EP0987796B1 - Shockproof plug - Google Patents

Shockproof plug Download PDF

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Publication number
EP0987796B1
EP0987796B1 EP99112753A EP99112753A EP0987796B1 EP 0987796 B1 EP0987796 B1 EP 0987796B1 EP 99112753 A EP99112753 A EP 99112753A EP 99112753 A EP99112753 A EP 99112753A EP 0987796 B1 EP0987796 B1 EP 0987796B1
Authority
EP
European Patent Office
Prior art keywords
plug
locking
pin
pins
spreading
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
EP99112753A
Other languages
German (de)
French (fr)
Other versions
EP0987796A3 (en
EP0987796A2 (en
Inventor
Dirk Hauck
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.)
Kalthoff GmbH
Original Assignee
Kalthoff GmbH
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 Kalthoff GmbH filed Critical Kalthoff GmbH
Publication of EP0987796A2 publication Critical patent/EP0987796A2/en
Publication of EP0987796A3 publication Critical patent/EP0987796A3/en
Application granted granted Critical
Publication of EP0987796B1 publication Critical patent/EP0987796B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/655Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth brace
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • H01R24/30Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable with additional earth or shield contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2103/00Two poles

Abstract

The plug (1) has a main body of insulating material and an inset flat metal element with a pair of projecting pins. Each pin extends beyond the underside, Contact caps fitted to each pin fit in slots and have a pair of spring contacts that engage behind edges of the socket bushes to lock the pins in place.

Description

Die Erfindung betrifft einen Erdungsstecker mit einem Erdungsbügel und/oder einem anderen Erdungsmittel und mit Stiften, die jeweils in eine Steckerstifteinführungsöffnung eines Steckdosenbodens einführbar sind, und mit einer Haube, bei dem mindestens ein Stift als Spreizkörper mit Spreizelementen ausgebildet ist und die Spreizelemente in eingestecktem Zustand des Erdungssteckers durch in der Haube geführte Verriegelungselemente verriegelbar sind und in verriegeltem Zustand mit Hinterschneidungsstufen hinter die Kanten der Steckerstifteinführungsöffnungen greifen.The invention relates to an earthing plug with an earthing clip and / or another Grounding means and with pins, each in a connector insertion opening of a socket bottom are insertable, and with a hood, in which at least one pin as an expansion body with expansion elements is formed and the spreading elements in the inserted state of the grounding plug in the hood guided locking elements are lockable and in the locked state with undercut steps reach behind the edges of the pin insertion openings.

Stecker und Erdungsstecker für Schutzkontaktsysteme sind normalerweise nicht verriegelbar.Plugs and earthing plugs for protective contact systems cannot normally be locked.

Für spezielle elektrische und/oder elektronische Geräte besteht die Forderung, daß der Stecker in eingestecktem Zustand verriegelbar sein muß. Die Verriegelung darf nur mit Hilfe eines Werkzeugs lösbar sein.For special electrical and / or electronic devices, there is a requirement that the plug in inserted state must be lockable. The lock may only be released with the aid of a tool his.

Bei Spezialanwendungen gibt es besondere Erdungsstecker. Im Telekommunikationsbereich, z.B. in Telefonanlagen nach EN60950 ist neben der Schutzleiterverbindung über die Netzversorgung eine ständige Erdverbindung vorgeschrieben, solange die Telefonanlage am Telefonnetz angeschlossen ist. Diese Erdverbindung darf nur mit einem Werkzeug oder einem ähnlichen Hlifsmittel lösbar sein. Eine an eine Verteilerdose angeschlossene Erdleitung ist aufwendig zu montieren und zu demontieren.There are special earthing plugs for special applications. In the telecommunications sector, e.g. In telephone systems in accordance with EN60950 there is a protective conductor connection via the mains supply permanent earth connection required as long as the telephone system is connected to the telephone network. This earth connection must only be detachable with a tool or a similar tool. One on A distribution box connected earth line is complex to assemble and disassemble.

Verriegelbare Stecker sind aus den Durckschriften GB 2 171 265 A und WO 93/22807 A1 bekannt. Eine Entriegelung ist jedoch leicht ohne Werkzeug möglich, so daß die genannten Vorschriften nicht erfüllt werden.Lockable plugs are known from the printed publications GB 2 171 265 A and WO 93/22807 A1. Unlocking is however easily possible without tools, so that the regulations mentioned not be met.

