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EP0304539A1 - Switching bridge for electrical switching devices, particularly for contactors - Google Patents

Switching bridge for electrical switching devices, particularly for contactors Download PDF

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Publication number
EP0304539A1
EP0304539A1 EP88104209A EP88104209A EP0304539A1 EP 0304539 A1 EP0304539 A1 EP 0304539A1 EP 88104209 A EP88104209 A EP 88104209A EP 88104209 A EP88104209 A EP 88104209A EP 0304539 A1 EP0304539 A1 EP 0304539A1
Authority
EP
European Patent Office
Prior art keywords
contact
bridge
switching
spring
bridges
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
EP88104209A
Other languages
German (de)
French (fr)
Other versions
EP0304539B1 (en
Inventor
Helmut Lemmer
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.)
Square D Co Deutschland GmbH
Original Assignee
Square D Co Deutschland GmbH
Square D Starkstrom 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8191854&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0304539(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Square D Co Deutschland GmbH, Square D Starkstrom GmbH filed Critical Square D Co Deutschland GmbH
Priority to AT88104209T priority Critical patent/ATE85455T1/en
Publication of EP0304539A1 publication Critical patent/EP0304539A1/en
Application granted granted Critical
Publication of EP0304539B1 publication Critical patent/EP0304539B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2025—Bridging contacts comprising two-parallel bridges

Definitions

  • the invention relates to a switching bridge for electrical switching devices, in particular for contactors, with a number of contact bridges which are arranged next to and / or one above the other in windows and which carry contact pieces at their ends and which are each under the pressure of a contact spring.
  • Switching bridges of the aforementioned type are known in a wide variety of embodiments, for example from DE-A-1 909 460. What these switching bridges have in common, however, is that all the contact springs are designed as spiral springs and are inserted into the respective windows in such a way that they are either on the one hand Support the top or bottom wall of the window and on the other hand on the relevant contact bridge.
  • This construction has the disadvantage that only manual manufacture of the switching bridge is possible, that is to say that each contact bridge with the associated spiral-shaped contact spring must be inserted into the relevant window by hand.
  • Another disadvantage is that the spiral spring only presses in the middle on the contact bridge in question and cannot cause the contact bridge to be held.
  • each contact back seen in its longitudinal direction, must be provided with projections or other guide pieces on both sides, which usually grip around the edges of the window and in this way keep the contact bridge immovable in its longitudinal direction.
  • projections or other guide pieces on both sides, which usually grip around the edges of the window and in this way keep the contact bridge immovable in its longitudinal direction.
  • the invention has for its object to provide a switching bridge, which allows automatic production, that is, equipping with contact bridges, and in which abrasion is practically avoided, so that a high level of contact reliability is ensured.
  • each contact bridge is bent through 90 ° upwards and in that central projections are provided on the upper end faces of these ends, which engage in correspondingly shaped holes near the ends of the contact spring designed as a leaf spring.
  • An advantageous embodiment of the invention is achieved in that semicircular recesses are provided in the central region of the two longitudinal edges of the contact spring are in which appropriately shaped projections engage in the window.
  • each contact bridge can be grasped mechanically together with the leaf spring lying thereon. With a slight compression of the leaf spring, it can then be easily pushed into the window with the contact bridge, without tilting or the like being necessary. When the leaf spring is released, the projections engage in the semicircular recesses of the contact spring, so that the contact spring and the contact bridge are held securely at the same time.
  • Figures 1 and 2 show a partial section of a switching bridge 1 with a transverse window 2.
  • the switching bridge can have any number of windows one above the other and / or next to each other, so that the construction described below is repeated accordingly often for each window.
  • recesses 3 and 4 are provided on both sides of the window, so that the actual window 2 is incorporated in the web 5.
  • the illustrated embodiment of the switching bridge is particularly characterized by the secure mounting of the Contact bridge 55 off.
  • the ends 56 and 57 of the contact bridge 55 are bent upward by approximately 90 °.
  • Central projections 58 and 59 are provided on the upper end faces of these ends, which engage in correspondingly shaped holes 80 which engage near the ends of a contact spring 62.
  • the contact spring 62 is designed as a leaf spring bent convexly with respect to the associated contact bridge 55 located underneath.
  • Contact pieces 60 and 61 are attached to the underside of the contact bridge 55.
  • semicircular recesses 63 and 64 are provided, into which correspondingly shaped and arranged projections 65 and 66 projecting into the window 2 engage.
  • an automatic assembly is possible by simply inserting the contact bridge with the contact spring.

