EP3879540B1 - Procédé de fabrication d'un câble étanche aux liquides, utilisation d'un connecteur de soudure correspondante et câble étanche aux liquides - Google Patents

Procédé de fabrication d'un câble étanche aux liquides, utilisation d'un connecteur de soudure correspondante et câble étanche aux liquides Download PDF

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Publication number
EP3879540B1
EP3879540B1 EP20192162.4A EP20192162A EP3879540B1 EP 3879540 B1 EP3879540 B1 EP 3879540B1 EP 20192162 A EP20192162 A EP 20192162A EP 3879540 B1 EP3879540 B1 EP 3879540B1
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EP
European Patent Office
Prior art keywords
sheathing
barrier
liquid
covering element
tight
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EP20192162.4A
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German (de)
English (en)
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EP3879540A1 (fr
EP3879540C0 (fr
Inventor
Jan Eisenberg
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Individual
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    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable

Definitions

  • the present invention is based on a method for producing a liquid-tight cable, which has at least one strand provided with a sheath and made of a plurality of individual wires, with a circumferential strip being removed from the sheath at a sealing point and the individual wires of the at least one strand in the area of the A sealant flows around and penetrates the sealing point to form a liquid-tight barrier, and wherein a cap element is connected in a liquid-tight manner to produce a sealing connection with the casing at least on the one hand of the sealing point, and the use of a soldered connector to produce a liquid-tight cable and such a liquid-tight cable.
  • JP 2001057252 A can also be achieved by inserting the stranded wire as a whole into an insulation displacement connector, thereby causing the sheathing to open. Resin, in turn, runs into this small cut and is cast in a block that encloses the entire insulation displacement connector.
  • the JP 2009152012 A finally provides for applying a hot-melt adhesive to a stripped area and applying a vacuum to the cable ends so that the melt is sucked into the cable and seals it.
  • the present invention is based on the object of producing a cost-effective and as quick as possible seal for a cable, which allows high tightness with the lowest possible use of material and labor.
  • the stranded wire is first freed from a circumferential strip of insulating sheathing in the area of a sealing point, ie the stranded wire is exposed in one strip.
  • a barrier made of a metal liquefied under the action of heat is then applied to the stranded wire, which creates the possibility that the material of the stranded wire is well coated by the liquid metal, which can also flow between the individual wires and, if necessary, alloy with them or can flow together.
  • the metal can preferably be liquefied and fused by welding, ultrasonic welding, resistance welding or also by soldering.
  • the metal used can also be an alloy or a solder, the latter in particular being provided with a flux.
  • the possibilities of creating a lasting liquid-tight barrier in this way are significantly better than by applying a resin, which due to its surface tension has difficulty penetrating between the wires. As the metal cools, it solidifies again and thus forms the desired barrier. This will also cool much faster and harden in this way. This will also penetrate into the shroud allowing a seal to the ends of the shroud.
  • a cover element protects the treated area and provides additional tightness and strength.
  • the barrier can also be formed by wrapping a strip of material, preferably a metal strip, around the wires of the stranded wire, which is then joined so thickly with a joining tool that the stranded wire becomes completely liquid-tight.
  • the cap element can be designed as a shrink tube, which contracts due to the effect of heat over the sealing point and due to its firm attachment to the casing seal the connection. While the current flow through the cable can take place unhindered through the sealing point, the ingress of water or liquid in general, ideally even an ingress of gas, is prevented in the long term.
  • the shrink tube can be treated in such a way that it also lies tightly against the barrier in order to completely prevent flow within the shrink tube. This is promoted by both a slightly thicker barrier and a slightly tighter shrink tube.
  • an adhesive to the shrink tube, which can be applied circumferentially around the inside of the tube wall in the region of the ends of the shrink tube up to the flush, better up to the overlapping sealing point.
  • This can preferably be a hot-melt adhesive, which liquefies when exposed to heat and solidifies when it cools down.
