EP2183752B1 - Electrical protective device - Google Patents

Electrical protective device Download PDF

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Publication number
EP2183752B1
EP2183752B1 EP08786953A EP08786953A EP2183752B1 EP 2183752 B1 EP2183752 B1 EP 2183752B1 EP 08786953 A EP08786953 A EP 08786953A EP 08786953 A EP08786953 A EP 08786953A EP 2183752 B1 EP2183752 B1 EP 2183752B1
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EP
European Patent Office
Prior art keywords
housing
ptc thermistor
protective device
connecting wires
components
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EP08786953A
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German (de)
French (fr)
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EP2183752A1 (en
Inventor
Werner Kahr
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TDK Electronics AG
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Epcos AG
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/022—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being openable or separable from the resistive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/008—Thermistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient

Definitions

  • the invention relates to an electrical protection device.
  • An object to be solved is to provide a protective device that can be produced inexpensively and meets the requirements for telecommunications equipment.
  • the invention relates to a protective device which has two disk-shaped PTC components, wherein the PTC components are arranged in a common housing.
  • the housing has two opposite sides in each case a cylindrical opening, wherein the size of the openings corresponds to the dimensions of the PTC components such that the PTC components are inserted through the openings in the housing.
  • the PTC components are arranged in the housing electrically isolated from each other.
  • the two PTC thermistors each have two connecting wires by means of which the PTC components are locked in the housing.
  • the PTC components are arranged in the housing with the end faces to each other.
  • the PTC thermistors preferably have a round base, they can However, also have a rectangular or any other conceivable shape as a base.
  • the PTC thermistors are inserted through the openings in the housing, so that the PTC components are fixed in the housing.
  • the housing is integrally formed.
  • the protection device consists of only one housing and two PTC thermistors, which are inserted into the openings of the housing. As a result, a cost-effective production of the protective device is possible in which only a few manufacturing steps are required.
  • the housing is preferably made of an electrically insulating and temperature-resistant plastic.
  • the outer dimensions of the housing project beyond the dimensions of the PTC components by only a few tenths of a millimeter. This is an economical and over the prior art, a low height feasible. With a disk diameter of the PTC thermistor components of, for example, 8 mm results in a height of about 8.5 mm.
  • the protective device has a one-piece housing, which is provided with no additional cover.
  • the protective device can be produced inexpensively.
  • the PTC thermistors are laterally inserted into the openings of the protective device, wherein the ends of the leads of the PTC elements after insertion only need to be bent so that a sufficient fixation of the PTC thermistor components is ensured in the housing.
  • a time-consuming and costly threading of the connecting wires in specially provided bushings in the housing is eliminated here, with required distances of the terminals are achieved by the special design of the housing.
  • the size of the openings in the housing is variable according to the PTC components used or adapted to the particular PTC thermistor components used.
  • the PTC components are provided on opposite faces with connecting wires and electrically contacted.
  • the connecting wires of the PTC components preferably run parallel to their Strinclair.
  • the PTC thermistors preferably each have at the opposite end faces two offset by 90 ° arranged connecting wires.
  • the connecting wires are attached to the vertical at an angle of about 135 ° down to the end faces of the PTC components.
  • the connecting wires of the PTC components are angled in the region of the wire center preferably at 135 ° parallel to the end faces of the PTC components.
  • the ends of the connecting wires is an area that is bent by about 90 °.
  • the ends of the connecting wires bent by 90 ° serve to lock the PTC components in the housing of the protective device.
  • the connecting wires of the PTC components thus serve both for contacting to the outside and at the same time by your special wire guide for additional fixation of the PTC components in the housing.
  • the PTC components are not only locked by the clamp in the openings of the housing, but also by means of their connecting wires preferably on the underside of the housing.
  • the housing has recesses on the bottom for receiving the connecting wires of the PTC components.
  • the housing In the region of the openings provided for the PTC elements, the housing has areas which serve as a stop for the connecting wires of the PTC components which are arranged on the front side in the direction of the housing interior as well as on the outwardly facing end faces of the PTC thermistor components when the PTC elements are inserted into the openings.
  • the cylindrical openings in the housing which serve to accommodate the PTC components, have at the downwardly facing region recesses, which serve as a free space for the insertion of the connecting wires during insertion of the PTC components.
  • the PTC thermistors can be inserted with the leads, the connecting wires then come to rest on the attacks, the ends of the leads of PTC thermistor elements, which then bent by 90 ° be used to additionally lock the PTC thermistors in the housing. Furthermore, the angled ends of the PTC components of the connecting wires serve to make electrical contact with the protective device. The angled ends of the leads of the two PTC elements are preferably arranged to be aligned to a pitch of SMD terminals.
  • the protection device can be integrated into any electrical circuit.
