EP3926762B1 - Protective contact socket - Google Patents

Protective contact socket Download PDF

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Publication number
EP3926762B1
EP3926762B1 EP21305476.0A EP21305476A EP3926762B1 EP 3926762 B1 EP3926762 B1 EP 3926762B1 EP 21305476 A EP21305476 A EP 21305476A EP 3926762 B1 EP3926762 B1 EP 3926762B1
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EP
European Patent Office
Prior art keywords
socket
contact
base
grounding
protective
Prior art date
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Application number
EP21305476.0A
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German (de)
French (fr)
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EP3926762A1 (en
Inventor
Wolfgang Görlich
Richard Vicktorius
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Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Publication of EP3926762A1 publication Critical patent/EP3926762A1/en
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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
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/76—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall
    • H01R24/78—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall with additional earth or shield contacts
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/652—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth pin, blade or socket
    • 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
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/655—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth brace
    • 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 a protective contact socket, comprising a base with electrical plug contacts, a grounding bracket attached to the base, which has a base and at least one grounding contact connected to the base, and a cover provided with a socket pot with at least one slot through which the grounding contact protrudes into the socket pot.
  • Protective contact sockets of the above type are known in many embodiments from the prior art.
  • the sockets are designed in such a way that when a plug is inserted, a connection is established with the ground contact before the contact pins of the plug establish an electrical connection with the electrical plug contacts that are connected to the supply network.
  • the grounding contact of the protective contact socket must assume a predetermined position with a very small tolerance. In known sockets, this should be achieved by the grounding contact pressing against a part of the grounding bracket with the outer wall of the socket pot when the cover is installed, so that the grounding contact assumes a predetermined position when the cover is installed.
  • the socket pot may be deformed during assembly of the socket if a fastening screw passed through the center of the bottom of the socket pot is tightened.
  • a fastening screw passed through the center of the bottom of the socket pot is tightened.
  • not only the floor but also the wall of the socket pot is deformed - even if only slightly - so that the desired target position of the grounding contact also changes.
  • this also changes the normatively prescribed distance between the grounding contacts.
  • sockets are increasingly equipped with electronic components that require space.
  • sockets in which, due to other components of the socket, there is very little space available outside the socket pot, so that the grounding contact can only be supported to a very limited extent on the outer jacket of the socket pot.
  • a socket according to the preamble of claim 1 is known.
  • the DE 10 08 805 B describes a protective contact socket with protective contact brackets that are attached to a cover on the socket.
  • An outer end of the grounding contact is arranged outside the socket pot, which makes it possible to support the grounding contact on the outer wall of the socket pot or on another component connected to the base, but away from the bottom of the socket pot. At the same time, this can prevent the grounding contact from being partially pulled out of the slot due to improper handling.
  • the ground contact has a crossbar at its outer end.
  • the outer end or the free end of the grounding contact can be fixed either to the cover or to the base or a component connected to the base against undesirable displacement, so that the above-mentioned effect does not occur.
  • this point - in contrast to the prior art - is not in the area of the bottom of the socket pot, but rather near the front visible surface of the socket, i.e. in an area that is tightened when tightened
  • the fastening screw for the cover is at most slightly deformed. In this way, a desired target position of the ground contact protruding through the slot into the socket pot and, if two ground contacts are present, compliance with a prescribed distance is easily ensured.
  • the base or a component firmly connected to the base forms at least one stop for the crossbar.
  • the base can have a wall or a web that is designed as a stop for the crossbar.
  • the stop blocks the crossbar in the direction of the plug-in direction of the socket. This prevents the grounding contact from being undesirably deformed if forces are exerted on it from above in the insertion direction, for example by improperly inserting a plug or during transport.
  • the crossbar and an area of the grounding contact adjacent to the crossbar can be T-shaped in plan view Form the end section, which is particularly flat. This creates a symmetrical arrangement that provides additional protection against the ground contact being bent out of the slot.
  • the stop can also be provided on a support ring which is firmly connected to the base and which is used in a known manner to mount the socket.
  • the stop can block the crossbar in a direction transverse to the insertion direction of the socket. In this way, it can be prevented that the grounding contact moves undesirably transversely to the insertion direction in the area of its front end, i.e. directed towards the front of the socket. If there are two grounding contacts, the stop limits movement of the two grounding contacts towards each other, so that a desired target distance can be maintained.