  • Such an adhesive ring can also be attached in the area of the barrier.
  • this can preferably be transparent, so that it can be seen through its wall whether its placement is correct.
  • the hot glue will also liquefy when you shrink the shrink tube, since heat is also required for the shrinking process. Bonding and shrinking become a single step.
  • a ring made of solder such as tin solder
  • solder such as tin solder
  • the ring of solder through which the stranded wire was previously inserted and positioned will liquefy, meet the stripped point of the strand and fill it out.
  • the heat shrink tubing will contract over the barrier and jacket, completely sealing the cable inboard and out.
  • this can also be implemented as a preferably insulated metal sleeve, which is also placed around the sealing point and is deformed by plastic deformation until it is in liquid-tight contact with the casing and/or barrier, optionally with an interposed adhesive.
  • deformation can take place with a joining tool.
  • this configuration is not part of the invention.
  • Cables with several cores are often used, whereby of course each individual strand has to be sealed separately.
  • an outer sheath usually has to be removed in one area in order to remove the sheathing of the individual strands, it makes sense to pull an elastic hose, particularly preferably a neoprene hose, over the strands that have been freed from the outer sheath and sealed in this area. possibly also in turn as a heat-shrink tubing to make the cable mechanically more durable and to protect the sealed areas.
  • a good possibility of inexpensively using a cap element prepared as described above is the use of a readily available soldered connector, which is known for the electrical connection of cable ends. Attaching such a solder joint to a stripped location in the cable reduces the steps of liquid-tight sealing per individual strand/wire to removing a strip of insulation, covering and positioning the solder joint and heating it with a heat gun. This is both extremely material-saving and can be managed with a minimal amount of work.
  • figure 1 shows a stranded wire 1, which consists of a bundle of individual wires that are surrounded by a sheath 2.
  • the sheathing 2 has been removed beforehand in a circumferential strip in the area of a sealing point 3, so that the individual wires of the stranded wire 1 are exposed.
  • a seal is now to be applied, which is intended to prevent moisture from penetrating into the cable, ie between the wire and the sheathing 2 and between the individual wires.
  • FIG 2 shows a second step for this, in which a barrier 4 is first attached in the area of the sealing point 3 .
  • the barrier 4 is formed from a solder which has been melted under the action of heat and applied to the stripped stranded wire 1 .
  • the solder connects to the individual wires of the stranded wire and runs due to the low surface tension, which is lowered by the flux present in the solder, such as rosin around and between the wires and wets them.
  • a liquid-tight barrier 4 is formed from the composite stranded wire that is produced in this way, which prevents liquid from leaking through the cable or the stranded wire 1 .
  • the barrier may be about the same or slightly thicker than the surrounding portions of the jacket and completely fills the recessed strip lengthwise of the cable.
  • the barrier 4 according to the invention cures within a few seconds.
  • FIG 3 finally shows how the cable is gripped by a cap element 5, which is a tubular heat-shrinkable tube and has, in the area of its ends, two rings of adhesive 6, so-called hot-melt adhesive, which is arranged on the inside of the cap element 5 and melts when exposed to heat.
  • the cap element 5 is made of a plastic that contracts when exposed to heat, which is also transparent, so that the positioning can also be checked from the outside. If the cap element 5 is correctly positioned, i.e. with the barrier 4 between the rings of adhesive 6, it is heated using a hot air gun so that the adhesive 6 liquefies and the shrink tube is pressed tightly against the casing 2 and the barrier 4 pulls together.
  • an additional, in particular centrally arranged ring of solder can optionally be arranged in the cap element 5, so that the steps of forming the barrier 4 and gluing with the adhesive 6, as well as pulling together the cap element 5, all of which are due to exposure to heat can be accomplished in a single operation. This saves a considerable amount of time and allows the use of inexpensive, prefabricated solder connectors in order to carry out the method according to the invention.
  • a method is thus described above for producing a cost-effective and as quick as possible seal for a cable, which enables high tightness with the least possible use of material and labor, as well as a corresponding cable.

