EP0195956B1 - Kontaktanordnung in einem Relais für hohe Schaltleistung - Google Patents

Kontaktanordnung in einem Relais für hohe Schaltleistung Download PDF

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Publication number
EP0195956B1
EP0195956B1 EP86102734A EP86102734A EP0195956B1 EP 0195956 B1 EP0195956 B1 EP 0195956B1 EP 86102734 A EP86102734 A EP 86102734A EP 86102734 A EP86102734 A EP 86102734A EP 0195956 B1 EP0195956 B1 EP 0195956B1
Authority
EP
European Patent Office
Prior art keywords
contact
spring
strip
contact spring
prongs
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
EP86102734A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0195956A1 (de
Inventor
Michael Dipl.-Ing. Dittmann
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
Priority to AT86102734T priority Critical patent/ATE44331T1/de
Publication of EP0195956A1 publication Critical patent/EP0195956A1/de
Application granted granted Critical
Publication of EP0195956B1 publication Critical patent/EP0195956B1/de
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
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5822—Flexible connections between movable contact and terminal

Definitions

  • the invention relates to a contact arrangement in a relay for high switching power with a movable contact spring which is split at its free end into two fork ends, each of these fork ends facing at least on one side a fixed mating contact element.
  • Such a relay is known for example from DE-GM 81 34 890.
  • contact springs with split ends for double contacting have long been common in order to increase contact reliability, for example in the case of low-voltage contacts.
  • a contact spring with double contacts either serves as a bridge contact without its own connection, or the current path is distributed over two contacts in the sense of a parallel connection in order to distribute the high switching current over the cable cross-section of two connection elements and thereby protect them to protect against excessive heating.
  • the contact arrangements have so far been designed so that the entire switching current flows through the spring.
  • the contact spring must therefore consist of electrically good conductive material in order to keep the voltage drop and the heating small.
  • such a spring must also have certain elastic properties to ensure the required switching characteristics and the contact forces. In order to meet all of these requirements, the contact spring had to be made from an expensive copper alloy.
  • the object of the invention is to provide a contact arrangement for a relay of the type mentioned, a high switching current over the two fork ends of the contact spring can be performed both in use as a bridge contact and in use as a double contact without the contact spring itself must consist of electrically good conductive material, although a simple power supply to the two fork ends is still possible.
  • this object is achieved in that the two fork ends are connected via a contact strip made of electrically highly conductive material which runs transversely to the longitudinal extension of the contact spring and is exposed in the region between the fork ends.
  • the contact strip itself can be designed as a continuous contact piece which faces the two counter-contact elements.
  • This contact piece can consist, for example, of copper or a copper alloy, this strip expediently being coated with an additional noble metal coating at least in the areas opposite the counter-contact elements.
  • the contact strip itself can consist of a noble metal alloy, for example of silver-nickel or the like, so that an additional coating is not necessary.
  • a connecting wire can be welded directly onto the contact strip in this area, so that when used for double contacting, the switching current supplied does not run at all through the contact spring itself. Accordingly, this can only be designed according to its spring properties and thus be designed as a steel spring with relatively poor electrical conductivity.
  • the connecting wire welded in the middle area also does not interfere if the fork ends of the contact spring are to be provided on both sides with contact pieces for producing a double changeover contact.
  • the individual contact pieces opposite the contact strip can each be connected directly to the contact strip in openings in the spring material, so that the resistance of the spring in the current path of the switching current does not play a role here either.
  • the contact spring with fork ends designed according to the invention can also be used as a bridge contact, the contact strip itself representing the contact bridge.
