EP0706194A1 - Protector plug - Google Patents

Protector plug Download PDF

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Publication number
EP0706194A1
EP0706194A1 EP95109298A EP95109298A EP0706194A1 EP 0706194 A1 EP0706194 A1 EP 0706194A1 EP 95109298 A EP95109298 A EP 95109298A EP 95109298 A EP95109298 A EP 95109298A EP 0706194 A1 EP0706194 A1 EP 0706194A1
Authority
EP
European Patent Office
Prior art keywords
spring
slide
housing
circuit board
angled
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.)
Granted
Application number
EP95109298A
Other languages
German (de)
French (fr)
Other versions
EP0706194B1 (en
Inventor
Ralf-Dieter Dipl.-Ing. Busse
Harald Dipl.-Ing. Klein
Johann Dipl.-Ing. Oltmanns
Gerd Dipl.-Ing. Richter
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.)
ADC GmbH
Original Assignee
Krone GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krone GmbH filed Critical Krone GmbH
Priority to SI9530019T priority Critical patent/SI0706194T1/en
Publication of EP0706194A1 publication Critical patent/EP0706194A1/en
Application granted granted Critical
Publication of EP0706194B1 publication Critical patent/EP0706194B1/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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6666—Structural association with built-in electrical component with built-in electronic circuit with built-in overvoltage protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/767—Normally open
    • 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
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6658—Structural association with built-in electrical component with built-in electronic circuit on printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2425—Structural association with built-in components
    • H01R9/2441—Structural association with built-in components with built-in overvoltage protection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/12—Means structurally associated with spark gap for recording operation thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00—Details of spark gaps
    • H01T1/14—Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2425—Structural association with built-in components
    • H01R9/2433—Structural association with built-in components with built-in switch

