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EP1336228B1 - Actuator for controlling fittings - Google Patents

Actuator for controlling fittings Download PDF

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Publication number
EP1336228B1
EP1336228B1 EP01997866A EP01997866A EP1336228B1 EP 1336228 B1 EP1336228 B1 EP 1336228B1 EP 01997866 A EP01997866 A EP 01997866A EP 01997866 A EP01997866 A EP 01997866A EP 1336228 B1 EP1336228 B1 EP 1336228B1
Authority
EP
European Patent Office
Prior art keywords
contact elements
plug contact
extensions
base frame
pin
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
EP01997866A
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German (de)
French (fr)
Other versions
EP1336228A1 (en
Inventor
Peter Malus
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.)
Auma Riester GmbH and Co KG
Original Assignee
Auma Riester 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 Auma Riester GmbH and Co KG filed Critical Auma Riester GmbH and Co KG
Publication of EP1336228A1 publication Critical patent/EP1336228A1/en
Application granted granted Critical
Publication of EP1336228B1 publication Critical patent/EP1336228B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H01R13/527—Flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure

Definitions

  • the invention relates to a device with an explosion-proof housing, wherein a pressure-tight partition wall is provided with sealed feedthroughs for electrical lines between a housing interior and an outer terminal space, which are in the outer terminal compartment electrical connections for leads, as terminal connections for from the outside supplied, anklemmbare leads are formed, wherein a support member is provided for the terminal connections, which are connected to pin-like extensions and thus pass through the partition and wherein in the interior mating plug contact elements are provided for contacting the pin-like extensions.
  • Devices such as valve actuators are such devices that are manufactured among other things in explosion-proof design.
  • the inside of the device must be sealed pressure-resistant accordingly.
  • the supplied from the outside supply and control lines must therefore be guided through pressure-tight sealed feedthroughs into the interior.
  • terminals are arranged, to which the supply lines supplied from the outside can be clamped and to which also inside the housing through the sealing plug leading supply and control lines are connected.
  • Object of the present invention is to provide in an explosion-proof device of the type mentioned an electrical connection through which a simple installation with little effort is possible, even in case of service a simple disassembly and assembly is possible while wiring errors are practically excluded and also Under confined conditions and a large number of contacts the required clearances and creepage distances can be reached and the connection of supply lines are simplified.
  • the device is a valve actuator, that the support member itself forms the partition and that connected to the support member terminal connections with the extensions and located thereon plug contact elements in mutually offset planes and in the interior of the mating plug contact elements in complementary thereto staggered levels are arranged.
  • the clamping terminals located at the outer ends of the plug contact elements are arranged in different planes.
  • clear cross-section of the support member thus an increase in the distance of adjacent contacts or connection points is achieved, so that, as is usually the case with valve actuators, even under cramped conditions and large numbers of contacts complied with the required clearances and creepage distances can be.
  • inside plug contact elements are offset according to the terminal connections and to match the mating plug contact elements, which are mounted in a holder.
  • the terminal connections may in particular be arranged in groups, for example in three groups in mutually offset planes, and the mating plug contact elements of the holder may be arranged in planes complementary thereto.
  • the partition also forms the support member for the terminal connections, which are connected directly via the pin-like extensions with the internal plug contact elements.
  • a holder is provided for the mating plug-in contact elements, which has mating with the plug contact elements of the support member arranged receptacles for the therein particular definable mating plug contact elements. Wiring errors during assembly and after replacement of a unit unit are thus practically excluded, so that such work can be made by less skilled workers.
  • the support member is inserted into a tubular base frame part, which is used as a built-in part tightly between the housing and an outer, the terminal compartment bounding end cap.
  • This basic frame part allows easy pre-assembly and connection with the support member tightly inserted therein.
  • the carrier part consists of a plastic injection-molded part and is connected by injection molding with the base frame part and that the pin-like extensions which connect the terminal connections with the plug contact elements are embedded by injection molding tightly into the carrier part.
  • the use of the tubular base frame part is advantageous because good accessibility and handling is available for the injection process.
  • the terminal connections with pin-like extensions and plug contact elements having contacts in a Inserted injection mold and miteingegossen directly during the injection process, so that on one side of the partition, the terminal connections and on the other side, the plug contact elements are accessible.
  • the basic frame part with cast-in carrier part and contacts embedded tightly therein forms an insoluble unit after the curing of the potting compound.
  • the injection molding material used is in particular a thermosetting resin based on epoxy resin.
  • a part of a valve actuator 1 is shown, of which in the longitudinal section, in particular of the electronics receiving housing part 2 and a housing portion 3 are shown with electrical connections 4.
  • the housing part 2 is formed in explosion-proof design and sealed pressure-tight to the outside. Between the interior of this housing part and an outer connection space 5, a pressure-tight partition wall 6 is provided, at the same time forms a support member 7 for the electrical connections 4.
  • the support member 7 is inserted into a tubular base frame part 8 which is a built-in part between the housing part 2 and an outer, the terminal compartment 5 bounding end cap 9 is located.
  • Fig. 3 This basic frame part 8 is shown enlarged by dash-dotted lines end cover 9.
  • the carrier part 7 from the outside with removed end cover 9 accessible terminal connections 10, which are connected to pin-like extensions 11 and thus pass through the partition 6 and the support member 7.
  • plug contact elements 12 are provided, which are formed in the embodiment as sockets.
  • the pin-like extensions 11 are solid in the course of their longitudinal extent and go at one end into the sockets and at the other end screw-in thread for the terminal connections 10 on. Overall, these contact parts are integrally formed.
  • Counter plug contact elements 13 in the form of plugs are arranged in a holder 14 and held by this so that they are aligned with the plug contact elements 12.
  • guides are provided for the correct position merging of these parts on the base frame part 8 and the holder 14.
  • a groove 15 and the holder to a matching projection 16 are provided in the base frame part.
  • the holder 14 receiving sleeves 25, in which the mating plug contact elements 13 are fixed after insertion In the in Fig. 1 and 3 shown mounting position, where the electrical connectors interlock, is the holder 14th set by an engaging in an annular groove 17 locking ring 18 in the axial direction.
  • the formed as pins mating plug contact elements 13 are located within receiving cavities of the holder 14 and are axially fixed therein.
  • electrical lines 19 are connected, which lead to assemblies within the housing part 2 ( Fig.1 ).
  • the carrier part 7, which at the same time also forms the dividing wall 6, is connected in a pressure-tight manner to the tubular or tubular basic frame part 8.
  • the material used is preferably a thermosetting resin based on epoxy resin.
  • the injection process takes place at elevated temperature, for example, about 180 ° C.
  • the contacts, so the terminal connections 10 with plug contact elements 12 and connecting them, pin-like extensions 11 are embedded in this injection process with the terminal connections 10 at the outside and the plug contact elements 12 at protrude the inside.
  • the potting compound used is selected so that an adapted to the metallic base frame part 8 and the metallic, pin-like extensions 11 coefficient of thermal expansion is present.
  • an elastic seal in the exemplary embodiment in the form of an O-ring 20, is used in the connection region between the base frame part 8 and the carrier part 7 ( Figure 3 ).
  • form-fitting, interlocking, in particular circumferential profilings 21 in the form of annular grooves and projections are provided in this connection region.
  • the support member 7 is additionally secured in the axial direction.
  • the pin-like extensions 11 are, as in Fig. 3 shown, provided with annular grooves 22 or the like profiles, possibly also with knurls for increasing the surface area in order to achieve an improved seal.
  • the terminal connections 10 are arranged in groups in mutually offset planes. In the embodiment, three mutually offset planes are provided. Also connected to the terminal connections 10, inside plug contact elements 12 are offset according to the terminal connections 10 and to match the mating plug contact elements 13 which are mounted in the holder 14.
  • the staggering in several staircase-shaped levels allows for compact design compliance with the prescribed clearances and creepage distances even at radially comparatively small distances of the individual contacts.
  • a relatively large number of electrical contacts can be arranged with clamping connections 10, wherein in the exemplary embodiment 42 such clamping connections 10 are provided (FIG. Fig. 2 ).
  • the individual terminal connections 10 are shielded from each other by walls 26 bordering one another.
  • the base frame part 8 made of metal, preferably made of die-cast aluminum. It has at its ends in each case connecting flanges 23, 24, via the connections on the one hand with the housing part 2 and on the other hand with the end cover 9 are possible. Also in the area of these compounds O-ring seals are provided.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
  • Magnetically Actuated Valves (AREA)
  • Actuator (AREA)
  • Vehicle Body Suspensions (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fluid-Damping Devices (AREA)
  • Motor Or Generator Frames (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

