EP0109969B1 - Electrical outlet with protection contact - Google Patents

Electrical outlet with protection contact Download PDF

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Publication number
EP0109969B1
EP0109969B1 EP82111008A EP82111008A EP0109969B1 EP 0109969 B1 EP0109969 B1 EP 0109969B1 EP 82111008 A EP82111008 A EP 82111008A EP 82111008 A EP82111008 A EP 82111008A EP 0109969 B1 EP0109969 B1 EP 0109969B1
Authority
EP
European Patent Office
Prior art keywords
plug
safety
pole contact
pin
blocking
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
Application number
EP82111008A
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German (de)
French (fr)
Other versions
EP0109969A2 (en
EP0109969A3 (en
Inventor
Hans Arnhold
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.)
Heinrich Kopp GmbH and Co KG
Original Assignee
Heinrich Kopp GmbH and Co KG
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 Heinrich Kopp GmbH and Co KG filed Critical Heinrich Kopp GmbH and Co KG
Priority to EP82111008A priority Critical patent/EP0109969B1/en
Priority to AT82111008T priority patent/ATE36782T1/en
Priority to IT23922/83A priority patent/IT1194487B/en
Publication of EP0109969A2 publication Critical patent/EP0109969A2/en
Publication of EP0109969A3 publication Critical patent/EP0109969A3/en
Application granted granted Critical
Publication of EP0109969B1 publication Critical patent/EP0109969B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
    • 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
    • H01R13/44—Means for preventing access to live contacts

