EP1768151A1 - Disconnecting device for an electrical conductor - Google Patents

Disconnecting device for an electrical conductor Download PDF

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Publication number
EP1768151A1
EP1768151A1 EP05020723A EP05020723A EP1768151A1 EP 1768151 A1 EP1768151 A1 EP 1768151A1 EP 05020723 A EP05020723 A EP 05020723A EP 05020723 A EP05020723 A EP 05020723A EP 1768151 A1 EP1768151 A1 EP 1768151A1
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EP
European Patent Office
Prior art keywords
conductor
sleeve
waveguide
separating
drive
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
EP05020723A
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German (de)
French (fr)
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EP1768151B1 (en
Inventor
Uwe Brede
Uwe Albrecht
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Delphi Technologies Inc
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Delphi Technologies Inc
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Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to AT05020723T priority Critical patent/ATE390702T1/en
Priority to DE502005003488T priority patent/DE502005003488D1/en
Priority to EP05020723A priority patent/EP1768151B1/en
Priority to US11/524,642 priority patent/US7518483B2/en
Priority to JP2006256144A priority patent/JP4355719B2/en
Publication of EP1768151A1 publication Critical patent/EP1768151A1/en
Application granted granted Critical
Publication of EP1768151B1 publication Critical patent/EP1768151B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/006Opening by severing a conductor

Definitions

  • the present invention relates to a device for separating an electrical conductor in order to be able to interrupt irreversibly and quickly high electrical currents, in particular direct currents, in the event of overload situations in an emergency.
  • pyrotechnic actuators are used to interrupt the electrical conductor by means of a separating element.
  • the conductor to be separated is at least partially formed as a waveguide, so that it is possible to introduce the separator into the interior of the waveguide.
  • the separator not only a very compact design is achieved but it is also possible to cut through the separator the waveguide from the inside out, which is possible with much lower forces, as if the waveguide would be cut from outside to inside.
  • the waveguide may preferably be designed in the manner of a closed sleeve.
  • the sleeve need not necessarily be completely closed or circular.
  • the waveguide is formed sleeve-shaped in the section and in particular in the manner of a closed sleeve and the separator occurs after triggering of the drive substantially along the entire inner circumference with the sleeve into engagement.
  • the conductor can be made relatively thin-walled due to its sleeve-shaped configuration.
  • the separating device has a piston which flares in particular conically and an expansion sleeve.
  • the piston can be moved into the interior of the expansion sleeve, wherein the expansion sleeve spreads outwardly by the conically widening shape of the piston and thereby separates the waveguide.
  • this can be formed partially slotted.
  • the separation process is facilitated.
  • the separating device has a piston which can be separated from the drive. In this way, a compact unit is created in which the piston does not have to be mounted separately.
  • the device is formed overall tubular and has at its two ends connecting means for cables, in particular eyelets or crimping elements.
  • connecting means for cables in particular eyelets or crimping elements.
  • the housing has a receiving space for separated from the separator segments of the waveguide, wherein the receiving space after separation is almost completely filled by parts of the conductor and the separator.
  • the size of the receiving space is chosen so that after triggering almost no air is in the region of the separate conductor, whereby an arc, which can occur under electrical isolation in electrical isolation, not even formed or in the shortest possible time deletes itself again.
  • the conductor is a stamped part, which is at least partially formed into a sleeve, in particular a closed sleeve.
  • a stamped part can be inexpensively made of sheet metal, such as copper or aluminum sheet, and made possible despite the extremely high mechanical precision requirements a low-cost production.
  • the stamped part can be punched from strip material and rolled over a winding mandrel in order to achieve the sleeve-like design.
  • the stamped part may have at two opposite edges a plurality of form-fitting interconnectable, complementary formed sections which are inserted into each other during winding to a sleeve. In this way, results at the separation point an extremely strong connection.
  • the housing has an annular shear edge, whereby the waveguide can be separated simultaneously along its entire circumference.
  • Fig. 1 shows a longitudinal section through a device for separating an electrical conductor with a tubular housing 10 made of plastic, in which an electrical conductor 12 is arranged.
  • an electrical conductor 12 which is formed in the region of the housing to a closed, cylindrical sleeve, there is a pyrotechnic drive unit 14, which is connected to the conductor 12 by a plurality of circumferential beads 16 and the ignition line 18 is led out of the housing 10.
  • the drive 14 is arranged in the conductor 12, that the conical tip is just inside an expansion sleeve 22 which is connected by a circumferential bead 24 with the conductor 12.
  • the expansion sleeve 22 is made of plastic and is formed over its circumference with the illustrated embodiment a total of six downwardly open in the direction of the drive slots 26.
  • the conductor 12 is also provided with a total of six corresponding openings in the form of slots 28, so that the expansion sleeve 22 and the tubular conductor 12 in this section form corresponding segments.
  • the existing plastic housing 10 is provided in the region of these segments on the outer circumference of the conductor 12 with a conical receiving space 30 extending from the drive 14 in the direction of the closed End of the expansion sleeve 22 tapers conically.
  • the bottom 32 of the receiving space 30 forms a voltage applied to the outer circumference of the conductor 12, circular circumferential shear edge 34, with the aid of the tubular conductor 12 can be sheared off when the piston 20 is separated from the drive 14 or blasted off and penetrates into the expansion sleeve 22 ,
  • Fig. 5 shows a development of a stamped part made of sheet metal, from which the conductor 12 is produced. As can be seen, it is a basically cuboidal section on the narrow sides of eyelets 36 are formed, to which a line to be separated can be connected.
  • the two longitudinal sides of the strip-shaped portion are provided with a plurality of tongues 38 which taper and widen, wherein between these tongues complementary recesses 40 are formed, which make it possible to wrap the stamped part to a closed sleeve a positive, mechanically heavy-duty connection the "seam" to produce by the tabs 38 are pressed into the opposite recesses 40.
  • the punched part shown in Fig. 5 is punched from strip material and rolled over a precise mandrel to a cylindrical tube.
  • the preassembled drive 14 is inserted into the interior of the tube and secured by means of the beads 16 in the conductor 12.
  • the expansion sleeve 22 is inserted into the interior of the tubular conductor 12 and secured therein by means of the bead 24.
  • the thus preassembled unit can be arranged in the housing 10.
  • a reinforcing tube 42 is pushed onto the housing 10 in order to reinforce this in the region of the separation point.
  • Fig. 1 shows the device according to the invention at rest, i. before triggering of the drive 14.
  • the piston 20 is integrally connected to the drive unit 14.
  • a pyrotechnic charge generating gas pressure is ignited in the drive unit 14 and the piston 20, which is connected to the drive 14 via a breakaway notch serving as a predetermined breaking point, is disconnected from the drive.
  • the piston 20 moves with high energy in the direction of the expansion sleeve 22 and upon impact of the flared portion of the piston 20, the segments of the expansion sleeve are accelerated radially outwardly or so that the located between the slots 28 of the conductor 12 segments sheared along the shearing edge 34.
  • Fig. 3 shows the device of Figure 1 after separation.
  • the piston 20 remains stuck inside the expansion sleeve and thus ensures irreversible separation.
  • the conductor 12 is separated along its entire circumference and the separated segments of the conductor 12 and the segments of the expansion sleeve 22 fill the receiving space 30 almost completely.
  • FIG. 4 shows a further embodiment of an apparatus for separating an electrical conductor, which differs from the embodiment described above substantially in that, instead of the eyelets 36, a conductor 44 to be cut is crimped into the tubular conductor 12 by crimp connections 46.
  • the ignition line 18 is laterally led out of the housing 10 in this embodiment via a cable guide plug 48.
  • the reinforcing tube 42 is omitted from the drawing in this embodiment.