Definitions

  • the invention relates to a protective plug, in particular an overvoltage protective plug in telecommunication systems according to the preamble of claim 1.
  • the protective plug consists of a housing, the underside of which is formed by a printed circuit board, a surge arrester, a slide, a spring, an earth plate, a signaling lug, a soldering point, which melts when the surge arrester is heated to an inadmissible temperature and causes the slide to move, which in turn causes the Signaling nose to the outside.
  • the invention is therefore based on the object to develop a protective plug for reliable protection against overvoltages, in which the soldering point is under minimal force and which is made up of only a few parts and enables automated production at low cost, and a triggering outside clearly visible.
  • the coarse protection is implemented in a known manner with a surge arrester.
  • the fail-safe mechanism connected to the surge arrester provides thermal protection if the surge arrester is overloaded by short-circuiting the telecommunication wires a, b to earth.
  • This short-circuit mechanism is implemented by a slide, via which a red signaling element on the rear of the connector emerges from the connector in a clearly visible manner when an overvoltage occurs.
  • the fail-safe contact is triggered by a solder molded part.
  • the heating of the surge arrester causes the solder molded part to melt via a welded or clamped baffle.
  • the solder molded part is under a minimal, precisely balanced spring force (pressure force) exerted by the slide, which lies at the limit of the self-locking of the slide. Decoupling of the support surface of the slide largely decouples the molded solder part and the spring force of the slide.
  • the slide which is held by an edge on the housing during operation is released from the edge due to the melting of the solder molded part and the spring travel thus freed.
  • the slide moves due to a compression spring mounted on it, which is supported on an inner wall of the housing.
  • a red plastic part is arranged as a signaling element on the slide so that it is pivoted out of the plug when the slide moves to the rear and clearly shows the triggering.
  • the one-piece housing and only a few built-in parts ensure cheap, automatable manufacture of the connector.
  • the protective plug is provided in particular as an overvoltage protection plug for use in telecommunications systems in connection with terminal strips.
  • the protective plug consists of an outer housing 1, the underside of which is closed off by a printed circuit board 2 with a surge arrester 3 and with fuse elements 26, from a slide 4 with a compression spring 8 and a solder molded part 7, from a signaling element 5 and from a ground plate 27.
  • the protective plug is connected via the ground plate 27 to the ground rail 34 of a terminal block, not shown, and above it to the grounding of the protection system (FIG. 3).
  • FIG. 2 shows a perspective view of the slide 4, which consists of a carrier part 9 and a leaf spring part 14, which are integrally connected to one another via a connection 18.
  • the carrier part 9 has two mutually bent contact wings 10 (FIG. 4), which (none Overvoltage) lie on resting surfaces 28 of the printed circuit board 2 (FIG. 5), which have no electrical contact with the signal path.
  • the contact wings 10 are pushed onto contact surfaces 29 of the printed circuit board 2 by the slide movement (FIG. 5), which lie in the signal path. With this movement, the lines a, b (Fig. 1,3,5) are grounded and the overvoltage is derived.
  • the carrier part 9 contains a receptacle 11 (Fig. 1,4) for the helical spring 8, which is supported on the housing inner wall 31 (Fig. 4) and against whose spring force the slider 4 is inserted into the housing 1 of the protective plug.
  • An electrical connection between the slide 4 and the ground plate 27 and a baffle 6 on the surge arrester 3 is established via a contact surface 12 of the carrier part 9 (FIG. 3), so that the overvoltage can be derived via the ground rail 34 of a terminal block (not shown) and the Surge arrester 3 is constantly connected to ground.
  • a groove 13 at the rear end of the carrier part 9 serves to receive the signaling element 5 (Fig. 1.4).
  • the leaf spring part 14 is formed from a long spring arm 30, at the resilient end 15 of which a web 16 is angled and shaped, and from an angled stop 19 behind the connection 18 of the leaf spring part 14 with the carrier part 9.
  • the web 16 carries the solder molded part 7 and is integral with an angled support surface 17 is provided.
  • the support surface 17 of the slide 4 is supported on an edge 20 of the housing 1 (FIG. 3) in such a way that, in the event of operation, the slide 4 hardly exerts any force on the solder molded part 7, which supports its spring arm 30, due to self-locking forces. Only in the event of an overvoltage, when the solder molded part 7 melts, does the support surface 17 slide off the edge 20 of the housing 1 and the slide 4 moves and causes the voltage dissipation against ground and the signaling of the overvoltage case.
  • the dimensioning of the spring travel of the leaf spring part 14 and thus its contact force for the precisely correct loading of the solder molded part 7 and the dimensioning of the inclined position of the support surface 17 in connection with the edge 20 on the housing 1 are of great importance.
  • the groove 13 of the carrier part 9 serves to pivot the signaling element 5 out of an opening 32 in the housing wall 33 (FIG. 4) when the slide 4 is moved to the rear.
  • the slide 4 has the task of realizing the short circuit and signaling it.
  • the side view of the opened protective plug shows the functional elements of the protective plug in their constructive context.
  • the housing 1 is closed with the circuit board 2 down.
  • the circuit board 2 carries the surge arrester 3 with the attached baffle 6, which connects the surge arrester 3 via the ground plate 27 in the upper part of the housing 1 and via the earth rail 34 of a terminal block, not shown, to earth.
  • the slide 4 is in contact with its contact surface 12 (FIG. 2) via the ground plate 27 with the earth and via the solder molded part 7 with the guide plate 6 of the surge arrester 3.
  • heat is conducted to the solder molded part 7 via the welded-on guide plate 6.
  • the solder molding 7 is under a light, precisely coordinated spring force (pressure force) of the slide 4.
  • the slide 4 used as a fail-safe mechanism and for the optical signaling of an overvoltage is removed from it by the edge 20 on the housing 1 and released by the support surface 17 on the leaf spring part 14 of the slide 4 defined position due to the spring travel when the solder molding 7 melts due to the heating.
  • the slide 4 moves due to the compression spring 8 mounted on it (as already described above), which is supported on the housing inner wall 31 (FIG. 4), backwards, ie away from the location of the surge arrester 3.
  • the one on the slider 4 arranged two contact wings 10 (Fig.4) are pushed by the slide movement from the resting surfaces 28 to two contact surfaces 29 (Fig.5).
  • the contact surfaces 29 are each contact points of the telecommunication conductors a, b.
  • the wires a, b are connected to earth via the contact wings 10 arranged on the slide 4.
  • the surge arrester 3 remains connected to earth in the short-circuited state.
  • the contact is realized via the welded-on guide plate 6 and the ground plate 27 to the earth rail 34 (FIG. 3) of the terminal block (not shown).
  • the earth is additionally connected to the surge arrester 3 via the solder molded part 7 and the guide plate 6.
  • the red signaling element 5 (FIG. 1) is arranged or mounted on the slide 4 such that it is pivoted or rotated out of the plug when the slide 4 moves backwards.
  • a housing-fixed bearing 21 (semicircular inner surface as a bearing) is provided in the housing 1 as a fixed fulcrum for the round outer surface 22 of the signaling element 5, a pin 23 being mounted in the groove 13 of the slide 4 (FIGS. 1.4).
  • solder pads 25 are plated through to the underside of the printed circuit board 2 (FIG. 6).
  • the safety caps are accessible from the outside with measuring tips and serve as measuring tapping points for the individual wires.

Abstract

The device has a housing and circuit board, an overvoltage tapping, a slider (4), a spring, an earth plate and a signalling element. The slider is forced against the housing wall by the spring (8) at a support surface (17) and one edge (20). A shaped solder part (7) is only minimally loaded by the spring force on the slider. The slider is made in one piece of a carrier part with angled contact vanes (10), a spring holder, a contact surface (12) for connecting the overvoltage tapping (3) to earth via an earth plate (27), a groove for holding the signalling element and a spring part (14). The spring part has a long spring arm and is angled at its sprung end to form a bar carrying the shaped solder part (7) and angled support surface (17).

Description

Die Erfindung betrifft einen Schutzstecker, insbesondere einen Überspannungsschutzstecker in Telekommunikationsanlagen gemäß dem Oberbegriff des Anspruches 1.The invention relates to a protective plug, in particular an overvoltage protective plug in telecommunication systems according to the preamble of claim 1.