An actuator for controlling fittings has an explosion-protected housing and a pressure-tight separating wall with sealed bushings for electric lines between the inside of the housing and an outer terminal compartment. Electrical connections with connection terminals for supply lines are located in said outer terminal compartment. A support part (7) which forms the separating wall (6) is provided for the connection terminals (10) and is connected to pin-like extensions (11). Said pin-like extensions penetrate the separating wall (6) and plug-in contact elements (12) are provided at the inner end of said pin-like extensions (11), for contacting with mating plug-in contact elements (13). At the same time, the separating wall (6) forms the support part (7) for the connection terminals (10), which are directly connected to the inner plug-in contact elements (12) by the pin-like extensions (11). This configuration forms a compact connection unit and simplifies assembly considerably. For servicing purposes, it is possible to change complete units quickly by re-plugging, hereby avoiding complicated disconnection and connection of the lines.

Description

Die Erfindung bezieht sich auf eine Einrichtung mit einem explosionsgeschützten Gehäuse, wobei eine druckdichte Trennwand mit abgedichteten Durchführungen für elektrische Leitungen zwischen einem Gehäuse-Innenraum und einem äußeren Anschlussraum vorgesehen ist, wobei sich im äußeren Anschlussraum Elektroanschlüsse für Zuleitungen befinden, die als Klemmanschlüsse für von außen zugeführte, anklemmbare Zuleitungen ausgebildet sind, wobei ein Trägerteil für die Klemmanschlüsse vorgesehen ist, die mit stiftartigen Verlängerungen verbunden sind und damit die Trennwand durchsetzen und wobei im Innenraum Gegensteckkontaktelemente zum Kontaktieren der stiftartigen Verlängerungen vorgesehen sind.The invention relates to a device with an explosion-proof housing, wherein a pressure-tight partition wall is provided with sealed feedthroughs for electrical lines between a housing interior and an outer terminal space, which are in the outer terminal compartment electrical connections for leads, as terminal connections for from the outside supplied, anklemmbare leads are formed, wherein a support member is provided for the terminal connections, which are connected to pin-like extensions and thus pass through the partition and wherein in the interior mating plug contact elements are provided for contacting the pin-like extensions.