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  • Fuses (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)

Abstract

The electrical conductor (12) is placed in the tubular housing (10) with a section containing a sleeve-shaped hollow conductor. The cutting device has piston (20) that diverges conically and a spreading sleeve (22). The cutting device enters into engagement with the interior of the hollow conductor in the section after the triggering of the pyrotechnic drive (14) to cut the hollow conductor.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Trennen eines elektrischen Leiters, um bei Überlastsituationen im Notfall irreversibel und schnell hohe elektrische Ströme, insbesondere Gleichströme unterbrechen zu können. Bei derartigen Vorrichtungen, die grundsätzlich bekannt sind, werden pyrotechnische Antriebe verwendet, um den elektrischen Leiter mit Hilfe eines Trennelementes zu unterbrechen.The present invention relates to a device for separating an electrical conductor in order to be able to interrupt irreversibly and quickly high electrical currents, in particular direct currents, in the event of overload situations in an emergency. In such devices, which are basically known, pyrotechnic actuators are used to interrupt the electrical conductor by means of a separating element.

Es ist die Aufgabe der vorliegenden Erfindung, eine Vorrichtung der eingangs genannten Art zu schaffen, die bei schneller Auslösung kompakt baut.It is the object of the present invention to provide a device of the type mentioned, which builds compact at fast triggering.

Die Lösung dieser Aufgabe erfolgt durch die Merkmale des Anspruchs 1 und insbesondere dadurch, dass ein elektrischer Leiter, der in einem Gehäuse angeordnet ist, zumindest abschnittweise als Hohlleiter ausgebildet ist, wobei nach Auslösen eines pyrotechnischen Antriebs eine Trenneinrichtung im Bereich des als Hohlleiter ausgebildeten Abschnitts mit dem Inneren des Hohlleiters in Eingriff tritt, um diesen zu trennen.The solution of this object is achieved by the features of claim 1 and in particular by the fact that an electrical conductor which is arranged in a housing, at least partially formed as a waveguide, wherein after triggering a pyrotechnic drive, a separating device in the region formed as a waveguide section engages the interior of the waveguide to separate it.

