EP1403893B1 - Cartouche à fusible en particulier pour fusibles de haute puissance basse tension - Google Patents

Cartouche à fusible en particulier pour fusibles de haute puissance basse tension 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
Authority
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)
English (en)
Other versions
EP1403893A1 (fr
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 AT02021627T priority Critical patent/ATE290718T1/de
Priority to ES02021627T priority patent/ES2237641T3/es
Priority to DE50202428T priority patent/DE50202428D1/de
Priority to SI200230103T priority patent/SI1403893T1/xx
Priority to EP02021627A priority patent/EP1403893B1/fr
Publication of EP1403893A1 publication Critical patent/EP1403893A1/fr
Application granted granted Critical
Publication of EP1403893B1 publication Critical patent/EP1403893B1/fr
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)

Claims (14)

  1. Cartouche de fusible (1), en particulier pour des coupe-circuits basse tension à haut pouvoir de coupure (coupe-circuits BT), comprenant un fil fusible de travail (10) disposé dans un boítier (2) et comprenant un mécanisme de signalisation, qui présente un élément de signalisation (20) sur le côté frontal et sur la surface latérale de la cartouche de fusible (1), l'élément de signalisation (20) étant fixé à l'état polarisé via un fil fusible de signalisation (11) disposé dans le boítier (2) et parallèlement, du point de vue électrique, au fil fusible de travail (10), le fil fusible de signalisation agissant sur une section frontale (22, 23, 24) de l'élément de signalisation (20), la section frontale (22, 23, 24) venant s'appliquer contre une plaque de recouvrement (4) fermant le boítier (2), la section frontale (22, 23, 24) étant réalisée à la manière d'un ressort qui présente la forme d'un Z, les branches parallèles (22, 24) du ressort étant disposées parallèlement à la plaque de recouvrement, caractérisée en ce que la section frontale vient se disposer sans être serrée contre la plaque de recouvrement fermant le boítier et un mécanisme (27) étant prévu pour limiter le déplacement de l'élément de signalisation (20) lors de la fusion du fusible.
  2. Cartouche de fusible selon la revendication 1, caractérisée en ce que la branche parallèle externe (22) et/ou une zone visible de la section de surface latérale (21) du ressort sont munies, à l'extérieur, d'un repère de couleur.
  3. Cartouche de fusible selon la revendication 1 ou 2, caractérisée en ce que le ressort (21, 22, 23, 24) est réalisé sous la forme d'un ressort à lame plié en métal.
  4. Cartouche de fusible selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le boítier (2) est muni d'un évidement frontal (12) qui traverse la section de surface latérale (21) de l'élément de signalisation (20), le boítier (2) présentant une perforation (13) orientée vers l'extérieur dans la zone de l'évidement frontal (12) et une zone de signalisation de la section de surface latérale (21) étant disposée, à l'état polarisé du fil fusible de signalisation (11), dans la zone de la perforation (13).
  5. Cartouche de fusible selon l'une quelconque des revendications 1 à 4, caractérisée en ce que l'élément de signalisation (20) est réalisé en une seule pièce.
  6. Cartouche de fusible selon l'une quelconque des revendications 1 à 5, caractérisée en ce que, dans la voie de déplacement de la section de surface latérale (21), lorsque le ressort est détendu, on prévoit une butée (27) pour limiter la voie de la section de surface latérale (21).
  7. Cartouche de fusible selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la section de surface latérale (21) est munie d'une saillie latérale (27) qui peut être amenée en liaison de travail avec la plaque de recouvrement (4) ou avec une plaque d'étanchéisation (5) disposée entre la plaque de recouvrement (4) et le boítier (2).
  8. Cartouche de fusible selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la section frontale (22, 23, 24) de l'élément de signalisation (20) est réalisée sous la forme d'un ressort à lame et la section de surface latérale (21) de l'élément de signalisation (20) est réalisée sous la forme d'un coulisseau relié à la branche parallèle externe (22).
  9. Cartouche de fusible selon l'une quelconque des revendications 1 à 8, caractérisée en ce que la branche parallèle interne (24) du ressort (22, 23, 24) vient s'insérer dans un renfoncement (15) de la plaque de recouvrement (4).
  10. Cartouche de fusible selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la plaque de recouvrement (4) est de type non conducteur.
  11. Cartouche de fusible selon la revendication 10, caractérisée en ce que la mise en contact électrique du fil fusible de signalisation (11) a lieu via le ressort (22, 23, 24) qui, à l'état tendu, entre en contact avec une plaque de support (9) d'un contact en couteau (7) de la cartouche de fusible.
  12. Cartouche de fusible selon l'une quelconque des revendications 10 ou 11, caractérisée en ce que la mise en contact électrique de l'élément de signalisation (20) est supprimée lors de la fusion du fusible.
  13. Cartouche de fusible selon l'une quelconque des revendications 1 à 12, caractérisée en ce que l'élément de signalisation (20) est muni d'une déformation (25, 28) qui entre en contact avec la plaque de support (9).
  14. Cartouche de fusible selon l'une quelconque des revendications 10 à 13, caractérisée en ce que le ressort (22, 23, 24) à l'état tendu, est recouvert d'un recouvrement (29).
EP02021627A 2002-09-27 2002-09-27 Cartouche à fusible en particulier pour fusibles de haute puissance basse tension Expired - Lifetime EP1403893B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT02021627T ATE290718T1 (de) 2002-09-27 2002-09-27 Sicherungseinsatz, insbesondere für niederspannungs-hochleistungs-sicherungen
ES02021627T ES2237641T3 (es) 2002-09-27 2002-09-27 Inserto de fusible, especialmente para fusibles de alta potencia de baja tension.
DE50202428T DE50202428D1 (de) 2002-09-27 2002-09-27 Sicherungseinsatz, insbesondere für Niederspannungs-Hochleistungs-Sicherungen
SI200230103T SI1403893T1 (en) 2002-09-27 2002-09-27 Cartridge fuse particularly for low-voltage high-power fuses
EP02021627A EP1403893B1 (fr) 2002-09-27 2002-09-27 Cartouche à fusible en particulier pour fusibles de haute puissance basse tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02021627A EP1403893B1 (fr) 2002-09-27 2002-09-27 Cartouche à fusible en particulier pour fusibles de haute puissance basse tension

