EP0046576B1 - Dispositif de contact - Google Patents

Dispositif de contact Download PDF

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Publication number
EP0046576B1
EP0046576B1 EP81106491A EP81106491A EP0046576B1 EP 0046576 B1 EP0046576 B1 EP 0046576B1 EP 81106491 A EP81106491 A EP 81106491A EP 81106491 A EP81106491 A EP 81106491A EP 0046576 B1 EP0046576 B1 EP 0046576B1
Authority
EP
European Patent Office
Prior art keywords
carrier
pressure springs
contact
arrangement according
contact arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81106491A
Other languages
German (de)
English (en)
Other versions
EP0046576A2 (fr
EP0046576A3 (en
Inventor
Bruno Ing. grad. Jägle
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0046576A2 publication Critical patent/EP0046576A2/fr
Publication of EP0046576A3 publication Critical patent/EP0046576A3/de
Application granted granted Critical
Publication of EP0046576B1 publication Critical patent/EP0046576B1/fr
Expired 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
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances

Definitions

  • the invention relates to a contact arrangement with interacting movable contact elements and fixed contact elements, in which the movable contact elements are mounted on a carrier and are respectively biased in the direction of the associated fixed contact elements by means of pressure springs.
  • contact elements for example contact spring sets for relays
  • resilient contact elements are often used which, due to their own elasticity, store forces and can thus generate the desired contact pressure.
  • no elongated contact springs are used for reasons of dielectric strength.
  • rigid contact elements are used for switching, which are preloaded by their own pressure springs. This is especially the case with so-called bridge contact sets, in which two fixed mating contacts are connected by a common movable contact bridge during the switching process in order to achieve large contact distances.
  • the pressure springs are mostly designed as coil springs in order to achieve a soft spring characteristic in a confined space.
  • these springs are usually arranged in their own chambers of a carrier containing the contact elements or bridge contacts. This means that not only a relatively large number of individual parts must be manufactured and assembled, but that special configurations must also be provided on these parts to ensure the dielectric strength.
  • Object of the invention is to design a contact arrangement of the type mentioned at the outset in such a way that the dielectric strength between the individual contact elements can be achieved in a simpler manner.
  • the parts of the contact arrangement should be as simple to manufacture as possible; it should also be possible to keep the number of individual parts low.
  • this object is achieved in that the pressure springs connected to the carrier of the movable contact elements consist of elastic plastic.
  • These pressure springs can, for example, have a much simpler design as leaf springs than the commonly used axle springs. Also special insulating shields on the support are not required for the pressure springs.
  • the plastic springs can be produced in one operation, for example by injection molding, which in turn simplifies production compared to the production of metal springs. This already has advantages, even if the individual springs are manufactured as separate parts and fastened to the carrier by plug-in fastening or in some other way, such as, for example, ultrasonic welding or the like.
  • each case two pressure springs attached symmetrically to the support act with their free ends on a movable contact element which is displaceably mounted on the support as a contact bridge.
  • the carrier can have a central web, the movable contact elements being guided in openings in this central web.
  • the pressure springs are expediently fastened to the side of the central web.
  • crossbars can be provided on the carrier parallel to the contact elements, at the outer ends of which the pressure springs are molded as leaf springs to be run on the contact elements.
  • the pressure springs designed as leaf springs each form an acute angle between their fastening end and their free end. In this way, a particularly long spring length and thus a soft spring characteristic can be achieved in a narrow space.
  • the cross section of the pressure springs between the fastening point and the free end is designed to be uneven in accordance with the course of the bending stress. So can by increasing spring thickness or spring width from the actuation point, d. H. from the free end to the point where the maximum bending moment occurs, achieve approximately the same bending stress over the entire length of the spring.
  • a return spring which is of the same design as the pressure springs is also provided on the carrier, possibly made of plastic, if necessary.
  • a tough elastic plastic is used for the pressure springs or the return spring, which is as small as possible Owns relaxation. In this way, a lifespan comparable to that of the metal springs can be guaranteed.
  • Polyamide with fillers has proven to be particularly expedient, polyimide (trade name aramid fiber), glass fibers or even carbons being suitable as the filler.
  • FIG. 1 shows a contact bridge carrier 1 which can be used as a slide in a bridge contact set according to FIG. 2.
  • fixed contact elements 3 are anchored in a housing 2 and cooperate with the contact bridges 4 of the carrier 1.
  • the contact bridges 4 are mounted in recesses 5a of a central web 5. They are each biased against a stop 5b by pressure springs 6.
  • these contact bridges 4 are brought into connection with the contact elements 3, the contact pressure being determined by the pressure springs 6.
  • the pressure springs 6 are molded onto the central web 5 of the carrier 1, in each case in pairs in mirror images on both sides of the central web. This ensures a symmetrical pressure of the contact bridges 4, which are also arranged symmetrically.
  • the individual pressure springs are designed as leaf springs, which form an acute angle from their origin 6a on the central web to their free ends 6b abutting the contact bridges. In this way, a long spring length and a soft spring characteristic is achieved.
  • two symmetrically arranged return springs 7 are also formed, which correspond in shape to the pressure springs 6. They have the task of supporting the carrier 1 in the base body and resetting it after actuation:
  • the pressure springs 6 and the rear part springs 7 are each isolated from Ku p ststoff and to be mounted on the central web 5 of the carrier 1 or plugged with a weld joint.
  • the contact bridges 4 must be attached to the carrier anyway. In terms of production, however, it is expedient to manufacture the individual springs in one piece with the support 1 or at least with a part of the support 1, namely the central piece 5. If, as in the present example, the carrier has a central web and a cover plate 8 over the contact bridges, it is expedient to design the carrier in two parts, so that one part can be injected more easily with the springs. The other part, in the present case the cover plate 8, can then be connected to the central web 5 in a simple manner.
  • the carrier consists of the central web 5, which is shown in FIGS. 3 and 4 in two views, and the cover plate 5 according to FIG. 5.
  • the central web 5 with the molded-on pressure springs 6 or return springs 7 has recesses 5a into which the contact bridges 4 are inserted.
  • 5 fastening webs 9 with hook-shaped ends 10 are provided on the central webs, which can be snapped into recesses 11 in the cover plate 8.
  • additional elevations 12 are formed on the plate 8, which come to rest on the contact bridges 4 when the central web 5 is connected to the plate 8 (FIG. 2).
  • a driver 13 on the plate 8 is used in the usual way to be able to operate the carrier 1 as a slide by the armature of a magnet system, not shown.
  • Fig. 6 shows a modification of the carrier of Fig. 1.
  • This carrier 21 is essentially constructed with a cover plate and central web as the carrier of Fig. 1. Only the springs are designed somewhat differently.
  • the carrier 21 has on both sides of the central web 22 extending side webs 23, on the outer ends 23a, the pressure springs 24 and the return springs 25 are formed.
  • these pressure springs 24 or return springs 25 are designed as simple leaf springs running obliquely inwards. They are thus simpler in shape than the pressure springs 6 of FIG. 1 which form an acute angle.

