EP1463149B1 - Verfahren zum Abdichten eines vieladrigen Verbindungskabels - Google Patents

Verfahren zum Abdichten eines vieladrigen Verbindungskabels Download PDF

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Publication number
EP1463149B1
EP1463149B1 EP04290765A EP04290765A EP1463149B1 EP 1463149 B1 EP1463149 B1 EP 1463149B1 EP 04290765 A EP04290765 A EP 04290765A EP 04290765 A EP04290765 A EP 04290765A EP 1463149 B1 EP1463149 B1 EP 1463149B1
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EP
European Patent Office
Prior art keywords
strands
cable
resin
crimping
sheath
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04290765A
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English (en)
French (fr)
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EP1463149A1 (de
Inventor
Philippe Georges Marie Burguburu
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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Filing date
Publication date
Application filed by Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP1463149A1 publication Critical patent/EP1463149A1/de
Application granted granted Critical
Publication of EP1463149B1 publication Critical patent/EP1463149B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H01R4/187—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 combined with soldering or welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins

Definitions

  • the present invention relates to a method for sealing a multi-stranded connection cable, in particular a grounding cable, or provided with an electrical connection lug, in particular with a part of the box or other similar massive structure.
  • a motor vehicle is connected to other similar cables by a splice.
  • connection cables generally comprising each several metal strands flexible, housed inside a sheath or insulating envelope.
  • the electric cable consists of several flexible metal strands, as is the most general case, the free spaces between these strands themselves according to the length of the cable and / or between the peripheral strands and its insulating sheath, are not sealed due in particular to the clearance between these strands and between them and their sheath, so that the aforementioned pressure variations are transmitted from one end to the other.
  • the interstices between the strands being very narrow, they behave as capillary tubes vis-à-vis liquid fluids that can bathe their end, outside the housing.
  • the ends of the connecting cables are either connected to a housing supplying any electrical component of a vehicle or to a sealed interconnection box, or are arranged inside the housing. cabin itself, in an area that remains dry permanently.
  • the opposite ends in the case of grounding cables, are usually fixed directly by terminal lugs to the vehicle body and are thus subjected to splashing water, or even immersion. possible complete in a liquid medium, immersion which may be temporary but which may also extend for a significant period.
  • connection lugs it is possible to avoid this disadvantage by locating the grounding points by the connection lugs in specific areas of the passenger compartment that always remain away from projections or water runoff.
  • this solution is not possible if we always want to have mass connections that are very short.
  • the metal strands of the cables are welded together, generally by the known technique known as ultrasound, and also soldered to the single grounding cable, the sealing being performed around this weld inside a casing or a similar envelope that surrounds the assembly, restoring the continuity of the sheaths of different son.
  • US Pat. No. 6,334,798 discloses a method for improving the connection between the metal of the terminal and the cable strands of depositing a resin on the crimping.
  • the document EP 1 235 305 discloses a method in which resin is deposited at the end of a cable to perform an overmolding.
  • the present invention relates to a method for sealing a cable, and more particularly to a ground connection cable, in particular at a terminal connection with it, or a splice joining such a cable grounded with its terminal connection to several other cables, which can be implemented at the same time as the conventional operations of crimping the terminal or splicing, thereby avoiding further intervention and recovery of the cable , the method opposing the migration of a fluid, generally water, along the strands of this cable, between the terminal and / or the splice at one end and a device electrically connected to the cable provided with its pod at its opposite end, or other cables coming out of the splice.
  • the method according to the invention applicable to a cable comprising a plurality of flexible metal strands, surrounded by an insulating protective sheath, is characterized in that it consists, after stripping one end of the strands by localized removal of the sheath of the cable for crimping a connecting lug or for joining said end by welding to the equally stripped end of the strands of other cables to form a splice, to crimp the lug or to weld the strands of the cables by laying on and between these strands a determined amount of a high wettability resin vis-à-vis the metal of these strands and their sheath, to fill the capillary interstices between them and / or their sheath so as to form a cap the end of the sheath to make the cable tight towards its opposite end.
