EP1535371B1 - Lead-through terminal - Google Patents

Lead-through terminal Download PDF

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Publication number
EP1535371B1
EP1535371B1 EP03735238A EP03735238A EP1535371B1 EP 1535371 B1 EP1535371 B1 EP 1535371B1 EP 03735238 A EP03735238 A EP 03735238A EP 03735238 A EP03735238 A EP 03735238A EP 1535371 B1 EP1535371 B1 EP 1535371B1
Authority
EP
European Patent Office
Prior art keywords
terminal
lead
casing
terminal according
housing
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
EP03735238A
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German (de)
French (fr)
Other versions
EP1535371A1 (en
Inventor
Peter Monte
Alex RÖSCH
Felix Fuchs
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.)
Schaffner EMV AG
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Schaffner EMV AG
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Publication of EP1535371A1 publication Critical patent/EP1535371A1/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
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel
    • H01R13/741—Means for mounting coupling parts in openings of a panel using snap fastening means
    • H01R13/745—Means for mounting coupling parts in openings of a panel using snap fastening means separate from the housing
    • 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
    • H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
    • H01R13/74—Means for mounting coupling parts in openings of a panel
    • H01R13/741—Means for mounting coupling parts in openings of a panel using snap fastening means
    • H01R13/743—Means for mounting coupling parts in openings of a panel using snap fastening means integral with the housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw

Definitions

  • the present invention relates to a lead-through terminal for carrying out at least one electrical line through a housing wall.
  • Feed-through terminals are mainly used in electrical devices with housings and serve to pass one or more lines through the housing wall.
  • Lead-through terminals generally have a terminal housing consisting of insulating material, at least one arranged in the terminal housing or protruding from the terminal housing, metallicalthoughleiteran gleichSystem and at least one partly arranged in the terminal housing, partly protruding from the terminal housing, electrically connected to said at least one outer conductor terminal body, metallic inner conductor terminal body. They are fastened to the housing wall such that a body region of the terminal housing with the outer conductor connection body lies outside the housing, while a foot region of the terminal housing with the inner conductor connection body is located inside the housing.
  • the outer conductor connection which is accessible from outside the housing, is often designed as a screw connection body, while the inner conductor connection body, which serves to connect to components of the electrical device inside the housing, generally designed as a pin - solder terminal, blade terminal, winding terminal - is executed.
  • Other embodiments are also possible.
  • bushing terminals have housings that basically consist of two main parts.
  • the first part of the terminal housing is partially guided from the outside through an opening in the housing wall, while a second part is guided from the inside through the opening and secured to the first part.
  • the externally guided part may, for example, have a thread, wherein the inner part is an adapted nut.
  • Other embodiments for the connection of both parts of the terminal housing are known, such as grids, clips, etc.
  • the utility model registration DE 1 971 109 U discloses a feed-through terminal according to the preamble of claim 1.
  • An object of the invention is therefore to propose a bushing clamp, which can be easily and safely fastened from a single side into a housing wall.
  • Another object of the invention is to propose a feed-through terminal which can be stably fixed.
  • a lead-through terminal with a terminal housing consisting of insulating material, at least one arranged in the terminal housing or protruding from the terminal housing, metallicmentsleiteran gleichSystem and at least one partially arranged in the terminal housing, partly protruding from the terminal housing, electrically connected to said at least one outer conductor terminal body, metallic inner conductor connecting body, wherein the Terminal housing in an opening of a housing wall can be elastically fastened only from one side with fastening elements integrated in the terminal housing
  • the lead-through terminal is attached to the outside of the housing wall of an electrical device, without it being necessary to attach further fastening means within the housing.
  • FIG. 1 illustrates a lead-through terminal according to a preferred embodiment of the invention. All elements of the feedthrough terminal are at least partially disposed in a terminal housing 1 made of insulating material. In the head region 12 of the terminal housing 1, an outer conductor connecting body 3 is arranged (shown in Figure 2). From the Foot portion 11 protrudes an inner conductor connecting body 4 out. Wedges 21 spring-loaded from both sides of the foot portion 11 and serve to attach the feed-through terminal, for example, on the housing wall of an electrical device.
  • the terminal housing 1 is formed of two halves, which are held together with snap connections.
  • Figure 2 shows an open feed-through terminal.
  • holes 18 On the edge of the illustrated half 10 of the terminal housing 1 are holes 18 which correspond exactly to pins on the other half of the terminal housing 1, not shown, and serve the snap connections.
  • the body part 12 with the outer conductor body 3 lies essentially entirely on the outside of the housing wall 9, while the foot part 11 with the protruding inner conductor connection body 4 is arranged substantially entirely on the inside of the housing wall 9 is.
  • the outer conductor connection body 3 and the inner conductor connection body 4 are electrically connected.
  • the outer conductor connection body 3 is preferably designed as a screw connection body.
  • the outer conductor connection body 3 is accessible via an access opening 13 in the terminal housing for insertion of an electrical conductor, not shown, and via an actuating opening 130 in the terminal housing for insertion of actuating tools, not shown.
  • the inner conductor connecting body 4 is preferably designed as a connecting pin. On the protruding from the terminal housing end of the terminal pin 4, for example, an unillustrated electrical conductor can be soldered.
  • the terminal pin 4 extends into the screw terminal body 3.
  • this conductor is printed against the end of the terminal pin 4. The electrical contact between the connection bodies 3 and 4, or between the corresponding conductors, not shown, is thus secured within the feedthrough terminal.
  • the fasteners which serve to secure the lead-through terminal to the housing wall 9, consist of two wedges 21, which partially engage in the foot region of the terminal housing.
  • the wedges 21 are elastically connected via spring-like connecting elements 22 with a bolt 2.
  • the bolt 2 comprises the connecting pin 4 and is guided on the guide rails 123 on the inner sides of the terminal housing.
  • the opening in the bolt 2 is chosen to be large enough that no heat transfer from the terminal pin 4 to the latch 2 can take place when, for example, an electrical conductor, not shown, is soldered onto the connecting pin 4.
  • On both sides of the bolt 2 are two rasters 23, which cooperate with corresponding rasters on the guide rails 123 and serve to lock the wedges 21 when the bolt 2 is moved in the direction of the wedges 21.
  • FIG. 4 shows a detail of these screens.
  • the lead-through terminal according to the preferred embodiment of the invention is attached to the housing wall 9 from one side only, which is a significant advantage over prior art lead-through terminals, especially when the inside of the housing wall 9 is poorly accessible.
  • the foot region 11 is inserted through a suitable opening in the housing wall 9 through until the head part 12 comes to rest on the housing wall 9.
  • the lead-through terminal is then already attached to the housing wall, but is not locked.
  • the feedthrough clamp is locked to the housing wall 9 by being pressed externally via the access opening 13 with a tool, for example a special tool, onto the latch 2 so as to move in the direction of the keys 21 along the guide rails 123 ,
  • the rasters 23 of the bolt 2 then work with the corresponding rasters on the guide rails 123 of the terminal housing with.
  • the angle of the surfaces coming into contact was chosen so that they hold self-locking in the lock. Thanks to this angle, which is shown in detail in Figure 3, the wedges 21 are moved during this locking in the direction of the inside of the housing wall 9. This movement of the wedges 21 allows the attachment of the same lead-through terminal to housings with different wall thicknesses.
  • the steps of the grids 23 and the grids on the guide rails 123 are preferably to be kept as small as possible, so that the distance between the wedges 21 and the head part 12 can be adapted as accurately as possible to the thickness of the housing wall 9.
  • the angle between the bolt 2 and the wedges 21 leads to a reduction of the steps of the grids 23 and the grids on the guide rails 123.
  • the grids 23 are preferably offset in pairs by half a step ( Figure 5) , Thus, the fineness of this adjustment can be doubled compared to the fineness achievable with the smallest possible step.
  • the fastening elements 21 are preferably located on the furthest sides of the foot part. Thanks to this construction, the leverage on the feed-through terminal of a pressure on the terminal casing 1, for example, while screwing an external conductor in the screw terminal body 3 with the screw 30, is very small.
  • the terminal pin 4 is not firmly fixed in the terminal housing, as long as it is not blocked in the screw terminal body 3. Therefore, it has on at least one side of a grid 41, which cooperates with pins 141 in the terminal housing ( Figure 8) to avoid that it undesirably falls out of the terminal housing, either during assembly of the feed-through terminal on the housing wall 9 or during transport not yet connected electrical device.
  • This construction has the advantage that the terminal pin 4 can be inserted into the terminal housing 1 only after the attachment of the lead-through terminal to the housing wall 9.
  • the corresponding conductor to the electrical device can be soldered outside the housing on the pin 4 and only then connected to the already mounted feedthrough terminal by the pin 4 is inserted into the terminal housing 1.
  • the soldering process is therefore carried out under optimal conditions outside the housing in which the available space is usually too low.
  • the pin 4 may also be used a conductor connection of the electrical device with adapted form directly into the terminal housing 1.
  • the housing After installation of the electrical device in its housing sometimes the housing is filled with a potting compound to prevent unwanted aging of the elements of the device. This is often the case for electrical filters, for example. Therefore, the feed-through terminal must be tight.
  • This seal is secured in the preferred embodiment of the inventive feedthrough terminal by integrated in the terminal housing 1 lips 14 around the pin 4 ( Figure 6).
  • the distance between the lips 14 is slightly smaller than the corresponding dimension of the terminal pin 4. Since the lips next to the pin 4 are fine, they are also slightly elastic. They are thus printed sufficiently against the terminal pin 4 to ensure a good seal of the terminal housing from the interior of the housing.
  • the lips 14 serve in addition to the extension of the not shown creepage path between the pins of two possibly adjacent to each other on the same housing wall mounted feedthrough terminals. Thanks to the extension of this electrical creepage so the permissible voltage difference between the pins of two adjacent feedthrough terminals is increased.
  • FIG. 7 shows a detail of the foot part 11. It can be seen from this figure that the foot part 12 has grooves 16 in the region between the lips 14 and the body part 12. These grooves 16 are used to extend the electrical creepage 160 between the conductive, preferably metallic pin 4 and possibly also metallic on the figure 7 not With these grooves 16, the allowable voltage difference between the pin 4 and the housing wall is greater than in a lead-through terminal with the same dimensions but no grooves.
  • the feed-through terminal serves to carry out a single electrical line.
  • feedthrough terminals with several parallel lines can be realized in the same way.
  • the fastening elements are located on the foot part of the terminal housing, in which the inner conductor connecting body is partially arranged.
  • the fasteners can also engage from another part of the terminal housing, such as from the surface of the head part, which comes with the housing wall to the plant.
  • this embodiment would possibly require additional openings in the housing wall for the fasteners.
  • inner and outer conductor connection bodies can also be chosen very differently.
  • both screw connection body may well be.

Abstract

Lead-through terminal with a terminal casing ( 1 ) made of insulating material, at least one metallic outer conductor connecting element ( 3 ) arranged in the terminal casing ( 1 ) or protruding out of the terminal casing ( 1 ) and at least one metallic inner conductor connecting element ( 4 ) partly arranged in the terminal casing ( 1 ) and partly protruding out of the terminal casing ( 1 ), connected electrically with said at least one outer conductor connecting element ( 3 ). The terminal casing ( 1 ) can be fastened elastically in an opening of a housing wall ( 9 ) or such from one side only with fastening elements ( 21 ) integrated in said terminal casing ( 1 ). Thanks to this construction, the lead-through terminal can be fastened for example from outside to the housing wall ( 9 ) of an electrical apparatus without it being necessary to provide further fastening means inside the housing.