  • the protection device is used as a so-called Weg Pair Protector, in which the protection device protects telecommunications equipment from defects or a line failure caused by disturbances on the telephone line. Potential interference may be caused by injected surges or currents due to external events such as a lightning strike on the telephone line or induced overvoltages due to adjacent line-carrying conductors or due to line contact
  • the attachment of the PTC thermistors in the opening of the housing is effected by a clamping, wherein the opening of the housing may have clamping ribs.
  • the opening of the housing is provided in the outer region with a conical projection or an insertion bevel, which facilitate the insertion of the PTC thermistor elements in the opening, wherein at the same time provided for a sufficient clamping of the PTC thermistors in the opening.
  • the protection device is especially suitable for use in telecommunications equipment as a telecom pair protector.
  • the protection device complies with the ITU (International Telecommunication Union) safety regulations in accordance with the ITU T-K20 and K21 telephone equipment safety regulations, whereby the protective device is therefore suitable for the specifications and for the protective elements in use.
  • ITU International Telecommunication Union
  • the electrical dimensioning of the PTC ceramics takes place on an occasion-related basis, with all the properties required for the telecommunication protection devices being adjustable. If necessary, the installation space size must be adjusted if different disc diameters are used.
  • FIG. 1 a first embodiment of the protection device is shown in a three-dimensional view from the front, in which two PTC components 1 are arranged in a common one-piece housing 2.
  • the PTC thermistor components 1 are arranged in openings 3 of the housing 2.
  • the openings 3 of the housing 2 preferably have a size which corresponds to the diameter of the PTC thermistor components 1.
  • the opening 3 additional clamping ribs 6, which serve to clamp the PTC thermistor components 1 in the opening 3 of the housing 1.
  • the connecting wires 4 of the PTC thermistor components 1 are each electrically contacted at the end faces 11 of the PTC thermistor components 1.
  • the two connecting wires 4 of a PTC thermistor device 1 are each arranged parallel to the end faces 11 and offset by 90 ° to each other.
  • the connecting wires 4 In the middle region 41, the connecting wires 4 have a 135 ° angle, wherein the connecting wires 4 extend parallel to the end faces 11 of the PTC thermistor components 1.
  • the Ends 42 of the leads 4 are bent by 90 ° and locked to the bottom 21 of the housing.
  • FIG. 2 is a three-dimensional view of the protection device shown in which the view is directed to the bottom.
  • the housing 2 two PTC thermistors 1 are arranged.
  • the connecting wires 4 of the PTC thermistor components 1 are guided on the underside 21 of the housing 2 to the outside.
  • the openings 3 On the underside of the housing 2, the openings 3 have a downwardly open area.
  • the open area has step-like recesses 5, in which the connecting wires 4 of the PTC thermistor components 1 are led to the outside.
  • the ends 42 of the connecting wires 4 are angled at 90 ° on the underside and serve to lock the PTC thermistor components 1 in the housing 2.
  • the ends 42 of the connecting wires 4 preferably have a predetermined distance, which corresponds to a predetermined SMD pitch.
  • FIG. 3 is a schematic view of the underside of a protective device shown.
  • the underside 21 of the housing 2 has two openings 3 on two opposite sides.
  • a PTC thermistor device 1 is arranged in each case, which has been inserted into the openings 3.
  • the connecting wires 4 of the PTC thermistor components 1 point in the direction of the lower side 21 of the housing 2.
  • the open region 5 has step-like recesses 5 in which the connecting wires 4 of the PTC thermistor components 1 are led to the outside.
  • the openings 3 have recesses 5, which are shaped such that when inserting the PTC thermistor elements 1, the angled connecting wires 4 with the ends 42 in the two lateral recesses 5 come to rest.
  • the ends 42 of the connecting wires 4 abut against the lower edge of the housing 2, so that the ends 42 of the connecting wires 4 provide for an additional locking of the PTC thermistor components 1 in the housing 2.
  • the recesses 5 preferably have a plurality of steps, wherein a first 51 and a second 52 of the steps of the recesses 5 serve for the ends 42 of the connecting wires 4 as a lateral boundary. Due to the position of the first 51 and second 52 stages of the recesses 5, the positioning of the external contact of the protective device is ensured at predetermined SMD contacts simultaneously.
  • the ends 42 of the connecting wires 4 thus preferably have the predetermined distance, which would correspond to the SMD grid.
  • the protective device is thus adapted to a required SMD grid size.
  • the ends 42 of the connecting wires 4 are bent at the bottom by 90 ° and are used in addition to the contacting of the PTC thermistor components 1 to the outside for locking the PTC thermistor components 1 in the housing. 2
  • FIG. 4 shows a schematic view of a protective device from the front.
  • a housing 2 which has two openings 3, of which only one opening 3 is visible, in the openings 3 of the housing 2, preferably each a PTC thermistor device 1 are arranged.
  • the openings 3 of the housing 2 preferably have a size which corresponds to the diameter of the PTC thermistor components 1.
  • the opening 3 additional clamping ribs 6, which is for clamping the PTC components 1 in the opening 3 of the housing 1 serve.
  • the connecting wires 4 of the PTC thermistor components 1 are each electrically contacted at the end faces 11 of the PTC thermistor components 1.
  • the two connecting wires 4 of a PTC thermistor device 1 are each arranged parallel to the end faces 11 and offset by 90 ° to each other. In the central region 41, the connecting wires 4 have a 135 ° angle parallel to the end faces 11 of the PTC thermistor components 1.
  • the ends 42 of the connecting wires 4 are bent by 90 ° and locked to the bottom 21 of the housing.
  • the invention is not limited to the number of elements shown.