  • the crimping of the lug or the welding of the strands is carried out simultaneously with the resin deposition.
  • a terminal lug in which a terminal lug is crimped on one end of the strands of the cable, this lug comprising a fastening lug extended by a crimping bracelet formed by two wings surrounding said end, the method consists in locally exposing these metal strands beyond the crimping ring of the terminal to a clamping ring of the cable sheath, at a distance from the terminal, and to crimping, the wings of the bracelet and the ring of clamping, respectively on bare strands and on the sheath of the cable, by depositing in the zone delimited between the bracelet and the ring, the determined quantity of resin ensuring the sealing of this cable.
  • the crimping of the wings of the bracelet and the crimping of the clamping ring are made concomitantly.
  • the deposition of the resin is carried out simultaneously with the crimping of the wings of the bracelet and / or the crimping of the clamping ring.
  • the crimping bracelet is cut, in line with the zone of deposit of the resin on the stripped strands of the cable, to form an indentation in the bracelet, through which the resin is deposited so that it is distributed and spreads easily on and between the strands.
  • the method consists in making the mechanical and electrical connection of the strands of the cables. , previously stripped, depositing the determined amount of resin to the connection of the strands to make them sealed towards their respective ends.
  • the deposition of the resin and the mechanical and electrical joining of the cables are carried out simultaneously.
  • the resin deposited on the strands of the cable is highly surfactant, inert or capable of polymerizing in situ.
  • the resin does not polymerize, it is preferably a hydrophobic product.
  • the resin can be colored to allow optical control of its deposition and distribution between the strands by means of an automatic camera.
  • the resin is deposited by means of a tube, extending in a direction substantially perpendicular to that of the stripped strands of the cable, this tube preferably having a beveled end. or other, shaped to marry more closely the profile opposite these strands.
  • the reference numeral 1 denotes a conventional electrical connection cable formed by a set of flexible metal strands 2 surrounded by an insulating protective sheath 3, these strands 2 being in particular intended to be placed on the mass by a connection terminal 4, able to be crimped on one end of the cable 1.
  • the lug 4 comprises a lug 5 for fixing it on a support 6, not shown in Figure 1 but visible in Figure 2, constituting a suitable ground point, such as an element. the body of a motor vehicle (not shown).
  • the lug 5 comprises for this purpose a central bore 7 for mounting a locking screw (also not shown in the drawing).
  • the connecting lug 4 comprises crimping means 8 on the end of the cable where the insulating sheath 3 is cut beforehand to expose bare metal strands 2, so as to allow a satisfactory electrical contact of these means 8 with these strands.
  • these means 8 comprise, firstly a crimping bracelet 9, comprising two separate wings, respectively 10 and 11, to clamp together the metal strands 2 in the part of these strands where the insulating sheath 3 has has been removed, on the other hand a clamping ring 12, also split, clean to surround and maintain the sheath 3 beyond the bracelet 9.
  • Figure 3 shows, in longitudinal section, the end of the cable 1 with its strands 2 and its insulating sheath 3.
  • This figure also shows schematically, the means for ensuring the crimping of the bracelet 9 on the metal strands 2 previously stripped and tightening the ring 12 on the sheath 3, these means comprising two punches or the like, respectively 13 to the right of the bracelet and 14 opposite the ring.
  • the punches 13 and 14 co-operate with an anvil or the like 15 which is fixed and has grooves 16 (FIG. 4) and 17 (FIG. , to receive and hold in place the end of the cable 1, respectively right of the bracelet 9 and the ring 12.
  • the punches 13 and 14 themselves comprise, facing the grooves 16 and 17 of the anvil 15, recessed portions 18 and 19, the portion 18 being formed of two cylindrical elements 20 and 21 of axes transversely offset, so when applying the punch 13 to the bracelet 9 mounted in the groove 16 of the anvil 15, the two wings 10 and 11 of this bracelet are properly crushed on the strands 2 of the cable, conforming to a section substantially in the heart, the ends of the wings 10 and 11 bending towards the center of the cable so as to anchor in it and increase the locking effect of the bracelet 9 on the metal strands 2. During this operation, they undergo a partial deformation, called compaction, passing from a circular section to an approximately polygonal shape, as shown schematically in the sectional view of Figure 4.
  • compaction partial deformation
  • this split ring is immobilized on the outer surface of the insulating sheath 3, the metal strands 2 inside this sheath retaining approximately their circular section.
  • the method then consists, as represented in FIG. 3, preferably simultaneously with the operations of crimping the bracelet 9 and tightening the ring 12, respectively on the stripped metal strands 2 at the end. of the cable and on the insulating sheath 3 in the manner indicated above, to be injected in the zone of the cable situated between the stripped strands 2 thereof, which are between the strap 9 and the ring 12, an appropriate quantity a resin or equivalent product, adapted to make the cable tight and in particular to eliminate any possibility of routing a liquid fluid, especially water, between these strands 2 inside the insulating sheath 3, at the beyond pod 4.