Ein gattungsgemäßer Stecker ist aus der GB 2 224 892 A bekannt. Auch dort läßt sich die Verriegelung durch Betätigung eines durch die Haube ragenden Hebels oder dergleichen aufheben, so daß der Stecker nicht die genannten Sicherheitsvorschriften erfüllt.A generic connector is known from GB 2 224 892 A. You can also lock it there by actuating a lever or the like protruding through the hood so that the Plug does not meet the safety regulations mentioned.

Aufgabe der Erfindung ist eine solche Ausbildung des Steckers bzw. Erdungssteckers, daß die Veriegelung nur mittels eines Werkzeugs aufgehoben werden kann.The object of the invention is such a design of the plug or grounding plug that the Locking can only be lifted using a tool.

Im Folgenden wird auf einen Erdungsstecker bezug genommen. Jedoch bezieht sich die Erfindung auch auf einen Stecker mit Phasenanschlüssen. In the following, reference is made to an earthing plug. However, the invention relates also on a plug with phase connections.

Die genannte Aufgabe wird nach der Erfindung dadurch gelöst, daß zwei Spreizkörper jeweils als Hohlstifte mit einem Kanal ausgebildet sind, daß die als Verriegelungsstifte ausgebildeten Verriegelungselemente jeweils in einen Kanal eines Hohlstifts einführbar sind, daß die Verriegelungsstifte an einem Riegelschieber sitzen, der in einem Schlitz der Haube verschiebbar ist, in eingeschobenem Zustand mit der Außenkontur der Haube bündig abschließt und eine Ausnehmung zum Ansetzen eines klingenartigen Werkzeugs aufweist, und daß in der Umfangswand jedes Hohlstiftes mindestens ein durch Axialschlitze freigehaltener Spreizsteg mit einer Hinterschneidungsstufe vorgesehen ist, der durch den in den Kanal eingeführten Verriegelungsstift gegen ein Ausweichen nach innen gesperrt ist..The above object is achieved according to the invention in that two expansion bodies each as Hollow pins are formed with a channel that the locking elements designed as locking pins are each insertable into a channel of a hollow pin that the locking pins on a Latch slide slide, which can be moved in a slot in the hood, in the inserted state with the outer contour of the hood is flush and a recess for attaching a blade-like Tool and that in the peripheral wall of each hollow pin at least one through axial slots free spreader bar is provided with an undercut level, through which in the channel inserted locking pin is locked against evasion inwards ..

Die Erfindung unterscheidet sich insofern vom Stand der Technik, als in eingestecktem Zustand des Erdungsstecker in die Steckdose die hinter die Kanten der Steckerstifteinführungsöffnungen greifenden Spreizelemente durch die an dem Riegelschieber sitzenden Verriegelungsstifte formschlüssig in Veriegelungsstellung gehalten werden. In den Riegelschieber kann man nur mit einem Werkzeug eingreifen und die Verriegelung lösen. Der Riegelschieber läßt sich von außen nicht mit den Fingern greifen und betätigen.The invention differs from the prior art in that it is in the inserted state of the grounding plug into the socket that reaches behind the edges of the plug insertion openings Spreading elements by the locking pins sitting on the locking slide in a positive manner in the locking position being held. You can only intervene in the bolt slide with one tool and release the lock. The bolt slide can not be gripped with your fingers and actuate.

Die Betätigung durch ein Werkzeug wird dadurch ermöglicht, daß zum Einführen eines klingenartigen Werkzeugs am Kopfteil des Schlitzes eine Rinne auf eine Ausnehmung des Riegelschiebers ausgerichtet ist.The operation by a tool is made possible by the fact that for inserting a blade-like Tool on the head part of the slot aligned a groove on a recess of the bolt slide is.

Eine feste und formschlüssige Verriegelung wird dadurch erzielt, daß das Innenprofil des Kanals von dem jeweiligen Verrieglungsstift vollständig ausgefüllt ist.A firm and positive locking is achieved in that the inner profile of the channel is completely filled in by the respective locking pin.

