EP1403893B1 - Cartridge fuse particularly for low-voltage high-power fuses - Google Patents

Cartridge fuse particularly for low-voltage high-power fuses Download PDF

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Publication number
EP1403893B1
EP1403893B1 EP02021627A EP02021627A EP1403893B1 EP 1403893 B1 EP1403893 B1 EP 1403893B1 EP 02021627 A EP02021627 A EP 02021627A EP 02021627 A EP02021627 A EP 02021627A EP 1403893 B1 EP1403893 B1 EP 1403893B1
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EP
European Patent Office
Prior art keywords
fuse
fuse link
spring
link according
indicator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02021627A
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German (de)
French (fr)
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EP1403893A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jean Mueller Elektrotechnische Fabrik GmbH
ETI Elektroelement dd
Original Assignee
Jean Mueller Elektrotechnische Fabrik GmbH
ETI Elektroelement dd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jean Mueller Elektrotechnische Fabrik GmbH, ETI Elektroelement dd filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Priority to SI200230103T priority Critical patent/SI1403893T1/en
Priority to EP02021627A priority patent/EP1403893B1/en
Priority to ES02021627T priority patent/ES2237641T3/en
Priority to DE50202428T priority patent/DE50202428D1/en
Priority to AT02021627T priority patent/ATE290718T1/en
Publication of EP1403893A1 publication Critical patent/EP1403893A1/en
Application granted granted Critical
Publication of EP1403893B1 publication Critical patent/EP1403893B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
    • H01H85/303—Movable indicating elements

Definitions

  • the invention relates to a fuse link, in particular for low-voltage high-performance fuses (NH fuses), with one in a housing arranged working conductor and with a Display device which has a display element on the front side and on the lateral surface having the fuse insert, wherein the display element of one arranged in the housing, electrically parallel to the working conductor is located fixed in a prestressed position, which at the Front portion of the display element attacks, and the end portion of the display element Loosely applied to a housing closing the cover plate.
  • NH fuses low-voltage high-performance fuses
  • Such a fuse link is known from DE-PS 1 034 751.
  • the display element consists of a slider which is displaceable in the longitudinal direction in or on the wall of the housing designed as an insulating body is guided.
  • the slide is under spring pressure and protrudes to the display a mark attached to the end of the slider over the cover plate of the fuse link out while the indicator on the lateral surface through Visible to a mark attached to the other end of the slider in an opening of the housing takes place.
  • the projecting beyond the cover plate End has a turn on which the indicator fusible conductor acts.
  • a coil spring for acting on the slider is in the frontal Recess of the housing used. - This design with in the Recess integrated spring is right under structural and mounting aspects consuming.
  • the display element can be sufficient when the fuse is triggered be moved, which causes the displacement of the display element Spring is arranged inside the housing. Also changed in the case of triggering the fuse beyond the cover plate Forehead portion of the display element does not have its shape. This is for that Detecting the tripped state of the fuse adversely.
  • DE 197 44 535 A1 is a fuse link with front and center detectors described in which the protruding from the fuse insert end portion of the display element is designed as a spring plate, the two leg sections having.
  • the one leg section is placed in the shell section of the display element, which is the frontal recess of the housing penetrated while the other leg of the front portion of the display element between the cover plate and the housing is clamped.
  • the spring relaxes, leaving itself spread the two legs of the front portion of the display element and thus with the shell portion of the display element, as it were Forming a triangle.
  • the viewer facing surface of the end portion the display element is positioned obliquely to the cover plate.
  • WO 99/40599 is a fuse link with front and center detectors known, in which the end portion of the display element is formed as a spring is, which has Z-shape.
  • the cover plate facing parallel leg the spring has an opening which is provided with a filling opening for extinguishing sand in the cover plate is aligned. An inserted in the holes plug connects this Leg of the spring with the cover plate, which determines the display element is.
  • WO 98/07172 is a fuse link with front and center detectors known in which the skirt portion of the display element outside of Housing is guided between this and a cover of the housing. The simply angled end portion of the display element is located on the Cover plate on. The electrical connection in parallel connection of the display melting conductor to the working fusible conductor takes place via the blade contact of the Securing by ripping the display element on the blade contact. Sofem the spring element of a material which is not sufficiently electrically conductive is provided, an electrically conductive layer in the area between to provide for the attachment of the display fuse and the blade contact. If the cover plate is made of insulating material, it will be for reasons the Berstoffschutzes considered advantageous, the spring element electrically insulating to coat. Is in such a fuse power over initiates the knife contact facing the end detector, this leads to that when triggered fuse, the spring element is not unlocked, thus remains under tension.
  • Object of the present invention is to provide a fuse link of said Type to continue to form so that when triggered the fuse triggered State clearly by a large displacement of the display element can be recognized.
  • the display element should also be easily formed and easy to mount, as well as captive in the housing of the fuse link be held.
  • the problem is solved in a fuse link of the aforementioned Type in that the forehead section Loosely on a closing the housing Cover plate rests and a facility for limiting the displacement of the display element when triggered the fuse is provided.
  • the display element is thus loosely positioned, so not on the housing or the housing occlusive Cover plate attached.
  • the assembly of the display element can thus by easy plugging done.
  • the Z-shape of the spring ensures a very large parallel displacement of the parallel legs of the spring and thus a straight-line displacement of the shell portion of the display element.
  • the large displacement of the display element when triggering the fuse Ensures that the untripped or tripped state of the fuse both in the area of the end detector and in the area of the lateral surface located center detector can be reliably detected. So that the display element, when triggering the fuse and thus severing the indicator melt timer, is held captive, the extension movement of Indicator limited by a projection attached to this, the at a defined extension a return of the recess in Housing jacket touched.
  • the display element is under both manufacturing and under Optimized assembly points when it is integrally formed. Especially it is formed as a bent or bent leaf spring made of metal.
  • the shell portion of the display element passes through, wherein the housing in the region of the frontal recess has an opening to the outside, can so, upon displacement of the shell portion of the display element in accordance with the region of the display element which is aligned with the opening, due to the color specification of the switching state of the fuse be recognized.
  • the travel limit of the display element when triggering the fuse can be accomplished in different ways. Especially easy the travel limit occurs when the jacket portion with a lateral projection is provided, in operative connection with the cover plate or between the cover plate and the housing arranged sealing plate can be brought.
  • the lateral projection can be easily generated by the manufacturing of the display element, a small lateral web of the shell section in Type of a barb is bent out. It is also a form the shell portion conceivable that ensures this function.
  • the indicator fusible conductor is preferably with the outer parallel leg connected to the Z-shaped spring. This can be done in a simple way happen that the outer leg with the wire end in clamp-cutting technique connected is.
  • the cover plate in the fuse link is non-conductive.
  • the electrical contact of the display semiconductor so via the spring that they, in the means of the display melted conductor tensioned Condition, this cover plate facing bearing plate / knife plate contacted by the blade contact of the fuse.
  • the contact can this is done in different ways. happens the power supply into the fuse link via the blade contact that the Spring facing, a triggering of the fuse causes this blade contact still under tension.
  • the knife contact which is plugged into a receptacle contact, usually against unauthorized Touched secured. So that the display element is not live, provides a preferred embodiment of the invention that it is triggered at Fuse is unlocked.
  • the activation of the display element takes place in particular by the fact that the inner parallel leg of the spring inserted into a recess of the cover plate is.
  • the electrical contacting takes place via the transition region of outer leg of the spring and the two parallel legs of the spring connecting diagonal section of the spring, said transition area is formed in particular bead-like.
  • the formation of the recess of the cover plate is also under the aspect of optimal positioning of the spring, especially to see during their installation.
  • adjusting the receiving surface of the recess and the surface of the inner Parallel leg is just a movement of the spring in the plane of the recess, possible with little play.
  • the spring can certainly be designed so that it with its inner Leg permanently contacted the bearing plate of the blade contact.
  • the NH fuse-link 1 shown in Figure 1 consists essentially of a hollow housing 2 made of insulating material, the two Ends are closed with cover plates 3 and 4 of insulating material. Between the cover plates 3 and 4 and the housing 2 are sealing plates. 5 held. The connection of the cover plates and sealing plates with the housing 2 via screws, not shown. Slot-shaped openings in the cover plates and sealing plates enforce contact blades 6 and 7, which is a structural unit form with knife holding plates 8 and 9. These are located inside the housing 2 arranged on the cover plates 3 and 4 at. With approaches of contact blades 6 and 7, which protrude with respect to the knife holding plates 8 and 9, is a working fuse 10 electrically connected.
  • the through the housing 2 and the sealing plates 5 and cover plates 3 and 4 limited interior of the fuse link is filled with extinguishing sand.
  • the housing 2 is in the region of the cover plate 4 with an end-side recess 12 provided.
  • the housing 2 has in the region of the cover plate 3 facing End of the frontal recess 12 an opening 13 after on the outside, for example, has circular cross-section.
  • the cover plate 4 In the flight of the frontal Recess is the cover plate 4 with a passing through this Slot 14 provided.
  • a flat depression 15 At this closes on the housing 2 facing away from Side a flat depression 15, which extends to the bearing plate 9.
  • this is recessed through a narrow window 16 Area of the cover plate 4 accessible.
  • the cover plate 4 extends to to the contact blade 7.
  • the Cover plate 4 is provided with a more recessed portion 17, wherein this Area facing wall section 18 of the cover plate 4, at least on the the window 16 side facing is limited by a projection 19.
  • the arranged in this area display element 20 is made of sheet metal and has a shell portion 21, a bent perpendicular to this outer leg 22, one of this leg 22 on the shell portion 21 directed diagonal leg 23 and one with this connected, inner leg 24, which is arranged parallel to the outer leg 22 is on.
  • the transition from leg 22 to leg 23 takes place with it not as an acute-angled kink, but in the manner of a thickened bead 25, which is trimmed on the window 16.
  • the display element 20 is the with the end face of the fuse link 1 engageable end portion as a Z-shaped Spring formed, which is formed by the legs 22, 23 and 24.
  • the jacket section 21, however, is assigned to the jacket of the fuse link 1.
  • the display fuse 11 passes through holes not illustrated in detail the legs 22, 23 and 24.
  • the display element 20 is mounted from the outside, by passing through at the legs 22, 23 and 24 threaded indicator fusion 11, which passes through an unillustrated hole in the cover plate 4, the Jacket section 21 of the display element 20 in the frontal recess 12 is inserted.
  • tensioning the spring of the display element 20 by Acting on the leg 22 the legs 22, 23 and 24 against each other moves, as shown in Figures 1 and 2, and it is located the shell portion 21 in its fully in the frontal recess 12 inserted position. In this position, the in the field of other cover plate 3 fixed display fuse 11 with his the spring facing end by means of insulation displacement technology connected to the leg 22.
  • the retracted position covers the shell portion 21 in the region of his free end of the opening 13 in the housing 2 from.
  • the Jacket section 21 facing the opening 13, with a color marking provided, marked red, for example.
  • the outer leg 22 and the this facing visible part of the extended shell portion 21st can have a color marking on the side facing away from the housing 2, be formed red, for example, so that they stand out as detector components.
  • the bead 25 contacts the bearing plate 9.
  • the inner leg 24 of the spring is in the recessed area 17 of the insulating material existing cover plate 4 out and in particular over positioned the projection 19 to the contact blade 7 out. In this position stands out the end portion of the spring not from the recessed area 17th
  • the shell portion 21 is at a distance from the cover plate 4, the movement the shell portion 21 when triggering the fuse, thus the Blowing the display fusion conductor 11 and the relaxation of the spring corresponds, provided with a deflection 27, thus from the plane of the Leaf spring protrudes.
  • the displaced display element 20 comes with the deflection 27th against the cover plate 4 in the region of the slot 14, so that the shell portion 21 does not move further out of the frontal recess 12 can.
  • the color marking of the jacket portion 21 from the Area of the aperture 13 moved out and thus, in the area of the center detector, the tripped state of the fuse signals.
  • Figures 5 to 7 differs from that according to Figures 1 and 4 only in that between the legs 22nd and 23 no bead 25 is formed, which consists of insulating material Cover plate 4 has no projection 19 and instead the inner leg 24 is longer.
  • the leg 24 is formed with a well-contacting one Provided end 28, which contacts the bearing plate 9 in the region of the window 16.
  • a plastic cover 29 is provided, attached to the outer leg 22 or inserted into the recess 15 is.
  • FIG. 8 to 11 differs from the Both first described embodiments in that conductive cover plates 3 and 4 are provided. As a result, the inner leg 24 is located directly to the cover plate 4. It has no recess 15.
  • These Embodiment represents the structurally simplest designed. In this Design is the leg 24 preferably with a molded, well-contacting End provided.

