EP1141987A1 - Circuit breaker protecting electric circuits in road vehicles - Google Patents

Circuit breaker protecting electric circuits in road vehicles

Info

Publication number
EP1141987A1
EP1141987A1 EP99968780A EP99968780A EP1141987A1 EP 1141987 A1 EP1141987 A1 EP 1141987A1 EP 99968780 A EP99968780 A EP 99968780A EP 99968780 A EP99968780 A EP 99968780A EP 1141987 A1 EP1141987 A1 EP 1141987A1
Authority
EP
European Patent Office
Prior art keywords
housing
circuit breaker
release
breaker according
flat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99968780A
Other languages
German (de)
French (fr)
Other versions
EP1141987B1 (en
Inventor
Wolfgang Ullermann
Ludwig Seiverth
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.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen GmbH
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 Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Publication of EP1141987A1 publication Critical patent/EP1141987A1/en
Application granted granted Critical
Publication of EP1141987B1 publication Critical patent/EP1141987B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32Insulating body insertable between contacts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/30Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide
    • H01H73/303Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide with an insulating body insertable between the contacts when released by a bimetal element
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08Terminals; Connections
    • H01H2071/088Terminals for switching devices which make the devices interchangeable, e.g. with fuses
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10Operating or release mechanisms
    • H01H71/12Automatic release mechanisms with or without manual release
    • H01H71/128Manual release or trip mechanisms, e.g. for test purposes

Definitions

  • the invention relates to a circuit breaker for protecting circuits in road vehicles with the features listed in the preamble of claim 1 (EP 0 151 692 B1; DE 35 26 785 C1).
  • Such circuit breakers are to be used instead of conventional fuses according to DIN 72581-3 in vehicles fitted with flat fuse bases as standard worldwide.
  • the invention has for its object to provide in a circuit breaker of the type mentioned in a simpler way known from DE-A-1099624 possibility to interrupt the circuit protected by the circuit breaker arbitrarily without overcurrent tripping.
  • There is a need for simple manual circuit interruption in particular in the application for securing the circuits of motor vehicles, for example if if the vehicle is not used for a longer period of time, drainage of the battery by leakage currents should be effectively prevented. This is the case, for example, after a final inspection of the vehicle up to delivery to the customer. In between there are often long-term transport or storage times.
  • the solution is especially tailored to the conditions specified by the miniaturized dimensions of the circuit breaker.
  • the hand release is designed as a two-armed swivel lever, the release arm of which is positioned in the rest position on the contact side of the bimetal spring washer.
  • the trigger arm does not touch the bimetal. Rather, it is held contactless in this starting and resting position. This is caused by a spring pressure, which is exerted by the bearing axis of the hand release on its lower leg as a swivel drive.
  • the design is specially designed so that the hand release, which acts as a two-armed swivel lever, is che snap connection is snapped onto the bearing shaft integral with the housing cap.
  • This is a construction that is easy to accomplish in terms of space and is technically easy to assemble and that can also be implemented cost-effectively.
  • a circuit breaker of the type according to the invention is a mass article.
  • the hand release is easy and safe to operate, even in the notoriously cramped conditions of many circuit breakers arranged in a row. Whether its triggering movement has brought about the desired contact separation can be recognized unmistakably in the embodiment having an additional separating slide according to claim 2 by the fact that after a manual release, the separating slide protrudes from the switch housing with its pressure end.
  • the actuating arm of the manual release protruding from the housing does not hinder the traceability of the isolating slide by pressurizing the end of its pressure any more than the automatic snap contacting or reclosing of the circuit breaker that is possible after the bimetal has cooled down. Therefore, the subject matter of the invention can easily be implemented even if the construction of the prior art mentioned initially remains unchanged.
  • Fig. 1 is an exploded perspective view of the individual parts of the circuit breaker.
  • Fig. 2 shows a longitudinal section along the line ll-ll in Fig. 1 by the mounted switch in the contact position of the bimetal.
  • Fig. 3 is an illustration analogous to Fig. 2 with the hand release pivoted into its maximum release position and the switch open accordingly.
  • Fig. 4 shows the switch in the release position shown in FIG. 3 with the hand release released.
  • Fig. 5-7 enlarged detail views of the contact and manual release areas of the switch according to Fig. 2-4.
  • the base part 1 which is made of insulating material, is injection molded around the two parallel flat connectors 2, 3.
  • the flat plugs 2, 3 are fixed in place in the housing.
  • the tabs 2, 3 protrude outward from the base part 1 with their plug ends. Their inner ends 4,5 are in the interior of the circuit breaker.
  • the flat plugs 3, 4 run over their entire longitudinal extent in accordance with the specification of DIN standard 72581-3 relating to known flat fuse inserts which are effective as fuses.
  • the flat plugs 3, 4 run essentially parallel to the housing cover surfaces 6, 7 of the housing cap 8 that can be pushed onto the base part 1 in the longitudinal direction 9.
  • the housing cap 8 is snap-fixed to the base part 1.
  • the fixing opening 10 snaps onto the fixing tooth 11 of the base part 1 in the housing cover surface 6.
  • the tabs 2, 3 have the cross-sectional shape of a flat rectangle over their entire length.
  • the bimetallic snap disk 12 is fixed with its fixing end 13 at the fixing point 14, e.g. welded on.
  • the bimetallic snap disk 12 protrudes with its movement end 15 as the contact end into an overlap position with the inner end 5 of the other flat connector 3.
  • This inner end 5 carries on its upper side the stationary counter contact 16 for the movement contact 17 fixed on the underside of the movement end 15 of the bimetallic spring washer 12.
  • the separating slide 18 forms the one leg of a structure which is rectangular in plan view (FIG. 1), the other leg 23, which projects against the longitudinal direction 9, carries the pressure end 24 of the separating slide 18, which in the contacting position of the contacts 16, 17 (FIG. 2 , 5) and in the correspondingly compressed compression spring 19 lies within the housing cap 8 between the inner ends 4, 5 of the flat plugs 2, 3 and is aligned parallel to the inner ends 4, 5 of the flat plugs 2, 3 positioned on both sides.
  • This stop limits the sliding movement of the isolating slide 18 and positions the isolating slide 18 in its shielded position with respect to the mating contact 16.
  • the compression spring 19 exercises still a permanent pressure against the longitudinal direction 9 from the slide valve 18.
  • the isolating slide 18 is guided as on a rail on the surface of the inner end 5 of the tab 3 exposed in the housing.
  • a guide recess 27 (FIG. 1) effective in the manner of a track groove is provided on the underside of the separating slide 18.
  • the printing end 24 s of the pressure limb 23 of the separating slide 18 stands outward through the opening 28 of the housing cap 8 and thereby signals the completed contact opening.
  • the recognizability of this signaling from the outside can be ensured or improved by a signal color of the printing end 24 that is different from the housing color.
  • a manual trigger 29 optionally levering the bimetal spring washer 12 out of its contact position (FIG. 2.5).
  • This is designed as a two-armed lever, which protrudes from the flat side 30 of the housing cap 8 facing away from the tabs 2, 3 with a sesin actuating end.
  • the manual release 29 is positioned next to the leg 23 or the pressure end 24 of the separating slide 18 on the side facing the inner end 5 of the flat plug 3 and extends with its longitudinal direction 9 parallel to the leg 23.
  • the hand release 29 acts on the contact end 15 of the bimetal 25 spring washer 12 from the contact side carrying the movement contact 17 in the contact opening direction 25 to open the contact. This action is effected by the release arm 31 of the hand release 29 designed as a two-armed swivel lever, which for this purpose in the release direction 25 which is pivoted up with the housing cap 8 one-piece bearing axis 32.
  • the other arm namely the actuating arm 33 of the manual trigger 29, projects outward beyond the bearing axis 32.
  • the actuating arm 33 lies over its entire length Length outside the housing cap 8.
  • the bearing axis 32 is positioned on the outside in front of the housing opening 36, through which the manual trigger 29 protrudes into the interior of the housing.
  • the manual release 29 is a one-piece, approximately U-shaped insulating material part, which includes the bearing axis 32 with its two U-legs.
  • the one U-leg namely the lower one in the figures, is formed by the actuating arm 33 and the trigger arm 31 which is attached to it and extends into the interior of the housing.
  • the bearing axis 32 of the manual release 29 is aligned approximately parallel to the bimetallic spring washer 12 and to the housing cover surfaces 6, 7. It runs perpendicular to the drawing planes of FIGS. 2-7.
  • the U-leg of the manual release 29 positioned above the bearing axis 32 is provided as a fixing leg 37 with a retaining lug 38 which engages behind the bearing axis 32 and projects in the direction of the release leg 31.
  • the fixing leg 37 carries on its upper side a protruding housing stop 39, which thereby limits the insertion length of the manual release 29 with respect to the housing opening 36, the stop position of which on the housing top surface 6 can be seen from FIGS. 2.5.
  • the crosshead 40 of the U-shape of the outer end of the actuating arm 33 of the hand release 29 forms its outer end.
  • the lower U-leg namely the trigger arm 31 of the manual trigger 29, is hollowed out approximately in the central region of its longitudinal extent to form the bearing shell 41 on its inner flank.
  • the manual trigger 29 is snapped onto the bearing axis 32 by a movable snap connection.
  • it includes the bearing axis 32 with its two U-legs as an integrated snapper and / or as counter surfaces interacting with the snapper.
  • the bearing axis has a cross-sectional shape which elastically spreads when the trigger 42 of the manual trigger 29 has its U-leg in such a way that the elastic spring pressure stored by the expansion acts as the manual trigger 29 automatically returning to its initial pivot position counter to the trigger pivot 42.
  • This cross-sectional shape is characterized by a certain asymmetry.
  • This asymmetry consists in the fact that the cross-sectional dimension of the bearing axis 32 acting on the U-legs 31, 37 in the release pivot position (FIG. 3.6) is larger than that on the U-legs 31, 37 in the rest position (FIGS. 2,4,5, 7.8) of the cross-sectional dimension acting on the manual release.
  • This asymmetry also creates a counter abutment surface for the retaining lug 38 and a swivel stop 44 for the actuating arm 33 to limit the swivel range of the manual trigger 29.
  • the U-shape and the resilient consistency of the hand release 29 have a number of advantages in common with the cross-sectional shape of the bearing axis 32 that deviates from a circle and approximates an ellipse. Regardless of the cross-sectional shape of the bearing axis 32, the simple snap mounting of the manual release 29 on the bearing axis 32 is in a manner ensuring its captive mounting.
  • the hand release 29 is simply pushed on from the outside with the U-leg ends lying in the housing opening 36 and snapped on in the process.
  • the suspension or rest position is shown in FIGS. 5, 7.
  • the trigger arm 31 of the manual trigger 29 is below the bimetal 12. If the manual trigger 29 is pivoted clockwise around the bearing axis 32, the trigger end 31 is raised.
  • FIG. 8 shows a modified embodiment of the manual release 29.
  • the modification relates to the arrangement of an actuating spur 46 projecting outward beyond the head surface 45 of the crosshead 40 of the manual trigger 29.
  • the actuating spur 46 projects in the longitudinal direction of the trigger arm 31 in the opposite direction to the outside and is positioned approximately where the longitudinal directions of crosshead 40 and release arm 31 or actuating arm 33 intersect.
  • What is essential here is the arrangement which is offset off-center to the bearing axis 32 both horizontally and vertically with respect to FIG. 8 such that almost every pressure effect exerted on the actuating spur generates a force component, irrespective of the pressure direction, which results in a pivoting movement of the manual release triggering the circuit breaker 29 is implemented.
  • the pivoting direction 47 or the torque resulting from it is indicated by the directional arrow 47.
  • the directions of action 48, 49 which lead to such a torque effect in the same way are also illustrated by directional arrows.
  • the manual release 29 is held in a color selected analogously to the safety colors according to DIN 72581-3 and clearly contrasting with the housing color, which also facilitates safe selection and manual operation in a row arrangement.
  • Compression spring 44 swivel stop