Geräte wie Armaturen-Stellantriebe sind solche Einrichtungen, die unter anderem auch in explosionsgeschützter Ausführung hergestellt werden. Dazu muss das Innere des Gerätes entsprechend druckfest abgedichtet sein. Die von außen zugeführten Versorgungs- und Steuerleitungen müssen demnach durch druckfest abgedichtete Durchführungen ins Innere geführt werden.
Dazu ist es bekannt, die Leitungen durch einen Stopfen zu führen, der in die Trennwand zwischen Außenbereich und explosionsgeschütztem Innenraum eingeschraubt und durch flüssiges Dichtmittel gesichert ist.
Im Außenbereich sind Anschlussklemmen angeordnet, an die die von außen zugeführten Zuleitungen angeklemmt werden können und an die auch ins Gehäuseinnere durch den Dichtstopfen führende Versorgungs- und Steuerleitungen angeschlossen sind.
Bei einer Demontage mit Öffnen des Gehäuses ist es erforderlich, die Kabel abzuklemmen und bei Austausch einer Geräteeinheit danach wieder anzuschließen. Verdrahtungsfehler sind dabei nicht auszuschließen. Hinzukommt, dass der Montageaufwand vergleichsweise groß und zeitaufwendig ist.
Aus der US-A-6 109 979 ist eine Einrichtung gemäß Oberbegriff des Anspruchs 1 mit einem explosionsgeschützten Durchführungsverbinder bekannt, der ein Gehäuse mit einem Durchführungs-Vorsprung und eine flanschartige Basisplatte aufweist. Mit dem Durchführungs-Vorsprung wird der Durchführungsverbinder durch eine Öffnung einer Trennwand zwischen einem explosionssicheren Bereich und einem demgegenüber durch die Trennwand abgetrennten, einen äußeren Anschlussraum bildenden Bereich gesteckt und mittels der Basisplatte an der Trennwand befestigt.
Der Durchführungsverbinder weist im äußeren Anschlussraum Schraubklemmanschlüsse für Zuleitungen von äußeren Schaltkreisen und im inneren, explosionssicheren Bereich Anschlussstifte auf. Die Schraubklemmanschlüsse weisen zur Vermeidung von Funkenüberschlägen zwischen den jeweils benachbarten Klemmanschlüssen Wände auf. Einerseits ist dadurch die Zugänglichkeit der Klemmanschlüsse zum Anschließen von Zuleitungen behindert und es wird zusätzlich Platz benötigt, der aber häufig nicht zur Verfügung steht. Dementsprechend ist die Anzahl der Klemmanschlüsse bei gegebenen Platzverhältnissen in seitlicher Erstreckungsrichtung begrenzt.Devices such as valve actuators are such devices that are manufactured among other things in explosion-proof design. For this purpose, the inside of the device must be sealed pressure-resistant accordingly. The supplied from the outside supply and control lines must therefore be guided through pressure-tight sealed feedthroughs into the interior.
For this purpose, it is known to guide the lines through a plug which is screwed into the partition between the outside and explosion-proof interior and secured by liquid sealant.
In the outer area, terminals are arranged, to which the supply lines supplied from the outside can be clamped and to which also inside the housing through the sealing plug leading supply and control lines are connected.
When disassembling with opening the housing, it is necessary to disconnect the cables and then reconnect when replacing a device unit. Wiring errors are not to be ruled out. In addition, the assembly cost is relatively large and time consuming.
From the US-A-6,109,979 a device according to the preamble of claim 1 with an explosion-proof feedthrough connector is known, comprising a housing with a feed-through projection and a flange-like base plate. With the feedthrough projection, the feedthrough connector is inserted through an opening of a partition wall between an explosion-proof area and a portion separated from the partition wall, forming an outer terminal space, and fixed to the partition wall by the base plate.
The feedthrough connector has in the outer terminal compartment Schraubklemmanschlüsse for leads from external circuits and inside, explosion-proof area pins on. The Schraubklemmanschlüsse have to avoid sparkover between the adjacent terminal connections walls. On the one hand, the accessibility of the terminal connections for connecting leads is thereby hindered and additional space is required, which however is often not available. Accordingly, the number of terminal connections is limited at given space in the lateral direction.

Aufgabe der vorliegenden Erfindung ist es, bei einer explosionsgeschützten Einrichtung der eingangs erwähnten Art einen Elektroanschluss vorzusehen, durch den eine einfache Montage mit geringem Aufwand möglich ist, wobei auch im Servicefall eine einfache Demontage und Montage möglich ist und dabei Verdrahtungsfehler praktisch ausgeschlossen sind und wobei auch unter beengten Verhältnissen und einer großer Anzahl von Kontakten die erforderlichen Luft- und Kriechstrecken erreichbar und das Anschließen von Zuleitungen vereinfacht sind.Object of the present invention is to provide in an explosion-proof device of the type mentioned an electrical connection through which a simple installation with little effort is possible, even in case of service a simple disassembly and assembly is possible while wiring errors are practically excluded and also Under confined conditions and a large number of contacts the required clearances and creepage distances can be reached and the connection of supply lines are simplified.

Zur Lösung dieser Aufgabe wird vorgeschlagen, dass die Einrichtung ein Armaturen-Stellantrieb ist, dass das Trägerteil selbst die Trennwand bildet und dass die mit dem Trägerteil verbundenen Klemmanschlüsse mit den Verlängerungen und daran befindlichen Steckkontaktelementen in zueinander versetzten Ebenen und im Innenraum die Gegensteckkontaktelemente in komplementär dazu versetzten Ebenen angeordnet sind.To solve this problem, it is proposed that the device is a valve actuator, that the support member itself forms the partition and that connected to the support member terminal connections with the extensions and located thereon plug contact elements in mutually offset planes and in the interior of the mating plug contact elements in complementary thereto staggered levels are arranged.