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  • Fuses (AREA)

Abstract

The fuse insert (1) has a housing (2) containing a working fuse conductor (10) and a display device with a display element (20) held in position by a display fuse conductor (11), parallel to the working fuse conductor within the housing, engaging an end section (22,23,24) of the display element provided by a Z-shaped spring with its parallel arms parallel to the cover plate (4) of the housing. A stop (27) limits the movement of the display element upon release of the fuse.

Description

Die Erfindung betrifft einen Sicherungseinsatz, insbesondere für Niederspannungs-Hochleistungs-Sicherungen (NH-Sicherungen), mit einem in einem Gehäuse angeordneten Arbeitsschmelzleiter und mit einer Anzeigeeinrichtung, die ein Anzeigeelement an der Stirnseite und an der Mantelfläche des Sicherungseinsatzes aufweist, wobei das Anzeigeelement von einem im Gehäuse angeordneten, elektrisch parallel zum Arbeitsschmelzleiter befindlichen Anzeigeschmelzleiter in vorgespannter Lage fixiert ist, der an dem Stirnabschnitt des Anzeigeelementes angreift, sowie der Stirnabschnitt des Anzeigeelementes lose an einer das Gehäuse verschließenden Deckplatte anliegt.The invention relates to a fuse link, in particular for low-voltage high-performance fuses (NH fuses), with one in a housing arranged working conductor and with a Display device which has a display element on the front side and on the lateral surface having the fuse insert, wherein the display element of one arranged in the housing, electrically parallel to the working conductor is located fixed in a prestressed position, which at the Front portion of the display element attacks, and the end portion of the display element Loosely applied to a housing closing the cover plate.