  • the grounding contact can be bent in the area of its front or outer end to form a loop, which enters the socket pot through the slot and exits it again through the slot. This also contributes to protection against bending of the ground contact.
  • this relates to a grounding bracket, in particular for a protective contact socket of the type described above, the grounding bracket having a base and at least one grounding contact connected to the base, which has a crossbar at its outer (free) end.
  • the grounding bracket can be designed as described above. It can be advantageous here if the ground contact is bent into a loop whose curvature has a turning point. This allows the crossbar to be oriented, for example, parallel to the bottom of the socket pot, so that a corresponding stop surface ensures that the crossbar rests with the lowest tolerances.
  • the grounding bracket can be a one-piece stamped and bent part with a strip-shaped base, which has a grounding contact at both ends, the outer end of which has a crossbar, and a fastening opening can be provided in particular in the middle of the base .
  • a grounding bracket can be produced inexpensively, which is particularly advantageous for a mass-produced item such as sockets.
  • Fig. 1 and 2 show a protective contact socket 10, which has a base 12 with two electrical contacts 14 (in Fig. 2 only one can be seen), which are connected to electrical connection terminals in a manner known per se.
  • a centrally arranged grounding bracket 15 is connected to the base 12 and has a base 16, at each of whose two outer ends a grounding contact 18 is provided in one piece. The grounding bracket is connected to a grounding terminal, not shown.
  • a viewing frame 20 is placed on the base 12 and is held by a cover 22 which is screwed to the base 12.
  • the cover 22 is provided in one piece in a manner known per se with a socket pot 24 into which a suitable protective contact plug can be inserted.
  • Two diametrically opposite slots 26 are provided in the peripheral wall of the socket pot 24 (in Fig. 1 only one is recognizable), a grounding contact 18 protruding into the socket pot 24 through each slot 26.
  • a support ring 28 is attached to the base 12, with which the base can be screwed into a hollow wall box, for example.
  • fastening claws 30 are provided with which the base can be clamped in a wall or box.
  • Fig. 3 shows a perspective view of a grounding bracket 15, as used in the embodiment of Fig. 1 and Fig. 2 can find application.
  • the base 16 of the grounding bracket 15 is strip-shaped and has a fastening opening 32 in its center, through which, for example, a rivet can be passed to fasten the grounding bracket to the base.
  • a grounding contact 18 is integrally formed on each of the two outer ends of the base 16 and is bent into a loop. However, the curvature of the loop has a turning point W and beyond the turning point W a crossbar 34 is formed at the outer end of each ground contact 18.
  • the crossbar 34 and an area adjacent thereto in the direction of the loop form a top view T-shaped end section 36, which is essentially planar and runs in a plane parallel to the base 16.
  • Fig. 5 to Fig. 7 show enlarged partial representations that illustrate how the grounding bracket 15 or the grounding contact 18 is arranged relative to the base 12.
  • the base 12 is provided with a wall section 38 which has an upwardly open U-shaped recess 40 through which the grounding contact 18 is passed.
  • the outside of the wall section 38 forms a stop for the crossbar 34, so that it is cannot move in a direction transverse to the insertion direction of the socket and in the direction of the opposite ground contact 18.
  • the crossbar 34 can be moved slightly in the insertion direction if a force K is exerted on the ground contact 18 in the insertion direction.
  • a web 42 is provided on the base 12, which serves as a stop for the cross web 34 when it is acted upon by a force K in the insertion direction.
  • FIG. 4 a slightly modified embodiment of a grounding bracket 15, in which a loop-shaped grounding contact 18 is formed at the two ends of the base 16.
  • a crossbar 34 is again provided at the outer or free end of the grounding contact 18. However, this does not extend parallel to the base 16, but perpendicular to it.
  • two curved tongues 46 are provided on the crossbar 34, which facilitate insertion of the grounding contact 18 into the slot 26 when the cover 22 is put on, which is in the peripheral wall of the socket pot 24 is provided.
  • the crossbar 34 forms a stop for the grounding contact 18, which is not located in the area of the bottom 25 of the socket pot 24. Rather, the crossbar 34 fixes the position of the grounding contact 18 in an area of the peripheral wall of the socket pot 24, which is close to the area of the entrance to the socket pot 24. This area deforms at most slightly when the base 25 is deformed by tightening a fastening screw.
  • Fig. 8 and Fig. 9 show a further embodiment of a protective contact socket, with the same reference numbers being used for the same components.
  • This shows Fig. 9 the ground contact 18 in a position in which it is when the plug is inserted, although the plug itself is not shown.
  • Fig. 9 clarified, when the plug is inserted, the ground contact 18 is not only pressed radially outwards through the slot, but also pressed downwards in the insertion direction until the crossbar 34 abuts the support frame 28. However, there is no part of the ground contact 18 below the support frame 28, so that this area can be used for stiffening components, electronic components or the like.
  • the cover 22 is designed in such a way that the area outside the socket pot is kept very small up to the edge of the cover.
  • the cover 22 - as in all embodiments - has a circular edge that extends parallel to the wall of the socket pot and extends into the interior of the socket. In this embodiment, there is only very little free space in the area between the peripheral edge without a socket pot.
  • the grounding contact 18 is led into the socket pot in the area of the bottom of the socket pot and is led out again in the area of the upper slot end of the socket pot, the grounding contact can also be used when the plug is inserted ( Fig. 11 ) find space and are supported at its free outer end by the crossbar 34 on the support frame 28.