Landscapes

  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Road Signs Or Road Markings (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

A circuit breaker for protecting electrical circuits, particularly in motor vehicles, includes a flat housing, which comprises an insulating material and has two adjacent flat plugs. A bimetal that is embodied as a snap-action element and is fixed to a flat plug serves in contacting the flat plugs together, with the contact end of the bimetal being located in an overlapping position with the counter-contact. During a contact opening as stipulated by an overcurrent, a contact separator automatically travels into the space between the opened contacts, and can be returned from its contact-separating position by the external exertion of a force acting counter to the spring pressure. A manual release device, which diverts the contact end of the bimetal from its contacting position into its contact-opening position, protrudes from the breaker housing.

Description

Beschreibung description
Schutzschalter zur Absicherung von Stromkreisen in StraßenfahrzeugenCircuit breaker for protecting circuits in road vehicles
Die Erfindung betrifft einen Schutzschalter zur Absicherung von Stromkreisen in Straßenfahrzeugen mit den im Oberbegriff des Anspruches 1 aufgeführten Merkmalen (EP 0 151 692 B1 ; DE 35 26 785 C1 ). Solche Schutzschalter sollen anstelle üblicher Schmelzsicherungen nach DIN 72581-3 in weltweit serienmäßig in mit Flachsicherungssockeln ausgestatteten Kraftfahrzeugen verwendet werden.The invention relates to a circuit breaker for protecting circuits in road vehicles with the features listed in the preamble of claim 1 (EP 0 151 692 B1; DE 35 26 785 C1). Such circuit breakers are to be used instead of conventional fuses according to DIN 72581-3 in vehicles fitted with flat fuse bases as standard worldwide.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Schutzschalter der eingangs genannten Art in einfacherer Weise eine grundsätzlich bereits aus DE-A-1099624 bekannte Möglichkeit zu schaffen, den durch den Selbstschalter abgesicherten Stromkreis auch willkürlich ohne Überstromauslösung unterbrechen zu können. Für eine einfache manuelle Stromkreisunterbrechung besteht insbesondere bei dem Einsatzzweck zur Absicherung der Stromkreise von Kraftfahrzeugen ein Bedarf, wenn z.B. bei einer längeren Nichtbenutzung des Fahrzeuges eine Entleerung der Batterie durch Kriechströme wirksam verhindert werden soll. Das ist beispielsweise nach einer Endprüfung des Fahrzeuges bis zur Auslieferung an den Kunden der Fall. Dazwischen liegen nämlich oftmals langzeitige Transport- oder Lagerzeiten. Diese Aufgabe wird durch Anspruch 1 gelöst.The invention has for its object to provide in a circuit breaker of the type mentioned in a simpler way known from DE-A-1099624 possibility to interrupt the circuit protected by the circuit breaker arbitrarily without overcurrent tripping. There is a need for simple manual circuit interruption, in particular in the application for securing the circuits of motor vehicles, for example if if the vehicle is not used for a longer period of time, drainage of the battery by leakage currents should be effectively prevented. This is the case, for example, after a final inspection of the vehicle up to delivery to the customer. In between there are often long-term transport or storage times. This object is solved by claim 1.
Konstruktive Ausgestaltungsvarianten der Lösung sind Gegenstand von Unteransprüchen. Die Lösung ist besonders auf die durch die miniaturisierten Abmessungen des Schutzschalters vorgegebenen Verhältnisse abgestimmt. Insbesondere ist der Handauslöser als zweiarmiger Schwenkhebel ausgeführt, dessen Auslösearm in Ruhestellung auf der Kontaktseite der Bimetall-Sprungscheibe positioniert ist. In Kontaktstellung der Bimetall-Sprungscheibe berührt der Auslösearm das Bimetall nicht. Er ist vielmehr berührungslos in dieser Ausgangs- und Ruheposition gehalten. Das wird durch einen Federdruck bewirkt, der von der Lagerachse des Handauslösers auf dessen unteren Schenkel als Schwenkantrieb ausgeübt wird. Die Konstruktion ist speziell so gestaltet, dass der als zweiarmiger Schwenkhebel wirksame Handauslöser durch eine bewegli- che Schnappverbindung auf die mit der Gehäusekappe einstückige Lagerachse aufgeschnappt ist. Das ist eine den beengten Raumverhältnissen angepasste, montagetechnisch leicht zu bewerkstelligende Konstruktion, die auch kostengünstig realisierbar ist. Schließlich ist ein Schutzschalter der erfindungsgemäßen Art ein Massenartikel. Außerdem ist der Handauslöser leicht und sicher, auch bei den notorisch beengten Umgebungsverhältnissen vieler in Reihe nebeneinander angeordneter Schutzschalter bedienbar. Ob seine Auslösebewegung die angestrebte Kontakttrennung bewirkt hat, ist bei der einen zusätzlichen Trennschieber nach Anspruch 2 aufweisenden Ausführungsform unverwechselbar daran zu erkennen, dass nach einer Handauslösung der Trennschieber mit seinem Druckende aus dem Schaltergehäuse hinaussteht. Der vom Gehäuse abstehende Betätigungsarm des Handauslösers behindert die Rückführbar- keit des Trennschiebers durch Druckbeaufschlagung seines Druckendes genausowenig wie die danach bei erkaltetem Bimetall mögliche selbsttätige Schnappkontaktierung bzw. Wiedereinschaltung des Schutzschalters. Daher läßt sich der Erfindungsgegen- stand einfach auch bei sonst unverändert bleibender Konstruktion des eingangs genannten Standes der Technik verwirklichen.Constructive design variants of the solution are the subject of subclaims. The solution is especially tailored to the conditions specified by the miniaturized dimensions of the circuit breaker. In particular, the hand release is designed as a two-armed swivel lever, the release arm of which is positioned in the rest position on the contact side of the bimetal spring washer. When the bimetal spring washer is in contact, the trigger arm does not touch the bimetal. Rather, it is held contactless in this starting and resting position. This is caused by a spring pressure, which is exerted by the bearing axis of the hand release on its lower leg as a swivel drive. The design is specially designed so that the hand release, which acts as a two-armed swivel lever, is che snap connection is snapped onto the bearing shaft integral with the housing cap. This is a construction that is easy to accomplish in terms of space and is technically easy to assemble and that can also be implemented cost-effectively. Finally, a circuit breaker of the type according to the invention is a mass article. In addition, the hand release is easy and safe to operate, even in the notoriously cramped conditions of many circuit breakers arranged in a row. Whether its triggering movement has brought about the desired contact separation can be recognized unmistakably in the embodiment having an additional separating slide according to claim 2 by the fact that after a manual release, the separating slide protrudes from the switch housing with its pressure end. The actuating arm of the manual release protruding from the housing does not hinder the traceability of the isolating slide by pressurizing the end of its pressure any more than the automatic snap contacting or reclosing of the circuit breaker that is possible after the bimetal has cooled down. Therefore, the subject matter of the invention can easily be implemented even if the construction of the prior art mentioned initially remains unchanged.
