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EP0488896B1 - Elektrischer Stecker mit doppelter Isolierung - Google Patents

Elektrischer Stecker mit doppelter Isolierung Download PDF

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Publication number
EP0488896B1
EP0488896B1 EP19910403226 EP91403226A EP0488896B1 EP 0488896 B1 EP0488896 B1 EP 0488896B1 EP 19910403226 EP19910403226 EP 19910403226 EP 91403226 A EP91403226 A EP 91403226A EP 0488896 B1 EP0488896 B1 EP 0488896B1
Authority
EP
European Patent Office
Prior art keywords
insert
shell
electrical plug
insulating
plug according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19910403226
Other languages
English (en)
French (fr)
Other versions
EP0488896A1 (de
Inventor
Daniel Dupays
Jean-Pierre Bastien
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.)
EURELECTRIC
Original Assignee
EURELECTRIC
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 EURELECTRIC filed Critical EURELECTRIC
Publication of EP0488896A1 publication Critical patent/EP0488896A1/de
Application granted granted Critical
Publication of EP0488896B1 publication Critical patent/EP0488896B1/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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/24—Assembling by moulding on contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • 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 present invention relates to an electrical plug for connecting two elements of an electrical cable with two pins each having a connection means, said pins being fitted in two housings provided in an insulating insert, and said plug being electrically insulated by an external overmolding.
  • the invention finds a particularly advantageous application in the general field of connectors, and in particular in that of bipolar and bipolar + earth plugs when a high degree of insulation is sought.
  • this type of known electrical plug has the disadvantage of an insufficient electrical insulation with respect in particular to flying strands which could escape from the connection drums and thus come into contact with the overmolding and even be flush with it. particularly long flying strands, which is not acceptable for safety reasons.
  • German patent application DE-A-3 807 309 proposes to provide the electrical plug of the preamble with an intermediate insulating shell covering the insert and intended to receive said external overmolding.
  • the insulating shell placed intermediate between the insert and the overmolding, prevents any flying strand, whatever its length, from coming into contact with the overmolding.
  • very long flying strands cannot, at worst, leave the plug only through the front part of the plug, i.e. on the side of the pins, a location which is not accessible when the electrical plug is connected.
  • the placement of the shell on the insert requires that one end of the cable be introduced through a hole in the shell, which can only be done manually. , excluding any possibility of automatic assembly of the assembly.
  • Document DE-B-1 020 078 teaches an electrical plug which includes a shell intended to be placed on an insert carrying the pins connected to the cable.
  • This shell has two lateral openings which, when the shell is positioned on the insert, allows the flying strands to exit so that they can then come into contact with the overmolding and present a danger when the plug is connected.
  • the lateral openings of the shell for introduction onto the electric cable, are closed in the upper part.
  • the shell is therefore placed on the insert in a single vertical movement, the upper wall of the lateral openings coming to bear on the cable so that it bends to pass through it.
  • the technical problem to be solved by the object of the present invention is to produce an electrical plug for connecting two elements of an electrical cable with two pins each having a connection means, said pins being fitted in two housings arranged in a insulating insert, and said plug comprising an intermediate insulating shell covering said insert and intended to receive an external overmolding of insulation, electrical plug which would allow very easy mechanization of the assembly of all the parts constituting it, and in particular which would allow the automatic installation of the insulating shell on the insert, without exerting any constraint on the cable, in particular without bending it.
  • the solution to the technical problem posed consists, according to the present invention, in that said shell comprises means for lateral introduction of the shell onto said cable constituted by a lateral groove open at its two ends so as to allow the establishment of the insulating shell on the insert in a lateral movement and then bring it in a vertical movement on said insert.
  • said lateral groove provides walls forming means for immobilizing the elements of the cable in the electrical plug.
  • the lateral groove performs a double function, that of passing the cable through the shell and that of retaining the elements of the cable.
  • said insulating shell includes lateral ribs for stiffening said overmolding.
  • this advantageous arrangement reduces the cost of the electrical plug object of the invention since the material constituting the shell, polypropylene for example, can be significantly cheaper (about 3 times) than that constituting the insulating insert (polyamide for example) .
  • Figure 1 is a perspective view of an insert and a shell of a bipolar electrical plug according to the invention.
  • FIG. 2 is a perspective view, in the direction of arrow F1, of the shell of FIG. 1.
  • FIG. 3 is a perspective view of the assembly formed by the insert and the shell of FIG. 1.
  • Figure 4 is a perspective view of the electrical plug of Figure 1 after overmolding.
  • Figure 5 is a sectional view of the insert of a bipolar electrical plug + earth according to the invention.