Landscapes

  • Push-Button Switches (AREA)
  • Tumbler Switches (AREA)
  • Contacts (AREA)

Abstract

Schaltbrücken für elektrische Schaltgeräte, insbesondere für Schütze, sind mit einer Anzahl neben- und/oder übereinander in Fenstern (2) beweglich angeordneten Kontaktbrücken (55) ausgerüstet, welche an ihren Enden Kontaktstücke (60, 61) tragen und welche unter dem Druck je einer Kontaktfeder (62) stehen. Um eine automatische Fertigung und Bestückung der Schaltbrücke mit Kontaktbrücken zu ermöglichen, und einen Abrieb zu vermeiden und damit eine hohe Kontaktsicherheit zu gewährleisten, wird vorgeschlagen, die Enden (56, 57) jeder Kontaktbrücke (55) um 90° nach oben umzubiegen und an den oberen Stirnseiten dieser Enden mittiger Vorsprünge (58, 59) vorzusehen, welche in entsprechend geformte Löcher nahe der Enden der als Blattfeder ausgebildeten Kontaktfeder (62) eingreifen.Switching bridges for electrical switching devices, in particular for contactors, are equipped with a number of contact bridges (55) which are arranged next to and / or one above the other in windows (2) and which have contact pieces (60, 61) at their ends and one under the pressure Contact spring (62) are standing. In order to enable automatic manufacture and equipping of the switching bridge with contact bridges, and to avoid abrasion and thus ensure high contact reliability, it is proposed to bend the ends (56, 57) of each contact bridge (55) upwards by 90 ° and to the Provide upper end faces of these ends of central projections (58, 59) which engage in correspondingly shaped holes near the ends of the contact spring (62) designed as a leaf spring.

Description

Die Erfindung bezieht sich auf eine Schaltbrücke für elektrische Schaltgeräte, insbesondere für Schütze, mit einer Anzahl neben- und/oder übereinander in Fenstern beweglich angeordneten Kontaktbrücken, welche an ihren Enden Kontaktstücke tragen und welche unter dem Druck je einer Kontaktfeder stehen.The invention relates to a switching bridge for electrical switching devices, in particular for contactors, with a number of contact bridges which are arranged next to and / or one above the other in windows and which carry contact pieces at their ends and which are each under the pressure of a contact spring.

Schaltbrücken der vorbezeichneten Gattung sind in den verschiedensten Ausführungsformen bekannt, beispielsweise aus der DE-A-1 909 460. Gemeinsam ist diesen Schaltbrücken aber, daß sämtliche Kontaktfedern als Spiralfedern ausgebildet und derart in die jeweiligen Fenster eingesetzt sind, daß sie sich einerseits entweder an der oberen oder unteren Wand des Fensters und andererseits an der betreffenden Kontaktbrücke abstützen. Diese Konstruktion bringt den Nachteil mit sich, daß nur eine manuelle Fertigung der Schaltbrücke möglich ist, das heißt, daß jede Kontaktbrücke mit der dazugehörigen spiralförmigen Kontaktfeder von Hand in das betreffende Fenster eingesetzt werden muß. Ein weiterer Nachteil besteht darin, daß die Spiralfeder nur in der Mitte auf die betreffende Kontaktbrücke drückt und keine Halterung der Kontaktbrücke bewirken kann. Daher muß jede Kontaktrücke in ihrer Längsrichtung gesehen mit beiderseitigen Vorsprüngen oder sonstigen Führungsstücken versehen werden, die meist um die Ränder des Fensters greifen und die Kontaktbrücke auf diese Weise in ihrer Längsrichtung unverschieblich halten. Bei der sehr großen Zahl von Schaltbewegungen, die jede Kontaktbrücke in dem Fenster ausführen muß, ergibt sich ein außerordentlich großer Abrieb sowohl des meist aus Kunststoff bestehenden Materials der Schaltbrücke im Bereich der Fenster als auch an den Kontaktbrücken selbst.Switching bridges of the aforementioned type are known in a wide variety of embodiments, for example from DE-A-1 909 460. What these switching bridges have in common, however, is that all the contact springs are designed as spiral springs and are inserted into the respective windows in such a way that they are either on the one hand Support the top or bottom wall of the window and on the other hand on the relevant contact bridge. This construction has the disadvantage that only manual manufacture of the switching bridge is possible, that is to say that each contact bridge with the associated spiral-shaped contact spring must be inserted into the relevant window by hand. Another disadvantage is that the spiral spring only presses in the middle on the contact bridge in question and cannot cause the contact bridge to be held. Therefore, each contact back, seen in its longitudinal direction, must be provided with projections or other guide pieces on both sides, which usually grip around the edges of the window and in this way keep the contact bridge immovable in its longitudinal direction. With the very large number of switching movements that each contact bridge must carry out in the window, there is an extraordinarily great abrasion both of the mostly plastic material of the switching bridge in the area of the windows and on the contact bridges themselves.