Ein Ausführungsbeispiel der Erfindung wird anhand der Figuren beispielsweise erläutert. Es zeigen:An embodiment of the invention is explained for example with reference to the figures. Show it:
Fig. 1 eine perspektivische Explosionsdarstellung der Einzelteile des Schutzschalters.Fig. 1 is an exploded perspective view of the individual parts of the circuit breaker.
Fig. 2 einen Längsschnitt entsprechend der Linie ll-ll in Fig. 1 durch den montierten Schalter in Kontaktstellung des Bimetalls. Fig. 3 eine Darstellung analog Fig. 2 bei in seine maximale Auslösestellung ausgeschwenktem Handauslöser und dementsprechend geöffnetem Schalter.Fig. 2 shows a longitudinal section along the line ll-ll in Fig. 1 by the mounted switch in the contact position of the bimetal. Fig. 3 is an illustration analogous to Fig. 2 with the hand release pivoted into its maximum release position and the switch open accordingly.
Fig. 4 den Schalter in Auslösestellung gemäß Fig. 3 bei losgelassenem Handauslöser.Fig. 4 shows the switch in the release position shown in FIG. 3 with the hand release released.
Fig. 5-7 vergrößerte Ausschnittdarstellungen der Kontakt- und Handauslösebereiche des Schalters nach Fig. 2-4.Fig. 5-7 enlarged detail views of the contact and manual release areas of the switch according to Fig. 2-4.
Fig. 8 eine modifizierte Ausführungsform des Handauslösers 29. Das Funktionsprinzip des Schutzschalters stimmt überein mit dem von EP 0 151 692 B1 und zwar in dessen verbesserter Version gemäß DE 35 26 785 C1. Der vorliegende Patentgegenstand ergänzt diese Konstruktionen durch die Möglichkeit einer Handauslösung von außen, ohne dass dazu wesentliche konstruktive Änderungen am Schalter vorgenommen worden sind. Das ist hier besonders deswegen zu erwähnen, weil im Fall etwaiger Unklarheiten in der folgenden Figurenbeschreibung der Offenbarungsgehalt dieser Druckschriften gelten soll bzw. kann.8 shows a modified embodiment of the hand release 29. The functional principle of the circuit breaker corresponds to that of EP 0 151 692 B1, namely in its improved version according to DE 35 26 785 C1. The subject matter of the patent supplements these constructions by the possibility of manual triggering from the outside, without having to make any significant structural changes to the switch. This should be mentioned here in particular because, in the event of any ambiguities in the following description of the figures, the disclosure content of these documents should or can apply.
Bei dem Überstromschutzschalter ist das aus Isolierwerkstoff bestehende Sockelteil 1 um die beiden zueinander parallel ausgerichteten Flachstecker 2,3 herumgespritzt. Dadurch wird die gehäusefeste Fixierung der Flachstecker 2,3 bewerkstelligt. Die Flachstecker 2,3 stehen mit ihren Steckenden nach außen aus dem Sockelteil 1 hinaus. Ihre gehäuseinneren Enden 4,5 stehen in den Gehäuseinnenraum des Schutzschalters hinein. Über ihre gesamte Längserstreckung verlaufen die Flachstecker 3,4 entsprechend der Vorgabe der DIN-Norm 72581-3 betreffend bekannte, als Schmelzsicherungen wirksame Flachsicherungseinsätze. Die Flachstecker 3,4 verlaufen im Wesentlichen parallelebig zu den Gehäusedeckflächen 6,7 der auf das Sockelteil 1 in Längsrichtung 9 aufschiebbaren Gehäusekappe 8. In Aufschub- bzw. Montagestellung ist die Gehäusekappe 8 am Sockelteil 1 schnappfixiert. Dazu schnappt die Fixieröffnung 10 in der Gehäusedeckfläche 6 auf den Fixierzahn 11 des Sockelteils 1 auf.In the case of the overcurrent protection switch, the base part 1, which is made of insulating material, is injection molded around the two parallel flat connectors 2, 3. As a result, the flat plugs 2, 3 are fixed in place in the housing. The tabs 2, 3 protrude outward from the base part 1 with their plug ends. Their inner ends 4,5 are in the interior of the circuit breaker. The flat plugs 3, 4 run over their entire longitudinal extent in accordance with the specification of DIN standard 72581-3 relating to known flat fuse inserts which are effective as fuses. The flat plugs 3, 4 run essentially parallel to the housing cover surfaces 6, 7 of the housing cap 8 that can be pushed onto the base part 1 in the longitudinal direction 9. In the slide-on or assembly position, the housing cap 8 is snap-fixed to the base part 1. For this purpose, the fixing opening 10 snaps onto the fixing tooth 11 of the base part 1 in the housing cover surface 6.
Die Flachstecker 2,3 haben über ihre gesamte Länge die Querschnittsform eines flachen Rechteckes. Auf dem inneren Ende 4 des Flachsteckers 2 ist die Bimetall- Schnappscheibe 12 mit ihrem Fixierende 13 am Fixierpunkt 14 festgelegt, z.B. aufge- schweißt. Die Bimetall-Schnappscheibe 12 kragt mit ihrem Bewegungsende 15 als Kontaktende in eine Überdeckungsstellung mit dem inneren Ende 5 des anderen Flachsteckers 3 aus. Dieses innere Ende 5 trägt auf seiner Oberseite den ortsfesten Gegenkontakt 16 für den auf der Unterseite des Bewegungsendes 15 der Bimetall- Sprungscheibe 12 fixierten Bewegungskontakt 17.The tabs 2, 3 have the cross-sectional shape of a flat rectangle over their entire length. On the inner end 4 of the tab 2, the bimetallic snap disk 12 is fixed with its fixing end 13 at the fixing point 14, e.g. welded on. The bimetallic snap disk 12 protrudes with its movement end 15 as the contact end into an overlap position with the inner end 5 of the other flat connector 3. This inner end 5 carries on its upper side the stationary counter contact 16 for the movement contact 17 fixed on the underside of the movement end 15 of the bimetallic spring washer 12.
In kaltem Zustand der Bimetall-Sprungscheibe 12 kontaktiert der an deren Bewegungsende 15 fixierte Bewegungskontakt 17 den Gegenkontakt 16 des Flachsteckers 3. Damit ist der Stromweg zwischen den beiden Flachsteckern 2 und 3 geschlossen. Diese Schließstellung ist in den Fig. 2 und 5 dargestellt. In dieser Schließstellung liegt ein Trennschieber 18 an der dem Sockelteil 1 zugewandten Flanke des Bewegungskontaktes 17 an. Er wird durch die gespannte Druckfeder 19 in der Längsrichtung 9 entgegengesetzter Druckrichtung gegen diese Flanke des Bewegungskontaktes 17 gedrängt. Die Druckfeder 19 stützt sich dabei mit ihrem rückseitigen Ende 20 am Sockel 1 ab. Die Stützfläche 21 des Sockels trägt einen Zentrierdorn 22 zur Positionssicherung der als Schraubenfeder ausgebildeten Druckfeder 20 innerhalb des Schaltergehäuses.In the cold state of the bimetallic spring washer 12, the movement contact 17 fixed at the movement end 15 contacts the mating contact 16 of the flat plug 3. The current path between the two tabs 2 and 3 is thus closed. This closed position is shown in FIGS. 2 and 5. In this closed position, a separating slide 18 bears against the flank of the movement contact 17 facing the base part 1. It is pushed by this tensioned compression spring 19 in the longitudinal direction 9 of the opposite pressure direction against this flank of the movement contact 17. The compression spring 19 is supported with its rear end 20 on the base 1. The support surface 21 of the base carries a centering mandrel 22 for securing the position of the compression spring 20 designed as a helical spring within the switch housing.