Ausführungsbeispiele werden anhand der Zeichnungen erläutert, in denen darstellen:

  • Fig. 1 eine Draufsicht auf ein erstes Ausführungsbeispiel eines Erdungssteckers,
  • Fig. 2 einen Halbschnitt nach der Linie A-A in Fig. 1,
  • Fig. 3 eine Unteransicht des Erdungssteckers,
  • Fig. 4 einen Schnitt nach der Linie C-C in Fig. 3,
  • Fig. 5 einen Schnitt nach der Linie B-B in Fig. 1,
  • Fig. 6 einen Schnitt nach der Linie D-D in Fig. 2 in vergrößertem Maßstab,
  • Fig. 7 eine perspktivische Draufsicht auf den Erdungsstecker,
  • Fig. 8 eine perspktivische Unteransicht des Erdungssteckers,
  • Fig. 9 eine Ansicht eines Sperriegels innerhalb des Erdungssteckers,
  • Fig. 10 eine Draufsicht auf Fig. 9,
  • Fig. 11 einen Schnitt nach der Linie E-E in Fig. 10,
  • Fig. 12 eine Unteransicht der Fig. 9 und
  • Fig. 13 eine Einzelansicht X in vergrößertem Maßstab.
  • Exemplary embodiments are explained with reference to the drawings, in which:
  • 1 is a plan view of a first embodiment of an earthing plug,
  • 2 shows a half section along the line AA in FIG. 1,
  • 3 is a bottom view of the grounding plug,
  • 4 shows a section along the line CC in FIG. 3,
  • 5 shows a section along the line BB in Fig. 1,
  • 6 shows a section along the line DD in FIG. 2 on an enlarged scale,
  • 7 is a perspective top view of the grounding plug,
  • 8 is a perspective bottom view of the grounding plug,
  • 9 is a view of a locking bolt within the grounding plug,
  • 10 is a plan view of FIG. 9,
  • 11 shows a section along the line EE in FIG. 10,
  • Fig. 12 is a bottom view of Figs. 9 and
  • Fig. 13 is a single view X on an enlarged scale.
  • Der Erdungsstecker nach den Fig. 1 bis 8 ist ein Konturenstecker, insbesondere ein Schutzkontaktstecker 1 mit zwei entsprechend den Steckerstiften angeordneten stiftförmigen Spreizkörpern 2, mit Führungsnocken 3 und mit axialen Schlitzen 4 für eine nicht dargestellte Schutzkontaktfeder. Die Anordnung ist von einer Haube 5 umgeben. Die elektrischen Anschlußleitungen, in diesem Fall die Erdungsleitung sind ebenfalls nicht dargestellt. 1 to 8 is a contour plug, in particular a protective contact plug 1 with two pin-shaped expansion bodies 2 arranged according to the connector pins, with guide cams 3 and with axial slots 4 for a protective contact spring, not shown. The order is surrounded by a hood 5. The electrical connection lines, in this case the earthing line are also not shown.

    Die Spreizkörper 2 sind vorzugweise integral mit einer nicht dargestellten Stecketbrücke ausgebildet. Jeder Spreizkörper 2 ist als Hohlstift ausgebildet. Die Umfangswand 6 des Hohlstifts besitzt mehrere durch Längsschlitze 7 freigetrennte Spreizstege 8 mit je einer Hinterschnittstufe 9. Die Umfangswand 6 umschließt einen Kanal 10, in dem ein Verriegelungsstift 11 aaxial verschiebbar ist. Der Verriegelungsstift 11 füllt den Kanal 10 formschlüssig aus, wie dies insbesondere in Fig. 6 dargestellt ist, und hält die Spreizstege 8 in gespreiztem Zustand, so daß sie nicht in radialer Richtung nach innen ausweichen können und die Hinterschnittstufen 9 wirksam sind..The expansion body 2 are preferably integrally formed with a plug-in bridge, not shown. Each expansion body 2 is designed as a hollow pin. The peripheral wall 6 of the hollow pin has several spreading webs 8 separated by longitudinal slots 7, each with an undercut step 9. The peripheral wall 6 encloses a channel 10 in which a locking pin 11 is axially displaceable. The locking pin 11 fills the channel 10 in a form-fitting manner, as is shown in particular in FIG. 6, and holds it Spreader bars 8 in a spread state so that they cannot deflect inwards in the radial direction and the undercut levels 9 are effective ..