Description

Die vorliegende Erfindung betrifft eine Durchführungsklemme zur Durchführung mindestens einer elektrischen Leitung durch eine Gehäusewand.The present invention relates to a lead-through terminal for carrying out at least one electrical line through a housing wall.

Durchführungsklemmen werden hauptsächlich bei elektrischen Geräten mit Gehäusen eingesetzt und dienen der Durchführung einer oder mehreren Leitungen durch die Gehäusewand. Durchführungsklemmen haben in der Regel ein aus Isolierstoff bestehendes Klemmengehäuse, mindestens einen im Klemmengehäuse angeordneten oder aus dem Klemmengehäuse herausragenden, metallischen Aussenleiteranschlusskörper und mindestens einen teils im Klemmengehäuse angeordneten, teils aus dem Klemmengehäuse herausragenden, mit dem besagtem mindestens einem Aussenleiteranschlusskörper elektrisch verbundenen, metallischen Innenleiteranschlusskörper. Sie werden an der Gehäusewand so befestigt, dass ein Körperbereich des Klemmengehäuses mit dem Aussenleiteranschlusskörper ausserhalb des Gehäuses liegt, während ein Fussbereich des Klemmengehäuses mit dem Innenleiteranschlusskörper sich innerhalb des Gehäuses befindet.Feed-through terminals are mainly used in electrical devices with housings and serve to pass one or more lines through the housing wall. Lead-through terminals generally have a terminal housing consisting of insulating material, at least one arranged in the terminal housing or protruding from the terminal housing, metallic Außenleiteranschlusskörper and at least one partly arranged in the terminal housing, partly protruding from the terminal housing, electrically connected to said at least one outer conductor terminal body, metallic inner conductor terminal body. They are fastened to the housing wall such that a body region of the terminal housing with the outer conductor connection body lies outside the housing, while a foot region of the terminal housing with the inner conductor connection body is located inside the housing.

Der Aussenleiteranschluss, der von ausserhalb des Gehäuses her zugänglich ist, ist häufig als Schraubanschlusskörper ausgeführt, während der Innenleiteranschlusskörper, welcher der Verbindung mit Bauelementen des elektrischen Gerätes im Inneren des Gehäuses dient, generell als Anschlussstift - Lötanschluss, Flachsteckanschluss, Wickelanschluss - ausgeführt ist. Andere Ausführungsformen sind aber auch möglich.The outer conductor connection, which is accessible from outside the housing, is often designed as a screw connection body, while the inner conductor connection body, which serves to connect to components of the electrical device inside the housing, generally designed as a pin - solder terminal, blade terminal, winding terminal - is executed. Other embodiments are also possible.

Aus dem Stand der Technik sind verschiedene Ausführungsformen von Durchführungsklemmen und insbesondere von Befestigungsmitteln für Durchführungsklemmen bekannt.From the prior art, various embodiments of lead-through terminals and in particular of fastening means for lead-through terminals are known.

Sämtliche Durchführungsklemmen werden zum Beispiel mit Hilfe von Schrauben und Muttern an der Gehäusewand des elektrischen Gerätes befestigt. Solche Befestigungsmitteln haben aber den Nachteil, dass jede Schraube eine zusätzliche Öffnung in der Gehäusewand benötigt und dass das Klemmengehäuse gross genug sein muss, um den Schrauben genug Platz zu sichern.All lead-through terminals are fastened, for example with the aid of screws and nuts on the housing wall of the electrical device. But such fasteners have the disadvantage that each screw requires an additional opening in the housing wall and that Terminal housing must be large enough to secure enough space for the screws.

Andere Durchführungsklemmen haben Gehäuse, die grundsätzlich aus zwei Haupteilen bestehen. Der erste Teil des Klemmengehäuses wird von aussen durch eine Öffnung in der Gehäusewand teilweise geführt, während ein zweiter Teil von innen durch die Öffnung geführt wird und mit dem ersten Teil befestigt wird. Der von aussen geführte Teil kann zum Beispiel eine Gewinde aufweisen, wobei der innere Teil eine adaptierte Mutter ist. Weitere Ausführungsformen für die Verbindung beider Teile des Klemmengehäuses sind bekannt, wie zum Beispiel Rasterungen, Clips, usw.Other bushing terminals have housings that basically consist of two main parts. The first part of the terminal housing is partially guided from the outside through an opening in the housing wall, while a second part is guided from the inside through the opening and secured to the first part. The externally guided part may, for example, have a thread, wherein the inner part is an adapted nut. Other embodiments for the connection of both parts of the terminal housing are known, such as grids, clips, etc.

Alle oben erwähnte Durchführungsklemmen aus dem Stand der Technik weisen den wesentlichen Nachteil auf, dass sie von aussen und von innen an der Gehäusewand befestigt werden müssen, was schwierig oder gar unmöglich wird, wenn der Platz innerhalb des Gehäuses zu gering ist.All of the above-mentioned bushing clamps of the prior art have the significant disadvantage that they must be attached from the outside and from the inside to the housing wall, which is difficult or even impossible if the space inside the housing is too small.

Die Gebrauchsmuster anmeldung DE 1 971 109 U offenbart eine Durchführungsklemme gemäß dem Oberbegriff des Anspruchs 1.The utility model registration DE 1 971 109 U discloses a feed-through terminal according to the preamble of claim 1.