Description

Die Erfindung betrifft eine elektrische Schutzvorrichtung.The invention relates to an electrical protection device.

Aus der Druckschrift DE 10243113 A1 ist eine elektrische Baugruppe bekannt die zwei Thermistoren enthält die als Fehlerschutzelement bei der Absicherung von Telefonleitungen verwendet wird. Dokument EP 1 026705 offenbart eine elektrisch Baugruppe die zumindest zwei Kaltleiterbauelement in einem Gehäuse aufweist.From the publication DE 10243113 A1 is an electrical assembly known which contains two thermistors which is used as an error protection element in securing telephone lines. document EP 1 026705 discloses an electrically assembly having at least two PTC thermistor in a housing.

Eine zu lösende Aufgabe besteht darin, eine Schutzvorrichtung anzugeben, die kostengünstig hergestellt werden kann und den Anforderungen für Telekommunikationseinrichtungen genügt.An object to be solved is to provide a protective device that can be produced inexpensively and meets the requirements for telecommunications equipment.

Es wird eine Schutzvorrichtung angegeben, die zwei scheibenförmige Kaltleiterbauelemente aufweist, wobei die Kaltleiterbauelemente in einem gemeinsamen Gehäuse angeordnet sind. Das Gehäuse weist auf zwei gegenüber liegenden Seiten jeweils eine zylindrische Öffnung auf, wobei die Größe der Öffnungen den Abmessungen der Kaltleiterbauelemente derart entspricht, dass die Kaltleiterbauelemente durch die Öffnungen in das Gehäuse einschiebbar sind. Die Kaltleiterbauelemente sind in dem Gehäuse voneinander elektrisch isoliert angeordnet. Die beiden Kaltleiterbauelemente weisen jeweils zwei Anschlussdrähte auf mittels derer die Kaltleiterbauelemente in dem Gehäuse arretiert sind.The invention relates to a protective device which has two disk-shaped PTC components, wherein the PTC components are arranged in a common housing. The housing has two opposite sides in each case a cylindrical opening, wherein the size of the openings corresponds to the dimensions of the PTC components such that the PTC components are inserted through the openings in the housing. The PTC components are arranged in the housing electrically isolated from each other. The two PTC thermistors each have two connecting wires by means of which the PTC components are locked in the housing.

Die Kaltleiterbauelemente sind in dem Gehäuse mit den Stirnflächen zueinander angeordnet. Die Kaltleiterbauelemente weisen vorzugsweise eine runde Grundfläche auf, sie können jedoch auch eine rechteckige oder jede andere denkbare Form als Grundfläche aufweisen.The PTC components are arranged in the housing with the end faces to each other. The PTC thermistors preferably have a round base, they can However, also have a rectangular or any other conceivable shape as a base.

Die Kaltleiterbauelemente werden durch die Öffnungen in das Gehäuse eingeschoben, so dass die Kaltleiterbauelemente in dem Gehäuse fixiert sind.The PTC thermistors are inserted through the openings in the housing, so that the PTC components are fixed in the housing.

In einer bevorzugten Ausführungsform ist das Gehäuse einteilig ausgebildet. Die Schutzvorrichtung besteht nur aus einem Gehäuse und zwei Kaltleiterbauelementen, die in die Öffnungen des Gehäuses eingeschoben werden. Dadurch ist eine kostengünstige Herstellung der Schutzvorrichtung möglich, bei der nur wenige Herstellungsschritte erforderlich sind.In a preferred embodiment, the housing is integrally formed. The protection device consists of only one housing and two PTC thermistors, which are inserted into the openings of the housing. As a result, a cost-effective production of the protective device is possible in which only a few manufacturing steps are required.

Das Gehäuse besteht vorzugsweise aus einem elektrisch isolierenden und temperaturbeständigen Kunststoff.The housing is preferably made of an electrically insulating and temperature-resistant plastic.

In einer bevorzugten Ausführungsform überragen die äußeren Abmessungen des Gehäuses die Abmessungen der Kaltleiterbauelemente nur um wenige Zehntelmillimeter. Dadurch ist eine sparsame und gegenüber dem Stand der Technik auch eine niedrige Bauhöhe realisierbar. Bei einem Scheibendurchmesser der Kaltleiterbauelemente von beispielsweise 8 mm ergibt sich eine Bauhöhe von etwa 8,5 mm.In a preferred embodiment, the outer dimensions of the housing project beyond the dimensions of the PTC components by only a few tenths of a millimeter. This is an economical and over the prior art, a low height feasible. With a disk diameter of the PTC thermistor components of, for example, 8 mm results in a height of about 8.5 mm.

Bevorzugt weist die Schutzvorrichtung ein einteiliges Gehäuse auf, das mit keinem zusätzlichen Deckel versehen ist. Dadurch lässt sich die Schutzvorrichtung kostengünstig herstellen.Preferably, the protective device has a one-piece housing, which is provided with no additional cover. As a result, the protective device can be produced inexpensively.

Bevorzugt werden die Kaltleiterbauelemente seitlich in die Öffnungen der Schutzvorrichtung eingeschoben, wobei die Enden der Anschlussdrähte der Kaltleiterbauelemente nach dem einschieben lediglich umgebogen werden müssen, damit eine ausreichende Fixierung der Kaltleiterbauelemente in dem Gehäuse gewährleistet ist. Ein zeit- und kostenaufwendiges Einfädeln der Anschlussdrähte in extra dafür vorgesehene Durchführungen im Gehäuse entfällt hierbei, wobei erforderliche Abstände der Anschlusskontakte durch die besondere Bauform des Gehäuses erreicht werden.Preferably, the PTC thermistors are laterally inserted into the openings of the protective device, wherein the ends of the leads of the PTC elements after insertion only need to be bent so that a sufficient fixation of the PTC thermistor components is ensured in the housing. A time-consuming and costly threading of the connecting wires in specially provided bushings in the housing is eliminated here, with required distances of the terminals are achieved by the special design of the housing.

Durch die einstückige Ausführung des Gehäuses ist es möglich eine geringe Bauhöhe der Schutzvorrichtung zu erreichen, die die Abmessungen der eingesetzten Kaltleiterbauelemente nur um wenige Zehntelmillimeter übersteigt.Due to the one-piece design of the housing, it is possible to achieve a low overall height of the protective device, which exceeds the dimensions of the PTC thermistors used only by a few tenths of a millimeter.

Die Größe der Öffnungen in dem Gehäuse ist entsprechend den verwendeten Kaltleiterbauelementen variabel oder für die jeweiligen verwendeten Kaltleiterbauelemente anzupassen.The size of the openings in the housing is variable according to the PTC components used or adapted to the particular PTC thermistor components used.

In einer bevorzugten Ausführungsform sind die Kaltleiterbauelemente an gegenüber liegenden Stirnflächen mit Anschlussdrähten versehen und elektrisch kontaktiert. Die Anschlussdrähte der Kaltleiterbauelemente verlaufen vorzugsweise parallel zu deren Strinflächen.In a preferred embodiment, the PTC components are provided on opposite faces with connecting wires and electrically contacted. The connecting wires of the PTC components preferably run parallel to their Strinflächen.

