EP3024092A1 - Assembly of an electrical connection unit - Google Patents

Assembly of an electrical connection unit Download PDF

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Publication number
EP3024092A1
EP3024092A1 EP15194894.0A EP15194894A EP3024092A1 EP 3024092 A1 EP3024092 A1 EP 3024092A1 EP 15194894 A EP15194894 A EP 15194894A EP 3024092 A1 EP3024092 A1 EP 3024092A1
Authority
EP
European Patent Office
Prior art keywords
electrical connection
core
protective sleeve
connection assembly
cable
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.)
Withdrawn
Application number
EP15194894.0A
Other languages
German (de)
French (fr)
Inventor
Jean-François Maziere
Laurent Ferrieres
Adrien LAURINO
Louis Chretien
Bastien Baudel
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.)
Leoni Wiring Systems France SAS
Original Assignee
Leoni Wiring Systems France SAS
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 Leoni Wiring Systems France SAS filed Critical Leoni Wiring Systems France SAS
Publication of EP3024092A1 publication Critical patent/EP3024092A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/20—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping using a crimping sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

Definitions

  • the present invention relates to a method of assembling an electrical connection assembly, in particular an electrical connection assembly used in a motor vehicle electrical circuit.
  • a motor vehicle electrical circuit generally comprises electrical cables connected to electrically conductive lugs.
  • These electric cables most often comprise multi-core cores formed by a bundle of elementary conductor wires, for example twisted wires, which are covered with insulating sheaths.
  • a lug usually includes a first attachment end on a generally ring-shaped electrical connection terminal member, and a second deformable end for crimping on the end of an electrical cable.
  • the pod may be intended to conduct currents of intensities and tensions very varied.
  • one or more electrical cables are connected to the same lug, made of an alloy comprising mainly copper, by crimping the lug on the core of the cable or cables.
  • a step of cutting the sheath covering the core of the cable at one end of the cable to strip the core is usually performed at a first station of an assembly line.
  • the step of connecting the cable to the lug usually occurs at another station than the cutting station.
  • the stripped end of the core is subjected to external aggression, which entails a risk of fraying the wires.
  • This solution has the disadvantage of presenting a risk of damaging the sheath, which can burn on contact with the molten solder. It is therefore necessary to master the tinning step, and in particular the length of the bare core portion on which the solder is made.
  • Another solution is to leave in place the portion of the insulating sheath that has been cut during the cable conveying to the second station.
  • a third solution is finally to remove the piece of insulating sheath that was cut at the first station, to wrap the soul tape, and to convey the protected cable to the second station.
  • the aim of the invention is to ensure, between the cutting step of the sheath which covers the core of the multi-wire cable and the step of assembling this core to the lug, an effective protection of the stripped end of the core of the cable against the fraying of the son, and which does not have the disadvantages of the prior art.
  • Magnetic Pulse Crimping in English terminology
  • magneto-crimping consists in compressing this piece against another by application of a very high intensity magnetic field, or magnetic pulse.
  • the protective sleeve provides effective protection against fraying of the son, because the fact that it is crimped magnetic pulse to secure it firmly to the soul by compressing the son, which prevents fraying. This fixing can also be done without damage to the sheath, which, being non-conductive, is not affected by the magnetic field.
  • magnetic pulse crimping provides better quality protection than by crimping by punching. Indeed, it is uniform on the circumference of the core and thus limits the spaces that can form between the core and the sleeve during crimping, which is not the case of crimping by punching that does not allow obtain a circumferentially continuous crimp.
  • the protective sleeve being made of conductive material, it is not necessary to remove it before assembly of the terminal: on the contrary, it can serve as a support for an assembly of the terminal.
  • the assembly method further comprises a step of assembling an electrically conductive lug on the protective sleeve after the magnetic pulse crimping step of the protective sleeve on the stripped end of the core. cable.
  • the assembly of the lug on the sleeve can be done after transporting the cable to another assembly station that the assembly station of the protective sleeve on the core of the cable, because the core of the cable is during this transport, effectively protected by the protective sleeve against external aggressions such as moisture.
  • the assembly step is performed by folding crimping wings carried by the lug around the protective sleeve.
  • the method further comprises a step of assembling a sealing sleeve covering the junction between the sheath and the protective sleeve.
  • the protective sleeve partially covers the sheath.
  • connection assembly has intrinsic characteristics that make it possible to differentiate it from a connection assembly of the prior art, in particular by observation under an optical microscope or electronic scanning of the connection between the sleeve and the core of the cable. .
  • connection assembly claimed is of better quality than a connection assembly of the prior art in particular because the seal between the sleeve and the core is improved.
  • the protective sleeve has a form of revolution without interruption of material on its circumference.
  • the protective sleeve is closed at a first end remote from the sheath so as to form a protective cap.
  • the protective cap has a convergent shape of revolution towards the first end.
  • the convergent shape of revolution makes it possible to reduce the possible space that can form between the cap and the stripped end of the core during magnetic pulse crimping.
  • the first end of the protective cap is extended by a connecting finger on which an element is intended to be connected.
  • the connecting finger thus serves as a support for assembling a pod that can be standard or commercially available.
  • the connecting finger has a form of full revolution.
  • the wires of the core of the electric cable are made of material essentially comprising aluminum.
  • the protective sleeve is made of material essentially comprising copper.
  • connection assembly 1 comprises an electric cable 2, a protective cap 4 mounted on the electric cable 2 and a conductive lug 5 electrically connected to the protective cap 4.
  • the electric cable 2 comprises a conductive core 8 formed by a bundle of elementary conductor wires, for example twisted metal wires (not shown), which is covered by an insulating sheath 10.
  • the wires of the conductive core 8 are preferably made material comprising essentially aluminum, that is to say more than 50 mol% of aluminum.
  • the electrically conductive lug 5 is here a standard lug, conventionally comprising a fixing end 6, in the general shape of a ring, and a deformable end 7 intended to be electrically connected to the electric cable 2, in this case by the intermediate protective cap 4 as will be seen later.
  • the electrical connection assembly 1 shown in the figure 1 also comprises a sealing sleeve 12 covering the junction between the insulating sheath 6 and the protective cap 4.
  • the protective cap 4 alone. It comprises a tubular portion 14 of circular section, forming a sleeve, or any other form of revolution without interruption of material on its circumference.
  • the tubular portion 14 is therefore advantageously made by stamping or machining to guarantee this absence of material interruption.
  • the tubular portion 14 is formed of a wound metal sheet, a supply of material clogging all the gap between the contiguous edges of the sheet will be provided to ensure continuity of material.
  • the tubular portion 14 is closed at a first end 16 which is, as can be seen on the figure 4 in particular, the end farthest from the insulating sheath 10 once the protective cap 4 is crimped on the conductive core 8 of the electric cable 2.
  • the first end 16 is extended by a connecting finger 18 on which the electrically conductive lug 5 is intended to be connected.
  • the connecting finger 18 has, just like the tubular portion 14, a form of revolution of circular section, but of external diameter less than that of the tubular portion 14.
  • the connecting finger 18 is solid so as to constitute a resistant assembly support for the electrically conductive lug 5.
  • the protective cap 4 is integrally made of a material comprising essentially copper, that is to say more than 50 mol% of copper.
  • a portion of the insulating sheath 10 covering the conductive core 8 of the electric cable 2 is cut to expose an end 20 of this core.
  • the portion thus cut off is then removed from the insulating sheath 10 to obtain the electric cable 2 comprising a stripped end 20 shown in FIG. figure 3 .
  • the protective cap 4 is crimped onto the conductive core 8 so as to compress the wires. and protect them from fraying.
  • This crimping is carried out by magnetic pulse, which makes it possible to obtain a uniform set on the circumference of the conductive core 8 and thus limits the spaces that can form between the conductive core 8 and the protective cap 4, as can be see him on the figure 4 .
  • the electric cable 2 is conveyed or conveyed, the stripped end 20 is thus protected by the protective cap 4 to a second assembly station.
  • the electrically conductive lug 6 is crimped directly onto the protective cap 4.
  • the electrically conductive lug is crimped by folding crimping flanges 22 carried by the electrically conductive lug around the connecting finger 18 to obtain the assembly of the lug. figure 5 .
  • the electrically conductive lug 5 can be crimped on the connecting finger 18 by magnetic pulse.
  • the sealing sleeve 12 covering the junction 24 between the insulating sheath 10 and the protective cap 4.
  • the sealing sleeve 12 thus extends partly on the insulating sheath 10 and partly on the tubular portion 14.
  • the sealing sleeve 12 is for example placed around the junction 24 and is fixed around this junction by retraction by heating.
  • the end of the protective cap 4 closest to the insulating sheath 10 is connected to a sealing collar 26 via a shoulder 27 of the protective cap 4.
  • This collar 26 compresses the sheath after assembly by magnetic crimping.
  • the electrically conductive lug 5 is crimped directly onto the tubular portion 14 of the protective cap 4.
  • the first closed end 16 is not extended by a connecting finger 18, as is can see it at Figures 8 to 10 .
  • the protective cap 4 is threaded onto the conductive core 8 of the electric cable 2 as can be seen in FIG. figure 8 .
  • the electrically conductive lug 5 can be crimped on the tubular portion 14 by magnetic pulse.
  • FIG 11 an electrical connection assembly 1 according to a fourth embodiment of the invention.
  • the protective cap 4 is assembled by magnetic pulse crimping around the conductive core 8 of the electric cable 2.
  • the protective cap 4 has a portion 28 having a convergent shape of revolution towards the first end 16 of the protective cap 4.
  • the shape of the convergent portion 28 makes it possible to reduce the possible space that may form between the protective cap 4 and the stripped end 20 of the conductive core 8 during magnetic pulse crimping.
  • the convergent portion 28 Before this magnetic pulse crimping, the convergent portion 28 has a substantially frustoconical shape as illustrated in FIG. figure 12 .
  • the convergent portion 28 is advantageously extended, at its first end 16, by a connecting finger 18 similar to that of the first and second embodiments.
  • the protective cap 4 comprises a convergent portion 28 similar to that of the fourth embodiment, without being provided with a connecting finger.
  • the sealing cap may, if it has no end closed at its end, constitute a sealing sleeve.