Definitions

  • the invention relates to the formation of the usual earthed sockets in flush-mounted, surface-mounted and (multiple) devices for the optional accommodation of two European flat plugs or a normal earthed plug.
  • the invention has for its object to take such a negligent user in a simple and safe way any way to be able to insert a plug type other than the intended type into this "extended" safety socket.
  • the invention supplements a known electrical protective contact socket according to the preamble of claim 1 by the characterizing features of claim 1. Thereafter, in order to prevent the inadmissible insertion of a three-pin flat plug, one each of the two spring legs of the pole contact socket parts is loosely sliding and thereby by Edge of the corresponding base recess provided locking slide made of insulating material.
  • the slides according to the invention generally cover only one of the three contact sockets on both sides and thus make it impossible, due to the blocking of the relevant insertion opening, to insert a three-pin flat plug into the plug device even when using force.
  • the two locking slides dodge an earthed plug to be inserted in the direction of an adjacent socket or the two European flat plugs inserted at the same time via the middle socket, so that these plug-in operations can be carried out perfectly.
  • these locking slides each consist of a small rectangular plastic part, which is either U-shaped and slidably engages over the spring legs of the respective pole contact socket part with its two web approaches, or in the case of a T-shaped design by means of its longitudinal web is slidably guided between these spring legs.
  • a locking slide in the first-mentioned form is more suitable for a socket version in which the pole contact part with the loosely placed slide is inserted from below or the rear into a regionally closed base part, whereas the other lock slide is located between the spring legs by means of its longitudinal web of the pole contact part is able to hold and only needs a limitation for its displacement due to the outer cover attached during installation.
  • the locking slides for the functional support of their evasive movement after the impact of a plug pin, both in the U-shape and in the T-shape of the slide on the surface of their respective crossbar, either with a roof-like shape in the sliding direction from a transverse diagonal to both Sloping sides, or beveled by means of semi-spherical indentations. Because of this, it is easy for the vertical pin of a safety plug or a European flat plug, the two locking slides independently of each other depending on the circumstances, e.g.
  • the functional assembly of the locking slides that they slide in the T-shaped configuration as with their longitudinal web between the spring legs of the pole contact socket parts, on the latter only by the edge of the existing base recesses in the course of the Assembly on the side of the outer cover can be held in a form-fitting manner against the inner wall of the insertion recess.
  • the locking slide on the pole contact socket parts may be due to the movable holder. for a further fastening measure e.g. by means of thermoplastic deformation or the like. to be dispensed with.
  • Another solution to the task is a construction in which the two locking slides are combined according to the known functional principle of a so-called child protection socket to form a flat or radially limited adjustable cover plate over the six plug-in sockets provided, this «lock plate» on the Base part or is movably mounted on the outer cover below the insertion recess and in turn has correspondingly arranged (trained) push-through openings to prevent the inadmissible use of a three-pin flat plug, without, however, denying the permissible insertion of a protective contact plug or two European flat plugs.
  • the invention makes it possible in an progressive manner to mass-produce an existing mass article in the form of protective contact sockets of all types and designs with very little effort in a production-related manner and without deviating from the dimensions specified for this purpose, and not only for the optional use of two Europe - to expand flat plugs instead of a normal safety plug, but at the same time to effectively and safely prevent the illegal use of a three-pin flat plug of another type.
  • FIG. 1 shows a typical embodiment of the invention in Fig. 1, the design of a flush-mounted protective contact socket for optionally receiving a protective contact plug or two European flat plugs with general blocking of the plug-in possibility for a three-pin flat plug is shown.
  • 2 shows a cross section through this socket and
  • FIG. 3 shows the different views of the locking slide used on both sides below the insertion openings.
  • the part 1 containing the three pole contact sockets is inserted as a strip-like structure into the rectangular recess 2 of the insulating base 3 (with a molded support ring and spreading fastening measures) and is taken by suitable precautions, such as hot pressing or the like, held and at one end for the line connection, for example with a screw connection 4 or the like to be operated from the front. is provided.
  • the locking slide 5 which loosely slides over only the two lower plug-in sockets of the pole contact socket part 1 according to its detailed illustration in FIG. 3 of the drawing is U-shaped and is exactly guided by the side edges of the base recess 2 during its displacement between two end stops.
  • this locking slide 5 can always evade in the direction of the adjacent free socket due to the use of one of the two plug-in sockets by a plug pin.
  • this movement is carried out downwards by the connector pins (or upwards without a stop) and when two European flat plugs are inserted, they are necessarily moved towards the center via the unused third socket.
  • the locking slide 5 according to the illustration in FIG. 3 has, for example, a roof-like bevel, which runs from a ridge diagonal to both sides and allows the locking slide 5 to dodge slightly in the predetermined direction due to the pressurization by a plug pin .
  • one of the three plug-in sockets of a pole contact socket part 1 always remains full, or the two sockets lying next to each other half, and thus also sufficiently blocked, so that for at least one of the plug pins of the three-pin flat plug, i.e. but overall, there is no possibility of even being able to be plugged into one of the two rows of sockets of the protective contact socket that are suitable for this purpose.
  • the longitudinal section shown in FIG. 2 through the protective contact socket shows how the locking slide 5 placed loosely within the recess 2 of the insulating material base 3 on the pole contact socket parts 1 in the course of the assembly after the attachment and screwing of the outer cover 6 by the in this exemplary embodiment
  • the edge of the recesses 2 can be held in a form-fitting manner in relation to the function of the inner wall of the existing insertion recess. No special explanation is required as to how this assembly process can be practically facilitated, or e.g. B. in the T-shaped design of the locking slide 5 or in their production-related inclusion in the common base part of multiple sockets does not require any particular manual skill.

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  • Connector Housings Or Holding Contact Members (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

1. Electrical safety socket of a concealed, surface-mounted or (multiple) appliance design for the selective insertion of two two-pin European-type flat plugs or a conventional safety plug, wherein the pole contact bush portions (1) are disposed in the region below the insert opening in the outer cover (6) inside the base portion (3) parallel to the centrally situated safety clamp and widen-out towards each end to enclose a respective additional bush for the accommodation of flat plug pins, characterised in that, to prevent the accidental insertion of a three-pin plug at right angles to the predetermined insert facility for the safety plug or for the two European-type flat plugs, a blocking slide (5) of insulating material is provided, which slides loosely over each of the two resilient arms of the pole contact bush portions (1) and is thereby guided by the rim of the corresponding base recess (2), the blocking slide being such that it is automatically deflected by the plug pins of a safety plug or of both European-type flat plugs, but effectively eliminates the possibility of a three-pin plug being inserted if such a plug is improperly inserted transversely into one of the two pole contact bush portions (1).

Description

Die Erfindung bezieht sich auf die Ausbildung der gebräuchlichen Schutzkontaktsteckdosen in Unterputz-, Aufputz- und Geräte(mehrfach-)ausführung zur wahlweisen Aufnahme von zwei Europa-Flachsteckern oder eines normalen Schutzkontaktsteckers.The invention relates to the formation of the usual earthed sockets in flush-mounted, surface-mounted and (multiple) devices for the optional accommodation of two European flat plugs or a normal earthed plug.

