EP1439558A1 - Contact arrangement for switching device - Google Patents

Contact arrangement for switching device Download PDF

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Publication number
EP1439558A1
EP1439558A1 EP03000985A EP03000985A EP1439558A1 EP 1439558 A1 EP1439558 A1 EP 1439558A1 EP 03000985 A EP03000985 A EP 03000985A EP 03000985 A EP03000985 A EP 03000985A EP 1439558 A1 EP1439558 A1 EP 1439558A1
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EP
European Patent Office
Prior art keywords
contact
arrangement according
arrangement
area
switching
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
EP03000985A
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German (de)
French (fr)
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EP1439558B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jean Mueller Elektrotechnische Fabrik GmbH
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Jean Mueller Elektrotechnische Fabrik 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.)
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Application filed by Jean Mueller Elektrotechnische Fabrik GmbH filed Critical Jean Mueller Elektrotechnische Fabrik GmbH
Publication of EP1439558A1 publication Critical patent/EP1439558A1/en
Application granted granted Critical
Publication of EP1439558B1 publication Critical patent/EP1439558B1/en
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H01H1/365—Bridging contacts

Definitions

  • the invention relates to a contact arrangement for an electrical switching device, in particular a low-voltage switch, with an actuator for recording one contact and another stationary one assigned to this contact Contact.
  • Contact systems for such requirements usually consist of one Arrangement of contacts in which the contact surfaces are essentially vertical are arranged to the direction of movement. This affects orders with two fixed contacts and a bridge contact or arrangements with one Fixed contact in combination with a rotatable movable contact piece, that on the side facing away from the contact via strands or via conductive Bearing elements is contacted.
  • a contact arrangement of the type mentioned is, for example, from the EP 0 496 213 A1 is known. There is a steady contact on both sides of in different linear, movable actuators spring-loaded contacts applied. Both the fixed contact and the moving contacts are plate-shaped. The contact area in which the switching of the Contact takes place, simultaneously provides the current-carrying after switching Area represents. This contact arrangement thus has the previously described Disadvantages.
  • a contact arrangement of the type mentioned is also from DE 30 10 579 A1 known. Also there act on opposite sides of a stationary one Contact movable contacts with this together. However, the Do not make contact by moving the movable plates perpendicular to the plate plane be moved in the direction of the stationary contact, but in the plane of the plate. With this contact arrangement, too, there is no separation of a switching area and a current-carrying area of the contacts.
  • this does not affect a contact arrangement using an actuator to accommodate a consequent movable contact for the purpose of contacting another, stationary contact, but a contact body for receiving a contact knife Fuse link.
  • This contact body has one when inserting the Fuse insert in the slot of the contact body leading area, which has the function of a switch contact, as well as a this area lagging area, which has the function of a permanent contact.
  • the permanent contact takes place in the front areas of the contact body plate.
  • the object of the invention is a contact arrangement of the aforementioned To create type that has easy to manufacture elements, the inevitable Arc erosion of the switching processes the current carrying capacity or the contact resistance of the closed contact arrangement is not negative impaired.
  • the contact arrangement should also, without special contact requirements, offer high reliability (low heating) when carrying current.
  • the problem is solved with a contact arrangement in the aforementioned Kind in that the contact arrangement has two areas, the switching and current carrying functions are clearly assigned, whereby the Switching area of an end face of a contact and a counter surface of the is assigned to other contact, and the current carrying area is wedge-shaped arranged surfaces of one contact and counter surfaces of the other Contact, which are arranged in a corresponding wedge shape, is assigned.
  • the switching work on the End face of a contact is provided while the current is flowing closed contacts via the contact flanks, which are wedge-shaped are arranged.
  • the wedge shape leads to a strong increase in force on the Contact area, with relatively low forces for operating the system, specifically of the actuator. Wear problems are not expected because hardly any Arc erosion occurs at these contact surfaces. So it does not occur Disadvantage as with parallel contacting with safety knives; there leave strong fluctuations in the coefficient of friction of the contact arrangement the power requirement a switching mechanism does not calculate safely.
  • the contact arrangement according to the invention can be used in different systems be realized. So there is the possibility of the contact arrangement as Bridge contact arrangement with two identical stationary contacts train. Multi-pole contact arrangements are conceivable, with these the stationary contacts preferably in a common control part are stored.
  • the actuator is particularly straight adjustable and consequently designed as a slide. It is also conceivable to turn the control part store, so that the switching of the contact arrangement is not by a straight line Movement, but a rotary movement of the actuator is brought about.
  • the movable contact a trapezoidal cross-section or a trapezoidal outer contour. He thus presents itself as a trapezoidal contact.
  • the contact is advantageously resilient in the Control part stored. Through this spring this contact is made against the other, stationary contact pressed for current supply.
  • the movable contact preferably formed as a solid body it is considered advantageous with regard to stationary contact if it is designed as a plate body. Because of this design, this can Contact can be bent and punched as desired, especially around the side Plate areas and a central, bent out of the plate level Form plate area.
  • the facing end faces of the side Plate areas are arranged in a wedge shape and form the current-carrying areas Mating surfaces of this contact while the plate area is bent out is designed in the manner of a rag, which is the button counter surface of this Forms contact.
  • the bent tab is on the side facing away from the contact area Side preferably loaded by force, for example by being one-sided supported leaf spring abuts a housing projection of the switching device and so the flexibility of the switch flap when inserting the movable Limited contact in the switching range.
  • the switching takes place under a bias, that is, a sufficiently high contact force between the Rag of the stationary contact and the counter surface of the movable Contact.
  • FIGS 3 referred to the essential parts of the switching device 1 in the area of a fuse link 2 for the switching state "off".
  • the representation in Figures 2 and 3 is for reasons of 1 shows the more precise representation of the components relevant to the invention Housing 3 of the switching device 1 is not illustrated.
  • a slide 4 is horizontally displaceable stored in the housing 3, which consists of various horizontal and vertical Wall sections is formed. Its longitudinal axis is designated by reference number 5.
  • the slider 4 is in the area of interest of the switching device 1 with two passes 6 provided that push the slider 4 vertically. Every run 6 forms two areas 7 and 8.
  • the area 7, viewed vertically, has one trapezoidal cross-section, while the area 8 a rectangular Cross section.
  • a contact 9 is mounted in the respective passage 6. It penetrates the area 7 of the passage 6 and has one of the trapezoidal shape of the area 7 adapted trapezoidal cross-section.
  • the respective passage 6 takes also a coil spring 10, which is arranged substantially in the area and on the large parallel surface 11 of the trapezoidal contact 9 supported.
  • the contact 9 becomes wedge-shaped in the area of it arranged surfaces 12 against the corresponding wedge-shaped Counter surfaces of the slide 4 and / or the spring-facing surface of the contact biased.
  • the respective contact 9 has such a length that it extends over both ends of the protrudes upper surface 13 and lower surface 14 of the slide.
  • the supernatant is the same and dimensioned so that in the area of the supernatant is sufficient Area for contacting the assigned stationary contacts 15 remains.
  • the contact body 9 forms due to this design in the area of from the slider 4 projecting areas two contacts 16, which with the Contacts 15 can be brought into operative connection.
  • the contact body 17, which contains the respective stationary contact 15, is formed as a plate which is mounted in the housing 3.
  • the contact body 17 takes, in the case of the embodiment, a contact element in the region of one end 18 into which the contact blade 19 of the fuse link 2 (NH fuse link) is insertable.
  • the plate-shaped contact body 17 is around Angled 90 °, and the angled end portion 20 in the immediate vicinity positioned to the slide 4 substantially parallel to this.
  • the angled one End section 20 has lateral plate regions 21 and a central, plate area 22 bent out of the plate plane.
  • the mutually facing vertical end faces 23 of the side plate areas 21 are arranged in a wedge shape relative to one another, corresponding to the wedge shape of the contact body 7.
  • the central, bent plate area 22 is lobed trained and is in the manner of a single-sided leaf spring, the with their free, in the direction of the slider 4 area in the path of Contact 16 protrudes, specifically its upper or lower end face 25.
  • the contact arrangement is in the form of a bridge contact arrangement formed with the contact body 9.
  • FIGs 1 to 3 show the switching state "off".
  • the slide 4 is located itself in its relatively right position, in which the respective moving contact 16 is disengaged from the associated stationary contact 15.
  • the slide 4, as illustrated in FIGS. 6 and 7, continues to follow Moving to the rear, the contact 16 continues to contact the central plate area 22, but also arrives with its two wedge-shaped surfaces 12 in contact with the correspondingly arranged in wedge end faces 23 of the lateral plate areas 21.
  • the contact body 9 lies in the area of the respective Contact 16 over the entire length of the end faces 23 of the side Plate areas 21 on this.
  • the spring 10 presses the contact body 9 between the side plate regions 21 of the two associated contacts 15.
  • the wedge-shaped areas of the contact arrangement are therefore clear assigned the current carrying function.

