores 3 and 4, which may be signal cores or energy cores, and filling elements 5 and 6, by which an approximately circular core of the conduit is formed together with the cores 3 and 4.
  • the stranding and filling elements 3 to 6 are surrounded by a jacket 7 made of insulating material, which consists for example of polyurethane.
  • the sheath 2 of the core K is in the stranding of the stranding 3 to 5 pressed by the same in the radial direction.
  • K dents are formed in the core, as it is in the Fig. 1, 3rd and 4 is indicated. The dents extend helically in the axial direction.
  • the kernel K has according to Fig. 2 in its original form an approximately circular cross-section. It can depending on the nature and structure of the stranding 3 to 5 but also have a different geometric shape.
  • the core K can also be oval or rectangular in cross section, for example.
  • the shell 2 consists of a soft, gel-like thermoplastic elastomer (TPE-O) or of silicone or rubber, and also in foamed or cellular form.
  • the tensile element 1 is advantageously made of aramid. An aramid yarn for the element 1 is preferably used.
  • the sheath 2 of the core K is surrounded by a sliding layer 8, the material of which has good sliding properties in relation to the stranding elements 3 to 5.
  • Such sliding layer 8 consists of materials based on polytetrafluoroethylene (PTFE).
  • PTFE polytetrafluoroethylene
  • a corresponding material in liquid form in which PTFE nanoparticles are included, for example, can be sprayed all around the shell 2 or applied by dipping.
  • the sliding layer 8 produced in this way can subsequently be thermally treated in a heating zone equipped, for example, with infrared radiators. It adheres well to the shell 2 and has a thickness lying between 5 .mu.m and 25 .mu.m.
  • a film of PTFE with a thickness of at least 25 microns can be wrapped around the envelope 2 gapless.
  • a film is advantageously made of foamed PTFE, preferably a low density unsintered PTFE.
  • the sliding layer 8 is designed and arranged around the core K around, that the elastic deformability of the sheath 2 is not affected. On the other hand, the sliding layer 8 can follow any changes in shape of the shell 2 of the core K without problems.
  • the line according to the invention can according to Fig. 3 be equipped with an overall electrical screen 9, which is disposed above the existing of the stranding 3 to 6 soul.
  • a total screen 9 can be designed as a braid or as Umseilung.
  • To build the same tinned copper wires can be used in conventional technology. With particular advantage but wires are used with better resilient properties.
  • Such wires are advantageously tin-plated or nickel-plated copper-clad steel wires or high-strength chrome-nickel steel wires or tinned steel wires individually wrapped with tin-plated copper tapes.
  • a protective cover 10 is formed, which is elastically compressible and advantageously consists of the same materials as the shell 2.
  • the protective cover 10 is preferably again surrounded by a thin, for the sake of clarity not shown with sliding layer on which the overall shield 9 can slide well when twisting the line. She is with Advantage as well as the sliding layer 8 of the core K constructed.
  • the jacket 7 is made of insulating material.
  • the line according to the invention has in a preferred embodiment more than two wires.
  • She can according to Fig. 4 for example, consist of three power wires 11, 12 and 13 and a data line 14, which are described as stranding as described for the wires 3 and 4, around the core K are stranded around.
  • the data line 14 consists for example of four wires 15, which can be stranded together to form a so-called "star quad".
  • an electrically effective screen which is designed for example as a braid or braiding of tinned or silvered copper wires.
  • a thin sliding layer of a material is expediently formed around the data line 14, on which the screen can glide well.
  • a film of PTFE is preferably used, which is formed around the data line 14 without gaps.
  • Particularly suitable is a foamed, unsintered low density PTFE.

Landscapes

  • Insulated Conductors (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)

Claims (9)