Der Trennschieber 18 bildet den einen Schenkel eines in Draufsicht (Fig. 1 ) rechtwinkligen Gebildes, dessen anderer, entgegen der Längsrichtung 9 abstehender Schenkel 23 das Druckende 24 des Trennschiebers 18 trägt, welches in Kontaktierungsstel- lung der Kontakte 16,17 (Fig. 2,5) und bei dementsprechend komprimierter Druckfeder 19 innerhalb der Gehäusekappe 8 zwischen den inneren Enden 4,5 der Flachstek- ker 2,3 einliegt und dabei parallel zu den beidseitig positionierten inneren Enden 4,5 der Flachstecker 2,3 ausgerichtet ist.The separating slide 18 forms the one leg of a structure which is rectangular in plan view (FIG. 1), the other leg 23, which projects against the longitudinal direction 9, carries the pressure end 24 of the separating slide 18, which in the contacting position of the contacts 16, 17 (FIG. 2 , 5) and in the correspondingly compressed compression spring 19 lies within the housing cap 8 between the inner ends 4, 5 of the flat plugs 2, 3 and is aligned parallel to the inner ends 4, 5 of the flat plugs 2, 3 positioned on both sides.
Bei einer in Kontaktöffnungsrichtung erfolgenden Trennung der Kontakte 16,17 wird der Bewegungskontakt 17 nicht nur vom Gegenkontakt 16 abgehoben. Vielmehr wird auch die Anlage des Trennschiebers 18 an seiner dem Sockel 1 zugewandten Flanke aufgehoben (Fig. 3,4; 6,7). Dadurch entspannt sich die Druckfeder 19. Sie schiebt den Trennschieber 18 in der Längsrichtung 9 entgegengesetzter Richtung in eine den Festbzw. Gegenkontakt 16 gegenüber dem mit dem Bimetall 12 verbundenen Bewegungskontakt 17 abschirmende Abdeckstellung. In dieser Abdeckstellung schlägt der Trennschieber 18 mit einem aus seiner Unterseite vorstehenden Anschlag 26 an die ihm zugewandte Flanke des Gegenkontaktes 16. Dieser Anschlag begrenzt die Trennschiebebewegung des Trennschiebers 18 und positioniert den Trennschieber 18 in seiner Abschirmstellung gegenüber dem Gegenkontakt 16. Dabei übt die Druckfeder 19 immer noch einen permanenten Druck entgegen der Längsrichtung 9 auf den Trennschieber 18 aus. Bei der geschilderten, durch die expandierende Druckfeder 19 bewirkten Längsverschiebung wird der Trennschieber 18 wie auf einer Schiene auf der Oberfläche des im Gehäuse freiliegenden inneren Endes 5 des Flachsteckers 3 geführt. Da- zu ist an der Unterseite des Trennschiebers 18 eine nach Art einer Spurrille wirksame Führungsausnehmung 27 (Fig. 1 ) vorgesehen.When the contacts 16, 17 are separated in the direction of the contact opening, the movement contact 17 is not only lifted from the counter contact 16. Rather, the abutment of the separating slide 18 on its flank facing the base 1 is also eliminated (FIGS. 3, 4, 6, 7). As a result, the compression spring 19 relaxes. It pushes the separating slide 18 in the longitudinal direction 9 in the opposite direction in a fixed or Counter contact 16 shielding covering position with respect to the movement contact 17 connected to the bimetal 12. In this covering position, the isolating slide 18 strikes with a stop 26 protruding from its underside against the flank of the mating contact 16 facing it. This stop limits the sliding movement of the isolating slide 18 and positions the isolating slide 18 in its shielded position with respect to the mating contact 16. The compression spring 19 exercises still a permanent pressure against the longitudinal direction 9 from the slide valve 18. In the described longitudinal displacement caused by the expanding compression spring 19, the isolating slide 18 is guided as on a rail on the surface of the inner end 5 of the tab 3 exposed in the housing. There- A guide recess 27 (FIG. 1) effective in the manner of a track groove is provided on the underside of the separating slide 18.
In der Trennstellung der beiden Kontakte 16,17 (Fig. 3,4; 6,7) steht das Druckende 24 s des Druckschenkels 23 des Trennschiebers 18 durch die Öffnung 28 der Gehäusekappe 8 nach außen und signalisiert dadurch die vollzogene Kontaktoffnung. Die Erkennbarkeit dieser Signalisierung von außen kann durch eine sich von der Gehäusefarbe abhebende Signalfarbe des Druckendes 24 sichergestellt bzw. verbessert werden.In the disconnected position of the two contacts 16, 17 (FIGS. 3, 4, 6, 7), the printing end 24 s of the pressure limb 23 of the separating slide 18 stands outward through the opening 28 of the housing cap 8 and thereby signals the completed contact opening. The recognizability of this signaling from the outside can be ensured or improved by a signal color of the printing end 24 that is different from the housing color.
ιo Soweit bisher die Funktionsweise des Überstromschutzschalters beschrieben ist, ist diese identisch mit der Funktionsweise des eingangs genannten Standes der Technik, bei welchem die Kontaktöffnung 16,17 durch eine Bimetallauslösung, d.h. durch Erhitzung der Bimetall-Sprungscheibe 12 ausgelöst ist.As far as the operation of the overcurrent protection switch has been described so far, this is identical to the operation of the prior art mentioned at the beginning, in which the contact opening 16, 17 is triggered by a bimetal release, i.e. is triggered by heating the bimetallic spring washer 12.
'5 Erfindungsgemäß ist nun zusätzlich zur Bimetall-Sprungauslösung eine Handauslösung vorgesehen. Dazu ist ein wahlweise die Bimetall-Sprungscheibe 12 aus ihrer Kontaktie- rungsstellung (Fig. 2,5) aushebelnder Handauslöser 29 vorhanden. Dieser ist als zweiarmiger Hebel ausgebildet, welcher aus der den Flachsteckern 2,3 abgewandten Flachseite 30 der Gehäusekappe 8 mit sesinem Betätigungsende hinaussteht. Der '5 According to the invention it is now provided in addition to the bi-metal snap action a manual release. For this purpose, there is a manual trigger 29 optionally levering the bimetal spring washer 12 out of its contact position (FIG. 2.5). This is designed as a two-armed lever, which protrudes from the flat side 30 of the housing cap 8 facing away from the tabs 2, 3 with a sesin actuating end. The
∑o Handauslöser 29 ist dabei neben dem Schenkel 23 bzw. dem Druckende 24 des Trennschiebers 18 auf der dem inneren Ende 5 des Flachsteckers 3 zugewandten Seite positioniert und verläuft mit seiner Längsrichtung 9 parallel zum Schenkel 23.The manual release 29 is positioned next to the leg 23 or the pressure end 24 of the separating slide 18 on the side facing the inner end 5 of the flat plug 3 and extends with its longitudinal direction 9 parallel to the leg 23.
Der Handauslöser 29 beaufschlagt zur Kontaktoffnung das Kontaktende 15 der Bime- 25 tall-Sprungscheibe 12 von deren den Bewegungskontakt 17 tragender Kontaktseite her in Kontaktöffnungsrichtung 25. Diese Beaufschlagung erfolgt durch den Auslösearm 31 des als zweiarmiger Schwenkhebel ausgebildeten Handauslösers 29, der dazu in Auslöserichtung 25 um die mit der Gehäusekappe 8 einstückige Lagerachse 32 hochgeschwenkt wird.The hand release 29 acts on the contact end 15 of the bimetal 25 spring washer 12 from the contact side carrying the movement contact 17 in the contact opening direction 25 to open the contact. This action is effected by the release arm 31 of the hand release 29 designed as a two-armed swivel lever, which for this purpose in the release direction 25 which is pivoted up with the housing cap 8 one-piece bearing axis 32.