Landscapes

  • Push-Button Switches (AREA)
  • Slide Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The contacts (15, 16) have two regions. Each is associated exclusively with either switching or current-carrying. One contact (16) end face (25) and an opposite surface (22) of another contact (15) carry out switching. The current-carrying regions are formed by wedge surfaces (12) on the first contact (16) and correspondingly-shaped opposite surfaces (23) on the second (15).

Description

Die Erfindung betrifft eine Kontaktanordnung für ein elektrisches Schaltgerät, insbesondere einen Niederspannungs-Lastschalter, mit einem Stellteil zur Aufnahme eines Kontaktes und einem diesem Kontakt zugeordneten anderen, stationären Kontakt. The invention relates to a contact arrangement for an electrical switching device, in particular a low-voltage switch, with an actuator for recording one contact and another stationary one assigned to this contact Contact.

Elektrische Schaltgeräte finden in der Praxis vielfältig Verwendung. Bei Lastschaltgeräten handelt es sich speziell um solche Geräte, die normale Lasten und Überlasten schalten. Derartige Geräte weisen jedoch kein eigenes Kurzschlussschaltvermögen auf. Unter diesem Aspekt sind Leistungsschalter bekannt. Lastschaltgeräte werden im Kurzschlussfall durch Geräte mit einem Kurzschlussschaltvermögen geschützt. Hierbei handelt es sich häufig um Sicherungen, die auch Bestandteil des Schaltgerätes sein können, sogenannte Lastschalter mit Sicherungen.Electrical switching devices are used in many different ways in practice. For load switchgear it is specifically those devices that carry normal loads and switch overloads. However, such devices do not have their own Short-circuit switching capacity. From this point of view are circuit breakers known. In the event of a short circuit, load switching devices are replaced by devices with a Short-circuit switching capacity protected. These are often backups, which can also be part of the switching device, so-called Load switch with fuses.

Kontaktsysteme für derartige Anforderungen bestehen in der Regel aus einer Anordnung von Kontakten, bei denen die Kontaktflächen im Wesentlichen senkrecht zur Bewegungsrichtung angeordnet sind. Dies betrifft Anordnungen mit zwei Festkontakten und einem Brückenkontakt oder Anordnungen mit einem Festkontakt in Kombination mit einem drehbar gelagerten beweglichen Kontaktstück, dass auf der kontaktabgewandten Seite über Litzen oder über leitfähige Lagerelemente kontaktiert wird.Contact systems for such requirements usually consist of one Arrangement of contacts in which the contact surfaces are essentially vertical are arranged to the direction of movement. This affects orders with two fixed contacts and a bridge contact or arrangements with one Fixed contact in combination with a rotatable movable contact piece, that on the side facing away from the contact via strands or via conductive Bearing elements is contacted.