Damit sind die an den äußeren Enden der Steckkontaktelemente befindlichen Klemmanschlüsse in unterschiedlichen Ebenen angeordnet. Bei einem vorgegebenen, lichten Querschnitt des Trägerteils wird somit eine Vergrößerung des Abstandes benachbarter Kontakte beziehungsweise Anschlussstellen erreicht, so dass, wie dies bei Armaturen-Stellantrieben meist der Fall ist, auch unter beengten Verhältnissen und großer Anzahl von Kontakten die vorgeschriebenen Luft- und Kriechstrecken eingehalten werden können.
Auch die mit den Klemmanschlüssen über die Verlängerungen verbundenen, innenseitigen Steckkontaktelemente sind entsprechend den Klemmanschlüssen versetzt und dazu passend auch die Gegensteckkontaktelemente, die in einem Halter befestigt sind.
Die Klemmanschlüsse können insbesondere gruppenweise, beispielsweise in drei Gruppen in zueinander versetzten Ebenen und die Gegensteckkontaktelemente des Halters in komplementär dazu versetzten Ebenen angeordnet sein.
Die Trennwand bildet gleichzeitig das Trägerteil für die Klemmanschlüsse, die direkt über die stiftartigen Verlängerungen mit den innenliegenden Steckkontaktelementen verbunden sind. Damit ist eine kompakte Anschlusseinheit gebildet. Durch die Steckverbindungen zwischen den mit Einbauteilen verbundenen elektrischen Leitungen und den Klemmanschlüssen ist die Montage wesentlich vereinfacht und es kann im Servicefall ein Austausch kompletter Einheiten ohne aufwendiges Ab- und Anklemmen der Leitungen schnell durch Umstecken vorgenommen werden.
Besonders vorteilhaft ist es dabei, wenn ein Halter für die Gegensteckkontaktelemente vorgesehen ist, der passend zu den Steckkontaktelementen des Trägerteiles angeordnete Aufnahmen für die darin insbesondere festlegbaren Gegensteckkontaktelemente aufweist.
Verdrahtungsfehler bei der Montage und nach einem Austausch einer Geräteeinheit sind damit praktisch ausgeschlossen, so dass solche Arbeiten auch von weniger qualifizierten Arbeitskräften vorgenommen werden können.Thus, the clamping terminals located at the outer ends of the plug contact elements are arranged in different planes. For a given, clear cross-section of the support member thus an increase in the distance of adjacent contacts or connection points is achieved, so that, as is usually the case with valve actuators, even under cramped conditions and large numbers of contacts complied with the required clearances and creepage distances can be.
Also connected to the terminal connections on the extensions, inside plug contact elements are offset according to the terminal connections and to match the mating plug contact elements, which are mounted in a holder.
The terminal connections may in particular be arranged in groups, for example in three groups in mutually offset planes, and the mating plug contact elements of the holder may be arranged in planes complementary thereto.
The partition also forms the support member for the terminal connections, which are connected directly via the pin-like extensions with the internal plug contact elements. This forms a compact connection unit. Through the connections between the electrical cables connected to the mounting parts and the terminal connections the assembly is much easier and it can be made in case of service, an exchange of complete units without costly disconnecting and clamping the lines quickly by changing.
It is particularly advantageous if a holder is provided for the mating plug-in contact elements, which has mating with the plug contact elements of the support member arranged receptacles for the therein particular definable mating plug contact elements.
Wiring errors during assembly and after replacement of a unit unit are thus practically excluded, so that such work can be made by less skilled workers.

Eine vorteilhafte Ausführungsform sieht vor, dass das Trägerteil in ein rohrartiges Grundrahmenteil eingesetzt ist, das als Einbauteil dicht zwischen dem Gehäuse und einem äußeren, den Anschlussraum umgrenzenden Abschlussdeckel eingesetzt ist. Dieses Grundrahmenteil ermöglicht eine einfache Vormontage und Verbindung mit dem dicht darin eingesetzten Trägerteil.
Bevorzugt ist vorgesehen, dass das Trägerteil aus einem Kunststoff-Spritzgießteil besteht und durch Spritzgießen mit dem Grundrahmenteil verbunden ist und dass die stiftartigen Verlängerungen, welche die Klemmanschlüsse mit den Steckkontaktelementen verbinden, durch Spritzgießen dicht in das Trägerteil eingebettet sind.
Gerade bei dieser Ausführungsform ist der Einsatz des rohrartigen Grundrahmenteiles vorteilhaft, weil für den Spritzvorgang eine gute Zugänglichkeit und Handhabbarkeit vorhanden ist. Für die Herstellung werden vor dem Spritz- oder Vergussvorgang die die Klemmanschlüsse mit stiftartigen Verlängerungen und Steckkontaktelementen aufweisenden Kontakte in eine Spritzgießform eingelegt und beim Spritzvorgang direkt miteingegossen, so dass auf der einen Seite der Trennwand die Klemmanschlüsse und auf der anderen Seite die Steckkontaktelemente zugänglich sind. Das Grundrahmenteil mit eingegossenem Trägerteil und darin dicht eingebetteten Kontakten bildet nach dem Aushärten der Vergussmasse eine unlösbare Einheit. Als Spritzgießmaterial wird insbesondere ein Duroplast auf Epoxidharz-Basis verwendet.An advantageous embodiment provides that the support member is inserted into a tubular base frame part, which is used as a built-in part tightly between the housing and an outer, the terminal compartment bounding end cap. This basic frame part allows easy pre-assembly and connection with the support member tightly inserted therein.
It is preferably provided that the carrier part consists of a plastic injection-molded part and is connected by injection molding with the base frame part and that the pin-like extensions which connect the terminal connections with the plug contact elements are embedded by injection molding tightly into the carrier part.
Especially in this embodiment, the use of the tubular base frame part is advantageous because good accessibility and handling is available for the injection process. For the preparation before the injection or casting process, the terminal connections with pin-like extensions and plug contact elements having contacts in a Inserted injection mold and miteingegossen directly during the injection process, so that on one side of the partition, the terminal connections and on the other side, the plug contact elements are accessible. The basic frame part with cast-in carrier part and contacts embedded tightly therein forms an insoluble unit after the curing of the potting compound. The injection molding material used is in particular a thermosetting resin based on epoxy resin.