  • the crimping installation further comprises a tube 22, joined by a connection 23 to a source of resin 25 or a similar product, delivered by the end of this tube in the aforementioned region which separates the bracelet 9 of the ring 12.
  • the wings 10 and 11 of the bracelet 9 are cut to present therein a notch 24, leaving free space between the bracelet and the ring for deposit there an appropriate amount 25 of the resin delivered by the tube 22.
  • the end 26 of this tube through which the resin brought into contact with the strands 2 of the cable 1 has a bevelled shape in order to better match the profile of the strands in the transition zone between the ring and the bracelet.
  • This resin 25 is preferably selected strongly surfactant and having a high coefficient of wettability vis-à-vis the metal which constitutes the strands 2 of the cable, usually copper.
  • This resin can be inert or polymerizable, and if it does not polymerize, must have good hydrophobic properties to oppose the penetration of water into the interstices that form narrow capillary tubes between the strands 2 and between them. ci and the insulating sheath 3, and also between these strands to the crimping wrist strap 9 where, due to the partial crushing of the strands by the deformation of the wings 10 and 11, these interstices are even narrower.
  • the resin put in place makes it possible to avoid the presence of air which may, over time, oxidize the copper strands and increase the contact resistance of these strands between each other and between these strands and the bracelet 9.
  • these interstices initially filled with air are progressively occupied by the resin which forms a rigid plug, making the cable perfectly tight and avoiding any upflow of water from the ground connection terminal to the ground.
  • opposite end of the cable which enters a housing (not shown) where it can be directly connected to a device electrical or electronic control or control of the motor vehicle.
  • the method according to the invention has the advantage, apart from a particularly safe and effective sealing, of allowing the resin to be injected between the strands of the cable in masked time, simultaneously with the implementation of the operations of crimping the terminal, making any subsequent recovery of this cable unnecessary; this operation can also be performed in another workstation, preferably automatically.
  • FIG. 7 illustrates an alternative embodiment of the method of the invention, in which a cable 50, comprising, as previously, metal wires 51 surrounded by an insulating sheath 52, comprises at one of its ends a connection lug 53 whose structure is identical to that adopted in the previous example, the crimping bracelet may be devoid of the indentation marked 24 in this first example.
  • the ground cable 50 is intended to be joined to several similar cables 54 and 55 by a splice, schematically designated as a whole under the reference 56, the cables 54 and 55 being connected directly to sealed housings (not shown).
  • the metal strands 57 and 58 of the cables 54 and 55 are stripped beyond their own sheath, respectively 59 and 60, and are directly welded to the equally stripped ends of the strands 51 of the first cable 50, this weld by way of example by conventional ultrasonic welding equipment, comprising two electrodes respectively 61 and 62, fixed on electrode holders 63 and 64 joined to a suitable voltage source and to a control device (not shown), classic for this type of operation.
  • one of the electrode carriers in this case the electrode holder 63, is equipped with a tube 65 to bring a suitable quantity of resin 66 to the right of the welding zone between the strands 51, this resin 66, of the same nature as that used in the first example, allowing the right of the splice 56 to make the connection of the various strands perfectly tight and to prevent any water from the pod 53 and running between them strands 51 under the insulating sheath 52 of the first cable 50, does not cross the splice 56 and progresses beyond, through the capillary interstices between the strands and the sheaths, inside the cables 54 and 55.
  • the method of the invention has particularly advantageous advantages since, as already indicated above, it makes it possible to perform the deposition of the resin at the same time as the crimping of the terminal.
  • an excellent seal is obtained since it consists in making a resin plug at the end of the sheath, the resin filling the interstices between the strands and / or between these and the sheath and thus preventing any recovery of water inside the latter.
  • a small amount of resin is sufficient since the result can be obtained with a plug of short length (of the order of a few millimeters or centimeter for the usual applications especially in the automotive field). In any case, the skilled person will determine depending on the nature and geometry of the cable, the amount of resin to obtain a sufficiently long plug to have a good seal and good mechanical strength.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Processing Of Terminals (AREA)
  • Cable Accessories (AREA)
  • Insulated Conductors (AREA)