Landscapes

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

Claims (12)

1. Dispositif de contact comportant des organes de contact mobiles (4) et des organes de contact fixes (3), coopérant entre eux, et dans lequel les organes de contact mobiles (4) sont montés sur un support (1) et sont placés sous contrainte préalable au moyen de ressorts de pression (6, 24) en direction des organes de contact fixes associés (3), caractérisé par le fait que les ressorts de pression (6, 24), reliés au support (1, 21) des organes de contact mobiles (4) sont constitués en une matière plastique élastique.
2. Dispositif de contact suivant la revendication 1, caractérisé par le fait que les ressorts de pression (6, 24) sont fabriqués séparément et sont fixés d'une manière enfichable sur le support (1).
3. Dispositif de contact suivant la revendication 1, caractérisé par le fait que les ressorts de pression (6, 24) sont réalisés d'un seul tenant par façonnage avec le support (1, 21).
4. Dispositif de contact suivant l'une des revendications 1 à 3, caractérisé par le fait que deux ressorts de pression fixés symétriquement sur le support (1) agissent, par leurs extrémités libres, sur un organe de contact mobile (4) monté de façon déplaçable sous la forme d'un pont de contacts sur le support.
5. Dispositif de contact suivant l'une des revendications 1 à 4, caractérisé par le fait que le support (1) comporte une barrette médiane (5) munie d'évidements (5a) dans lesquels les organes de contact mobiles (4) sont disposés, et que les ressorts de pression (6) sont fixés respectivement des deux côtés à la barrette médiane (5).
6. Dispositif de contact suivant la revendication 5, caractérisé par le fait que le support (1) est formé par une barrette médiane (5) et par une plaque de recouvrement (8) qui sont fabriquées séparément en soi et sont reliées entre elles par des organes de fixation (9, 10, 11) pouvant s'encliqueter les uns dans les autres.
7. Dispositif de contact suivant l'une des revendications 1 à 6, caractérisé par le fait que des barrettes transversales (23), sur les extrémités extérieures (23a) desquelles les ressorts de pression (24) sont ménagés par façonnage, sont prévus dans le support (21), parallèlement aux organes de contact (4).
8. Dispositif de contact suivant l'une des revendications 1 à 7, caractérisé par le fait que les ressorts (6) font un angle aigu entre leur extrémité de fixation et leur extrémité libre.
9. Dispositif de contact suivant l'une des revendications 1 à 8, caractérisé par le fait que la section transversale des ressorts de pression entre le point de fixation et l'extrémité libre possède une forme non régulière en fonction de l'allure de la contrainte de flexion.
10. Dispositif de contact suivant l'une des revendications 1 à 9, caractérisé par le fait qu'un ou plusieurs ressorts de rappel (7, 25) possédant une forme identique à celle des ressorts de pression sont prévus sur le support (1).
11. Dispositif de contact suivant l'une des revendications 1 à 10, caractérisé par le fait que les ressorts de pression (6, 24) et éventuellement des ressorts de rappel (7, 25) sont constitués par un polyamide contenant des substances de remplissage.
12. Dispositif de contact suivant la revendication 11, caractérisé par le fait qu'on utilise comme substances de remplissage, une polyimide, des fibres de verre ou des carbones.
EP81106491A 1980-08-22 1981-08-20 Dispositif de contact Expired EP0046576B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803031725 DE3031725A1 (de) 1980-08-22 1980-08-22 Kontaktanordnung
DE3031725 1980-08-22