Zusätzliche Ausgestaltungen der Erfindung sind in den weiteren Unteransprüchen aufgeführt.
Nachstehend ist die Erfindung mit ihren wesentlichen Einzelheiten anhand der Zeichnungen noch näher erläutert.Additional embodiments of the invention are set forth in the further subclaims.
The invention with its essential details with reference to the drawings is explained in more detail below.

Es zeigt:

Fig. 1
eine Längsschnittdarstellung eines teilweise dargestellten Armaturen-Stellantriebs,
Fig.2
eine Rückseitenansicht eines Grundrahmenteiles mit Trägerteil und Klemmanschlüssen und
Fig. 3
eine vergrößerte Längsschnittdarstellung im Bereich eines Grundrahmenteiles mit Kontakt-Trägerteil.
It shows:
Fig. 1
a longitudinal sectional view of a partially shown valve actuator,
Fig.2
a rear view of a base frame part with carrier part and clamping connections and
Fig. 3
an enlarged longitudinal sectional view in the region of a base frame part with contact-carrier part.

Im Ausführungsbeispiel gemäß Fig. 1 ist ein Teil eines Armaturen-Stellantriebs 1 gezeigt, von dem im Längsschnitt insbesondere der die Elektronik aufnehmende Gehäuseteil 2 sowie ein Gehäuseabschnitt 3 mit Elektroanschlüssen 4 dargestellt sind. Das Gehäuseteil 2 ist in explosionsgeschützter Ausführung ausgebildet und nach außen hin druckfest abgedichtet. Zwischen dem Inneren dieses Gehäuseteiles und einem äußeren Anschlussraum 5 ist eine druckdichte Trennwand 6 vorgesehen, die gleichzeitig auch ein Trägerteil 7 für die Elektroanschlüsse 4 bildet.In the embodiment according to Fig. 1 a part of a valve actuator 1 is shown, of which in the longitudinal section, in particular of the electronics receiving housing part 2 and a housing portion 3 are shown with electrical connections 4. The housing part 2 is formed in explosion-proof design and sealed pressure-tight to the outside. Between the interior of this housing part and an outer connection space 5, a pressure-tight partition wall 6 is provided, at the same time forms a support member 7 for the electrical connections 4.