    Normalerweise sind zwei Spreizkörper 2 vorhanden, die den beiden Steckerstiften für die Phasenspannungen entsprechen. Zur Verriegelung der beiden Spreizkörper 2 sind zwei Verriegelungsstifte 11 an einem Riegelschieber 12 vorgesehen. Für den Riegelschieber 12 und die Verriegelungsstifte 11 sind innerhalb der Haube 5 ein Schlitz 13 und Kanäle 14 vorgesehen. Der Riegelschieber 12 hat kopfseitig eine Ausnehmung 15, auf die eine geneigte Rinne 16 der Haube 5 ausgerichtet ist. Der Riegelschieber 12 ist entsprechend der Haube 5 konturiert, so daß er in eingeschobenem Zustand gemäß Fig. 2 und 4 mit der Außenkontur der Haube 5 bündig abschließt und damit kein Anfassen möglich ist. Ein Herausziehen des Riegelschiebers 12 ist nur möglich, wenn man mit einem klingenartigen Werkzeug in die Ausnehmung 15 eingreift.There are normally two expansion bodies 2, which are the two connector pins for the phase voltages correspond. To lock the two expansion bodies 2, two locking pins 11 are on a locking slide 12 is provided. For the locking slide 12 and the locking pins 11 are inside the hood 5 a slot 13 and channels 14 are provided. The locking slide 12 has a head Recess 15, to which an inclined groove 16 of the hood 5 is aligned. The locking slide 12 is according to the hood 5 contoured so that it is in the inserted state according to FIGS. 2 and 4 with the The outer contour of the hood 5 is flush and therefore no touch is possible. Pulling out the Latch slide 12 is only possible if you insert a blade-like tool into the recess 15 intervenes.

    Fig. 5 zeigt schematisch den Napf 18 einer Steckdose mit einem Steckdosenboden 17, in dem zwei Steckerstifteinführungsöffnungen 19 für Steckerstifte bzw. Spreizkörper 2 vorgesehen sind. Zum Einstekken des Erdungssteckers 1 in die Steckdose werden die Verriegelungsstifte 11 an dem Riegelschieber 12 aus den Kanälen 10 der Hohlstifte herausgezogen. Damit können die Spreizstege 8 der Hohlstifte beim Durchtritt durch die Steckerstifteinführungsöffnungen nach innen ausweichen, so daß die Hohlstifte bzw. Spreizkörper 2 ungehindert durch die Steckerstifteinführungsöffnungen 19 gesteckt werden können. Nach vollständigem Einstecken werden der Riegelschieber 12 mit den Verriegelungsstiften 11 in Einsteckrichtung eingeschoben, so daß der Innenquerschnitt der Kanäle 10 durch die Verriegelungsstifte 11 völlig ausgefüllt ist. Die Spreizstege 8 werden somit radial nach außen gedrängt und können nicht mehr nach innen zurückweichen. Die Hinterschnittstufen 9 kommen jeweils mit den Rändern der Steckerstifteinführungsöffnungen 19 in Eingriff, so daß der Erdungsstecker verriegelt ist und nicht aus der Steckdose herausgezogen werden kann.Fig. 5 shows schematically the bowl 18 of a socket with a socket bottom 17, in which two Connector pin insertion openings 19 for connector pins or expansion body 2 are provided. For insertion of the grounding plug 1 into the socket, the locking pins 11 on the locking slide 12th pulled out of the channels 10 of the hollow pins. So that the expansion bars 8 of the hollow pins when Dodge passage through the connector pin insertion openings inwards so that the hollow pins or Expanding body 2 can be inserted through the connector pin insertion openings 19 unhindered. To complete insertion of the locking slide 12 with the locking pins 11 in the direction of insertion inserted so that the inner cross section of the channels 10 through the locking pins 11 completely is filled out. The spreading webs 8 are thus pushed radially outward and can no longer move back away inside. The undercut steps 9 each come with the edges of the pin insertion openings 19 engaged so that the grounding plug is locked and not pulled out of the socket can be.