Die Kaltleiterbauelemente weisen vorzugsweise jeweils an den gegenüber liegenden Stirnseiten zwei um 90° versetzt angeordnete Anschlussdrähte auf. Vorzugsweise sind die Anschlussdrähte gegenüber der Senkrechten in einen Winkel von etwa 135° nach unten an den Stirnseiten der Kaltleiterbauelemente befestigt.The PTC thermistors preferably each have at the opposite end faces two offset by 90 ° arranged connecting wires. Preferably, the connecting wires are attached to the vertical at an angle of about 135 ° down to the end faces of the PTC components.

Die Anschlussdrähte der Kaltleiterbauelemente sind im Bereich der Drahtmitte bevorzugt um 135° parallel zu den Stirnflächen der Kaltleiterbauelemente abgewinkelt.The connecting wires of the PTC components are angled in the region of the wire center preferably at 135 ° parallel to the end faces of the PTC components.

An den Enden der Anschlussdrähte befindet sich ein Bereich, der um etwa 90° abgebogen ist. In einer bevorzugten Ausführungsform dienen die um 90° abgebogenen Enden der Anschlussdrähte zur Arretierung der Kaltleiterbauelemente in dem Gehäuse der Schutzvorrichtung. Die Anschlussdrähte der Kaltleiterbauelemente dienen somit sowohl zur Kontaktierung nach Außen als auch gleichzeitig durch Ihre besondere Drahtführung zur zusätzlichen Fixierung der Kaltleiterbauelemente in dem Gehäuse. Somit sind die Kaltleiterbauelemente nicht nur durch die Klemmung in den Öffnungen des Gehäuses arretiert, sondern zusätzlich mittels ihrer Anschlussdrähte vorzugsweise an der Unterseite des Gehäuses.At the ends of the connecting wires is an area that is bent by about 90 °. In a preferred embodiment, the ends of the connecting wires bent by 90 ° serve to lock the PTC components in the housing of the protective device. The connecting wires of the PTC components thus serve both for contacting to the outside and at the same time by your special wire guide for additional fixation of the PTC components in the housing. Thus, the PTC components are not only locked by the clamp in the openings of the housing, but also by means of their connecting wires preferably on the underside of the housing.

In einer bevorzugten Ausführungsform weist das Gehäuse am Boden Aussparungen zur Aufnahme der Anschlussdrähte der Kaltleiterbauelemente auf. Das Gehäuse weist im Bereich der für die Kaltleiterbauelemente vorgesehenen Öffnungen Bereiche auf, die den Anschlussdrähten der Kaltleiterbauelemente, die stirnseitig in Richtung Gehäuseinneres als auch auf den nach Außen weisenden Stirnflächen der Kaltleiterbauelemente angeordnet sind, beim Einschieben der Kaltleiterbauelemente in die Öffnungen als Anschlag dienen. Die zylindrischen Öffnungen im Gehäuse, die zur Aufnahme der Kaltleiterbauelemente dienen, weisen an dem nach unten gewandten Bereich Aussparungen auf, die beim Einführen der Kaltleiterbauelemente als Freiraum für die Einführung der Anschlussdrähte dienen. Durch die nach unten offene zylindrische Aufnahmeöffnung in dem Gehäuse können die Kaltleiterbauelemente mit den Anschlussdrähten eingeschoben werden, wobei die Anschlussdrähte danach an den Anschlägen zu liegen kommen, wobei die Enden der Anschlussdrähte der Kaltleiterbauelemente, die anschließend um 90° abgebogen werden, zur zusätzlichen Arretierung der Kaltleiterbauelemente in dem Gehäuse dienen. Des Weiteren dienen die abgewinkelten Enden der Kaltleiterbauelemente der Anschlussdrähte zur elektrischen Kontaktierung der Schutzvorrichtung. Die abgewinkelten Enden der Anschlussdrähte der beiden Kaltleiterbauelemente sind vorzugsweise so angeordnet, dass sie nach einem Rastermaß von SMD Anschlüsse ausgerichtet sind.In a preferred embodiment, the housing has recesses on the bottom for receiving the connecting wires of the PTC components. In the region of the openings provided for the PTC elements, the housing has areas which serve as a stop for the connecting wires of the PTC components which are arranged on the front side in the direction of the housing interior as well as on the outwardly facing end faces of the PTC thermistor components when the PTC elements are inserted into the openings. The cylindrical openings in the housing, which serve to accommodate the PTC components, have at the downwardly facing region recesses, which serve as a free space for the insertion of the connecting wires during insertion of the PTC components. Through the downwardly open cylindrical receiving opening in the housing, the PTC thermistors can be inserted with the leads, the connecting wires then come to rest on the attacks, the ends of the leads of PTC thermistor elements, which then bent by 90 ° be used to additionally lock the PTC thermistors in the housing. Furthermore, the angled ends of the PTC components of the connecting wires serve to make electrical contact with the protective device. The angled ends of the leads of the two PTC elements are preferably arranged to be aligned to a pitch of SMD terminals.

