EP3118932B1 - Elektrisches anschlussorgan für elemente eines elektrischen kabels - Google Patents

Elektrisches anschlussorgan für elemente eines elektrischen kabels Download PDF

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Publication number
EP3118932B1
EP3118932B1 EP16178906.0A EP16178906A EP3118932B1 EP 3118932 B1 EP3118932 B1 EP 3118932B1 EP 16178906 A EP16178906 A EP 16178906A EP 3118932 B1 EP3118932 B1 EP 3118932B1
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EP
European Patent Office
Prior art keywords
tube
electrical
cable according
segment
electrical connection
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.)
Active
Application number
EP16178906.0A
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English (en)
French (fr)
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EP3118932A1 (de
Inventor
Cédric MARTY
Frédéric LHUGUET
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.)
Vm Industries
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Vm Industries
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Priority to SI201630976T priority Critical patent/SI3118932T1/sl
Publication of EP3118932A1 publication Critical patent/EP3118932A1/de
Application granted granted Critical
Publication of EP3118932B1 publication Critical patent/EP3118932B1/de
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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
    • H01R4/20—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
    • 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 invention relates to an electrical connection member for connecting electrical wiring elements.
  • a motor vehicle generally comprises several electrical devices, in particular electronic. In order to connect these devices together, it is known to use one or more bundles of electric cables. These electrical cables include electrical conductors, generally made of copper. In order to reduce the weight of the bundle (s), it is envisaged to replace the copper conductors with aluminum conductors.
  • Copper alloy open barrel lugs are suitable for crimping one copper conductor to another copper conductor.
  • this type of terminal is not suitable for connecting aluminum conductors together by crimping, because aluminum has an electrical conductivity lower than that of copper. It follows that it would be necessary to modify the shape and dimensions of the terminals to make them suitable for aluminum cables, which would be very expensive.
  • Aluminum open barrel terminals are not suitable either, since they pose problems of electrolysis and reliability in terms of electrical conduction over time.
  • Tubular lugs are commonly used to connect copper conductors. However, these tubular lugs cannot have a complex shape, which is sometimes preferable in order to optimize several aspects related to the harness, such as the bulk in the vehicle.
  • FR2917244A1 discloses a terminal comprising two tubular end sections for crimping electric cables, the two end sections being separated by stamped intermediate section defining a sealing zone.
  • US2010003867A1 discloses an electric cable provided with a jacket threaded over one end of the electric cable and crushed on the electric cable, and a contact element glued or welded to the jacket.
  • An object of the invention is to alleviate these problems by providing a means making it possible to achieve a sealed connection between two electrical wiring elements, and this with simple means which can be used for copper conductors and for aluminum conductors.
  • a cable according to claim 1 is provided.
  • the annular shape of the end ensuring the tightness of the connection between the conductor and the electrical connection member. It is possible to crimp an open barrel terminal on the deformed section of the tube. The shape of the deformed section makes it possible to obtain a crimping with a high compaction rate, which guarantees the tightness of the connection between the terminal and the electrical connection member. Whether the electrical conductor is made of aluminum or copper, the device ensures a good electrical connection between the conductor and the terminal.
  • the electrical connection member avoids having to resort to ultrasonic welding which poses the problems identified above.
  • the dimensions of the member depend solely on the diameter of the conductor which is crimped therein. Therefore, a conductor diameter, generally chosen from a range of standardized values, corresponds to a particular component. It is therefore also possible to identify standard ranges for the organ, which helps to make the organ simple to use.
  • the open barrel terminal is connected to the member in a sealed manner.
  • the tube has a cross section with a "U" profile in the section.
