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FR3002682A1 - Electrical loom for performing e.g. transmission of electrical signal in aircraft industry, has insulation sheath placed between two composite material layers, and insulation sheath bonded by partial melting of sheath in each material layer - Google Patents

Electrical loom for performing e.g. transmission of electrical signal in aircraft industry, has insulation sheath placed between two composite material layers, and insulation sheath bonded by partial melting of sheath in each material layer Download PDF

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Publication number
FR3002682A1
FR3002682A1 FR1351658A FR1351658A FR3002682A1 FR 3002682 A1 FR3002682 A1 FR 3002682A1 FR 1351658 A FR1351658 A FR 1351658A FR 1351658 A FR1351658 A FR 1351658A FR 3002682 A1 FR3002682 A1 FR 3002682A1
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FR
France
Prior art keywords
sheath
composite material
electrical
fibers
harness according
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
FR1351658A
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French (fr)
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FR3002682B1 (en
Inventor
Benjamin Bourgois
Nicolas Rilat
Frederic Guidez
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PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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Priority to FR1351658A priority Critical patent/FR3002682B1/en
Publication of FR3002682A1 publication Critical patent/FR3002682A1/en
Application granted granted Critical
Publication of FR3002682B1 publication Critical patent/FR3002682B1/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • 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
    • H01B3/44—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 vinyl resins; acrylic resins
    • H01B3/441—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 vinyl resins; acrylic resins from alkenes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024—Woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/026—Knitted fabric
    • 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
    • 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
    • H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
    • H01B3/305—Polyamides or polyesteramides
    • 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
    • H01B3/42—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 polyesters; polyethers; polyacetals
    • H01B3/421—Polyesters
    • 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
    • H01B3/47—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 fibre-reinforced plastics, e.g. glass-reinforced plastics
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/105—Ceramic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/012—Apparatus or processes specially adapted for manufacturing conductors or cables for manufacturing wire harnesses
    • H01B13/01254—Flat-harness manufacturing

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The loom has a series of electric drivers (2) that is placed longitudinally one beside the other in an electric insulation sheath (1). The insulation sheath is placed between two composite material layers (3, 4) that are arranged with a reinforced plastic fiber matrix. The insulation sheath is bonded by partial melting of the sheath in each of the two composite material layers, where the fiber includes basalt, carbon and glass fibers. The composite material layers contain plastic that is miscible in the plastic containing the sheath. An independent claim is also included for a method for manufacturing an electrical loom.

Description

FAISCEAU ELECTRIQUE CONSTITUE PAR AU MOINS UNE SERIE DE CONDUCTEURS ELECTRIQUES LONGITUDINALEMENT LES UNS A COTE DES AUTRES DANS UNE GAINE D'ISOLATION ELECTRIQUE La présente invention concerne un faisceau électrique constitué par au moins une série de conducteurs électriques disposés longitudinalement les uns à côté des autres dans une gaine d'isolation électrique. Les faisceaux électriques de ce type sont utilisés principalement dans les véhicules automobiles et l'industrie aéronautique.The present invention relates to an electrical harness consisting of at least one series of electrical conductors arranged longitudinally next to one another in a series of electrical conductors arranged longitudinally next to one another in an electrical wiring harness consisting of at least one series of electrical conductors arranged longitudinally next to each other. an electrical insulation sheath. Electrical harnesses of this type are used mainly in motor vehicles and the aviation industry.

La gaine qui isole électriquement les conducteurs est fixée à la structure du véhicule au moyen d'agrafes, languettes, etc... Ces faisceaux électriques engendrent les problèmes suivants : - temps importants d'assemblage au montage, - excès de longueur des faisceaux afin de s'adapter à l'environnement, - masse élevée, - isolation électrique défectueuse, - protection insuffisante à l'égard des pièces agressives, - risques d'échauffement en raison de la présence de sources de chaleur. Le but de la présente invention est de remédier à ces inconvénients.The sheath which electrically isolates the conductors is fixed to the vehicle structure by means of staples, tongues, etc ... These electrical bundles cause the following problems: - significant assembly time during assembly, - excess length of the beams in order to to adapt to the environment, - high mass, - defective electrical insulation, - insufficient protection against aggressive parts, - risk of overheating due to the presence of heat sources. The object of the present invention is to overcome these disadvantages.