    Erst nach Einführen eines klingenartigen Werkzeugs durch die Rinne 16 in die Ausnehmung 15, kann man den Riegelschieber 12 zurückziehen bzw. herausziehen, so daß die Spreizstege 8 beim Herausziehen des Erdungssteckers aus der Steckdose wieder nach innen ausweichen können.Only after inserting a blade-like tool through the groove 16 into the recess 15, you can pull the bolt slide 12 back or pull out, so that the spreading webs 8 when pulling out of the earthing plug can escape from the socket back inwards.

    Als Entriegelungselemente eignen sich neben klingenartigen Werkzeugen Schraubendreher, Haken, Zangen oder besondere Formteile.In addition to blade-like tools, screwdrivers, hooks, Pliers or special molded parts.

    Claims (3)

    1. Earthed plug having an earthing trip and/or having another earthing means and having pins (2) which can each be inserted into a plug pin insertion opening in a plug socket base, and having a shroud (5) in which at least one pin is formed as a spreading body (2) having spreading elements (8) and, when the earthed plug is in the inserted state, the spreading elements can be locked by means of locking elements (11) which are guided in the shroud and which spreading elements, in the locked state, have undercut steps which engage behind the edges of the plug pin insertion openings, characterized in that two spreading bodies (2) are in each case formed as hollow pins with a channel (10), in that the locking elements, which are in the form of locking pins (11), can each be inserted into a channel (10) in a hollow pin, in that the locking pins (11) are seated on a bolt slide (13) which can be moved in a slot (13) in the shroud (5), terminates flush with the external contour of the shroud in the inserted state and has a recess (15) for fitting a blade-like tool, and in that at least one spreading web (8) is provided in the circumferential wall (6) of each hollow pin, is kept free by means of axial slots (7), has an undercut step (9) and is prevented from being able to move inwards by means of the locking pin (11) which is inserted into the channel (10).
    2. Earthed plug according to Claim 1, characterized in that, in order to insert a blade-like tool, a groove (16) on the head part of the slot (13) is aligned with a recess (15) in the bolt slide (12).
    3. Earthed plug according to Claim 1 or 2, characterized in that the internal profile of the channel (10) is completely filled by the respective locking pin (11).
    EP99112753A 1998-08-25 1999-07-01 Shockproof plug Expired - Lifetime EP0987796B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19838489 1998-08-25
    DE19838489A DE19838489C1 (en) 1998-08-25 1998-08-25 Grounding plug

    Publications (3)

    Publication Number Publication Date
    EP0987796A2 EP0987796A2 (en) 2000-03-22
    EP0987796A3 EP0987796A3 (en) 2000-05-31
    EP0987796B1 true EP0987796B1 (en) 2001-11-14

    Family

    ID=7878591

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99112753A Expired - Lifetime EP0987796B1 (en) 1998-08-25 1999-07-01 Shockproof plug

    Country Status (3)

    Country Link
    EP (1) EP0987796B1 (en)
    AT (1) ATE208965T1 (en)
    DE (2) DE19838489C1 (en)

    Family Cites Families (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE478799C (en) * 1929-07-02 Christian Gauker Protection against falling out of plugs from the socket
    FR2233724A1 (en) * 1973-06-15 1975-01-10 Poulain Wilfrid Electrical plug pin - ease of access to connections by use of secondary pins
    GB8504224D0 (en) * 1985-02-19 1985-03-20 Stewart A Electrical connection
    GB2224892A (en) * 1988-09-05 1990-05-16 Martin Erdemir Sanford Electric plug with safety catch
    US5082450A (en) * 1990-11-05 1992-01-21 Warren Sr Charles C Safety plug with ground lock and prong locks
    US5194013A (en) * 1992-02-11 1993-03-16 Morris Propp Lock plug
    NL9200792A (en) * 1992-04-29 1993-11-16 Bernardus Ludgerus Lubertus Hy CONNECTING DEVICE CONTAINING A PLUG AND CONTRAST.
    US5249976A (en) * 1992-11-02 1993-10-05 Brock Roger D Electrical plug having locking means
    US5480318A (en) * 1994-09-30 1996-01-02 Garrison; Dale E. Childproof electrical plug

    Also Published As

    Publication number Publication date
    ATE208965T1 (en) 2001-11-15
    DE59900421D1 (en) 2001-12-20
    EP0987796A3 (en) 2000-05-31
    EP0987796A2 (en) 2000-03-22
    DE19838489C1 (en) 2000-03-09

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