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Description

Die vorliegende Erfindung betrifft eine Schutzkontaktsteckdose, umfassend einen Sockel mit elektrischen Steckkontakten, einen an dem Sockel befestigten Erdungsbügel, der eine Basis und zumindest einen mit der Basis verbundenen Erdungskontakt aufweist, sowie eine mit einem Steckdosentopf versehene Abdeckung mit zumindest einem Schlitz, durch welchen der Erdungskontakt in den Steckdosentopf hineinragt.The present invention relates to a protective contact socket, comprising a base with electrical plug contacts, a grounding bracket attached to the base, which has a base and at least one grounding contact connected to the base, and a cover provided with a socket pot with at least one slot through which the grounding contact protrudes into the socket pot.

Schutzkontaktsteckdosen der vorstehenden Art sind aus dem Stand der Technik in vielen Ausführungsformen bekannt. Hierbei sind die Steckdosen so ausgebildet, dass bei Einstecken eines Steckers eine Verbindung mit dem Erdungskontakt hergestellt wird, bevor die Kontaktstifte des Steckers eine elektrische Verbindung mit den elektrischen Steckkontakten herstellen, die mit dem Versorgungsnetz verbunden sind. Um diese Funktion ordnungsgemäß zu erfüllen, muss der Erdungskontakt der Schutzkontaktsteckdose mit einer sehr geringen Toleranz eine vorbestimmte Position einnehmen. Bei bekannten Steckdosen soll dies dadurch erreicht werden, dass der Erdungskontakt bei Montage der Abdeckung mit der äußeren Wandung des Steckdosentopfes gegen einen Teil des Erdungsbügels drückt, so dass der Erdungskontakt bei montierter Abdeckung eine vorbestimmte Position einnimmt.Protective contact sockets of the above type are known in many embodiments from the prior art. Here, the sockets are designed in such a way that when a plug is inserted, a connection is established with the ground contact before the contact pins of the plug establish an electrical connection with the electrical plug contacts that are connected to the supply network. In order to properly fulfill this function, the grounding contact of the protective contact socket must assume a predetermined position with a very small tolerance. In known sockets, this should be achieved by the grounding contact pressing against a part of the grounding bracket with the outer wall of the socket pot when the cover is installed, so that the grounding contact assumes a predetermined position when the cover is installed.

Es hat sich allerdings herausgestellt, dass der Steckdosentopf bei der Montage der Steckdose unter Umständen verformt wird, wenn eine durch die Mitte des Bodens des Steckdosentopfes durchgeführte Befestigungsschraube festgezogen wird. Als Folge davon deformiert sich nicht nur der Boden, sondern auch die Wand des Steckdosentopfes - wenn auch nur geringfügig -, so dass sich auch die gewünschte Sollposition des Erdungskontaktes verändert. Da üblicherweise zwei gegenüberliegende Erdungskontakte vorhanden sind, verändert sich hierdurch auch der normativ vorgeschriebene Abstand zwischen den Erdungskontakten.However, it has been found that the socket pot may be deformed during assembly of the socket if a fastening screw passed through the center of the bottom of the socket pot is tightened. As a result, not only the floor but also the wall of the socket pot is deformed - even if only slightly - so that the desired target position of the grounding contact also changes. There usually two If there are opposing grounding contacts, this also changes the normatively prescribed distance between the grounding contacts.

Ein weiteres Problem kann sich dadurch ergeben, dass Steckdosen zunehmend mit elektronischen Bauteilen ausgestattet sind, für die Platz benötigt wird. Auch gibt es Ausführungsformen von Steckdosen, bei denen aufgrund von anderen Bauteilen der Steckdose außerhalb des Steckdosentopfes nur sehr wenig Platz zur Verfügung steht, so dass sich der Erdungskontakt am Außenmantel des Steckdosentopfes nur sehr bedingt abstützen kann.Another problem can arise from the fact that sockets are increasingly equipped with electronic components that require space. There are also embodiments of sockets in which, due to other components of the socket, there is very little space available outside the socket pot, so that the grounding contact can only be supported to a very limited extent on the outer jacket of the socket pot.

Aus der FR 1 363 779 A ist eine Steckdose nach dem Oberbegriff des Anspruchs 1 bekannt. Die DE 10 08 805 B beschreibt eine Schutzkontaktsteckdose mit Schutzkontaktbügeln, die in einer Abdeckung der Steckdose befestigt sind.From the FR 1 363 779 A a socket according to the preamble of claim 1 is known. The DE 10 08 805 B describes a protective contact socket with protective contact brackets that are attached to a cover on the socket.

Es ist die Aufgabe der vorliegenden Erfindung, eine Schutzkontaktsteckdose der vorstehend beschriebenen Art derart zu verbessern, dass insbesondere bei beengten Platzverhältnissen auf einfache Weise eine gewünschte Sollposition des Erdungskontaktes nach Montage der Steckdose sichergestellt werden kann.It is the object of the present invention to improve a protective contact socket of the type described above in such a way that a desired target position of the grounding contact can be easily ensured after installation of the socket, particularly in confined spaces.

Die Lösung dieser Aufgabe erfolgt durch eine Schutzkontaktsteckdose mit den Merkmalen des Anspruchs 1.This problem is solved by a protective contact socket with the features of claim 1.

Ein äußeres Ende des Erdungskontaktes ist außerhalb des Steckdosentopfes angeordnet, wodurch die Möglichkeit besteht, den Erdungskontakt an der Außenwand des Steckdosentopfes oder an einem anderen mit dem Sockel verbundenen Bauteil jedoch entfernt vom Boden des Steckdosentopfes abzustützen. Gleichzeitig kann hierdurch verhindert werden, dass der Erdungskontakt durch unsachgemäße Behandlung mit seinem freien Ende teilweise aus dem Schlitz herausgezogen wird.An outer end of the grounding contact is arranged outside the socket pot, which makes it possible to support the grounding contact on the outer wall of the socket pot or on another component connected to the base, but away from the bottom of the socket pot. At the same time, this can prevent the grounding contact from being partially pulled out of the slot due to improper handling.

