EP1768151B1 - Disconnecting device for an electrical conductor - Google Patents

Disconnecting device for an electrical conductor Download PDF

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Publication number
EP1768151B1
EP1768151B1 EP05020723A EP05020723A EP1768151B1 EP 1768151 B1 EP1768151 B1 EP 1768151B1 EP 05020723 A EP05020723 A EP 05020723A EP 05020723 A EP05020723 A EP 05020723A EP 1768151 B1 EP1768151 B1 EP 1768151B1
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EP
European Patent Office
Prior art keywords
conductor
accordance
sleeve
cutting device
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.)
Not-in-force
Application number
EP05020723A
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German (de)
French (fr)
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EP1768151A1 (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 DE502005003488T priority Critical patent/DE502005003488D1/en
Priority to AT05020723T priority patent/ATE390702T1/en
Priority to EP05020723A priority patent/EP1768151B1/en
Priority to JP2006256144A priority patent/JP4355719B2/en
Priority to US11/524,642 priority patent/US7518483B2/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 separating device according to the preamble of claim 1 (see. US-A-4,385,216 ).
  • Such device are used to disconnect an electrical conductor in order to be able to interrupt irreversible and fast high electrical currents, in particular direct currents during overload situations in emergency, with 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 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 sleeve need not necessarily be completely closed or circular.
  • 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.
  • the separating device has a conically widening piston.
  • 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, which is almost completely filled after separation 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 allows despite the extremely high mechanical precision requirements an inexpensive 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 at two opposite edges a plurality of form-fitting interconnectable, complementary trained sections have, which during winding to a Sleeve are inserted into each other. 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 separator with a tubular housing 10 made of plastic, in which an electrical conductor 11 is arranged.
  • an electrical conductor 11 which is formed in the region 12 of the housing to a closed, cylindrical sleeve, there is a pyrotechnic drive unit 14, which is connected to the conductor 11 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 which tapers conically from the drive 14 in the direction of the closed end of the expansion sleeve 22.
  • 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 settlement of a punched part made of sheet metal, from which the conductor 12 is made. 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.
  • FIG. 5 For mounting the in Fig. 1
  • the device shown in FIG Fig. 5 punched part shown 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 11.
  • 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 in the idle state, ie 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 segments of the expansion sleeve are accelerated radially outward or pushed so that the located between the slots 28 of the conductor 12 segments along the Shearing edge 34 sheared off.
  • Fig. 3 shows the device of Fig.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 essentially in that instead of the eyelets 36, a conductor 44 to be separated is crimped by crimp 46 in the tubular conductor 12.
  • 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 Trennvorrichtung nach dem Oberbegriff des Anspruchs 1 (vgl. US-A-4,385,216 ). Solche Vorrichtung dienen zum Trennen eines elektrischen Leiters, um bei Überlastsituationen im Notfall irreversibel und schnell hohe elektrische Ströme, insbesondere Gleichströme unterbrechen zu können, wobei pyrotechnische Antriebe verwendet werden, um den elektrischen Leiter mit Hilfe eines Trennelementes zu unterbrechen.The present invention relates to a separating device according to the preamble of claim 1 (see. US-A-4,385,216 ). Such device are used to disconnect an electrical conductor in order to be able to interrupt irreversible and fast high electrical currents, in particular direct currents during overload situations in emergency, with 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.The solution of this object is achieved by the features of claim 1.

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.

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. Die Hülse muss jedoch nicht notwendigerweise vollständig geschlossen oder kreisrund ausgebildet sein. 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. However, the sleeve need not necessarily be completely closed or circular. 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 konisch erweiternden Kolben 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 conically widening piston. 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, der 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, which is almost completely filled after separation 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 allows despite the extremely high mechanical precision requirements an inexpensive 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 at two opposite edges a plurality of form-fitting interconnectable, complementary trained sections have, which during winding to a Sleeve are inserted into each other. 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 Trennvorrichtung;
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 Trennvorrichtung; 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 a separation device;
Fig. 2
a section along the line II - II of Fig. 1 ;
Fig. 3
a longitudinal section through the embodiment of Fig. 1 after the separation process;
Fig. 4
a longitudinal section through a further embodiment of a separation device; and
Fig. 5
the development of a stamped part, which serves as an electrical conductor.