Ce but est atteint, selon l'invention, grâce à un faisceau électrique constitué par au moins une série de conducteurs électriques disposés longitudinalement les uns à côté des autres dans une gaine d'isolation électrique, caractérisé en ce que cette gaine est disposée entre au moins deux couches en matière composite constituée par une matrice en matière plastique renforcée de fibres, cette gaine étant en matière plastique thermofusible qui est liée par fusion au moins partielle de cette dernière à chacune des deux couches de matière composite. Les deux couches en matière composite, présentes de part et d'autre de la gaine qui renferme les conducteurs, protègent efficacement ces conducteurs contre les risques évoqués plus haut.This object is achieved, according to the invention, by means of an electrical bundle constituted by at least one series of electrical conductors arranged longitudinally next to one another in an electrical insulation sheath, characterized in that this sheath is arranged between at least two layers of composite material constituted by a fiber-reinforced plastic matrix, this sheath being made of hot-melt plastic material which is bonded by at least partial fusion thereof to each of the two layers of composite material. The two layers of composite material, present on both sides of the sheath which encloses the conductors, effectively protect these conductors against the risks mentioned above.

La matrice de la matière composite peut être en matière plastique thermoplastique ou thermodurcissable. Les fibres de renfort de la matière composite peuvent être choisies parmi les fibres de verre, de carbone et de basalte. Ces fibres peuvent se présenter sous l'une des formes suivantes : - nappe, - fibres non tissées, - fibres tissées ou tricotées, - préformes tubulaires, - fibres pré imprégnées de liant, - fibres coupées et projetées. La gaine qui renferme les conducteurs électriques est de préférence en matière thermoplastique. Sous l'effet de la chaleur cette matière thermoplastique fond partiellement ou 10 totalement en se liant aux deux couches de matière composite. La matrice desdites couches en matière composite peut renfermer une matière plastique qui est miscible dans la matière plastique constituant ladite gaine lors de la fusion de cette matière plastique. De préférence, chacune des deux couches en matière composite est 15 composée de plusieurs strates liées les unes aux autres. Dans un mode de réalisation particulièrement avantageux de l'invention, le faisceau électrique incorpore au moins l'une des fonctions suivantes : - décharge électrostatique, - transmission de signal électrique, 20 - protection électromagnétique, - capteur de défaut. Selon un autre aspect, l'invention concerne également un procédé de fabrication du faisceau électrique selon l'invention. Suivant l'invention, ce procédé est caractérisé en ce qu'on place dans un 25 moule, successivement : - une première couche en matière composite constituée par une matrice en matière plastique renforcée de fibres, - la gaine en matière thermofusible renfermant la série de conducteurs électriques, 30 - une seconde couche en matière composite, - on ferme le moule, - on chauffe le moule pour obtenir la fusion au moins partielle de la matière thermofusible constituant ladite gaine, - on laisse refroidir et on démoule le produit obtenu. Lors de la fusion de la matière thermofusible constituant la gaine, cette matière se lie aux couches en matière composite en formant après refroidissement un ensemble d'une seule pièce résistant aux diverses agressions.The matrix of the composite material may be thermoplastic or thermosetting plastic. The reinforcing fibers of the composite material may be selected from glass, carbon and basalt fibers. These fibers can be in one of the following forms: - web, - non-woven fibers, - woven or knitted fibers, - tubular preforms, - pre-impregnated binder fibers, - cut and projected fibers. The sheath which encloses the electrical conductors is preferably made of thermoplastic material. Under the effect of heat this thermoplastic material melts partially or completely by bonding to the two layers of composite material. The matrix of said layers of composite material may contain a plastic material which is miscible in the plastic material constituting said sheath during the melting of this plastic material. Preferably, each of the two composite material layers is composed of several strata bonded to each other. In a particularly advantageous embodiment of the invention, the electrical harness incorporates at least one of the following functions: electrostatic discharge, electrical signal transmission, electromagnetic protection, fault sensor. According to another aspect, the invention also relates to a method of manufacturing the electric harness according to the invention. According to the invention, this method is characterized in that in a mold, successively: a first layer of composite material constituted by a fiber-reinforced plastic matrix, the sheath of hot-melt material containing the series of electrical conductors, - a second layer of composite material, - the mold is closed, - the mold is heated to obtain at least partial melting of the hot melt material constituting said sheath, - is allowed to cool and the product obtained is demolded. When melting the hot-melt material constituting the sheath, this material binds to the layers of composite material forming after cooling a one-piece assembly resistant to various attacks.