Ein derartiger Sicherungseinsatz ist aus der DE-PS 1 034 751 bekannt. Dort besteht das Anzeigeelement aus einem Schieber, der in Längsrichtung verschiebbar in oder an der Wandung des als Isolierkörper ausgebildeten Gehäuses geführt ist. Der Schieber steht unter Federdruck und ragt zur Anzeige mit einer am Ende des Schiebers angebrachten Marke über die Deckplatte des Sicherungseinsatzes hinaus, während die Anzeige an der Mantelfläche durch Sichtbarwerden einer am anderen Ende des Schiebers angebrachten Marke in einer Durchbrechung des Gehäuses erfolgt. Das über die Deckplatte hinausragende Ende weist eine Abbiegung auf, an der der Anzeigeschmelzleiter angreift. Eine Schraubenfeder zum Beaufschlagen des Schiebers ist in die stirnseitige Ausnehmung des Gehäuses eingesetzt. - Diese Gestaltung mit in die Ausnehmung integrierter Feder ist unter baulichen und Montageaspekten recht aufwendig. Das Anzeigeelement kann zwar beim Auslösen der Sicherung ausreichend verschoben werden, die die Verschiebung des Anzeigeelementes bewirkende Feder ist aber innerhalb des Gehäuses angeordnet. Außerdem verändert im Fall des Auslösens der Sicherung der über die Deckplatte hinausstehende Stirnabschnitt des Anzeigeelementes seine Form nicht. Dies ist für das Erkennen des ausgelösten Zustandes der Sicherung nachteilig.Such a fuse link is known from DE-PS 1 034 751. There the display element consists of a slider which is displaceable in the longitudinal direction in or on the wall of the housing designed as an insulating body is guided. The slide is under spring pressure and protrudes to the display a mark attached to the end of the slider over the cover plate of the fuse link out while the indicator on the lateral surface through Visible to a mark attached to the other end of the slider in an opening of the housing takes place. The projecting beyond the cover plate End has a turn on which the indicator fusible conductor acts. A coil spring for acting on the slider is in the frontal Recess of the housing used. - This design with in the Recess integrated spring is right under structural and mounting aspects consuming. Although the display element can be sufficient when the fuse is triggered be moved, which causes the displacement of the display element Spring is arranged inside the housing. Also changed in the case of triggering the fuse beyond the cover plate Forehead portion of the display element does not have its shape. This is for that Detecting the tripped state of the fuse adversely.

In der DE 197 44 535 A1 ist ein Sicherungseinsatz mit Stirn- und Mittenmelder beschrieben, bei dem der aus dem Sicherungseinsatz herausragende Stirnabschnitt des Anzeigeelementes als Federblech ausgebildet ist, das zwei Schenkelabschnitte aufweist. Der eine Schenkelabschnitt setzt sich in den Mantelabschnitt des Anzeigeelementes fort, das die stirnseitige Ausnehmung des Gehäuses durchsetzt, während der andere Schenkel des Stirnabschnittes des Anzeigeelementes zwischen der Deckplatte und dem Gehäuse eingeklemmt ist. In DE 197 44 535 A1 is a fuse link with front and center detectors described in which the protruding from the fuse insert end portion of the display element is designed as a spring plate, the two leg sections having. The one leg section is placed in the shell section of the display element, which is the frontal recess of the housing penetrated while the other leg of the front portion of the display element between the cover plate and the housing is clamped.

Beim Auslösen der Sicherung entspannt sich die Feder, so dass sich die beiden Schenkel des Stirnabschnittes des Anzeigeelementes aufspreizen und demzufolge mit dem Mantelabschnitt des Anzeigeelementes quasi ein Dreieck bilden. Die dem Betrachter zugewandte Fläche des Stirnabschnittes des Anzeigeelementes ist schräg zur Deckplatte positioniert.When triggering the fuse, the spring relaxes, leaving itself spread the two legs of the front portion of the display element and thus with the shell portion of the display element, as it were Forming a triangle. The viewer facing surface of the end portion the display element is positioned obliquely to the cover plate.

Aus der WO 99/40599 ist ein Sicherungseinsatz mit Stirn- und Mittenmelder bekannt, bei der der Stirnabschnitt des Anzeigeelementes als Feder ausgebildet ist, die Z-Form aufweist. Der der Deckplatte zugewandte parallele Schenkel der Feder weist eine Öffnung auf, die mit einer Befüllöffnung für Löschsand in der Deckplatte fluchtet. Ein in die Löcher gesteckter Stopfen verbindet diesen Schenkel der Feder mit der Deckplatte, womit das Anzeigeelement festgelegt ist.From WO 99/40599 is a fuse link with front and center detectors known, in which the end portion of the display element is formed as a spring is, which has Z-shape. The cover plate facing parallel leg the spring has an opening which is provided with a filling opening for extinguishing sand in the cover plate is aligned. An inserted in the holes plug connects this Leg of the spring with the cover plate, which determines the display element is.

Aus der WO 98/07172 ist ein Sicherungseinsatz mit Stirn- und Mittenmelder bekannt, bei dem der Mantelabschnitt des Anzeigeelementes außerhalb des Gehäuses zwischen diesem und einer Abdeckung des Gehäuses geführt ist. Der einfach abgewinkelte Stirnabschnitt des Anzeigeelementes liegt an der Deckplatte an. Die elektrische Verbindung in Parallelschaltung des Anzeigeschmelzleiters zum Arbeitsschmelzleiter erfolgt über den Messerkontakt der Sicherung durch Aufreiten des Anzeigeelementes auf dem Messerkontakt. Sofem das Federelement aus einem nicht ausreichend elektrisch leitenden Material besteht, ist vorgesehen, eine elektrisch leitende Schicht im Bereich zwischen der Anbringung des Anzeigeschmelzleiters und dem Messerkontakt vorzusehen. Ist die Deckplatte aus Isoliermaterial gefertigt, wird es aus Gründen des Berührschutzes als vorteilhaft angesehen, das Federelement elektrisch isolierend zu beschichten. Wird bei einem solchen Sicherungseinsatz Strom über den dem Stirnmelder zugewandten Messerkontakt eingeleitet, führt dies dazu, dass bei ausgelöster Sicherung das Federelement nicht freigeschaltet ist, somit weiterhin unter Spannung steht.From WO 98/07172 is a fuse link with front and center detectors known in which the skirt portion of the display element outside of Housing is guided between this and a cover of the housing. The simply angled end portion of the display element is located on the Cover plate on. The electrical connection in parallel connection of the display melting conductor to the working fusible conductor takes place via the blade contact of the Securing by ripping the display element on the blade contact. Sofem the spring element of a material which is not sufficiently electrically conductive is provided, an electrically conductive layer in the area between to provide for the attachment of the display fuse and the blade contact. If the cover plate is made of insulating material, it will be for reasons the Berührschutzes considered advantageous, the spring element electrically insulating to coat. Is in such a fuse power over initiates the knife contact facing the end detector, this leads to that when triggered fuse, the spring element is not unlocked, thus remains under tension.

Unter dem Aspekt des Berührschutzes ist es aus der DE 90 06 337 U1 bekannt, nicht nur die stirnseitigen Deckplatten eines Sicherungseinsatzes aus Isoliermaterial zu fertigen, sondern auch die stirnseitige Anzeigefeder mit einer Isolierstoffhaube zu überziehen.From the aspect of contact protection, it is known from DE 90 06 337 U1, not just the frontal cover plates of a fuse made of insulating material to manufacture, but also the frontal display spring with a Cover insulating material hood.