Fig. 1 zeigt einen Längsschnitt durch eine Trennvorrichtung mit einem rohrförmig ausgebildeten Gehäuse 10 aus Kunststoff, in dem ein elektrischer Leiter 11 angeordnet ist. Innerhalb des elektrischen Leiters 11, der im Bereich 12 des Gehäuses zu einer geschlossenen, zylinderförmigen Hülse geformt ist, befindet sich eine pyrotechnische Antriebseinheit 14, die mit dem Leiter 11 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 separator with a tubular housing 10 made of plastic, in which an electrical conductor 11 is arranged. Within the electrical conductor 11, which is formed in the region 12 of the housing to a closed, cylindrical sleeve, there is a pyrotechnic drive unit 14, which is connected to the conductor 11 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.In particular Fig. 5 shows, 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 which tapers conically from the drive 14 in the direction of the closed end of the expansion sleeve 22. 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 settlement of a punched part made of sheet metal, from which the conductor 12 is made. 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 11 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 in Fig. 1 The device shown in FIG Fig. 5 punched part shown 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 11. 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 in the idle state, ie 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. Moved on the piston 20 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 outward or pushed so that the located between the slots 28 of the conductor 12 segments along the Shearing edge 34 sheared off.

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 Fig.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. Fig. 4 shows a further embodiment of an apparatus for separating an electrical conductor, which differs from the embodiment described above essentially in that instead of the eyelets 36, a conductor 44 to be separated is crimped by crimp 46 in the tubular conductor 12. 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
1111
Leiterladder
1212
Hohlleiterwaveguide
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)

  1. A cutting apparatus comprising
    - an electrical conductor (11) which is arranged in a housing (10) and is made as a hollow conductor (12) in at least one section;
    - a pyrotechnic drive (14); and
    - a cutting device (20, 22) having a diverging piston (20),
    wherein, after the triggering of the drive (14), the cutting device (20, 22) enters into engagement with the interior of the hollow conductor (12) in the region of the section to cut said hollow conductor,
    characterized in that
    the cutting device has a spreading sleeve (22); and in that the housing (10) has a shearing edge (34) and a reception space (30) for segments of the hollow conductor (12) cut off by the cutting device.
  2. An apparatus in accordance with claim 1, characterized in that the hollow conductor (12) is made in sleeve form in the section; and in that the cutting device (20, 22) enters into engagement with the conductor (12) substantially along the total inner periphery of the sleeve after the triggering of the drive (14).
  3. An apparatus in accordance with claim 1 or claim 2, characterized in that the piston (20) diverges conically.
  4. An apparatus in accordance with claim 3, characterized in that the hollow conductor (12) and the spreading sleeve (22) have openings, in particular slits (26, 28), which coincide with one another.
  5. An apparatus in accordance with at least one of the preceding claims, characterized in that the cutting device has a piston (20) separable from the drive (14).
  6. An apparatus in accordance with at least one of the preceding claims, characterized in that it is made in tubular shape overall and has, at its two ends, connection means for cables, in particular eyelets (36) or crimp elements (46).
  7. An apparatus in accordance with at least one of the preceding claims, characterized in that reception space (30) is almost completely filled with parts of the conductor (11) and of the cutting device (22) after the cutting has taken place.
  8. An apparatus in accordance with at least one of the preceding claims, characterized in that the conductor (11) is a stamped part shaped at least sectionally to form a sleeve.
  9. An apparatus in accordance with claim 8, characterized in that the stamped part has a plurality of sections (38, 40) which are interconnectable in a shape matched manner and are made complementary to one another.
  10. An apparatus in accordance with at least one of the preceding claims, characterized in that the shearing edge (34) is ring-shaped.
  11. Use of a stamped part shaped at least sectionally to form a closed sleeve as an electrical conductor in an apparatus in accordance with claim 8.
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
DE502005003488T DE502005003488D1 (en) 2005-09-22 2005-09-22 Device for separating an electrical conductor
AT05020723T ATE390702T1 (en) 2005-09-22 2005-09-22 DEVICE FOR DISCONNECTING AN ELECTRICAL CONDUCTOR
EP05020723A EP1768151B1 (en) 2005-09-22 2005-09-22 Disconnecting device for an electrical conductor
JP2006256144A JP4355719B2 (en) 2005-09-22 2006-09-21 Device for cutting electrical conductors
US11/524,642 US7518483B2 (en) 2005-09-22 2006-09-21 Apparatus for the cutting of an electrical conductor