Durch die, gemäß SMD Anordnung, ausgerichteten Enden der Anschlussdrähte kann die Schutzvorrichtung in jede elektrische Schaltung integriert werden. Bevorzugt wird die Schutzvorrichtung als so genannter Telekom Pair Protector eingesetzt, bei dem die Schutzvorrichtung Telekommunikationseinrichtungen vor Defekten oder einem Leitungsausfall, hervorgerufen durch Störungen auf der Telefonleitung, schützt. Mögliche Störungen können durch eingekoppelte Überspannungen oder Ströme durch externe Ereignisse wie einem Blitzschlag auf die Telefonleitung oder durch induzierte Überspannungen aufgrund von benachbarten, Netzspannung führenden Leitern, oder infolge von Leitungsberührungen hervorgerufen werdenBy, according to SMD arrangement, aligned ends of the leads, the protection device can be integrated into any electrical circuit. Preferably, the protection device is used as a so-called Telekom Pair Protector, in which the protection device protects telecommunications equipment from defects or a line failure caused by disturbances on the telephone line. Potential interference may be caused by injected surges or currents due to external events such as a lightning strike on the telephone line or induced overvoltages due to adjacent line-carrying conductors or due to line contact

In einer Ausführungsform erfolgt die Befestigung der Kaltleiterbauelemente in der Öffnung des Gehäuses durch eine Klemmung, wobei die Öffnung des Gehäuses Klemmrippen aufweisen kann. In einer weiteren Ausführungsform ist die Öffnung des Gehäuses in dem äußeren Bereich mit einem konischen Ansatz oder auch einer Einführungsschräge versehen, die das Einschieben der Kaltleiterbauelemente in die Öffnung erleichtern, wobei gleichzeitig für eine ausreichende Klemmung der Kaltleiterbauelemente in der Öffnung gesorgt ist.In one embodiment, the attachment of the PTC thermistors in the opening of the housing is effected by a clamping, wherein the opening of the housing may have clamping ribs. In a further embodiment, the opening of the housing is provided in the outer region with a conical projection or an insertion bevel, which facilitate the insertion of the PTC thermistor elements in the opening, wherein at the same time provided for a sufficient clamping of the PTC thermistors in the opening.

Die Schutzvorrichtung ist speziell für die Verwendung in Telekommunikationseinrichtungen als Telekom pair protector geeignet. Die Schutzvorrichtung erfüllt die Sicherheitsbestimmungen der ITU (International Telecommunication Union) gemäß den Sicherheitsbestimmungen für Telefoneinrichtungen in den Standards ITU T-K20 und K21, wobei die Schutzeinrichtung somit für die Vorgaben und für die im Einsatz befindlichen Schutzelemente geeignet ist.The protection device is especially suitable for use in telecommunications equipment as a telecom pair protector. The protection device complies with the ITU (International Telecommunication Union) safety regulations in accordance with the ITU T-K20 and K21 telephone equipment safety regulations, whereby the protective device is therefore suitable for the specifications and for the protective elements in use.

Die elektrische Dimensionierung der PTC Keramiken erfolgt anlassbezogen, wobei alle für die Telekommunikationsschutzeinrichtungen erforderlichen Eigenschaften einstellbar sind. Im Bedarfsfall ist die Bauraumgröße anzupassen, sofern unterschiedliche Scheibendurchmesser zur Anwendung kommen.The electrical dimensioning of the PTC ceramics takes place on an occasion-related basis, with all the properties required for the telecommunication protection devices being adjustable. If necessary, the installation space size must be adjusted if different disc diameters are used.

Die beschriebenen Gegenstände werden anhand der folgenden Figuren und Ausführungsbeispiele näher erläutert.The objects described will be explained in more detail with reference to the following figures and embodiments.

Die nachfolgend beschriebenen Zeichnungen sind nicht als maßstabsgetreu aufzufassen. Vielmehr können zur besseren Darstellung einzelne Dimensionen vergrößert, verkleinert oder auch verzerrt dargestellt sein.The drawings described below are not to be considered as true to scale. Rather, for better representation, individual dimensions can be enlarged, reduced or distorted.

Elemente, die einander gleichen oder die die gleiche Funktion übernehmen, sind mit gleichen Bezugszeichen bezeichnet.

Figur 1
zeigt eine erste Ausführungsform der Schutzvorrichtung in einer dreidimensionalen Ansicht von vorne.
Figur 2
zeigt eine dreidimensionale Ansicht der Schutzvorrichtung, bei der der Blick auf die Unterseite gerichtet ist
Figur 3
zeigt eine schematische Ansicht der Unterseite einer Schutzvorrichtung.
Figur 4
zeigt eine schematische Ansicht einer Schutzvorrichtung von vorne
Elements that are equal to each other or that perform the same function are designated by the same reference numerals.
FIG. 1
shows a first embodiment of the protection device in a three-dimensional view from the front.
FIG. 2
shows a three-dimensional view of the protective device, in which the view is directed to the bottom
FIG. 3
shows a schematic view of the underside of a protective device.
FIG. 4
shows a schematic view of a protective device from the front