Zu diesem Zweck ist bereits nach der DE-A-2 915 816 vorgesehen worden, die innerhalb des Sockelteils der Schutzkontaktsteckdose angeordneten Polkontaktbuchsenteile im Bereich unter der Einsteckausnehmung der betreffenden Aussenabdeckung sowie parallel zu dem mittig gelegenen Schutzkontaktbügel nach beiden Seiten hin um je eine zusätzliche Steckbuchse für die Aufnahme der Flachsteckerstifte zu erweitern. Darüber hinaus bedarf es lediglich einer Abschrägung der vorhandenen Führungsstegpaare innerhalb der Einsteckausnehmung, um diese in sich der Aussenkontur der Flachstecker anzupassen.For this purpose, it has already been provided according to DE-A-2 915 816 that the pole contact socket parts arranged within the base part of the protective contact socket in the area under the insertion recess of the relevant outer cover and parallel to the central protective contact bracket on both sides by an additional socket for each to expand the inclusion of the flat plug pins. In addition, all that is required is a beveling of the existing guide web pairs within the insertion recess in order to adapt them to the outer contour of the flat plug.

Eine derartige Ausbildung erlaubt es jedoch aufgrund der jeweils zu dritt in Reihe nebeneinander gelegenen Einstecköffnungen, auf unsachgemässe Weise auch einen dreipoligen Flachstekker, wie ihn z.B. das italienische Installationssystem aufweist, quer zu dem für den Schutzkontaktstecker wie die beiden Europa-Flachstecker vorgesehenen Steckvorgang ohne besondere Anstrengung in die vorhandenen Buchsen einzuführen und damit gegebenenfalls eine Gefährdung des Benutzers zu ermöglichen.Such a design, however, also improperly allows a three-pole flat plug, as e.g. the Italian installation system has to insert into the existing sockets transversely to the plug-in operation provided for the protective contact plug like the two European flat plugs and thus possibly endanger the user.

Der Erfindung liegt die Aufgabe zugrunde, einem derart fahrlässigen Benutzer auf einfache und sichere Weise jedwede Möglichkeit zu nehmen, einen anderen als die dafür vorgesehenen Steckertypen in diese «erweiterte» Schutzkontaktsteckdose einstecken zu können.The invention has for its object to take such a negligent user in a simple and safe way any way to be able to insert a plug type other than the intended type into this "extended" safety socket.

Zur Lösung dieser Aufgabe ergänzt die Erfindung eine an sich bekannte elektrische Schutzkontaktsteckdose nach dem Oberbegriff des Patentanspruchs 1 durch die kennzeichnenden Merkmale des Anspruchs 1. Danach ist zur Verhinderung des unzulässigen Einsteckens eines dreipoligen Flachsteckers je ein die beiden Federschenkel der Polkontaktbuchsenteile lose übergleitender und dabei durch die Randung der entsprechenden Sockelausnehmung geführter Sperrschieber aus Isolierstoff vorgesehen. Dabei dekken die erfindungsgemässen Schieber auf beiden Seiten in der Regel immer nur eine der drei Kontaktbuchsen ab und machen es so durch die Sperrung der betreffenden Einstecköffnung unmöglich, selbst unter Anwendung von Gewalt einen dreipoligen Flachstecker in die Steckvorrichtung einführen zu können. Andererseits weichen die beiden Sperrschieber aber einem einzusteckenden Schutzkontaktstecker in Richtung einer benachbarten Buchse oder den gleichzeitig eingesteckten beiden Europa-Flachsteckern über die mittlere Buchse hin aus, so dass sich diese Einsteckvorgänge einwandfrei durchführen lassen.To achieve this object, the invention supplements a known electrical protective contact socket according to the preamble of claim 1 by the characterizing features of claim 1. Thereafter, in order to prevent the inadmissible insertion of a three-pin flat plug, one each of the two spring legs of the pole contact socket parts is loosely sliding and thereby by Edge of the corresponding base recess provided locking slide made of insulating material. The slides according to the invention generally cover only one of the three contact sockets on both sides and thus make it impossible, due to the blocking of the relevant insertion opening, to insert a three-pin flat plug into the plug device even when using force. On the other hand, the two locking slides dodge an earthed plug to be inserted in the direction of an adjacent socket or the two European flat plugs inserted at the same time via the middle socket, so that these plug-in operations can be carried out perfectly.