Ein Ziel der Erfindung ist es also, eine Durchführungsklemme vorzuschlagen, die einfach und sicher von einer einzigen Seite her in eine Gehäusewand befestigbar ist.An object of the invention is therefore to propose a bushing clamp, which can be easily and safely fastened from a single side into a housing wall.

Ein weiteres Ziel der Erfindung ist es, eine Durchführungsklemme vorzuschlagen, die stabil befestigt werden kann.Another object of the invention is to propose a feed-through terminal which can be stably fixed.

Diese Ziele werden durch eine Durchführungsklemme erreicht, welche die Merkmale des ersten unabhängigen Anspruches aufweist. Weitere vorteilhafte Ausführungsformen gehen ausserdem aus den abhängigen Ansprüchen und der Beschreibung hervor.These objects are achieved by a feed-through terminal having the features of the first independent claim. Further advantageous embodiments are also evident from the dependent claims and the description.

Erreicht werden diese Ziele durch eine Durchführungsklemme mit einem aus Isolierstoff bestehenden Klemmengehäuse, mindestens einem im Klemmengehäuse angeordneten oder aus dem Klemmengehäuse herausragenden, metallischen Aussenleiteranschlusskörper und mindestens einem teils im Klemmengehäuse angeordneten, teils aus dem Klemmengehäuse herausragenden, mit dem besagten mindestens einem Aussenleiteranschlusskörper elektrisch verbundenen, metallischen Innenleiteranschlusskörper, wobei das Klemmengehäuse in einer Öffnung einer Gehäusewand nur von einer Seite her mit im Klemmengehäuse integrierten Befestigungselementen elastisch befestigbar ist Gemäß der Erfindung wird die Durchführungsklemme von aussen an der Gehäusewand eines elektrischen Gerätes befestigt, ohne dass es nötig ist, weitere Befestigungsmittel innerhalb des Gehäuses anzubringen.These objects are achieved by a lead-through terminal with a terminal housing consisting of insulating material, at least one arranged in the terminal housing or protruding from the terminal housing, metallic Außenleiteranschlusskörper and at least one partially arranged in the terminal housing, partly protruding from the terminal housing, electrically connected to said at least one outer conductor terminal body, metallic inner conductor connecting body, wherein the Terminal housing in an opening of a housing wall can be elastically fastened only from one side with fastening elements integrated in the terminal housing According to the invention, the lead-through terminal is attached to the outside of the housing wall of an electrical device, without it being necessary to attach further fastening means within the housing.

Die Erfindung wird anhand der Beschreibung einer bevorzugten Ausführungsform und mit Hilfe der Figuren 1 bis 8 besser verstanden.

  • Figur 1 ist eine Profilansicht einer Durchführungsklemme gemäss einer bevorzugten Ausführungsform der Erfindung.
  • Figur 2 ist eine Perspektivansicht einer offenen Durchführungsklemme gemäss einer bevorzugten Ausführungsform der Erfindung.
  • Figur 3 zeigt ein Detail der Befestigungselemente im Klemmengehäuse.
  • Figur 4 ist ein Detail der Rasterungen innerhalb der Durchführungsklemme.
  • Figur 5 zeigt die Verschiebung der Rasterungen des Riegels.
  • Figur 6 ist ein Detail der Abdichtungsmittel des Klemmengehäuses.
  • Figur 7 zeigt den Kriechweg auf dem Fussteil des Klemmengehäuses.
  • Figur 8 zeigt die Rasterung zur Haltung des Innenanschlusskörpers im Klemmengehäuse.
The invention will be better understood by reference to the description of a preferred embodiment and with reference to Figures 1 to 8.
  • Figure 1 is a profile view of a feedthrough terminal according to a preferred embodiment of the invention.
  • Figure 2 is a perspective view of an open feed-through terminal according to a preferred embodiment of the invention.
  • FIG. 3 shows a detail of the fastening elements in the terminal housing.
  • Figure 4 is a detail of the detents within the feedthrough clamp.
  • Figure 5 shows the displacement of the latches of the bolt.
  • Figure 6 is a detail of the sealing means of the terminal housing.
  • Figure 7 shows the creepage path on the foot part of the terminal housing.
  • Figure 8 shows the grid for holding the inner terminal body in the terminal housing.

Die Figur 1 illustriert eine Durchführungsklemme gemäss einer bevorzugten Ausführungsform der Erfindung. Alle Elemente der Durchführungsklemme sind mindestens teilweise in einem aus Isolierstoff bestehenden Klemmengehäuse 1 angeordnet. Im Kopfbereich 12 des Klemmengehäuses 1 ist ein Aussenleiteranschlusskörper 3 angeordnet (auf der Figur 2 dargestellt). Aus dem Fussbereich 11 ragt ein Innenleiteranschlusskörper 4 heraus. Keile 21 rasten gefedert aus beiden Seiten des Fussbereichs 11 ein und dienen der Befestigung der Durchführungsklemme zum Beispiel an der Gehäusewand eines elektrischen Gerätes.FIG. 1 illustrates a lead-through terminal according to a preferred embodiment of the invention. All elements of the feedthrough terminal are at least partially disposed in a terminal housing 1 made of insulating material. In the head region 12 of the terminal housing 1, an outer conductor connecting body 3 is arranged (shown in Figure 2). From the Foot portion 11 protrudes an inner conductor connecting body 4 out. Wedges 21 spring-loaded from both sides of the foot portion 11 and serve to attach the feed-through terminal, for example, on the housing wall of an electrical device.