In Figur 1 ist eine erste Ausführungsform der Schutzvorrichtung in einer dreidimensionalen Ansicht von vorne dargestellt, bei der zwei Kaltleiterbauelemente 1 in einem gemeinsamen einteiligen Gehäuse 2 angeordnet sind. Vorzugsweise sind die Kaltleiterbauelemente 1 in Öffnungen 3 des Gehäuses 2 angeordnet. Die Öffnungen 3 des Gehäuses 2 weisen vorzugsweise eine Größe auf, die dem Durchmesser der Kaltleiterbauelemente 1 entspricht. In der dargestellten Ausführungsform weist die Öffnung 3 zusätzliche Klemmrippen 6 auf, die zur Klemmung der Kaltleiterbauelemente 1 in der Öffnung 3 des Gehäuses 1 dienen. Es ist jedoch auch möglich, die Öffnung ohne Klemmrippen 6 auszuführen, wobei in diesem Fall die Klemmung alleine durch die Innenseite der Öffnung 3 an der Mantelfläche der Kaltleiterbauelemente 1 erfolgt. Die Anschlussdrähte 4 der Kaltleiterbauelemente 1 sind jeweils an den Stirnflächen 11 der Kaltleiterbauelemente 1 elektrisch kontaktiert. Die beiden Anschlussdrähte 4 eines Kaltleiterbauelements 1 sind jeweils parallel zu den Stirnflächen 11 und um 90° versetzt zueinander angeordnet. Im mittleren Bereich 41 weisen die Anschlussdrähte 4 einen 135° Winkel auf, wobei die Anschlussdrähte 4 parallel zu den Stirnflächen 11 der Kaltleiterbauelemente 1 verlaufen. Die Enden 42 der Anschlussdrähte 4 sind um 90° abgebogen und an der Unterseite 21 des Gehäuses arretiert.In FIG. 1 a first embodiment of the protection device is shown in a three-dimensional view from the front, in which two PTC components 1 are arranged in a common one-piece housing 2. Preferably, the PTC thermistor components 1 are arranged in openings 3 of the housing 2. The openings 3 of the housing 2 preferably have a size which corresponds to the diameter of the PTC thermistor components 1. In the illustrated embodiment, the opening 3 additional clamping ribs 6, which serve to clamp the PTC thermistor components 1 in the opening 3 of the housing 1. However, it is also possible to carry out the opening without clamping ribs 6, in which case the clamping takes place solely through the inside of the opening 3 on the lateral surface of the PTC thermistor components 1. The connecting wires 4 of the PTC thermistor components 1 are each electrically contacted at the end faces 11 of the PTC thermistor components 1. The two connecting wires 4 of a PTC thermistor device 1 are each arranged parallel to the end faces 11 and offset by 90 ° to each other. In the middle region 41, the connecting wires 4 have a 135 ° angle, wherein the connecting wires 4 extend parallel to the end faces 11 of the PTC thermistor components 1. The Ends 42 of the leads 4 are bent by 90 ° and locked to the bottom 21 of the housing.

In der Figur 2 ist eine dreidimensionale Ansicht der Schutzvorrichtung dargestellt, bei der der Blick auf die Unterseite gerichtet ist. In dem Gehäuse 2 sind zwei Kaltleiterbauelemente 1 angeordnet. Die Anschlussdrähte 4 der Kaltleiterbauelemente 1 sind auf der Unterseite 21 des Gehäuses 2 nach außen geführt. Auf der Unterseite des Gehäuses 2 weisen die Öffnungen 3 einen nach unten offenen Bereich auf. Der offene Bereich weist stufenartige Aussparungen 5 auf, in denen die Anschlussdrähte 4 der Kaltleiterbauelemente 1 nach außen geführt sind. Die Enden 42 der Anschlussdrähte 4 sind an der Unterseite um 90° abgewinkelt und dienen zur Arretierung der Kaltleiterbauelemente 1 in dem Gehäuse 2. Die Enden 42 der Anschlussdrähte 4 weisen vorzugsweise einen vorgegebenen Abstand auf, der einem vorgegebenen SMD-Rastermass entspricht.In the FIG. 2 is a three-dimensional view of the protection device shown in which the view is directed to the bottom. In the housing 2, two PTC thermistors 1 are arranged. The connecting wires 4 of the PTC thermistor components 1 are guided on the underside 21 of the housing 2 to the outside. On the underside of the housing 2, the openings 3 have a downwardly open area. The open area has step-like recesses 5, in which the connecting wires 4 of the PTC thermistor components 1 are led to the outside. The ends 42 of the connecting wires 4 are angled at 90 ° on the underside and serve to lock the PTC thermistor components 1 in the housing 2. The ends 42 of the connecting wires 4 preferably have a predetermined distance, which corresponds to a predetermined SMD pitch.

In der Figur 3 ist eine schematische Ansicht der Unterseite einer Schutzvorrichtung dargestellt. Die Unterseite 21 des Gehäuses 2 weist auf zwei gegenüberliegende Seiten zwei Öffnungen 3 auf. In den Öffnungen 3 ist jeweils ein Kaltleiterbauelement 1 angeordnet, das in die Öffnungen 3 eingeschoben worden ist. Die Anschlussdrähte 4 der Kaltleiterbauelemente 1 weisen in Richtung Unterseite 21 des Gehäuses 2. Der offene Bereich 5 weist stufenartige Aussparungen 5 auf, in denen die Anschlussdrähte 4 der Kaltleiterbauelemente 1 nach außen geführt sind. Die Öffnungen 3 weisen Aussparungen 5 auf, die derart geformt sind, dass beim Einschieben der Kaltleiterbauelemente 1 die abgewinkelten Anschlussdrähte 4 mit den Enden 42 in den beiden seitlichen Aussparungen 5 zu liegen kommen. Die Enden 42 der Anschlussdrähte 4 liegen an der Unterkante des Gehäuses 2 an, so dass die Enden 42 der Anschlussdrähte 4 für eine zusätzliche Arretierung der Kaltleiterbauelemente 1 in dem Gehäuse 2 sorgen.In the FIG. 3 is a schematic view of the underside of a protective device shown. The underside 21 of the housing 2 has two openings 3 on two opposite sides. In the openings 3, a PTC thermistor device 1 is arranged in each case, which has been inserted into the openings 3. The connecting wires 4 of the PTC thermistor components 1 point in the direction of the lower side 21 of the housing 2. The open region 5 has step-like recesses 5 in which the connecting wires 4 of the PTC thermistor components 1 are led to the outside. The openings 3 have recesses 5, which are shaped such that when inserting the PTC thermistor elements 1, the angled connecting wires 4 with the ends 42 in the two lateral recesses 5 come to rest. The ends 42 of the connecting wires 4 abut against the lower edge of the housing 2, so that the ends 42 of the connecting wires 4 provide for an additional locking of the PTC thermistor components 1 in the housing 2.