Aufgabe der vorliegenden Erfindung ist es, einen Sicherungseinsatz der genannten Art so weiter zu bilden, dass beim Auslösen der Sicherung der ausgelöste Zustand durch einen großen Verschiebeweg des Anzeigeelementes eindeutig erkannt werden kann. Das Anzeigeelement soll zudem einfach gebildet und einfach montierbar sein, sowie verliersicher im Gehäuse des Sicherungseinsatzes gehalten sein.Object of the present invention is to provide a fuse link of said Type to continue to form so that when triggered the fuse triggered State clearly by a large displacement of the display element can be recognized. The display element should also be easily formed and easy to mount, as well as captive in the housing of the fuse link be held.

Gelöst wird die Aufgabe bei einem Sicherungseinsatz der eingangs genannten Art dadurch, dass der Stirnabschnitt lose an einer das Gehäuse verschließenden Deckplatte anliegt und eine Einrichtung zum Begrenzen der Verschiebung des Anzeigeelementes beim Auslösen der Sicherung vorgesehen ist.The problem is solved in a fuse link of the aforementioned Type in that the forehead section Loosely on a closing the housing Cover plate rests and a facility for limiting the displacement of the display element when triggered the fuse is provided.

Bei dem erfindungsgemäßen Sicherungseinsatz ist das Anzeigeelement somit lose positioniert, demnach nicht am Gehäuse oder das Gehäuse verschließenden Deckplatte befestigt. Die Montage des Anzeigeelementes kann somit durch einfaches Stecken erfolgen. Die Z-Form der Feder gewährleistet einen sehr großen parallelen Verschiebeweg der parallelen Schenkel der Feder und damit einen geradlinigen Verschiebeweg des Mantelabschnittes des Anzeigeelementes. Die große Verlagerung des Anzeigeelementes beim Auslösen der Sicherung stellt sicher, dass der nicht ausgelöste bzw. ausgelöste Zustand der Sicherung sowohl im Bereich des Stirnmelders als auch des im Bereich der Mantelfläche befindlichen Mittenmelders sicher erkannt werden kann. Damit das Anzeigeelement, bei Auslösung der Sicherung und damit Durchtrennen des Anzeigeschmelzteiters, verliersicher gehalten ist, ist die Ausfahrbewegung des Anzeigeelementes durch einen an diesem befestigten Vorsprung begrenzt, der bei einem definierten Ausfahrweg einen Rücksprung der Ausnehmung im Gehäusemantel berührt. In the fuse link according to the invention, the display element is thus loosely positioned, so not on the housing or the housing occlusive Cover plate attached. The assembly of the display element can thus by easy plugging done. The Z-shape of the spring ensures a very large parallel displacement of the parallel legs of the spring and thus a straight-line displacement of the shell portion of the display element. The large displacement of the display element when triggering the fuse Ensures that the untripped or tripped state of the fuse both in the area of the end detector and in the area of the lateral surface located center detector can be reliably detected. So that the display element, when triggering the fuse and thus severing the indicator melt timer, is held captive, the extension movement of Indicator limited by a projection attached to this, the at a defined extension a return of the recess in Housing jacket touched.

Das Anzeigeelement ist sowohl unter Herstellungs- als auch unter Montagegesichtspunkten optimiert, wenn es einstückig ausgebildet ist. Insbesondere ist es als gebogene bzw. geknickte Blattfeder aus Metall ausgebildet. Um Positionen des Anzeigeelementes besonders gut erkennen zu können, sollten insbesondere der äußere parallele Schenkel des Stirnabschnittes und das Ende des Mantelabschnittes des Anzeigeelementes farbig gestaltet sein. Für den Fall, dass das Gehäuse mit einer stirnseitigen Ausnehmung versehen ist, den der Mantelabschnitt des Anzeigeelementes durchsetzt, wobei das Gehäuse im Bereich der stirnseitigen Ausnehmung eine Durchbrechung nach außen aufweist, kann so, bei Verschiebung des Mantelabschnittes des Anzeigeelementes entsprechend dem mit der Durchbrechung fluchtenden Bereich des Anzeigeelementes, aufgrund der Farbangabe der Schaltzustand der Sicherung erkannt werden.The display element is under both manufacturing and under Optimized assembly points when it is integrally formed. Especially it is formed as a bent or bent leaf spring made of metal. In order to recognize positions of the display element particularly well, should in particular the outer parallel leg of the front portion and the Be designed colored end of the shell portion of the display element. For the case that the housing is provided with a frontal recess, the shell portion of the display element passes through, wherein the housing in the region of the frontal recess has an opening to the outside, can so, upon displacement of the shell portion of the display element in accordance with the region of the display element which is aligned with the opening, due to the color specification of the switching state of the fuse be recognized.

Die Wegbegrenzung des Anzeigeelementes beim Auslösen der Sicherung kann auf unterschiedliche Art und Weise bewerkstelligt werden. Besonders einfach erfolgt die Wegbegrenzung, wenn der Mantelabschnitt mit einem seitlichen Vorsprung versehen ist, der in Wirkverbindung mit der Deckplatte oder einer zwischen der Deckplatte und dem Gehäuse angeordneten Dichtplatte bringbar ist. Der seitliche Vorsprung kann einfach erzeugt werden, indem beim Herstellen des Anzeigeelementes ein kleiner seitlicher Steg aus dem Mantelabschnitt in Art eines Widerhakens herausgebogen wird. Es ist aber auch eine Ausformung des Mantelabschnitts denkbar, die diese Funktion gewährleistet.The travel limit of the display element when triggering the fuse can be accomplished in different ways. Especially easy the travel limit occurs when the jacket portion with a lateral projection is provided, in operative connection with the cover plate or between the cover plate and the housing arranged sealing plate can be brought. The lateral projection can be easily generated by the manufacturing of the display element, a small lateral web of the shell section in Type of a barb is bent out. It is also a form the shell portion conceivable that ensures this function.

Der Anzeigeschmelzleiter ist vorzugsweise mit dem äußeren parallelen Schenkel der Z-förmigen Feder verbunden. Dies kann auf einfache Art und Weise dadurch geschehen, dass der äußere Schenkel mit dem Drahtende in Klemm-Schneid-Technik verbunden ist.The indicator fusible conductor is preferably with the outer parallel leg connected to the Z-shaped spring. This can be done in a simple way happen that the outer leg with the wire end in clamp-cutting technique connected is.

Gemäß einer besonderen Ausführungsform ist vorgesehen, dass bei dem Sicherungseinsatz die Deckplatte nichtleitend ist. In diesem Fall ist insbesondere vorgesehen, dass die elektrische Kontaktierung des Anzeigeschmelzleiters so über die Feder erfolgt, dass sie, im mittels des Anzeigeschmelzleiters gespanntem Zustand, die dieser Deckplatte zugewandte Lagerplatte/Messerhalteplatte des Messerkontaktes der Sicherung kontaktiert. Die Kontaktierung kann hierbei auf unterschiedliche Art und Weise erfolgen. Geschieht die Stromeinspeisung in den Sicherungseinsatz über denjenigen Messerkontakt, der der Feder zugewandt ist, führt ein Auslösen der Sicherung dazu, dass dieser Messerkontakt nach wie vor unter Spannung steht. Allerdings ist der Messerkontakt, der in einen Aufnahmekontakt eingesteckt ist, in aller Regel gegen unbefugtes Berühren gesichert. Damit das Anzeigeelement nicht unter Spannung steht, sieht eine bevorzugte Weiterbildung der Erfindung vor, dass es bei ausgelöster Sicherung freigeschaltet ist.According to a particular embodiment, it is provided that in the fuse link the cover plate is non-conductive. In this case, in particular provided that the electrical contact of the display semiconductor so via the spring, that they, in the means of the display melted conductor tensioned Condition, this cover plate facing bearing plate / knife plate contacted by the blade contact of the fuse. The contact can this is done in different ways. Happens the power supply into the fuse link via the blade contact that the Spring facing, a triggering of the fuse causes this blade contact still under tension. However, the knife contact, which is plugged into a receptacle contact, usually against unauthorized Touched secured. So that the display element is not live, provides a preferred embodiment of the invention that it is triggered at Fuse is unlocked.

