EP0554159A1 - Abgeschirmte Fischgratverbindung - Google Patents

Abgeschirmte Fischgratverbindung Download PDF

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Publication number
EP0554159A1
EP0554159A1 EP93400181A EP93400181A EP0554159A1 EP 0554159 A1 EP0554159 A1 EP 0554159A1 EP 93400181 A EP93400181 A EP 93400181A EP 93400181 A EP93400181 A EP 93400181A EP 0554159 A1 EP0554159 A1 EP 0554159A1
Authority
EP
European Patent Office
Prior art keywords
branch
braid
branches
braids
section
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
EP93400181A
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English (en)
French (fr)
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EP0554159B1 (de
Inventor
Pascal Clouet
François Vaille
André Viaud
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.)
Filotex SA
Original Assignee
Filotex 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 Filotex SA filed Critical Filotex SA
Publication of EP0554159A1 publication Critical patent/EP0554159A1/de
Application granted granted Critical
Publication of EP0554159B1 publication Critical patent/EP0554159B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01B7/0045—Cable-harnesses

Definitions

  • the present invention relates to armored connections of particular configuration and called fishbone.
  • This type of link is used to serve a plurality of different destinations from a so-called origin common point. It is used in particular to supply power and / or information / dialogue to the various organs of a system, from the point of origin. It has a bundle of conductors, defining between them a trunk starting from the point of origin and different branches starting from the trunk. These branches correspond to the different destinations and are connected to the various organs of the system. They define branches along the trunk and can have bifurcations for their connection to different bodies.
  • connection has a large diameter trunk at the start of the point of origin, which is reduced as the branches leave when we move away from this point of origin , and with slender branches starting from the trunk.
  • the branches of the branches on the trunk define successive sections, the end section opposite the point of origin forming the last branch of the link.
  • the ratio between the diameters of the two extreme sections of the trunk is often high and very frequently more than 20.
  • the branches can themselves be with different number of conductors from each other and consequently have different diameters. Their diameter is much smaller than that of the section from which they depart respectively.
  • connections require, in a good number of applications, to have a high performance protection against electromagnetic disturbances, in addition to a high resistance to shocks, vibrations, thermal and / or chemical aggressions, in particular. This is particularly the case for their use on land, air or sea vehicles.
  • This overall braiding is often textile, or sometimes metallic. In general, it gives good mechanical behavior to the beam formed, but cannot directly provide high electromagnetic protection, in particular at the branch lines.
  • a first of these techniques consists in starting from sections of cables which correspond to the sections and branches of the bundle and are initially independent and individually shielded by a metallic braiding and to connect them to each other by shielded connection boxes.
  • the bundle is thus formed simultaneously with the shielding of the branch lines, produced by the connection boxes.
  • the bundle formed and shielded obtained by this first technique has excellent electromagnetic performance, due on the one hand to the homogeneity of the sections of initial shielded cables, and on the other hand to the low transfer impedance due to the connection boxes. . It also has generally satisfactory mechanical characteristics. On the other hand, it is heavy and is also expensive, bulky, complex and not very flexible, because of its realization made from shielded cables, which are different from each other, and from connection boxes which are also different. each other.
  • the second technique consists in shielding the branches and the different sections of the trunk with shielding metal braids executed beforehand and threaded on each of them, and to thread metallized heat-shrinkable sleeves on the different branches to ensure shielding continuity with the aforementioned braids.
  • the shielded connection according to this second technique is lighter, less expensive and less bulky, as well as simpler and more flexible than that resulting from the first technique.
  • its electromagnetic performance is poor and often insufficient, as well as its mechanical characteristics, in particular of resistance to vibrations, the latter then reducing the electromagnetic protection ensured accordingly.
  • the shielding mode in accordance with this second technique, is not very easy to implement and even almost impossible when the fishbone connection has a large number of branches and under these conditions has very significant relationships between the diameters of the different sections. or between the diameters of the sections closest to the point of origin and the corresponding branches.
  • the object of the present invention is to avoid the drawbacks of these known techniques, for obtaining a shielded link called a fishbone of high electromagnetic performance and high mechanical strength.