In zweckmässiger Ausgestaltung der Erfindung bestehen diese Sperrschieber jeweils aus einem kleinen rechteckigen Kunststoffteil, welches entweder U-förmig ausgebildet ist und dabei mit seinen beiden Stegansätzen nach unten hin die Federschenkel des betreffenden Polkontaktbuchsenteils gleitfähig übergreift, oder aber bei einer T-förmigen Ausbildung mittels seines Längssteges zwischen diesen Federschenkeln gleitfähig geführt wird. Demgemäss eignet sich ein Sperrschieber in der zuerst genannten Form eher für eine Steckdosenausführung, bei welcher der Polkontaktbuchsenteil mit dem lose aufgelegten Schieber von unten bzw. der Rückseite her in einen bereichsweise geschlossenen Sockelteil eingeführt wird, wogegen der andere Sperrschieber sich mittels seines Längssteges zwischen den Federschenkeln des Polkontaktbuchsenteils zu halten vermag und für sein Verschieben nur einer Begrenzung durch die bei der Installation aufgesetzte Aussenabdeckung bedarf.In an expedient embodiment of the invention, these locking slides each consist of a small rectangular plastic part, which is either U-shaped and slidably engages over the spring legs of the respective pole contact socket part with its two web approaches, or in the case of a T-shaped design by means of its longitudinal web is slidably guided between these spring legs. Accordingly, a locking slide in the first-mentioned form is more suitable for a socket version in which the pole contact part with the loosely placed slide is inserted from below or the rear into a regionally closed base part, whereas the other lock slide is located between the spring legs by means of its longitudinal web of the pole contact part is able to hold and only needs a limitation for its displacement due to the outer cover attached during installation.

Gemäss einer weiteren Ausgestaltung der Erfindung sind die Sperrschieber zur funktionellen Unterstützung ihrer Ausweichbewegung nach dem Auftreffen eines Steckerstiftes sowohl bei der U-Form wie bei der T-Form des Schiebers auf der Oberfläche ihres jeweiligen Quersteges entweder mit einer in Gleitrichtung von einer Querdiagonalen dachartig nach beiden Seiten hin abfallenden Schrägung versehen, oder mittels halbkalottenartiger Einbuchtungen abgeschrägt ausgeführt. Aufgrund dessen ist es für den senkrecht auftreffenden Steckerstift eines Schutzkontaktsteckers oder eines Europa-Flachsteckers ein leichtes, die beiden Sperrschieber unabhängig voneinander je nach Gegebenheit z.B. aus der Mittelstellung nach rechts oder links und zurück, bzw. auch nur - als für den beabsichtigten Sperrvorgang ausreichend - in einer Richtung hin- und zurückzuverstellen, wobei jedoch in jeder Phase für einen der Steckerstifte des dreipoligen Flachsteckers die für ihn infrage kommende Steckbuchse unter Einwirkung des benachbarten Steckerstiftes blockiert bleibt.According to a further embodiment of the invention, the locking slides for the functional support of their evasive movement after the impact of a plug pin, both in the U-shape and in the T-shape of the slide on the surface of their respective crossbar, either with a roof-like shape in the sliding direction from a transverse diagonal to both Sloping sides, or beveled by means of semi-spherical indentations. Because of this, it is easy for the vertical pin of a safety plug or a European flat plug, the two locking slides independently of each other depending on the circumstances, e.g. from the middle position to the right or left and back, or only - as sufficient for the intended locking process - back and forth in one direction, but in each phase for one of the plug pins of the three-pin flat connector, the socket in question is affected of the neighboring connector pin remains blocked.