Kritisch ist bei derartigen Anordnungen die Optimierung auf die unterschiedlichen Anwendungsfälle. So muss neben den Funktionen Ein- und Ausschalten auch die Funktion Isolieren (Aus) und Stromführen (Ein) sicher erfüllt werden. Dies gilt insbesondere auch nach diversen Lichtbogenbeanspruchungen durch Schaltvorgänge. Recht gute Eigenschaften lassen sich hier durch Kontaktauflagen auf Silberbasis auf den Schaltkontakten erreichen, die jedoch häufig ein Schaltgerät erheblich verteuern.In such arrangements, the optimization to the different is critical Use cases. In addition to the functions, it must be switched on and off the function of isolating (off) and carrying current (on) is also reliably fulfilled become. This is especially true after various arcing stresses through switching operations. Quite good properties can be seen here Silver-based contact pads reach the switch contacts, however often considerably increase the cost of a switching device.

Eine Kontaktanordnung der eingangs genannten Art ist beispielsweise aus der EP 0 496 213 A1 bekannt. Dort wird ein stätionärer Kontakt beidseitig von in unterschiedlichen geradlinig, bewegbaren Stellteilen federgelagerten Kontakten beaufschlagt. Sowohl der Festkontakt als auch die beweglichen Kontakte sind plattenförmig ausgebildet. Derjenige Kontaktbereich, in dem das Schalten des Kontaktes erfolgt, stellt gleichzeitig nach dem Schalten den stromführenden Bereich dar. Diese Kontaktanordnung weist damit die vorbeschriebenen Nachteile auf.A contact arrangement of the type mentioned is, for example, from the EP 0 496 213 A1 is known. There is a steady contact on both sides of in different linear, movable actuators spring-loaded contacts applied. Both the fixed contact and the moving contacts are plate-shaped. The contact area in which the switching of the Contact takes place, simultaneously provides the current-carrying after switching Area represents. This contact arrangement thus has the previously described Disadvantages.

Eine Kontaktanordnung der eingangs genannten Art ist ferner aus der DE 30 10 579 A1 bekannt. Auch dort wirken auf abgewandten Seiten eines stationären Kontaktes bewegliche Kontakte mit diesem zusammen. Allerdings erfolgt die Kontaktierung nicht, indem die beweglichen Platten senkrecht zur Plattenebene in Richtung des stationären Kontaktes bewegt werden, sondern in der Plattenebene. Auch bei dieser Kontaktanordnung ist keine Trennung eines Schaltbereiches und eines stromführenden Bereiches der Kontakte gegeben.A contact arrangement of the type mentioned is also from DE 30 10 579 A1 known. Also there act on opposite sides of a stationary one Contact movable contacts with this together. However, the Do not make contact by moving the movable plates perpendicular to the plate plane be moved in the direction of the stationary contact, but in the plane of the plate. With this contact arrangement, too, there is no separation of a switching area and a current-carrying area of the contacts.

Eine Kontaktanordnung, bei der unterschiedliche Bereiche vorgesehen sind, denen eindeutig die Funktionen Schalten und Stromführen zugeordnet sind, ist aus der EP 0 890 969 A2 bekannt. Diese betrifft allerdings keine Kontaktanordnung unter Verwendung eines Stellteiles zur Aufnahme eines infolgedessen beweglichen Kontaktes zwecks Kontaktierung eines anderen, stationären Kontaktes, sondern einen Kontaktkörper zur Aufnahme eines Kontaktmessers eines Sicherungseinsatzes. Dieser Kontaktkörper weist einen beim Einsetzen des Sicherungseinsatzes in den Schlitz des Kontaktkörpers voreilenden Bereich auf, der die Funktion eines Schaltkontaktes besitzt, sowie einen diesem Bereich nacheilenden Bereich, der die Funktion eines Dauerkontaktes besitzt. Der Dauerkontakt erfolgt in stirnseitigen Bereichen des Kontaktkörperbleches.A contact arrangement in which different areas are provided which are clearly assigned the functions switching and current carrying known from EP 0 890 969 A2. However, this does not affect a contact arrangement using an actuator to accommodate a consequent movable contact for the purpose of contacting another, stationary contact, but a contact body for receiving a contact knife Fuse link. This contact body has one when inserting the Fuse insert in the slot of the contact body leading area, which has the function of a switch contact, as well as a this area lagging area, which has the function of a permanent contact. The permanent contact takes place in the front areas of the contact body plate.

Aufgabe der Erfindung ist es, eine Kontaktanordnung der eingangs genannten Art zu schaffen, die einfach herzustellende Elemente aufweist, wobei die unvermeidbare Lichtbogenerosion der Schaltvorgänge die Stromtragfähigkeit bzw. die Übergangswiderstände der geschlossenen Kontaktanordnung nicht negativ beeinträchtigt. Die Kontaktanordnung soll zudem, ohne spezielle Kontaktauflagen, eine hohe Zuverlässigkeit (niedrige Erwärmung) bei Stromführung bieten.The object of the invention is a contact arrangement of the aforementioned To create type that has easy to manufacture elements, the inevitable Arc erosion of the switching processes the current carrying capacity or the contact resistance of the closed contact arrangement is not negative impaired. The contact arrangement should also, without special contact requirements, offer high reliability (low heating) when carrying current.