Die Freischaltung des Anzeigeelementes erfolgt insbesondere dadurch, dass der innere Parallelschenkel der Feder in eine Vertiefung der Deckplatte eingesetzt ist. Die elektrische Kontaktierung erfolgt über den Übergangsbereich von äußerem Schenkel der Feder und dem die beiden parallelen Schenkel der Feder verbindenden Diagonalabschnitt der Feder, wobei dieser Übergangsbereich insbesondere wulstartig ausgebildet ist. Bei gespanntem Anzeigeschmelzleiter kontaktiert der Wulst die Lagerplatte des Messerkontaktes, während bei durchtrenntem Anzeigeschmelzleiter die Kontaktierung im Bereich des Wulstes aufgehoben wird.The activation of the display element takes place in particular by the fact that the inner parallel leg of the spring inserted into a recess of the cover plate is. The electrical contacting takes place via the transition region of outer leg of the spring and the two parallel legs of the spring connecting diagonal section of the spring, said transition area is formed in particular bead-like. When the indicator is stretched contacted the bead, the bearing plate of the blade contact, while in durchtrenntem Display fusion conductor the contact in the region of the bead lifted becomes.

Die Ausbildung der Vertiefung der Deckplatte ist zudem unter dem Aspekt der optimalen Positionierung der Feder, insbesondere bei deren Montage zu sehen. Bei Anpassung der Aufnahmefläche der Vertiefung und der Fläche des inneren Parallelschenkels ist nur eine Bewegung der Feder in der Ebene der Vertiefung, bei geringem Spiel möglich.The formation of the recess of the cover plate is also under the aspect of optimal positioning of the spring, especially to see during their installation. When adjusting the receiving surface of the recess and the surface of the inner Parallel leg is just a movement of the spring in the plane of the recess, possible with little play.

Wird Strom hingegen von der anderen Seite eingespeist, ist nach dem Auslösen der Sicherung der der Feder zugewandte Messerkontakt spannungsfrei. In diesem Fall kann die Feder durchaus so gestaltet sein, dass sie mit ihrem inneren Schenkel dauerhaft die Lagerplatte des Messerkontaktes kontaktiert.If, on the other hand, electricity is fed from the other side, it will be triggered the fuse of the spring-facing blade contact voltage-free. In In this case, the spring can certainly be designed so that it with its inner Leg permanently contacted the bearing plate of the blade contact.

Weitere Merkmale der Erfindung sind in den Unteransprüchen, der Beschreibung der Figuren und den Figuren selbst dargestellt, wobei bemerkt wird, dass alle Einzelmerkmale und alle Kombinationen von Einzelmerkmalen erfindungswesentlich sind.Further features of the invention are in the subclaims, the description the figures and the figures themselves, it being noted that all individual features and all combinations of individual features essential to the invention.

In den Figuren ist die Erfindung anhand mehrerer Ausführungsformen dargestellt, ohne auf diese beschränkt zu sein. Es zeigt:

Figur 1
eine erste Ausführungsform des erfindungsgemäßen Sicherungseinsatzes mit isolierter Grifflasche, in einem Mittellängsschnitt, bei nicht ausgelöstem Zustand der Sicherung,
Figur 2
eine Detaildarstellung des in Figur 1 veranschaulichten Sicherungseinsatzes,
Figur 3
den in Figur 1 gezeigten Sicherungseinsatz bei ausgelöster Sicherung,
Figur 4
eine Detaildarstellung der ausgelösten Sicherung entsprechend der Darstellung in Figur 2,
Figur 5
für eine zweite Ausführungsform mit isolierter Grifflasche des Sicherungseinsatzes, in einer Stirnansicht,
Figur 6
einen Längsmittelschnitt des in Figur 5 dargestellten Sicherungseinsatzes, bei ausgelöster Sicherung,
Figur 7
einen Bereich des in Figur 6 gezeigten Sicherungseinsatzes, bei nicht ausgelöster Sicherung,
Figur 8
eine dritte Ausführungsform des Sicherungseinsatzes, mit spannungsführender Grifflasche, in einem Längsmittelschnitt, bei nicht ausgelöster Sicherung,
Figur 9
ein Detail des Sicherungseinsatzes in vergrößerter Darstellung,
Figur 10
eine Stirnansicht des Sicherungseinsatzes und
Figur 11
einen Längsmittelschnitt des Sicherungseinsatzes gemäß Figur 8, allerdings bei ausgelöster Sicherung.
In the figures, the invention is illustrated by means of several embodiments, without being limited thereto. It shows:
FIG. 1
a first embodiment of the fuse link according to the invention with insulated grip tab, in a central longitudinal section, in non-triggered state of the fuse,
FIG. 2
a detailed view of the illustrated in Figure 1 fuse link,
FIG. 3
the fuse link shown in Figure 1 when triggered fuse,
FIG. 4
a detailed representation of the triggered fuse as shown in Figure 2,
FIG. 5
for a second embodiment with insulated gripping tab of the fuse link, in an end view,
FIG. 6
a longitudinal center section of the fuse link shown in Figure 5, when triggered fuse,
FIG. 7
a region of the fuse link shown in Figure 6, in non-triggered fuse,
FIG. 8
a third embodiment of the fuse link, with live gripping tab, in a longitudinal center section, when not triggered fuse,
FIG. 9
a detail of the fuse link in an enlarged view,
FIG. 10
an end view of the fuse link and
FIG. 11
a longitudinal center section of the fuse link according to Figure 8, but with triggered fuse.

Der in Figur 1 gezeigte NH-Sicherungseinsatz 1 besteht im wesentlichen aus einem hohl ausgebildeten Gehäuse 2 aus isolierendem Material, dessen beiden Enden mit Deckplatten 3 und 4 aus isolierendem Material verschlossen sind. Zwischen den Deckplatten 3 und 4 und dem Gehäuse 2 sind Dichtplatten 5 gehalten. Die Verbindung der Deckplatten und Dichtplatten mit dem Gehäuse 2 erfolgt über nicht gezeigte Schrauben. Schlitzförmige Öffnungen in den Deckplatten und Dichtplatten durchsetzen Kontaktmesser 6 und 7, die eine Baueinheit mit Messerhalteplatten 8 und 9 bilden. Diese liegen, innerhalb des Gehäuses 2 angeordnet, an den Deckplatten 3 und 4 an. Mit Ansätzen der Kontaktmesser 6 und 7, die gegenüber den Messerhalteplatten 8 und 9 vorspringen, ist ein Arbeitsschmelzleiter 10 elektrisch leitend verbunden. Elektrisch parallel und beabstandet zu dem Arbeitsschmelzleiter 10 ist durch das Gehäuse 2 ein als Draht ausgebildeter Anzeigeschmelzleiter 11 geführt. Die elektrische Kontaktierung des Anzeigeschmelzleiters 11 im Bereich des Kontaktmessers 6 ist beliebig, kann beispielsweise über deren Messerhalteplatte 8 erfolgen. Die elektrische Kontaktierung des Anzeigeschmelzleiters 11 im Bereich seines anderen Endes, somit im Bereich der Messerhalteplatte 9, wird weiter unten näher beschrieben.The NH fuse-link 1 shown in Figure 1 consists essentially of a hollow housing 2 made of insulating material, the two Ends are closed with cover plates 3 and 4 of insulating material. Between the cover plates 3 and 4 and the housing 2 are sealing plates. 5 held. The connection of the cover plates and sealing plates with the housing 2 via screws, not shown. Slot-shaped openings in the cover plates and sealing plates enforce contact blades 6 and 7, which is a structural unit form with knife holding plates 8 and 9. These are located inside the housing 2 arranged on the cover plates 3 and 4 at. With approaches of contact blades 6 and 7, which protrude with respect to the knife holding plates 8 and 9, is a working fuse 10 electrically connected. Electrically parallel and spaced from the working fusible conductor 10 is through the housing 2 as a Wire trained display fuse 11 is guided. The electrical contact of the display melt conductor 11 in the area of the contact blade 6 is arbitrary, can be done for example via the knife holder plate 8. The electric Contacting the display fusion conductor 11 in the region of his other End, thus in the field of knife holder plate 9 will be described in more detail below.