Die Aussparungen 5 weisen vorzugsweise mehrere Stufen auf, wobei eine erste 51 und eine zweite 52 der Stufen der Aussparungen 5 für die Enden 42 der Anschlussdrähte 4 als seitliche Begrenzung dienen. Durch die Lage der ersten 51 und zweiten 52 Stufen der Aussparungen 5 wird gleichzeitig die Positionierung der Außenkontaktierung der Schutzvorrichtung an vorgegebene SMD-Kontakte gewährleistet. Die Enden 42 der Anschlussdrähte 4 weisen somit vorzugsweise den vorgegebenen Abstand auf, der dem SMD-Rastermass entsprechen würde. Durch eine Anpassung der ersten 51 und zweiten 52 Stufen der Aussparungen 5, durch die die Enden 42 der Anschlussdrähte 4 in ihrem vertikalen Abstand zumindest größtenteils festgelegt werden, ist die Schutzvorrichtung somit an ein gefordertes SMD-Rastermass angepasst. Die Enden 42 der Anschlussdrähte 4 sind an der Unterseite um 90° abgebogen und dienen neben der Kontaktierung der Kaltleiterbauelemente 1 nach Außen zur Arretierung der Kaltleiterbauelemente 1 in dem Gehäuse 2.The recesses 5 preferably have a plurality of steps, wherein a first 51 and a second 52 of the steps of the recesses 5 serve for the ends 42 of the connecting wires 4 as a lateral boundary. Due to the position of the first 51 and second 52 stages of the recesses 5, the positioning of the external contact of the protective device is ensured at predetermined SMD contacts simultaneously. The ends 42 of the connecting wires 4 thus preferably have the predetermined distance, which would correspond to the SMD grid. By adapting the first 51 and second 52 stages of the recesses 5, by which the ends 42 of the connecting wires 4 are at least largely fixed in their vertical distance, the protective device is thus adapted to a required SMD grid size. The ends 42 of the connecting wires 4 are bent at the bottom by 90 ° and are used in addition to the contacting of the PTC thermistor components 1 to the outside for locking the PTC thermistor components 1 in the housing. 2

Die Figur 4 zeigt eine schematische Ansicht einer Schutzvorrichtung von vorne. In einem Gehäuse 2, das zwei Öffnungen 3 aufweist, von denen nur eine Öffnung 3 sichtbar ist, sind in den Öffnungen 3 des Gehäuses 2 vorzugsweise jeweils ein Kaltleiterbauelement 1 angeordnet. Die Öffnungen 3 des Gehäuses 2 weisen vorzugsweise eine Größe auf, die dem Durchmesser der Kaltleiterbauelemente 1 entspricht. In der dargestellten Ausführungsform weist die Öffnung 3 zusätzliche Klemmrippen 6 auf, die zur Klemmung der Kaltleiterbauelemente 1 in der Öffnung 3 des Gehäuses 1 dienen. Es ist jedoch auch möglich die Öffnung ohne Klemmrippen 6 auszuführen, wobei in diesem Fall die Klemmung alleine durch die Innenseite der Öffnung 3 an der Mantelfläche der Kaltleiterbauelemente 1 erfolgt. Die Anschlussdrähte 4 der Kaltleiterbauelemente 1 sind jeweils an den Stirnflächen 11 der Kaltleiterbauelemente 1 elektrisch kontaktiert. Die beiden Anschlussdrähte 4 eines Kaltleiterbauelements 1 sind jeweils parallel zu den Stirnflächen 11 und um 90° versetzt zueinander angeordnet. Im mittleren Bereich 41 weisen die Anschlussdrähte 4 einen 135° Winkel parallel zu den Stirnflächen 11 der Kaltleiterbauelemente 1 auf. Die Enden 42 der Anschlussdrähte 4 sind um 90° abgebogen und an der Unterseite 21 des Gehäuses arretiert.The FIG. 4 shows a schematic view of a protective device from the front. In a housing 2, which has two openings 3, of which only one opening 3 is visible, in the openings 3 of the housing 2, preferably each a PTC thermistor device 1 are arranged. The openings 3 of the housing 2 preferably have a size which corresponds to the diameter of the PTC thermistor components 1. In the illustrated embodiment, the opening 3 additional clamping ribs 6, which is for clamping the PTC components 1 in the opening 3 of the housing 1 serve. However, it is also possible to carry out the opening without clamping ribs 6, in which case the clamping takes place solely through the inside of the opening 3 on the lateral surface of the PTC thermistor components 1. The connecting wires 4 of the PTC thermistor components 1 are each electrically contacted at the end faces 11 of the PTC thermistor components 1. The two connecting wires 4 of a PTC thermistor device 1 are each arranged parallel to the end faces 11 and offset by 90 ° to each other. In the central region 41, the connecting wires 4 have a 135 ° angle parallel to the end faces 11 of the PTC thermistor components 1. The ends 42 of the connecting wires 4 are bent by 90 ° and locked to the bottom 21 of the housing.

Obwohl in den Ausführungsbeispielen nur eine beschränkte Anzahl möglicher Weiterbildung der Erfindung beschrieben werden konnte ist die Erfindung nicht auf diese beschränkt. Es ist prinzipiell möglich die Größe des Gehäuses zu variieren, sofern unterschiedliche Scheibendurchmesser zu Anwendung kommen.Although only a limited number of possible developments of the invention could be described in the embodiments, the invention is not limited to these. It is possible in principle to vary the size of the housing, if different disc diameters are used.

Die Erfindung ist nicht auf die Anzahl der dargestellten Elemente beschränkt.The invention is not limited to the number of elements shown.