Das Klemmengehäuse 1 wird aus zwei Hälften gebildet, die mit Schnappverbindungen zusammengehalten werden. Figur 2 zeigt eine offene Durchführungsklemme. Auf dem Rand der dargestellten Hälfte 10 des Klemmengehäuses 1 befinden sich Löcher 18, die genau Stiften auf der nicht dargestellten anderen Hälfte des Klemmengehäuses 1 entsprechen und der Schnappverbindungen dienen.The terminal housing 1 is formed of two halves, which are held together with snap connections. Figure 2 shows an open feed-through terminal. On the edge of the illustrated half 10 of the terminal housing 1 are holes 18 which correspond exactly to pins on the other half of the terminal housing 1, not shown, and serve the snap connections.

Wenn die Durchführungsklemme an der Gehäusewand 9 eines elektrischen Gerätes befestigt wird, liegt der Körperteil 12 mit dem Aussenleiterkörper 3 im wesentlichen gänzlich auf der Aussenseite der Gehäusewand 9, während der Fussteil 11 mit dem herausragenden Innenleiteranschlusskörper 4 im wesentlichen gänzlich auf der Innenseite der Gehäusewand 9 angeordnet ist. Innerhalb des Klemmengehäuses sind der Aussenleiteranschlusskörper 3 und der Innenleiteranschlusskörper 4 elektrisch verbunden.When the lead-through terminal is fastened to the housing wall 9 of an electrical appliance, the body part 12 with the outer conductor body 3 lies essentially entirely on the outside of the housing wall 9, while the foot part 11 with the protruding inner conductor connection body 4 is arranged substantially entirely on the inside of the housing wall 9 is. Within the terminal housing, the outer conductor connection body 3 and the inner conductor connection body 4 are electrically connected.

Der Aussenleiteranschlusskörper 3 ist vorzugsweise als Schraubanschlusskörper ausgeführt. Der Aussenleiteranschlusskörper 3 ist über eine Zugangsöffnung 13 im Klemmengehäuse zum Einführen eines nicht dargestellten elektrischen Leiters und über eine Betätigungsöffnung 130 im Klemmengehäuse zum Einführen von nicht dargestellten Betätigungswerkzeugen zugänglich.The outer conductor connection body 3 is preferably designed as a screw connection body. The outer conductor connection body 3 is accessible via an access opening 13 in the terminal housing for insertion of an electrical conductor, not shown, and via an actuating opening 130 in the terminal housing for insertion of actuating tools, not shown.

Der Innenleiteranschlusskörper 4 ist vorzugsweise als Anschlussstift ausgeführt. Auf das aus dem Klemmengehäuse herausragenden Ende des Anschlussstifts 4 kann zum Beispiel ein nicht dargestellter elektrischer Leiter gelötet werden.The inner conductor connecting body 4 is preferably designed as a connecting pin. On the protruding from the terminal housing end of the terminal pin 4, for example, an unillustrated electrical conductor can be soldered.

Innerhalb des Klemmengehäuses erstreckt sich der Anschlussstift 4 bis in den Schraubanschlusskörper 3. Wenn die Schraube 30 des Schraubanschlusskörpers 3 geschraubt wird, um den entsprechenden Leiter zu befestigen, wird dieser Leiter gegen das Ende des Anschlussstifts 4 gedruckt. Der elektrische Kontakt zwischen den Anschlusskörpern 3 und 4, beziehungsweise zwischen den entsprechenden nicht dargestellten Leitern, ist somit innerhalb der Durchführungsklemme gesichert.Inside the terminal housing, the terminal pin 4 extends into the screw terminal body 3. When the screw 30 of the screw terminal body 3 is screwed to close the corresponding conductor fasten, this conductor is printed against the end of the terminal pin 4. The electrical contact between the connection bodies 3 and 4, or between the corresponding conductors, not shown, is thus secured within the feedthrough terminal.

Die Befestigungselemente, die der Befestigung der Durchführungsklemme an der Gehäusewand 9 dienen, bestehen aus zwei Keilen 21, die aus dem Fussbereich des Klemmengehäuses teilweise einrasten. Die Keile 21 sind über federartige Verbindungselemente 22 mit einem Riegel 2 elastisch verbunden. Der Riegel 2 umfasst den Anschlussstift 4 und wird an den Führungsschienen 123 auf den Innenseiten des Klemmengehäuses geführt. Die Öffnung im Riegel 2 wird gross genug gewählt, dass kein Wärmeübergang vom Anschlussstift 4 zum Riegel 2 stattfinden kann, wenn zum Beispiel ein nicht dargestellten elektrischen Leiter auf dem Anschlussstift 4 gelötet wird. Auf beiden Seiten des Riegels 2 befinden sich zwei Rasterungen 23, die mit entsprechenden Rasterungen auf den Führungsschienen 123 mitarbeiten und der Verriegelung der Keile 21 dienen, wenn der Riegel 2 in die Richtung der Keile 21 bewegt wird. Figur 4 zeigt ein Detail dieser Rasterungen.The fasteners, which serve to secure the lead-through terminal to the housing wall 9, consist of two wedges 21, which partially engage in the foot region of the terminal housing. The wedges 21 are elastically connected via spring-like connecting elements 22 with a bolt 2. The bolt 2 comprises the connecting pin 4 and is guided on the guide rails 123 on the inner sides of the terminal housing. The opening in the bolt 2 is chosen to be large enough that no heat transfer from the terminal pin 4 to the latch 2 can take place when, for example, an electrical conductor, not shown, is soldered onto the connecting pin 4. On both sides of the bolt 2 are two rasters 23, which cooperate with corresponding rasters on the guide rails 123 and serve to lock the wedges 21 when the bolt 2 is moved in the direction of the wedges 21. FIG. 4 shows a detail of these screens.