In der DE 40 26 004 C2 ist bereits ein gattungsgemäßer Schutzstecker beschrieben, der als Stufenschutz mit Meß- und Trennstelle ausgeführt ist. Der Schutzstecker besteht aus einem Gehäuse, dessen Unterseite von einer Leiterplatte gebildet wird, einem Überspannungsableiter, einem Schieber, einer Feder, einem Erdblech, einer Signalisierungsnase, einer Lötstelle, die bei unzulässiger Erwärmung des Überspannungsableiters aufschmilzt und eine Bewegung des Schiebers bewirkt, die wiederum die Signalisierungsnase nach außen zur Anzeige bringt.DE 40 26 004 C2 has already described a generic protective plug which is used as step protection Measuring and separation point is executed. The protective plug consists of a housing, the underside of which is formed by a printed circuit board, a surge arrester, a slide, a spring, an earth plate, a signaling lug, a soldering point, which melts when the surge arrester is heated to an inadmissible temperature and causes the slide to move, which in turn causes the Signaling nose to the outside.

Nachteilig ist bei diesem bekannten Schutzstecker die große Anzahl von Einzelteilen, die eine billige, automatisierbare Fertigung erschweren sowie die Belastung der Lötstelle mit der Federkraft der vorgespannten Schraubenfeder, die ein Fließen des Lots bewirken kann.The disadvantages of this known protective plug are the large number of individual parts, which complicate cheap, automatable manufacture, and the load on the soldering point with the spring force of the prestressed coil spring, which can cause the solder to flow.

Der Erfindung liegt von daher die Aufgabe zugrunde, einen Schutzstecker für den zuverlässigen Schutz vor Überspannungen zu entwickeln, bei dem die Lötstelle unter minimaler Krafteinwirkung steht und der nur aus wenigen Teilen aufgebaut ist und eine automatisierbare Fertigung mit geringen Kosten ermöglicht, und ein Auslösen außen deutlich sichtbar anzeigt.The invention is therefore based on the object to develop a protective plug for reliable protection against overvoltages, in which the soldering point is under minimal force and which is made up of only a few parts and enables automated production at low cost, and a triggering outside clearly visible.

Die Lösung der Aufgabe ergibt sich aus den kennzeichnenden Merkmalen des Anspruches 1.The solution to the problem results from the characterizing features of claim 1.

Der nach der Erfindung realisierte Schutzstecker erfüllt mit wenigen Elementen die Funktionen

  • Grobschutz
  • Fail-Safe mit optischer Signalisierung
  • Stromschutz
  • Meßstelle.
The protective plug realized according to the invention fulfills the functions with a few elements
  • Coarse protection
  • Fail-safe with optical signaling
  • Power protection
  • Measuring point.

Der Grobschutz wird in bekannter Weise mit einem Überspannungsableiter realisiert. Der mit dem Überspannungsableiter verbundene Fail-Safe-Mechanismus realisiert einen Thermoschutz bei Überlastung des Überspannungsableiters, indem er die Fernmeldeadern a,b gegen Erde kurzschließt. Dieser Kurzschluß-Mechanismus wird durch einen Schieber realisiert, über den an der Rückseite des Steckers ein rotes Signalisierelement deutlich sichtbar aus dem Stecker hervortritt, wenn ein Überspannungsfall auftritt.The coarse protection is implemented in a known manner with a surge arrester. The fail-safe mechanism connected to the surge arrester provides thermal protection if the surge arrester is overloaded by short-circuiting the telecommunication wires a, b to earth. This short-circuit mechanism is implemented by a slide, via which a red signaling element on the rear of the connector emerges from the connector in a clearly visible manner when an overvoltage occurs.

Die Auslösung des Fail-Safe-Kontaktes wird durch ein Lotformteil realisiert. Die Erwärmung des Überspannungsableiters bewirkt über ein angeschweißtes oder angeklemmtes Leitblech das Abschmelzen des Lotformteils. Das Lotformteil steht unter einer minimalen, genau ausbalancierten und durch den Schieber ausgeübten Federkraft (Druckkraft), die an der Grenze der Selbsthemmung des Schiebers liegt. Durch eine Schrägstellung einer Abstützfläche des Schiebers wird weitgehend eine Entkopplung des Lotformteils und der Federkraft des Schiebers erreicht. Der im Betriebsfall durch eine Kante am Gehäuse gehaltene Schieber wird aufgrund des Schmelzens des Lotformteils und des damit freiwerdenden Federweges von der Kante frei. Der Schieber bewegt sich aufgrund einer an ihm montierten Druckfeder, die sich an einer Gehäuseinnenwand abstützt, nach hinten.The fail-safe contact is triggered by a solder molded part. The heating of the surge arrester causes the solder molded part to melt via a welded or clamped baffle. The solder molded part is under a minimal, precisely balanced spring force (pressure force) exerted by the slide, which lies at the limit of the self-locking of the slide. Decoupling of the support surface of the slide largely decouples the molded solder part and the spring force of the slide. The slide which is held by an edge on the housing during operation is released from the edge due to the melting of the solder molded part and the spring travel thus freed. The slide moves due to a compression spring mounted on it, which is supported on an inner wall of the housing.