De préférence, on ferme le moule au moyen d'un poinçon prenant appui sur ladite seconde couche en matière composite. D'autres particularités et avantages de l'invention apparaîtront encore tout au long de la description ci-après. Aux dessins annexés, donnés à titre d'exemples, non limitatifs : - la figure 1 est une vue en coupe longitudinale d'un assemblage composé de trois strates de matière composite, - la figure 2 est une vue en coupe à échelle agrandie, suivant le plan II-II de la figure 1, - la figure 3 est une vue en perspective d'une gaine renfermant une série de conducteurs électriques, - la figure 4 est une vue en coupe suivant le plan IV-IV de la figure 3, - la figure 5 est une vue en coupe longitudinale d'un moule après introduction dans celui-ci de la première couche de matière composite, - la figure 6 est une vue analogue à la figure 5, après introduction dans le moule de la gaine renfermant les conducteurs, - la figure 7 est une vue en coupe suivant le plan VII-VII de la figure 6, - la figure 8 est une vue analogue à la figure 6, après fermeture du moule au moyen d'un poinçon, - la figure 9 est une vue analogue à la figure 8, après chauffage du moule et fusion de la matière thermofusible, - la figure 10 est une vue en coupe suivant le plan X-X de la figure 9, - la figure 11 est une vue en coupe transversale du produit obtenu après démoulage, - la figure 12 est une vue schématique d'un faisceau électrique selon l'invention, illustrant les diverses fonctions pouvant être incorporées à ce faisceau. Les figures 3 et 4 montrent une gaine 1 renfermant une série de conducteurs 2 constitués par des fils en métal bon conducteur de l'électricité.Preferably, the mold is closed by means of a punch resting on said second layer of composite material. Other features and advantages of the invention will become apparent throughout the description below. In the accompanying drawings, given by way of nonlimiting example: FIG. 1 is a longitudinal sectional view of an assembly composed of three layers of composite material, FIG. 2 is a sectional view on an enlarged scale, following plan II-II of FIG. 1; FIG. 3 is a perspective view of a sheath enclosing a series of electrical conductors; FIG. 4 is a sectional view along the plane IV-IV of FIG. 3; FIG. 5 is a longitudinal sectional view of a mold after introduction into it of the first layer of composite material, FIG. 6 is a view similar to FIG. 5, after introduction into the mold of the sheath containing the conductors, - Figure 7 is a sectional view along the plane VII-VII of Figure 6, - Figure 8 is a view similar to Figure 6, after closing the mold by means of a punch, - the figure 9 is a view similar to FIG. 8, after heating the mold and melting the material FIG. 10 is a sectional view along the plane XX of FIG. 9; FIG. 11 is a cross-sectional view of the product obtained after unmolding; FIG. 12 is a diagrammatic view of an electric harness according to FIG. the invention, illustrating the various functions that can be incorporated in this beam. Figures 3 and 4 show a sheath 1 enclosing a series of conductors 2 consisting of metal son good conductor of electricity.

Ces conducteurs 2 sont noyés dans une matière plastique qui isole électriquement ces conducteurs 2 les uns par rapport aux autres. Conformément à l'invention, la gaine 1 est disposée (voir figure 7) entre au moins deux couches 3, 4 en matière composite constituée par une matrice en matière plastique renforcée de fibres. Cette gaine 1 est de préférence plate. De plus, la gaine 1 est en matière plastique thermofusible qui est liée par fusion au moins partielle à chacune des deux couches de matière composite 3, 4, comme on l'expliquera plus en détail plus loin.These conductors 2 are embedded in a plastic material that electrically isolates these conductors 2 from each other. According to the invention, the sheath 1 is disposed (see FIG. 7) between at least two layers 3, 4 made of composite material constituted by a fiber-reinforced plastic matrix. This sheath 1 is preferably flat. In addition, the sheath 1 is made of hot melt plastic material which is at least partially fused to each of the two layers of composite material 3, 4, as will be explained in more detail below.