Der Erdungskontakt weist an seinem äußeren Ende einen Quersteg auf. Durch einen solchen Quersteg lässt sich das äußere Ende bzw. das freie Ende des Erdungskontaktes entweder an der Abdeckung oder aber an dem Sockel oder einem mit dem Sockel verbundenen Bauteil gegen eine ungewünschte Verschiebung fixieren, so dass der oben erwähnte Effekt nicht auftritt. Wird beispielsweise der Quersteg von der äußeren Wandung des Steckdosentopfes arretiert, so befindet sich diese Stelle - im Gegensatz zum Stand der Technik - nicht im Bereich des Bodens des Steckdosentopfes, sondern nahe der vorderen Sichtfläche der Steckdose, d.h. in einem Bereich, der sich beim Festziehen der Befestigungsschraube für die Abdeckung allenfalls geringfügig verformt. Auf diese Weise ist eine gewünschte Sollposition des durch den Schlitz in den Steckdosentopf ragenden Erdungskontaktes und bei Vorhandensein zweier Erdungskontakte die Einhaltung eines vorgeschriebenen Abstands auf einfache Weise sichergestellt.The ground contact has a crossbar at its outer end. With such a crossbar, the outer end or the free end of the grounding contact can be fixed either to the cover or to the base or a component connected to the base against undesirable displacement, so that the above-mentioned effect does not occur. For example, if the crossbar is locked by the outer wall of the socket pot, this point - in contrast to the prior art - is not in the area of the bottom of the socket pot, but rather near the front visible surface of the socket, i.e. in an area that is tightened when tightened The fastening screw for the cover is at most slightly deformed. In this way, a desired target position of the ground contact protruding through the slot into the socket pot and, if two ground contacts are present, compliance with a prescribed distance is easily ensured.

Der Sockel oder ein mit dem Sockel fest verbundenes Bauteil bildet zumindest einen Anschlag für den Quersteg. So kann der Sockel beispielsweise eine Wandung oder einen Steg aufweisen, die als Anschlag für den Quersteg ausgebildet sind.The base or a component firmly connected to the base forms at least one stop for the crossbar. For example, the base can have a wall or a web that is designed as a stop for the crossbar.

Der Anschlag blockiert den Quersteg in Richtung der Einsteckrichtung der Steckdose. Auf diese Weise wird verhindert, dass sich der Erdungskontakt unerwünscht deformiert, wenn auf diesen von oben in Einsteckrichtung Kräfte ausgeübt werden, beispielsweise durch unsachgemäßes Einstecken eines Steckers oder während des Transports.The stop blocks the crossbar in the direction of the plug-in direction of the socket. This prevents the grounding contact from being undesirably deformed if forces are exerted on it from above in the insertion direction, for example by improperly inserting a plug or during transport.

Vorteilhafte Ausführungsformen der Erfindung sind in der Beschreibung, der Zeichnung sowie den Unteransprüchen beschrieben.Advantageous embodiments of the invention are described in the description, the drawing and the subclaims.

Nach einer vorteilhaften Ausführungsform kann der Quersteg und ein an den Quersteg angrenzender Bereich des Erdungskontaktes einen in Draufsicht T-förmigen Endabschnitt bilden, der insbesondere flächig ausgebildet ist. Hierdurch ist eine symmetrische Anordnung gebildet, die einen zusätzlichen Schutz gegen ein Herausbiegen des Erdungskontaktes aus dem Schlitz bildet.According to an advantageous embodiment, the crossbar and an area of the grounding contact adjacent to the crossbar can be T-shaped in plan view Form the end section, which is particularly flat. This creates a symmetrical arrangement that provides additional protection against the ground contact being bent out of the slot.

Nach einer weiteren vorteilhaften Ausführungsform kann der Anschlag auch an einem Tragring vorgesehen sein, der mit dem Sockel fest verbunden ist und der auf bekannte Weise zur Montage der Steckdose dient.According to a further advantageous embodiment, the stop can also be provided on a support ring which is firmly connected to the base and which is used in a known manner to mount the socket.

Nach einer weiteren vorteilhaften Ausführungsform kann der Anschlag den Quersteg in einer Richtung quer zur Einsteckrichtung der Steckdose blockieren. Auf diese Weise kann verhindert werden, dass sich der Erdungskontakt im Bereich seines vorderen, d.h. zur Vorderseite der Steckdose gerichteten Endes unerwünscht quer zur Einsteckrichtung bewegt. Bei Vorhandensein von zwei Erdungskontakten wird somit durch den Anschlag eine Bewegung der beiden Erdungskontakte aufeinander zu begrenzt, so dass ein gewünschter Soll-Abstand eingehalten werden kann.According to a further advantageous embodiment, the stop can block the crossbar in a direction transverse to the insertion direction of the socket. In this way, it can be prevented that the grounding contact moves undesirably transversely to the insertion direction in the area of its front end, i.e. directed towards the front of the socket. If there are two grounding contacts, the stop limits movement of the two grounding contacts towards each other, so that a desired target distance can be maintained.