Gelöst wird die Aufgabe bei einer Kontaktanordnung in der eingangs genannten Art dadurch, dass die Kontaktanordnung zwei Bereiche aufweist, denen eindeutig die Funktionen Schalten und Stromführen zugeordnet sind, wobei der Schaltbereich einer Stirnseite des einen Kontakts und einer Gegenfläche des anderen Kontakts zugeordnet ist, sowie der Stromführungsbereich keilförmig angeordneten Flächen des einen Kontakts und Gegenflächen des anderen Kontakts, die in entsprechender Keilform angeordnet sind, zugeordnet ist.The problem is solved with a contact arrangement in the aforementioned Kind in that the contact arrangement has two areas, the the switching and current carrying functions are clearly assigned, whereby the Switching area of an end face of a contact and a counter surface of the is assigned to other contact, and the current carrying area is wedge-shaped arranged surfaces of one contact and counter surfaces of the other Contact, which are arranged in a corresponding wedge shape, is assigned.

Bei der erfindungsgemäßen Kontaktanordnung wird die Schaltarbeit auf der Stirnseite des einen Kontaktes erbracht, während die Stromführung der geschlossenen Kontakte über die Kontaktflanken erfolgt, die keilförmig angeordnet sind. Die Keilform führt hier zu einer starken Krafterhöhung an der Kontaktfläche, bei relativ geringen Kräften für die Betätigung des Systems, konkret des Stellteils. Verschleißprobleme sind nicht zu erwarten, weil kaum eine Lichtbogenerosion an diesen Kontaktflächen auftritt. Es tritt somit nicht der Nachteil wie bei der parallelen Kontaktierung bei Sicherungsmessern auf; dort lassen starke Schwankungen im Reibbeiwert der Kontaktanordnung den Kraftbedarf einer Schaltmechanik nicht sicher kalkulieren.In the contact arrangement according to the invention, the switching work on the End face of a contact is provided while the current is flowing closed contacts via the contact flanks, which are wedge-shaped are arranged. The wedge shape leads to a strong increase in force on the Contact area, with relatively low forces for operating the system, specifically of the actuator. Wear problems are not expected because hardly any Arc erosion occurs at these contact surfaces. So it does not occur Disadvantage as with parallel contacting with safety knives; there leave strong fluctuations in the coefficient of friction of the contact arrangement the power requirement a switching mechanism does not calculate safely.

Die erfindungsgemäße Kontaktanordnung kann in unterschiedlichen Systemen verwirklicht werden. So besteht die Möglichkeit, die Kontaktanordnung als Brückenkontaktanordnung mit zwei formgleichen stationären Kontakten auszubilden. Es sind mehrpolige Kontaktanordnungen denkbar, wobei bei diesen die stationären Kontakte vorzugsweise in einem gemeinsamen Stellteil gelagert sind. Das Stellteil ist insbesondere geradlinig verstellbar und demzufolge als Schieber ausgebildet. Es ist genauso denkbar, das Stellteil drehbar zu lagern, womit das Schalten der Kontaktanordnung nicht durch eine geradlinige Bewegung, sondern eine Drehbewegung des Stellteils herbeigeführt wird.The contact arrangement according to the invention can be used in different systems be realized. So there is the possibility of the contact arrangement as Bridge contact arrangement with two identical stationary contacts train. Multi-pole contact arrangements are conceivable, with these the stationary contacts preferably in a common control part are stored. The actuator is particularly straight adjustable and consequently designed as a slide. It is also conceivable to turn the control part store, so that the switching of the contact arrangement is not by a straight line Movement, but a rotary movement of the actuator is brought about.

Gemäß einer bevorzugten Ausführungsform weist der bewegliche Kontakt einen trapezförmigen Querschnitt bzw. eine trapezförmige Außenkontur auf. Er stellt sich somit als Trapezkontakt dar. Vorteilhaft ist der Kontakt federnd im Stellteil gelagert. Über diese Feder wird dieser Kontakt gegen den anderen, stationären Kontakt zwecks Stromführung gedrückt. According to a preferred embodiment, the movable contact a trapezoidal cross-section or a trapezoidal outer contour. He thus presents itself as a trapezoidal contact. The contact is advantageously resilient in the Control part stored. Through this spring this contact is made against the other, stationary contact pressed for current supply.

Während der bewegliche Kontakt vorzugsweise als massiver Körper ausgebildet ist, wird es bezüglich des stationären Kontaktes als vorteilhaft angesehen, wenn er als Plattenkörper ausgebildet ist. Aufgrund dieser Gestaltung kann dieser Kontakt beliebig gebogen und gestanzt werden, insbesondere um seitliche Plattenbereiche und einen zentralen, aus der Plattenebene herausgebogenen Plattenbereich zu bilden. Die einander zugewandten Stirnflächen der seitlichen Plattenbereiche sind keilförmig zueinander angeordnet und bilden die stromführenden Gegenflächen dieses Kontakts, während der herausgebogene Plattenbereich in Art eines Lappens gestaltet ist, der die Schaltgegenfläche dieses Kontakts bildet.During the movable contact preferably formed as a solid body it is considered advantageous with regard to stationary contact if it is designed as a plate body. Because of this design, this can Contact can be bent and punched as desired, especially around the side Plate areas and a central, bent out of the plate level Form plate area. The facing end faces of the side Plate areas are arranged in a wedge shape and form the current-carrying areas Mating surfaces of this contact while the plate area is bent out is designed in the manner of a rag, which is the button counter surface of this Forms contact.