La matrice de la matière composite est en matière plastique thermoplastique, telle que le polypropylène ou un polyamide, ou en matière plastique thermodurcissable, telle que polyester ou polyuréthane. Les fibres de la matière composite peuvent être choisies parmi les fibres de verre, de carbone et de basalte.The matrix of the composite material is thermoplastic plastic material, such as polypropylene or a polyamide, or thermosetting plastic material, such as polyester or polyurethane. The fibers of the composite material may be selected from glass, carbon and basalt fibers.

De plus, ces fibres peuvent se présenter sous l'une des formes suivantes : - nappe, - fibres non tissées, - fibres tissées ou tricotées, - préformes tubulaires, - fibres pré imprégnées de liant, - fibres coupées et projetées. La matrice des couches 3, 4 en matière composite renferme une matière plastique qui est miscible dans la matière plastique constituant la gaine 1 lors de la fusion de cette matière plastique.In addition, these fibers can be in one of the following forms: - web, - non-woven fibers, - woven or knitted fibers, - tubular preforms, - pre-impregnated binder fibers, - cut and projected fibers. The matrix of the layers 3, 4 of composite material contains a plastic material which is miscible in the plastic material constituting the sheath 1 during the melting of this plastic material.

Ceci est le cas lorsque la gaine 1 et la matrice des couches 3, 4 sont en matière thermoplastique. Par ailleurs, chacune des deux couches 3, 4 en matière composite peut être composée de plusieurs strates liées les unes aux autres, comme montré sur les figures 1 et 2.This is the case when the sheath 1 and the matrix of the layers 3, 4 are of thermoplastic material. Furthermore, each of the two layers 3, 4 of composite material may be composed of several strata bonded to each other, as shown in Figures 1 and 2.

Le faisceau électrique selon l'invention présente l'avantage de pouvoir incorporer une ou plusieurs des fonctions suivantes : - décharge électrostatique, - transmission de signal électrique, - protection électromagnétique, - capteur de défaut. Un tel faisceau est représenté sur la figure 12. Sur cette figure 12, les références 5, 6, 7 représentent des connecteurs, la référence 8 un capteur intégré au faisceau, la référence 9 un dispositif de protection électromagnétique et 10 une liaison reliée à la masse. On va maintenant décrire, en référence aux figures 5 à 11, un procédé permettant d'obtenir le faisceau électrique selon l'invention. Selon ce procédé, on place dans un moule 11, successivement : - une première couche 3 (voir figure 5) en matière composite constituée par une matrice en matière plastique renforcée de fibres, - la gaine 1 (voir figure 6) en matière thermofusible renfermant la série de conducteurs électriques et, - une seconde couche 4 en matière composite (voir également la figure 6 ainsi que la figure 7). Dans une étape suivante (voir figure 8), on ferme le moule 11 au moyen d'un poinçon 12 prenant appui sur la seconde couche 4 en matière composite, de façon à appliquer une pression sur l'ensemble formé par la couche 4, la gaine 1 et la couche 3.The electrical harness according to the invention has the advantage of being able to incorporate one or more of the following functions: - electrostatic discharge, - electrical signal transmission, - electromagnetic protection, - defect sensor. Such a bundle is shown in FIG. 12. In this FIG. 12, the references 5, 6, 7 represent connectors, the reference 8 a sensor integrated in the bundle, the reference 9 an electromagnetic protection device and a link connected to the mass. A method for obtaining the electric harness according to the invention will now be described with reference to FIGS. 5 to 11. According to this method, a first layer 3 (see FIG. 5) of composite material consisting of a matrix of fiber-reinforced plastics material is placed successively in a mold 11, the sheath 1 (see FIG. 6) of hot-melt material containing the series of electrical conductors and, - a second layer 4 of composite material (see also Figure 6 and Figure 7). In a next step (see FIG. 8), the mold 11 is closed by means of a punch 12 bearing on the second layer 4 of composite material, so as to apply pressure on the assembly formed by the layer 4, the sheath 1 and layer 3.