Claims (13)

  1. Verfahren zum Abdichten eines Kabels, das sich auf ein Kabel (1, 50) mit mehreren flexiblen Metalladern (2, 51) anwenden lässt, die von einer isolierenden Schutzhülle (3, 52) umgeben sind, dadurch gekennzeichnet, dass es darin besteht, nach dem Abisolieren eines Endes der Adern durch örtlich begrenztes Entfernen der Kabelhülle, um daran einen Verbindungs-Kabelschuh (4) zu crimpen oder das Ende durch Schweißen mit dem ebenfalls abisolierten Ende der Adern (57, 58) anderer Kabel (54, 55) zu verbinden, um einen Spleiß (56) zu bilden, das Crimpen des Kabelschuhs oder das Schweißen der Kabeladern durchgeführt werden, während auf und zwischen die Adern eine bestimmte Menge eines Harzes (25, 66) aufgebracht wird, das eine hohe Benetzungsfähigkeit gegenüber dem Metall der Adern und ihrer Hülle besitzt, um die Kapillarzwischenräume zwischen den Adern und/oder ihrer Hülle zu füllen, sodass ein Verschluss am Ende der Hülle gebildet wird, der das Kabel in Richtung auf sein gegenüberliegendes Ende abdichtet.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass das Crimpen des Kabelschuhs oder das Schweißen der Adern gleichzeitig mit dem Aufbringen des Harzes durchgeführt werden.
  3. Verfahren nach Anspruch 1 oder 2, bei dem ein Verbindungs-Kabelschuh (4) an ein Ende der Adern (2) des Kabels gecrimpt wird, wobei der Kabelschuh einen Befestigungslappen (5) aufweist, der von einem Crimp-Ring (9) verlängert wird, welcher von zwei Flügeln (10, 11) gebildet ist, die das Ende umgeben, dadurch gekennzeichnet, dass es darin besteht, die Metalladern jenseits des Crimp-Rings des Kabelschuhs bis zu einem Klemmring (12) der Hülle (4) des Kabels lokal in Entfernung vom Kabelschuh abzuisolieren und das Crimpen der Flügel des Rings und des Klemmrings an die abisolierten Adern beziehungsweise an die Hülle des Kabels durchzuführen, während in dem Bereich zwischen den Ringen die bestimmte Menge an Harz (25) aufgebracht wird, die für die Dichtheit des Kabels sorgt.
  4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass das Crimpen der Flügel des Bands und das Crimpen des Klemmrings gleichzeitig durchgeführt werden.
  5. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Harz gleichzeitig mit dem Crimpen der Flügel des Rings und/oder dem Crimpen des Klemmrings aufgebracht wird.
  6. Verfahren nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass das Harz auch am Crimp-Ring (9) aufgebracht wird.
  7. Verfahren nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, dass im Crimp-Ring (9) an dem Bereich, in dem das Harz (25) auf die abisolierten Adern (2) des Kabels aufgebracht wird, ein bogenförmiger Ausschnitt (24) hergestellt wird.
  8. Verfahren nach Anspruch 1, bei dem die Adern (51) des Kabels mit den Enden der Adern (57, 58) anderer Kabel durch Schweißen verbunden werden, um einen Spleiß herzustellen, dadurch gekennzeichnet, dass es darin besteht, die mechanische und elektrische Verbindung der zuvor abisolierten Kabeladern herzustellen, während die bestimmte Menge an Harz (66) auf die Verbindung der Adern aufgebracht wird, um sie in Richtung auf ihre jeweiligen Enden abzudichten.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass gleichzeitig das Harz aufgebracht und die mechanische und elektrische Verbindung der Kabel hergestellt wird.
  10. Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das auf die Adern (2, 51) des Massekabels aufgebrachte Harz (25, 66) sehr kapillaraktiv, inert oder fähig ist, in situ zu polymerisieren.
  11. Verfahren nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass das Harz, wenn es nicht polymerisiert, aus einem wasserabweisenden Produkt besteht.
  12. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Harz (25, 66) gefärbt ist, um eine optische Kontrolle seines Aufbringens und seiner Verteilung zwischen den Adern zu ermöglichen.
  13. Verfahren nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass das Harz (25, 66) mithilfe eines Rohrs (22, 65) aufgebracht wird, das sich im Wesentlichen senkrecht zu den abisolierten Adern (2, 51) des Kabels erstreckt und vorzugsweise ein abgeschrägtes Ende aufweist, um sich möglichst nah an die ihm gegenüberliegende Form der Adern anzuschmiegen.
EP04290765A 2003-03-25 2004-03-23 Verfahren zum Abdichten eines vieladrigen Verbindungskabels Expired - Lifetime EP1463149B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0303610A FR2853151A1 (fr) 2003-03-25 2003-03-25 Procede pour rendre etanche un cable de liaison multibrins de mise a la masse
FR0303610 2003-03-25