  • a fishbone comprising a bundle of conductors, the conductors of which all start from a common point known as of origin and form a trunk and multiple branches along the trunk, by defining branches on the trunk at the start of the branches and sections on the trunk between the branches, the sections being of reduced diameter at each branch, from the trunk, and further comprising armor assemblies for the trunk, branches and branches, characterized in that said shielding assemblies consist exclusively of braids for shielding branches and sections and in that said shielding braids comprise on the one hand at least a first braid, executed over the length of each individual branch concerned, with in addition a first development carried out on the branch at the start of the branch and on an adjoining part of at least the u n sections on either side of this branch, and on the other hand at least one second braid executed substantially over the length of each individual section with, in addition, except for each second braid of the section of smaller diameter and said terminal, a second development carried out on the terminal part of the adjacent section of smaller diameter, covering the end
  • FIG. 4 The overall view of the shielded connection according to the present invention is illustrated in FIG. 4.
  • This connection is of a particular configuration for which it is said to be fishbone. It comprises a bundle made up of conductors which are insulated and are stranded, as shown in FIGS. 1 and 2 in particular, and directly define its fishbone shape.
  • the conductors all leave from the same common point known as of origin 0. They form a main trunk P starting from this point of origin and multiple branches B starting from the trunk, along it, noted B1 to B10 from the point of origin. They define successive branches E1 to E9 on the trunk, starting from the individual branches, and successive sections T1 to T9 corresponding to the trunk P, between the branches.
  • Each branch starts from the trunk, at a branch, as translated by the same reference numeral accompanying the letter B for this branch, the letter E for the branch and the letter T for the section concerned.
  • the terminal section of the trunk, opposite the point of origin, directly forms the last branch B10 of the link.
  • the terminal section, or last branch B10, is that of smaller diameter of the link.
  • the branches are with several stranded conductors and may themselves have one or more bifurcations, as shown on branch B7 divided into two secondary branches B'7 and B''7 at the bifurcation or secondary branch E'7.
  • the shielding of the fishbone connection is carried out exclusively by metal braiding braids. These braids are methodically executed first on the individual branches, then on the individual sections, starting with the section of smaller diameter, excluding the terminal section or last branch which can be treated as a branch.
  • the braids for shielding the branches are said to be the first braids, those for the sections are said to be the second braids. This shielding mode is described in detail with reference to FIGS. 1A to 1G.
  • FIG. 1A the part of the connection before shielding is illustrated, at the level of the only branch E5 in FIG. 4.
  • the upstream section that is to say on the side of the point of origin, and the following section , which are on either side of this branch E5, are designated by their references T5 and T6 in Figure 4.
  • the branch from the trunk between these two sections is the branch B5.
  • the fishbone connection is bare.
  • FIG. 1B illustrates a preliminary step, preferable but not essential, for processing the branch line E5. It is highly desirable when the diameter of the branch has a very large difference compared to that of one or other of the sections on either side of the branch.
  • This preliminary treatment consists in making a packing braid 1 on the branch E5, on the adjoining part or starting foot of the branch B5 and on the adjoining part of one of the two sections, which is preferably the one having more small diameter of the two, ie of the T6 section.
  • the threads of the packing braid can be textile but are preferably metallic.
  • Figures 1C and 1D illustrate the shielding of the branch B5, produced in this example in two successive stages using a first initial braid 2 and a first final braid 3. These two first braids overlap one the other on the length of the branch. Each of them also has a flourishing 2A, 3A according to that of the first two braids considered, which is produced on the branch and the adjoining part of one of the two sections T5 and T6.
  • the opening 2A of the first initial braid 2 is carried out on the branch E5 and the adjoining part of the following section T6, covering the packing braid 1.
  • the opening 3A of the first final braid is carried out on the branch E5 and on the adjoining part of the upstream section T5.
  • Each first shielding braid 2 or 3 is executed directly on the branch and its development 2A or 3A directly on the section concerned and the branch. It is carried out starting with the development. It has a number of braiding and braiding pitch metal wires, which are adapted to the diameter of the branch for its shielding, the blooming, however, preferably being carried out with a shorter pitch and adapted to the diameter of the section on which it s 'extended, to allow correct shielding.
  • the first shielding braids 2 and 3 of branch B5 constitute a double layer shielding.
  • the shielding of this branch can be monolayer and be constituted by one of the first two braids and preferably by the only first initial braid 2.
  • the different branches of the link are shielded one after the other, in a similar manner to branch B5, before shielding the trunk.
  • the latter is carried out by treating the successive sections one after the other, starting with that of smaller diameter.