Das Trägerteil 7 ist in ein rohrartiges Grundrahmenteil 8 eingesetzt welches sich als Einbauteil zwischen dem Gehäuseteil 2 und einem äußeren, den Anschlussraum 5 umgrenzenden Abschlussdeckel 9 befindet. In Fig. 3 ist dieses Grundrahmenteil 8 mit strichpunktiert angedeutetem Abschlussdeckel 9 vergrößert dargestellt. Gut zu erkennen ist hierbei, dass das Trägerteil 7 von außen bei abgenommenem Abschlussdeckel 9 zugängliche Klemmanschlüsse 10 aufweist, die mit stiftartigen Verlängerungen 11 verbunden sind und damit die Trennwand 6 beziehungsweise das Trägerteil 7 durchsetzen. Am inneren Ende der stiftartigen Verlängerungen 11 sind Steckkontaktelemente 12 vorgesehen, die im Ausführungsbeispiel als Buchsen ausgebildet sind. Die stiftartigen Verlängerungen 11 sind im Verlauf ihrer Längserstreckung massiv ausgebildet und gehen an einem Ende in die Buchsen über und weise am anderen Ende Einschraubgewinde für die Klemmanschlüsse 10 auf. Insgesamt sind diese Kontaktteile einstückig ausgebildet.
Gegensteckkontaktelemente 13 in Form von Steckern sind in einem Halter 14 angeordnet und von diesem so gehalten, dass sie mit den Steckkontaktelementen 12 fluchten. Außerdem sind am Grundrahmenteil 8 und am Halter 14 Führungen zum lagerichtigen Zusammenführen dieser Teile vorgesehen. Im Ausführungsbeispiel sind dazu im Grundrahmenteil eine Nut 15 und am Halter ein dazu passender Vorsprung 16 vorgesehen. Dadurch ist eine eindeutige Lagezuordnung gegeben, so dass der Halter mit den Gegensteckkontaktelementen 13 nur in passender Position an das Trägerteil 7 mit den Steckkontaktelementen 12 angenähert und dann die Kontaktelemente zusammengeführt werden können. Fehlerhafte Verbindungen sind dadurch ausgeschlossen.
Der Halter 14 ist zweckmäßigerweise als Kunststoff-Spritzgussteil ausgebildet. Zur Aufnahme der Gegensteckkontaktelemente 13 weist der Halter 14 Aufnahmehülsen 25 auf, in denen die Gegensteckkontaktelemente 13 nach dem Einführen festgelegt sind.
In der in Fig. 1 und 3 gezeigten Montagestellung, wo die elektrischen Steckverbindungen ineinander greifen, ist der Halter 14 durch einen in eine Ringnut 17 eingreifenden Sicherungsring 18 in axialer Richtung festgelegt.
Die als Stifte ausgebildeten Gegensteckkontaktelemente 13 befinden sich innerhalb von Aufnahmehöhlungen des Halters 14 und sind darin axial festgelegt. An die Gegensteckkontaktelemente 13 sind elektrische Leitungen 19 angeschlossen, die zu Baugruppen innerhalb des Gehäuseteiles 2 führen (Fig.1).
Wie bereits vorerwähnt, ist dass Trägerteil 7, das gleichzeitig auch die Trennwand 6 bildet, druckdicht mit dem rohr- oder hülsenförmigen Grundrahmenteil 8 verbunden. Dies wird erreicht, indem das Trägerteil 7 in das Grundrahmenteil 8 eingespritzt wird. Als Material kommt bevorzugt ein Duroplast auf Epoxidharz-Basis zum Einsatz. Der Einspritzvorgang erfolgt bei erhöhter Temperatur von beispielsweise etwa 180° C. Die Kontakte, also die Klemmanschlüsse 10 mit Steckkontaktelementen 12 und den diese verbindenden, stiftartigen Verlängerungen 11 werden bei diesem Spritzvorgang mit eingebettet, wobei die Klemmanschlüsse 10 bei der Außenseite und die Steckkontaktelemente 12 bei der Innenseite vorstehen. Im Trägerteil selbst sind somit nur die stiftartigen Verlängerungen 11 eingebettet.
Die verwendete Vergussmasse ist so ausgewählt, dass ein an das metallische Grundrahmenteil 8 und die metallischen, stiftartigen Verlängerungen 11 angepasster Wärmeausdehnungskoeffizient vorhanden ist. Um aber eine unter praktisch allen Bedingungen sichere, druckfeste Abdichtung zu erreichen, ist im Verbindungsbereich zwischen dem Grundrahmenteil 8 und dem Trägerteil 7 eine elastische Dichtung, im Ausführungsbeispiel in Form eines O-Ringes 20 eingesetzt (Fig.3). Zusätzlich sind in diesem Verbindungsbereich formschlüssig ineinandergreifende, insbesondere umlaufende Profilierungen 21 in Form von ringförmigen Nuten und Vorsprüngen vorgesehen. Dadurch wird das Trägerteil 7 zusätzlich in axialer Richtung gesichert.The support member 7 is inserted into a tubular base frame part 8 which is a built-in part between the housing part 2 and an outer, the terminal compartment 5 bounding end cap 9 is located. In Fig. 3 This basic frame part 8 is shown enlarged by dash-dotted lines end cover 9. Good to see here is that the carrier part 7 from the outside with removed end cover 9 accessible terminal connections 10, which are connected to pin-like extensions 11 and thus pass through the partition 6 and the support member 7. At the inner end of the pin-like extensions 11 plug contact elements 12 are provided, which are formed in the embodiment as sockets. The pin-like extensions 11 are solid in the course of their longitudinal extent and go at one end into the sockets and at the other end screw-in thread for the terminal connections 10 on. Overall, these contact parts are integrally formed.
Counter plug contact elements 13 in the form of plugs are arranged in a holder 14 and held by this so that they are aligned with the plug contact elements 12. In addition, guides are provided for the correct position merging of these parts on the base frame part 8 and the holder 14. In the embodiment, a groove 15 and the holder to a matching projection 16 are provided in the base frame part. As a result, a unique position assignment is given, so that the holder with the mating plug contact elements 13 only approximate in an appropriate position to the support member 7 with the plug contact elements 12 and then the contact elements can be brought together. Faulty connections are thereby excluded.
The holder 14 is expediently designed as a plastic injection-molded part. To accommodate the mating plug contact elements 13, the holder 14 receiving sleeves 25, in which the mating plug contact elements 13 are fixed after insertion.
In the in Fig. 1 and 3 shown mounting position, where the electrical connectors interlock, is the holder 14th set by an engaging in an annular groove 17 locking ring 18 in the axial direction.
The formed as pins mating plug contact elements 13 are located within receiving cavities of the holder 14 and are axially fixed therein. To the mating contact elements 13 electrical lines 19 are connected, which lead to assemblies within the housing part 2 ( Fig.1 ).
As already mentioned above, the carrier part 7, which at the same time also forms the dividing wall 6, is connected in a pressure-tight manner to the tubular or tubular basic frame part 8. This is achieved by injecting the carrier part 7 into the base frame part 8. The material used is preferably a thermosetting resin based on epoxy resin. The injection process takes place at elevated temperature, for example, about 180 ° C. The contacts, so the terminal connections 10 with plug contact elements 12 and connecting them, pin-like extensions 11 are embedded in this injection process with the terminal connections 10 at the outside and the plug contact elements 12 at protrude the inside. In the support part itself thus only the pin-like extensions 11 are embedded.
The potting compound used is selected so that an adapted to the metallic base frame part 8 and the metallic, pin-like extensions 11 coefficient of thermal expansion is present. However, in order to achieve a secure, pressure-tight seal under virtually all conditions, an elastic seal, in the exemplary embodiment in the form of an O-ring 20, is used in the connection region between the base frame part 8 and the carrier part 7 ( Figure 3 ). In addition, form-fitting, interlocking, in particular circumferential profilings 21 in the form of annular grooves and projections are provided in this connection region. As a result, the support member 7 is additionally secured in the axial direction.

