EP2709214B1 - Electrical connector with flame-resistant insert - Google Patents

Electrical connector with flame-resistant insert Download PDF

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Publication number
EP2709214B1
EP2709214B1 EP12184588.7A EP12184588A EP2709214B1 EP 2709214 B1 EP2709214 B1 EP 2709214B1 EP 12184588 A EP12184588 A EP 12184588A EP 2709214 B1 EP2709214 B1 EP 2709214B1
Authority
EP
European Patent Office
Prior art keywords
insert
electrical
insulator
protection element
connector
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
EP12184588.7A
Other languages
English (en)
French (fr)
Other versions
EP2709214A1 (de
Inventor
Thomas Pichot
Daniel Gloaguen
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.)
Souriau SAS
Original Assignee
Souriau 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 Souriau SAS filed Critical Souriau SAS
Priority to EP12184588.7A priority Critical patent/EP2709214B1/de
Publication of EP2709214A1 publication Critical patent/EP2709214A1/de
Application granted granted Critical
Publication of EP2709214B1 publication Critical patent/EP2709214B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • H01R13/527—Flameproof cases
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/426—Securing by a separate resilient retaining piece supported by base or case, e.g. collar or metal contact-retention clip
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00—Two poles

Definitions

  • the invention relates to an electrical connector equipped with an insert capable of withstanding at least partially the flame in order to avoid any short circuit between the electrical contacts located inside the insert.
  • the invention finds applications in the field of connectivity and, in particular, in the fields of aeronautical connectivity, automotive connectors and in any other field using connectors in a motor environment.
  • Such an insert generally comprises a front portion and a rear portion, both made of a hard insulating material.
  • the front portion and the rear portion are contiguous with each other, usually by gluing, so as to prevent any separation of the assembly and to ensure electrical isolation of the electrical contacts.
  • One or more longitudinal cavities are formed through the two front and rear portions of the insert, each receiving an electrical contact. In other words, each cavity passes right through the front and rear portions of the insert and houses an electrical contact, male or female, itself intended to be connected to a complementary contact, respectively female or male.
  • the electrical connector comprises an insert 10 traversed by longitudinal cavities 20, two of which only are visible on the figure 1 .
  • This insert 10 has a front part 13 and a rear part 16.
  • the front part 13 comprises a front insulator 11 and a front sealing element 12.
  • the rear part 16 comprises a rear insulator 15 and a front element.
  • rear sealing 14 The sealing elements 12 and 14 seal inside the longitudinal cavities 20.
  • the sealing elements and the front and rear insulators are made in the form of plates contiguous to each other to form different layers of the insert 10. Each of these pads has an outline whose shape is adapted to the outer shape of the connector.
  • the front insulation 11 and the rear insulation 15 are made of identical materials, thermoplastic type.
  • Thermoplastic is a hard material that has the property of softening repeatedly as soon as it is heated above a certain temperature and which, below this temperature, becomes hard again. This material has the advantage of being easy to implement and particularly easy to mold.
  • thermoplastic has the advantage of being reversible since its material can be remelted and reformed several times in a row. It can be easily recycled, making it a good environmental material.
  • Thermoplastic has, moreover, the advantage of being electrically insulating, hence its interest for the realization of connector inserts. Its insulating nature provides electrical protection of the electrical contacts housed in the cavities of the insert. In addition, at an ambient temperature below its melting temperature, the thermoplastic is sufficiently hard to provide mechanical protection for these electrical contacts, that is to say to ensure a minimum distance between the contacts of the connector, thus avoiding any electrical short circuit between said contacts.
  • thermoplastic inserts with thermoplastic insert can hardly be used in environments at risk of flame, such as motor environments, especially when the size of the connector is small and that the number of contacts is important, which has the effect of reducing the distances between two adjacent contacts.
  • thermoset involves a polymerization that is irreversible and thus leads to a solid and rigid finished product. This material, perfect electrical insulator, provides electrical and mechanical protection of electrical contacts.
  • thermoset has the advantage of being a fireproof material, that is to say a material insensitive to the flame. Indeed, its polymerization being irreversible, a thermoset element does not soften even when it is subjected to its initial melting temperature.
  • a connector insert subjected to a standard flame that is to say a temperature and a standardized size, retains its electrical properties for a period of at least five minutes.
  • thermoset insert will retain all of these electrical properties for at least five minutes and will withstand any internal short circuit for at least eighteen minutes. In some environments, such as motor environments, it is important that the connector can be out of flame to avoid any short circuit in the connector.