  • each section such as the section T5 is carried out in two successive stages, illustrated in FIGS. 1F and 1G. It follows the final step of shielding the adjacent section of smaller diameter, ie the section T6, illustrated in FIG. 1E.
  • FIG. 1E the section T6 is shown covered with a second final braid 4.
  • the end of this second final braid comes just after the opening 2A of the first braid 2 ( Figure 1C) on this section or can come beyond it by covering it, at least partially.
  • This second final braid 4 of the section T6 is similar to that final of each of the other sections and is specified with reference to FIG. 1G.
  • FIG. 1F which corresponds to the initial shielding step of the section T5, shows this section covered with a second initial shielding braid 5.
  • This second initial braid, executed on the section T5, has a blooming 5A on the section T6 , covering the end of the second final braid 4 of the section T6.
  • FIG. 1G corresponding to the final shielding step of the section T5, shows that this step consists in making the second final braid 6 on this section, with a particular development noted 6B on the section T5.
  • This opening 6B covers the opening 5A of the second initial braid (FIG. 1F) and also extends beyond, over one or more centimeters on the second final braid 4 of the section T6. It is executed first with a back and forth movement of braiding, by making a self-locking loop or hem starting from this second final braid.
  • the second shielding braids 5 and 6 of the section T5 constitute a double layer shielding.
  • this shielding can be monolayer and then provided by the second final braid 6 only.
  • the succession of the shielding operations of the sections is carried out systematically, with the blooming of each of the second final braids of the different sections coming to cover and block the end of the second final shielding braid previously executed on the adjacent section of larger diameter. lower than that of the section considered.
  • These blocking flourishes of the second final braids ensure overall strength and continuity of the armor of the trunk and of the branches, thus rendered high performance and quite comparable to a continuous armor made along a single cable.
  • These second shielding braids are executed as for the first braids, with a number of wires and a braiding pitch adapted to the diameter of the section that each of them covers.
  • Each development of these second braids is performed with the same number of threads as the second braid to which it belongs, but preferably with a different braiding pitch, which can be smaller or larger than that of this second braid and is adapted to the diameter resulting from the previous operations of the part that it covers.
  • Figure 2 is a schematic view illustrating the part of the connection which was shielded according to the steps of Figures 1.
  • the packing braid and the first and second shielding braids have been illustrated in axial half-section on the strands of conductors defining the section T5, the branch B5 and the section T6, each by a single line and therefore without proper thickness.
  • These lines translating the axial half-sections of the different braids have themselves been located on one side or the other of the branch or of the section concerned for a better understanding and a greater clarity of their representation.
  • the excess thicknesses created by the packing braid 1 and the flourishing 2A on the section T6 correspond to those resulting from the two second shielding braids 4 and 7 of this section.
  • the openings 5A and 6B of the second braids 5 and 6 of the section T5 form additional thicknesses on the end of the section T6, simply making this end of the section T6 substantially of the same diameter as that of the section T5.
  • Figure 3 corresponds to Figure 2, with further provisions provided at the ends of the braids which are underlying the second final braid 6 and possibly the initial 5 shielding.
  • These additional arrangements consist of a first metal strip 8 surrounding the ends of the packing braid 1 and second shielding braids 4 and 7, on the section T6, and in a second metal strip 9 surrounding the end of the opening 5A of the second initial braid 5 of the section T6.
  • the strip 8 is mounted in place before the execution of the second initial braid 5, so that the opening 5A completely covers it.
  • the strip 9 is mounted in place before the execution of the second final braid 6, so that the opening 6B completely covers it.
  • the latter can also be mounted on the starting end of the opening 6B, which it covers with the end of the opening 5A, when these two ends are end to end and not overlapping as shown schematically in Figure 2.
  • These strips provide protection for the shielding braids which cover them. They prevent the ends of the wires of the underlying terminal parts of the braids previously executed, which have natural straightening or peaks outwards, from being inserted through the second shielding braids and through an additional insulating sheathing. provided where appropriate on the link.
  • These strips 8 and 9 are preferably self-adhesive on the ends of the braids which they cover, for a terminal held in place, in particular during the execution of the development of the second shielding braid on each of them.
  • the shielding of the link is very schematically illustrated, taking into consideration only the branches to the right of the X axis on the trunk and the only branch B8 to the left of this axis and ignoring the existence of branches B2, B4 and B6, for greater clarity of the diagram.