Der herausgebogene Lappen ist auf der dem Kontaktbereich abgewandten Seite vorzugsweise kraftbelastet, beispielsweise indem er in Art einer einseitig gelagerten Blattfeder an einem Gehäusevorsprung des Schaltgerätes anliegt und so die Nachgiebigkeit des Schaltlappens beim Einführen des beweglichen Kontaktes in dem Schaltbereich begrenzt. Das Schalten erfolgt somit unter einer Vorspannung, dass heißt ausreichend hoher Kontaktkraft zwischen dem Lappen des stationären Kontaktes und der Gegenfläche des beweglichen Kontaktes.The bent tab is on the side facing away from the contact area Side preferably loaded by force, for example by being one-sided supported leaf spring abuts a housing projection of the switching device and so the flexibility of the switch flap when inserting the movable Limited contact in the switching range. The switching takes place under a bias, that is, a sufficiently high contact force between the Rag of the stationary contact and the counter surface of the movable Contact.

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

In den Figuren ist die erfindungsgemäße Kontaktanordnung anhand eines bevorzugten Ausführungsbeispieles dargestellt, ohne hierauf beschränkt zu sein. Es stellt dar:

Figur 1
eine räumliche Ansicht eines elektrischen Schaltgerätes, dass die erfindungsgemäße Kontaktanordnung aufweist, veranschaulicht für den Schaltzustand "Aus",
Figur 2
einen vertikalen Schnitt durch das in Figur 1 gezeigte Schaltgerät (gemäß der Linie B-B in Figur 3),
Figur 3
einen horizontalen Schnitt durch das in Figur 1 gezeigte Schaltgerät (gemäß der Linie A-A in Figur 2),
Figuren 4 und 5
den Schnitten gemäß der Figuren 2 und 3 entsprechende Schnitte, dargestellt für den Schaltzustand "Einschalten",
Figuren 6 und 7
den Schnitten gemäß der Figuren 2 bis 5 entsprechende Schnitte, dargestellt für den Schaltzustand "Ein".
In the figures, the contact arrangement according to the invention is shown on the basis of a preferred exemplary embodiment, without being limited to this. It shows:
Figure 1
2 shows a spatial view of an electrical switching device that has the contact arrangement according to the invention, illustrated for the switching state “off”,
Figure 2
2 shows a vertical section through the switching device shown in FIG. 1 (according to line BB in FIG. 3),
Figure 3
2 shows a horizontal section through the switching device shown in FIG. 1 (according to line AA in FIG. 2),
Figures 4 and 5
cuts corresponding to the sections according to FIGS. 2 and 3, represented for the switching state "switching on",
Figures 6 and 7
cuts corresponding to the sections according to FIGS. 2 to 5, shown for the switching state "on".

Bei der nachfolgenden Beschreibung wird auf die Darstellung der Figuren 1 bis 3 Bezug genommen, die wesentliche Teile des Schaltgerätes 1 im Bereich eines Sicherungseinstzes 2 für den Schaltzustand "Aus" veranschaulichen. Im Gegensatz zu der Darstellung in den Figuren 2 und 3 ist aus Gründen der präziseren Darstellung der erfindungsrelevanten Bauteile in der Figur 1 das Gehäuse 3 des Schaltgerätes 1 nicht veranschaulicht.In the following description, the representation of FIGS 3 referred to the essential parts of the switching device 1 in the area of a fuse link 2 for the switching state "off". in the Contrary to the representation in Figures 2 and 3 is for reasons of 1 shows the more precise representation of the components relevant to the invention Housing 3 of the switching device 1 is not illustrated.

In dem Gehäuse 3, das aus diversen horizontalen und vertikal angeordneten Wandungsabschnitten gebildet ist, ist ein Schieber 4 horizontal verschiebbar gelagert. Dessen Längsachse ist mit der Bezugsziffer 5 bezeichnet. Der Schieber 4 ist im interessierenden Bereich des Schaltgerätes 1 mit zwei Durchgängen 6 versehen, die den Schieber 4 vertikal durchsetzen. Jeder Durchgang 6 bildet zwei Bereiche 7 und 8. Der Bereich 7 weist, vertikal gesehen, einen trapezförmigen Querschnitt auf, während der Bereich 8 einen rechteckigen Querschnitt besitzt. Im Verbindungsbereich der beiden Bereiche 7 und 8 ist die Schmalseite des rechteckförmigen Bereiches 8 angeordnet, die kürzer ist als die längere Seite der beiden parallelen Seiten des trapezförmigen Bereiches 7. Im jeweiligen Durchgang 6 ist ein Kontakt 9 gelagert. Er durchsetzt den Bereich 7 des Durchganges 6 und weist einen der Trapezform des Bereiches 7 angepassten trapezförmigen Querschnitt auf. Der jeweilige Durchgang 6 nimmt ferner eine Schraubenfeder 10 auf, die im Wesentlichen im Bereich angeordnet ist und sich an der großen parallelen Fläche 11 des trapezförmigen Kontaktes 9 abstützt. Der Kontakt 9 wird infolgedessen im Bereich seiner keilförmig angeordneten Flächen 12 gegen die entsprechend keilförmig angeordneten Gegenflächen des Schiebers 4 und/oder die federabgewandte Fläche des Kontaktes vorgespannt.In the housing 3, which consists of various horizontal and vertical Wall sections is formed, a slide 4 is horizontally displaceable stored. Its longitudinal axis is designated by reference number 5. The slider 4 is in the area of interest of the switching device 1 with two passes 6 provided that push the slider 4 vertically. Every run 6 forms two areas 7 and 8. The area 7, viewed vertically, has one trapezoidal cross-section, while the area 8 a rectangular Cross section. In the connection area of the two areas 7 and 8 is the Narrow side of the rectangular region 8 is arranged, which is shorter than the longer side of the two parallel sides of the trapezoidal region 7. A contact 9 is mounted in the respective passage 6. It penetrates the area 7 of the passage 6 and has one of the trapezoidal shape of the area 7 adapted trapezoidal cross-section. The respective passage 6 takes also a coil spring 10, which is arranged substantially in the area and on the large parallel surface 11 of the trapezoidal contact 9 supported. As a result, the contact 9 becomes wedge-shaped in the area of it arranged surfaces 12 against the corresponding wedge-shaped Counter surfaces of the slide 4 and / or the spring-facing surface of the contact biased.