3030
Über die Lagerachse 32 nach außen hinaus steht der andere Arm, nämlich der Betätigungsarm 33 des Handauslösers 29. Der Betätigungsarm 33 liegt über seine gesamte Länge außerhalb der Gehäusekappe 8. Dasselbe gilt im Wesentlichen für die Lagerachse 32. Diese ist zwischen den beiden von der Flachseite 30 nach außen abstehenden Haltewangen 34,35 positioniert, die dabei gleichzeitig die Längsführung bzw. - ausrichtung des Handauslösers 29 sicherstellen und integrierter, einstückiger Bestand- s teil der Gehäusekappe 8 und der Lagerachse 32 sind. Die Lagerachse 32 ist außen vor der Gehäuseöffnung 36 positioniert, durch die der Handauslöser 29 in den Gehäuseinnenraum hineinsteht.The other arm, namely the actuating arm 33 of the manual trigger 29, projects outward beyond the bearing axis 32. The actuating arm 33 lies over its entire length Length outside the housing cap 8. The same applies essentially to the bearing axis 32. This is positioned between the two holding cheeks 34, 35 projecting outwards from the flat side 30, which at the same time ensure the longitudinal guidance or alignment of the manual release 29 and is integrated, in one piece Are part of the housing cap 8 and the bearing shaft 32. The bearing axis 32 is positioned on the outside in front of the housing opening 36, through which the manual trigger 29 protrudes into the interior of the housing.
Der Handauslöser 29 ist ein einstückiges, etwa U-förmig gestaltetes Isolierstoffteil, wel- o ches mit seinen beiden U-Schenkeln die Lagerachse 32 umfasst. Der eine, nämlich in den Figuren untere U-Schenkel wird durch den Betätigungsarm 33 und den in Verlängerung an ihn angesetzten, in den Gehäuseinnenraum hineinstehenden Auslösearm 31 gebildet. Die Lagerachse 32 des Handauslösers 29 ist etwa parallel zur Bimetall- Sprungscheibe 12 und zu den Gehäusedeckflächen 6,7 ausgerichtet. Sie verläuft lot- 5 recht zu den Zeichnungsebenen von Fig. 2-7.The manual release 29 is a one-piece, approximately U-shaped insulating material part, which includes the bearing axis 32 with its two U-legs. The one U-leg, namely the lower one in the figures, is formed by the actuating arm 33 and the trigger arm 31 which is attached to it and extends into the interior of the housing. The bearing axis 32 of the manual release 29 is aligned approximately parallel to the bimetallic spring washer 12 and to the housing cover surfaces 6, 7. It runs perpendicular to the drawing planes of FIGS. 2-7.
Der oberhalb der Lagerachse 32 positionierte U-Schenkel des Handauslösers 29 ist als Fixierschenkel 37 mit einer die Lagerachse 32 hintergreifenden, in Richtung auf den Auslöseschenkel 31 vorstehenden Haltenase 38 versehen. 0The U-leg of the manual release 29 positioned above the bearing axis 32 is provided as a fixing leg 37 with a retaining lug 38 which engages behind the bearing axis 32 and projects in the direction of the release leg 31. 0
Außerdem trägt der Fixierschenkel 37 auf seiner Oberseite einen abstehenden und dadurch die Einschublänge des Handauslösers 29 mit Bezug auf die Gehäuseöffnung 36 limitierenden Gehäuseanschlag 39, dessen Anschlagstellung an der Gehäusedeckfläche 6 aus den Fig. 2,5 ersichtlich ist. Das Querhaupt 40 der U-Form des außenliegen- 5 den Endes des Betätigungsarmes 33 des Handauslösers 29 bildet dessen außenliegendes Ende.In addition, the fixing leg 37 carries on its upper side a protruding housing stop 39, which thereby limits the insertion length of the manual release 29 with respect to the housing opening 36, the stop position of which on the housing top surface 6 can be seen from FIGS. 2.5. The crosshead 40 of the U-shape of the outer end of the actuating arm 33 of the hand release 29 forms its outer end.
Der untere U-Schenkel, nämlich der Auslösearm 31 des Handauslösers 29 ist etwa im Mittelbereich seiner Längserstreckung zur Bildung der Lagerschale 41 an seiner Innen- 0 flanke ausgemuldet. Der Handauslöser 29 ist durch eine bewegliche Schnappverbindung auf die Lagerachse 32 aufgeschnappt. Dazu umfasst er mit seinen beiden U-Schenkeln als integrierte Schnapper und/oder als mit dem Schnapper zusammenwirkende Gegenflächen die Lagerachse 32 federelastisch. Die Lagerachse weist eine bei der Auslöseschwenkung 42 des Handauslösers 29 dessen U-Schenkel elastisch aufspreizende Querschnittsform auf derart, dass der durch die Auspreizung gespeicherte elastische Federdruck als den Handauslöser 29 selbsttätig in seine Ausgangs-Schwenkstellung entgegen der Auslöseschwenkung 42 zurückschwenkender Rückstelldruck wirksam ist. Diese Querschnittsform ist durch eine gewisse Asymmetrie gekennzeichnet. Diese Asymmetrie besteht darin, dass die die U-Schenkel 31 ,37 in Auslöseschwenkstellung (Fig. 3,6) beaufschlagende Querschnittsabmessung der Lagerachse 32 größer ist als die die U-Schenkel 31 ,37 in Ruhestellung (Fig. 2,4,5,7,8) des Handauslösers beaufschlagende Querschnittsabmessung. Diese Asymmetrie schafft auch eine Gegenan- schlagfläche für die Haltenase 38 und einen Schwenkanschlag 44 für den Betätigungsarm 33 zur Begrenzung des Schwenkbereiches des Handauslösers 29.The lower U-leg, namely the trigger arm 31 of the manual trigger 29, is hollowed out approximately in the central region of its longitudinal extent to form the bearing shell 41 on its inner flank. The manual trigger 29 is snapped onto the bearing axis 32 by a movable snap connection. For this purpose, it includes the bearing axis 32 with its two U-legs as an integrated snapper and / or as counter surfaces interacting with the snapper. The bearing axis has a cross-sectional shape which elastically spreads when the trigger 42 of the manual trigger 29 has its U-leg in such a way that the elastic spring pressure stored by the expansion acts as the manual trigger 29 automatically returning to its initial pivot position counter to the trigger pivot 42. This cross-sectional shape is characterized by a certain asymmetry. This asymmetry consists in the fact that the cross-sectional dimension of the bearing axis 32 acting on the U-legs 31, 37 in the release pivot position (FIG. 3.6) is larger than that on the U-legs 31, 37 in the rest position (FIGS. 2,4,5, 7.8) of the cross-sectional dimension acting on the manual release. This asymmetry also creates a counter abutment surface for the retaining lug 38 and a swivel stop 44 for the actuating arm 33 to limit the swivel range of the manual trigger 29.