Abstract

Ce procédé d'assemblage d'un ensemble de raccordement électrique (1) comprend une cosse conductrice électriquement (5) et un câble électrique (2). Le câble électrique (2) comporte une âme (8) métallique conductrice formée par un faisceau de fils conducteurs élémentaires recouverte par une gaine isolante (10). Le procédé comprend les étapes suivantes : - une étape de découpage de la gaine (10) pour dénuder une extrémité de l'âme (4) du câble (2), - une étape de sertissage par impulsion magnétique d'un manchon de protection (4) en matériau conducteur sur l'extrémité dénudée de l'âme (8) du câble (2), et - une étape d'assemblage d'une cosse conductrice électriquement (5) sur le manchon de protection (4).This method of assembling an electrical connection assembly (1) comprises an electrically conductive lug (5) and an electric cable (2). The electric cable (2) comprises a conductive metal core (8) formed by a bundle of elementary conductor wires covered by an insulating sheath (10). The method comprises the following steps: a step of cutting the sheath (10) to expose one end of the core (4) of the cable (2), a magnetic pulse crimping step of a protective sleeve (4) made of conductive material on the stripped end of the core (8) of the cable (2), and - A step of assembling an electrically conductive lug (5) on the protective sleeve (4).

Description

La présente invention concerne un procédé d'assemblage d'un ensemble de raccordement électrique, en particulier un ensemble de raccordement électrique utilisé dans un circuit électrique de véhicule automobile.The present invention relates to a method of assembling an electrical connection assembly, in particular an electrical connection assembly used in a motor vehicle electrical circuit.

Un circuit électrique de véhicule automobile comprend, de façon générale, des câbles électriques raccordés à des cosses conductrices électriquement.A motor vehicle electrical circuit generally comprises electrical cables connected to electrically conductive lugs.

Ces câbles électriques comprennent le plus souvent des âmes multifilaires formées par un faisceau de fils conducteurs élémentaires, par exemple des fils métalliques torsadés, qui sont recouvertes de gaines isolantes.These electric cables most often comprise multi-core cores formed by a bundle of elementary conductor wires, for example twisted wires, which are covered with insulating sheaths.