Gemäss einer vorteilhaften Weiterbildung der Erfindung ist für die funktionsgerechte Montage der Sperrschieber vorgesehen, dass diese in der T-förmigen Ausgestaltung als mit ihrem Längssteg zwischen den Federschenkeln der Polkontaktbuchsenteile gleitend, auf denselben lediglich durch die an der Randung der für diese vorhandenen Sockelausnehmungen im Zuge der Montage von Seiten der Aussenabdeckung her formschlüssig zur Auflage gelangende Innenwandung der Einsteckausnehmung gehaltert werden. Hinzu kann bei dieser Ausführung aufgrund der beweglichen Halterung der Sperrschieber an den Polkontaktbuchsenteilen u.U. auf eine weitere Befestigungsmassnahme z.B. mittels thermoplastischer Verformung od.dgl. verzichtet werden.According to an advantageous development of the invention, it is provided for the functional assembly of the locking slides that they slide in the T-shaped configuration as with their longitudinal web between the spring legs of the pole contact socket parts, on the latter only by the edge of the existing base recesses in the course of the Assembly on the side of the outer cover can be held in a form-fitting manner against the inner wall of the insertion recess. In addition, in this version, the locking slide on the pole contact socket parts may be due to the movable holder. for a further fastening measure e.g. by means of thermoplastic deformation or the like. to be dispensed with.

Auf andere Weise ist es insbesondere bei Mehrfachsteckdosen mit einem gemeinsamen Sockelteil möglich, die lose auf die Polkontaktbuchsenleisten gelegten Sperrschieber in U-förmiger Ausgestaltung zusammen mit diesen Leistenteilen von der Rückseite her in den Sockelteil einzuschieben und sie dabei jeweils unterhalb der durchlöcherten Querstege eines auf mehrere Längsstege reduzierten Sockelteils über dem mittleren Buchsenpaar funktionsfähig im Verband des danach nur noch mit der Aussenabdeckung zu versehenden Einsatzteils zu haltern. Diese Anordnung hat gegenüber der erstgenannten den Vorteil, dass sich die Sperrschieber keinesfalls bei Anschluss und Montage von der bzw. den Schutzkontaktsteckdosen lösen können und dann nachlässigerweise nicht wieder eingesetzt werden.In another way, in particular with multiple sockets with a common base part, it is possible to insert the locking slides in a U-shaped configuration loosely placed on the pole contact socket strips together with these strip parts from the back into the base part, and in each case below the perforated crossbars one at a time Longitudinal bars of reduced base part above the middle pair of sockets functionally to hold in the association of the insert part that is then only to be provided with the outer cover. This arrangement has the advantage over the former that the locking slides can never detach from the protective contact socket or outlets during connection and assembly and are then carelessly reused.

Als weitere Möglichkeit bietet sich zur Lösung der Aufgabe ausserdem eine Konstruktion an, bei der die beiden Sperrschieber nach dem bekannten Funktionsprinzip einer sog. Kinderschutzsteckdose zu einer eben oder radial begrenzt verstellbaren Abdeckscheibe über den vorhandenen sechs Einsteckbuchsen zusammengefasst sind, wobei diese «Sperrscheibe» auf dem Sockelteil oder an der Aussenabdeckung unterhalb der Einsteckausnehmung bewegbar gelagert ist und ihrerseits über entsprechend angeordnete wie ausgebildete (Schub-)Durchstecköffnungen zur Verhinderung der unzulässigen Benutzung eines dreipoligen Flachsteckers verfügt, ohne dagegen das zulässige Einstecken eines Schutzkontaktsteckers oder zweier Europa-Flachstecker zu verwehren.Another solution to the task is a construction in which the two locking slides are combined according to the known functional principle of a so-called child protection socket to form a flat or radially limited adjustable cover plate over the six plug-in sockets provided, this «lock plate» on the Base part or is movably mounted on the outer cover below the insertion recess and in turn has correspondingly arranged (trained) push-through openings to prevent the inadmissible use of a three-pin flat plug, without, however, denying the permissible insertion of a protective contact plug or two European flat plugs.

Mit jeder dieser vorbeschriebenen Ausführungen ermöglicht es die Erfindung in fortschrittlicher Weise, einen bereits vorhandenen Massenartikel in Form von Schutzkontaktsteckdosen jeder Art und Ausführung mit sehr geringem Aufwand in fertigungstechnischer Beziehung und ohne Abweichung von den hierfür vorschriftsgemäss festgelegten Abmessungen nicht nur um die wahlweise Benutzung von zwei Europa-Flachsteckern anstelle eines normalen Schutzkontaktsteckers zu erweitern, sondern zur gleichen Zeit auch die unzulässige Benutzung eines dreipoligen Flachstekkers anderer Art wirksam und sicher zu verhindern.With each of the above-described designs, the invention makes it possible in an progressive manner to mass-produce an existing mass article in the form of protective contact sockets of all types and designs with very little effort in a production-related manner and without deviating from the dimensions specified for this purpose, and not only for the optional use of two Europe - to expand flat plugs instead of a normal safety plug, but at the same time to effectively and safely prevent the illegal use of a three-pin flat plug of another type.

