EP1158542B1 - Cable coaxial flexible et procédé de fabrication de celui-ci - Google Patents
Cable coaxial flexible et procédé de fabrication de celui-ci Download PDFInfo
- Publication number
- EP1158542B1 EP1158542B1 EP01401370A EP01401370A EP1158542B1 EP 1158542 B1 EP1158542 B1 EP 1158542B1 EP 01401370 A EP01401370 A EP 01401370A EP 01401370 A EP01401370 A EP 01401370A EP 1158542 B1 EP1158542 B1 EP 1158542B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tape
- cable
- windings
- metal
- insulation
- 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.)
- Expired - Lifetime
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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
- H01B11/183—Co-axial cables with at least one helicoidally wound tape-conductor
Definitions
- the present invention relates to flexible coaxial cables and more particularly those of small section, which are usable in particular in medical imaging, or on portable transmission equipment such as computers, or for microwave transmissions.
- GB-A-2 130 430 discloses a flexible coaxial cable, which has a flexible conductive core, flexible insulation around said soul, a flexible conductor screen around said insulation and a possible flexible outer protective sheath.
- the screen of this cable is consisting of an internal metal ribbon, which is folded longitudinally around the insulation, an external metal ribbon, which is wound helically around the inner ribbon, and a possible metallic braid, which is then mounted around the outer ribbon and intended to allow make a connection to the screen at the ends of the cable. Ribbon edges internal overlap or are welded along the cable and those of the ribbon external overlap widely from one winding to the next.
- Each of the ribbons can be in a single metal or be made of composite material by example tinned copper or plastic / metal laminate.
- the outer ribbon serves to cover cracks or fissures, which are likely to appear in the ribbon internal under the effect of folds / unfolding of the cable. Its windings have however, they themselves tend to move during these folds / unfoldings of the cable, which modifies the contact resistance and the geometry assembly of the windings between them and on the inner ribbon, leading to a helical current path in this outer ribbon and limiting the performance of the screen.
- EP-A-0 236 096 also discloses a coaxial cable flexible, which avoids the disadvantages of the cable known from the aforementioned document and has for this purpose a screen with a laid copper ribbon longitudinally or helically wrapped around the insulation by having overlapping edges, a copper braid around this ribbon and a layer of metal closing the opening along the overlapping edges said ribbon and the interstices of the braid and coming to secure the braid and said tape, so that the screen is flexible and without openings.
- the coaxial cable thus obtained is flexible while having a screen performance.
- the layer of metal between the braid and the ribbon no uniform thickness all around the cable, due to its fluidity in the state molten.
- the method of manufacturing such a screen is long and dresser. As indicated in this document, it can not be realized in online, because of the very different speeds of setting up its different parts. The setting up of the braid being much slower than that of the other parties.
- a braid tight is advantageous for a good shutter possible of its interstices by melted metal, it makes it more difficult and uncertain a good flow of the molten metal through it for its bond to the ribbon and the closing the opening line of the edges of the ribbon.
- the use a molten tin bath requires safety devices to prevent risk of burns and inhalation of vapors.
- the present invention aims to provide a flexible coaxial cable having a reliable screen structure leading to excellent performance and stable over time and allowing a manufacturing process particularly simple and fast.
- a flexible coaxial cable comprising a core flexible conductor, flexible insulation around said core and a screen flexible metal around said insulation, said screen having a first metal ribbon with metal coating on at least a face thereof and wound helically around said insulation in having successive windings overlapping in a zone of continuous helical overlap along said cable, is characterized in that that said first ribbon is closed tightly on itself in any said area of overlap of said windings by said coating welding said windings to each other.
- a flexible coaxial cable having a flexible conductive core, flexible insulation around said core and a flexible metal screen around said insulation, said screen having a first metal ribbon and a second ribbon outer metal wound helically around said insulation and provided at least for one of them with a metallic coating on the least one face thereof
- each of said ribbons has windings with a continuous helical gap along said cable, what the windings of said second ribbon totally cover the dejoining the first ribbon and partially the windings of said first ribbon, and in that the overlapping areas of the windings of said ribbons are sealingly welded by said coating provided on to least one of the two faces opposite said ribbons.