Der jeweilige Kontakt 9 weist eine solche Länge auf, dass er beidendig über die obere Fläche 13 und untere Fläche 14 des Schiebers hinaussteht. Der Überstand ist gleich und so bemessen, dass im Bereich des Überstandes eine ausreichende Fläche zur Kontaktierung der zugeordneten stationären Kontakte 15 verbleibt. Der Kontaktkörper 9 bildet aufgrund dieser Gestaltung im Bereich der aus dem Schieber 4 herausragenden Bereiche zwei Kontakte 16, die mit den Kontakten 15 in Wirkverbindung bringbar sind.The respective contact 9 has such a length that it extends over both ends of the protrudes upper surface 13 and lower surface 14 of the slide. The supernatant is the same and dimensioned so that in the area of the supernatant is sufficient Area for contacting the assigned stationary contacts 15 remains. The contact body 9 forms due to this design in the area of from the slider 4 projecting areas two contacts 16, which with the Contacts 15 can be brought into operative connection.

Der Kontaktkörper 17, der den jeweiligen stationären Kontakt 15 beinhaltet, ist als Platte ausgebildet, die im Gehäuse 3 gelagert ist. Der Kontaktkörper 17 nimmt, im Fall des Ausführungsbeispieles, im Bereich eines Endes ein Kontaktelement 18 auf, in das das Kontaktmesser 19 des Sicherungseinsatzes 2 (NH-Sicherungseinsatz) einsteckbar ist. Innerhalb des Gehäuses 3, in seinem der Sicherung abgewandten Bereich, ist der plattenförmige Kontaktkörper 17 um 90° abgewinkelt, und der abgewinkelte Endabschnitt 20 in unmittelbarer Nähe zum Schieber 4 im Wesentlichen parallel zu diesem positioniert. Der abgewinkelte Endabschnitt 20 weist seitliche Plattenbereiche 21 und einen zentralen, aus der Plattenebene herausgebogenen Plattenbereich 22 auf. Die einander zugewandten vertikalen Stirnflächen 23 der seitlichen Plattenbereiche 21 sind keilförmig zueinander angeordnet, entsprechend der Keilform des Kontaktkörpers 7. Der zentrale, herausgebogene Plattenbereich 22 ist lappenförmig ausgebildet und stellt sich in Art einer einseitig gelagerten Blattfeder dar, die mit ihrem freien, in Richtung des Schiebers 4 gebogenen Bereich in den Weg des Kontaktes 16 ragt, konkret dessen obere bzw. untere Stirnfläche 25. The contact body 17, which contains the respective stationary contact 15, is formed as a plate which is mounted in the housing 3. The contact body 17 takes, in the case of the embodiment, a contact element in the region of one end 18 into which the contact blade 19 of the fuse link 2 (NH fuse link) is insertable. Inside the housing 3, in its the Fuse-facing area, the plate-shaped contact body 17 is around Angled 90 °, and the angled end portion 20 in the immediate vicinity positioned to the slide 4 substantially parallel to this. The angled one End section 20 has lateral plate regions 21 and a central, plate area 22 bent out of the plate plane. The mutually facing vertical end faces 23 of the side plate areas 21 are arranged in a wedge shape relative to one another, corresponding to the wedge shape of the contact body 7. The central, bent plate area 22 is lobed trained and is in the manner of a single-sided leaf spring, the with their free, in the direction of the slider 4 area in the path of Contact 16 protrudes, specifically its upper or lower end face 25.

In der gezeigten Ausführungsform ist die Kontaktanordnung als Brückenkontaktanordnung mit dem Kontaktkörper 9 ausgebildet. Durch die Lagerung mehrerer Kontakte 9 im Schieberbereich ist ein mehrpoliges Einschalten möglich, wie es zum Einsatzfall des Schaltgerätes mit Sicherungseinsatz 2 für einen Pol veranschaulicht ist.In the embodiment shown, the contact arrangement is in the form of a bridge contact arrangement formed with the contact body 9. By storing several Contacts 9 in the slide range, multi-pole switching is possible, as it is illustrates the application of the switching device with fuse link 2 for one pole is.

Die Figuren 1 bis 3 zeigen den Schaltzustand "Aus". Der Schieber 4 befindet sich in seiner relativ rechten Position, in der der jeweilige bewegliche Kontakt 16 außer Eingriff mit dem zugeordneten stationären Kontakt 15 ist.Figures 1 to 3 show the switching state "off". The slide 4 is located itself in its relatively right position, in which the respective moving contact 16 is disengaged from the associated stationary contact 15.

Beim Bewegen des Schiebers 4 im Sinne der Darstellung der Figuren 4 und 5 nach links wird, der in diesen Figuren gezeigte Schaltzustand "Einschalten" erreicht. Hierbei kontaktiert der jeweilige Kontakt 16 mit seiner Trapezform aufweisenden Stirnfläche 25 den stationären Kontakt 15 ausschließlich in seinem Bereich 24. Da dieser Bereich 24 in den Weg des Kontaktes 16 ragt, wird er bei Einwirkung des Kontaktes 16 federnd leicht nach oben gebogen, wobei der zentrale Plattenbereich 22 dieses Kontakts 15 sich an einen Gehäusevorsprung 26 anlegt, der diesen Plattenbereich 22 abstützt. In dieser Stellung des Schiebers 4 ist eindeutig die Funktion schalten der Kontaktanordnung zugeordnet.When moving the slide 4 in the sense of the illustration in FIGS. 4 and 5 to the left, the switching state "switch on" shown in these figures reached. Here, the respective contact 16 contacts with its trapezoidal shape Face 25 the stationary contact 15 exclusively in his Area 24. Since this area 24 protrudes into the path of the contact 16, it becomes at Action of the contact 16 resiliently bent slightly upwards, the central one Plate region 22 of this contact 15 is in contact with a housing projection 26 creates that supports this plate area 22. In this position of the slide 4 the function switch of the contact arrangement is clearly assigned.