Die stiftartigen Verlängerungen 11 sind, wie in Fig. 3 gezeigt, mit Ringnuten 22 oder dergleichen Profilierungen, gegebenenfalls auch mit Rändelungen zur Oberflächenvergrößerung versehen, um eine verbesserte Abdichtung zu erreichen.The pin-like extensions 11 are, as in Fig. 3 shown, provided with annular grooves 22 or the like profiles, possibly also with knurls for increasing the surface area in order to achieve an improved seal.

Wie gut in Fig. 1 und 3 erkennbar, sind die Klemmanschlüsse 10 gruppenweise in zueinander versetzten Ebenen angeordnet. Im Ausführungsbeispiel sind dabei drei zueinander versetzte Ebenen vorgesehen. Auch die mit den Klemmanschlüssen 10 verbundenen, innenseitigen Steckkontaktelemente 12 sind entsprechend den Klemmanschlüssen 10 versetzt und dazu passend auch die Gegensteckkontaktelemente 13, die in dem Halter 14 befestigt sind. Die Staffelung in mehreren treppenförmigen Ebenen ermöglicht bei kompaktem Aufbau die Einhaltung der vorgeschriebenen Luft- und Kriechstrecken auch bei radial vergleichsweise geringen Abständen der einzelnen Kontakte. So lassen sich auf vergleichsweise engem Raum eine Vielzahl von elektrischen Kontakten mit Klemmanschlüssen 10 anordnen, wobei im Ausführungsbeispiel 42 solcher Klemmanschlüsse 10 vorgesehen sind (Fig. 2).
Die einzelnen Klemmanschlüsse 10 sind durch sie umgrenzende Wände 26 gegeneinander abgeschirmt.How good in Fig. 1 and 3 recognizable, the terminal connections 10 are arranged in groups in mutually offset planes. In the embodiment, three mutually offset planes are provided. Also connected to the terminal connections 10, inside plug contact elements 12 are offset according to the terminal connections 10 and to match the mating plug contact elements 13 which are mounted in the holder 14. The staggering in several staircase-shaped levels allows for compact design compliance with the prescribed clearances and creepage distances even at radially comparatively small distances of the individual contacts. Thus, a relatively large number of electrical contacts can be arranged with clamping connections 10, wherein in the exemplary embodiment 42 such clamping connections 10 are provided (FIG. Fig. 2 ).
The individual terminal connections 10 are shielded from each other by walls 26 bordering one another.

Erwähnt sei noch, dass das Grundrahmenteil 8 aus Metall, vorzugsweise aus Aluminiumdruckguss besteht. Es weist an seinen Enden jeweils Anschlussflansche 23, 24 auf, über die Verbindungen einerseits mit dem Gehäuseteil 2 und andererseits mit dem Abschlussdeckel 9 möglich sind. Auch im Bereich dieser Verbindungen sind O-Ring-Abdichtungen vorgesehen.It should be mentioned that the base frame part 8 made of metal, preferably made of die-cast aluminum. It has at its ends in each case connecting flanges 23, 24, via the connections on the one hand with the housing part 2 and on the other hand with the end cover 9 are possible. Also in the area of these compounds O-ring seals are provided.

Claims (14)