In der Zeichnung ist als typisches Ausführungsbeispiel der Erfindung in Fig. 1 die Ausbildung einer Unterputz-Schutzkontaktsteckdose zur wahlweisen Aufnahme eines Schutzkontaktstekkers oder von zwei Europa-Flachsteckern bei genereller Sperrung der Einsteckmöglichkeit für einen dreipoligen Flachstecker dargestellt. Hierzu zeigt Fig. 2 einen Querschnitt durch diese Steckdose und Fig. 3 die verschiedenen Ansichten des auf beiden Seiten unterhalb der Einstecköffnungen eingesetzten Sperrschiebers.In the drawing, as a typical embodiment of the invention in Fig. 1, the design of a flush-mounted protective contact socket for optionally receiving a protective contact plug or two European flat plugs with general blocking of the plug-in possibility for a three-pin flat plug is shown. 2 shows a cross section through this socket and FIG. 3 shows the different views of the locking slide used on both sides below the insertion openings.

Aus der unabgedeckten Draufsicht der Schutzkontaktsteckdose im rechten Teil von Fig. 1 ist ersichtlich, dass der die drei Polkontaktbuchsen enthaltende Teil 1 als streifenförmig gefaltetes Gebilde in die rechteckige Ausnehmung 2 des Isolierstoffsockels 3 (mit angeformtem Tragring und Spreizbefestigungsmassnahmen) eingelegt und darin durch geeignete Vorkehrungen, wie Warmverpressung od. dgl., gehaltert sowie an seinem einen Ende für den Leitungsanschluss beispielsweise mit einem von vorn zu betätigenden Schraubanschluss 4 od.dgl. versehen ist. Der hier nur die beiden unteren Einsteckbuchsen des Polkontaktbuchsenteils 1 lose übergleitende Sperrschieber 5 ist gemäss seiner detaillierten Darstellung in Fig. 3 der Zeichnung U-förmig ausgebildet und wird bei seiner Verschiebung zwischen je zwei Endanschlägen durch die Seitenrandungen der Sockelausnehmung 2 exakt geführt. Demgemäss vermag dieser Sperrschieber 5 zufolge der Inanspruchnahme einer der beiden Einsteckbuchsen durch einen Steckerstift stets in Richtung der benachbarten freien Buchse auszuweichen. Beim Einstecken eines Schutzkontaktsteckers erfolgt diese Verschiebung durch die Steckerstifte nach unten (oder ohne Anschlag auch nach oben) hin und beim Einstecken zweier Europa-Flachstecker zwangsläufig zur Mitte hin über die unbenutzte dritte Buchse. Um den Verstellvorgang mechanisch zu unterstützen, verfügt der Sperrschieber 5 gemäss der Darstellung in Fig. 3 beispielsweise über eine dachartige Abschrägung, die von einer Firstdiagonalen nach beiden Seiten hin verläuft und den Sperrschieber 5 zufolge der Druckbeaufschlagung durch einen Steckerstift leicht in die vorgegebene Richtung ausweichen lässt. Dabei bleibt aber immer eine der drei Einsteckbuchsen eines Polkontaktbuchsenteils 1 voll bzw. die zwei nebeneinander liegenden Buchsen jeweils zur Hälfte, und damit ebenfalls hinreichend gesperrt, so dass für mindestens einen der Steckerstifte des dreipoligen Flachsteckers, d.h. aber insgesamt, keine Möglichkeit besteht, selbst mit Gewalt in eine der beiden sich dafür anordnungsgemäss anbietenden Buchsenreihen der Schutzkontaktsteckdose eingesteckt werden zu können.From the uncovered top view of the protective contact socket in the right part of FIG. 1 it can be seen that the part 1 containing the three pole contact sockets is inserted as a strip-like structure into the rectangular recess 2 of the insulating base 3 (with a molded support ring and spreading fastening measures) and is taken by suitable precautions, such as hot pressing or the like, held and at one end for the line connection, for example with a screw connection 4 or the like to be operated from the front. is provided. The locking slide 5 which loosely slides over only the two lower plug-in sockets of the pole contact socket part 1 according to its detailed illustration in FIG. 3 of the drawing is U-shaped and is exactly guided by the side edges of the base recess 2 during its displacement between two end stops. Accordingly, this locking slide 5 can always evade in the direction of the adjacent free socket due to the use of one of the two plug-in sockets by a plug pin. When a protective contact plug is inserted, this movement is carried out downwards by the connector pins (or upwards without a stop) and when two European flat plugs are inserted, they are necessarily moved towards the center via the unused third socket. In order to mechanically support the adjustment process, the locking slide 5 according to the illustration in FIG. 3 has, for example, a roof-like bevel, which runs from a ridge diagonal to both sides and allows the locking slide 5 to dodge slightly in the predetermined direction due to the pressurization by a plug pin . However, one of the three plug-in sockets of a pole contact socket part 1 always remains full, or the two sockets lying next to each other half, and thus also sufficiently blocked, so that for at least one of the plug pins of the three-pin flat plug, i.e. but overall, there is no possibility of even being able to be plugged into one of the two rows of sockets of the protective contact socket that are suitable for this purpose.