Dieser Abrieb kommt zumindest teilweise auf die Kontaktstücke, die dadurch verschmutzt werden. Dadurch wird die Kontaktsicherheit im Laufe der Betriebszeit sehr beeinträchtigt.This abrasion comes at least partially on the contact pieces, which are contaminated as a result. As a result, the reliability of contact is very impaired in the course of the operating time.

Aus der DE-C-1 071 198 ist auch bereits ein elektrisches Schaltgerät mit einer Schaltbrücke bekannt, bei welchem die Kontaktfeder als konvex gebogene Blattfeder ausgebildet ist, die mit ihren Enden auf die Kontaktbrücke drückt. Die Kontaktbrücke und die Kontaktfeder sind in einem Fenster eines Stößelkopfes mittels eines querverlaufenden bolzenartigen Verschlußstückes gehalten. An dem Stirnende des Kopfes ist ein Zylinderstück mit einem Bajonettverschluß angebracht. Nach dem Einsetzen der Kontaktbrücke und der Kontaktfeder müssen das Verschlußstück und das Zylinderstück nacheinander befestigt werden. Eine automatische Bestückung ist praktisch nicht durchführbar.From DE-C-1 071 198 an electrical switching device with a switching bridge is already known, in which the contact spring is designed as a convexly curved leaf spring, which presses with its ends onto the contact bridge. The contact bridge and the contact spring are held in a window of a plunger head by means of a transverse bolt-like closure piece. At the front of the head is a cylinder piece with a bayonet lock. After inserting the contact bridge and the contact spring, the locking piece and the cylinder piece must be fastened one after the other. An automatic assembly is practically not feasible.

Der Erfindung liegt die Aufgabe zugrunde, eine Schaltbrücke zu schaffen, welche einmal eine automatische Fertigung, das heißt Bestückung mit Kontaktbrücken gestattet und bei welcher der Abrieb praktisch vermieden wird, so daß dadurch eine hohe Kontaktsicherheit gewährleistet ist.The invention has for its object to provide a switching bridge, which allows automatic production, that is, equipping with contact bridges, and in which abrasion is practically avoided, so that a high level of contact reliability is ensured.

Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Enden jeder Kontaktbrücke um 90° nach oben umgebogen sind, und daß an den oberen Stirnseiten dieser Enden mittige Vorsprünge vorgesehen sind, welche in entsprechend geformte Löcher nahe der Enden der als Blattfeder ausgebildeten Kontaktfeder eingreifen.The object is achieved according to the invention in that the ends of each contact bridge are bent through 90 ° upwards and in that central projections are provided on the upper end faces of these ends, which engage in correspondingly shaped holes near the ends of the contact spring designed as a leaf spring.

Eine vorteilhafte Ausgestaltung der Erfindung wird dadurch erzielt, daß im mittleren Bereich der beiden Längsränder der Kontaktfeder halbkreisförmige Aussparungen vorgesehen sind, in welche entsprechend geformte, in das Fenster ragende Vorsprünge eingreifen.An advantageous embodiment of the invention is achieved in that semicircular recesses are provided in the central region of the two longitudinal edges of the contact spring are in which appropriately shaped projections engage in the window.