  • thermoset has the advantage of being a fireproof material, capable of preventing a standardized flame from crossing the connector, it has the disadvantage, because of its irreversibility, not to be transformable and therefore recyclable .
  • the current trend is to protect the environment, in particular by recycling as much as possible the materials used in the technical fields.
  • the thermoset material being non-recyclable, it is contrary to this trend of environmental protection.
  • the invention proposes an electrical connector equipped with an insert having good properties. and have a firewall function limiting any risk of internal short circuit.
  • the connector of the invention comprises a thermoplastic insert provided with a protective element made of a material insensitive to the flame, which can maintain a minimum distance between the electrical contacts, even at high temperature, to avoid any short circuit.
  • the insert comprises a protective element placed between the front insulation and the rear insulation whose thickness is substantially identical to the thickness of the front insulation and having a wafer shape with an outline of dimensions substantially identical to the outer dimensions of the front and rear parts of the insert, this protection element being made of a material insensitive to the flame, able to maintain, under the effect of a high temperature, a predefined distance between the electrical contacts, said protection element is attached to the front insulation of the front part and to the rear insulation of the rear part of the insert to form a single element.
  • This protection element has the advantage of not being deformed under the effect of a high temperature, which makes it possible to avoid any short circuit between electrical contacts of the insert.
  • the invention relates to an electrical connector whose insert is able to resist at least partially to the flame or at a high ambient temperature.
  • This electrical connector has, in addition, good environmental properties allowing it to be easily recyclable.
  • the connector of the invention comprises a two-part insert provided with a protective element made of a material insensitive to the flame.
  • a connector according to the invention is shown on the figure 2 .
  • This connector comprises an insert 10 traversed by longitudinal cavities 20 each adapted to house an electrical contact 30.
  • This insert 10 has a front portion 13 and a rear portion 16.
  • the front portion 13 comprises a front insulator 11 attached to a front sealing element 12.
  • the front insulation 11 is made of a thermoplastic material.
  • the rear portion 16 comprises a rear insulation 15, made of thermoplastic material, attached to a rear sealing element 14.
  • the insert 10 also comprises a protective element 18, intermediate, placed between the front portion 13 and the rear portion 16.
  • This protective element is made of a material insensitive to the flame and heat insensitive to so that it does not deform or melt under the effect of a high ambient temperature.
  • high temperature is meant the temperature of a flame that exceeds the melting temperature of the thermoplastic material.
  • This protective element 18 has a wafer shape of dimensions adapted to the outer dimensions of the insert. In other words, it has a contour identical to the contour of the insulators before 11 and rear 15, with dimensions in length and width identical to the dimensions of said insulators.
  • the protective element 18 is placed between the front insulation 11 and the rear insulation 15. It is attached to each of these insulators 11 and 15 so as to form a single rigid element.
  • the protective element 18 may partially or completely constitute the front insulation 11 or the rear insulation 15.
  • the insert 10 is traversed throughout, over its entire length, by longitudinal cavities 20 intended to each receive an electrical contact 30.
  • Each longitudinal cavity 20 has a shape adapted to the electrical contact that it receives.
  • a cavity 20 has a housing for receiving the electrical contact 30.
  • the protective element 18 has a thickness adapted to the contour of this zone of the cavity 20 surrounding the electrical contact 30.
  • the protection element 18 has a thickness substantially identical to the thickness of the front insulation 11.
  • the protective element 18 is made of a material which has not only the particularity of being insensitive to the flame, but also electrically insulating.
  • This protective element may be a ceramic. Indeed, ceramics have the property of having high mechanical strength, low density, high hardness and high wear resistance. Ceramics have, in addition, the advantage of being electrically insulating materials. Therefore, a ceramic intermediate element is able to ensure a good insulation of the electrical contacts and a mechanical protection of these electrical contacts.
  • the protective member 18 is provided with orifices. More precisely, it has as many orifices as there are longitudinal cavities passing through the insert.
  • the orifices of this ceramic protection element have dimensions adapted to the dimension of the contour of the longitudinal cavities of the insert. In this way, the protection element can surround the connection area of the electrical contact 30, forming a protective enclosure around each electrical contact.
  • a connector according to the invention is inserted in the current trend of environmental protection, with recyclable thermoplastic insulators and with the minimum of non-recyclable materials.