Im hinteren Bereich des Steckers ist am Schieber ein rotes Kunststoffteil als Signalisierelement so angeordnet, daß es bei Bewegung des Schiebers nach hinten aus dem Stecker herausgeschwenkt wird und gut sichtbar die Auslösung anzeigt.In the rear area of the plug, a red plastic part is arranged as a signaling element on the slide so that it is pivoted out of the plug when the slide moves to the rear and clearly shows the triggering.

Der Stromschutz wird durch eine Sicherung oder einen temperaturabhängigen Widerstand gewährleistet.Current protection is ensured by a fuse or a temperature-dependent resistor.

Das einteilige Gehäuse und nur wenige Einbauteile gewährleisten eine billige, automatisierbare Fertigung des Steckers.The one-piece housing and only a few built-in parts ensure cheap, automatable manufacture of the connector.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen enthalten.Further advantageous embodiments of the invention are contained in the subclaims.

Die Erfindung ist nachfolgend anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles eines Schutzsteckers näher erläutert. Es zeigen:

Fig. 1
die Explosionsdarstellung der wesentlichen Bestandteile des Schutzsteckers,
Fig. 2
die perspektivische Darstellung des Schiebers,
Fig. 3
die Seitenansicht des geöffneten Steckers,
Fig. 4
die Draufsicht auf die geöffnete Unterseite des Steckers (ohne Leiterplatte),
Fig. 5
die Draufsicht auf die Leiterplatte (Oberseite) und
Fig. 6
die Draufsicht auf die Leiterplatte (Unterseite).
The invention is explained below with reference to an embodiment of a protective plug shown in the drawings. Show it:
Fig. 1
the exploded view of the essential components of the protective plug,
Fig. 2
the perspective view of the slide,
Fig. 3
the side view of the opened plug,
Fig. 4
the top view of the opened underside of the plug (without circuit board),
Fig. 5
the top view of the circuit board (top) and
Fig. 6
the top view of the circuit board (bottom).

Der Schutzstecker ist insbesondere als Überspannungsschutzstecker zur Anwendung in Telekommunikationsanlagen in Verbindung mit Anschlußleisten vorgesehen.The protective plug is provided in particular as an overvoltage protection plug for use in telecommunications systems in connection with terminal strips.

In der Fig. 1 sind in einer Explosionsdarstellung die wesentlichen Bestandteile des Schutzsteckers gezeigt. Entpsrechend der Darstellung in der Fig. 1 besteht der Schutzstecker aus einem äußeren Gehäuse 1, dessen Unterseite von einer Leiterplatte 2 mit einem Überspannungsableiter 3 und mit Sicherungselementen 26 abgeschlossen ist, aus einem Schieber 4 mit einer Druckfeder 8 und einem Lotformteil 7, aus einem Signalisierelement 5 und aus einem Masseblech 27. Der Schutzstecker wird über das Masseblech 27 mit der Erdschiene 34 einer nicht dargestellten Anschlußleiste und darüber mit der Erdung des Schutzsystems verbunden (Fig.3).In Fig. 1 the essential components of the protective plug are shown in an exploded view. Corresponding to the representation in FIG. 1, the protective plug consists of an outer housing 1, the underside of which is closed off by a printed circuit board 2 with a surge arrester 3 and with fuse elements 26, from a slide 4 with a compression spring 8 and a solder molded part 7, from a signaling element 5 and from a ground plate 27. The protective plug is connected via the ground plate 27 to the ground rail 34 of a terminal block, not shown, and above it to the grounding of the protection system (FIG. 3).

Die Fig. 2 zeigt in einer perspektivischen Darstellung den Schieber 4, der aus einem Trägerteil 9 und einem Blattfederteil 14 besteht, die einstückig über eine Verbindung 18 miteinander verbunden sind. Das Trägerteil 9 weist zwei wechselseitig abgebogene Kontaktflügel 10 auf (Fig.4), die im Betriebsfall (keine Überspannung) auf Ruheflächen 28 der Leiterplatte 2 (Fig.5) liegen, welche keinen elektrischen Kontakt zum Signalweg haben. Im Störfall über einen längeren Zeitraum (z.B. im Fall des "power crossing") werden durch die Schieberbewegung die Kontaktflügel 10 auf Kontaktflächen 29 der Leiterplatte 2 geschoben (Fig.5), die im Signalweg liegen. Durch diese Bewegung werden die Leitungswege a,b (Fig. 1,3,5) auf Masse gelegt und die Überspannung wird abgeleitet.2 shows a perspective view of the slide 4, which consists of a carrier part 9 and a leaf spring part 14, which are integrally connected to one another via a connection 18. The carrier part 9 has two mutually bent contact wings 10 (FIG. 4), which (none Overvoltage) lie on resting surfaces 28 of the printed circuit board 2 (FIG. 5), which have no electrical contact with the signal path. In the event of a fault over a longer period of time (for example in the case of "power crossing"), the contact wings 10 are pushed onto contact surfaces 29 of the printed circuit board 2 by the slide movement (FIG. 5), which lie in the signal path. With this movement, the lines a, b (Fig. 1,3,5) are grounded and the overvoltage is derived.