Wird der Schieber 4, wie in den Figuren 6 und 7 veranschaulicht, weiter nach hinten bewegt, kontaktiert der Kontakt 16 weiterhin den zentralen Plattenbereich 22, gelangt aber zusätzlich mit seinen beiden keilförmigen Flächen 12 in Anlage mit den entsprechend in Keilform angeordneten Stirnflächen 23 der seitlichen Plattenbereiche 21. Der Kontaktkörper 9 liegt im Bereich des jeweiligen Kontaktes 16 über die gesamte Länge der Stirnflächen 23 der seitlichen Plattenbereiche 21 an diesen an. Die Feder 10 drückt hierbei den Kontaktkörper 9 zwischen die seitlichen Plattenbereiche 21 der beiden zugeordneten Kontakte 15. Den keilförmigen Bereichen der Kontaktanordnung ist demzufolge eindeutig die Funktion Stromführen zugeordnet. The slide 4, as illustrated in FIGS. 6 and 7, continues to follow Moving to the rear, the contact 16 continues to contact the central plate area 22, but also arrives with its two wedge-shaped surfaces 12 in contact with the correspondingly arranged in wedge end faces 23 of the lateral plate areas 21. The contact body 9 lies in the area of the respective Contact 16 over the entire length of the end faces 23 of the side Plate areas 21 on this. The spring 10 presses the contact body 9 between the side plate regions 21 of the two associated contacts 15. The wedge-shaped areas of the contact arrangement are therefore clear assigned the current carrying function.

Beim Überführen der Kontaktanordnung in den Schaltzustand "Aus", indem der Schieber 4 wieder nach rechts bewegt wird, wird zunächst die Stromführung über die Keilflächen aufgehoben und der Zustand gemäß der Figuren 4 und 5 erreicht. Beim weiteren Bewegen des Schiebers 4 nach rechts wird auch der Kontakt zwischen dem Kontaktkörper 9 und den zentralen Plattenbereichen 22 der beiden zugeordneten 15 aufgehoben, womit das Gerät ausschaltet.When transferring the contact arrangement into the switching state "off" by the Slide 4 is moved to the right again, the current is first over the wedge surfaces and the state according to Figures 4 and 5 reached. When the slider 4 is moved further to the right, the Contact between the contact body 9 and the central plate regions 22 of the two assigned 15 canceled, which turns off the device.

Claims (12)