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 EP1768151A1 (en) 2007-03-28
EP1768151B1 true 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

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2091424A (en) * 1933-05-13 1937-08-31 Schweitzer & Conrad Inc Fuse
CH595005A5 (en) * 1976-06-21 1978-01-31 Bbc Brown Boveri & Cie
US4342978A (en) * 1979-03-19 1982-08-03 S&C Electric Company Explosively-actuated switch and current limiting, high voltage fuse using same
SE431590B (en) * 1979-09-03 1984-02-13 Bofors Ab CONTACT WITH HIGH FREQUENCY FILTER FOR AN ELECTRIC TENDER
FR2471662A1 (en) * 1979-12-12 1981-06-19 Ferraz & Cie Lucien IMPROVEMENTS IN PYROTECHNIC DESTRUCIBLE-CONDUCTIVE CUTTING DEVICES WITH FUSE-IN-LEFT SYSTEM
US4417519A (en) * 1981-06-04 1983-11-29 Mcdonnell Douglas Corporation Explosive switch
US4479105A (en) * 1983-03-08 1984-10-23 G & W Electric Company Pyrotechnic current interrupter
DE3437829C1 (en) * 1984-10-16 1992-01-02 Minnesota Mining And Manufacturing Co., Saint Paul, Minn. Electrical connector, in particular for telecommunications distributors
DE3709376C1 (en) * 1987-03-20 1988-05-26 Krone Ag Insulation displacement contact
US4852494A (en) * 1987-11-16 1989-08-01 Williams Robert A Explosively actuated switch
JPH0714254B2 (en) * 1989-07-11 1995-02-15 ウチヤ・サーモスタット株式会社 Automatic power breakers and relays and flood detectors for automatic power breakers
US5483210A (en) * 1994-04-08 1996-01-09 Abb Power T&D Company Inc. Mechanical guidance system for switcher interrupter and method for assembling the same
JP3367265B2 (en) * 1995-04-06 2003-01-14 富士電機株式会社 Current interrupter
DE19529893A1 (en) * 1995-08-14 1997-02-20 Whitaker Corp Electrical connector
FR2788165B1 (en) * 1998-12-30 2001-02-02 Pyroalliance ELECTRIC CONTACTOR WITH PYROTECHNIC OPERATION
JP3737654B2 (en) * 1999-08-23 2006-01-18 矢崎総業株式会社 Power shut-off device
JP3691299B2 (en) * 1999-08-23 2005-09-07 矢崎総業株式会社 Gas power shut-off device

Also Published As

Publication number Publication date
DE502005003488D1 (en) 2008-05-08
ATE390702T1 (en) 2008-04-15
EP1768151A1 (en) 2007-03-28
US20070066103A1 (en) 2007-03-22
JP2007087953A (en) 2007-04-05
JP4355719B2 (en) 2009-11-04
US7518483B2 (en) 2009-04-14

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