  1. Ligne électrique flexible pour des charges mobiles, qui présente au moins deux brins constitués chacun d'un conducteur électrique et d'une isolation l'entourant, en tant qu'éléments de câblage, qui sont câblés autour d'un noyau, qui est équipé d'un élément résistant à la traction en plastique, qui est entouré par une douille en matériau isolant, dans laquelle sont prévus des creux s'étendant dans la direction longitudinale, dans lesquels sont situés les éléments de câblage et qui sont entourés par une enveloppe commune en matériau isolant,
    caractérisé en ce que
    - la douille (2) du noyau (K) se compose d'un élastomère thermoplastique mou ou de silicone ou de caoutchouc en tant que matériau comprimable à élasticité durable, et
    - en ce que la douille (2) est entourée par une couche glissante (8) en un matériau à base de polytétrafluoréthylène qui présente de bonnes propriétés de glissement par rapport aux éléments de câblage (3, 4, 5).
  2. Ligne selon la revendication 1, caractérisé en ce que la couche de glissement (8) est appliquée sur la douille (2) avec une épaisseur de couche d'au moins 5 µm par pulvérisation ou immersion.
  3. Ligne selon la revendication 1, caractérisé en ce qu'une feuille de polytétrafluoréthylène d'une épaisseur d'au moins 25 µm est façonnée sans espace tout autour de la douille (2).
  4. Ligne selon la revendication 3, caractérisé en ce que la feuille se compose de polytétrafluoréthylène moussé, non fritté, de faible densité.
  5. Ligne selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'une douille de protection (10) en un matériau comprimable élastiquement est appliquée par-dessus l'âme constituée du noyau (K) et des éléments de câblage.
  6. Ligne selon la revendication 5, caractérisé en ce qu'une feuille de polytétrafluoréthylène servant de couche de glissement est appliquée sur la douille de protection (10).
  7. Ligne selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'il est prévu un blindage total (9) entourant l'âme constituée du noyau (K) et des éléments de câblage (3, 4, 5) ainsi qu'éventuellement de la douille de protection (10) avec la couche de glissement.
  8. Ligne selon la revendication 7, caractérisé en ce que le blindage total (9) est réalisé sous forme de guipage constitué de fils d'acier plaqués de cuivre, étamés ou nickelés.
  9. Ligne selon la revendication 7, caractérisé en ce que le blindage total (9) est réalisé sous forme de tressage constitué de fils d'acier plaqués de cuivre, étamés ou nickelés.
EP07290849A 2007-07-04 2007-07-04 Câble électrique flexible Not-in-force EP2019394B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502007004019T DE502007004019D1 (de) 2007-07-04 2007-07-04 Flexible elektrische Leitung
EP07290849A EP2019394B1 (fr) 2007-07-04 2007-07-04 Câble électrique flexible
AT07290849T ATE470226T1 (de) 2007-07-04 2007-07-04 Flexible elektrische leitung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07290849A EP2019394B1 (fr) 2007-07-04 2007-07-04 Câble électrique flexible

Publications (2)

Publication Number Publication Date
EP2019394A1 EP2019394A1 (fr) 2009-01-28
EP2019394B1 true EP2019394B1 (fr) 2010-06-02

Family

ID=38669854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07290849A Not-in-force EP2019394B1 (fr) 2007-07-04 2007-07-04 Câble électrique flexible

Country Status (3)

Country Link
EP (1) EP2019394B1 (fr)
AT (1) ATE470226T1 (fr)
DE (1) DE502007004019D1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007012165U1 (de) * 2007-08-31 2007-11-22 Nexans Flexible elektrische Leitung
MY165058A (en) * 2009-11-27 2018-02-28 Aker Subsea As Vulcanised power umbilical
MX357560B (es) 2013-12-20 2018-07-13 Continental Teves Ag & Co Ohg Cable híbrido, método para producir el mismo, y uso de dicho cable híbrido.
CN103854784B (zh) * 2014-02-24 2016-03-09 安徽华联电缆集团有限公司 一种阻燃耐热耐高温高弹性控制电缆
CN103886979A (zh) * 2014-02-25 2014-06-25 安徽怡和电缆有限公司 一种聚乙烯绝缘仪表信号电缆
CN104715827A (zh) * 2015-02-27 2015-06-17 安徽华天电缆有限公司 一种耐高温屏蔽软电缆
CN104810081A (zh) * 2015-04-28 2015-07-29 无锡鑫宏业特塑线缆有限公司 一种多防护低烟无卤高阻燃轨道交通用直流电缆
CN105070358A (zh) * 2015-08-14 2015-11-18 昆山信昌电线电缆有限公司 一种高柔软耐磨阻燃拖链工业用电缆
CN106205791A (zh) * 2016-08-30 2016-12-07 无锡江南电缆有限公司 一种改进型机器人电缆
CN109243676A (zh) * 2018-09-28 2019-01-18 新宇电缆集团股份有限公司 一种高柔抗扭机器人电缆
CN109411117A (zh) * 2018-11-27 2019-03-01 天津亿鑫通科技股份有限公司 一种无卤超柔耐扭曲电缆及其制备方法
DE202020102564U1 (de) 2020-05-06 2020-05-28 Offcon GmbH Anordnung mit Torsionsverbindungen
DE102020112329A1 (de) 2020-05-06 2021-11-11 Offcon GmbH Anordnung mit Torsionsverbindungen
CN117198622A (zh) * 2023-09-14 2023-12-08 安徽埃克森科技集团有限公司 一种机器人电缆

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636621C2 (de) * 1986-10-28 1995-03-02 Eilentropp Kg Hochflexibles elektrisches Kabel oder entsprechende Leitung
DE19914924A1 (de) * 1999-04-01 2000-10-05 Alcatel Sa Flexible elektrische Starkstromleitung
DE10162739A1 (de) * 2001-12-20 2003-07-03 Nexans Flexible elektrische Leitung

Also Published As

Publication number Publication date
EP2019394A1 (fr) 2009-01-28
DE502007004019D1 (de) 2010-07-15
ATE470226T1 (de) 2010-06-15

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