Une cosse comprend habituellement une première extrémité de fixation sur un élément formant borne de connexion électrique, en forme générale d'anneau, et une seconde extrémité déformable destinée à être sertie sur l'extrémité d'un câble électrique.A lug usually includes a first attachment end on a generally ring-shaped electrical connection terminal member, and a second deformable end for crimping on the end of an electrical cable.

La cosse peut être destinée à conduire des courants d'intensités et de tensions très variées.The pod may be intended to conduct currents of intensities and tensions very varied.

Dans la plupart cas, un ou plusieurs câbles électriques sont raccordés à une même cosse, réalisée dans un alliage comprenant majoritairement du cuivre, par sertissage de la cosse sur l'âme du ou des câbles.In most cases, one or more electrical cables are connected to the same lug, made of an alloy comprising mainly copper, by crimping the lug on the core of the cable or cables.

A cet effet, on procède au préalable à une étape de découpe de la gaine recouvrant l'âme du câble au niveau d'une extrémité du câble pour dénuder cette âme. Cette étape est réalisée en général à un premier poste d'une chaîne d'assemblage.For this purpose, it is preceded by a step of cutting the sheath covering the core of the cable at one end of the cable to strip the core. This step is usually performed at a first station of an assembly line.

L'étape de raccordement du câble à la cosse se produit en général à un autre poste que le poste de découpe. Ainsi, lors de l'étape de convoyage (ou de transport) entre ces deux postes, l'extrémité dénudée de l'âme est soumise aux agressions extérieures, ce qui entraîne un risque d'effilochage des fils.The step of connecting the cable to the lug usually occurs at another station than the cutting station. Thus, during the conveying (or transport) stage between these two stations, the stripped end of the core is subjected to external aggression, which entails a risk of fraying the wires.

Pour éviter le risque d'effilochage, il est connu de procéder à une étape d'étamage de l'extrémité dénudée de l'âme, qui consiste à recouvrir l'extrémité dénudée de l'âme d'une couche de brasure.To avoid the risk of fraying, it is known to proceed to a tinning step of the stripped end of the core, which consists of covering the stripped end of the core with a solder layer.

Cette solution a pour inconvénient de présenter un risque d'endommagement de la gaine, qui peut brûler au contact de la brasure en fusion. Il est donc nécessaire de bien maîtriser l'étape d'étamage, et en particulier la longueur de la partie de l'âme dénudée sur laquelle l'apport de brasure est réalisé.This solution has the disadvantage of presenting a risk of damaging the sheath, which can burn on contact with the molten solder. It is therefore necessary to master the tinning step, and in particular the length of the bare core portion on which the solder is made.

Une autre solution consiste à laisser en place la partie de la gaine isolante qui a été découpée durant le convoyage du câble jusqu'au deuxième poste.Another solution is to leave in place the portion of the insulating sheath that has been cut during the cable conveying to the second station.

Une troisième solution consiste enfin à enlever le morceau de la gaine isolante qui a été découpée au premier poste, d'envelopper l'âme de ruban adhésif, et de convoyer le câble ainsi protégé jusqu'au deuxième poste.A third solution is finally to remove the piece of insulating sheath that was cut at the first station, to wrap the soul tape, and to convey the protected cable to the second station.

Dans ces deux dernières solutions, le morceau de gaine ou le ruban adhésif doivent être retirés avant l'assemblage de cette partie à la cosse. Ainsi, ces éléments deviennent rapidement des déchets dont il faut gérer le retrait et l'évacuation.In these last two solutions, the piece of sheath or the adhesive tape must be removed before assembling this part to the lug. Thus, these elements quickly become waste which must be managed the withdrawal and evacuation.

L'invention a pour but d'assurer, entre l'étape de découpage de la gaine qui recouvre l'âme du câble multifilaire et l'étape d'assemblage de cette âme à la cosse, une protection efficace de l'extrémité dénudée de l'âme du câble contre l'effilochage des fils, et qui ne présente pas les inconvénients de l'art antérieur.The aim of the invention is to ensure, between the cutting step of the sheath which covers the core of the multi-wire cable and the step of assembling this core to the lug, an effective protection of the stripped end of the core of the cable against the fraying of the son, and which does not have the disadvantages of the prior art.

A cet effet, l'invention a pour objet un procédé d'assemblage d'un ensemble de raccordement électrique comprenant une cosse conductrice électriquement et un câble électrique, le câble électrique comportant une âme métallique conductrice formée par un faisceau de fils conducteurs élémentaires recouvert par une gaine isolante, comprenant :

  • une étape de découpage de la gaine pour dénuder une extrémité de l'âme du câble,
    caractérisé en ce que il comprend en outre :
  • une étape de sertissage par impulsion magnétique d'un manchon de protection en matériau conducteur sur l'extrémité dénudée de l'âme du câble, et
  • une étape d'assemblage d'une cosse conductrice électriquement sur le manchon de protection.
For this purpose, the subject of the invention is a method of assembling an electrical connection assembly comprising an electrically conductive terminal and an electrical cable, the electrical cable comprising a conductive metal core formed by a bundle of elementary conductor wires covered by an insulating sheath, comprising:
  • a cutting step of the sheath for stripping an end of the core of the cable,
    characterized in that it further comprises:
  • a magnetic pulse crimping step of a protective sleeve of conductive material on the stripped end of the core of the cable, and
  • a step of assembling a conductive lug electrically on the protective sleeve.

Le sertissage par impulsion magnétique d'une pièce (« Magnetic Pulse Crimping » en terminologie anglo-saxonne) ou magnéto-sertissage, consiste à compresser cette pièce contre une autre par application d'un champ magnétique à très forte intensité, ou impulsion magnétique.The magnetic pulse crimping of a piece ("Magnetic Pulse Crimping" in English terminology) or magneto-crimping, consists in compressing this piece against another by application of a very high intensity magnetic field, or magnetic pulse.

Le manchon de protection assure une protection efficace contre l'effilochage des fils, car le fait qu'il soit serti par impulsion magnétique permet de le fixer solidement à l'âme en compressant les fils, ce qui empêche tout effilochage. Cette fixation peut en outre se faire sans dommage pour la gaine, qui, étant non conductrice, n'est pas affectée par le champ magnétique.The protective sleeve provides effective protection against fraying of the son, because the fact that it is crimped magnetic pulse to secure it firmly to the soul by compressing the son, which prevents fraying. This fixing can also be done without damage to the sheath, which, being non-conductive, is not affected by the magnetic field.