Erfindungsgemäß ist der zu trennende Leiter zumindest teilweise als Hohlleiter ausgebildet, so dass es möglich ist, die Trenneinrichtung in das Innere des Hohlleiters einzubringen. Hierdurch wird nicht nur eine sehr kompakte Bauweise erreicht sondern es ist auch möglich, durch die Trenneinrichtung den Hohlleiter von innen nach außen zu durchtrennen, was mit wesentlich geringeren Kräften möglich ist, als wenn der Hohlleiter von außen nach innen durchtrennt würde.According to the invention the conductor to be separated is at least partially formed as a waveguide, so that it is possible to introduce the separator into the interior of the waveguide. As a result, not only a very compact design is achieved but it is also possible to cut through the separator the waveguide from the inside out, which is possible with much lower forces, as if the waveguide would be cut from outside to inside.

Der Hohlleiter kann vorzugsweise nach Art einer geschlossenen Hülse ausgebildet sein. Die Hülse muss jedoch nicht notwendigerweise vollständig geschlossen oder kreisrund ausgebildet sein.The waveguide may preferably be designed in the manner of a closed sleeve. However, the sleeve need not necessarily be completely closed or circular.

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

Nach einer ersten vorteilhaften Ausführungsform ist der Hohlleiter in dem Abschnitt hülsenförmig und insbesondere nach Art einer geschlossenen Hülse ausgebildet und die Trenneinrichtung tritt nach Auslösen des Antriebs im Wesentlichen entlang des gesamten Innenumfangs mit der Hülse in Eingriff. Bei dieser Ausführungsform wird ein besonders rasches und sicheres Trennen des Leiters sichergestellt, da einerseits entlang des gesamten Innenumfangs des Leiters ein Abtrennen erfolgt und da andererseits der Leiter aufgrund seiner hülsenförmigen Ausbildung vergleichsweise dünnwandig hergestellt werden kann.According to a first advantageous embodiment, the waveguide is formed sleeve-shaped in the section and in particular in the manner of a closed sleeve and the separator occurs after triggering of the drive substantially along the entire inner circumference with the sleeve into engagement. In this embodiment, a particularly rapid and safe separation of the conductor is ensured, since on the one hand along the entire inner circumference of the conductor separation takes place and on the other hand, the conductor can be made relatively thin-walled due to its sleeve-shaped configuration.

Nach einer weiteren vorteilhaften Ausführungsform weist die Trenneinrichtung einen sich insbesondere konisch erweiternden Kolben und eine Spreizhülse auf. Hierdurch kann mit Hilfe des Antriebs der Kolben in das Innere der Spreizhülse bewegt werden, wobei sich die Spreizhülse durch die konisch erweiternde Form des Kolbens nach außen aufspreizt und dadurch den Hohlleiter trennt. Um das Aufspreizen der Spreizhülse zu erleichtern, kann diese bereichsweise geschlitzt ausgebildet sein. Darüber hinaus kann es vorteilhaft sein, auch den Hohlleiter mit Öffnungen, insbesondere Schlitzen zu versehen, da hierdurch das Abtrennen bzw. das Aufspreizen des Hohlleiters erleichtert wird.According to a further advantageous embodiment, the separating device has a piston which flares in particular conically and an expansion sleeve. As a result, with the aid of the drive, the piston can be moved into the interior of the expansion sleeve, wherein the expansion sleeve spreads outwardly by the conically widening shape of the piston and thereby separates the waveguide. In order to facilitate the spreading of the expansion sleeve, this can be formed partially slotted. In addition, it may be advantageous to provide the waveguide with openings, in particular slots, as this the separation or spreading of the waveguide is facilitated.

Sofern der Hohlleiter und die Spreizhülse miteinander fluchtende Öffnungen, insbesondere Schlitze, aufweisen, wird der Trennvorgang erleichtert.If the waveguide and the expansion sleeve having mutually aligned openings, in particular slots, the separation process is facilitated.

Nach einer weiteren vorteilhaften Ausführungsform weist die Trenneinrichtung einen von dem Antrieb abtrennbaren Kolben auf. Auf diese Weise ist eine kompakte Baueinheit geschaffen, bei der der Kolben nicht separat montiert werden muss.According to a further advantageous embodiment, the separating device has a piston which can be separated from the drive. In this way, a compact unit is created in which the piston does not have to be mounted separately.