  • the electrical connection member is in one piece.
  • the electrical connection member is thus simple to manufacture.
  • the tube is continuous.
  • the sealing imparted by the tube and its mechanical characteristics are improved, for example with respect to a tube which would be formed by winding a strip.
  • the connecting surface of the ends of the strip would form both a area in which air or water could infiltrate and an area of concentration of mechanical stresses.
  • the tube comprises a copper alloy.
  • an internal surface of the annular-shaped end is coated with an anti-corrosion agent.
  • This provides protection against oxidation of the first conductor in the event of deterioration of the tightness of the connection.
  • the section is located at one end of the tube.
  • the electrical connection member thus makes it possible to connect an electrical conductor with a closed barrel terminal.
  • the tube has two ends of annular shape.
  • the electrical connection member makes it possible to connect two electrical conductors and an open barrel terminal between them. In other words, a three-branch junction is produced, which makes it possible to produce bundles of cables with a complex structure.
  • the electrical wiring element is coated with a sealing sheath.
  • the sealing sheath is made from a heat-shrinkable polymer.
  • the sheath compresses the conductor, which contributes to improving the tightness of the connection between the conductor and the electrical connection member.
  • a bundle of cables is also provided which comprises at least one cable as defined in the above.
  • a sealed connection is thus made between the first and second electrical wiring elements by means of a simple process suitable for mass production.
  • the second wiring element is formed by an open barrel terminal or by an open barrel splice.
  • FIG 1 We illustrated in figure 1 an electrical connection member 2 belonging to an electrical cable according to a first embodiment of the invention.
  • This member 2 which forms a junction tube is intended to connect two electrical wiring elements.
  • the member 2 comprises an elongated tube 4 having a general circular cross section and a main axis 6 shown in FIG. figure 1 . It is a continuous tube and not a strip wound to form a tube, which improves the sealing and mechanical characteristics of the tube 4.
  • the tube 4 has at least one end or free end section of annular shape 8 giving access to an internal housing of the tube 4.
  • the end section 8 has a cross section of generally circular shape, but it can be provided that this cross section is for example oval, rectangular, square or of any other shape.
  • the tube 4 also has at least one deformed section 10 in which the section of the tube 4 is deformed so that it consists of several portions contiguous to one another or to each other.
  • the internal volume of the tube 4 in the end section 8 is greater than the internal volume of the tube 4 in the deformed section 10.
  • the tube 4 has in the deformed section 10 a cross section with a cross section. "U”, but it can be provided that the profile has the shape of any one of the profiles illustrated in figure 9 , which include "V", “O”, semi-circle, square, "W”, spiral, "Y”, "H”, "X”, "U” profiles thin and "U” shaped with folded arms.
  • the deformed section 10 is present on the member 2 before it is crimped.
  • the deformed section 10 is located at a free end of the tube 4.
  • the shape of the deformed section 10 is obtained by locally crushing the tube 4 on itself in a direction perpendicular to its main axis 6 and in giving the crushed part a "U" profile. It will be seen below that the shapes of the end 8 and of the deformed section 10 are of interest for the use which is made of the member 2.
  • the tube 4 also has a transition section 11 connecting the end section 8 and the deformed section 10 so that an external surface of the tube 4 does not have a projecting angle.
  • the tube 4 consists of the end section 8, the transition section 11 and the deformed section 10.
  • the electrical connection member 2 is in one piece.
  • the electrical connection member 2 is metallic.
  • the tube 4 here comprises an alloy, for example a copper alloy such as the Cu-DHP alloy or the Cu-ETP alloy, respectively marketed under the names “Wieland-K19” and “Wieland-K32” by the company Wieland. In this way, the mechanical properties and resistance to oxidation of the member 2 are known and mastered. We can thus assess the lifespan of organ 2.
  • the electrical connection member 2 is intended to electrically connect two electrical wiring elements.
  • an electrical conductor 12 is crimped in the annular end 8 of the tube 4.