En outre, le sertissage par impulsion magnétique permet d'obtenir une protection de meilleure qualité que par sertissage par poinçonnage. En effet, il est uniforme sur la circonférence de l'âme et limite ainsi les espaces pouvant se former entre l'âme et le manchon lors du sertissage, ce qui n'est pas le cas du sertissage par poinçonnage qui ne permet pas d'obtenir un serti circonférentiellement continu.In addition, magnetic pulse crimping provides better quality protection than by crimping by punching. Indeed, it is uniform on the circumference of the core and thus limits the spaces that can form between the core and the sleeve during crimping, which is not the case of crimping by punching that does not allow obtain a circumferentially continuous crimp.

Enfin, le manchon de protection étant réalisé en matériau conducteur, il n'est pas nécessaire de l'enlever avant assemblage de la cosse : au contraire, il peut servir de support pour un assemblage de la cosse.Finally, the protective sleeve being made of conductive material, it is not necessary to remove it before assembly of the terminal: on the contrary, it can serve as a support for an assembly of the terminal.

Ainsi, avantageusement, le procédé d'assemblage comprend en outre une étape d'assemblage d'une cosse conductrice électriquement sur le manchon de protection après l'étape de sertissage par impulsion magnétique du manchon de protection sur l'extrémité dénudée de l'âme du câble.Thus, advantageously, the assembly method further comprises a step of assembling an electrically conductive lug on the protective sleeve after the magnetic pulse crimping step of the protective sleeve on the stripped end of the core. cable.

Ceci présente l'avantage de pouvoir assembler n'importe quelle cosse standard ou habituellement disponible dans le commerce directement sur la cosse conductrice électriquement.This has the advantage of being able to assemble any standard or commercially available lug directly on the electrically conductive lug.

De plus, l'assemblage de la cosse sur le manchon peut se faire après transport du câble vers un autre poste d'assemblage que le poste d'assemblage du manchon de protection sur l'âme du câble, car l'âme du câble est, durant ce transport, efficacement protégée par le manchon de protection des agressions extérieures comme l'humidité.In addition, the assembly of the lug on the sleeve can be done after transporting the cable to another assembly station that the assembly station of the protective sleeve on the core of the cable, because the core of the cable is during this transport, effectively protected by the protective sleeve against external aggressions such as moisture.

De préférence, l'étape d'assemblage est réalisée par repliage d'ailes de sertissage portées par la cosse autour du manchon de protection.Preferably, the assembly step is performed by folding crimping wings carried by the lug around the protective sleeve.

Il s'agit là d'un procédé d'assemblage simple et peu coûteux, pouvant être utilisé avec la plupart des cosses du commerce.This is a simple and inexpensive joining process that can be used with most commercial pods.

Pour éviter l'introduction d'humidité à la jonction entre cette âme et ce manchon, le procédé comprend en outre une étape d'assemblage d'un manchon d'étanchéité recouvrant la jonction entre la gaine et le manchon de protection.To prevent the introduction of moisture at the junction between this core and this sleeve, the method further comprises a step of assembling a sealing sleeve covering the junction between the sheath and the protective sleeve.

Autrement, il peut être prévu que le manchon de protection recouvre en partie la gaine.Otherwise, it may be provided that the protective sleeve partially covers the sheath.

L'invention concerne également un ensemble de raccordement électrique comprenant une cosse conductrice électriquement et un câble électrique, le câble électrique comportant une âme métallique conductrice formée par un faisceau de fils conducteurs élémentaires recouvert par une gaine isolante,
caractérisé en ce que l'ensemble comprend en outre :

  • un manchon de protection réalisé en matériau conducteur serti par impulsion magnétique sur une extrémité dénudée de l'âme, et
  • une cosse conductrice électriquement sertie sur le manchon de protection.
The invention also relates to an electrical connection assembly comprising an electrically conductive lug and an electric cable, the electric cable comprising a conductive metal core formed by a bundle of elementary conductor wires covered by an insulating sheath,
characterized in that the assembly further comprises:
  • a protective sleeve made of conductive material set by magnetic pulse on a stripped end of the core, and
  • a conductive lug electrically crimped onto the protective sleeve.

Un tel ensemble de raccordement présente des caractéristiques intrinsèques qui permettent de le différencier d'un ensemble de raccordement de l'art antérieur, notamment par l'observation au microscope optique ou à balayage électronique de la liaison entre le manchon et l'âme du câble.Such a connection assembly has intrinsic characteristics that make it possible to differentiate it from a connection assembly of the prior art, in particular by observation under an optical microscope or electronic scanning of the connection between the sleeve and the core of the cable. .

En particulier, l'observation d'une coupe micrographique de la liaison entre un manchon en cuivre serti par impulsion magnétique sur l'âme d'un câble en fils d'aluminium torsadés montre une déformation homogène des deux matériaux, et non, comme dans l'art antérieur, une déformation laissant subsister par endroits des interstices entre le manchon et les fils. Par ailleurs, contrairement à ce qui se produit avec un sertissage à ultrasons ou mécanique, on ne peut observer aucune porosité entre les brins du câble. Enfin, on observe un échange de matière entre le cuivre et l'aluminium.In particular, the observation of a micrographic section of the connection between a copper sleeve set by magnetic pulse on the core of a twisted aluminum wire cable shows a homogeneous deformation of the two materials, and not, as in the prior art, a deformation leaving in some places gaps between the sleeve and the son. Moreover, contrary to what happens with ultrasonic or mechanical crimping, no porosity can be observed between the strands of the cable. Finally, there is an exchange of material between copper and aluminum.

Ainsi, l'ensemble de raccordement revendiqué est de meilleure qualité qu'un ensemble de raccordement de l'art antérieur notamment car l'étanchéité entre le manchon et l'âme est améliorée.Thus, the connection assembly claimed is of better quality than a connection assembly of the prior art in particular because the seal between the sleeve and the core is improved.