Publications (2)

Publication Number Publication Date
EP1463149A1 EP1463149A1 (de) 2004-09-29
EP1463149B1 true EP1463149B1 (de) 2007-05-16

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Application Number Title Priority Date Filing Date
EP04290765A Expired - Lifetime EP1463149B1 (de) 2003-03-25 2004-03-23 Verfahren zum Abdichten eines vieladrigen Verbindungskabels

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EP (1) EP1463149B1 (de)
AT (1) ATE362661T1 (de)
DE (1) DE602004006458T2 (de)
ES (1) ES2282818T3 (de)
FR (1) FR2853151A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2910693A1 (fr) * 2006-12-22 2008-06-27 Peugeot Citroen Automobiles Sa Cable electrique et procede d'isolation de cable electrique
FR2910694A1 (fr) * 2006-12-22 2008-06-27 Peugeot Citroen Automobiles Sa Cable electrique et procede d'isolation de cable electrique
FR2929048B1 (fr) * 2008-03-21 2012-12-14 Leoni Wiring Systems France Ensemble de raccordement electrique et procede de fabrication de l'ensemble
FR2932021B1 (fr) * 2008-06-03 2010-07-30 Leoni Wiring Systems France Installation et procede de fabrication d'un article comprenant un cable electrique
DE102008041382A1 (de) * 2008-08-20 2010-02-25 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Anschlussterminal mit einer Vergießung einer Elektroleitung und ein Verfahren zur Herstellung der Vergießung
FR2947105B1 (fr) * 2009-06-18 2012-11-16 Cml Innovative Technologies Dispositif de connexion electrique, systeme de distribution de tels dispositifs et procede de montage d'un cable electrique dans un tel dispositif
DE102013205235A1 (de) * 2013-03-25 2014-09-25 Tyco Electronics Amp Gmbh Crimpverbindung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0828240B2 (ja) * 1990-05-25 1996-03-21 矢崎総業株式会社 電線相互の圧着接続構造及び圧着接続方法
JP2000299140A (ja) * 1999-04-15 2000-10-24 Yazaki Corp 電線と接続端子の接続方法及び接続構造
US6501025B2 (en) * 1999-11-04 2002-12-31 Clements Manufacturing L.L.C. Method and apparatus for blocking fluid and fluid vapors
JP2001167640A (ja) * 1999-12-09 2001-06-22 Yazaki Corp 被覆電線の端末接続部およびその防水処理装置
JP2002252050A (ja) * 2001-02-26 2002-09-06 Yazaki Corp コネクタ

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Publication number Publication date
EP1463149A1 (de) 2004-09-29
DE602004006458T2 (de) 2008-01-17
ES2282818T3 (es) 2007-10-16
ATE362661T1 (de) 2007-06-15
FR2853151A1 (fr) 2004-10-01
DE602004006458D1 (de) 2007-06-28

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