Es hat sich überraschenderweise in der Praxis erwiesen, daß durch die erfindungsgemäße Ausbildung der Schaltbrücke auch nach längerer Betriebszeit praktisch kein Abrieb auftritt. Die maschinelle Fertigung ist deshalb einfach durchzuführen, weil jede Kontaktbrücke zusammen mit der aufliegenden Blattfeder maschinell gefaßt werden kann. Unter leichtem Zusammendrücken der Blattfeder kann diese dann mit der Kontaktbrücke in das Fenster leicht eingeschoben werden, ohne daß ein Verkanten od. dgl. erforderlich ist. Wenn nun die Blattfeder losgelassen wird, greifen die Vorsprünge in die halbkreisförmigen Aussparungen der Kontaktfeder, so daß die Kontaktfeder und die Kontaktbrücke gleichzeitig sicher gehalten sind.Surprisingly, it has been found in practice that due to the inventive design of the switching bridge, practically no abrasion occurs even after a long period of operation. The mechanical production is easy to carry out because each contact bridge can be grasped mechanically together with the leaf spring lying thereon. With a slight compression of the leaf spring, it can then be easily pushed into the window with the contact bridge, without tilting or the like being necessary. When the leaf spring is released, the projections engage in the semicircular recesses of the contact spring, so that the contact spring and the contact bridge are held securely at the same time.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung im Schema dargestellt, und zwar zeigen

  • Figur 1 einen Teilvertikalschnitt durch eine Schaltbrücke mit betriebsfertig eingesetzter Kontaktbrücke und Kontaktfeder und
  • Figur 2 einen Horizontalschnitt gemäß Schnittlinie II-II in Figur 1.
In the drawing, an embodiment of the invention is shown in the diagram, namely show
  • 1 shows a partial vertical section through a switching bridge with the contact bridge and contact spring inserted and ready for operation
  • FIG. 2 shows a horizontal section along section line II-II in FIG. 1.

Die Figuren 1 und 2 zeigen einen Teilausschnitt aus einer Schaltbrücke 1 mit einem querverlaufenden Fenster 2. Die Schaltbrücke kann beliebig viele Fenster übereinander und/oder nebeneinander aufweisen, so daß sich je Fenster die nachfolgend erläuterte Konstruktion entsprechend oft wiederholt. In der Schaltbrücke 1 sind zu beiden Seiten des Fensters Ausnehmungen 3 und 4 vorgesehen, so daß das eigentliche Fenster 2 in dem Steg 5 eingearbeitet ist.Figures 1 and 2 show a partial section of a switching bridge 1 with a transverse window 2. The switching bridge can have any number of windows one above the other and / or next to each other, so that the construction described below is repeated accordingly often for each window. In the switching bridge 1 recesses 3 and 4 are provided on both sides of the window, so that the actual window 2 is incorporated in the web 5.

Das dargestellte Ausführungsbeispiel der Schaltbrücke zeichnet sich besonders durch die sichere Halterung der Kontaktbrücke 55 aus. Die Enden 56 und 57 der Kontaktbrücke 55 sind um etwa 90° nach oben hin umgebogen. An den oberen Stirnseiten dieser Enden sind mittige Vorsprünge 58 und 59 vorgesehen, welche in entsprechend geformte Löcher 80 eingreifen, die nahe den Enden einer Kontaktfeder 62 eingreifen. Wie Figur 1 verdeutlicht, ist die Kontaktfeder 62 als konvex zu der zugehörigen darunter befindlichen Kontaktbrücke 55 gebogene Blattfeder ausgebildet. Auf der Unterseite der Kontaktbrücke 55 sind Kontaktstücke 60 und 61 angebracht. Im mittleren Bereich der beiden Längsränder der Kontaktfeder 62 sind halbkreisförmige Aussparungen 63 und 64 vorgesehen, in welche entsprechend geformte und angeordnete, in das Fenster 2 ragende Vorsprünge 65 und 66 eingreifen. Bei diesem Ausführungsbeispiel ist eine automatische Bestückung durch einfaches Einschieben der Kontaktbrücke mit der Kontaktfeder möglich.The illustrated embodiment of the switching bridge is particularly characterized by the secure mounting of the Contact bridge 55 off. The ends 56 and 57 of the contact bridge 55 are bent upward by approximately 90 °. Central projections 58 and 59 are provided on the upper end faces of these ends, which engage in correspondingly shaped holes 80 which engage near the ends of a contact spring 62. As illustrated in FIG. 1, the contact spring 62 is designed as a leaf spring bent convexly with respect to the associated contact bridge 55 located underneath. Contact pieces 60 and 61 are attached to the underside of the contact bridge 55. In the central region of the two longitudinal edges of the contact spring 62, semicircular recesses 63 and 64 are provided, into which correspondingly shaped and arranged projections 65 and 66 projecting into the window 2 engage. In this embodiment, an automatic assembly is possible by simply inserting the contact bridge with the contact spring.