  • This electrical conductor 12 comprises several strands 14 here made of aluminum. However, provision can be made for these strands 14 to be made from another electrically conductive material, such as copper for example.
  • the crimping of the electrical conductor 12 in the electrical connection member 2 is carried out as follows: the electrical conductor 12 is inserted into the tube 4 through the free end 8 so that the electrical conductor 12 reaches a crimping zone 17 of the member 2, then the tube 4 is compressed on itself in its crimping zone 17 in a direction perpendicular to the main axis 6 of the tube 4. This compression makes it possible to make a sealed electrical connection between the electrical conductor 12 and the member 2.
  • the crimping zone 17 forms part of the end section 8.
  • the strands 14 are coated with a sealing sheath 16 made of a heat-shrinkable material, for example a polyolefin sheath marketed under the name “PM4-A” by the company ACLP or a sheath marketed under the name “Atum” by the company Raychem.
  • a sealing sheath 16 made of a heat-shrinkable material, for example a polyolefin sheath marketed under the name “PM4-A” by the company ACLP or a sheath marketed under the name “Atum” by the company Raychem.
  • the combination of the annular shape of the end 8 of the tube 4 and of the sealing sheath 16 makes it possible to improve the sealing of the connection between the conductor 12 and the member 2. In fact, there is no in this way, there is no so-called “pumping” effect of humidity which can occur due to variations in pressure in the conductor 12, nor of rising humidity by capillarite in the conductor 12.
  • An open barrel terminal 18 is crimped onto the deformed section 10 of the tube 4, as can be seen more precisely on the figure 3 .
  • the terminal 18 comprises for example bronze or brass.
  • the terminal 18 comprises an orifice 20 allowing its attachment and a crimping barrel having two wings 22.
  • the wings 22 are crimped to the deformed section 10 of the tube 4.
  • the deformed section 10 is introduced between the wings 22 and these are folded down. last on this section 10, the free edge of the wings 22 being housed at the bottom of the deformed section 10.
  • the shape of the deformed section 10 of the tube 4 allows a crimping of which the rate of compaction is high enough to ensure the tightness of the tube. connection between terminal 18 and component 2.
  • the connection by the member 2 between the conductor 12 and the terminal 18 is made in particular airtight and watertight, more generally to any element capable of oxidizing the part of the conductor 12 housed in member 2.
  • the method generally makes it possible to obtain an immersion seal under a pressure of up to 3 bar, ie 3.10 5 Pa. It is understood that the presence of the anticorrosion agent on the internal surface of the section of free end 8 of member 2 is optional. It would be used in particular in the event of rupture of the seal, for example caused during an impact undergone by the member 2.
  • the dimensions of the electrical connection member 2 depend on the diameter of the conductor 12 and do not depend on the properties of the terminal 18. It is therefore possible to make a model of electrical connection member 2 correspond to a very precise diameter of the conductor 12. In other words, it is possible to standardize the dimensions of the member 2. Furthermore, the properties of the terminal 18 are independent because the conductor 12 comprises copper or aluminum.
  • FIG 5 We illustrated in figure 5 an electrical connection member 2 'belonging to an electrical cable according to a second embodiment of the invention.
  • This member 2 ' which also forms a junction tube differs from that of the first embodiment in that it comprises a tube 4 having two free ends 8 of annular shape.
  • the deformed section 10 is located between these two free ends 8 and this time forms a middle section.
  • the member 2 ′ of this second embodiment allows the crimping of two electrical conductors 12 each of free ends of annular shape 8 and of an open barrel terminal 18 on the section 10.
  • the electric cable obtained following the connection of the two electrical conductors 12 and of the open barrel terminal 18 is illustrated in the figures 6 to 8 . It is observed that the member 2 'makes it possible to produce bundles of cables of complex shape.
  • the electrical connection member can be made from any material having satisfactory electrical and mechanical properties to allow the transmission of electric current and to give it a sufficiently long service life.
  • the open barrel terminal can be replaced by any type of terminal which can be crimped onto the deformed section of the tube of the electrical connection member, for example a suitably shaped copper tube.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Cable Accessories (AREA)