Die U-Form und die federelastische Konsistenz des Handauslösers 29 haben in Gemeinsamkeit mit der von einem Kreis abweichenden und mehr einer Ellipse angenäherten Querschnittsform der Lagerachse 32 eine Reihe von Vorteilen. Unabhängig von der Querschnittsform der Lagerachse 32 ist die einfache Schnappmontage des Handauslösers 29 auf der Lagerachse 32 in einer deren unverlierbare Halterung gewährleistenden Weise. Der Handauslöser 29 wird einfach von außen mit in der Gehäuseöffnung 36 einliegenden U-Schenkelenden aufgeschoben und dabei aufgeschnappt. Die Aufschu- bend- bzw. -ruhestellung ist in den Fig. 5,7 dargestellt. Dabei liegt der Auslösearm 31 des Handauslösers 29 unterhalb des Bimetalls 12. Wird der Handauslöser 29 im Uhrzeigersinn um die Lagerachse 32 geschwenkt, so wird das Auslöseende 31 angehoben. Es untergreift die Bimetall-Sprungscheibe 12 und hebt sie in eine den Kontakt 17 vom Gegenkontakt 16 abhebende Position. Dadurch wird die Anlage des Trennschiebers 18 am Bewegungskontakt 17 freigegeben und der Trennschieber fährt unter dem Druck der Druckfeder 19 in seine Abdeckstellung (Fig. 3,6), die eine Wiedereinschaltung, nämlich eine Rückführung des Bimetalls 12 bzw. des mit ihm verbundenen Bewegungskontaktes 17 in seine Kontaktierungsstellung unmöglich macht. Wird der im Uhr- zeigersinn von außen auf den Betätigungsarm 33 des Handauslösers ausgeübte Schwenkdruck P (Fig. 3,6) aufgehoben, der Handauslöser 29 also losgelassen, so schwenkt er aufgrund des aufgespeicherten, zwischen seinen beiden U-Schenkeln wirksamen und von der Lagerachse ausgeübten Spreizdruckes im Gegenuhrzeigersinn zurück in die in den Fig. 4 und 7 dargestellte Ausgangsstellung, in welcher der Auslösearm 31 einen deutlichen Abstand sowohl vom Bimetall 12 als auch von dem inneren Ende 5 des Flachsteckers 3 einhält.The U-shape and the resilient consistency of the hand release 29 have a number of advantages in common with the cross-sectional shape of the bearing axis 32 that deviates from a circle and approximates an ellipse. Regardless of the cross-sectional shape of the bearing axis 32, the simple snap mounting of the manual release 29 on the bearing axis 32 is in a manner ensuring its captive mounting. The hand release 29 is simply pushed on from the outside with the U-leg ends lying in the housing opening 36 and snapped on in the process. The suspension or rest position is shown in FIGS. 5, 7. The trigger arm 31 of the manual trigger 29 is below the bimetal 12. If the manual trigger 29 is pivoted clockwise around the bearing axis 32, the trigger end 31 is raised. It engages under the bimetallic spring washer 12 and lifts it into a position that lifts the contact 17 from the mating contact 16. As a result, the contact of the separating slide 18 on the movement contact 17 is released and the separating slide moves under the pressure of the compression spring 19 into its covering position (FIG. 3.6), which switches on again, namely a return of the bimetal 12 or the movement contact 17 connected to it impossible in its contacting position. If the counter-clockwise exerted on the actuating arm 33 of the hand release pivoting pressure P (Fig. 3.6) released, so the hand release 29 released, it pivots back due to the stored, effective between its two U-legs and exerted by the bearing axis exerted by the bearing axis counterclockwise in the initial position shown in FIGS. 4 and 7, in which the trigger arm 31 maintains a clear distance both from the bimetal 12 and from the inner end 5 of the tab 3.
Fig. 8 zeigt eine modifizierte Ausführungsform des Handauslösers 29. Die Modifizierung betrifft die Anordnung eines über die Kopffläche 45 des Querhauptes 40 des Handauslösers 29 nach außen hinausstehenden Betätigungssporns 46. Der Betätigungssporn 46 steht in der Längserstreckung des Auslösearmes 31 entgegengesetzter Richtung nach außen ab und ist etwa dort positioniert, wo sich die Längsrichtungen von Querhaupt 40 und Auslösearm 31 bzw. Betätigungsarm 33 schneiden. Wesentlich ist dabei die zur Lagerachse 32 sowohl in der Horizontalen als auch in der Vertikalen bezüglich Fig. 8 außermittig versetzte Anordnung derart, dass nahezu jede auf den Betätigungssporn ausgeübte Druckeinwirkung unabhängig von der Druckrichtung eine Kraftkomponente erzeugt, die in eine den Schutzschalter auslösende Schwenkbewegung des Handauslösers 29 umgesetzt wird. Die Schwenkrichtung 47 bzw. das aus ihr resultierende Drehmoment ist durch den Richtungspfeil 47 kenntlich gemacht. Die in gleicher Weise zu einer solchen Drehmomentwirkung führenden Beaufschlagungsrichtungen 48, 49 sind ebenfalls durch Richtungspfeile verdeutlicht.8 shows a modified embodiment of the manual release 29. The modification relates to the arrangement of an actuating spur 46 projecting outward beyond the head surface 45 of the crosshead 40 of the manual trigger 29. The actuating spur 46 projects in the longitudinal direction of the trigger arm 31 in the opposite direction to the outside and is positioned approximately where the longitudinal directions of crosshead 40 and release arm 31 or actuating arm 33 intersect. What is essential here is the arrangement which is offset off-center to the bearing axis 32 both horizontally and vertically with respect to FIG. 8 such that almost every pressure effect exerted on the actuating spur generates a force component, irrespective of the pressure direction, which results in a pivoting movement of the manual release triggering the circuit breaker 29 is implemented. The pivoting direction 47 or the torque resulting from it is indicated by the directional arrow 47. The directions of action 48, 49 which lead to such a torque effect in the same way are also illustrated by directional arrows.
Darüber hinaus ist der Handauslöser 29 in einer analog den Sicherungsfarben nach DIN 72581-3 ausgewählten, zur Gehäusefarbe deutlich kontrastierenden Farbe gehalten, welche auch in Reihenanordnung eine sichere Auswahl und Handbetätigung erleichtert. BezugszeichenlisteIn addition, the manual release 29 is held in a color selected analogously to the safety colors according to DIN 72581-3 and clearly contrasting with the housing color, which also facilitates safe selection and manual operation in a row arrangement. Reference list
Sockelteil 26 AnschlagBase part 26 stop
Flachstecker 27 FührungsausnehmungFlat connector 27 guide recess
Flachstecker 28 Öffnung inneres Ende 29 Handauslöser inneres Ende 30 Flachseite, BodenFlat connector 28 opening inner end 29 hand release inner end 30 flat side, bottom
Gehäusedeckfläche 31 AuslösearmHousing cover surface 31 trigger arm
Gehäusedeckfläche 32 LagerachseHousing cover surface 32 bearing axis
Gehäusekappe 33 BetätigungsarmHousing cap 33 operating arm
Längsrichtung 34 HaltewangeLongitudinal direction 34 retaining cheek
Fixieröffnung 35 HaltewangeFixing opening 35 retaining cheek
Fixierzahn 36 GehäusedurchtrittsöffnungFixing tooth 36 housing passage opening
Bimetall-Sprungscheibe 37 FixierschenkelBimetal spring washer 37 fixing leg
Fixierende 38 HaltenaseFixing 38 retaining nose
Fixierpunkt 39 GehäuseanschlagFixing point 39 housing stop
Bewegungsende 40 QuerhauptEnd of movement 40 crosshead
Gegenkontakt 41 LagerschaleMating contact 41 bearing shell
Bewegungskontakt 42 AuslöseschwenkungMovement contact 42 Trigger swivel
Trennschieber 43 GegenanschlagflächeSlider 43 counter-stop surface
Druckfeder 44 SchwenkanschlagCompression spring 44 swivel stop
Ende 45 KopfflächeEnd 45 head area
Stützfläche 46 BetätigungsspornSupport surface 46 actuation spur
Zentrierdorn 47 DrehrichtungCentering mandrel 47 direction of rotation
Schenkel 48 KrafteinwirkungLeg 48 application of force
Druckende 49 KrafteinwirkungEnd of pressure 49
Kontaktöffnungsricht. Contact opening direction.