Die Beschreibung der hier angegebenen Gegenstände ist nicht auf die einzelnen speziellen Ausführungsformen beschränkt vielmehr können die Merkmale der einzelnen Ausführungsformen soweit technisch sinnvoll beliebig miteinander kombiniert werden.The description of the objects specified here is not limited to the individual specific embodiments, but rather the features of the individual embodiments can be combined with one another as far as is technically feasible.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
KaltleiterbauelementPTC component
1111
Stirnfläche des Kaltleiterbauelements 1End face of the PTC thermistor device 1
22
Gehäusecasing
2121
Unterseite des Gehäuses 2Bottom of the housing 2
33
Öffnungopening
44
AnschlussdrahtLead wire
4141
Mittlerer Bereich des Anschlussdrahtes 4Middle area of the connection wire 4
4242
Ende des Anschlussdrahtes 4End of the connecting wire 4
55
Aussparungrecess
5151
Erste Stufe der Aussparung 5First stage of the recess 5
5252
Zweite Stufe der Aussparung 5Second step of the recess 5
66
Klemmrippenclamping ribs

Claims (15)

  1. Electrical protective device, having
    - two PTC thermistor components (1) in the form of plates,
    - wherein the PTC thermistor components (1) are arranged in a common housing (2),
    - wherein the housing (2) has an opening (3) on two opposite sides,
    - wherein the size of the openings (3) corresponds to the dimensions of the PTC thermistor components (1) such that the PTC thermistor components (1) can be inserted into the housing through the openings (3), and are locked in the housing (2),
    - wherein the two PTC thermistor components (1) are electrically isolated from one another in the housing (2),
    - and the PTC thermistor components (1) each have at least two connecting wires (4), by means of which the PTC thermistor components (1) are locked to the housing (2).
  2. Protective device according to Claim 1, in which the housing (2) is made in one piece.
  3. Protective device according to one of the preceding claims, in which the housing (2) is composed of plastic.
  4. Protective device according to one of the preceding claims, in which the external dimensions of the housing (2) project only a few millimeters beyond the dimensions of the PTC thermistor components (1).
  5. Protective device according to one of the preceding claims, in which the PTC thermistor components (1) make contact with connecting wires (4) on two opposite base surfaces.
  6. Protective device according to one of the preceding claims, in which the PTC thermistor components (1) each comprise two connecting wires (4), which are arranged parallel to the end faces (11) on the opposite end faces (11), wherein the connecting wires (4) are arranged offset through 90º with respect to one another.
  7. Protective device according to one of the preceding claims, in which the connecting wires (4) are angled through 135º in the central area (41), and parallel to the end surfaces (11) of the PTC thermistor components (1).
  8. Protective device according to one of the preceding claims, in which the connecting wires (4) of the PTC thermistor components (1) are bent through 90º at the ends (42).
  9. Protective device according to one of the preceding claims, in which the ends (42) of the connecting wires (4) which are bent through 90º are used for locking the PTC thermistor components (1) to the housing (2).
  10. Protective device according to one of the preceding claims, in which the housing (2) comprises a plurality of cutouts (5) on its lower face (21), in order to hold the connecting wires of the PTC thermistor components.
  11. Protective device according to one of the preceding claims, in which the PTC thermistor components (1) are mounted in the openings (3) in the housing (2) by clamping.
  12. Protective device according to one of the preceding claims, in which the openings (3) in the housing comprise clamping ribs (6).
  13. Protective device according to one of the preceding claims, in which the openings (3) in the housing (2) comprise a conical attachment in the outer area.
  14. Protective device according to one of the preceding claims, in which the PTC thermistor components (1) comprise a round or a rectangular base surface.
  15. Protective device according to one of the preceding claims, which is suitable for use in telecommunications devices.
EP08786953A 2007-09-06 2008-08-06 Electrical protective device Active EP2183752B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007042358A DE102007042358B3 (en) 2007-09-06 2007-09-06 Electric protection device
PCT/EP2008/060347 WO2009033896A1 (en) 2007-09-06 2008-08-06 Electrical protective device

Publications (2)

Publication Number Publication Date
EP2183752A1 EP2183752A1 (en) 2010-05-12
EP2183752B1 true EP2183752B1 (en) 2012-10-17

Family

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Application Number Title Priority Date Filing Date
EP08786953A Active EP2183752B1 (en) 2007-09-06 2008-08-06 Electrical protective device

Country Status (8)

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US (1) US8004385B2 (en)
EP (1) EP2183752B1 (en)
JP (1) JP5220112B2 (en)
KR (1) KR101447309B1 (en)
CN (1) CN101796594B (en)
DE (1) DE102007042358B3 (en)
RU (1) RU2476946C2 (en)
WO (1) WO2009033896A1 (en)

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JP5395070B2 (en) * 2008-06-06 2014-01-22 タイコエレクトロニクスジャパン合同会社 PTC device
DE102018205280A1 (en) * 2018-04-09 2019-10-10 Mahle International Gmbh PTC module
US20230260681A1 (en) * 2020-05-29 2023-08-17 Tdk Electronics Ag Electrical Component Comprising an Electrical Resistor
CN113744942B (en) * 2020-05-29 2023-11-21 东电化电子元器件(珠海保税区)有限公司 Electrical component comprising a resistor and electrical circuit comprising such an electrical component

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US3750082A (en) * 1972-06-15 1973-07-31 Danfoss As Plug assembly with resistor
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JPH0631685Y2 (en) * 1990-11-26 1994-08-22 太平洋精工株式会社 Blower motor resistor
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Also Published As

Publication number Publication date
US8004385B2 (en) 2011-08-23
RU2476946C2 (en) 2013-02-27
RU2010113005A (en) 2011-10-20
DE102007042358B3 (en) 2008-11-20
JP5220112B2 (en) 2013-06-26
WO2009033896A1 (en) 2009-03-19
EP2183752A1 (en) 2010-05-12
US20100207718A1 (en) 2010-08-19
KR101447309B1 (en) 2014-10-06
JP2010538558A (en) 2010-12-09
KR20100057892A (en) 2010-06-01
CN101796594A (en) 2010-08-04
CN101796594B (en) 2013-02-06

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