De manière à assurer un sertissage par impulsion magnétique de bonne qualité, le manchon de protection présente une forme de révolution sans interruption de matière sur sa circonférence.In order to ensure a good quality magnetic pulse crimping, the protective sleeve has a form of revolution without interruption of material on its circumference.

Selon un mode de réalisation préféré, le manchon de protection est fermé à une première extrémité éloignée de la gaine de manière à former un capuchon de protection.According to a preferred embodiment, the protective sleeve is closed at a first end remote from the sheath so as to form a protective cap.

Avantageusement, le capuchon de protection présente une forme de révolution convergente vers la première extrémité.Advantageously, the protective cap has a convergent shape of revolution towards the first end.

La forme de révolution convergente permet de réduire l'éventuel espace qui peut se former entre le capuchon et l'extrémité dénudée de l'âme lors du sertissage par impulsion magnétique.The convergent shape of revolution makes it possible to reduce the possible space that can form between the cap and the stripped end of the core during magnetic pulse crimping.

Selon un mode particulier de réalisation, la première extrémité du capuchon de protection est prolongée par un doigt de liaison sur lequel un élément est destiné à être relié.According to a particular embodiment, the first end of the protective cap is extended by a connecting finger on which an element is intended to be connected.

Le doigt de liaison sert ainsi de support pour l'assemblage d'une cosse pouvant être standard ou disponible dans le commerce.The connecting finger thus serves as a support for assembling a pod that can be standard or commercially available.

Avantageusement, le doigt de liaison présente une forme de révolution pleine.Advantageously, the connecting finger has a form of full revolution.

Ceci permet d'obtenir un support d'assemblage de la cosse résistant, qui s'avère particulièrement adapté à l'assemblage par sertissage.This makes it possible to obtain an assembly support for the resistant lug, which is particularly suitable for assembly by crimping.

De façon avantageuse, afin de réduire le poids du câble, les fils de l'âme du câble électrique sont en matériau comprenant essentiellement de l'aluminium.Advantageously, in order to reduce the weight of the cable, the wires of the core of the electric cable are made of material essentially comprising aluminum.

De façon avantageuse, pour qu'il soit bon conducteur, le manchon de protection est en matériau comprenant essentiellement du cuivre.Advantageously, for it to be a good conductor, the protective sleeve is made of material essentially comprising copper.

L'invention sera mieux comprise à la lecture des figures annexées, qui sont fournies à titre d'exemples et ne présentent aucun caractère limitatif, dans lesquelles :

  • la figure 1 est une vue en perspective d'un ensemble de raccordement électrique selon un premier mode de réalisation de l'invention ;
  • la figure 2 est une vue en perspective d'un manchon de protection équipant l'ensemble de raccordement électrique de la figure 1 ;
  • les figures 3 à 5 sont des vues similaires à la figure 1 illustrant différentes étapes successives d'assemblage de l'ensemble de raccordement de la figure 1 ;
  • la figure 6 est une vue analogue à la figure 4 illustrant une étape d'assemblage d'un ensemble de raccordement électrique selon un deuxième mode de réalisation de l'invention ;
  • la figure 7 est une vue analogue à la figure 5 d'un ensemble de raccordement électrique selon un troisième mode de réalisation de l'invention ;
  • les figures 8 à 10 sont des vues en perspective illustrant différentes étapes d'assemblage de l'ensemble de raccordement de la figure 7 ;
  • la figure 11 est une vue analogue à la figure 4 illustrant une étape d'assemblage d'un ensemble de raccordement électrique selon un quatrième mode de réalisation ;
  • la figure 12 est une vue en perspective illustrant une étape d'assemblage précédant l'étape de la figure 11 ;
  • la figure 13 est une vue analogue à la figure 12 illustrant une étape d'assemblage d'un ensemble de raccordement électrique selon un cinquième mode de réalisation.
The invention will be better understood on reading the appended figures, which are provided by way of examples and are in no way limiting, in which:
  • the figure 1 is a perspective view of an electrical connection assembly according to a first embodiment of the invention;
  • the figure 2 is a perspective view of a protective sleeve fitted to the electrical connection assembly of the figure 1 ;
  • the Figures 3 to 5 are views similar to the figure 1 illustrating different successive stages of assembly of the connection assembly of the figure 1 ;
  • the figure 6 is a view similar to the figure 4 illustrating a step of assembling an electrical connection assembly according to a second embodiment of the invention;
  • the figure 7 is a view similar to the figure 5 an electrical connection assembly according to a third embodiment of the invention;
  • the Figures 8 to 10 are perspective views illustrating different assembly steps of the connection assembly of the figure 7 ;
  • the figure 11 is a view similar to the figure 4 illustrating a step of assembling an electrical connection assembly according to a fourth embodiment;
  • the figure 12 is a perspective view illustrating an assembly step preceding the step of the figure 11 ;
  • the figure 13 is a view similar to the figure 12 illustrating a step of assembling an electrical connection assembly according to a fifth embodiment.

On a représenté à la figure 1 un ensemble 1 de raccordement électrique selon un premier mode de réalisation de l'invention. Cet ensemble de raccordement 1 comprend un câble électrique 2, un capuchon de protection 4 monté sur le câble électrique 2 et une cosse 5 conductrice électriquement reliée au capuchon de protection 4.We have shown figure 1 a set 1 of electrical connection according to a first embodiment of the invention. This connection assembly 1 comprises an electric cable 2, a protective cap 4 mounted on the electric cable 2 and a conductive lug 5 electrically connected to the protective cap 4.

Le câble électrique 2 comporte une âme 8 conductrice formée par un faisceau de fils conducteurs élémentaires, par exemple des fils métalliques torsadés (non représentés), qui est recouverte par une gaine isolante 10. Les fils de l'âme conductrice 8 sont de préférence réalisés en matériau comprenant essentiellement de l'aluminium, c'est-à-dire plus de 50% en moles d'aluminium.The electric cable 2 comprises a conductive core 8 formed by a bundle of elementary conductor wires, for example twisted metal wires (not shown), which is covered by an insulating sheath 10. The wires of the conductive core 8 are preferably made material comprising essentially aluminum, that is to say more than 50 mol% of aluminum.