Es sei noch bemerkt, daß das dargestellte Ausführungsbeispiel der Deutlichkeit halber sehr stark vergrößert gezeichnet ist und zwar in einem Maßstab 10:1.It should also be noted that, for the sake of clarity, the exemplary embodiment shown is drawn in a greatly enlarged manner, specifically on a 10: 1 scale.

Claims (2)

1. Schaltbrücke fur elektrische Schaltgeräte, insbesondere für Schütze, mit einer Anzahl neben- ­und/oder übereinander in Fenstern (2) beweglich angeordneten Kontaktbrücken (55), welche an ihren Enden Kontaktstücke (60, 61) tragen und welche unter dem Druck je einer Kontaktfeder (62) stehen, dadurch gekennzeichnet, daß die Enden (56, 57) jeder Kontaktbrücke (55) um 90° nach oben umgebogen sind, und daß an den oberen Stirnseiten dieser Enden mittige Vorsprünge (58, 59) vorgesehen sind, welche in entsprechend geformte Löcher (80) nahe der Enden der als Blattfeder ausgebildeten Kontaktfeder (62) eingreifen.1. Switching bridge for electrical switching devices, in particular for contactors, with a number of contact bridges (55) which are arranged next to and / or one above the other in windows (2) and which carry contact pieces (60, 61) at their ends and which are each under pressure Contact spring (62) stand, characterized in that the ends (56, 57) of each contact bridge (55) are bent upwards by 90 °, and in that central projections (58, 59) are provided on the upper end faces of these ends, which in engage correspondingly shaped holes (80) near the ends of the contact spring (62) designed as a leaf spring. 2. Schaltbrücke nach Anspruch 1, dadurch gekennzeichnet, daß im mittleren Bereich der beiden Längsränder der Kontaktfeder (62) halbkreisförmige Aussparungen (63, 64) vorgesehen sind, in welche entsprechend geformte, in das Fenster (2) ragende Vorsprünge (65, 66) eingreifen.2. Switching bridge according to claim 1, characterized in that in the central region of the two longitudinal edges of the contact spring (62) semicircular recesses (63, 64) are provided, in which correspondingly shaped, in the window (2) projecting projections (65, 66) intervention.
EP88104209A 1984-03-31 1984-10-24 Switching bridge for electrical switching devices, particularly for contactors Expired - Lifetime EP0304539B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88104209T ATE85455T1 (en) 1984-03-31 1984-10-24 SWITCHING JUMPER FOR ELECTRICAL SWITCHING DEVICES, ESPECIALLY CONTACTORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP84103593 1984-03-31
EP84103593 1984-03-31

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP84112789.7 Division 1984-10-24

Publications (2)

Publication Number Publication Date
EP0304539A1 true EP0304539A1 (en) 1989-03-01
EP0304539B1 EP0304539B1 (en) 1993-02-03

Family

ID=8191854

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84112789A Expired - Lifetime EP0162952B2 (en) 1984-03-31 1984-10-24 Switching bridge for electrical switching devices, particularly for contactors
EP88104209A Expired - Lifetime EP0304539B1 (en) 1984-03-31 1984-10-24 Switching bridge for electrical switching devices, particularly for contactors

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP84112789A Expired - Lifetime EP0162952B2 (en) 1984-03-31 1984-10-24 Switching bridge for electrical switching devices, particularly for contactors

Country Status (3)

Country Link
US (1) US4594484A (en)
EP (2) EP0162952B2 (en)
DE (2) DE3480038D1 (en)

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DE102015212817A1 (en) 2015-07-08 2017-01-12 Te Connectivity Germany Gmbh Contact bridge arrangement for an electrical switching element
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Also Published As

Publication number Publication date
DE3486065D1 (en) 1993-03-18
EP0304539B1 (en) 1993-02-03
EP0162952B2 (en) 1992-12-23
EP0162952B1 (en) 1989-10-04
EP0162952A1 (en) 1985-12-04
DE3480038D1 (en) 1989-11-09
US4594484A (en) 1986-06-10

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