EP1158542A1 - 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
- EP1158542A1 EP1158542A1 EP01401370A EP01401370A EP1158542A1 EP 1158542 A1 EP1158542 A1 EP 1158542A1 EP 01401370 A EP01401370 A EP 01401370A EP 01401370 A EP01401370 A EP 01401370A EP 1158542 A1 EP1158542 A1 EP 1158542A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- ribbon
- windings
- screen
- 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.)
- Granted
Links
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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 can be used in particular in medical imaging, or on portable transmission equipment such as than 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 core, a conductive screen also flexible around said insulation and a possible flexible protective outer sheath.
- the screen of this cable is consisting of an internal metal strip, which is folded longitudinally around the insulation, an external metal tape, which is wrapped helically around the internal ribbon, and a possible metallic braid, which is then mounted around the outer tape and provided to allow make a connection to the screen at the ends of the cable.
- Each of the ribbons can be made of a single metal or be made of composite material by example in tinned copper or plastic / metal laminate.
- the external ribbon is used to cover cracks or cracks, which may appear in the tape internal under the effect of kinks / folds in the cable. Its windings have however, they themselves tend to move during these folds / unfoldings of the cable, which changes the contact resistance and the geometry assembly of the windings between them and on the internal tape, 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 drawbacks of the cable known from the aforementioned document and has for this purpose a screen comprising a copper ribbon laid longitudinally or helically wrapped around the insulation having overlapping edges, a copper braid around this ribbon and a layer of metal closing the opening along the overlapping edges of said ribbon and the interstices of the braid and joining the braid and said ribbon, so that the screen is flexible and without openings.
- the coaxial cable thus obtained is flexible while having a screen efficient.
- the metal layer between the braid and the ribbon is not no uniform thickness all around the cable, due to its fluidity in the state molten.
- the manufacturing process for such a screen is long and little dresser. As indicated in this document, it cannot be carried out in continuous online, due to the very different speeds of setting up its different parts.
- the installation of the braid being much slower than that of other parties.
- a braid tight is advantageous for a good possible obturation of its interstices by molten metal, on the other hand it makes a good and more difficult and uncertain flow of molten metal through it for its binding to the ribbon and the closing the opening line of the edges of the ribbon.
- the use of a molten tin bath requires safety devices to avoid risk of burns and inhalation of vapors.
- the object of the present invention is to produce 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 conductive, flexible insulation around said core and a screen flexible metal around said insulation, said screen comprising a first metal strip provided with a metal coating on at least one side of it and helically wrapped 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 tightly closed on itself in all of said overlap area 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 comprising a first metallic ribbon and a second ribbon metallic exterior wound helically around said insulation and provided at least for one of them with a metallic coating on at at least one side thereof
- each of said ribbons has windings with continuous helical junction along said cable, in that the windings of said second ribbon completely cover the backing of the first ribbon and partially the windings of said first ribbon, and in that the overlap zones of the windings of said ribbons are sealed by said coating provided on the minus one of the two opposite faces of said ribbons.
- the invention also relates to a method for manufacturing said cable, characterized in that it consists in subjecting the cable provided with said screen to a peripheral heating of welding of the windings of each ribbon composing said screen, without external input of solder material.
- the peripheral welding heating is provided. by a high frequency induction winding, mounted on a continuous production line of said screen.
- the cable has a conductive core flexible 1, 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 metallic coating 5 on at least its outer face, is wrapped helically around the insulation, having its windings overlapping widely, and is tightly closed on itself by said coating welding said windings to each other throughout their overlapping area.
- the overlap noted 6 of the windings is illustrated by 50%. In practical it may be less, being however at least 20 to 25% and preferably around 40%. It defines the overlap area welded, without any external material, which is helical and continues the along the cable for perfect sealing and conservation of performance of the screen 3 thus formed.
- the conductive core 1 is a solid core single conductor or a stranded stranded core, for example of bare copper, tinned, silver or copper alloy or steel coated with copper.
- the insulation is a conventional or expanded dielectric, such as PTFE, FEP, PFA, PE or PP.
- the screen 4 is preferably produced by a ribbon of tinned copper, the tin coating of which is melted for soldering direct from its windings to each other throughout their area of overlap.
- the ribbon 4 can be tinned on both sides.
- This cable is advantageously a coaxial cable of diameter over 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 insulation diameter.
- the cable can of course be provided with an outer sheath of protection, which is optional and not shown.
- the tape 14 is advantageously constituted by a laminated tape plastic / metal with the plastic side against the insulation 2.
- the tapes 16 and 18 are advantageously constituted by metal ribbons, for example made of copper, and provided with metallic coating layers 17 and 19, by example of tin or tin-based or, at least on their inner side.
- Ribbons 16 and 18 are wound in the same direction and at the same not, being offset relative to each other by around 1 ⁇ 4 to 3 ⁇ 4 of the value of the winding step. They are welded to each other and to the tape 14 by coatings 17 and 19.