- the subject of the invention is also a process for manufacturing said cable, characterized in that it consists in subjecting the cable provided with said screen to a peripheral welding heater of the windings of each ribbon component said screen, without external input welding material.
- the peripheral heating of welding is ensured by a high-frequency induction coil, mounted on a continuous production line of said screen.
- the cable comprises a conductive core flexible 1, a flexible insulation 2 covering said core and a flexible screen 3 surrounding said insulation.
- This flexible screen 3 is constituted by a metal strip 4, which is provided with a metal coating 5 on at least its outer face, is helically wrapped around the insulation, having its windings overlapping widely, and is closed tightly on itself by said coating welding said coils to each other in any their area of overlap.
- the overlap noted 6 of the windings is illustrated by 50%. In it can be less, however, being at least 20 to 25% and preferably of the order of 40%. It defines the area of overlap welded, without the addition of external material, which is helical and along the cable for a perfect seal and conservation of performance of the screen 3 thus formed.
- the conductive core 1 is a massive core single conductor or stranded stranded core, for example bare copper, tinned, silver or copper alloy or steel covered with copper.
- the insulation is a conventional or expanded dielectric, such as PTFE, FEP, PFA, PE or PP.
- the screen 4 is preferably made by a ribbon tinned copper, whose tin coating is melted for soldering direct from its coils to each other throughout their entire area of overlap.
- the ribbon 4 can be tinned on both sides.
- This cable is advantageously a coaxial cable diameter on the insulation 2 between 0.2 and 8 mm.
- the ribbon used 4 has a width of 0.2 to 15 mm and has a winding pitch of 0.12 to 10 mm, depending on the diameter of the insulation.
- the cable can of course be provided with an outer sheath of protection, which is optional and not shown.
- the ribbon 14 is advantageously constituted by a laminated ribbon plastic / metal whose plastic side is against insulation 2.
- Ribbons 16 and 18 are advantageously constituted by metal ribbons, for example made of copper, and provided with metal coating layers 17 and 19, by example tin or tin-based or, at least on their inner side.
- the ribbons 16 and 18 are wound in the same direction and at the same not, being shifted relative to each other on the order of 1 ⁇ 4 to 3 ⁇ 4 of the value of the winding pitch. They are welded to each other and to the ribbon 14 by the covers 17 and 19.
- each of the two helical ribbons 16 and 18 has its windings overlapping widely.
- the inner longitudinal ribbon 14 is optional.
- each of the helical ribbons 16 and 18 presents a 16 'and 18' between its windings, this gap being continuous along the cable.
- the coils of the outermost helical ribbon 18 overlap totally the splice 16 'of the ribbon 16 and partially the windings of this one.
- the longitudinal tape 14 is optional in the cable screen.
- the cable of FIG. 2 or 3 may also comprise a sheath external protection, not shown. Its dimensions and not winding of its helical ribbons are as defined for the cable of Figure 1.
- the cable may comprise a longitudinal ribbon (such as ribbon 14 in Figure 2 or 3) under the ribbon helical 4, the latter then being provided with an inner metal coating and optionally the outer metal coating 5.
- insulated conductor denoted by references 1 and 2 is taken from a coil 20 and passes through a tape station 22, which receives the tape 4 5.
- This tape is taken from a roll 21 and is helically wrapped around the isolated core, as described next to Figure 1.
- the cable provided with this ribbon then passes to a station 23 of welding of the ribbon windings to each other, in which the welding is carried out, without external contribution of welding material, directly by the coating 5.
- This welding station comprises at this effect an induction coil 24 fed at high frequency, which ensures the melting of the coating 5 and the resultant welding of the coils each to others.
- the cable provided with its screen 3 thus sealed is stored on a receiving coil 25.
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
- Manufacturing Of Electric Cables (AREA)
Description
- ledit premier ruban présente un pas d'enroulement compris entre 0,2 et 10 mm et ledit câble un diamètre sur ladite isolation compris entre 0,2 et 8 mm.
- ledit écran comporte un ruban métallique intérieur posé longitudinalement directement autour de ladite isolation, en ayant des bords se chevauchant.