Publications (2)

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

Family

ID=31970325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02021627A Expired - Lifetime EP1403893B1 (fr) 2002-09-27 2002-09-27 Cartouche à fusible en particulier pour fusibles de haute puissance basse tension

Country Status (5)

Country Link
EP (1) EP1403893B1 (fr)
AT (1) ATE290718T1 (fr)
DE (1) DE50202428D1 (fr)
ES (1) ES2237641T3 (fr)
SI (1) SI1403893T1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105788912A (zh) * 2014-12-18 2016-07-20 天津博久机电设备科技有限公司 一种刀熔开关背板

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831057A1 (de) * 1998-07-13 2000-01-20 Schneider Gmbh Annaberg M Sicherungseinsatz

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034751B (de) * 1956-09-29 1958-07-24 Voigt & Haeffner Ag Sicherungspatrone, insbesondere Niederspannungs-Hochleistungs-Sicherungspatrone mit einem den Zustand der Sicherung anzeigenden Kennmelder
DE9006337U1 (fr) * 1990-06-05 1990-08-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
WO1998007172A1 (fr) * 1996-08-08 1998-02-19 Siemens Aktiengesellschaft Liaison fusible
DE19744535B4 (de) * 1997-06-05 2010-07-29 Ferraz Shawmut Gmbh Elektrischer Sicherungseinsatz
DE19804777A1 (de) * 1998-02-06 2000-02-24 Sicherungen Bau Gmbh NH-Sicherungseinsatz mit Kennmelder
DE19836815A1 (de) * 1998-08-14 2000-02-17 Schneider Gmbh Annaberg M Sicherungseinsatz
DE29814737U1 (de) * 1998-08-17 1998-11-12 Siemens Ag Sicherungseinsatz
DE10005145C2 (de) * 1999-12-23 2002-11-07 Sicherungen Bau Gmbh Sicherungseinsatz, insbesondere NH-Sicherungseinsatz

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19831057A1 (de) * 1998-07-13 2000-01-20 Schneider Gmbh Annaberg M Sicherungseinsatz

Also Published As

Publication number Publication date
DE50202428D1 (de) 2005-04-14
EP1403893A1 (fr) 2004-03-31
ATE290718T1 (de) 2005-03-15
ES2237641T3 (es) 2005-08-01
SI1403893T1 (en) 2005-06-30

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