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  • Cable Accessories (AREA)

Claims (8)

  1. Procédé pour la production d'un câble étanche aux liquides, lequel présente au moins un toron (1) composé d'une pluralité de fils individuels et muni d'une gaine (2), à un point d'étanchéité (3) une bande circonférentielle étant enlevée de la gaine (2) et les fils individuels de l'au moins un toron (1) étant comprimés dans la zone du point d'étanchéité (3) par un agent d'étanchéité en formant une barrière étanche aux liquides (4), et un élément enveloppant (5) étant connecté de manière étanche aux liquides sur au moins un côté du point d'étanchéité (3) en produisant une connexion d'étanchéité avec la gaine (2),
    la barrière (4) étant produite par l'application d'un métal liquéfié sous l'effet de la chaleur sur l'au moins un toron (1) dans la zone du point d'étanchéité (3), lequel pénètre entre les fils individuels et se solidifie lors de son refroidissement pour former la barrière (4), caractérisé en ce qu'un anneau formé à partir d'une soudure est associé à l'élément enveloppant (4) au centre de la face intérieure, à travers lequel l'au moins un toron (1) est introduit dans l'élément enveloppant (4), lequel est placé sur le point d'étanchéité (3) et lequel est chauffé ensemble avec l'élément enveloppant (5), et des anneaux marginaux, formés à partir d'un adhésif (6) pouvant être liquéfié sous l'effet de la chaleur, étant associés des deux côtés à l'élément enveloppant (5) sur la face intérieure, à travers lesquels l'au moins un toron (1) est introduit dans l'élément enveloppant (4) et lesquels sont placés de deux côtés du point d'étanchéité (3) sur la gaine (2) et sont chauffés ensemble avec l'élément enveloppant (5).
  2. Procédé selon la revendication 1, caractérisé en ce qu'un tube thermorétractable est utilisé comme élément enveloppant (5), lequel se contracte sous l'effet de la chaleur autour de la zone du point d'étanchéité (3) jusqu'à venir en contact étanche aux liquides avec la gaine (2).
  3. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'élément enveloppant (5) est aussi placé de manière étanche aux liquides avec la barrière (4).
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que qu'un adhésif (6) pouvant être liquéfié sous l'effet de la chaleur est associé à l'élément enveloppant (5) sur sa face intérieure, pour la connexion de l'élément enveloppant (5) avec la gaine (2) et/ou la barrière (4).
  5. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'une pluralité de torons (1) gainés peuvent être connectés au moyen d'un tube élastique.
  6. Procédé selon l'une des revendications précédentes, caractérisé en ce que le métal est fondu par soudage, soudage par ultrasons ou soudage par résistance, ou imprégné par soudure avec une soudure liquéfiée et ainsi connecté de manière étanche aux liquides avec le toron (1).
  7. Utilisation d'un connecteur de soudure comme élément enveloppant (5) selon l'une des revendications précédentes pour l'étanchéification étanche aux liquides d'un câble.
  8. Câble étanche aux liquides, lequel présente au moins un toron (1) composé d'une pluralité de fils individuels et muni d'une gaine (2), à un point d'étanchéité (3) une bande circonférentielle étant enlevée de la gaine (2) et l'au moins un toron (1) présentant une barrière (4) dans la zone du point d'étanchéité (3), laquelle est connectée de manière étanche aux liquides au point d'étanchéité (3) au moyen d'un élément enveloppant (5), l'élément enveloppant (5) présentant une autre connexion étanche aux liquides avec la gaine (2) au moins sur un côté du point d'étanchéité (3),
    la barrière (4) étant formée à partir d'un métal liquéfié sous l'effet de la chaleur et ensuite refroidi, lequel forme une barrière (4) étanche aux liquides qui pénètre les fils individuels, caractérisé en ce que l'élément enveloppant (5) est disposé de telle façon sur la barrière (4) que celle-ci se trouve au centre sur la face intérieure de l'élément enveloppant (5) et l'élément enveloppant (5) sur les bords des deux côtés étant placé sur la gaine (2) et collé sur celle-ci avec des anneaux composés d'un adhésif (6) liquéfié sous l'effet de la chaleur sur la face intérieure.
EP20192162.4A 2019-09-13 2020-08-21 Procédé de fabrication d'un câble étanche aux liquides, utilisation d'un connecteur de soudure correspondante et câble étanche aux liquides Active EP3879540B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019124741.1A DE102019124741B4 (de) 2019-09-13 2019-09-13 Verfahren zur herstellung eines flüssigkeitsdichten kabels, verwendung eines lötverbinders hierzu und flüssigkeitsdichtes kabel

Publications (3)

Publication Number Publication Date
EP3879540A1 EP3879540A1 (fr) 2021-09-15
EP3879540B1 true EP3879540B1 (fr) 2023-08-02
EP3879540C0 EP3879540C0 (fr) 2023-08-02

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EP20192162.4A Active EP3879540B1 (fr) 2019-09-13 2020-08-21 Procédé de fabrication d'un câble étanche aux liquides, utilisation d'un connecteur de soudure correspondante et câble étanche aux liquides

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DE (1) DE102019124741B4 (fr)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1267832A (en) * 1917-06-02 1918-05-28 Gen Electric Filled cable and fluid-stop.
DE893821C (de) * 1950-09-09 1953-10-19 Gen Electric Ummanteltes mehradriges Kabel und Verfahren zur Herstellung desselben
US3451609A (en) * 1967-08-24 1969-06-24 Us Air Force Heat shrinkable plastic soldering sleeve
JP2001057252A (ja) * 1999-08-19 2001-02-27 Sumitomo Wiring Syst Ltd 防水スプライス構造および該防水スプライス構造の形成方法
JP2007057252A (ja) 2005-08-22 2007-03-08 Iijima Kenchiku Jimusho:Kk 構造物の剛性推定方法
JP5117008B2 (ja) * 2006-03-22 2013-01-09 古河電気工業株式会社 電線芯線の止水処理構造及び電線芯線の止水処理方法
JP2008204644A (ja) * 2007-02-16 2008-09-04 Tyco Electronics Amp Kk 防水ハーネスの製造方法、ハーネス用防水剤、および防水ハーネス
JP5304001B2 (ja) * 2007-11-08 2013-10-02 住友電装株式会社 電線の止水方法及び該止水方法で形成された止水部を有する電線
JP5176533B2 (ja) * 2007-12-19 2013-04-03 住友電装株式会社 電線の止水方法及び該止水方法で形成された止水部を有する電線
JP2014127290A (ja) * 2012-12-26 2014-07-07 Yazaki Corp 圧着端子付きアルミ電線及びその製造方法
CN105097100A (zh) * 2015-09-15 2015-11-25 桂林绿元科技有限公司 一种内填充防水线束及其制作方法

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Publication number Publication date
DE102019124741A1 (de) 2021-03-18
EP3879540A1 (fr) 2021-09-15
DE102019124741B4 (de) 2021-05-12
EP3879540C0 (fr) 2023-08-02

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