  1. Apparatus having an explosionproof housing, wherein a pressuretight separating wall with sealed channels for electrical cables is provided between a housing interior and an outer connecting area (5), and wherein electrical connections, for supply lines are located in the outer connecting area (5), which are in the form of terminal connections (10) for attachable supply lines fed in from outside, a mount part (7) being provided for the terminal connections (10), which are connected to pin-like extensions (11) and thus pass through the separating wall (6), and wherein mating plug contact elements (13) for making contact with the pin-like extensions (11) are provided in the interior, characterised in that the apparatus is an actuator (1) for controlling fittings, in that the mount part (7) itself forms the separating wall (6) and in that the terminal connections (10) connected to the mount part (7), together with the extensions (11) and plug contact elements (12) provided thereon, are arranged in mutually offset layers and in the interior the mating plug contact elements (13) are arranged in layers that are offset in a complementary manner with respect thereto.
  2. Apparatus according to claim 1, characterised in that the mount part (7) is inserted in a tubular base frame part (8) which, as a built-in part, is inserted between the housing (2) and an outer closure cover (9) which surrounds the connecting area (5).
  3. Apparatus according to claim 2, characterised in that the mount part (7) is formed from a plastic injection-moulded part and is connected in a sealed manner to the base frame part (8) by injection moulding, and in that the terminal connections (10) are embedded in the mount part (7), sealed by injection moulding, together with the plug contact elements (12) on the pin-like extensions (11) which are located in between.
  4. Apparatus according to claim 2 or 3, characterised in that the base frame part (8) is composed of metal and is preferably an aluminium casting, which has connecting flanges with holders for sealing means at its connecting ends.
  5. Apparatus according to one of claims 1 to 4, characterised in that a holder (14) is provided for the mating plug contact elements (13), and has receptacles (25), which are arranged such that they match the plug contact elements (12) on the mount part (7) for the mating plug contact elements (13) which can preferably be fixed in them.
  6. Apparatus according to claim 2 or 5, characterised in that the base frame part (8) and the holder (14) have guides for joining the parts together in the correct orientation, and in that at least one groove (15) is preferably provided in the base frame part (8), and a matching projection (16) is preferably provided on the holder (14).
  7. Apparatus according to claim 2 or 5 or 6, characterised in that a locking element, preferably a locking ring (18) which engages in an annular groove (17) in the base frame part (8), is provided in the axial insertion direction in order to secure the holder (14) in the correct position for the mating plug contact elements (13).
  8. Actuator for controlling fittings according to one of claims 1 to 7, characterised in that the plug contact elements (12) on the mount part (7) are arranged in groups in mutually offset layers.
  9. Apparatus according to one of claims 5 to 8, characterised in that the plug contact elements (12) on the mount part (7) are bushings and the mating plug contact elements (13) on the holder (14) are plugs that can be inserted into them.
  10. Apparatus according to one of claims 5 to 9, characterised in that the mount part (7) and the holder (14) are designed to accommodate a large number of plug contact elements (12) or mating plug contact elements (13), respectively, for example for more than 40 contact elements in each case.
  11. Apparatus according to one of claims 2 to 10, characterised in that the material for the base frame part (8), the material for the mount part (7) which is injection moulded in it, and the material for the pin-like extensions (11) which are embedded in the mount part have approximately the same thermal coefficient of expansion, matched to one another.
  12. Apparatus according to one of claims 2 to 11, characterised in that profiles (21) which are in particular circumferential and engage in one another in an interlocking manner, and which are preferably in the form of annular grooves and projections, are provided in the connecting area between the base frame part (8) and the mount part (7).
  13. Apparatus according to one of claims 2 to 12, characterised in that an elastic seal, preferably at least one O-ring (20) is used to produce in particular a pressure-resistant seal in the connecting area between the base frame part (8) and the mount part (7).
  14. Apparatus according to one of claims 1 to 13, characterised in that the pin-like extensions (11) are provided with annular grooves (22) or similar profiles, possibly with knurling in order to enlarge the surface area.
EP01997866A 2000-11-23 2001-11-17 Actuator for controlling fittings Expired - Lifetime EP1336228B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10058107 2000-11-23
DE10058107A DE10058107A1 (en) 2000-11-23 2000-11-23 electrical appliance
PCT/EP2001/013293 WO2002043190A1 (en) 2000-11-23 2001-11-17 Actuator for controlling fittings

Publications (2)

Publication Number Publication Date
EP1336228A1 EP1336228A1 (en) 2003-08-20
EP1336228B1 true EP1336228B1 (en) 2008-06-25

Family

ID=7664347

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01997866A Expired - Lifetime EP1336228B1 (en) 2000-11-23 2001-11-17 Actuator for controlling fittings

Country Status (9)

Country Link
EP (1) EP1336228B1 (en)
AT (1) ATE399377T1 (en)
AU (1) AU2002217041A1 (en)
DE (2) DE10058107A1 (en)
DK (1) DK1336228T3 (en)
EA (1) EA004839B1 (en)
ES (1) ES2306741T3 (en)
WO (1) WO2002043190A1 (en)
ZA (1) ZA200303395B (en)

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DE202009004983U1 (en) * 2009-07-03 2010-11-25 Rema Lipprandt Gmbh & Co. Kg Electrical connector
DE102020125254A1 (en) 2020-09-28 2022-03-31 Krohne Messtechnik Gmbh Housing for an electronic field device, connection implementation and method

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Publication number Priority date Publication date Assignee Title
DE10317181B4 (en) * 2003-04-15 2006-05-24 Alexander Schischek Drive, especially actuator and control drive, for flaps and valves
EP1808878B1 (en) 2006-01-11 2008-08-20 Siemens Aktiengesellschaft Electrical device with load circuit switching in an explosive environment
DE102021131953B3 (en) * 2021-12-03 2023-05-17 Auma Riester Gmbh & Co. Kg Electronic device and corresponding series

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DE3507525C1 (en) * 1985-03-04 1986-09-25 Schulte-Elektrotechnik GmbH & Co KG, 5880 Lüdenscheid Electrical device plug
DE3639485A1 (en) * 1986-11-18 1988-05-26 Karl Kapfer Flameproof (explosion protected, explosion-proof) electrical apparatus
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DE9413463U1 (en) * 1994-08-20 1994-11-03 Gisma Steckverbinder GmbH, 24539 Neumünster Device for connecting a cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009004983U1 (en) * 2009-07-03 2010-11-25 Rema Lipprandt Gmbh & Co. Kg Electrical connector
DE102020125254A1 (en) 2020-09-28 2022-03-31 Krohne Messtechnik Gmbh Housing for an electronic field device, connection implementation and method
DE102020125254B4 (en) 2020-09-28 2022-08-11 Krohne Messtechnik Gmbh Housing for an electronic field device and connection bushing

Also Published As

Publication number Publication date
EA200300598A1 (en) 2003-10-30
ES2306741T3 (en) 2008-11-16
EA004839B1 (en) 2004-08-26
ZA200303395B (en) 2004-03-08
AU2002217041A1 (en) 2002-06-03
DE10058107A1 (en) 2002-06-06
DK1336228T3 (en) 2008-10-27
WO2002043190A1 (en) 2002-05-30
DE50114055D1 (en) 2008-08-07
EP1336228A1 (en) 2003-08-20
ATE399377T1 (en) 2008-07-15

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