Publications (3)

Publication Number Publication Date
EP0046576A2 EP0046576A2 (fr) 1982-03-03
EP0046576A3 EP0046576A3 (en) 1982-08-25
EP0046576B1 true EP0046576B1 (fr) 1984-06-13

Family

ID=6110208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106491A Expired EP0046576B1 (fr) 1980-08-22 1981-08-20 Dispositif de contact

Country Status (6)

Country Link
US (1) US4405848A (fr)
EP (1) EP0046576B1 (fr)
JP (1) JPS5772216A (fr)
BR (1) BR8105337A (fr)
DE (2) DE3031725A1 (fr)
PT (1) PT73543B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265308A (en) * 1990-12-19 1993-11-30 Intek Weatherseal Products, Inc. Jamb liner
US5278369A (en) * 1992-06-30 1994-01-11 Bremas S.P.A. Electrical operating device with contact-holding slider in two parts
EP1577919B1 (fr) * 2004-03-15 2014-09-10 Omron Corporation Relais électromagnétique
DE502004006773D1 (de) * 2004-05-26 2008-05-21 Siemens Ag Kontaktsystem
EP1600990A1 (fr) * 2004-05-26 2005-11-30 Siemens Aktiengesellschaft Système de contact

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758169A (en) * 1954-03-15 1956-08-07 Gen Motors Corp Electrical switch
FR1244183A (fr) * 1959-01-02 1960-10-21 Carr Fastener Co Ltd Dispositif de support élastique pour tiges ou barres
GB1052662A (fr) * 1963-01-18
FR1446838A (fr) * 1964-09-12 1966-07-22 Continental Elektro Ind Ag Contacteur
DE1977471U (de) * 1966-10-20 1968-01-25 Stotz Kontakt Gmbh Kontaktbrueckentraeger fuer elektrische schuetze.
US3403236A (en) * 1967-04-05 1968-09-24 Robertshaw Controls Co Electrical switch having a one-piece actuator and spring arm structure
US3694590A (en) * 1971-01-04 1972-09-26 Jon L Otterlei Slide switch with improved movable contact actuator resilient biasing means
JPS4971475A (fr) * 1972-11-11 1974-07-10
JPS561813B2 (fr) * 1973-04-20 1981-01-16
US4029924A (en) * 1974-10-10 1977-06-14 Westinghouse Electric Corporation Contact block interlock for electric switch
DE2833497C2 (de) * 1978-07-31 1983-03-10 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer Lastschalter für Niederspannungsanlagen

Also Published As

Publication number Publication date
DE3031725A1 (de) 1982-04-01
BR8105337A (pt) 1982-05-04
EP0046576A2 (fr) 1982-03-03
US4405848A (en) 1983-09-20
EP0046576A3 (en) 1982-08-25
DE3164176D1 (en) 1984-07-19
PT73543A (de) 1981-09-01
PT73543B (de) 1982-11-05
JPS5772216A (en) 1982-05-06

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