Nach einer weiteren vorteilhaften Ausführungsform ist die Vorrichtung insgesamt rohrförmig ausgebildet und weist an ihren beiden Enden Anschlussmittel für Kabel, insbesondere Ösen oder Crimpelemente auf. Auf diese Weise ist eine äußerst kompakte Trennvorrichtung geschaffen, die sich universell einsetzen lässt, da lediglich die zu unterbrechende Leitung mit den Anschlussmitteln verbunden werden muss.According to a further advantageous embodiment, the device is formed overall tubular and has at its two ends connecting means for cables, in particular eyelets or crimping elements. In this way, an extremely compact separation device is created, which can be used universally, since only the line to be disconnected must be connected to the connection means.

Nach einer weiteren vorteilhaften Ausführungsform weist das Gehäuse einen Aufnahmeraum für von der Trenneinrichtung abgetrennte Segmente des Hohlleiters auf, wobei der Aufnahmeraum nach erfolgter Trennung nahezu vollständig durch Teile des Leiters und der Trenneinrichtung ausgefüllt ist. Bei dieser Ausführungsform ist die Größe des Aufnahmeraumes so gewählt, dass nach erfolgter Auslösung sich nahezu keine Luft im Bereich des getrennten Leiters befindet, wodurch ein Lichtbogen, der bei elektrischer Trennung unter Stromschluss entstehen kann, sich erst gar nicht ausbildet bzw. sich in kürzester Zeit von selbst wieder löscht.According to a further advantageous embodiment, the housing has a receiving space for separated from the separator segments of the waveguide, wherein the receiving space after separation is almost completely filled by parts of the conductor and the separator. In this embodiment, the size of the receiving space is chosen so that after triggering almost no air is in the region of the separate conductor, whereby an arc, which can occur under electrical isolation in electrical isolation, not even formed or in the shortest possible time deletes itself again.

Nach einer weiteren vorteilhaften Ausführungsform ist der Leiter ein Stanzteil, das zumindest abschnittsweise zu einer Hülse, insbesondere einer geschlossenen Hülse geformt ist. Ein solches Stanzteil kann kostengünstig aus Blech, z.B. Kupfer- oder Aluminiumblech, gefertigt werden und erlaubt trotz der außerordentlich hohen mechanischen Präzisionsanforderungen eine preisgünstige Herstellung. Das Stanzteil kann aus Bandmaterial gestanzt und über einen Wickeldorn gewalzt werden, um die hülsenförmige Ausbildung zu erreichen. Nach einer weiteren vorteilhaften Ausführungsform kann dabei das Stanzteil an zwei gegenüberliegenden Rändern eine Vielzahl formschlüssig miteinander verbindbarer, komplementär ausgebildeter Abschnitte aufweisen, die beim Wickeln zu einer Hülse ineinander eingefügt werden. Auf diese Weise ergibt sich an der Trennstelle eine äußerst feste Verbindung.According to a further advantageous embodiment of the conductor is a stamped part, which is at least partially formed into a sleeve, in particular a closed sleeve. Such a stamped part can be inexpensively made of sheet metal, such as copper or aluminum sheet, and made possible despite the extremely high mechanical precision requirements a low-cost production. The stamped part can be punched from strip material and rolled over a winding mandrel in order to achieve the sleeve-like design. According to a further advantageous embodiment, the stamped part may have at two opposite edges a plurality of form-fitting interconnectable, complementary formed sections which are inserted into each other during winding to a sleeve. In this way, results at the separation point an extremely strong connection.

Nach einer weiteren vorteilhaften Ausführungsform weist das Gehäuse eine ringförmige Scherkante auf, wodurch der Hohlleiter entlang seines gesamten Umfangs gleichzeitig abgetrennt werden kann.According to a further advantageous embodiment, the housing has an annular shear edge, whereby the waveguide can be separated simultaneously along its entire circumference.

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

Fig. 1
einen Längsschnitt durch eine Ausführungsform einer Vorrichtung zum Trennen eines elektrischen Leiters;
Fig. 2
einen Schnitt entlang der Linie II - II von Fig. 1;
Fig. 3
einen Längsschnitt durch die Ausführungsform von Fig. 1 nach erfolgtem Trennvorgang;
Fig. 4
einen Längsschnitt durch eine weitere Ausführungsform einer Vorrichtung zum Trennen eines elektrischen Leiters; und
Fig. 5
die Abwicklung eines Stanzteils, das als elektrischer Leiter dient.
Hereinafter, the present invention will be described purely by way of example with reference to advantageous embodiments and with reference to the accompanying drawings. Show it:
Fig. 1
a longitudinal section through an embodiment of an apparatus for separating an electrical conductor;
Fig. 2
a section along the line II - II of Fig. 1;
Fig. 3
a longitudinal section through the embodiment of Figure 1 after the separation process.
Fig. 4
a longitudinal section through a further embodiment of an apparatus for separating an electrical conductor; and
Fig. 5
the development of a stamped part, which serves as an electrical conductor.