- la figure 1 est une vue en perspective d'un premier mode de réalisation d'un câble coaxial flexible selon l'invention,
- la figure 2 est une vue en perspective d'un autre mode de réalisation d'un câble coaxial flexible selon l'invention,
- la figure 3 est une vue en perspective d'un autre mode de réalisation du câble selon l'invention,
- la figure 4 est une vue schématique illustrant le procédé de réalisation du câble de la figure 1.
- Un ruban intérieur 14, qui est posé en long directement autour de l'isolation 2 et a ses bords se recouvrant longitudinalement ainsi que représenté en 15.
- Un ruban intermédiaire 16 enroulé hélicoïdalement autour du ruban 14 et
- Un ruban extérieur 18 enroulé hélidoïdalement autour du ruban 16.
Claims (9)
- Câble coaxial flexible, comportant une âme conductrice flexible (1), une isolation flexible (2) autour de ladite âme et un écran métallique flexible (3, 13, 13') autour de ladite isolation, ledit écran comportant un premier ruban métallique (4, 16), pourvu d'un revêtement métallique (5, 17), sur au moins une face de celui-ci et enroulé hélicoïdalement autour de ladite isolation en présentant des enroulements successifs se chevauchant selon une zone de chevauchement hélicoïdale continue le long dudit câble, caractérisé en ce que ledit premier ruban (4) est fermé de manière étanche sur lui-même dans toute ladite zone de chevauchement desdits enroulements par ledit revêtement (5) soudant lesdits enroulements les uns aux autres.
- Câble selon la revendication 1, caractérisé en ce qu'il comporte un deuxième ruban métallique (18), enroulé hélicoïdalement sur ledit premier ruban (16) en ayant des enroulements se chevauchant les uns les autres pourvu d'un revêtement métallique (19) sur au moins celle de ses faces située en regard dudit premier ruban et ayant ses enroulements soudés entre eux et à ceux dudit premier ruban.
- Câble coaxial flexible, comportant une âme conductrice flexible (1), une isolation flexible (2) autour de ladite âme et un écran métallique flexible (13') autour de ladite isolation, ledit écran comportant un premier ruban métallique (16) et un deuxième ruban métallique extérieur (18) enroulés hélicoïdalement autour de ladite isolation et munis au moins pour l'un d'entre eux d'un revêtement métallique (17, 19) sur au moins une face de celui-ci, caractérisé en ce que chacun desdits rubans (16, 18) présente des enroulements à déjoint hélicoïdal (16' 18') continu le long dudit câble, en ce que les enroulements dudit deuxième ruban (18) recouvrent totalement le déjoint du premier ruban (16) et partiellement les enroulements dudit premier ruban, et en ce que les zones de recouvrement des enroulements desdits rubans sont soudées de manière étanche par ledit revêtement (17, 19) prévu sur au moins l'une des deux faces en regard desdits rubans.
- Câble selon l'une des revendications 1 à 3, caractérisé en que ledit écran comporte en outre un ruban métallique intérieur (14), posé longitudinalement directement autour de ladite isolation, en ayant des bords (15) se chevauchant.
- Câble selon la revendication 4, caractérisé en que ledit ruban intérieur (14) est en laminé plastique/métal.
- Câble selon l'une des revendications 1 et 3, caractérisé en ce que ledit premier ruban (4, 16) présente un pas d'enroulement compris entre 0,2 et 10 mm et ledit câble un diamètre sur ladite isolation compris entre 0,2 et 8 mm.
- Câble selon l'une des revendications 1 à 6, caractérisé en ce que chaque ruban muni du revêtement métallique est en cuivre étamé.
- Procédé de fabrication d'un câble selon l'une des revendications 1 à 7, caractérisé en ce qu'il consiste à soumettre le câble muni dudit écran à un chauffage périphérique de soudure des enroulements de chaque ruban composant ledit écran, sans apport extérieur de matière de soudure.