Das Trägerteil 9 enthält eine Aufnahme 11 (Fig.1,4) für die Schraubenfeder 8, die sich an der Gehäuseinnenwand 31 (Fig. 4) abstützt und gegen deren Federkraft der Schieber 4 in das Gehäuse 1 des Schutzsteckers eingebracht wird. Über eine Kontaktfläche 12 des Trägerteils 9 wird eine elektrische Verbindung zwischen dem Schieber 4 und dem Masseblech 27 und einem Leitblech 6 am Überspannungsableiter 3 hergestellt (Fig. 3), so daß über die Erdschiene 34 einer nicht dargestellten Anschlußleiste die Überspannung abgeleitet werden kann und der Überspannungsableiter 3 ständig an Masse gelegt ist.The carrier part 9 contains a receptacle 11 (Fig. 1,4) for the helical spring 8, which is supported on the housing inner wall 31 (Fig. 4) and against whose spring force the slider 4 is inserted into the housing 1 of the protective plug. An electrical connection between the slide 4 and the ground plate 27 and a baffle 6 on the surge arrester 3 is established via a contact surface 12 of the carrier part 9 (FIG. 3), so that the overvoltage can be derived via the ground rail 34 of a terminal block (not shown) and the Surge arrester 3 is constantly connected to ground.

Eine Nut 13 am hinteren Ende des Trägerteils 9 dient der Aufnahme des Signalisierelementes 5 (Fig. 1,4).A groove 13 at the rear end of the carrier part 9 serves to receive the signaling element 5 (Fig. 1.4).

Das Blattfederteil 14 wird aus einem langen Federarm 30, an dessen federndem Ende 15 ein Steg 16 abgewinkelt und ausgeformt ist, und aus einem abgewinkelten Anschlag 19 hinter der Verbindung 18 des Blattfederteils 14 mit dem Trägerteil 9 gebildet. Der Steg 16 trägt das Lotformteil 7 und ist einstückig mit einer abgewinkelten Abstützfläche 17 versehen. Die Abstützfläche 17 des Schiebers 4 ist an einer Kante 20 des Gehäuses 1 (Fig.3) so abgestützt, daß im Betriebsfall durch Selbsthemmungskräfte der Schieber 4 kaum eine Kraft auf das Lotformteil 7 ausübt, welches dessen Federarm 30 abstützt. Erst im Überspannungsfall, wenn das Lotformteil 7 abschmilzt, rutscht die Abstützfläche 17 von der Kante 20 des Gehäuses 1 ab und der Schieber 4 bewegt sich und bewirkt die Spannungsableitung gegen Masse und die Signalisierung des Überspannungsfalles.The leaf spring part 14 is formed from a long spring arm 30, at the resilient end 15 of which a web 16 is angled and shaped, and from an angled stop 19 behind the connection 18 of the leaf spring part 14 with the carrier part 9. The web 16 carries the solder molded part 7 and is integral with an angled support surface 17 is provided. The support surface 17 of the slide 4 is supported on an edge 20 of the housing 1 (FIG. 3) in such a way that, in the event of operation, the slide 4 hardly exerts any force on the solder molded part 7, which supports its spring arm 30, due to self-locking forces. Only in the event of an overvoltage, when the solder molded part 7 melts, does the support surface 17 slide off the edge 20 of the housing 1 and the slide 4 moves and causes the voltage dissipation against ground and the signaling of the overvoltage case.

Für die zuverlässige Funktion des Schiebers 4 ist die Dimensionierung des Federweges des Blattfederteiles 14 und damit dessen Kontaktkraft zur genau richtigen Belastung des Lotformteils 7 sowie die Dimensionierung der Schrägstellung der Abstützfläche 17 in Verbindung mit der Kante 20 am Gehäuse 1 von großer Bedeutung.For the reliable functioning of the slide 4, the dimensioning of the spring travel of the leaf spring part 14 and thus its contact force for the precisely correct loading of the solder molded part 7 and the dimensioning of the inclined position of the support surface 17 in connection with the edge 20 on the housing 1 are of great importance.

Die Nut 13 des Trägerteils 9 dient dem Herausschwenken des Signalisierelementes 5 aus einer Öffnung 32 der Gehäusewand 33 (Fig. 4) bei einer Bewegung des Schiebers 4 nach hinten.The groove 13 of the carrier part 9 serves to pivot the signaling element 5 out of an opening 32 in the housing wall 33 (FIG. 4) when the slide 4 is moved to the rear.