Fig. 1 zeigt einen Längsschnitt durch eine Vorrichtung zum Trennen eines elektrischen Leiters mit einem rohrförmig ausgebildeten Gehäuse 10 aus Kunststoff, in dem ein elektrischer Leiter 12 angeordnet ist. Innerhalb des elektrischen Leiters 12, der im Bereich des Gehäuses zu einer geschlossenen, zylinderförmigen Hülse geformt ist, befindet sich eine pyrotechnische Antriebseinheit 14, die mit dem Leiter 12 durch mehrere umlaufende Sicken 16 verbunden ist und deren Zündleitung 18 aus dem Gehäuse 10 herausgeführt ist.Fig. 1 shows a longitudinal section through a device for separating an electrical conductor with a tubular housing 10 made of plastic, in which an electrical conductor 12 is arranged. Within the electrical conductor 12, which is formed in the region of the housing to a closed, cylindrical sleeve, there is a pyrotechnic drive unit 14, which is connected to the conductor 12 by a plurality of circumferential beads 16 and the ignition line 18 is led out of the housing 10.

Das vordere Ende des pyrotechnischen Antriebs 14, der im Wesentlichen aus Kunststoff besteht, ist mit einem einstückig angeformten Kolben 20 versehen, dessen vorderste Spitze konisch ausgebildet ist. An diese konische Spitze schließt sich ein kreiszylinderförmiger Abschnitt an, der sich anschließend auf den Innendurchmesser des hülsenförmigen Leiters 12 konisch erweitert. Hierbei ist der Antrieb 14 so in dem Leiter 12 angeordnet, dass sich die konische Spitze gerade im Inneren einer Spreizhülse 22 befindet, die durch eine umlaufende Sicke 24 mit dem Leiter 12 verbunden ist. Die Spreizhülse 22 besteht aus Kunststoff und ist über ihren Umfang mit beim dargestellten Ausführungsbeispiel insgesamt sechs nach unten in Richtung des Antriebs offenen Schlitzen 26 ausgebildet.The front end of the pyrotechnic actuator 14, which consists essentially of plastic, is provided with an integrally formed piston 20, the foremost tip of which is conical. At this conical tip, a circular cylindrical portion connects, which then widens conically to the inner diameter of the sleeve-shaped conductor 12. Here, the drive 14 is arranged in the conductor 12, that the conical tip is just inside an expansion sleeve 22 which is connected by a circumferential bead 24 with the conductor 12. The expansion sleeve 22 is made of plastic and is formed over its circumference with the illustrated embodiment a total of six downwardly open in the direction of the drive slots 26.

Wie insbesondere Fig. 5 zeigt, ist der Leiter 12 ebenfalls mit insgesamt sechs korrespondierenden Öffnungen in Form von Schlitzen 28 versehen, so dass die Spreizhülse 22 und der in diesem Abschnitt rohrförmige Leiter 12 korrespondierende Segmente bilden.As particularly shown in FIG. 5, the conductor 12 is also provided with a total of six corresponding openings in the form of slots 28, so that the expansion sleeve 22 and the tubular conductor 12 in this section form corresponding segments.

Das aus Kunststoff bestehende Gehäuse 10 ist im Bereich dieser Segmente am Außenumfang des Leiters 12 mit einem kegelförmigen Aufnahmeraum 30 versehen, der sich vom Antrieb 14 in Richtung des geschlossenen Endes der Spreizhülse 22 konisch verjüngt. Der Boden 32 des Aufnahmeraums 30 bildet eine an den Außenumfang des Leiters 12 anliegende, kreisförmig umlaufende Scherkante 34, mit deren Hilfe der rohrförmige Leiter 12 abgeschert werden kann, wenn der Kolben 20 von dem Antrieb 14 abgetrennt oder abgesprengt wird und in die Spreizhülse 22 eindringt.The existing plastic housing 10 is provided in the region of these segments on the outer circumference of the conductor 12 with a conical receiving space 30 extending from the drive 14 in the direction of the closed End of the expansion sleeve 22 tapers conically. The bottom 32 of the receiving space 30 forms a voltage applied to the outer circumference of the conductor 12, circular circumferential shear edge 34, with the aid of the tubular conductor 12 can be sheared off when the piston 20 is separated from the drive 14 or blasted off and penetrates into the expansion sleeve 22 ,