Der in Fig. 2 dargestellte Längsschnitt durch die Schutzkontaktsteckdose lässt erkennen, wie die in dieser beispielsgemässen Ausführung lose innerhalb der Ausnehmung 2 des Isolierstoffsockels 3 auf die Polkontaktbuchsenteile 1 aufgesetzten Sperrschieber 5 im Zuge der Montage nach dem Aufsetzen und Verschrauben der Aussenabdekkung 6 durch die an der Randung der Ausnehmungen 2 formschlüssig zur Auflage gelangende Innenwandung der vorhandenen Einsteckausnehmung funktionsgerecht gehaltert werden. Dabei bedarf es keiner besonderen Erläuterung, wie sich dieser Montagevorgang praktisch erleichtern lässt, oder z. B. bei der T-förmigen Ausbildung der Sperrschieber 5 bzw. bei deren fertigungsgemässer Einbeziehung in den gemeinsamen Sockelteil von Mehrfachsteckdosen überhaupt keine besondere Handfertigkeit voraussetzt.The longitudinal section shown in FIG. 2 through the protective contact socket shows how the locking slide 5 placed loosely within the recess 2 of the insulating material base 3 on the pole contact socket parts 1 in the course of the assembly after the attachment and screwing of the outer cover 6 by the in this exemplary embodiment The edge of the recesses 2 can be held in a form-fitting manner in relation to the function of the inner wall of the existing insertion recess. No special explanation is required as to how this assembly process can be practically facilitated, or e.g. B. in the T-shaped design of the locking slide 5 or in their production-related inclusion in the common base part of multiple sockets does not require any particular manual skill.

Claims (8)