Der durch das Gehäuse 2 und die Dichtplatten 5 sowie Deckplatten 3 und 4 begrenzte Innenraum des Sicherungseinsatzes ist mit Löschsand gefüllt.The through the housing 2 and the sealing plates 5 and cover plates 3 and 4 limited interior of the fuse link is filled with extinguishing sand.

Das Gehäuse 2 ist im Bereich der Deckplatte 4 mit einer stirnseitigen Ausnehmung 12 versehen. Das Gehäuse 2 weist im Bereich des der Deckplatte 3 zugewandten Endes der stirnseitigen Ausnehmung 12 einen Durchbruch 13 nach außen auf, der beispielsweise Kreisquerschnitt besitzt. In der Flucht der stirnseitigen Ausnehmung ist die Deckplatte 4 mit einem diese durchsetzenden Schlitz 14 versehen. An diesen schließt sich auf der dem Gehäuse 2 abgewandten Seite eine flächige Vertiefung 15 an, die bis zur Lagerplatte 9 reicht. Im Bereich der Lagerplatte 9 ist diese durch ein schmales Fenster 16 im vertieften Bereich der Deckplatte 4 zugänglich. Im übrigen reicht die Deckplatte 4 bis zum Kontaktmesser 7. Zwischen dem Fenster 16 und dem Schlitz 14 ist die Deckplatte 4 mit einem stärker vertieften Bereich 17 versehen, wobei der diesem Bereich zugewandte Wandschnitt 18 der Deckplatte 4, zumindest auf der dem Fenster 16 zugewandten Seite, durch einen Vorsprung 19 begrenzt ist.The housing 2 is in the region of the cover plate 4 with an end-side recess 12 provided. The housing 2 has in the region of the cover plate 3 facing End of the frontal recess 12 an opening 13 after on the outside, for example, has circular cross-section. In the flight of the frontal Recess is the cover plate 4 with a passing through this Slot 14 provided. At this closes on the housing 2 facing away from Side a flat depression 15, which extends to the bearing plate 9. In the area of the bearing plate 9, this is recessed through a narrow window 16 Area of the cover plate 4 accessible. Moreover, the cover plate 4 extends to to the contact blade 7. Between the window 16 and the slot 14 is the Cover plate 4 is provided with a more recessed portion 17, wherein this Area facing wall section 18 of the cover plate 4, at least on the the window 16 side facing is limited by a projection 19.

Das in diesem Bereich angeordnete Anzeigeelement 20 besteht aus Metallblech und weist einen Mantelabschnitt 21, einen senkrecht zu diesem abgebogenen äußeren Schenkel 22, einen von diesem Schenkel 22 auf den Mantelabschnitt 21 gerichteten diagonalen Schenkel 23 und einen mit diesem verbundenen, inneren Schenkel 24, der parallel zum äußeren Schenkel 22 angeordnet ist, auf. Der Übergang vom Schenkel 22 zum Schenkel 23 erfolgt damit nicht als spitzwinklige Knickstelle, sondern in Art eines verdickten Wulstes 25, der auf das Fenster 16 zugerichtet ist.The arranged in this area display element 20 is made of sheet metal and has a shell portion 21, a bent perpendicular to this outer leg 22, one of this leg 22 on the shell portion 21 directed diagonal leg 23 and one with this connected, inner leg 24, which is arranged parallel to the outer leg 22 is on. The transition from leg 22 to leg 23 takes place with it not as an acute-angled kink, but in the manner of a thickened bead 25, which is trimmed on the window 16.

Bei dem beschriebenen Anzeigeelement 20 ist der mit der Stirnfläche des Sicherungseinsatzes 1 in Wirkverbindung bringbare Stirnabschnitt als Z-förmige Feder ausgebildet, die durch die Schenkel 22, 23 und 24 gebildet ist. Der Mantelabschnitt 21 hingegen ist dem Mantel des Sicherungseinsatzes 1 zugeordnet.In the described display element 20 is the with the end face of the fuse link 1 engageable end portion as a Z-shaped Spring formed, which is formed by the legs 22, 23 and 24. The jacket section 21, however, is assigned to the jacket of the fuse link 1.

Der Anzeigeschmelzleiter 11 durchsetzt nicht näher veranschaulichte Löcher in den Schenkeln 22, 23 und 24. Montiert wird das Anzeigeelement 20 von außen, indem bei durch die Schenkel 22, 23 und 24 gefädeltem Anzeigeschmelzleiter 11, der eine nicht veranschaulichte Bohrung in der Deckplatte 4 durchsetzt, der Mantelabschnitt 21 des Anzeigeelementes 20 in die stirnseitige Ausnehmung 12 eingesteckt wird. Beim Spannen der Feder des Anzeigeelementes 20 durch Einwirken auf den Schenkel 22 werden die Schenkel 22, 23 und 24 gegeneinander bewegt, wie es in den Figuren 1 und 2 veranschaulicht ist, und es befindet sich der Mantelabschnitt 21 in seiner vollständig in die stirnseitige Ausnehmung 12 eingeschobenen Position. In dieser Stellung wird der im Bereich der anderen Deckplatte 3 fixierte Anzeigeschmelzleiter 11 mit seinem der Feder zugewandten Ende mittels Schneid-Klemm-Technik mit dem Schenkel 22 verbunden.The display fuse 11 passes through holes not illustrated in detail the legs 22, 23 and 24. The display element 20 is mounted from the outside, by passing through at the legs 22, 23 and 24 threaded indicator fusion 11, which passes through an unillustrated hole in the cover plate 4, the Jacket section 21 of the display element 20 in the frontal recess 12 is inserted. When tensioning the spring of the display element 20 by Acting on the leg 22, the legs 22, 23 and 24 against each other moves, as shown in Figures 1 and 2, and it is located the shell portion 21 in its fully in the frontal recess 12 inserted position. In this position, the in the field of other cover plate 3 fixed display fuse 11 with his the spring facing end by means of insulation displacement technology connected to the leg 22.