Nach einer weiteren vorteilhaften Ausführungsform kann der Erdungskontakt im Bereich seines vorderen bzw. äußeren Endes zu einer Schlaufe gebogen sein, die durch den Schlitz in den Steckdosentopf eintritt und durch den Schlitz wieder aus diesem austritt. Auch dies trägt zu einem Schutz gegen Verbiegen des Erdungskontaktes bei.According to a further advantageous embodiment, the grounding contact can be bent in the area of its front or outer end to form a loop, which enters the socket pot through the slot and exits it again through the slot. This also contributes to protection against bending of the ground contact.

Nach einem nicht beanspruchten weiteren Aspekt der vorliegenden Erfindung betrifft dieser einen Erdungsbügel, insbesondere für eine Schutzkontaktsteckdose der vorstehend beschriebenen Art, wobei der Erdungsbügel eine Basis und zumindest einen mit der Basis verbundenen Erdungskontakt aufweist, welcher an seinem äußeren (freien) Ende einen Quersteg aufweist. Der Erdungsbügel kann wie vorstehend beschrieben ausgebildet sein. Hierbei kann es vorteilhaft sein, wenn der Erdungskontakt zu einer Schlaufe gebogen ist, deren Krümmung einen Wendepunkt aufweist. Hierdurch lässt sich der Quersteg beispielsweise parallel zum Boden des Steckdosentopfes orientieren, so dass durch eine entsprechende Anschlagfläche eine Anlage des Querstegs mit geringsten Toleranzen sichergestellt ist.According to an unclaimed further aspect of the present invention, this relates to a grounding bracket, in particular for a protective contact socket of the type described above, the grounding bracket having a base and at least one grounding contact connected to the base, which has a crossbar at its outer (free) end. The grounding bracket can be designed as described above. It can be advantageous here if the ground contact is bent into a loop whose curvature has a turning point. This allows the crossbar to be oriented, for example, parallel to the bottom of the socket pot, so that a corresponding stop surface ensures that the crossbar rests with the lowest tolerances.

Nach einer weiteren nicht beanspruchten vorteilhaften Ausführungsform kann der Erdungsbügel ein einstückiges Stanz-Biegeteil mit einer streifenförmigen Basis sein, die an ihren beiden Enden jeweils einen Erdungskontakt aufweist, dessen äußeres Ende einen Quersteg aufweist, wobei insbesondere in der Mitte der Basis eine Befestigungsöffnung vorgesehen sein kann. Ein solcher Erdungsbügel lässt sich kostengünstig herstellen, was insbesondere für einen Massenartikel wie Steckdosen von großem Vorteil ist.According to a further unclaimed advantageous embodiment, the grounding bracket can be a one-piece stamped and bent part with a strip-shaped base, which has a grounding contact at both ends, the outer end of which has a crossbar, and a fastening opening can be provided in particular in the middle of the base . Such a grounding bracket can be produced inexpensively, which is particularly advantageous for a mass-produced item such as sockets.

Nachfolgend wird die vorliegende Erfindung rein beispielhaft anhand vorteilhafter Ausführungsformen und unter Bezugnahme auf die beigefügten Zeichnungen beschrieben. Es zeigen:

Fig. 1
eine perspektivische Ansicht einer Schutzkontaktsteckdose;
Fig. 2
die perspektivische Ansicht von Fig. 1 mit abgenommenem Sichtrahmen und abgenommener Abdeckung;
Fig. 3
eine perspektivische Ansicht eines Erdungsbügels;
Fig. 4
eine Teilschnittansicht einer weiteren nicht beanspruchten Ausführungsform eines Erdungsbügels mit aufgesetzter Abdeckung;
Fig. 5 bis 7
perspektivische Teilansichten der Schutzkontaktsteckdose von Fig. 1 und 2;
Fig. 8
eine Teilschnittansicht einer weiteren Ausführungsform einer Schutzkontaktsteckdose;
Fig. 9
eine Teilschnittansicht der Schutzkontaktsteckdose von Fig. 8 mit eingestecktem, jedoch nicht dargestelltem Stecker;
Fig. 10
eine Teilschnittansicht einer weiteren Ausführungsform einer Schutzkontaktsteckdose; und
Fig. 11
eine Teilschnittansicht der Schutzkontaktsteckdose von Fig. 10 mit eingestecktem, jedoch nicht dargestelltem Stecker.
The present invention is described below purely by way of example using advantageous embodiments and with reference to the accompanying drawings. Show it:
Fig. 1
a perspective view of a protective contact socket;
Fig. 2
the perspective view of Fig. 1 with viewing frame and cover removed;
Fig. 3
a perspective view of a grounding bracket;
Fig. 4
a partial sectional view of a further unclaimed embodiment of a grounding bracket with an attached cover;
Fig. 5 to 7
Perspective partial views of the protective contact socket from Fig. 1 and 2 ;
Fig. 8
a partial sectional view of a further embodiment of a protective contact socket;
Fig. 9
a partial sectional view of the protective contact socket from Fig. 8 with plug inserted, but not shown;
Fig. 10
a partial sectional view of a further embodiment of a protective contact socket; and
Fig. 11
a partial sectional view of the protective contact socket from Fig. 10 with plug inserted, but not shown.