- each of the two helical bands 16 and 18 has its windings largely overlapping.
- the inner longitudinal strip 14 is optional.
- each of the helical bands 16 and 18 has a 16 'and 18' gap between its windings, this gap being continuous along the cable.
- the outermost helical ribbon windings 18 overlap totally the gap 16 'of the ribbon 16 and partially the windings of this one.
- the longitudinal strip 14 is optional in the cable screen.
- the cable of Figure 2 or 3 may also have a sheath protective exterior, not shown. Its dimensions and the pitch of its helical ribbons are as defined for the cable Figure 1.
- the cable may include a longitudinal tape (such as tape 14 in Figure 2 or 3) under the tape helical 4, the latter then being provided with an internal metallic coating and optionally of the exterior metallic coating 5.
- a longitudinal tape such as tape 14 in Figure 2 or 3
- the latter then being provided with an internal metallic coating and optionally of the exterior metallic coating 5.
- FIG. 4 The process for continuously producing screen 3 on the core online conductor 1 provided with its insulation 2 is illustrated in FIG. 4.
- the core insulated conductor noted by references 1 and 2 is taken from a coil storage 20 and passes through a tape station 22, which receives the tape 4 provided with its coating 5.
- This ribbon is taken from a roller 21 and is helically wrapped around the insulated core, as described opposite Figure 1.
- the cable with this ribbon then passes through a station 23 of soldering the ribbon windings to each other, in which the welding is carried out, without external input of welding material, directly by the coating 5.
- This soldering station comprises at this effect an induction coil 24 supplied at high frequency, which ensures the fusion of the coating 5 and the resulting weld of the windings to others.
- the cable provided with its screen 3 thus tightly closed is stored on a take-up reel 25.
Landscapes
- Communication Cables (AREA)
- Insulated Conductors (AREA)
- Manufacturing Of Electric Cables (AREA)
Abstract
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 true EP1158542A1 (fr) | 2001-11-28 |
EP1158542B1 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 |
US20100224400A1 (en) * | 2009-03-06 | 2010-09-09 | Saint-Gobain Performance Plastics Corporation | Overlap helical conductive spring |
EP2821097B1 (fr) | 2009-04-30 | 2017-10-04 | Medtronic Inc. | Terminaison d'un blindage dans un fil médical implantable |
US9728304B2 (en) * | 2009-07-16 | 2017-08-08 | Pct International, Inc. | Shielding tape with multiple foil layers |
RU2504933C2 (ru) * | 2009-10-02 | 2014-01-20 | Сэнт-Гобен Перформанс Пластикс Корпорейшн | Уплотнение, содержащая его система и способ изготовления уплотнения |
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 |
US9463317B2 (en) | 2012-04-19 | 2016-10-11 | Medtronic, Inc. | Paired medical lead bodies with braided conductive shields having different physical parameter values |
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 |
EP3134905B1 (fr) * | 2014-04-25 | 2020-03-18 | LEONI Kabel GmbH | Câble de données |
EP3171931B1 (fr) | 2014-07-23 | 2021-11-10 | Medtronic, Inc. | Procédés de protection de dérivations médicales implantables et d'extension de dérivation médicale implantable |
US10155111B2 (en) | 2014-07-24 | 2018-12-18 | Medtronic, Inc. | Methods of shielding implantable medical leads and implantable medical lead extensions |
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3636234A (en) * | 1969-12-04 | 1972-01-18 | United States Steel Corp | Communication cable |
US4694122A (en) * | 1986-03-04 | 1987-09-15 | Cooper Industries, Inc. | Flexible cable with multiple layer metallic shield |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 EP EP01401370A patent/EP1158542B1/fr not_active Expired - Lifetime
- 2001-05-23 AT AT01401370T patent/ATE301867T1/de not_active IP Right Cessation
- 2001-05-23 DE DE60112509T patent/DE60112509T2/de not_active Expired - Fee Related
- 2001-05-24 US US09/863,310 patent/US6583361B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3636234A (en) * | 1969-12-04 | 1972-01-18 | United States Steel Corp | Communication cable |
US4694122A (en) * | 1986-03-04 | 1987-09-15 | Cooper Industries, Inc. | Flexible cable with multiple layer metallic shield |
Also Published As
Publication number | Publication date |
---|---|
ATE301867T1 (de) | 2005-08-15 |
EP1158542B1 (fr) | 2005-08-10 |
DE60112509D1 (de) | 2005-09-15 |
FR2809528B1 (fr) | 2002-07-19 |
US20020003046A1 (en) | 2002-01-10 |
US6583361B2 (en) | 2003-06-24 |
FR2809528A1 (fr) | 2001-11-30 |
DE60112509T2 (de) | 2006-06-01 |
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