  • Figure 6 is a bottom view of the plug of Figure 5.
  • Figure 7 is a sectional view along line II-II of the sheet of Figure 5.
  • FIG. 1 shows, in perspective, an electrical plug of the bipolar type for connecting two elements 101, 102, the neutral and the phase for example of an electric cable 100, with two pins 201, 202 each having a connection means which, in the embodiment of Figure 1, is, without limitation, a barrel 211, 212 of connection intended to receive strands 111, 112 stripped of the element 101, 102 corresponding.
  • the fixing of said strands 111, 112 in the drums 211, 212, of connection is obtained, in the case of FIG. 1, by crimping through the slots 311, 312.
  • the pins 201, 202 which can be made of brass, are fitted by ultrasound, overmolding, or any other means, into two housings 301, 302 arranged in an insulating insert 300 made of molded polyamide for example.
  • the electrical plug comprises an insulating shell 400 intended to cover said insert 300 and to receive an overmolding 500, shown in FIG. 4, which makes it possible to ensure the external insulation of said plug.
  • the shell 400 thus placed in the intermediate position between the insert 300 and the isolation overmolding 500, provides maximum electrical insulation of the plug, in particular against the flying strands which could escape from the connection drums 211, 212.
  • the enveloping nature of the shell 400 has the advantage of forcing particularly long flying strands out of the plug on the side of the pins, in a place where, given overmolding, they do not present any danger when the plug is connected.
  • the insulating shell 400 has lateral ribs 401, 402 for stiffening the isolation overmolding, which makes it possible to reduce the cost price of the plug.
  • the material constituting the shell polypropylene for example, being in fact less expensive than the polyamide of the insert in which said stiffening ribs are usually made.
  • Figure 1 also shows that the insulating insert 300 has a recess 320 limited by two side partitions 331, 332 and inside which are housed the elements 101, 102 of the cable 100 in their part between the cable and the drums. connection.
  • the insulating shell 400 has walls 421, 422 which bear against said lateral partitions 331, 332 when the shell is placed on the insert.
  • the walls 421, 422, acting as immobilization means form with the recess 320 retaining means in baffle with respect to the elements 101, 102.
  • This baffle system makes it possible to completely preserve the connections ensuring the immobilization of the elements during a brutal pull of the cable.
  • the shell 400 comprises means for lateral introduction of said shell onto said cable 100.
  • said lateral introduction means consist of a lateral groove formed by the two walls 421, 422 and one third wall 423.
  • the shell can then be put in place very easily, it suffices for this to present it on the cable in a lateral movement illustrated by the arrow F1 in FIG. 1, then to bring it, according to arrow F2, on insert 300 to its final position.
  • the lateral groove provides both the means for introducing the shell onto the cable and the walls of the immobilization means.
  • the insulating shell 400 is held in place using fixing means which are constituted by two fixing lugs 330 arranged on either side of the insert 300, one of said pins cooperating with a slot 410 which, as shown in Figure 2, is arranged in said shell on the wall 423 of the lateral groove.
  • fixing means which are constituted by two fixing lugs 330 arranged on either side of the insert 300, one of said pins cooperating with a slot 410 which, as shown in Figure 2, is arranged in said shell on the wall 423 of the lateral groove.
  • the introduction of said lug into the slot 410 is carried out by elastic deformation of the shell, the latter resuming its initial shape when the lug 330 is engaged in said slot.
  • the presence of two pins, only one of which is actually used, makes it possible to introduce the shell onto the insert in any direction, thereby increasing the ease of assembly of the plug.
  • Figures 5 and 6 show an alternative embodiment of the electrical plug described above with reference to Figures 1 to 4, for the connection of a cable 100 comprising, in addition to the phase and the neutral 101, 102, an element 103 for setting To the earth.
  • the insulating insert 300 also comprises a third housing 303 in which is disposed a means 350 of electrical contact in the form of a barrel, opening to the outside of the insert by a fixing means 360, a rivet for example, to a ground rail 600.
  • the strand 113 of the grounding element 103 is crimped into the barrel 350, through a light (not shown), equivalent to the lights 311, 312 of FIG. 1.
  • the insert 300 includes two separate recesses 321, 322 intended to house the elements 101 and 102 respectively.
  • the bottom view shown in Figure 6, shows the arrangement of the earth rail 600 with respect to the insert 300 and the overmolding 500 when the electrical plug is completely assembled.
  • the three elements 101, 102, 103, phase, neutral and earthed have an identical length so that during assembly, due to the sliding of the hull on the insert and blocking of the phase and neutral elements by said baffles, the grounding element 103 has an extra length, or soft strand, of safety, as illustrated in FIG. 7.
  • a brutal pull on the cable 100 induces the rupture of at least one of the phase or neutral elements before the earthing element.
  • the insulating insert 300 comprises introduction means, constituted by cones 341, 342, 343, making it possible to introduce the elements 101, 102, 103 of the cable 100 with respect respectively to the means 301, 302 for connection and to the means 350 for electrical contact.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Claims (12)