La cosse 5 conductrice électriquement est ici une cosse standard, comprenant de façon classique une extrémité de fixation 6, en forme générale d'anneau, et une extrémité déformable 7 destinée à être raccordée électriquement au câble électrique 2, dans le cas présent par l'intermédiaire du capuchon de protection 4 comme on le verra plus loin.The electrically conductive lug 5 is here a standard lug, conventionally comprising a fixing end 6, in the general shape of a ring, and a deformable end 7 intended to be electrically connected to the electric cable 2, in this case by the intermediate protective cap 4 as will be seen later.

L'ensemble de raccordement électrique 1 représenté sur la figure 1 comprend également un manchon d'étanchéité 12 recouvrant la jonction entre la gaine isolante 6 et le capuchon de protection 4.The electrical connection assembly 1 shown in the figure 1 also comprises a sealing sleeve 12 covering the junction between the insulating sheath 6 and the protective cap 4.

On a représenté à la figure 2 le capuchon de protection 4 seul. Il comprend une portion tubulaire 14 de section circulaire, formant manchon, ou toute autre forme de révolution sans interruption de matière sur sa circonférence.We have shown figure 2 the protective cap 4 alone. It comprises a tubular portion 14 of circular section, forming a sleeve, or any other form of revolution without interruption of material on its circumference.

La portion tubulaire 14 est donc avantageusement réalisée par emboutissage ou usinage pour garantir cette absence d'interruption de matière. En variante, si la portion tubulaire 14 est formée d'une feuille métallique enroulée, un apport de matière colmatant tout l'interstice entre les bords jointifs de la feuille sera prévu pour assurer une continuité de matière.The tubular portion 14 is therefore advantageously made by stamping or machining to guarantee this absence of material interruption. Alternatively, if the tubular portion 14 is formed of a wound metal sheet, a supply of material clogging all the gap between the contiguous edges of the sheet will be provided to ensure continuity of material.

La portion tubulaire 14 est fermée à une première extrémité 16 qui est, comme on peut le voir sur la figure 4 notamment, l'extrémité la plus éloignée de la gaine isolante 10 une fois le capuchon de protection 4 serti sur l'âme conductrice 8 du câble électrique 2.The tubular portion 14 is closed at a first end 16 which is, as can be seen on the figure 4 in particular, the end farthest from the insulating sheath 10 once the protective cap 4 is crimped on the conductive core 8 of the electric cable 2.

Comme on peut le voir sur les figures 1 et 5 notamment, la première extrémité 16 est prolongée par un doigt de liaison 18 sur lequel la cosse 5 conductrice électriquement est destinée à être reliée.As can be seen on the Figures 1 and 5 in particular, the first end 16 is extended by a connecting finger 18 on which the electrically conductive lug 5 is intended to be connected.

Le doigt de liaison 18 a, tout comme la portion tubulaire 14, une forme de révolution de section circulaire, mais de diamètre externe inférieur à celui de la portion tubulaire 14.The connecting finger 18 has, just like the tubular portion 14, a form of revolution of circular section, but of external diameter less than that of the tubular portion 14.

Le doigt de liaison 18 est plein afin de constituer un support d'assemblage résistant pour la cosse 5 conductrice électriquement.The connecting finger 18 is solid so as to constitute a resistant assembly support for the electrically conductive lug 5.

De préférence, le capuchon de protection 4 est intégralement réalisé en un matériau comprenant essentiellement du cuivre, c'est-à-dire plus de 50% en moles de cuivre.Preferably, the protective cap 4 is integrally made of a material comprising essentially copper, that is to say more than 50 mol% of copper.

On va maintenant décrire, en référence aux figures 1 à 5, les étapes relatives à l'invention du procédé d'assemblage de l'ensemble de raccordement électrique 1.We will now describe, with reference to Figures 1 to 5 , the steps relating to the invention of the assembly method of the electrical connection assembly 1.

A un premier poste de découpage, on découpe une portion de la gaine isolante 10 recouvrant l'âme conductrice 8 du câble électrique 2 pour dénuder une extrémité 20 de cette âme.At a first cutting station, a portion of the insulating sheath 10 covering the conductive core 8 of the electric cable 2 is cut to expose an end 20 of this core.

On retire ensuite la portion ainsi découpée de la gaine isolante 10, pour obtenir le câble électrique 2 comprenant une extrémité dénudée 20 représenté à la figure 3.The portion thus cut off is then removed from the insulating sheath 10 to obtain the electric cable 2 comprising a stripped end 20 shown in FIG. figure 3 .

Puis, avant le convoyage vers un second poste où la cosse 5 conductrice électriquement sera mise en place dans l'ensemble de raccordement 1, on procède à un sertissage du capuchon de protection 4 sur l'âme conductrice 8 de manière à en comprimer les fils et les protéger contre l'effilochage.Then, before conveying to a second station where the electrically conductive lug 5 will be placed in the connection assembly 1, the protective cap 4 is crimped onto the conductive core 8 so as to compress the wires. and protect them from fraying.

Ce sertissage est réalisé par impulsion magnétique, ce qui permet d'obtenir un serti uniforme sur la circonférence de l'âme conductrice 8 et limite ainsi les espaces pouvant se former entre l'âme conductrice 8 et le capuchon de protection 4, comme on peut le voir sur la figure 4.This crimping is carried out by magnetic pulse, which makes it possible to obtain a uniform set on the circumference of the conductive core 8 and thus limits the spaces that can form between the conductive core 8 and the protective cap 4, as can be see him on the figure 4 .

Après cette étape de sertissage, on transporte ou convoie le câble électrique 2 dont l'extrémité dénudée 20 est ainsi protégée par le capuchon de protection 4 vers un second poste d'assemblage.After this crimping step, the electric cable 2 is conveyed or conveyed, the stripped end 20 is thus protected by the protective cap 4 to a second assembly station.

A ce second poste, on procède à un sertissage de la cosse conductrice électriquement 6 directement sur le capuchon de protection 4.At this second station, the electrically conductive lug 6 is crimped directly onto the protective cap 4.

Plus précisément, on sertit la cosse 5 conductrice électriquement par repliage d'ailes 22 de sertissage portées par la cosse 5 conductrice électriquement autour du doigt de liaison 18, pour obtenir l'assemblage de la figure 5.More specifically, the electrically conductive lug is crimped by folding crimping flanges 22 carried by the electrically conductive lug around the connecting finger 18 to obtain the assembly of the lug. figure 5 .