Fig. 5 zeigt eine Abwicklung eines Stanzteiles aus Blech, aus dem der Leiter 12 hergestellt wird. Wie zu erkennen ist, handelt es sich um einen grundsätzlich quaderförmigen Abschnitt an dessen Schmalseiten Ösen 36 angeformt sind, an denen eine zu trennende Leitung angeschlossen werden kann. Die beiden Längsseiten des streifenförmigen Abschnittes sind mit einer Vielzahl von Zungen 38 versehen, die sich verjüngen und erweitern, wobei zwischen diesen Zungen komplementäre Aussparungen 40 gebildet sind, die es ermöglichen, nach Wickeln des Stanzteiles zu einer geschlossenen Hülse eine formschlüssige, mechanisch hochbelastbare Verbindung an der "Nahtstelle" zu erzeugen, indem die Zungen 38 in die gegenüberliegenden Aussparungen 40 gedrückt werden.Fig. 5 shows a development of a stamped part made of sheet metal, from which the conductor 12 is produced. As can be seen, it is a basically cuboidal section on the narrow sides of eyelets 36 are formed, to which a line to be separated can be connected. The two longitudinal sides of the strip-shaped portion are provided with a plurality of tongues 38 which taper and widen, wherein between these tongues complementary recesses 40 are formed, which make it possible to wrap the stamped part to a closed sleeve a positive, mechanically heavy-duty connection the "seam" to produce by the tabs 38 are pressed into the opposite recesses 40.

Zur Montage der in Fig. 1 gezeigten Vorrichtung wird das in Fig. 5 gezeigte Stanzteil aus Bandmaterial gestanzt und über einen präzisen Wickeldorn zu einem zylindrischen Rohr gewalzt. Anschließend wird der vormontierte Antrieb 14 in das Innere des Rohres eingesteckt und mit Hilfe der Sicken 16 in dem Leiter 12 befestigt. Ebenso wird die Spreizhülse 22 in das innere des rohrförmigen Leiters 12 eingesetzt und mit Hilfe der Sicke 24 darin befestigt. Anschließend kann die so vormontierte Einheit in dem Gehäuse 10 angeordnet werden. Schließlich wird noch ein Verstärkungsrohr 42 auf das Gehäuse 10 aufgeschoben, um dieses im Bereich der Trennstelle zu verstärken.For mounting the device shown in Fig. 1, the punched part shown in Fig. 5 is punched from strip material and rolled over a precise mandrel to a cylindrical tube. Subsequently, the preassembled drive 14 is inserted into the interior of the tube and secured by means of the beads 16 in the conductor 12. Similarly, the expansion sleeve 22 is inserted into the interior of the tubular conductor 12 and secured therein by means of the bead 24. Subsequently, the thus preassembled unit can be arranged in the housing 10. Finally, a reinforcing tube 42 is pushed onto the housing 10 in order to reinforce this in the region of the separation point.

Fig. 1 zeigt die erfindungsgemäße Vorrichtung im Ruhezustand, d.h. vor Auslösen des Antriebs 14. In diesem Zustand ist der Kolben 20 einstückig mit der Antriebseinheit 14 verbunden. Bei Auslösen der Antriebseinheit 14 mit Hilfe eines elektrischen Impulses wird in der Antriebseinheit 14 eine pyrotechnische, Gasdruck erzeugende Ladung gezündet und der Kolben 20, der über eine als Sollbruchstelle dienende Abreißkerbe mit dem Antrieb 14 verbunden ist, wird von dem Antrieb abgetrennt. Hierauf bewegt sich der Kolben 20 mit hoher Energie in Richtung der Spreizhülse 22 und bei Auftreffen des sich konisch erweiternden Abschnittes des Kolbens 20 werden die Segmente der Spreizhülse radial nach außen beschleunigt bzw. gedrückt, so dass die zwischen den Schlitzen 28 des Leiters 12 befindlichen Segmente entlang der Scherkante 34 abgeschert werden.Fig. 1 shows the device according to the invention at rest, i. before triggering of the drive 14. In this state, the piston 20 is integrally connected to the drive unit 14. When the drive unit 14 is triggered by means of an electrical pulse, a pyrotechnic charge generating gas pressure is ignited in the drive unit 14 and the piston 20, which is connected to the drive 14 via a breakaway notch serving as a predetermined breaking point, is disconnected from the drive. Thereafter, the piston 20 moves with high energy in the direction of the expansion sleeve 22 and upon impact of the flared portion of the piston 20, the segments of the expansion sleeve are accelerated radially outwardly or so that the located between the slots 28 of the conductor 12 segments sheared along the shearing edge 34.

Fig. 3 zeigt die Vorrichtung von Fig.1 nach erfolgter Abtrennung. Wie zu erkennen ist, bleibt der Kolben 20 im Inneren der Spreizhülse stecken und sorgt so für eine irreversible Trennung. Der Leiter 12 ist entlang seines gesamten Umfangs getrennt und die abgetrennten Segmente des Leiters 12 sowie die Segmente der Spreizhülse 22 füllen den Aufnahmeraum 30 nahezu vollständig aus.Fig. 3 shows the device of Figure 1 after separation. As can be seen, the piston 20 remains stuck inside the expansion sleeve and thus ensures irreversible separation. The conductor 12 is separated along its entire circumference and the separated segments of the conductor 12 and the segments of the expansion sleeve 22 fill the receiving space 30 almost completely.