In der eingeschobenen Position deckt der Mantelabschnitt 21 im Bereich seines freien Endes den Durchbruch 13 im Gehäuses 2 ab. In diesem Bereich ist der Mantelabschnitt 21, dem Durchbruch 13 zugewandt, mit einer Farbmarkierung versehen, beispielsweise rot markiert. Auch der äußere Schenkel 22 und der diesem zugewandte sichtbare Teil des ausgefahrenen Mantelabschnitts 21 können auf der dem Gehäuse 2 abgewandten Seite eine Farbmarkierung aufweisen, beispielsweise rot ausgebildet sein, so dass sie als Melderbauteile auffallen. In the retracted position covers the shell portion 21 in the region of his free end of the opening 13 in the housing 2 from. In this area is the Jacket section 21, facing the opening 13, with a color marking provided, marked red, for example. Also, the outer leg 22 and the this facing visible part of the extended shell portion 21st can have a color marking on the side facing away from the housing 2, be formed red, for example, so that they stand out as detector components.

Bei angezogenem Anzeigeschmelzleiter 11 kontaktiert der Wulst 25 die Lagerplatte 9. Der innere Schenkel 24 der Feder ist im vertieften Bereich 17 der aus isolierendem Material bestehende Deckplatte 4 geführt und insbesondere über den Vorsprung 19 zum Kontaktmesser 7 hin positioniert. In dieser Position ragt der Stirnabschnitt der Feder nicht aus dem vertieften Bereich 17.When the display fusion conductor 11 is tightened, the bead 25 contacts the bearing plate 9. The inner leg 24 of the spring is in the recessed area 17 of the insulating material existing cover plate 4 out and in particular over positioned the projection 19 to the contact blade 7 out. In this position stands out the end portion of the spring not from the recessed area 17th

Der Mantelabschnitt 21 ist in einem Abstand von der Deckplatte 4, der der Bewegung des Mantelabschnitts 21 beim Auslösen der Sicherung, somit dem Durchbrennen des Anzeigeschmelzleiters 11 und dem Entspannen der Feder entspricht, mit einer Ausbiegung 27 versehen, die somit aus der Ebene der Blattfeder ragt. Bei weitgehend entspannter Feder und damit dem ausgelösten Zustand des Sicherungseinsatzes, wie er in den Figuren 3 und 4 veranschaulicht ist, gelangt das verschobene Anzeigeelement 20 mit der Ausbiegung 27 gegen die Deckplatte 4 im Bereich des Schlitzes 14, so dass der Mantelabschnitt 21 sich nicht weiter aus der stirnseitigen Ausnehmung 12 herausbewegen kann. Hierbei wird die Farbmarkierung des Mantelabschnitts 21 aus dem Bereich des Durchbruchs 13 herausbewegt und damit, im Bereich des Mittenmelders, der ausgelöste Zustand der Sicherung signalisiert.The shell portion 21 is at a distance from the cover plate 4, the movement the shell portion 21 when triggering the fuse, thus the Blowing the display fusion conductor 11 and the relaxation of the spring corresponds, provided with a deflection 27, thus from the plane of the Leaf spring protrudes. At a largely relaxed spring and thus the triggered Condition of the fuse link, as illustrated in Figures 3 and 4 is, the displaced display element 20 comes with the deflection 27th against the cover plate 4 in the region of the slot 14, so that the shell portion 21 does not move further out of the frontal recess 12 can. Here, the color marking of the jacket portion 21 from the Area of the aperture 13 moved out and thus, in the area of the center detector, the tripped state of the fuse signals.

Beim Auslösen der Sicherung und damit Durchschmelzen von Arbeitsschmelzleiter 10 und Anzeigeschmelzleiter 11 wird der Wulst 25 des Anzeigeelementes 20 von der Lagerplatte 9 des Kontaktmessers 7 wegbewegt, so dass das Anzeigeelement 20 spannungsfrei geschaltet wird. Selbst dann, wenn über das Kontaktmesser 7 Strom eingespeist wird, ist dieser Bereich des Sicherungseinsatzes somit spannungsfrei. Das in einen Aufnahmekontakt eingesteckte Kontaktmesser 7 ist ohnehin mit einer nicht gezeigten Isolierung, beispielsweise einer Abdeckhaube gegen unbefugtes Berühren gesichert.When triggering the fuse and thus melting of working molten conductor 10 and display fuse 11 is the bead 25 of the display element 20 away from the bearing plate 9 of the contact blade 7, so that the display element 20 is switched voltage-free. Even if over that Contactor 7 current is fed into this area of the fuse link thus tension-free. The inserted into a receiving contact contact blade 7 is anyway with an insulation, not shown, for example a cover secured against unauthorized contact.

Die Ausführungsform nach den Figuren 5 bis 7 unterscheidet sich von derjenigen nach den Figuren 1 und 4 nur dadurch, dass zwischen den Schenkeln 22 und 23 kein Wulst 25 gebildet ist, die aus isolierendem Material bestehende Deckplatte 4 keinen Vorsprung 19 aufweist und stattdessen der innere Schenkel 24 länger ist. Der Schenkel 24 ist mit einem geformten, gut kontaktierenden Ende 28 versehen, das die Lagerplatte 9 im Bereich des Fensters 16 kontaktiert. Um den spannungsführenden Anzeigeschmelzleiter 11 beim eingesetztem Sicherungseinsatz 1 zu isolieren, ist eine Kunststoffabdeckung 29 vorgesehen, die auf den äußeren Schenkel 22 aufgesteckt oder in die Vertiefung 15 eingesetzt ist. Bei ausgelöster Sicherung verbleibt bei dieser Ausführungsform allerdings das Anzeigeelement 20 in leitender Verbindung mit der Lagerplatte 9 des Kontaktmessers 7. Diese Ausführungsform findet insbesondere dann Verwendung, wenn Strom über das Kontaktmesser 6 eingespeist wird und demzufolge beim Auslösen der Sicherung das Kontaktmesser 7 spannungslos ist.The embodiment of Figures 5 to 7 differs from that according to Figures 1 and 4 only in that between the legs 22nd and 23 no bead 25 is formed, which consists of insulating material Cover plate 4 has no projection 19 and instead the inner leg 24 is longer. The leg 24 is formed with a well-contacting one Provided end 28, which contacts the bearing plate 9 in the region of the window 16. To the live display fuse 11 when inserted Insulate fuse link 1, a plastic cover 29 is provided, attached to the outer leg 22 or inserted into the recess 15 is. When triggered fuse remains in this embodiment, however the display element 20 in conductive connection with the bearing plate 9 of the Contact blade 7. This embodiment finds particular use, when power is supplied through the contact blade 6 and consequently when triggering the fuse, the contact blade 7 is dead.

Die Ausführungsform nach den Figuren 8 bis 11 unterscheidet sich von den beiden zuerst beschriebenen Ausführungsformen dadurch, dass leitende Deckplatten 3 und 4 vorgesehen sind. Infolgedessen liegt der innere Schenkel 24 unmittelbar an der Deckplatte 4 an. Sie weist keine Vertiefung 15 auf. Diese Ausführungsform stellt die baulich am einfachsten gestaltete dar. Bei dieser Gestaltung ist der Schenkel 24 vorzugsweise mit einem geformten, gut kontaktierenden Ende versehen.The embodiment of Figures 8 to 11 differs from the Both first described embodiments in that conductive cover plates 3 and 4 are provided. As a result, the inner leg 24 is located directly to the cover plate 4. It has no recess 15. These Embodiment represents the structurally simplest designed. In this Design is the leg 24 preferably with a molded, well-contacting End provided.