On notera que dans une variante non représentée, la cosse 5 conductrice électriquement peut être sertie sur le doigt de liaison 18 par impulsion magnétique.Note that in a variant not shown, the electrically conductive lug 5 can be crimped on the connecting finger 18 by magnetic pulse.

Enfin, on assemble le manchon d'étanchéité 12 recouvrant la jonction 24 entre la gaine isolante 10 et le capuchon de protection 4. Le manchon d'étanchéité 12 s'étend ainsi en partie sur la gaine isolante 10 et en partie sur la portion tubulaire 14.Finally, it assembles the sealing sleeve 12 covering the junction 24 between the insulating sheath 10 and the protective cap 4. The sealing sleeve 12 thus extends partly on the insulating sheath 10 and partly on the tubular portion 14.

Le manchon d'étanchéité 12 est par exemple placé autour de la jonction 24 puis est fixé autour de cette jonction par rétractation par chauffage.The sealing sleeve 12 is for example placed around the junction 24 and is fixed around this junction by retraction by heating.

Dans un deuxième mode de réalisation de l'invention dont une étape est présentée à la figure 6, on évite l'utilisation du manchon d'étanchéité 12 en faisant en sorte que le capuchon de protection 4 recouvre en partie la gaine isolante 10.In a second embodiment of the invention, a step of which is presented to the figure 6 , the use of the sealing sleeve 12 is avoided by ensuring that the protective cap 4 partly covers the insulating sheath 10.

Plus particulièrement, l'extrémité du capuchon de protection 4 la plus proche de la gaine isolante 10 est reliée à un col d'étanchéité 26 par l'intermédiaire d'un épaulement 27 du capuchon de protection 4. Ce col 26 comprime la gaine après assemblage par sertissage magnétique.More particularly, the end of the protective cap 4 closest to the insulating sheath 10 is connected to a sealing collar 26 via a shoulder 27 of the protective cap 4. This collar 26 compresses the sheath after assembly by magnetic crimping.

On a représenté à la figure 7 un ensemble de raccordement électrique 1 selon un troisième mode de réalisation de l'invention.We have shown figure 7 an electrical connection assembly 1 according to a third embodiment of the invention.

Dans celui-ci, la cosse 5 conductrice électriquement est sertie directement sur la portion tubulaire 14 du capuchon de protection 4. En effet, dans cet exemple, la première extrémité fermée 16 n'est pas prolongée par un doigt de liaison 18, comme on peut le voir aux figures 8 à 10.In this, the electrically conductive lug 5 is crimped directly onto the tubular portion 14 of the protective cap 4. In this example, the first closed end 16 is not extended by a connecting finger 18, as is can see it at Figures 8 to 10 .

Après découpe de la gaine isolante 10 à un premier poste de découpage, on enfile le capuchon de protection 4 sur l'âme conductrice 8 du câble électrique 2 comme on peut le voir à la figure 8.After cutting the insulating sheath 10 at a first cutting station, the protective cap 4 is threaded onto the conductive core 8 of the electric cable 2 as can be seen in FIG. figure 8 .

Puis, on procède à un sertissage par impulsion magnétique du capuchon de protection 4 sur l'âme conductrice 8, de manière à ce que la portion tubulaire 14 comprime les fils de l'âme conductrice 8 comme on peut le voir à la figure 9.Then, a magnetic pulse crimping of the protective cap 4 is carried out on the conductive core 8, so that the tubular portion 14 compresses the wires of the conducting core 8 as can be seen in FIG. figure 9 .

On procède ensuite, comme illustré à la figure 10, au sertissage d'une cosse 5 conductrice électriquement par repliage d'ailes de sertissage 22 directement sur la portion tubulaire 14 du capuchon de protection 4.We proceed then, as illustrated in figure 10 crimping an electrically conductive terminal 5 by folding crimping flanges 22 directly on the tubular portion 14 of the protective cap 4.

On notera que dans une variante non représentée, la cosse 5 conductrice électriquement peut être sertie sur la portion tubulaire 14 par impulsion magnétique.Note that in a variant not shown, the electrically conductive lug 5 can be crimped on the tubular portion 14 by magnetic pulse.

On a représenté à la figure 11 un ensemble de raccordement électrique 1 selon un quatrième mode de réalisation de l'invention. Comme précédemment, le capuchon de protection 4 est assemblé par sertissage par impulsion magnétique autour de l'âme conductrice 8 du câble électrique 2.We have shown figure 11 an electrical connection assembly 1 according to a fourth embodiment of the invention. As previously, the protective cap 4 is assembled by magnetic pulse crimping around the conductive core 8 of the electric cable 2.

Dans cet exemple, le capuchon de protection 4 présente une portion 28 ayant une forme de révolution convergente vers la première extrémité 16 du capuchon de protection 4.In this example, the protective cap 4 has a portion 28 having a convergent shape of revolution towards the first end 16 of the protective cap 4.

La forme de la portion convergente 28 permet de réduire l'éventuel espace qui peut se former entre le capuchon de protection 4 et l'extrémité dénudée 20 de l'âme 8 conductrice lors du sertissage par impulsion magnétique.The shape of the convergent portion 28 makes it possible to reduce the possible space that may form between the protective cap 4 and the stripped end 20 of the conductive core 8 during magnetic pulse crimping.

Avant ce sertissage par impulsion magnétique, la portion convergente 28 a une forme sensiblement tronconique comme illustré sur la figure 12.Before this magnetic pulse crimping, the convergent portion 28 has a substantially frustoconical shape as illustrated in FIG. figure 12 .

La portion convergente 28 est avantageusement prolongée, à sa première extrémité 16, par un doigt de liaison 18 analogue à celui des premier et deuxième modes de réalisation.The convergent portion 28 is advantageously extended, at its first end 16, by a connecting finger 18 similar to that of the first and second embodiments.

Dans un cinquième mode de réalisation illustré à la figure 13, le capuchon de protection 4 comporte une portion convergente 28 analogue à celle du quatrième mode de réalisation, sans être munie d'un doigt de liaison.In a fifth embodiment illustrated in figure 13 , the protective cap 4 comprises a convergent portion 28 similar to that of the fourth embodiment, without being provided with a connecting finger.