- Procédé selon la revendication 8, caractérisé en ce qu'il consiste à assurer ledit chauffage périphérique de soudure au moyen d'un bobinage à induction (24) alimenté en haute fréquence, qui est prévu sur une ligne de réalisation en continu dudit écran sur le câble et est traversé par ledit câble.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0006689 | 2000-05-25 | ||
FR0006689A FR2809528B1 (fr) | 2000-05-25 | 2000-05-25 | Cable coaxial flexible et procede de fabrication de celui-ci |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1158542A1 EP1158542A1 (fr) | 2001-11-28 |
EP1158542B1 true EP1158542B1 (fr) | 2005-08-10 |
Family
ID=8850604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01401370A Expired - Lifetime EP1158542B1 (fr) | 2000-05-25 | 2001-05-23 | Cable coaxial flexible et procédé de fabrication de celui-ci |
Country Status (5)
Country | Link |
---|---|
US (1) | US6583361B2 (fr) |
EP (1) | EP1158542B1 (fr) |
AT (1) | ATE301867T1 (fr) |
DE (1) | DE60112509T2 (fr) |
FR (1) | FR2809528B1 (fr) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6477767B1 (en) * | 1999-12-06 | 2002-11-12 | Hon Hai Precision Ind. Co., Ltd. | Method for removing a braiding layer of a coaxial cable |
JP3678179B2 (ja) * | 2001-07-25 | 2005-08-03 | 日立電線株式会社 | 2重横巻2心平行極細同軸ケーブル |
DE10303809A1 (de) * | 2003-01-31 | 2004-08-12 | Nexans | Datenübertragungskabel zum Anschluss an orstveränderliche Geräte |
US7844344B2 (en) | 2004-03-30 | 2010-11-30 | Medtronic, Inc. | MRI-safe implantable lead |
WO2007102853A1 (fr) * | 2006-03-09 | 2007-09-13 | Steward Billy J | Câble blindé à fil enroulé |
US20070210479A1 (en) * | 2006-03-13 | 2007-09-13 | Mcintyre Leo P | Cable manufacturing method |
GB0618108D0 (en) * | 2006-09-14 | 2006-10-25 | Technip France Sa | Subsea umbilical |
US9044593B2 (en) | 2007-02-14 | 2015-06-02 | Medtronic, Inc. | Discontinuous conductive filler polymer-matrix composites for electromagnetic shielding |
US8483842B2 (en) | 2007-04-25 | 2013-07-09 | Medtronic, Inc. | Lead or lead extension having a conductive body and conductive body contact |
US9037263B2 (en) | 2008-03-12 | 2015-05-19 | Medtronic, Inc. | System and method for implantable medical device lead shielding |
DE102009009558B4 (de) * | 2009-02-19 | 2013-08-29 | Heraeus Precious Metals Gmbh & Co. Kg | Gewickeltes Band als elektrischer Leiter für Stimulationselektroden |
JP5394507B2 (ja) * | 2009-03-06 | 2014-01-22 | サン−ゴバン パフォーマンス プラスティックス コーポレイション | 重ね合わせ型導電性ヘリカルスプリング |
EP2429633B1 (fr) | 2009-04-30 | 2014-12-17 | Medtronic, Inc. | Mise à la masse d'un blindage d'une dérivation médicale implantable |
US9728304B2 (en) * | 2009-07-16 | 2017-08-08 | Pct International, Inc. | Shielding tape with multiple foil layers |
SG179014A1 (en) * | 2009-10-02 | 2012-04-27 | Saint Gobain Performance Plast | Modular polymeric emi/rfi seal |
US8471149B2 (en) * | 2010-03-04 | 2013-06-25 | Technical Services For Electronics, Inc. | Shielded electrical cable and method of making the same |
JP5699872B2 (ja) * | 2011-01-24 | 2015-04-15 | 日立金属株式会社 | 差動信号伝送用ケーブル |
US9404249B2 (en) * | 2012-01-18 | 2016-08-02 | Adc Acquisition Company | Ultra light fiber placed truss |
WO2013158189A1 (fr) | 2012-04-19 | 2013-10-24 | Medtronic, Inc. | Corps de conducteurs appariés à usage médical comportant des blindages conducteurs tressés ayant des valeurs de paramètres physiques différentes |