Dans l'étape suivante (voir figure 9), on chauffe le moule 11 pour obtenir la fusion au moins partielle de la matière thermofusible constituant la gaine 1 puis on laisse refroidir le moule et on démoule le produit obtenu. Ce produit est montré sur les figures 10 et 11. Dans cet exemple, la matrice des couches 3 et 4 en matière composite est en matière thermoplastique identique à celle constituant la gaine 1. Pour cette raison, la matrice des couches 3 et 4 fond totalement tout comme celle de la gaine 1. Ainsi le produit obtenu, tel que représenté sur la figure 11, est une pièce monolithique dans laquelle sont noyés les fils conducteurs 2 ainsi que les fibres de renfort qui ne sont pas visibles sur la figure 11. Ce produit présente les principaux avantages suivants : - gain de temps au montage, - facilité de manipulation du produit favorable à la répétabilité, - réduction de masse et de coût par élimination des surlongueurs, - possibilité d'intégrer plusieurs fonctions dont une protection électromagnétique, - protection contre les diverses agressions.In the next step (see FIG. 9), the mold 11 is heated to obtain at least partial melting of the hot-melt material constituting the sheath 1, then the mold is allowed to cool and the product obtained is demolded. This product is shown in FIGS. 10 and 11. In this example, the matrix of layers 3 and 4 made of composite material is made of identical thermoplastic material to that constituting sheath 1. For this reason, the matrix of layers 3 and 4 completely melts. as well as that of the sheath 1. Thus the product obtained, as shown in FIG. 11, is a monolithic piece in which are embedded the conductive wires 2 and the reinforcing fibers that are not visible in FIG. product has the following main advantages: - time saving in assembly, - ease of handling of the product favorable to repeatability, - reduction of weight and cost by eliminating excess lengths, - possibility of integrating several functions including electromagnetic protection, - protection against various aggressions.

Claims (10)