Die Durchführungsklemme gemäss der bevorzugten Ausführungsform der Erfindung wird nur von einer Seite her an der Gehäusewand 9 befestigt, was einen wesentlichen Vorteil gegenüber Durchführungsklemmen aus dem Stand der Technik darstellt, hauptsächlich wenn die Innenseite der Gehäusewand 9 schlecht erreichbar ist. Der Fussbereich 11 wird durch eine angepasste Öffnung in der Gehäusewand 9 hindurch gesteckt, bis der Kopfteil 12 an der Gehäusewand 9 zur Anlage kommt. Die Keile 21, die elastisch im Klemmengehäuse 1 gehalten werden (Figur 3), federn dann teilweise aus dem Klemmengehäuse 1 aus und gegen die Innenseite der Gehäusewand 9 ein. Die Durchführungsklemme ist dann schon an der Gehäusewand befestigt, ist aber nicht verriegelt.The lead-through terminal according to the preferred embodiment of the invention is attached to the housing wall 9 from one side only, which is a significant advantage over prior art lead-through terminals, especially when the inside of the housing wall 9 is poorly accessible. The foot region 11 is inserted through a suitable opening in the housing wall 9 through until the head part 12 comes to rest on the housing wall 9. The wedges 21, which are elastically held in the terminal housing 1 (FIG. 3), then partly spring out of the terminal housing 1 and against the inside of the housing wall 9. The lead-through terminal is then already attached to the housing wall, but is not locked.

Die Durchführungsklemme wird an der Gehäusewand 9 verriegelt, indem von aussen her über die Zugangsöffnung 13 mit einem Werkzeug, zum Beispiel mit einem speziellen Werkzeug, auf den Riegel 2 gedrückt wird, so dass er sich in die Richtung der Keile 21 entlang den Führungsschienen 123 bewegt. Die Rasterungen 23 des Riegels 2 arbeiten dann mit den entsprechenden Rasterungen auf den Führungsschienen 123 des Klemmengehäuses mit. Beim Riegel 2 und den Keilen 21 wurde der Winkel der miteinander in Kontakt kommenden Flächen so gewählt, dass sie sich bei der Verriegelung selbsthemmend halten. Dank diesem Winkel, der in der Figur 3 detailliert gezeigt wird, werden die Keile 21 während dieser Verriegelung in die Richtung der Innenseite der Gehäusewand 9 bewegt. Diese Bewegung der Keile 21 erlaubt die Befestigung der gleichen Durchführungsklemme an Gehäusen mit verschiedenen Wanddicken.The feedthrough clamp is locked to the housing wall 9 by being pressed externally via the access opening 13 with a tool, for example a special tool, onto the latch 2 so as to move in the direction of the keys 21 along the guide rails 123 , The rasters 23 of the bolt 2 then work with the corresponding rasters on the guide rails 123 of the terminal housing with. When bolt 2 and the wedges 21, the angle of the surfaces coming into contact was chosen so that they hold self-locking in the lock. Thanks to this angle, which is shown in detail in Figure 3, the wedges 21 are moved during this locking in the direction of the inside of the housing wall 9. This movement of the wedges 21 allows the attachment of the same lead-through terminal to housings with different wall thicknesses.

Die Schritte der Rasterungen 23 und der Rasterungen auf den Führungsschienen 123 sind vorzugsweise so klein wie möglich zu halten, damit der Abstand zwischen den Keilen 21 und dem Kopfteil 12 so genau wie möglich an der Dicke der Gehäusewand 9 angepasst werden kann. In der bevorzugten Ausführungsform der Erfindung führt der Winkel zwischen dem Riegel 2 und den Keilen 21 zu einer Untersetzung der Schritte der Rasterungen 23 und der Rasterungen auf den Führungsschienen 123. Zusätzlich sind noch die Rasterungen 23 vorzugsweise paarweise um einen halben Schritt versetzt (Figur 5). Somit kann die Feinheit dieser Anpassung gegenüber die mit dem kleinst möglichen Schritt erreichbare Feinheit noch verdoppelt werden.The steps of the grids 23 and the grids on the guide rails 123 are preferably to be kept as small as possible, so that the distance between the wedges 21 and the head part 12 can be adapted as accurately as possible to the thickness of the housing wall 9. In the preferred embodiment of the invention, the angle between the bolt 2 and the wedges 21 leads to a reduction of the steps of the grids 23 and the grids on the guide rails 123. In addition, the grids 23 are preferably offset in pairs by half a step (Figure 5) , Thus, the fineness of this adjustment can be doubled compared to the fineness achievable with the smallest possible step.

Die Befestigungselemente 21 befinden sich vorzugsweise auf den weitesten Seiten des Fussteils. Dank dieser Konstruktion ist die Hebelwirkung auf der Durchführungsklemme eines Drucks auf dem Klemmengehäuse 1, zum Beispiel während dem Anschrauben eines externen Leiters im Schraubanschlusskörper 3 mit der Schraube 30, sehr klein.The fastening elements 21 are preferably located on the furthest sides of the foot part. Thanks to this construction, the leverage on the feed-through terminal of a pressure on the terminal casing 1, for example, while screwing an external conductor in the screw terminal body 3 with the screw 30, is very small.

In der Durchführungsklemme gemäss der bevorzugten Ausführungsform der Erfindung ist der Anschlussstift 4 nicht fest im Klemmengehäuse befestigt, solange er nicht im Schraubanschlusskörper 3 blockiert wird. Deshalb besitzt er auf mindestens einer Seite eine Rasterung 41, die mit Stiften 141 im Klemmengehäuse mitarbeitet (Figur 8), um zu vermeiden, dass er unerwünscht aus dem Klemmengehäuse fällt, entweder während der Montage der Durchführungsklemme an der Gehäusewand 9 oder während dem Transport des noch nicht angeschlossenen elektrischen Gerätes.In the lead-through terminal according to the preferred embodiment of the invention, the terminal pin 4 is not firmly fixed in the terminal housing, as long as it is not blocked in the screw terminal body 3. Therefore, it has on at least one side of a grid 41, which cooperates with pins 141 in the terminal housing (Figure 8) to avoid that it undesirably falls out of the terminal housing, either during assembly of the feed-through terminal on the housing wall 9 or during transport not yet connected electrical device.