Fig. 1 und 2 zeigen eine Schutzkontaktsteckdose 10, die einen Sockel 12 mit zwei elektrischen Kontakten 14 (in Fig. 2 ist nur einer erkennbar) aufweist, welche auf an sich bekannte Art und Weise mit elektrischen Anschlussklemmen verbunden sind. Mit dem Sockel 12 ist ein mittig angeordneter Erdungsbügel 15 verbunden, der eine Basis 16 aufweist, an deren beiden äußeren Enden einstückig jeweils ein Erdungskontakt 18 vorgesehen ist. Der Erdungsbügel ist mit einer nicht dargestellten Erdungsklemme verbunden. Fig. 1 and 2 show a protective contact socket 10, which has a base 12 with two electrical contacts 14 (in Fig. 2 only one can be seen), which are connected to electrical connection terminals in a manner known per se. A centrally arranged grounding bracket 15 is connected to the base 12 and has a base 16, at each of whose two outer ends a grounding contact 18 is provided in one piece. The grounding bracket is connected to a grounding terminal, not shown.

Im montierten Zustand ist auf den Sockel 12 ein Sichtrahmen 20 aufgelegt, der von einer Abdeckung 22 gehalten ist, die mit dem Sockel 12 verschraubt ist. Die Abdeckung 22 ist auf an sich bekannte Art und Weise einstückig mit einem Steckdosentopf 24 versehen, in den ein passender Schutzkontaktstecker eingesteckt werden kann. In der Umfangswand des Steckdosentopfes 24 sind zwei diametral gegenüberliegende Schlitze 26 vorgesehen (in Fig. 1 ist lediglich einer erkennbar), wobei durch jeden Schlitz 26 ein Erdungskontakt 18 in den Steckdosentopf 24 hineinragt.In the assembled state, a viewing frame 20 is placed on the base 12 and is held by a cover 22 which is screwed to the base 12. The cover 22 is provided in one piece in a manner known per se with a socket pot 24 into which a suitable protective contact plug can be inserted. Two diametrically opposite slots 26 are provided in the peripheral wall of the socket pot 24 (in Fig. 1 only one is recognizable), a grounding contact 18 protruding into the socket pot 24 through each slot 26.

Zur Montage der Steckdose 10 ist an dem Sockel 12 ein Tragring 28 befestigt, mit dem der Sockel beispielsweise in einer Hohlwanddose verschraubt werden kann. Zusätzlich sind Befestigungskrallen 30 vorgesehen, mit denen der Sockel in einer Wand oder Dose verklemmt werden kann.To mount the socket 10, a support ring 28 is attached to the base 12, with which the base can be screwed into a hollow wall box, for example. In addition, fastening claws 30 are provided with which the base can be clamped in a wall or box.

Fig. 3 zeigt eine perspektivische Ansicht eines Erdungsbügels 15, wie er bei der Ausführungsform von Fig. 1 und Fig. 2 Anwendung finden kann. Die Basis 16 des Erdungsbügels 15 ist streifenförmig ausgebildet und weist in ihrer Mitte eine Befestigungsöffnung 32 auf, durch die beispielsweise ein Niet zur Befestigung des Erdungsbügels an dem Sockel durchgeführt werden kann. An den beiden äußeren Enden der Basis 16 ist einstückig jeweils ein Erdungskontakt 18 angeformt, der jeweils zu einer Schlaufe gebogen ist. Die Krümmung der Schlaufe besitzt jedoch einen Wendepunkt W und jenseits des Wendepunktes W ist am äußeren Ende jedes Erdungskontaktes 18 ein Quersteg 34 ausgebildet. Wie dabei Fig. 3 verdeutlicht, bildet bei jedem Erdungskontakt 18 der Quersteg 34 und ein hieran in Richtung der Schlaufe angrenzender Bereich einen in Draufsicht T-förmigen Endabschnitt 36, der im Wesentlichen planar ausgebildet ist und in einer zur Basis 16 parallelen Ebene verläuft. Fig. 3 shows a perspective view of a grounding bracket 15, as used in the embodiment of Fig. 1 and Fig. 2 can find application. The base 16 of the grounding bracket 15 is strip-shaped and has a fastening opening 32 in its center, through which, for example, a rivet can be passed to fasten the grounding bracket to the base. A grounding contact 18 is integrally formed on each of the two outer ends of the base 16 and is bent into a loop. However, the curvature of the loop has a turning point W and beyond the turning point W a crossbar 34 is formed at the outer end of each ground contact 18. Like that Fig. 3 clarified, for each ground contact 18, the crossbar 34 and an area adjacent thereto in the direction of the loop form a top view T-shaped end section 36, which is essentially planar and runs in a plane parallel to the base 16.