JP5825219B2 (ja) * | 2012-07-31 | 2015-12-02 | 日立金属株式会社 | 差動信号伝送用ケーブル、多芯差動信号伝送用ケーブル、及び差動信号伝送用ケーブルの製造方法ならびに製造装置 |
US9993638B2 (en) | 2013-12-14 | 2018-06-12 | Medtronic, Inc. | Devices, systems and methods to reduce coupling of a shield and a conductor within an implantable medical lead |
CA2946798A1 (fr) * | 2014-04-25 | 2015-10-29 | Leoni Kabel Holding Gmbh | Cable de donnees |
WO2016014427A1 (fr) | 2014-07-23 | 2016-01-28 | Medtronic, Inc. | Procédés de protection de dérivations médicales implantables et d'extension de dérivation médicale implantable |
EP3191175B1 (fr) | 2014-07-24 | 2022-03-02 | Medtronic, Inc. | Appareil de blindage de sondes médicales implantables et d'extensions de sondes |
US9691524B2 (en) * | 2014-12-08 | 2017-06-27 | Nkt Hv Cables Gmbh | Systems and methods for applying metallic laminates to cables |
JP2016201273A (ja) * | 2015-04-10 | 2016-12-01 | 日立金属株式会社 | 差動信号伝送ケーブル及び多芯差動信号伝送ケーブル |
US11848120B2 (en) | 2020-06-05 | 2023-12-19 | Pct International, Inc. | Quad-shield cable |
EP3971915A1 (fr) | 2020-09-18 | 2022-03-23 | Nexans | Barrière radiale multicouches contre l'eau pour une fabrication rapide |
EP4016552A1 (fr) * | 2020-12-15 | 2022-06-22 | Nexans | Barrière d'eau sans plomb |
CN112803170A (zh) * | 2021-03-17 | 2021-05-14 | 江苏亨鑫科技有限公司 | 一种应急用漏泄同轴电缆 |
CN115939720B (zh) * | 2023-01-31 | 2023-07-11 | 滁州润翰微波科技有限公司 | 一种柔性定向泄漏同轴电缆的生产工艺及生产设备 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3636234A (en) * | 1969-12-04 | 1972-01-18 | United States Steel Corp | Communication cable |
US3644662A (en) * | 1971-01-11 | 1972-02-22 | Gen Electric | Stress cascade-graded cable termination |
USRE30228E (en) * | 1973-02-23 | 1980-03-11 | General Cable Corporation | Power cable with corrugated or smooth longitudinally folded metallic shielding tape |
US4340771A (en) * | 1981-03-16 | 1982-07-20 | Siecor Corporation | Communications cable having combination shielding-armor member |
US4694122A (en) * | 1986-03-04 | 1987-09-15 | Cooper Industries, Inc. | Flexible cable with multiple layer metallic shield |
US4894488A (en) * | 1988-03-21 | 1990-01-16 | Comm/Scope, Inc. | High frequency signal cable with improved electrical dissipation factor and method of producing same |
US5293001A (en) * | 1992-04-14 | 1994-03-08 | Belden Wire & Cable Company | Flexible shielded cable |
US5442131A (en) * | 1993-07-23 | 1995-08-15 | Borgwarth; Dennis | High energy coaxial cable cooling apparatus |
US5574260B1 (en) * | 1995-03-06 | 2000-01-18 | Gore & Ass | Composite conductor having improved high frequency signal transmission characteristics |
-
2000
- 2000-05-25 FR FR0006689A patent/FR2809528B1/fr not_active Expired - Fee Related
-
2001
- 2001-05-23 DE DE60112509T patent/DE60112509T2/de not_active Expired - Fee Related
- 2001-05-23 EP EP01401370A patent/EP1158542B1/fr not_active Expired - Lifetime
- 2001-05-23 AT AT01401370T patent/ATE301867T1/de not_active IP Right Cessation
- 2001-05-24 US US09/863,310 patent/US6583361B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2809528B1 (fr) | 2002-07-19 |
FR2809528A1 (fr) | 2001-11-30 |
US6583361B2 (en) | 2003-06-24 |
EP1158542A1 (fr) | 2001-11-28 |
DE60112509T2 (de) | 2006-06-01 |
DE60112509D1 (de) | 2005-09-15 |
US20020003046A1 (en) | 2002-01-10 |
ATE301867T1 (de) | 2005-08-15 |
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