EP0106075B1 - Interrupteur à contacts pontants - Google Patents

Interrupteur à contacts pontants Download PDF

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Publication number
EP0106075B1
EP0106075B1 EP83108318A EP83108318A EP0106075B1 EP 0106075 B1 EP0106075 B1 EP 0106075B1 EP 83108318 A EP83108318 A EP 83108318A EP 83108318 A EP83108318 A EP 83108318A EP 0106075 B1 EP0106075 B1 EP 0106075B1
Authority
EP
European Patent Office
Prior art keywords
contact
fixed contacts
switch
contacts
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.)
Expired - Lifetime
Application number
EP83108318A
Other languages
German (de)
English (en)
Other versions
EP0106075A3 (en
EP0106075A2 (fr
Inventor
Jürgen Willems
Detlev Beyer
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.)
ELAN-SCHALTELEMENTE GMBH
Original Assignee
Elan-Schaltelemente 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 Elan-Schaltelemente GmbH filed Critical Elan-Schaltelemente GmbH
Publication of EP0106075A2 publication Critical patent/EP0106075A2/fr
Publication of EP0106075A3 publication Critical patent/EP0106075A3/de
Application granted granted Critical
Publication of EP0106075B1 publication Critical patent/EP0106075B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • 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
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H01H1/10—Laminated contacts with divided contact surface
    • 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
    • H01H1/2083—Bridging contact surfaces directed at an oblique angle with respect to the movement of the bridge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H2011/046—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by plating

Definitions

  • the invention relates to a switch with fixed contacts arranged in a housing and with a contact bridge carrier slidably mounted in the housing.
  • a switching relay is known from DE-A-2 315 567, in which both the fixed contacts and the contact breaks are designed to be resilient.
  • the respective cooperating end pieces of the fixed contacts and the contact bridge support are arranged obliquely with respect to the axis of movement of the contact bridge support.
  • the rounded contacts of the contact bridge carrier slide along the inclined, but elastically deforming contact surfaces of the fixed contacts, which results in poor contact pressure during contacting, which in turn does not ensure sufficient self-cleaning of the contacting areas, in particular for switching operations at low current loads can.
  • This relay should switch currents of at least 10 amps safely.
  • the object of the invention is to provide a switch which ensures good contact with a long service life of the switch at low and medium loads.
  • a switch of the type mentioned above the contact bridges of which, depending on the position of the contact bridge carrier, connect two fixed contacts galvanically to one another or interrupt a conductive connection between the fixed contacts, the contact bridges being resilient and cooperating end pieces of the fixed contacts and contact bridges in relation are arranged obliquely on the axis of movement of the contact bridge carrier, the end pieces of the contact bridges carry rounded contacts and the associated contact surfaces of the fixed contacts are provided with an embossing with an edge-shaped profile, the fixed contacts are designed in such a way that the end pieces of the contact bridges are made when making contact on the inclined contact surfaces of the Slide fixed contacts along, and the cutting-shaped profile of the embossing to the direction of sliding movement between the contacts of the end pieces of the contact bridges and the contact surfaces the fixed contacts are aligned.
  • the contact surfaces of the fixed contacts consist of a highly conductive metal and are connected to the fixed contacts by plating. Furthermore, it is expedient if the embossing has a triangular cross section.
  • the roughness depth of the embossing is in particular in a range between 0.01 and 1 mm, preferably between 0.05 and 0.2 mm.
  • Fig. 1 shows in a sectional view only one half of a switch in a first switching position.
  • the switch 10 comprises a housing 11 in which fixed contacts 12, 12 'are arranged in a stationary manner.
  • the switch 10 further comprises a contact bridge carrier 13 slidably mounted in the housing 11, the contact bridges 14, 14 'of which, depending on the position of the contact bridge carrier 13, galvanically connect two fixed contacts 12 or 12' or interrupt a conductive connection between the fixed contacts 12 or 12 ' .
  • one contact system is designed as a break contact or a make contact. It goes without saying that the invention can also be applied to switches which either contain only break contacts or only make contacts or any combination of these functions in large numbers.
  • the cooperating end pieces of the fixed contacts 12, 12 'and the contact bridges 14, 14' are arranged obliquely with respect to the axis of movement of the contact bridge carrier 13.
  • the end pieces of the fixed contacts 12, 12 'and the end pieces of the contact bridges 14, 14' preferably lie in planes running parallel to one another, although it should be noted that the contact bridges 14, 14 'are resilient and in particular can swivel reversibly out of this initially predetermined level in the course of contacting.
  • the inclination of the cooperating end pieces of the fixed contacts 12, 12 'and the contact bridges 14, 14' leads to a particularly reliable contact even with only a small current load.
  • the contacts since the contact bridges 14, 14 'slide along the inclined contact surfaces 120 (FIG. 3) of the fixed contacts 12, 12' and thereby pierce any oxide skins that may be present.
  • the fixed contacts 12 'and the contact bridge 14' have the function of an opener, while the fixed contacts 12 and the contact bridge 14 have the function of a closer.
  • the end piece of the contact bridge carrier 14 first touches the opposite contact surface of the respective fixed contact 12 and then slides along the inclined contact surface, as a result of which the previously described effect of penetration of the oxide skin occurs.
  • the resilient contact bridge 14 expediently yields somewhat.
  • the inclined position of the contact surfaces also results in particularly reliable contacting, since when the contact bridge carrier 13 is actuated, a force component in the lateral direction is effective in addition to the force component present in the actuation direction.
  • the switch is designed such that it can be easily attached in a plurality next to one another.
  • spring elements 110 are provided which snap into fastening means, not shown, after the switch has been plugged on.
  • FIG. 2 shows the second switching state of the switch, mirror-symmetrical to FIG. 1, which is achieved by actuating the contact bridge carrier 13 in the direction of the arrow 200.
  • this switching state the galvanic connection between the fixed contacts 12 is interrupted, while the contact bridge 14 'establishes a conductive connection via the fixed contacts 12'.
  • the contact surface 120 of the fixed contacts 12, 12 ' is made of a highly conductive material, e.g. Made of fine silver, which is connected by plating to the fixed contact 12, 12 '. This is shown schematically in FIG. 3.
  • the contact surfaces 120 are provided with an embossment 120 '.
  • This embossing 120 ' is shown schematically in FIG. 4, which shows a view from the viewing direction X of the contact surface 120 of FIG. 3.
  • the embossment 120 ' preferably has a cutting-shaped profile with a triangular cross-section. This is illustrated schematically by FIG. 5, which is a sectional view along line 5-5 of FIG. 4.
  • the roughness depth of the embossment 120 ′ can be in the range from approximately 0.01 to 1 mm, but values in the range from approximately 0.05 to 0.2 mm are preferably selected.
  • the switch is ideally suited for switching applications in the area of low current loads in the order of a few milliamps and below to medium loads in the order of a few 10 amperes.
  • the described shape and arrangement of the contact elements enable the problems arising from oxide formation to be mastered, in particular with a low current load.
  • a long service life and reliability, in particular with a higher current load, is mainly achieved in that it is possible to choose the contact areas of the contact elements corresponding to the current load without impairing the function at low loads.
  • contact surfaces can also be coated with precious metals, in particular gold, in a manner known per se.