Die Fig. 5 bis Fig. 7 zeigen vergrößerte Teildarstellungen, die verdeutlichen, wie der Erdungsbügel 15 bzw. der Erdungskontakt 18 relativ zum Sockel 12 angeordnet ist. Um für den Quersteg 34 des Erdungskontaktes 18 einen Anschlag zu bilden, ist bei dieser Ausführungsform der Sockel 12 mit einem Wandabschnitt 38 versehen, der eine nach oben offene U-förmige Ausnehmung 40 aufweist, durch welche der Erdungskontakt 18 hindurchgeführt ist. Die Außenseite des Wandabschnitts 38 bildet dabei einen Anschlag für den Quersteg 34, so dass sich dieser nicht in einer Richtung quer zur Einsteckrichtung der Steckdose und in Richtung des gegenüberliegenden Erdungskontaktes 18 bewegen kann.The Fig. 5 to Fig. 7 show enlarged partial representations that illustrate how the grounding bracket 15 or the grounding contact 18 is arranged relative to the base 12. In order to form a stop for the crossbar 34 of the grounding contact 18, in this embodiment the base 12 is provided with a wall section 38 which has an upwardly open U-shaped recess 40 through which the grounding contact 18 is passed. The outside of the wall section 38 forms a stop for the crossbar 34, so that it is cannot move in a direction transverse to the insertion direction of the socket and in the direction of the opposite ground contact 18.

Wie weiterhin Fig. 6 und 7 verdeutlichen, lässt sich der Quersteg 34 in Einsteckrichtung zwar etwas bewegen, wenn eine Kraft K in Einsteckrichtung auf den Erdungskontakt 18 ausgeübt wird. Allerdings ist an dem Sockel 12 ein Steg 42 vorgesehen, der als Anschlag für den Quersteg 34 dient, wenn dieser von einer Kraft K in Einsteckrichtung beaufschlagt wird.As continues Figs. 6 and 7 To illustrate, the crossbar 34 can be moved slightly in the insertion direction if a force K is exerted on the ground contact 18 in the insertion direction. However, a web 42 is provided on the base 12, which serves as a stop for the cross web 34 when it is acted upon by a force K in the insertion direction.

Schließlich zeigt Fig. 4 eine geringfügig abgewandelte Ausführungsform eines Erdungsbügels 15, bei dem an den beiden Enden der Basis 16 wiederum ein schlaufenförmiger Erdungskontakt 18 ausgebildet ist. Am äußeren bzw. freien Ende des Erdungskontaktes 18 ist wiederum ein Quersteg 34 vorgesehen. Dieser erstreckt sich jedoch nicht parallel zur Basis 16, sondern senkrecht zu dieser.Finally shows Fig. 4 a slightly modified embodiment of a grounding bracket 15, in which a loop-shaped grounding contact 18 is formed at the two ends of the base 16. A crossbar 34 is again provided at the outer or free end of the grounding contact 18. However, this does not extend parallel to the base 16, but perpendicular to it.

Um ein Einführen der Abdeckung 22 über den Erdungskontakt 18 zu erleichtern, sind bei dieser Ausführungsform an dem Quersteg 34 zwei gekrümmte Zungen 46 vorgesehen, die beim Aufsetzen der Abdeckung 22 ein Einführen des Erdungskontaktes 18 in den Schlitz 26 erleichtern, der in der Umfangswand des Steckdosentopfes 24 vorgesehen ist.In order to make it easier to insert the cover 22 via the grounding contact 18, in this embodiment two curved tongues 46 are provided on the crossbar 34, which facilitate insertion of the grounding contact 18 into the slot 26 when the cover 22 is put on, which is in the peripheral wall of the socket pot 24 is provided.

Wie gut zu erkennen ist, bildet der Quersteg 34 bei dieser Ausführungsform einen Anschlag für den Erdungskontakt 18, der sich nicht im Bereich des Bodens 25 des Steckdosentopfes 24 befindet. Vielmehr fixiert der Quersteg 34 die Lage des Erdungskontaktes 18 in einem Bereich der Umfangswand des Steckdosentopfes 24, der sich nahe zum Bereich des Eintritts des Steckdosentopfes 24 befindet. Dieser Bereich verformt sich allenfalls geringfügig, wenn der Boden 25 durch Anziehen einer Befestigungsschraube verformt wird.As can be clearly seen, in this embodiment the crossbar 34 forms a stop for the grounding contact 18, which is not located in the area of the bottom 25 of the socket pot 24. Rather, the crossbar 34 fixes the position of the grounding contact 18 in an area of the peripheral wall of the socket pot 24, which is close to the area of the entrance to the socket pot 24. This area deforms at most slightly when the base 25 is deformed by tightening a fastening screw.

Fig. 8 und Fig. 9 zeigen eine weitere Ausführungsform einer Schutzkontaktsteckdose, wobei für gleiche Komponenten gleiche Bezugszeichen verwendet sind. Hierbei zeigt Fig. 9 den Erdungskontakt 18 in einer Position, in der sich dieser bei eingestecktem Stecker befindet, wobei der Stecker selbst jedoch nicht dargestellt ist. Wie Fig. 9 verdeutlicht, wird der Erdungskontakt 18 bei Einstecken des Steckers nicht nur durch den Schlitz radial nach außen gedrückt, sondern auch in Einsteckrichtung nach unten gedrückt bis der Quersteg 34 an dem Tragrahmen 28 anschlägt. Unterhalb des Tragrahmens 28 befindet sich jedoch kein Teil des Erdungskontaktes 18, so dass dieser Bereich für versteifende Komponenten, elektronische Bauteile oder dergleichen verwendet werden kann. Fig. 8 and Fig. 9 show a further embodiment of a protective contact socket, with the same reference numbers being used for the same components. This shows Fig. 9 the ground contact 18 in a position in which it is when the plug is inserted, although the plug itself is not shown. How Fig. 9 clarified, when the plug is inserted, the ground contact 18 is not only pressed radially outwards through the slot, but also pressed downwards in the insertion direction until the crossbar 34 abuts the support frame 28. However, there is no part of the ground contact 18 below the support frame 28, so that this area can be used for stiffening components, electronic components or the like.