  1. Elektrischer Stecker zum Verbinden von zwei Elementen (101, 102) eines elektrischen Kabels (100) mit zwei Stiften (201, 202), die jeweils ein Verbindungsmittel (211, 212) aufweisen, wobei die Stifte in zwei Aufnahmen (301, 302) eingesteckt sind, die in einem Isoliereinsatz (300) angeordnet sind, und der Stecker einen den Einsatz (300) abdeckenden und zur Aufnahme eines äußeren Isoliergehäuses (500) bestimmten Isolierkörper (400) umfaßt, wobei der Isolierkörper (400) dazu dient, jede bewegliche Ader, ungeachtet ihrer Länge, daran zu hindern, mit dem äußeren Gehäuse (500) in Berührung zu kommen und sicherzustellen, daß zumindest die beweglichen Adern großer Länge aus dem Stecker an der Seite der Stifte an einer Stelle austreten, wo sie unter Berücksichtigung des Gehäuses keine Gefahr darstellen, wenn der Stecker angeschlossen ist, dadurch gekennzeichnet, daß der Körper seitliche Einfürmittel des Körpers (400) auf das Kabel (100) umfaßt, die aus einer seitlichen Nut (421, 422, 423) bestehen, welche an ihren beiden Enden offen ist, um eine Anordnung des Isolierkörpers (400) auf dem Einsatz (300) in einer seitlichen Bewegung zu ermöglichen und ihn anschließend in einer senkrechten Bewegung auf den Einsatz (300) hinzuführen.
  2. Elektrischer Stecker nach Anspruch 1, dadurch gekennzeichnet, daß der Isolierkörper (400) seitliche Rippen (401, 402) zur Versteifung des Gehäuses (500) umfaßt.
  3. Elektrischer Stecker nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Isoliereinsatz (300) mindestens eine Aussparung (320, 321, 322) umfaßt, die durch zwei Seitenwände (331, 332) begrenzt ist und daß im Innern desselben die Elemente (101, 102) des Kabels auf ihrem Abschnitt zwischen dem Kabel (100) und den Verbindungsmitteln (211, 212) angeordnet sind und daß der Isolierkörper (400) Haltemittel (421, 422) aufweist, die mit der Aussparung (320, 321, 322) Mittel für die zickzackförmige Halterung der genannten Elemente bilden.
  4. Elektrischer Stecker nach Anspruch 3, dadurch gekennzeichnet, daß die Haltemittel Wände (421, 422) sind, die an den Seitenwänden (331, 332) der Aussparung (320, 321, 322) anliegen, wenn der Körper (400) auf dem Einsatz (300) angeordnet ist.
  5. Elektrischer Stecker nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Isoliereinsatz (300) zwei Mittel (341, 342) zum Einführen der Kabelelemente in die Verbindungsmittel (211, 212) umfaßt.
  6. Elektrischer Stecker nach den Ansprüchen 3 und 4, dadurch gekennzeichnet, daß die seitliche Nut die Seitenwände (421, 422) aufweist, welche die Haltemittel bilden.
  7. Elektrischer Stecker nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Körper (400) auf dem Einsatz (300) mit Hilfe von einander zugeordneten und jeweils auf dem Körper bzw. auf dem Einsatz vorgesehenen Befestigungsmitteln (330, 410) gehalten ist.
  8. Elektrischer Stecker nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß die einander zugeordneten Befestigungsmittel aus mindestens einem Befestigungsnocken (330) bestehen, der auf dem Isoliereinsatz (300) angeordnet ist und mit einem Schlitzloch (410) zusammenwirkt, das in dem Körper (400) angeordnet ist.
  9. Elektrischer Stecker nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß, wenn das Kabel (100) ein drittes Erdungselement (103) aufweist, der Einsatz (300) ebenfalls in einer dritten Aufnahme (303) ein elektrisches Kontaktmittel (350) umfaßt, das an der Außenseite des Einsatzes (300) vorsteht und durch ein Befestigungsmittel (360) an einer Erdungsschiene (600) befestigt ist und mit dem das Erdungselement (103) verbunden ist.
  10. Elektrischer Stecker nach Anspruch 9, dadurch gekennzeichnet, daß der Isoliereinsatz (300) ein drittes Mittel (343) zum Einführen des Erdungselementes (103) in das elektrische Kontaktmittel (350) umfaßt.
  11. Elektrischer Stecker nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet, daß die Elemente (101, 102, 103) eine identische Länge haben, so daß das Erdungselement (103) bei der Montage eine Sicherheits-Überlänge bzw. eine bewegliche Sicherheitsader aufweist.
  12. Elektrischer Stecker nach einem der Ansprüche 1, 6, 7, 8, 10, 11, 12 und dem Anspruch 5, dadurch gekennzeichnet, daß die Einführmittel Einführkegel (341, 342, 343) sind.
EP19910403226 1990-11-29 1991-11-28 Elektrischer Stecker mit doppelter Isolierung Expired - Lifetime EP0488896B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014932 1990-11-29
FR9014932A FR2670056B1 (fr) 1990-11-29 1990-11-29 Fiche electrique a double isolation.