Claims (12)

  1. Elektrisches Kabel, umfassend:
    - ein elektrisches Kabelelement (12) und
    - ein elektrisches Verbindungselement (2; 2'), das mit das elektrische Kabelelement (12) in abdichtender Weise verpresst ist und geeignet ist, das elektrische Kabelelement (12) mit einem anderen elektrischen Kabelelement (18) zu verbinden, wobei das elektrische Verbindungselement (2; 2') ein Rohr (4) umfasst, das mindestens ein Ende in ringförmiger Ausbildung (8), das Zugang zu einem inneren Aufnahmeraum des Rohr (4) gibt, und mindestens einen Abschnitt (10) aufweist, bei dem ein Querschnitt des Rohrs (4) so verformt ist, dass er mehrere aneinander oder übereinander liegende Bereiche umfasst, wobei das andere elektrische Kabelelement ein Steckverbinder (18) mit offener Crimphülse ist,
    dadurch gekennzeichnet, dass auf den Abschnitt (10) der Steckverbinder (8) mit offener Crimphülse, die zwei Schwingen (22) aufweist, aufgepresst ist, indem der Abschnitt (10) zwischen die zwei Schwingen (22) eingeführt wird und die zwei Schwingen (22) um den Abschnitt (10) umgeschlagen werden, wobei die freien Enden der Schwingen am Boden des Abschnitts (10) liegen.
  2. Kabel nach dem vorhergehenden Anspruch, bei dem der Steckverbinder (18) mit offener Crimphülse mit dem elektrischen Verbindungselement (2; 2') in abdichtender Weise verbunden ist.
  3. Kabel nach einem beliebigen der vorhergehenden Ansprüche, bei dem das Rohr (4) in dem Abschnitt (10) einen Querschnitt in U Profil aufweist.
  4. Kabel nach einem beliebigen der vorhergehenden Ansprüche, bei dem das elektrische Verbindungselement (2; 2') aus einem Stück besteht.
  5. Kabel nach einem beliebigen der vorhergehenden Ansprüche, bei dem das Rohr (4) durchgehend ist.
  6. Kabel nach einem beliebigen der vorhergehenden Ansprüche, bei dem das Rohr (4) eine Kupferlegierung enthält.
  7. Kabel nach einem beliebigen der vorhergehenden Ansprüche, bei dem eine Innenfläche des Endes in ringförmiger Ausgestaltung (8) mit einem Rostschutzmittel beschichtet ist.
  8. Kabel nach einem beliebigen der vorhergehenden Ansprüche, bei dem der Abschnitt (10) an einem Ende des Rohrs (4) liegt.
  9. Kabel nach einem beliebigen der Ansprüche 1 bis 7, bei dem das Rohr (4) zwei Enden in ringförmiger Ausgestaltung (8) aufweist.
  10. Kabel nach einem beliebigen der vorhergehenden Ansprüche, bei dem das elektrische Kabelelement (12) mit einem Dichtungsmantel beschichtet ist, der vorzugsweise aus einem wärmeschrumpfbaren Polymer hergestellt ist.
  11. Kabelbündel, das mindestens ein Kabel nach einem beliebigen der vorhergehenden Ansprüche umfasst.
  12. Verfahren zum elektrischen Verbinden eines ersten und zweiten elektrisches Kabelelements (12, 18) eines Kabels nach einem beliebigen der Ansprüche 1 bis 10, bei dem:
    - das erste elektrische Kabelelement (12) in ein Ende (8) eines Rohrs (4) eines elektrischen Verbindungselementes (2; 2') eingepresst wird, wobei dieses Ende (8) eine ringförmige Ausgestaltung aufweist, und
    - das zweite Kabelelement (12) auf einen Abschnitt (10) des Rohr (4) des elektrischen Verbindungselementes (2; 2') auf gepresst wird, wobei ein Querschnitt des Rohrs (4) in dem Abschnitt (10) derart verformt ist, dass er mehrere aneinander oder aufeinander liegende Bereiche umfasst.
EP16178906.0A 2015-07-13 2016-07-11 Elektrisches anschlussorgan für elemente eines elektrischen kabels Active EP3118932B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201630976T SI3118932T1 (sl) 2015-07-13 2016-07-11 Električni povezovalni element za elemente električnih kablov in postopek povezave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1556652A FR3039007B1 (fr) 2015-07-13 2015-07-13 Organe de connexion electrique pour elements de cablage electrique

Publications (2)

Publication Number Publication Date
EP3118932A1 EP3118932A1 (de) 2017-01-18
EP3118932B1 true EP3118932B1 (de) 2020-08-19

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EP16178906.0A Active EP3118932B1 (de) 2015-07-13 2016-07-11 Elektrisches anschlussorgan für elemente eines elektrischen kabels

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EP (1) EP3118932B1 (de)
ES (1) ES2821893T3 (de)
FR (1) FR3039007B1 (de)
SI (1) SI3118932T1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018110225B4 (de) * 2018-04-27 2020-03-12 Lisa Dräxlmaier GmbH Leitungsanordnung für ein Bordnetz eines Kraftfahrzeugs

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100003867A1 (en) * 2008-07-03 2010-01-07 Draexlmaier GmbH Connector for use with light-weight metal conductors

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2917244B1 (fr) * 2007-06-06 2012-12-21 Peugeot Citroen Automobiles Sa Cosse de connexion.
JP5176533B2 (ja) * 2007-12-19 2013-04-03 住友電装株式会社 電線の止水方法及び該止水方法で形成された止水部を有する電線
JP5606127B2 (ja) * 2010-04-01 2014-10-15 矢崎総業株式会社 圧着端子の電線に対する接続構造
JP5679212B2 (ja) * 2011-12-12 2015-03-04 株式会社オートネットワーク技術研究所 中継端子
JP5521124B1 (ja) * 2012-08-07 2014-06-11 古河電気工業株式会社 圧着端子、接続構造体、コネクタ、ワイヤハーネス、並びに圧着端子の製造方法、接続構造体の製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100003867A1 (en) * 2008-07-03 2010-01-07 Draexlmaier GmbH Connector for use with light-weight metal conductors

Also Published As

Publication number Publication date
ES2821893T3 (es) 2021-04-28
FR3039007A1 (fr) 2017-01-20
FR3039007B1 (fr) 2019-10-11
EP3118932A1 (de) 2017-01-18
SI3118932T1 (sl) 2020-12-31

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