Der Schieber 4 hat als wichtigstes Funktionselement des Schutzsteckers die Realisierung des Kurzschlusses und dessen Signalisierung zur Aufgabe.As the most important functional element of the protective plug, the slide 4 has the task of realizing the short circuit and signaling it.

Anhand der Figuren 3 bis 6 wird die Funktionsweise des Schutzsteckers beschrieben.The mode of operation of the protective plug is described with reference to FIGS. 3 to 6.

Die Seitenansicht des geöffneten Schutzsteckers zeigt entsprechend der Fig. 3 die Funktionselemente des Schutzsteckers in ihrem konstruktiven Zusammenhang.According to FIG. 3, the side view of the opened protective plug shows the functional elements of the protective plug in their constructive context.

Das Gehäuse 1 ist mit der Leiterplatte 2 nach unten abgeschlossen. Die Leiterplatte 2 trägt den Überspannungsableiter 3 mit dem daran befestigten Leitblech 6, welches den Überspannungsableiter 3 über das Masseblech 27 im oberen Teil des Gehäuses 1 und über die Erdschiene 34 einer nicht dargestellten Anschlußleiste mit der Erde verbindet.The housing 1 is closed with the circuit board 2 down. The circuit board 2 carries the surge arrester 3 with the attached baffle 6, which connects the surge arrester 3 via the ground plate 27 in the upper part of the housing 1 and via the earth rail 34 of a terminal block, not shown, to earth.

Der Schieber 4 steht mit seiner Kontaktfläche 12 (Fig.2) über das Masseblech 27 mit der Erde und über das Lotformteil 7 mit dem Leitblech 6 des Überspannungsableiters 3 in Verbindung. Bei Erwärmung des Überspannungsableiters 3 wird über das angeschweißte Leitblech 6 Wärme an das Lotformteil 7 geleitet. Das Lotformteil 7 steht, wie bereits vorher beschrieben, unter einer leichten, genau abgestimmten Federkraft (Druckkraft) des Schiebers 4. Der als Fail-Safe-Mechanismus und zur optischen Signalisierung einer Überspannung eingesetzte Schieber 4 wird aus seiner durch die Kante 20 am Gehäuse 1 und durch die Abstützfläche 17 am Blattfederteil 14 des Schiebers 4 definierte Stellung aufgrund des Federweges freigesetzt, wenn das Lotformteil 7 durch die Erwärmung schmilzt. Der Schieber 4 bewegt sich aufgrund der an ihm montierten Druckfeder 8 (wie bereits vorher beschrieben), die sich an der Gehäuseinnenwand 31 (Fig. 4) abstützt, nach hinten, d.h. vom Ort des Überspannungsableiters 3 weg. Die am Schieber 4 angeordneten zwei Kontaktflügel 10 (Fig.4) werden durch die Schieberbewegung von den Ruheflächen 28 auf zwei Kontaktflächen 29 geschoben (Fig.5). Die Kontaktflächen 29 sind jeweils Kontaktpunkte der Fernmeldeadern a,b. Über die am Schieber 4 angeordneten Kontaktflügel 10 werden die Adern a,b an die Erde angeschlossen.The slide 4 is in contact with its contact surface 12 (FIG. 2) via the ground plate 27 with the earth and via the solder molded part 7 with the guide plate 6 of the surge arrester 3. When the surge arrester 3 is heated, heat is conducted to the solder molded part 7 via the welded-on guide plate 6. As already described above, the solder molding 7 is under a light, precisely coordinated spring force (pressure force) of the slide 4. The slide 4 used as a fail-safe mechanism and for the optical signaling of an overvoltage is removed from it by the edge 20 on the housing 1 and released by the support surface 17 on the leaf spring part 14 of the slide 4 defined position due to the spring travel when the solder molding 7 melts due to the heating. The slide 4 moves due to the compression spring 8 mounted on it (as already described above), which is supported on the housing inner wall 31 (FIG. 4), backwards, ie away from the location of the surge arrester 3. The one on the slider 4 arranged two contact wings 10 (Fig.4) are pushed by the slide movement from the resting surfaces 28 to two contact surfaces 29 (Fig.5). The contact surfaces 29 are each contact points of the telecommunication conductors a, b. The wires a, b are connected to earth via the contact wings 10 arranged on the slide 4.

Der Überspannungsableiter 3 bleibt nach Ansprechen des Fail-Safe-Mechanismus im kurzgeschlossenen Zustand an die Erde angeschlossen. Der Kontakt wird über das angeschweißte Leitblech 6 und das Masseblech 27 zur Erdschiene 34 (Fig.3) der Anschlußleiste (nicht dargestellt) realisiert. Im unausgelösten Zustand ist die Erde zusätzlich noch über das Lotformteil 7 und das Leitblech 6 an den Überspannungsableiter 3 angeschlossen.After the fail-safe mechanism responds, the surge arrester 3 remains connected to earth in the short-circuited state. The contact is realized via the welded-on guide plate 6 and the ground plate 27 to the earth rail 34 (FIG. 3) of the terminal block (not shown). In the undeployed state, the earth is additionally connected to the surge arrester 3 via the solder molded part 7 and the guide plate 6.