REVENDICATIONS1. Faisceau électrique constitué par au moins une série de conducteurs électriques (2) disposés longitudinalement les uns à côté des autres dans une gaine d'isolation électrique (1), caractérisé en ce que cette gaine (1) est disposée entre au moins deux couches (3, 4) en matière composite constituée par une matrice en matière plastique renforcée de fibres, cette gaine (1) étant en matière plastique thermofusible qui est liée par fusion au moins partielle de cette dernière à chacune des deux couches (3, 4) de matière composite.REVENDICATIONS1. Electrical bundle consisting of at least one series of electrical conductors (2) arranged longitudinally next to one another in an electrical insulation sheath (1), characterized in that this sheath (1) is arranged between at least two layers ( 3, 4) made of composite material constituted by a fiber-reinforced plastic matrix, this sheath (1) being made of hot-melt plastic material which is at least partially fused with the latter to each of the two layers (3, 4) of composite material. 2. Faisceau électrique selon la revendication 1, caractérisé en ce que la matrice de la matière composite est en matière plastique thermoplastique ou en matière plastique thermodurcissable.2. Electrical harness according to claim 1, characterized in that the matrix of the composite material is thermoplastic plastic material or thermosetting plastic material. 3. Faisceau électrique selon l'une des revendications 1 ou 2, caractérisé en ce que lesdites fibres sont choisies parmi les fibres de verre, de carbone et de basalte.3. electrical harness according to one of claims 1 or 2, characterized in that said fibers are selected from glass fibers, carbon and basalt. 4. Faisceau électrique selon l'une des revendications 1 à 3, caractérisé en ce que lesdites fibres se présentent sous l'une des formes suivantes : - nappe, - fibres non tissées, - fibres tissées ou tricotées, - préformes tubulaires, - fibres pré imprégnées de liant, - fibres coupées et projetées.4. Electrical harness according to one of claims 1 to 3, characterized in that said fibers are in one of the following forms: - web, - non-woven fibers, - woven or knitted fibers, - tubular preforms, - fibers pre-impregnated with binder, - cut and projected fibers. 5. Faisceau électrique selon l'une des revendications 1 à 4, caractérisé en ce que la gaine (1) est en matière thermoplastique.5. Electrical harness according to one of claims 1 to 4, characterized in that the sheath (1) is made of thermoplastic material. 6. Faisceau électrique selon l'une des revendications 1 à 5, caractérisé en ce que la matrice desdites couches (3, 4) en matière composite renferme une matière plastique qui est miscible dans la matière plastique constituant ladite gaine lors de la fusion de cette matière plastique.6. electrical harness according to one of claims 1 to 5, characterized in that the matrix of said layers (3, 4) of composite material contains a plastic material which is miscible in the plastic material constituting said sheath during the melting of this plastic material. 7. Faisceau électrique selon l'une des revendications 1 à 6, caractérisé en ce que chacune des deux couches (3, 4) en matière composite est composée de plusieurs strates liées les unes aux autres.7. Electrical harness according to one of claims 1 to 6, characterized in that each of the two layers (3, 4) of composite material is composed of several strata bonded to each other. 8. Faisceau électrique selon l'une des revendications 1 à 7, caractérisé en ce qu'il incorpore au moins l'une des fonctions suivantes : - décharge électrostatique, - transmission de signal électrique, - protection électromagnétique, - capteur de défaut.8. Electrical harness according to one of claims 1 to 7, characterized in that it incorporates at least one of the following functions: - electrostatic discharge, - electrical signal transmission, - electromagnetic protection, - fault sensor. 9. Procédé de fabrication d'un faisceau électrique selon l'une des revendications 1 à 8, caractérisé en ce que l'on place dans un moule (11), successivement : - une première couche (3) en matière composite constituée par une matrice en matière plastique renforcée de fibres, - la gaine (1) en matière thermofusible renfermant la série de conducteurs électriques (2), - une seconde couche (4) en matière composite, - on ferme le moule (11), - on chauffe le moule pour obtenir la fusion au moins partielle de la matière thermofusible constituant ladite gaine (1), - on laisse refroidir et on démoule le produit obtenu.9. A method of manufacturing an electric harness according to one of claims 1 to 8, characterized in that is placed in a mold (11), successively: - a first layer (3) of composite material consisting of a fiber-reinforced plastics matrix, - the sheath (1) of hot-melt material containing the series of electrical conductors (2), - a second layer (4) of composite material, - the mold is closed (11), - it heats the mold to obtain at least partial melting of the hot melt material constituting said sheath (1), it is allowed to cool and the product obtained is demolded. 10. Procédé de fabrication selon la revendication 9, caractérisé en ce qu'on ferme le moule (11) au moyen d'un poinçon (12) prenant appui sur ladite seconde couche (4) en matière composite.10. The manufacturing method according to claim 9, characterized in that closes the mold (11) by means of a punch (12) bearing on said second layer (4) of composite material.
FR1351658A 2013-02-26 2013-02-26 ELECTRICAL BEAM CONSISTING OF AT LEAST ONE SERIES OF ELECTRICAL CONDUCTORS LONGITUDINALLY THROUGHOUT THE OTHER IN AN ELECTRICAL INSULATION SLEEVE Expired - Fee Related FR3002682B1 (en)

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FR1351658A FR3002682B1 (en) 2013-02-26 2013-02-26 ELECTRICAL BEAM CONSISTING OF AT LEAST ONE SERIES OF ELECTRICAL CONDUCTORS LONGITUDINALLY THROUGHOUT THE OTHER IN AN ELECTRICAL INSULATION SLEEVE

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FR1351658A FR3002682B1 (en) 2013-02-26 2013-02-26 ELECTRICAL BEAM CONSISTING OF AT LEAST ONE SERIES OF ELECTRICAL CONDUCTORS LONGITUDINALLY THROUGHOUT THE OTHER IN AN ELECTRICAL INSULATION SLEEVE

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030062190A1 (en) * 2001-04-17 2003-04-03 Kim Young Joon Multi-layer insulation system for electrical conductors
US20050252679A1 (en) * 2004-05-13 2005-11-17 Hsing-Hua Chang Multi-layer insulated wire, processes for preparing the same, and its applications
EP1950769A1 (en) * 2005-09-30 2008-07-30 The Furukawa Electric Co., Ltd. Multilayered electric insulated wire and transformer using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030062190A1 (en) * 2001-04-17 2003-04-03 Kim Young Joon Multi-layer insulation system for electrical conductors
US20050252679A1 (en) * 2004-05-13 2005-11-17 Hsing-Hua Chang Multi-layer insulated wire, processes for preparing the same, and its applications
EP1950769A1 (en) * 2005-09-30 2008-07-30 The Furukawa Electric Co., Ltd. Multilayered electric insulated wire and transformer using the same

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