  • This shielding has been illustrated as a single layer on each branch taken into consideration and on each section, by identifying the first braid 2 for shielding the branch B5, the second braid 4 for shielding the section T6 and the second braid 6 for shielding the section T5.
  • the shielded connection according to the invention is of continuous and almost uniform appearance and without roughness.
  • FIG. 5 represents one of the branches of the shielded link of FIG. 4, for example the branch B2, which is equipped with a terminal connector 10.
  • the shielding braid of this branch has also been designated with the reference 2, this braid being in this example monolayer and then corresponding to the first initial shielding braid of the aforementioned branch B5.
  • This connector is as such known, but is integrated into the branch B2. It is connected to the end of branch B2 before its shielding.
  • It has a body in two parts, one rear 11 and the other front 12 which are assembled to one another by a connecting nut 13.
  • the rear part defines an expansion and distribution chamber of the conductors of the strand defining the branch B2, the excess length of the conductors possibly being cut off. It has a rear end which forms a rear collar 14 for entry of the conductors into the chamber.
  • the front part 12 comprises a plurality of contacts 15 mounted and retained in an insulating block 16, to which the conductors of branch B2 are connected.
  • the contacts are also protruding on the insulating block in the front face of the connector.
  • a front peripheral nut 17 on this connector ensures its locking on a complementary connector at the connection point of this branch.
  • the shielding braid 2 of this branch has an additional development 2C, produced continuously with it, directly on the rear collar 14 of the connector 10 previously connected to the branch.
  • This blooming 2C is subsequently blocked on the collar by a suitable fixing means, such as a ring 18 or a clamp, made of metal with shape memory retractable by cryogenics or magnetostriction.
  • a flexible metal protective strip 19 can be interposed between it and the flourishing 2C, on the ends of the wires of the flourishing 2C, in order to avoid pitting which the ends of these wires can cause.
  • FIG. 6 is a variant given with respect to FIG. 5, as regards each of the different branches of the link or part of the branches, for example branch B3.
  • the branch B3 is without terminal connector, but is pre-equipped with an expander 20 for the subsequent mounting of the connector after the shielding of the link.
  • the expander 20 is positioned at the location where the connector will be connected.
  • the shielding braid also designated under the reference 2 is then executed, with the expander in place on the strand of conductors of branch B3, during the same braiding operations.
  • a positioner 21 is held substantially at the end of the strand of conductors of the branch. It serves as a front stop for the expander, then correctly positioned, and prevents it from moving forwards and unexpectedly withdrawing it during braiding operations or subsequently from below the shielding braid.
  • This expander has identical transverse dimensions, as rigorously as possible, to those of the rear end of the connector.
  • the so-called rear end 20A of the expander, the innermost on the branch, is profiled by having a rounded or conical shape. It allows an easy and smooth transition of the shielding braid between the expander and the conductor strand, of different transverse dimensions.
  • the expander is made of hard material, which can be metal or plastic.
  • the shielding braid 2 is executed continuously over the length of the branch already carrying the expander. It is thus preformed on the expander with the transverse dimensions of the latter and thereby that of the rear end of the connector.
  • the braiding is carried out with different braiding steps on the expander and on the conductor strand, with a continuous variation possible at the transition, to allow if necessary and in particular when there is a significant difference in transverse dimensions between them, obtaining high performance protection over the entire length of the branch, including the widener.
  • the shielding braid 2 completely covers the expander, or may cover it only partially.
  • the widener 20 also serves as a bearing surface for cutting to the correct length of the shielding braid 2. At the same time it protects the connectors that it covers from injuries that this cutting could cause.
  • the section plane of the shielding braid is marked at 22, at a distance from the rear end of the expander substantially equal to the length of the rear connection end of the connector. This cut eliminates the excess braid length and removes the expander to slide the rear end of the connector under the shielding braid without deforming it.
  • this shielding braid 2 advantageously comprises a self-locking loop 24 produced with the execution of the braid.
  • This loop is almost adjacent to the rear end 20A of the expander and extends over the strand of conductors defining the branch, over a few centimeters.
  • This loop prevents any slip of the shielding braid on the conductors and / or its possible multiple layers on each other, in particular during the cutting of excess length of the braid and the positioning and connection of the connector. . It directly acts as a ring for fixing the shielding braid to the conductor strand. It is also opposed to the relative displacements of the shielding braid and the strand, with the possible mechanical stresses in vibration under certain conditions of use, avoiding friction and the resulting degradations of the insulators of the conductors.