Im hinteren Bereich des Steckers ist am Schieber 4 das rote Signalisierelement 5 (Fig.1) so angeordnet bzw. gelagert, daß es bei Bewegung des Schiebers 4 nach hinten, aus dem Stecker herausgeschwenkt bzw. gedreht wird. Im Gehäuse 1 ist dazu ein gehäusefestes Lager 21 (halbrunde Innenfläche als Lager) als ein fester Drehpunkt für die runde Außenfläche 22 des Signalisierelementes 5 vorgesehen, wobei ein Stift 23 in der Nut 13 des Schiebers 4 gelagert ist (Fig. 1,4).In the rear area of the plug, the red signaling element 5 (FIG. 1) is arranged or mounted on the slide 4 such that it is pivoted or rotated out of the plug when the slide 4 moves backwards. For this purpose, a housing-fixed bearing 21 (semicircular inner surface as a bearing) is provided in the housing 1 as a fixed fulcrum for the round outer surface 22 of the signaling element 5, a pin 23 being mounted in the groove 13 of the slide 4 (FIGS. 1.4).

Der Stromschutz wird durch die SMD-Sicherung 26 gewährleistet, die über die Lötpads 25 (Fig. 3,5,6) kontaktiert sind. Die Lötpads 25 sind zur Unterseite der Leiterplatte 2 durchkontaktiert (Fig.6).Current protection is ensured by the SMD fuse 26, which are contacted via the solder pads 25 (FIGS. 3,5,6). The solder pads 25 are plated through to the underside of the printed circuit board 2 (FIG. 6).

Die Sicherungskappen (nicht dargestellt) sind von außen mit Meßspitzen zugänglich und dienen als Meßabgriffspunkte der einzelnen Adern.The safety caps (not shown) are accessible from the outside with measuring tips and serve as measuring tapping points for the individual wires.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

0101
Gehäusecasing
0202
LeiterplatteCircuit board
0303
ÜberspannungsableiterSurge arresters
0404
SchieberSlider
0505
SignalisierelementSignaling element
0606
LeitblechBaffle
0707
LotformteilSolder molding
0808
Federfeather
0909
TrägerteilCarrier part
1010th
KontaktflügelContact wing
1111
Aufnahmeadmission
1212th
KontaktflächeContact area
1313
NutGroove
1414
BlattfederteilLeaf spring part
1515
EndeThe End
1616
Stegweb
1717th
AbstützflächeSupport surface
1818th
Verbindungconnection
1919th
Anschlagattack
2020th
KanteEdge
2121
Lagercamp
2222
runde Außenflächeround outer surface
2323
Stiftpen
2424th
2525th
SMD-LötpadSMD solder pad
2626
SicherungselementSecuring element
2727
MasseblechEarth plate
2828
RuheflächeResting area
2929
KontaktflächeContact area
3030th
FederarmSpring arm
3131
GehäuseinnenwandHousing inner wall
3232
Öffnungopening
3333
GehäusewandHousing wall
3434
ErdschieneEarth rail

Claims (4)