Diese Konstruktion hat den Vorteil, dass der Anschlussstift 4 erst nach der Befestigung der Durchführungsklemme an der Gehäusewand 9 in das Klemmengehäuse 1 hineingesteckt werden kann. Somit kann zum Beispiel der entsprechende Leiter zum elektrischen Gerät noch ausserhalb des Gehäuses auf dem Anschlussstift 4 gelötet werden und erst dann mit der schon montierten Durchführungsklemme verbunden werden, indem der Anschlussstift 4 in das Klemmengehäuse 1 hineingesteckt wird. Der Lötvorgang wird also unter optimalen Bedingungen ausserhalb des Gehäuses, in dem der verfügbare Platz meistens zu gering ist, durchgeführt. Anstelle vom Anschlussstift 4 kann unter Umständen auch einen Leiteranschluss des elektrischen Gerätes mit angepasster Form direkt ins Klemmengehäuse 1 eingesetzt werden.This construction has the advantage that the terminal pin 4 can be inserted into the terminal housing 1 only after the attachment of the lead-through terminal to the housing wall 9. Thus, for example, the corresponding conductor to the electrical device can be soldered outside the housing on the pin 4 and only then connected to the already mounted feedthrough terminal by the pin 4 is inserted into the terminal housing 1. The soldering process is therefore carried out under optimal conditions outside the housing in which the available space is usually too low. Instead of the pin 4 may also be used a conductor connection of the electrical device with adapted form directly into the terminal housing 1.

Nach dem Einbau des elektrischen Gerätes in seinem Gehäuse wird manchmal das Gehäuse mit einer Vergussmasse gefüllt, um unerwünschte Alterungen der Elemente des Gerätes vorzubeugen. Das ist zum Beispiel oft der Fall für elektrische Filter. Deshalb muss die Durchführungsklemme dicht sein. Diese Abdichtung ist in der bevorzugten Ausführungsform der erfinderischen Durchführungsklemme durch im Klemmengehäuse 1 integrierte Lippen 14 um den Anschlussstift 4 gesichert (Figur 6). Der Abstand zwischen den Lippen 14 ist etwas kleiner als das entsprechende Mass des Anschlussstiftes 4. Da die Lippen neben dem Anschlussstift 4 fein sind, sind sie auch leicht elastisch. Sie werden also genügend gegen dem Anschlussstift 4 gedruckt, um eine gute Abdichtung des Klemmengehäuses gegenüber dem Inneren des Gehäuses zu sichern.After installation of the electrical device in its housing sometimes the housing is filled with a potting compound to prevent unwanted aging of the elements of the device. This is often the case for electrical filters, for example. Therefore, the feed-through terminal must be tight. This seal is secured in the preferred embodiment of the inventive feedthrough terminal by integrated in the terminal housing 1 lips 14 around the pin 4 (Figure 6). The distance between the lips 14 is slightly smaller than the corresponding dimension of the terminal pin 4. Since the lips next to the pin 4 are fine, they are also slightly elastic. They are thus printed sufficiently against the terminal pin 4 to ensure a good seal of the terminal housing from the interior of the housing.

Die Lippen 14 dienen zusätzlich zur Verlängerung des nicht dargestellten Kriechweges zwischen den Anschlussstiften von zwei möglicherweise nebeneinander an der gleichen Gehäusewand befestigten Durchführungsklemmen. Dank der Verlängerung dieses elektrischen Kriechweges wird also der zulässige Spannungsunterschied zwischen den Anschlussstiften von zwei benachbarten Durchführungsklemmen erhöht.The lips 14 serve in addition to the extension of the not shown creepage path between the pins of two possibly adjacent to each other on the same housing wall mounted feedthrough terminals. Thanks to the extension of this electrical creepage so the permissible voltage difference between the pins of two adjacent feedthrough terminals is increased.

Figur 7 zeigt ein Detail des Fussteils 11. Aus dieser Figur ist ersichtlich, dass der Fussteil 12 im Bereich zwischen den Lippen 14 und dem Körperteil 12 Rillen 16 aufweist. Diese Rillen 16 dienen zur Verlängerung des elektrischen Kriechweges 160 zwischen dem leitenden, vorzugsweise metallischen Anschlussstift 4 und der möglicherweise auch metallischen auf der Figur 7 nicht dargestellten Gehäusewand 9. Mit dieser Rillen 16 ist der zulässige Spannungsunterschied zwischen dem Anschlussstift 4 und der Gehäusewand grösser als bei einer Durchführungsklemme mit den gleichen Abmessungen aber ohne Rillen.FIG. 7 shows a detail of the foot part 11. It can be seen from this figure that the foot part 12 has grooves 16 in the region between the lips 14 and the body part 12. These grooves 16 are used to extend the electrical creepage 160 between the conductive, preferably metallic pin 4 and possibly also metallic on the figure 7 not With these grooves 16, the allowable voltage difference between the pin 4 and the housing wall is greater than in a lead-through terminal with the same dimensions but no grooves.