Claims

Ansprüche Expectations
1. Schutzschalter zur Absicherung der Stromkreise von Kraftfahrzeugen, mit einem zur raumsparenden Aneinanderreihung flachquaderähnlichen Isolier- stoffgehäuse und dieses mit zwei zueinander im Wesentlichen parallelen Deckflächen (6,7),1. Circuit breaker for protecting the electrical circuits of motor vehicles, with an insulating housing which is similar to a flat cuboid for space-saving arrangement and this with two cover surfaces (6, 7) which are essentially parallel to one another,
- wobei aus einer Gehäuseseitenwand mit ihrer Flachebene parallell zu den beiden Gehäusedeckflächen (6,7) ausgerichtete Flachstecker (2,3) für die Kontak- tierung mit einem Flachsicherungshalter hinausstehen, - wobei die von den Flachsteckern (2,3) durchsetzte Gehäuseseitenwand durch ein die Flachstecker (2,3) tragendes Sockelteil (1 ) gebildet ist, während die anderen Gehäusewände Teile einer auf das Sockelteil (1 ) aufgeschobenen, insbesondere mit diesem verschnappten, die Schalterfunktionsteile umgebenden Gehäusekappe (8) sind und - wobei die Flachstecker (2,3) mit ihren gehäuseseitigen Enden nebeneinanderstehend in den Gehäuseinnenraum hineinragen und durch eine am einem Flachstecker (2) fixierte, bei Überstrom die Kontaktierung öffnende Bimetall- Sprungscheibe (12) miteinander verbunden sind. dadurch gekennzeichnet, - dass die Gehäusekappe (8) an ihrem in Montagestellung dem Sockelteil (1 ) gegenüberliegenden Boden (30) eine Durchtrittsöffnung (36) für einen die Bimetall-Sprungscheibe (12) aus ihrer Kontaktierungsstellung aushebelnden Handauslöser (29) aufweist,- Where flat tabs (2, 3) for contacting a flat fuse holder protrude from a side wall of the housing with its flat plane parallel to the two top surfaces (6, 7) of the housing, through which the flat connectors (2, 3) pass through the base part (1) carrying the flat plug (2, 3) is formed, while the other housing walls are parts of a housing cap (8) pushed onto the base part (1), in particular snapped with it, surrounding the switch functional parts, and - the flat plug (2, 3) project with their ends on the housing side by side into the interior of the housing and are connected to each other by a bimetallic spring washer (12) fixed to a flat connector (2) and opening in the event of overcurrent. characterized in that the housing cap (8) has, on its base (30) opposite the base part (1) in the installed position, a passage opening (36) for a hand release (29) levering the bimetal spring washer (12) out of its contacting position,
- dass die Durchtrittsöffnung eine quer zur Durchtrittsrichtung verlaufende, paral- lel zur Erstreckungsebene der Bimetall-Sprungscheibe (12) ausgerichtete und einstückig an die Gehäusekappe (8) angeformte Lagerachse (32) für den Handauslöser (29) enthält und dass der Handauslöser (29) derart von außen auf die Lagerachse (32) aufgeschnappt ist, dass er in Aufschnappstellung nach Art eines zweiarmigen Hebels einerseits die Bimetall-Sprungscheibe (12) mit einem in den Schalterinnenraum hineinragenden Auslösearm (31 ) zu deren wahlweiser Beaufschlagung in Kontakt-Öffnungsrichtung untergreift und andererseits mit einem Betätigungsen- de (33) über die durch den Boden der Gehäusekappe (8) gebildete Gehäuseseitenwand (30) nach außen hinaussteht.- That the passage opening contains a bearing axis (32) for the hand release (29), which runs parallel to the direction of passage, parallel to the plane of extension of the bimetal spring washer (12) and is integrally formed on the housing cap (8), and that the hand release (29) is snapped onto the bearing axis (32) from the outside in such a way that, in the snap-on position in the manner of a two-armed lever, it engages under the bimetallic spring washer (12) with a trigger arm (31) protruding into the interior of the switch for its optional action in the contact opening direction and on the other hand with an actuation de (33) protrudes outwards beyond the housing side wall (30) formed by the bottom of the housing cap (8).
2. Schutzschalter nach Anspruch 1 , s gekennzeichnet durch einen im Gehäuseinnenraum angeordneten, bei Kontaktoffnung infolge Federdruk- kes zwischen die Kontakte (16,17) hineinfahrenden und diese voneinander distanzierenden Trennschieber (18), der über ein neben der Gehäusedurchtrittsöffnung (36) für den Handauslöser (29) aus derselben Gehäuseseite (30) wie der 0 Handauslöser (29) herausstehendes Druckende (24) aus seiner Trennstellung zwischen den Kontakten (16,17) gegen den Federdruck zurückstoßbar ist.2. Circuit breaker according to claim 1, s characterized by a arranged in the housing interior, when opening contact due to Federdruk- kes between the contacts (16,17) and this spacing isolating slide (18), which via a next to the housing opening (36) for the Manual release (29) from the same housing side (30) as the 0 manual release (29) protruding print end (24) from its disconnected position between the contacts (16, 17) can be repelled against the spring pressure.
3. Schutzschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, 5 dass der Handauslöser (29) ein einstückiges, etwa U-förmig gestaltetes Isolierstoffteil ist, welches mit seinem beiden U-Schenkeln die Lagerachse (32) form-und kraftschlüssig umfasst und dessen die Bimetall-Sprungscheibe untergreifender U- Schenkel den Auslösearm (31 ) bildet.3. Circuit breaker according to claim 1 or 2, characterized in 5 that the manual release (29) is a one-piece, approximately U-shaped insulating material part, which with its two U-legs encompasses the bearing axis (32) in a positive and non-positive manner and whose B-metal spring washer under the U-leg forms the release arm (31).
0 4. Schutzschalter nach Anspruch 3, dadurch gekennzeichnet, dass der nicht den Auslösearm (31 ) bildende, andere U-Schenkel des Handauslösers (29) als Fixierschenkel (37) mit einer in Montagestellung die Lagerachse (32) hintergreifenden, in Richtung auf den Auslöseschenkel (31 ) vorstehenden Haltena- 5 se (38) versehen ist.4. Circuit breaker according to claim 3, characterized in that the other U-leg of the hand release (29) not forming the release arm (31) as the fixing leg (37) engages behind the bearing axis (32) in the mounting position in the direction of the Trigger leg (31) protruding retaining lug (38) is provided.
5. Schutzschalter nach Anspruch 4, gekennzeichnet durch einen vom Fixierschenkel (37) nach außen abstehenden, die Einschublänge des 0 Handauslösers (29) in das Gehäuse limitierenden Gehäuseanschlag (39). 5. Circuit breaker according to claim 4, characterized by a projecting from the fixing leg (37) outwardly, the insertion length of the 0 manual release (29) into the housing limiting housing stop (39).