1. Electrical safety socket of a concealed, surface-mounted or (multiple) appliance design for the selective insertion of two two-pin European-type flat plugs or a conventional safety plug, wherein the pole contact bush portions (1) are disposed in the region below the insert opening in the outer cover (6) inside the base portion (3) parallel to the centrally situated safety clamp and widen-out towards each end to enclose a respective additional bush for the accommodation of flat plug pins, characterised in that, to prevent the accidental insertion of a three-pin plug at right angles to the predetermined insert facility for the safety plug or for the two European-type flat plugs, a blocking slide (5) of insulating material is provided, which slides loosely over each of the two resilient arms of the pole contact bush portions (1) and is thereby guided by the rim of the corresponding base recess (2), the blocking slide being such that it is automatically deflected by the plug pins of a safety plug or of both European-type flat plugs, but effectively eliminates the possibility of a three-pin plug being inserted if such a plug is improperly inserted transversely into one of the two pole contact bush portions (1).
2. Safety socket according to claim 1, characterised in that the blocking slides (5) are formed from a U-shaped piece of plastics material which slidably engages with its two leg-type extension portions over the resilient arms of a pole contact bush portion (1).
3. Safety socket according to claim 1, characterised in that the blocking slides (5) are formed from a T-shaped piece of plastics material which is slidably guided between the resilient arms of a pole contact bush portion (1) by means of its longitudinal leg portion.
4. Safety socket according to claims 1 and 2 or 3, characterised in that, for the engagement of a plug pin in the sliding direction, the blocking slides (5) are provided on the surface of their crosspiece member with a sloping configuration which slopes down from a transverse diagonal towards both sides in a roof-like manner.
5. Safety socket according to claims 1, 2 or 3, characterised in that, for the engagement of a plug pin in the sliding direction, the blocking slides (5) are inclined on the surface of their crosspiece member towards both sides by means of hemispherical indentations.
6. Safety socket according to claims 1 to 5, characterised in that the blocking slides (5) are reliably retained on the pole contact bush portions (1) by means of the inner wall of the insert opening, which is supported on the rim of the base recess (2, 3) for said blocking slides during the assembly process from sides of the outer cover (6).
7. Safety socket according to claims 1 and 6, characterised in that the blocking slides (5) are each retained on the respective pole contact bush bars (1), which are inserted from the rear end into the common base portion (3) of multiple sockets, beneath respective perforate crosspiece members of this base portion (3) above the central pair of bushes.
8. Safety socket according to claim 1, characterised in that the two blocking slides (5) are combined to form a cover plate, which is adjustable to a limited extent in a planar or radial manner, above the six insert bushes (1) provided, the cover plate being displaceably mounted on the base portion (3) or on the outer cover (6) beneath the insert opening and being provided with suitably disposed or adapted (insert-type) through-apertures for blocking the use of a three-pin plug.
EP82111008A 1982-11-29 1982-11-29 Electrical outlet with protection contact Expired EP0109969B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP82111008A EP0109969B1 (en) 1982-11-29 1982-11-29 Electrical outlet with protection contact
AT82111008T ATE36782T1 (en) 1982-11-29 1982-11-29 ELECTRICAL PROTECTIVE SOCKET.
IT23922/83A IT1194487B (en) 1982-11-29 1983-11-28 ELECTRIC SOCKET WITH EARTH CONTACT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82111008A EP0109969B1 (en) 1982-11-29 1982-11-29 Electrical outlet with protection contact

Publications (3)

Publication Number Publication Date
EP0109969A2 EP0109969A2 (en) 1984-06-13
EP0109969A3 EP0109969A3 (en) 1986-07-02
EP0109969B1 true EP0109969B1 (en) 1988-08-24

Family

ID=8189364

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111008A Expired EP0109969B1 (en) 1982-11-29 1982-11-29 Electrical outlet with protection contact

Country Status (3)

Country Link
EP (1) EP0109969B1 (en)
AT (1) ATE36782T1 (en)
IT (1) IT1194487B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246404A1 (en) * 1982-12-15 1984-06-20 Brown, Boveri & Cie Ag, 6800 Mannheim MULTIPLE SOCKET FOR CONTACTING PROTECTIVE CONTACT PLUGS AND BIPOLAR CONNECTORS
DE3246423A1 (en) * 1982-12-15 1984-06-20 Brown, Boveri & Cie Ag, 6800 Mannheim MULTIPLE SOCKET WITH CONTACT GIVING, CLIP-ON COVER PLATE FOR PROTECTIVE CONTACT PLUG AND BIPOLAR CONNECTOR
GB2320983B (en) * 1996-04-27 2001-08-15 Board Tech Electric Co Ltd Electrical outlet device for connection with various types of plugs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1301448A (en) * 1961-07-08 1962-08-17 Expl Des Procedes Marechal D Improvements to electrical connection devices
DE2915816C2 (en) * 1979-04-19 1983-11-17 Heinrich Kopp Gmbh & Co Kg, 8756 Kahl Electrical protective contact socket
FR2518831B1 (en) * 1981-12-18 1988-10-14 Outillage Moule Etu Fabr MULTIPLE SOCKET PLUG, WITH INCORPORATED SAFETY ELEMENTS

Also Published As

Publication number Publication date
IT1194487B (en) 1988-09-22
IT8323922A0 (en) 1983-11-28
EP0109969A2 (en) 1984-06-13
EP0109969A3 (en) 1986-07-02
ATE36782T1 (en) 1988-09-15

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