In der oben beschriebenen bevorzugten Ausführungsform der Erfindung dient die Durchführungsklemme zur Durchführung einer einzigen elektrischen Leitung. Der Fachmann wird aber verstehen, dass auch Durchführungsklemmen mit mehreren parallelen Leitungen in gleicher Weise realisiert werden können.In the preferred embodiment of the invention described above, the feed-through terminal serves to carry out a single electrical line. The person skilled in the art will understand, however, that feedthrough terminals with several parallel lines can be realized in the same way.

In der bevorzugten Ausführungsform der Erfindung befinden sich die Befestigungselemente auf dem Fussteil des Klemmengehäuses, in dem auch der Innenleiteranschlusskörper teilweise angeordnet ist. Die Befestigungselemente können aber auch aus einem anderen Teil des Klemmengehäuse einrasten, wie zum Beispiel aus der Fläche des Kopfteils, die mit der Gehäusewand zur Anlage kommt. Diese Ausführung würde aber unter Umständen zusätzliche Öffnungen in der Gehäusewand für die Befestigungselemente erfordern.In the preferred embodiment of the invention, the fastening elements are located on the foot part of the terminal housing, in which the inner conductor connecting body is partially arranged. But the fasteners can also engage from another part of the terminal housing, such as from the surface of the head part, which comes with the housing wall to the plant. However, this embodiment would possibly require additional openings in the housing wall for the fasteners.

Der Typ von Innen- und Aussenleiteranschlusskörpern kann auch sehr unterschiedlich gewählt werden. Insbesondere können wohl beide Schraubanschlusskörper sein.The type of inner and outer conductor connection bodies can also be chosen very differently. In particular, both screw connection body may well be.

Claims (15)

  1. Lead-through terminal with a terminal casing (1) made of insulating material, at least one metallic outer conductor connecting element (3) arranged in the terminal casing (1) or protruding out of the terminal casing (1), at least one metallic inner conductor connecting element (4) partly arranged in the terminal casing (1) and partly protruding out of the terminal casing (1), connected electrically with said at least one outer conductor connecting element (3), with the terminal casing being capable of being fastened elastically in an opening of a housing wall (9) from only one side with fastening elements (21) integrated in said terminal casing (1), characterized in that a locking bar (2) is provided for locking said fastening elements (21) in such a manner that said locking bar can be locked from outside.
  2. Lead-through terminal according to claim 1, said lead-through terminal being fastened to said housing wall (9) through holding said terminal casing on the housing wall (9) between said fastening elements (21) and the head part (12) of said terminal casing (1) and the distance between said fastening elements (21) and said head part (12) being adjustable.
  3. Lead-through terminal according to one of the preceding claims, said inner conductor connecting element (4) being capable of being inserted in said terminal casing (1) after said lead-through terminal has been fastened to said housing wall (9).
  4. Lead-through terminal according to the preceding claim, said inner conductor connecting element (4) being a line connection of an electrical apparatus.
  5. Lead-through terminal according to one of the preceding claims, said locking occurring through self-locking between said locking bar (2) and said fastening elements (21).
  6. Lead-through terminal according to one of the preceding claims, the fastening elements (21) lying on the furthest sides of the foot part (11) of said terminal casing (1).
  7. Lead-through terminal according to one of the preceding claims, said fastening elements (21) being capable of being adapted to different thicknesses of said housing wall (9).
  8. Lead-through terminal according to one of the preceding claims, said fastening elements being wedges (21).
  9. Lead-through terminal according to the preceding claim, said wedges (21) latching from said terminal casing (1).
  10. Lead-through terminal according to one of the preceding claims, said fastening elements (21) being connected elastically through spring-loaded connecting elements (22) with said locking bar (2).
  11. Lead-through terminal according to one of the preceding claims, said locking bar (2) having latchings (23).
  12. Lead-through terminal according to the preceding claim, said latchings (23) working together with corresponding latchings inside the terminal casing (1).
  13. Lead-through terminal according to one of the claims 11 or 12, said latchings (23) being shifted in pairs by a half step.
  14. Lead-through terminal according to one of the preceding claims, lips (14) being provided around the opening provided in said terminal casing (1) for said inner conductor connecting element (4) in order to lengthen the creepage distance between said inner conductor connecting element (4) and a neighboring line.
  15. Lead-through terminal according to one of the preceding claims, grooves (16) being provided on said terminal casing (1) in order to lengthen the creepage distance between said inner conductor connecting element (4) and said housing wall (9).
EP03735238A 2002-09-05 2003-07-16 Lead-through terminal Expired - Lifetime EP1535371B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH151602 2002-09-05
CH15162002 2002-09-05
PCT/CH2003/000480 WO2004023606A1 (en) 2002-09-05 2003-07-16 Lead-through terminal

Publications (2)

Publication Number Publication Date
EP1535371A1 EP1535371A1 (en) 2005-06-01
EP1535371B1 true EP1535371B1 (en) 2006-02-01

Family

ID=31954551

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03735238A Expired - Lifetime EP1535371B1 (en) 2002-09-05 2003-07-16 Lead-through terminal

Country Status (7)

Country Link
US (1) US7090526B2 (en)
EP (1) EP1535371B1 (en)
CN (1) CN100355155C (en)
AT (1) ATE317160T1 (en)
AU (1) AU2003236768A1 (en)
DE (1) DE50302346D1 (en)
WO (1) WO2004023606A1 (en)

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Also Published As

Publication number Publication date
ATE317160T1 (en) 2006-02-15
AU2003236768A1 (en) 2004-03-29
DE50302346D1 (en) 2006-04-13
WO2004023606A1 (en) 2004-03-18
CN100355155C (en) 2007-12-12
EP1535371A1 (en) 2005-06-01
CN1679213A (en) 2005-10-05
US7090526B2 (en) 2006-08-15
US20050202718A1 (en) 2005-09-15

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