6. Schutzschalter nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Querhaupt (40) der U-Form das außenliegende Betätigungsende des Betätigungsarmes (33) des Handauslösers (29) bildet.6. Circuit breaker according to one or more of the preceding claims, characterized in that the crosshead (40) of the U-shape forms the outer actuating end of the actuating arm (33) of the manual release (29).
7. Schutzschalter nach Anspruch 6, dadurch gekennzeichnet, dass der den Auslösearm des Handauslösers (29) bildende U-Schenkel (31 ,37) etwa im Mittenbereich seiner Längserstreckung auf seiner Innenseite zur Bildung einer Lagerschale (41 ) für die Lagerachse (32) ausgemuldet ist.7. Circuit breaker according to claim 6, characterized in that the trigger arm of the manual release (29) forming the U-leg (31, 37) troughed approximately in the central region of its longitudinal extent on its inside to form a bearing shell (41) for the bearing axis (32) is.
8. Schutzschalter nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Handauslöser (29) mit seinen beiden U-Schenkeln (31 ,37) als integrierte Schnapper die Lagerachse (32) leicht federelastisch beaufschlagend umfasst.8. Circuit breaker according to one or more of the preceding claims, characterized in that the manual release (29) with its two U-legs (31, 37) as an integrated catch includes the bearing axis (32) in a slightly resilient manner.
9. Schutzschalter nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Lagerachse (32) eine bei der Auslöseschwenkung (42) des Handauslösers (29) deren U-Schenkel elastisch aufspreizende Querschnittsform aufweist derart, dass der durch die Aufspreizung gespeicherte elastische Federdruck als den Handauslöser (29) selbsttätig in seine Ausgangs-Schwenkstellung zurückschwenkender Rückstelldruck wirksam ist.9. Circuit breaker according to one or more of the preceding claims, characterized in that the bearing axis (32) has a cross-sectional shape which is elastically spreading when the trigger is pivoted (42) of the manual release (29) such that the elastic spring pressure stored by the spreading has as the manual release (29) automatically returns to its initial pivoting position, the return pressure is effective.
10. Schutzschalter nach Anspruch 9, dadurch gekennzeichnet, dass die die U-Schenkel (31 ,37) in Auslöseschwenkstellung (Fig. 3,6) beaufschlagende Querschnittsabmessung der Lagerachse (32) größer ist als die die U- Schenkel (31 ,37) in Ruhestellung (Fig. 2,4,5,7,8) des Handauslösers (29) beaufschlagende Querschnittsabmessung. 10. Circuit breaker according to claim 9, characterized in that the cross-sectional dimension of the bearing axis (32) acting on the U-legs (31, 37) in the release pivot position (Fig. 3.6) is larger than that of the U-legs (31, 37) in the rest position (Fig. 2,4,5,7,8) of the hand release (29) acting cross-sectional dimension.
11. Schutzschalter nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass der Handauslöser (29) ein einstückiges Kunststoffspritzteil ist.11. Circuit breaker according to claim 9 or 10, characterized in that the manual release (29) is a one-piece plastic injection molded part.
12. Schutzschalter nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Handauslöser (29) an seiner Außenseite einen abstehenden Betätigungssporn (46) trägt, der gegenüber der Lagerachse (32) außermittig etwa im Bereich des Aufeinandertreffens der Linksrichtungen des Auslösearms (31 ) bzw. des Betätigungsarms (33) einerseits und des Querhauptes (40) andererseits positioniert ist.12. Circuit breaker according to one or more of the preceding claims, characterized in that the manual release (29) carries on its outside a protruding actuating spur (46) which is eccentric with respect to the bearing axis (32) approximately in the area where the left-hand directions of the release arm (31 ) or the actuating arm (33) on the one hand and the crosshead (40) on the other hand.
13. Schutzschalter nach Anspruch 12, dadurch gekennzeichnet, dass der Betätigungssporn (46) in den Längsrichtungen des Auslösearmes (31 ) bzw. des Betätigungsarmes (33) entgegengesetzter Richtung vom Querhaupt (40) absteht.13. Circuit breaker according to claim 12, characterized in that the actuating spur (46) projects in the longitudinal directions of the trigger arm (31) or the actuating arm (33) in the opposite direction from the crosshead (40).
14. Schutzschalter nach einem oder mehreren der vorhergehenden Ansprüche, gekennzeichnet durch eine mit der Gehäusefarbe kontrastierende Farbgebung des Handauslösers (29) insbesondere analog den Sicherungsfarben nach DIN72581-3 entsprechend unterschiedlichen Stromstärken des jeweiligen abzusichernden Stromkreises. 14. Circuit breaker according to one or more of the preceding claims, characterized by a color of the manual release (29) which contrasts with the housing color, in particular analogously to the fuse colors according to DIN72581-3, corresponding to different current strengths of the respective circuit to be protected.
EP99968780A 1998-12-09 1999-11-05 Circuit breaker protecting electric circuits in road vehicles Expired - Lifetime EP1141987B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19856707A DE19856707A1 (en) 1998-12-09 1998-12-09 Circuit breaker for protecting circuits
DE19856707 1998-12-09
PCT/EP1999/008501 WO2000034971A1 (en) 1998-12-09 1999-11-05 Circuit breaker protecting electric circuits in road vehicles

Publications (2)

Publication Number Publication Date
EP1141987A1 true EP1141987A1 (en) 2001-10-10
EP1141987B1 EP1141987B1 (en) 2002-10-16

Family

ID=7890453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99968780A Expired - Lifetime EP1141987B1 (en) 1998-12-09 1999-11-05 Circuit breaker protecting electric circuits in road vehicles

Country Status (8)

Country Link
US (1) US6590489B1 (en)
EP (1) EP1141987B1 (en)
JP (1) JP4205862B2 (en)
KR (1) KR100532791B1 (en)
CN (1) CN1184660C (en)
AT (1) ATE226357T1 (en)
DE (2) DE19856707A1 (en)
WO (1) WO2000034971A1 (en)

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Also Published As

Publication number Publication date
US6590489B1 (en) 2003-07-08
CN1324493A (en) 2001-11-28
KR20010089387A (en) 2001-10-06
ATE226357T1 (en) 2002-11-15
DE19856707A1 (en) 2000-06-21
DE59903125D1 (en) 2002-11-21
WO2000034971A1 (en) 2000-06-15
EP1141987B1 (en) 2002-10-16
JP2002532826A (en) 2002-10-02
CN1184660C (en) 2005-01-12
JP4205862B2 (en) 2009-01-07
KR100532791B1 (en) 2005-12-02

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