Publications (2)

Publication Number Publication Date
EP0488896A1 EP0488896A1 (de) 1992-06-03
EP0488896B1 true EP0488896B1 (de) 1996-07-03

Family

ID=9402717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910403226 Expired - Lifetime EP0488896B1 (de) 1990-11-29 1991-11-28 Elektrischer Stecker mit doppelter Isolierung

Country Status (4)

Country Link
EP (1) EP0488896B1 (de)
DE (1) DE69120641T2 (de)
ES (1) ES2090277T3 (de)
FR (1) FR2670056B1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020078B (de) * 1956-01-28 1957-11-28 Isoplast G M B H Elektrischer Stecker
DE2532872C3 (de) * 1975-07-23 1979-11-15 Kabelwerke Reinshagen Gmbh, 5600 Wuppertal Elektrische Steckvorrichtung und Verfahren zu ihrer Herstellung
DE3202747C3 (de) * 1982-01-28 1995-03-23 Krups Fa Robert Netzstecker
GB2140222B (en) * 1983-05-20 1986-06-25 Philips Electronic Associated Method of manufacturing a domestic moulded-on mains plug
DE3807309A1 (de) * 1988-03-05 1989-09-07 Taller Gmbh Zweipoliger schutzkontaktstecker (eurostecker)

Also Published As

Publication number Publication date
DE69120641D1 (de) 1996-08-08
FR2670056A1 (fr) 1992-06-05
EP0488896A1 (de) 1992-06-03
DE69120641T2 (de) 1997-02-06
ES2090277T3 (es) 1996-10-16
FR2670056B1 (fr) 1995-03-24

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