Claims (4)

  1. Elektrischer Steckverbinder, aufweisend mindestens einen Einsatz (10), wobei der Einsatz umfasst:
    - einen vorderen Teil (13), aufweisend einen vorderen Isolator (11), der an einem vorderen Dichtungselement (12) anliegt, und einen hinteren Teil (16), der einen hinteren Isolator (15) aufweist, der an einem hinteren Dichtungselement (14) anliegt, wobei der vordere Teil und der hintere Teil mindestens teilweise aus thermoplastischem Material sind, wobei die Dichtungselemente und der vordere und hintere Isolator in Form von Platten ausgebildet sind, und
    - eine Vielzahl von Hohlräumen (20), welche den vorderen Teil und den hinteren Teil des Einsatzes von einer Seite zur anderen durchqueren, wobei jeder Hohlraum imstande ist, einen elektrischen Kontakt (30) zu empfangen,
    dadurch gekennzeichnet, dass der Einsatz (10) ein Schutzelement (18) aufweist, das zwischen dem vorderen Isolator (11) und dem hinteren Isolator (15) platziert ist, dessen Stärke etwa der Stärke des vorderen Isolators (11) entspricht und eine Plattenform mit einer Kontur mit Abmessungen hat, die mit den Außenabmessungen des vorderen (13) und hinteren (16) Teils des Einsatzes etwa identisch sind, wobei dieses Schutzelement (18) aus einem flammenunempfindlichen Material hergestellt ist, das imstande ist, unter der Wirkung einer erhöhten Temperatur einen vorbestimmten Abstand zwischen den elektrischen Kontakten zu halten, wobei das Schutzelement am vorderen Isolator (11) des vorderen Teils (13) und am hinteren Isolator (15) des hinteren Teils (16) des Einsatzes anliegt, um ein und dasselbe Element zu bilden.
  2. Elektrischer Steckverbinder nach Anspruch 1, dadurch gekennzeichnet, dass das Schutzelement (18) aus Keramik ist.
  3. Elektrischer Steckverbinder nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass das Schutzelement (18) von einer Vielzahl von Öffnungen durchbohrt ist, deren Abmessungen den Außenabmessungen der Hohlräume des Einsatzes entsprechen.
  4. Elektrischer Steckverbinder nach Anspruch 3, dadurch gekennzeichnet, dass das Schutzelement (18) jeden Hohlraum (20) an der Stelle eines Bereichs umgibt, der den elektrischen Kontakt (30) enthält.
EP12184588.7A 2012-09-14 2012-09-14 Electrical connector with flame-resistant insert Active EP2709214B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12184588.7A EP2709214B1 (de) 2012-09-14 2012-09-14 Electrical connector with flame-resistant insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12184588.7A EP2709214B1 (de) 2012-09-14 2012-09-14 Electrical connector with flame-resistant insert

Publications (2)

Publication Number Publication Date
EP2709214A1 EP2709214A1 (de) 2014-03-19
EP2709214B1 true EP2709214B1 (de) 2018-11-07

Family

ID=50070200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12184588.7A Active EP2709214B1 (de) 2012-09-14 2012-09-14 Electrical connector with flame-resistant insert

Country Status (1)

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EP (1) EP2709214B1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4806395B2 (ja) * 2004-02-27 2011-11-02 グリーン， ツイード オブ デラウェア， インコーポレイテッド 密閉電気コネクター
DE102008045819B4 (de) * 2008-09-05 2015-09-03 Schott Ag Elektrische Durchführung, insbesondere für Sicherheitsbehälter
CN201570685U (zh) * 2009-12-23 2010-09-01 沈阳兴华航空电器有限责任公司 一种具有防火性能的电连接器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2709214A1 (de) 2014-03-19

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