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  • Insulated Conductors (AREA)
  • Prostheses (AREA)
EP93400181A 1992-01-29 1993-01-26 Abgeschirmte Fischgratverbindung Expired - Lifetime EP0554159B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9200951 1992-01-29
FR9200951A FR2686728B1 (fr) 1992-01-29 1992-01-29 Liaison blindee dite en arete de poisson.

Publications (2)

Publication Number Publication Date
EP0554159A1 true EP0554159A1 (de) 1993-08-04
EP0554159B1 EP0554159B1 (de) 1996-01-03

Family

ID=9426103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400181A Expired - Lifetime EP0554159B1 (de) 1992-01-29 1993-01-26 Abgeschirmte Fischgratverbindung

Country Status (5)

Country Link
US (1) US5414212A (de)
EP (1) EP0554159B1 (de)
DE (1) DE69301157T2 (de)
ES (1) ES2082597T3 (de)
FR (1) FR2686728B1 (de)

Cited By (1)

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FR2728114A1 (fr) * 1994-12-13 1996-06-14 Eurocopter France Procede pour la realisation d'une gaine de blindage sur un faisceau de conducteurs electriques et faisceau ainsi obtenu

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FR2728113A1 (fr) * 1994-12-13 1996-06-14 Eurocopter France Faisceau de conducteurs electriques blinde et son procede de realisation
GB9808688D0 (en) * 1998-04-23 1998-06-24 Bicc Plc Method of making electricity supply installations
US20040144559A1 (en) * 2003-01-27 2004-07-29 Matthew Menze Flexible braided electrical cable bundle
GB2432710B (en) * 2005-11-29 2008-04-30 Icore Internat Ltd Electrical-cable shielding
US7632147B2 (en) * 2008-03-04 2009-12-15 Nexus, Incorporated Shielded cable plug and jack assembly
US20150090491A1 (en) * 2013-10-02 2015-04-02 Tyco Electronics Corporation Electrical cable assembly having an electrical shield
US9466404B2 (en) * 2013-12-13 2016-10-11 Rohr, Inc. Rigid/pliable sectional resin infused shielded wire harness
BR102015011128A2 (pt) 2014-05-19 2017-11-28 R. Byrne Norman Branched electric system and high seat density area
US10425236B2 (en) 2016-10-05 2019-09-24 Norman R. Byrne Intelligent electrical power distribution system
CA3039134C (en) 2016-10-07 2020-07-07 Norman R. Byrne Rugged weather resistant power distribution
JP6644824B2 (ja) * 2018-04-04 2020-02-12 矢崎総業株式会社 分岐回路体及び電線の分岐方法
JP6691164B2 (ja) * 2018-04-04 2020-04-28 矢崎総業株式会社 分岐回路体及び電線の分岐方法
WO2020061328A1 (en) 2018-09-21 2020-03-26 Saphena Medical, Inc. Surgical insufflation and irrigation conduits and methods for use
CN109786004B (zh) * 2019-01-17 2020-05-15 四川兴川泰线缆有限公司 一种石墨烯预分支电缆包
CA3081864A1 (en) 2019-05-28 2020-11-28 Norman R. Byrne Modular electrical system
CA3082616A1 (en) 2019-06-07 2020-12-07 Norman R. Byrne Electrical power distribution system
US20210125743A1 (en) * 2019-10-29 2021-04-29 Aecom Electrical systems for structures

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US4822956A (en) * 1986-08-11 1989-04-18 American Telephone And Telegraph Company Coaxial cable
EP0396932A2 (de) * 1989-05-06 1990-11-14 DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung Einrichtung zum Schutz elektrischer Anlagen

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US3984622A (en) * 1976-02-20 1976-10-05 Southern Weaving Company Multi-conductor cable harness with woven breakout cover and method of making same
FR2520548A1 (fr) * 1982-01-27 1983-07-29 Fileca Sa Cable electrique blinde souple
US4822956A (en) * 1986-08-11 1989-04-18 American Telephone And Telegraph Company Coaxial cable
EP0396932A2 (de) * 1989-05-06 1990-11-14 DaimlerChrysler Aerospace Airbus Gesellschaft mit beschränkter Haftung Einrichtung zum Schutz elektrischer Anlagen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728114A1 (fr) * 1994-12-13 1996-06-14 Eurocopter France Procede pour la realisation d'une gaine de blindage sur un faisceau de conducteurs electriques et faisceau ainsi obtenu
EP0717420A1 (de) * 1994-12-13 1996-06-19 EUROCOPTER FRANCE, Société Anonyme dite: Herstellungsverfahren einer Abschirmungsmantel auf einem elektrische Leiterbündel, und so erhaltener Bündel
US5718041A (en) * 1994-12-13 1998-02-17 Societe Anonyme Dite: Eurocopter France Process for the production of a shielding sheath on a bundle of electrical conductors
US6066800A (en) * 1994-12-13 2000-05-23 Societe Anonyme Dite: Eurocopter France Process for the production of a shielding sheath on a bundle of electrical conductors

Also Published As

Publication number Publication date
DE69301157D1 (de) 1996-02-15
FR2686728A1 (fr) 1993-07-30
US5414212A (en) 1995-05-09
DE69301157T2 (de) 1996-05-15
FR2686728B1 (fr) 1994-03-18
EP0554159B1 (de) 1996-01-03
ES2082597T3 (es) 1996-03-16

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