L'invention n'est pas limitée aux modes de réalisation présentés et d'autres modes de réalisation apparaîtront clairement à l'homme du métier.The invention is not limited to the embodiments presented and other embodiments will become apparent to those skilled in the art.

Ainsi, le capuchon d'étanchéité peut, s'il ne présente pas d'extrémité fermée à son extrémité, constituer un manchon d'étanchéité.Thus, the sealing cap may, if it has no end closed at its end, constitute a sealing sleeve.

Claims (12)

Procédé d'assemblage d'un ensemble de raccordement électrique (1) comprenant une cosse conductrice électriquement (5) et un câble électrique (2), le câble électrique (2) comportant une âme (8) métallique conductrice formée par un faisceau de fils conducteurs élémentaires recouverte par une gaine isolante (10), comprenant : - une étape de découpage de la gaine (10) pour dénuder une extrémité (20) de l'âme (8) du câble (2),
caractérisé en ce que il comprend en outre : - une étape de sertissage par impulsion magnétique d'un manchon de protection (4) en matériau conducteur sur l'extrémité dénudée (20) de l'âme (8) du câble (2), et - une étape d'assemblage d'une cosse conductrice électriquement (5) sur le manchon de protection (4). A method of assembling an electrical connection assembly (1) comprising an electrically conductive terminal (5) and an electrical cable (2), the electrical cable (2) comprising a conductive metal core (8) formed by a bundle of wires elementary conductors covered by an insulating sheath (10), comprising: a step of cutting the sheath (10) to expose an end (20) of the core (8) of the cable (2),
characterized in that it further comprises: - a magnetic pulse crimping step of a protective sleeve (4) of conductive material on the stripped end (20) of the core (8) of the cable (2), and - A step of assembling an electrically conductive lug (5) on the protective sleeve (4). Procédé d'assemblage selon la revendication 1, l'étape d'assemblage étant réalisée par repliage d'ailes (22) de sertissage portées par la cosse (5) autour du manchon de protection (4).Assembly method according to claim 1, the assembly step being performed by folding crimping wings (22) carried by the lug (5) around the protective sleeve (4). Procédé d'assemblage selon l'une quelconque des revendications précédentes, comprenant en outre une étape d'assemblage d'un manchon d'étanchéité (12) recouvrant la jonction (24) entre la gaine (10) et le manchon de protection (4).An assembly method according to any one of the preceding claims, further comprising a step of assembling a sealing sleeve (12) covering the junction (24) between the sheath (10) and the protective sleeve (4). ). Procédé d'assemblage selon l'une quelconque des revendications précédentes, dans lequel le manchon de protection (4) recouvre en partie la gaine (10).Assembly method according to any one of the preceding claims, wherein the protective sleeve (4) partly covers the sheath (10). Ensemble de raccordement électrique comprenant une cosse (5) conductrice électriquement et un câble électrique (2), le câble électrique (2) comportant une âme (8) métallique conductrice formée par un faisceau de fils conducteurs élémentaires recouverte par une gaine isolante (10),
caractérisé en ce que l'ensemble comprend en outre : - un manchon de protection (4) en matériau conducteur serti par impulsion magnétique sur une extrémité dénudée (20) de l'âme, et - une cosse (5) conductrice électriquement sertie sur le manchon de protection (4). Electrical connection assembly comprising an electrically conductive lug (5) and an electric cable (2), the electric cable (2) comprising a conductive metal core (8) formed by a bundle of elementary conductor wires covered by an insulating sheath (10) ,
characterized in that the assembly further comprises: - a protective sleeve (4) of conductive material set by magnetic pulse on a stripped end (20) of the core, and - a lug (5) electrically conductive crimped on the protective sleeve (4). Ensemble de raccordement électrique selon la revendication 5, dans lequel le manchon de protection (4) présente une forme de révolution sans interruption de matière sur sa circonférence.Electrical connection assembly according to claim 5, wherein the protective sleeve (4) has a form of revolution without interruption of material on its circumference. Ensemble de raccordement électrique selon la revendication 5 ou 6, dans lequel le manchon de protection (4) est fermé à une première extrémité (16) éloignée de la gaine (10) de manière à former un capuchon de protection.Electrical connection assembly according to claim 5 or 6, wherein the protective sleeve (4) is closed at a first (16) remote end the sheath (10) so as to form a protective cap. Ensemble de raccordement électrique selon la revendication 8, dans lequel le capuchon de protection (4) présente une forme de révolution convergente (28) vers la première extrémité (16).An electrical connection assembly according to claim 8, wherein the protective cap (4) has a convergent revolution shape (28) towards the first end (16). Ensemble de raccordement électrique selon l'une quelconque des revendications 7 à 8, dans lequel la première extrémité (16) du capuchon de protection (4) est prolongée par un doigt de liaison (18) sur lequel un élément (5) est destiné à être relié.Electrical connection assembly according to any one of claims 7 to 8, wherein the first end (16) of the protective cap (4) is extended by a connecting finger (18) on which an element (5) is intended for to be connected. Ensemble de raccordement électrique selon la revendication 9, dans lequel le doigt de liaison (18) présente une forme de révolution pleine.Electrical connection assembly according to claim 9, wherein the connecting finger (18) has a solid revolution form. Ensemble de raccordement électrique selon l'une quelconque des revendications 5 à 10, dans lequel les fils de l'âme (8) du câble électrique (2) sont en matériau comprenant essentiellement de l'aluminium.Electrical connection assembly according to any one of claims 5 to 10, wherein the son of the core (8) of the electric cable (2) are made of material comprising essentially aluminum. Ensemble de raccordement électrique selon l'une quelconque des revendications 5 à 11, dans lequel le manchon de protection (4) est en matériau comprenant essentiellement du cuivre.Electrical connection assembly according to any one of claims 5 to 11, wherein the protective sleeve (4) is made of material essentially comprising copper.
EP15194894.0A 2014-11-19 2015-11-17 Assembly of an electrical connection unit Withdrawn EP3024092A1 (en)

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FR3028677B1 (en) 2016-12-30

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