Kontaktanordnung für ein elektrisches Schaltgerät (1), insbesondere einen Niederspannungs-Lastschalter, mit einem Stellteil (4) zur Aufnahme eines Kontaktes (16) und einem diesem Kontakt (16) zugeordneten anderen, stationären Kontakt (15), dadurch gekennzeichnet, dass die Kontaktanordnung (13, 15, 16) zwei Bereiche aufweist, denen eindeutig die Funktionen Schalten und Stromführen zugeordnet sind, wobei der Schaltbereich einer Stirnseite (25) des einen Kontakts (16) und einer Gegenfläche (22) des anderen Kontakts (15) zugeordnet ist, sowie der Stromführungsbereich keilförmig angeordneten Flächen (12) des einen Kontaktes (16) und Gegenflächen (23) des anderen Kontaktes (15), die in entsprechender Keilform angeordnet sind, zugeordnet ist.Contact arrangement for an electrical switching device (1), in particular a low-voltage load switch, with an actuating part (4) for receiving a contact (16) and another stationary contact (15) assigned to this contact (16), characterized in that the contact arrangement (13, 15, 16) has two areas to which the switching and current carrying functions are clearly assigned, the switching area being assigned to an end face (25) of one contact (16) and a counter surface (22) of the other contact (15), and the current guiding area is assigned wedge-shaped surfaces (12) of one contact (16) and counter surfaces (23) of the other contact (15), which are arranged in a corresponding wedge shape. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass sie als Brückenkontaktanordnung (4, 15, 15, 16, 16) mit zwei formgleichen stationären Kontakten (16, 16) ausgebildet ist.Arrangement according to claim 1, characterized in that it is designed as a bridge contact arrangement (4, 15, 15, 16, 16) with two identical stationary contacts (16, 16). Anordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie mehrpolig ist und die stationären Kontakte (16, 16; 16, 16) in einem gemeinsamen Stellteil (4) gelagert sind.Arrangement according to claim 1 or 2, characterized in that it has multiple poles and the stationary contacts (16, 16; 16, 16) are mounted in a common adjusting part (4). Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Stellteil (4) als geradlinig verstellbarer Schieber ausgebildet ist.Arrangement according to one of claims 1 to 3, characterized in that the adjusting part (4) is designed as a rectilinearly adjustable slide. Anordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der eine Kontakt (16) als massiver Körper (9) ausgebildet ist.Arrangement according to one of claims 1 to 4, characterized in that the one contact (16) is designed as a solid body (9). Anordnung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der eine Kontakt (16) einen trapezförmigen Querschnitt bzw. eine trapezförmige Außenkontur aufweist, wobei die Stirnseite (25) dieses Kontakts (16) parallel zur Querschnittsebene positioniert ist und die keilförmig angeordneten Flächen (12) dieses Kontaktes (16) durch die keilförmig angeordneten Begrenzungen dieser Querschnittfläche verlaufen.Arrangement according to one of claims 1 to 5, characterized in that the one contact (16) has a trapezoidal cross section or a trapezoidal outer contour, the end face (25) of this contact (16) being positioned parallel to the cross-sectional plane and the wedge-shaped surfaces (12) of this contact (16) run through the wedge-shaped boundaries of this cross-sectional area. Anordnung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der eine Kontakt (16) federnd im Stellteil (4) gelagert ist.Arrangement according to one of claims 1 to 6, characterized in that the one contact (16) is resiliently mounted in the adjusting part (4). Anordnung nach Anspruch 7, dadurch gekennzeichnet, dass die Feder (10) den Kontakt (16), bei sich nicht kontaktierenden Kontakten (15, 16), in Richtung des anderen Kontaktes (15) gegen dass Stellteil (4) vorspannt.Arrangement according to claim 7, characterized in that the spring (10) biases the contact (16), in the case of non-contacting contacts (15, 16), in the direction of the other contact (15) against the actuating part (4). Anordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der andere Kontakt (15) plattenförmig ausgebildet ist.Arrangement according to one of claims 1 to 8, characterized in that the other contact (15) is plate-shaped. Anordnung nach Anspruch 9, dadurch gekennzeichnet, dass der andere Kontakt (15) seitliche Plattenbereiche (21, 21) und einen zentralen, aus der Plattenebene herausgebogenen Plattenbereich (22) aufweist, wobei die einander zugewandten Stirnflächen (23, 23) der seitlichen Plattenbereiche (21, 21) keilförmig zueinander angeordnet sind und die stromführenden Gegenflächen dieses Kontaktes (15) bilden.Arrangement according to Claim 9, characterized in that the other contact (15) has lateral plate regions (21, 21) and a central plate region (22) which is bent out of the plane of the plate, the mutually facing end faces (23, 23) of the lateral plate regions ( 21, 21) are arranged in a wedge shape relative to one another and form the current-carrying counter surfaces of this contact (15). Anordnung nach Anspruch 10, dadurch gekennzeichnet, dass der herausgebogene Plattenbereich (22) in Art eines Lappens gebildet ist, wobei ein der Aussparung (27) zwischen den seitlichen Plattenbereichen (21, 21) zugewandter Bereich (24) des Lappens die Schaltgegenfläche dieses Kontaktes (15) bildet.Arrangement according to claim 10, characterized in that the bent-out plate region (22) is formed in the manner of a flap, a region (24) of the flap facing the recess (27) between the side plate regions (21, 21) being the contact surface of this contact ( 15) forms. Anordnung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der herausgebogene Plattenbereich (22) des anderen Kontakts (15) in Art einer einseitig gelagerten Blattfeder konzipiert ist, insbesondere einer im Federweg durch einen stationären Anschlag (26) beschränkten Feder konzipiert ist.Arrangement according to one of claims 1 to 11, characterized in that the bent-out plate region (22) of the other contact (15) is designed in the manner of a leaf spring mounted on one side, in particular a spring limited in spring travel by a stationary stop (26).
EP03000985A 2002-02-16 2003-01-17 Contact arrangement for switching device Expired - Lifetime EP1439558B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10206509 2002-02-16
DE10206509A DE10206509A1 (en) 2002-02-16 2002-02-16 High integrity contact assembly for low voltage, power circuit breaker, has separate contacting surfaces associated with switching and current-carrying

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EP1439558A1 true EP1439558A1 (en) 2004-07-21
EP1439558B1 EP1439558B1 (en) 2005-12-07

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EP03000985A Expired - Lifetime EP1439558B1 (en) 2002-02-16 2003-01-17 Contact arrangement for switching device

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AT (1) ATE312408T1 (en)
DE (2) DE10206509A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012012813U1 (en) * 2012-07-11 2013-12-04 Tyco Electronics Amp Gmbh switching device
CN107533926B (en) 2015-04-24 2019-03-29 Abb瑞士股份有限公司 By-pass switch provides the method and power system of conductive path
ES2716168T3 (en) * 2016-02-29 2019-06-10 Woehner Gmbh & Co Kg Elektrotechnische Systeme Switching contact arrangement

Citations (5)

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Publication number Priority date Publication date Assignee Title
GB224047A (en) * 1923-09-20 1924-11-06 Claude William Denny Improvements in or relating to electric switches
GB227749A (en) * 1923-09-14 1925-01-14 Richard Scheibe Improvements in methods of and means for securing railway rails to sleepers
GB468987A (en) * 1936-05-04 1937-07-16 Gen Electric Co Ltd Improvements in or relating to contacts for electric switches
GB553638A (en) * 1941-11-27 1943-05-31 Brookhirst Switchgear Ltd Improvements in or relating to electric switches and switchgear having auxiliary sparking contacts
GB622381A (en) * 1946-04-01 1949-05-02 Bendix Aviat Corp Improvements in or relating to electric circuit-breakers having arc-extinguishing means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB227749A (en) * 1923-09-14 1925-01-14 Richard Scheibe Improvements in methods of and means for securing railway rails to sleepers
GB224047A (en) * 1923-09-20 1924-11-06 Claude William Denny Improvements in or relating to electric switches
GB468987A (en) * 1936-05-04 1937-07-16 Gen Electric Co Ltd Improvements in or relating to contacts for electric switches
GB553638A (en) * 1941-11-27 1943-05-31 Brookhirst Switchgear Ltd Improvements in or relating to electric switches and switchgear having auxiliary sparking contacts
GB622381A (en) * 1946-04-01 1949-05-02 Bendix Aviat Corp Improvements in or relating to electric circuit-breakers having arc-extinguishing means

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ATE312408T1 (en) 2005-12-15
DE50301847D1 (en) 2006-01-12
DE10206509A1 (en) 2003-08-28
EP1439558B1 (en) 2005-12-07

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