Landscapes

  • Contacts (AREA)
  • Slide Switches (AREA)

Claims (4)

1. Commuatateur comportant des contacts fixes (12,12') disposés à demeure dans un boîtier (11) et un support de lames de contact (13) supporté de façon à pouvoir glisser dans le boîtier (11), dont les lames de contact (14, 14') relient galvaniquement, en fonction de la position du support de lames de contact (13), deux contacts fixes ou interrompent une liaison conductrice entre ces contacts fixes (12, 12'), les lames de contact (14, 14') faisant ressort, et les lames de contact étant disposées obliquement par rapport à l'axe du mouvement du support des lames de contact (13), les parties d'extrémité des lames de contact (14, 14') portant des contacts arrondis et la surface de contact (120) correspondante des contacts fixes (12,12') étant munie d'une indentation (120') qui présente un profil en forme de couteau, en ce que les contacts fixes (12, 12') sont formés de - façon à ce que les parties d'extrê- mité des lames de contact (14, 14'), lors de la préparation des contacts (120), glissent sur la surface de contact (120) et que le profil en forme de lame de l'indentation (120') soit dirigée dans le sens du déplacement de glissement entre les contacts des parties d'extrémité des lames de contact (14,14') et la surface de contact (120) des contacts fixes (12, 12').
2. Commutateur selon la revendication 1, caractérisé en ce qu'au moins les surfaces de contact (120) des contacts fixes (12, 12') sont en un matériau bon conducteur et sont reliées par placage aux contacts fixes (12, 12').
3. Commutateur selon la revendication 1 ou 2, caractérisé en ce que l'indentation (120') présente une section triangulaire.
4. Commutateur selon l'une des revendications 1 à 3, caractérisé en ce que la profondeur de rugosité de l'indentation (120') se situe dans une zone comprise entre 0,01 et 1 mm, avantageusement entre 0,05 et 0,2 mm.
EP83108318A 1982-09-11 1983-08-24 Interrupteur à contacts pontants Expired - Lifetime EP0106075B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823233858 DE3233858A1 (de) 1982-09-11 1982-09-11 Schaltelement
DE3233858 1982-09-11

Publications (3)

Publication Number Publication Date
EP0106075A2 EP0106075A2 (fr) 1984-04-25
EP0106075A3 EP0106075A3 (en) 1987-01-21
EP0106075B1 true EP0106075B1 (fr) 1990-04-25

Family

ID=6173052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108318A Expired - Lifetime EP0106075B1 (fr) 1982-09-11 1983-08-24 Interrupteur à contacts pontants

Country Status (2)

Country Link
EP (1) EP0106075B1 (fr)
DE (2) DE3233858A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008043186A1 (de) * 2008-10-27 2010-04-29 Robert Bosch Gmbh Elektromagnetischer Schalter für eine Startvorrichtung sowie Verfahren zum Schalten des elektromagnetischen Schalters

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE595409C (de) * 1931-04-26 1934-04-10 Stotz Kontakt Gmbh Umschaltgeraet mit einer mehrere Kontaktbruecken tragenden Isolierstoffschaltbruecke
US2490020A (en) * 1946-02-11 1949-12-06 First Ind Corp Electrical contact
FR1170621A (fr) * 1957-04-04 1959-01-16 Kienzle Uhrenfabriken Ag Dispositif de contact électrique
DE2315567A1 (de) * 1973-03-28 1974-10-17 Huetoegepgyar Kontakt- und betaetigungsvorrichtung fuer elektrische schalter vornehmlich fuer motoranlassrelais
CH612536A5 (en) * 1977-05-03 1979-07-31 Bbc Brown Boveri & Cie Electrical switch, especially for switching large direct currents
FR2504311A1 (fr) * 1981-04-15 1982-10-22 Telemecanique Electrique Interrupteur electrique operant la fermeture et l'ouverture repetees d'un circuit electrique

Also Published As

Publication number Publication date
DE3233858A1 (de) 1984-03-15
EP0106075A3 (en) 1987-01-21
EP0106075A2 (fr) 1984-04-25
DE3381507D1 (de) 1990-05-31

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