Fig. 4 zeigt eine weitere Ausführungsform einer Vorrichtung zum Trennen eines elektrischen Leiters, die sich von der vorstehend beschriebenen Ausführungsform im Wesentlichen dadurch unterscheidet, dass anstelle der Ösen 36 ein zu trennender Leiter 44 mittels Crimpverbindungen 46 in den rohrförmigen Leiter 12 eingecrimpt ist. Die Zündleitung 18 ist bei dieser Ausführungsform über einen Kabelführungsstopfen 48 seitlich aus dem Gehäuse 10 herausgeführt. Das Verstärkungsrohr 42 ist bei dieser Ausführungsform in der zeichnerischen Darstellung weggelassen.4 shows a further embodiment of an apparatus for separating an electrical conductor, which differs from the embodiment described above substantially in that, instead of the eyelets 36, a conductor 44 to be cut is crimped into the tubular conductor 12 by crimp connections 46. The ignition line 18 is laterally led out of the housing 10 in this embodiment via a cable guide plug 48. The reinforcing tube 42 is omitted from the drawing in this embodiment.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Gehäusecasing
1212
Leiterladder
1414
Antriebdrive
1616
SickeBeading
1818
ZündleitungIgnition
2020
Kolbenpiston
2222
Spreizhülseexpansion sleeve
2424
SickeBeading
2626
Schlitzeslots
2828
Schlitzeslots
3030
Aufnahmeraumaccommodation space
3232
Boden des AufnahmeraumsFloor of the recording room
3434
Scherkanteshearing edge
3636
Anschlussösenon lugs
3838
Zungentongues
4040
Aussparungenrecesses
4242
Verstärkungsrohrreinforcing tube
4444
Zuleitungenleads
4646
Crimpverbindungcrimp
4848
KabelführungsstopfenCable Cable Glands

Claims (11)