Bei den beschriebenen Ausführungsformen bezeichnen der Einfachheit halber dieselben Bezugsziffem in Aufbau oder Funktion übereinstimmende Bauteile.In the described embodiments, for simplicity's sake the same reference numerals in construction or function matching components.

Claims (14)

  1. Fuse link (1), more particularly one for low-voltage high-breaking-capacity fuses (l.v.h.b.c. fuses), having a working fuse-element (10) arranged in a box (2) and having an indicator device which features an indicator element (20) on the end face and on the lateral surface of the fuse link (1), the indicator element (20) being fixed in a pre-tensioned position by an indicator fuse-element (11) which is arranged in the box (2) in an electrically parallel arrangement to the working fuse-element (10), and acting on one end portion (22, 23, 24) of the indicator element (20), the end portion (22, 23, 24) resting against a cover panel (4) which closes the box (2), and the end portion (22, 23, 24) being configured as a spring in the shape of a Z, with the parallel limbs (22, 24) of the spring being arranged parallel to the cover panel,
    characterised in that the end portion rests loosely against the cover panel which closes the box (2), and a device (27) is provided for limiting the displacement of the indicator element (20) whenever the fuse is tripped.
  2. Fuse link according to claim 1, characterised in that the outer parallel limb (22) and/or a visible area of the lateral portion (21) of the spring is colour coded on the outside.
  3. Fuse link according to claim 1 or 2, characterised in that the spring (21, 22, 23, 24) is configured as a bent leaf spring made from metal.
  4. Fuse link according to any one of claims 1 to 3, characterised in that the box (2) is provided with an end recess (12) through which the lateral portion (21) of the indicator element (20) passes, the box (2) incorporating an opening (13) to the outside in the region of the recess (12) in the end face, and a signalling zone of the lateral portion (21) is disposed in the region of the opening (13) when the indicator fuse-element (11) is under tension.
  5. Fuse link according to any one of claims 1 to 4, characterised in that the indicator element (20) is configured in one piece.
  6. Fuse link according to any one of claims 1 to 5, characterised in that a stop (27) for limiting the path of the lateral portion (21) is provided in the path travelled by the lateral portion (21) as the spring is relaxing.
  7. Fuse link according to any one of claims 1 to 6, characterised in that the lateral portion (21) is provided with a lateral projection (27) which can be operatively linked to the cover panel (4) or to a sealing panel (5) arranged between the cover panel (4) and the box (2).
  8. Fuse link according to any one of claims 1 to 7, characterised in that the end portion (22, 23, 24) of the indicator element (20) is configured as a leaf spring and the lateral portion (21) of the indicator element (20) as a slide connected to the outer parallel limb (22).
  9. Fuse link according to any one of claims 1 to 8, characterised in that the inner parallel limb (24) of the spring (22, 23, 24) is set in a depression (15) in the cover panel (4).
  10. Fuse link according to any one of claims 1 to 9, characterised in that the cover panel (4) is non-conductive.
  11. Fuse link according to claim 10, characterised in that electrical contact for the indicator fuse element (11) is made via the spring (22, 23, 24), which in the tensioned state makes the contact with a bearing plate (9) on a blade contact (7) of the fuse link.
  12. Fuse link according to claim 10 or 11, characterised in that the electrical contact in respect of the indicator element (20) is isolated from the supply when the fuse has been tripped.
  13. Fuse link according to any one of claims 1 to 12, characterised in that the indicator element (20) is provided with a shaped area (25, 28) which makes the contact with the bearing plate (9).
  14. Fuse link according to any one of claims 10 to13, characterised in that in the tensioned state the spring (22, 23, 24) is covered by means of a guard (29).
EP02021627A 2002-09-27 2002-09-27 Cartridge fuse particularly for low-voltage high-power fuses Expired - Lifetime EP1403893B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SI200230103T SI1403893T1 (en) 2002-09-27 2002-09-27 Cartridge fuse particularly for low-voltage high-power fuses
EP02021627A EP1403893B1 (en) 2002-09-27 2002-09-27 Cartridge fuse particularly for low-voltage high-power fuses
ES02021627T ES2237641T3 (en) 2002-09-27 2002-09-27 FUSE INSERT, ESPECIALLY FOR LOW VOLTAGE HIGH POWER FUSES.
DE50202428T DE50202428D1 (en) 2002-09-27 2002-09-27 Fuse insert, especially for low-voltage high-performance fuses
AT02021627T ATE290718T1 (en) 2002-09-27 2002-09-27 FUSE INSERT, ESPECIALLY FOR LOW VOLTAGE, HIGH PERFORMANCE FUSES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02021627A EP1403893B1 (en) 2002-09-27 2002-09-27 Cartridge fuse particularly for low-voltage high-power fuses

Publications (2)

Publication Number Publication Date
EP1403893A1 EP1403893A1 (en) 2004-03-31
EP1403893B1 true EP1403893B1 (en) 2005-03-09

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Application Number Title Priority Date Filing Date
EP02021627A Expired - Lifetime EP1403893B1 (en) 2002-09-27 2002-09-27 Cartridge fuse particularly for low-voltage high-power fuses

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EP (1) EP1403893B1 (en)
AT (1) ATE290718T1 (en)
DE (1) DE50202428D1 (en)
ES (1) ES2237641T3 (en)
SI (1) SI1403893T1 (en)

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Publication number Priority date Publication date Assignee Title
CN105788912A (en) * 2014-12-18 2016-07-20 天津博久机电设备科技有限公司 Back plate of fuse type disconnecting switch

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831057A1 (en) * 1998-07-13 2000-01-20 Schneider Gmbh Annaberg M Fuse insert for LV high power fuse has parallel display fuse conductor monitoring condition of main fuse conductor and restraining spring-loaded display button providing fuse switch condition indication

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034751B (en) * 1956-09-29 1958-07-24 Voigt & Haeffner Ag Fuse cartridge, in particular low-voltage, high-performance fuse cartridge with an indicator indicating the status of the fuse
DE9006337U1 (en) * 1990-06-05 1990-08-09 Siemens AG, 1000 Berlin und 8000 München NH fuse link
EP0917723B1 (en) * 1996-08-08 2000-03-22 Siemens Aktiengesellschaft Fuse link
DE19744535B4 (en) * 1997-06-05 2010-07-29 Ferraz Shawmut Gmbh Electric fuse link
DE19804777A1 (en) * 1998-02-06 2000-02-24 Sicherungen Bau Gmbh NH fuse link with indicator
DE19836815A1 (en) * 1998-08-14 2000-02-17 Schneider Gmbh Annaberg M Fuse insert for low-voltage high-performance fuse, showing another color of slide through view hole after separation of display melt conductor
DE29814737U1 (en) * 1998-08-17 1998-11-12 Siemens AG, 80333 München Fuse link
DE10005145C2 (en) * 1999-12-23 2002-11-07 Sicherungen Bau Gmbh Fuse link, especially NH fuse link

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831057A1 (en) * 1998-07-13 2000-01-20 Schneider Gmbh Annaberg M Fuse insert for LV high power fuse has parallel display fuse conductor monitoring condition of main fuse conductor and restraining spring-loaded display button providing fuse switch condition indication

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ATE290718T1 (en) 2005-03-15
DE50202428D1 (en) 2005-04-14
EP1403893A1 (en) 2004-03-31
SI1403893T1 (en) 2005-06-30
ES2237641T3 (en) 2005-08-01

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