Besonders vorteilhaft ist die erfindungsgemäße Anordnung auch bei einer Ausführungsform wie sie in Fig. 10 und Fig. 11 gezeigt ist. Bei dieser Ausführungsform ist die Abdeckung 22 so gestaltet, dass der Bereich außerhalb des Steckdosentopfes bis zum Rand der Abdeckung sehr klein gehalten ist. Zudem besitzt die Abdeckung 22 - wie bei allen Ausführungsformen - einen sich parallel zur Wand des Steckdosentopfes erstreckenden kreisförmigen Rand, der sich in das Innere der Steckdose hineinerstreckt. Bei dieser Ausführungsform verbleibt in dem Bereich zwischen dem umlaufenden Rand ohne Steckdosentopf ein nur sehr geringer Freiraum. Da jedoch der Erdungskontakt 18 im Bereich des Bodens des Steckdosentopfes in diesen hineingeführt und im Bereich des oberen Schlitzendes des Steckdosentopfes wieder aus diesem herausgeführt ist, kann der Erdungskontakt auch bei eingestecktem Stecker (Fig. 11) Platz finden und sich an seinem freien äußeren Ende durch den Quersteg 34 am Tragrahmen 28 abstützen.The arrangement according to the invention is particularly advantageous in an embodiment as shown in Fig. 10 and Fig. 11 is shown. In this embodiment, the cover 22 is designed in such a way that the area outside the socket pot is kept very small up to the edge of the cover. In addition, the cover 22 - as in all embodiments - has a circular edge that extends parallel to the wall of the socket pot and extends into the interior of the socket. In this embodiment, there is only very little free space in the area between the peripheral edge without a socket pot. However, since the grounding contact 18 is led into the socket pot in the area of the bottom of the socket pot and is led out again in the area of the upper slot end of the socket pot, the grounding contact can also be used when the plug is inserted ( Fig. 11 ) find space and are supported at its free outer end by the crossbar 34 on the support frame 28.

Claims (6)

  1. A protective contact socket (10) comprising a base (12) having electrical plug-in contacts (14), a grounding hoop (15) which is fastened to the base (12) and which has a base (16) and at least one grounding contact (18) connected to the base (16), and a cover (22) which is provided with a socket cup (24) and which has at least one slot (26) through which the grounding contact (18) projects into the socket cup (24), wherein an outer end of the grounding contact (18) is arranged outside the socket cup (24), the grounding contact (18) has a transverse web (34) at its outer end and the base (12) or a component (28, 38) fixedly connected to the base (12) forms at least one abutment for the transverse web (34),
    characterized in that
    the abutment blocks the transverse web (34) in the direction (K) of a plug-in direction of the socket (10).
  2. A protective contact socket according to claim 1,
    characterized in that
    the transverse web (34) and an adjoining region of the grounding contact (18) form an end section (36) which is T-shaped in a plan view.
  3. A protective contact socket according to claim 1,
    characterized in that
    the abutment blocks the transverse web (34) in a direction transverse to the plug-in direction of the socket (10).
  4. A protective contact socket according to any one of the preceding claims,
    characterized in that
    it has a support ring (28), and in that the abutment for the transverse web (34) is formed by the support ring (28).
  5. A protective contact socket according to any one of the preceding claims,
    characterized in that
    the grounding contact (18) is bent into a loop which enters the socket cup (24) through the slot (26) and exits it again through the slot (26).
  6. A protective contact socket according to claim 5,
    characterized in that
    a curvature of the loop has an inflection point (W).
EP21305476.0A 2020-05-11 2021-04-12 Protective contact socket Active EP3926762B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020112730.8A DE102020112730A1 (en) 2020-05-11 2020-05-11 PROTECTIVE SOCKET

Publications (2)

Publication Number Publication Date
EP3926762A1 EP3926762A1 (en) 2021-12-22
EP3926762B1 true EP3926762B1 (en) 2024-03-13

Family

ID=75690223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21305476.0A Active EP3926762B1 (en) 2020-05-11 2021-04-12 Protective contact socket

Country Status (4)

Country Link
EP (1) EP3926762B1 (en)
DE (1) DE102020112730A1 (en)
FI (1) FI3926762T3 (en)
PL (1) PL3926762T3 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE512969C (en) 1930-11-21 Siemens Schuckertwerke Akt Ges Plug-in device with contact elements for connecting an earthed or zeroed line connected to the socket with a movable earth line connected to the plug
DE1008805B (en) 1955-09-10 1957-05-23 Albrecht Jung G M B H Earthing contact socket
FR1363779A (en) * 1962-07-28 1964-06-12 Siemens Ag Socket with protective contacts
DE1490314A1 (en) 1962-07-28 1968-12-19 Siemens Ag Socket with protective contact parts

Also Published As

Publication number Publication date
PL3926762T3 (en) 2024-07-22
FI3926762T3 (en) 2024-06-06
DE102020112730A1 (en) 2021-11-11
EP3926762A1 (en) 2021-12-22

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