Schutzstecker, insbesondere Überspannungsschutzstecker in Telekommunikationsanlagen, im wesentlichen bestehend aus einem Gehäuse mit einer Leiterplatte, einem Überspannungsableiter, einem Schieber, einer Feder, einem Erdblech, einem Signalisierelement,
dadurch gekennzeichnet, daß der Schieber (4) über eine Abstützfläche (17) und über eine Kante (20) an der Gehäuseinnenwand in das Gehäuse (1) durch die Feder (8) vorgespannt eingebracht ist und daß ein Lotformteil (7) nur minimal durch die Federkraft (Druckkraft) des Schiebers (4) belastet ist.Protective plugs, in particular surge protective plugs in telecommunications systems, essentially consisting of a housing with a printed circuit board, a surge arrester, a slide, a spring, an earth plate, a signaling element,
characterized in that the slide (4) is introduced into the housing (1) by means of a spring (8) via a support surface (17) and an edge (20) on the inner wall of the housing and that a soldered part (7) is only minimal the spring force (pressure force) of the slide (4) is loaded. Schutzstecker nach Anspruch 1, dadurch gekennzeichnet, daß der Schieber (4) einstückig aus einem Trägerteil (9) mit wechselseitig abgewinkelten Kontaktflügeln (10), mit einer Aufnahme (11) für die Feder (8), mit einer Kontaktfläche (12) zur Verbindung des Überspannungsableiters (3) mit Masse über ein Masseblech (27), mit einer Nut (13) zur Halterung des Signalisierelementes (5), und aus einem Blattfederteil (14) mit langem Federarm (30) besteht, wobei das Blattfederteil (14) an seinem federnden Ende (15) zu einem Steg (16) abgewinkelt ist, auf dem das Lotformteil (7) angeordnet ist, und von dem die Abstützfläche (17) abgewinkelt ist.Protective plug according to claim 1, characterized in that the slide (4) is made in one piece from a carrier part (9) with mutually angled contact wings (10), with a receptacle (11) for the spring (8), with a contact surface (12) for connection of the surge arrester (3) with ground via a ground plate (27), with a groove (13) for holding the signaling element (5), and consists of a leaf spring part (14) with a long spring arm (30), the leaf spring part (14) its resilient end (15) is angled to a web (16) on which the solder molded part (7) is arranged and from which the support surface (17) is angled. Schutzstecker nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß im Gehäuse (1) ein gehäusefestes Lager als ein fester Drehpunkt für eine runde Außenfläche (22) des Signalisierelemtes (5) vorgesehen ist, wobei ein Stift (23) des Signalisierelementes (5) in der Nut (13) des Schiebers (4) gelagert ist.Protective plug according to claims 1 and 2, characterized in that a housing-fixed bearing is provided in the housing (1) as a fixed pivot point for a round outer surface (22) of the signaling element (5), a pin (23) of the signaling element (5) is mounted in the groove (13) of the slide (4). Schutzstecker nach Anspruch 1, dadurch gekennzeichnet, daß die beidseitig mit Leiterzügen versehene Leiterplatte (2) im Bereich der SMD-Lötpads (25) durchkontaktiert ist und daß die Leiterplatte (2) den Überspannungsableiter (3) mit dem Leitblech (6) sowie Sicherungselemente (26) aufweist.Protective plug according to claim 1, characterized in that the printed circuit board (2) provided on both sides with conductors is plated through in the area of the SMD solder pads (25) and in that the printed circuit board (2) connects the surge arrester (3) with the guide plate (6) and securing elements ( 26) has.
EP95109298A 1994-10-01 1995-06-16 Protector plug Expired - Lifetime EP0706194B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530019T SI0706194T1 (en) 1994-10-01 1995-06-16 Protector plug

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4437122A DE4437122C2 (en) 1994-10-01 1994-10-01 Surge protection plug
DE4437122 1994-10-01
SG1996010024A SG45487A1 (en) 1994-10-01 1996-06-10 Protection plug

Publications (2)

Publication Number Publication Date
EP0706194A1 true EP0706194A1 (en) 1996-04-10
EP0706194B1 EP0706194B1 (en) 1997-09-03

Family

ID=25941142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109298A Expired - Lifetime EP0706194B1 (en) 1994-10-01 1995-06-16 Protector plug

Country Status (20)

Country Link
US (1) US5574614A (en)
EP (1) EP0706194B1 (en)
JP (1) JPH08111154A (en)
CN (1) CN1036164C (en)
AT (1) ATE157811T1 (en)
AU (1) AU681511B2 (en)
BG (1) BG61628B1 (en)
BR (1) BR9504231A (en)
CZ (1) CZ287054B6 (en)
DE (2) DE4437122C2 (en)
DK (1) DK0706194T3 (en)
ES (1) ES2105820T3 (en)
FI (1) FI954643A (en)
GR (1) GR3025533T3 (en)
HR (1) HRP950393B1 (en)
HU (1) HU215046B (en)
IL (1) IL114301A (en)
NO (1) NO307159B1 (en)
PL (1) PL178044B1 (en)
SG (1) SG45487A1 (en)

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Also Published As

Publication number Publication date
GR3025533T3 (en) 1998-02-27
HUT73109A (en) 1996-06-28
DK0706194T3 (en) 1997-12-08
BR9504231A (en) 1996-07-30
PL310616A1 (en) 1996-04-15
DE59500599D1 (en) 1997-10-09
HU215046B (en) 1998-09-28
US5574614A (en) 1996-11-12
JPH08111154A (en) 1996-04-30
HRP950393A2 (en) 1997-04-30
IL114301A0 (en) 1995-10-31
FI954643A (en) 1996-04-02
IL114301A (en) 1998-02-22
CN1036164C (en) 1997-10-15
HRP950393B1 (en) 1998-12-31
CZ287054B6 (en) 2000-08-16
SG45487A1 (en) 1998-01-16
CZ247295A3 (en) 1997-09-17
ES2105820T3 (en) 1997-10-16
PL178044B1 (en) 2000-02-29
ATE157811T1 (en) 1997-09-15
AU2180995A (en) 1996-04-18
DE4437122A1 (en) 1996-04-04
NO952466D0 (en) 1995-06-20
BG99849A (en) 1996-04-30
AU681511B2 (en) 1997-08-28
FI954643A0 (en) 1995-09-29
HU9501908D0 (en) 1995-08-28
NO307159B1 (en) 2000-02-14
EP0706194B1 (en) 1997-09-03
CN1120237A (en) 1996-04-10
NO952466L (en) 1996-04-02
BG61628B1 (en) 1998-01-30
DE4437122C2 (en) 1996-07-18

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