Vorrichtung zum Trennen eines elektrischen Leiters, mit - einem in einem Gehäuse (10) angeordneten elektrischen Leiter (12), der zumindest in einem Abschnitt als Hohlleiter ausgebildet ist, - einem pyrotechnischen Antrieb (14), und - einer Trenneinrichtung (20, 22), wobei nach Auslösen des Antriebs (14) die Trenneinrichtung (20, 22) im Bereich des Abschnitts mit dem Inneren des Hohlleiters (12) in Eingriff tritt, um diesen zu trennen.Device for separating an electrical conductor, with an electrical conductor (12) arranged in a housing (10), which is formed as a waveguide at least in one section, - a pyrotechnic drive (14), and a separating device (20, 22), wherein after release of the drive (14), the separating device (20, 22) engages in the region of the section with the interior of the waveguide (12) in order to separate it. Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass
der Hohlleiter (12) in dem Abschnitt hülsenförmig ausgebildet ist, und dass die Trenneinrichtung (20, 22) nach Auslösen des Antriebs (14) im Wesentlichen entlang des gesamten Innenumfangs der Hülse mit dem Leiter (12) in Eingriff tritt.
Device according to claim 1,
characterized in that
the waveguide (12) is sleeve-shaped in the section, and in that the release device (20, 22) engages with the conductor (12) substantially along the entire inner circumference of the sleeve after the drive (14) has been triggered.
Vorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
die Trenneinrichtung einen sich insbesondere konisch erweiternden Kolben (20) und eine Spreizhülse (22) aufweist.
Apparatus according to claim 1 or 2,
characterized in that
the separating device has a piston (20) which widens in particular conically and an expansion sleeve (22).
Vorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass
der Hohlleiter (12) und die Spreizhülse (22) miteinander fluchtende Öffnungen, insbesondere Schlitze (26, 28), aufweisen.
Device according to claim 3,
characterized in that
the waveguide (12) and the expansion sleeve (22) are aligned with each other openings, in particular slots (26, 28).
Vorrichtung nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
die Trenneinrichtung einen von dem Antrieb (14) abtrennbaren Kolben (20) aufweist.
Device according to at least one of the preceding claims,
characterized in that
the separating device has a piston (20) which can be separated from the drive (14).
Vorrichtung nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
diese insgesamt rohrförmig ausgebildet ist und an ihren beiden Enden Anschlussmittel für Kabel, insbesondere Ösen (36) oder Crimpelemente (46), aufweist.
Device according to at least one of the preceding claims,
characterized in that
this is formed overall tubular and at its two ends connecting means for cables, in particular eyelets (36) or crimping elements (46).
Vorrichtung nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
das Gehäuse (10) einen Aufnahmeraum (30) für von der Trenneinrichtung abgetrennte Segmente des Hohlleiters (12) aufweist, wobei der Aufnahmeraum (30) nach erfolgter Trennung nahezu vollständig durch Teile des Leiters (12) und der Trenneinrichtung (22) ausgefüllt ist.
Device according to at least one of the preceding claims,
characterized in that
the housing (10) has a receiving space (30) for separated from the separator segments of the waveguide (12), wherein the receiving space (30) after separation almost completely by parts of the conductor (12) and the separating device (22) is filled.
Vorrichtung nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
der Leiter (12) ein zumindest abschnittsweise zu einer Hülse geformtes Stanzteil ist.
Device according to at least one of the preceding claims,
characterized in that
the conductor (12) is an at least partially formed into a sleeve punched part.
Vorrichtung nach Anspruch 8,
dadurch gekennzeichnet, dass
das Stanzteil eine Vielzahl formschlüssig miteinander verbindbarer, komplementär ausgebildeter Abschnitte (38, 40) aufweist.
Device according to claim 8,
characterized in that
the stamped part has a plurality of form-fitting interconnectable, complementary formed sections (38, 40).
Vorrichtung nach zumindest einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
das Gehäuse (10) eine ringförmige Scherkante (34) aufweist.
Device according to at least one of the preceding claims,
characterized in that
the housing (10) has an annular shearing edge (34).
Verwendung eines zumindest abschnittsweise zu einer geschlossenen Hülse geformten Stanzteiles als elektrischer Leiter in einer Vorrichtung zum Trennen eines elektrischen Leiters, mit einem pyrotechnischen Antrieb, und einer Trenneinrichtung.Use of an at least partially formed into a closed sleeve punched part as an electrical conductor in a device for separating an electrical conductor, with a pyrotechnic drive, and a separator.
EP05020723A 2005-09-22 2005-09-22 Disconnecting device for an electrical conductor Not-in-force EP1768151B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT05020723T ATE390702T1 (en) 2005-09-22 2005-09-22 DEVICE FOR DISCONNECTING AN ELECTRICAL CONDUCTOR
DE502005003488T DE502005003488D1 (en) 2005-09-22 2005-09-22 Device for separating an electrical conductor
EP05020723A EP1768151B1 (en) 2005-09-22 2005-09-22 Disconnecting device for an electrical conductor
US11/524,642 US7518483B2 (en) 2005-09-22 2006-09-21 Apparatus for the cutting of an electrical conductor
JP2006256144A JP4355719B2 (en) 2005-09-22 2006-09-21 Device for cutting electrical conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05020723A EP1768151B1 (en) 2005-09-22 2005-09-22 Disconnecting device for an electrical conductor

Publications (2)

Publication Number Publication Date
EP1768151A1 true EP1768151A1 (en) 2007-03-28
EP1768151B1 EP1768151B1 (en) 2008-03-26

Family

ID=35929732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05020723A Not-in-force EP1768151B1 (en) 2005-09-22 2005-09-22 Disconnecting device for an electrical conductor

Country Status (5)

Country Link
US (1) US7518483B2 (en)
EP (1) EP1768151B1 (en)
JP (1) JP4355719B2 (en)
AT (1) ATE390702T1 (en)
DE (1) DE502005003488D1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006027251A1 (en) * 2004-09-09 2006-03-16 Lisa Dräxlmaier GmbH Load shedder
DE102007014339A1 (en) * 2007-03-26 2008-10-02 Robert Bosch Gmbh Thermal fuse for use in electrical modules
FR3010827A1 (en) 2013-09-13 2015-03-20 Commissariat Energie Atomique SWITCH FOR SHORT CIRCUIT-SOURCE OF CONTINUOUS POWER VOLTAGE

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US5808253A (en) * 1995-04-06 1998-09-15 Fuji Electric Co., Ltd. Circuit-breaking apparatus

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US4342978A (en) * 1979-03-19 1982-08-03 S&C Electric Company Explosively-actuated switch and current limiting, high voltage fuse using same
US4385216A (en) * 1979-12-12 1983-05-24 Lucien Ferraz & Cie Circuit breaker devices with a pyrotechnically destructible conductor having a fuse system in parallel
US5808253A (en) * 1995-04-06 1998-09-15 Fuji Electric Co., Ltd. Circuit-breaking apparatus

Also Published As

Publication number Publication date
EP1768151B1 (en) 2008-03-26
JP4355719B2 (en) 2009-11-04
US7518483B2 (en) 2009-04-14
US20070066103A1 (en) 2007-03-22
DE502005003488D1 (en) 2008-05-08
JP2007087953A (en) 2007-04-05
ATE390702T1 (en) 2008-04-15

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