  • the contact strip does not have to be solid. Rather, a flexible strand can also be used for this purpose, which ends are welded onto the fork ends of the contact spring. This has the advantage that the two fork ends are not rigidly connected to one another. For example, when welding one fork end, the other can still be moved and, if necessary, open the contact.
  • the contact arrangement shown in Fig. 1 is part of a relay, as is generally shown for example in DE-GM 83 25 986 with its magnet system.
  • a contact spring 2 is fastened to the armature 1 of such a magnet system and also serves as an armature return spring.
  • the contact spring 2 is divided at its free end into two fork ends 2a and 2b, which two Opposing contact elements 3 and 4 or the contact pieces 5 and 6 arranged thereon face each other. Due to the simultaneous contact between the contact spring 2 or its ends 2a and 2b with the two mating contact elements 3 and 4, a high switching current is distributed over two parallel paths and is derived via two connecting lugs 7 and 8, which are anchored in a base body, not shown. In this way, excessive heating of the live parts is avoided.
  • the power supply to the contact spring 2 takes place via a strand 9, which is fastened, for example welded, at one end 9a to a connecting element 10 and is welded at its other end 9b to a contact strip 11, which is transverse to the longitudinal direction of the contact spring 2 via the two Placed fork ends 2a and 2b and attached to them by welding, riveting or the like.
  • the contact strip 11 serves at the same time as a contact piece, which is provided with an additional noble metal layer 12 in the actual contact-making areas compared to the contact pieces 5 and 6.
  • the exposed middle section 11a of the contact strip 11 in the cut-away area between the fork ends 2a and 2b of the contact spring 2 enables the wire 9 to be simply welded on, as a result of which the switching current is supplied directly to the contact piece 11 and thus does not extend via the contact spring 2 itself.
  • This contact spring 2 can therefore consist of relatively cheap, electrically poorly conductive spring steel.
  • FIG. 3 shows a section through the spring ends 2a and 2b, the connection of the current-carrying parts.
  • the contact spring 2 could also be designed as a double changeover contact spring.
  • additional contact pieces 13 need only be attached on the fork ends 2a and 2b opposite the contact strip 11, as is indicated by dashed lines in FIG. 3. These additional contact pieces 13 could then cooperate with further mating contact elements, not shown. In this case, the current supply via the strand 9 would not need to be changed at all, since it is welded onto the central region 11a of the contact strip 11 and therefore does not come into conflict with the additional contact pieces 13.
  • the contact spring 2 is provided with fork ends 2a, which face two mating contact elements 3 and 4 (see FIG. 1).
  • the contact spring 2 is not provided with a power connection at all, rather the contact spring acts as a contact bridge which closes the circuit between the two mating contact elements 3 and 4 when it is closed.
  • a contact strip 19 is arranged between the fork ends 2a and 2b, which is made of a flexible strand. In this way, the two contact spring ends or fork ends 2a and 2b can perform a relative movement, so that when the contact is welded on one fork end, the contact on the other fork end can still be moved and opened.
  • contact pieces 15 and 16 are arranged on both fork ends, which are arranged with shaft extensions 17 and 18 in openings in the respective fork end and are each welded to the end 19a and 19b of the contact strip, which abuts on the opposite side of the contact spring.
  • the contact pieces 15 and 16 are provided according to the previous example with a contact pad 12 made of precious metal.
  • the contact pieces could also consist of a noble metal alloy.

Landscapes

  • Contacts (AREA)
  • Push-Button Switches (AREA)
  • Electronic Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Manufacture Of Switches (AREA)
EP86102734A 1985-03-05 1986-03-03 Kontaktanordnung in einem Relais für hohe Schaltleistung Expired EP0195956B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102734T ATE44331T1 (de) 1985-03-05 1986-03-03 Kontaktanordnung in einem relais fuer hohe schaltleistung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8506345U 1985-03-05
DE8506345U DE8506345U1 (de) 1985-03-05 1985-03-05 Kontaktanordnung in einem Relais für hohe Schaltleistung

Publications (2)

Publication Number Publication Date
EP0195956A1 EP0195956A1 (de) 1986-10-01
EP0195956B1 true EP0195956B1 (de) 1989-06-28

Family

ID=6778210

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102734A Expired EP0195956B1 (de) 1985-03-05 1986-03-03 Kontaktanordnung in einem Relais für hohe Schaltleistung

Country Status (5)

Country Link
US (1) US4683358A (enrdf_load_stackoverflow)
EP (1) EP0195956B1 (enrdf_load_stackoverflow)
JP (1) JPS61203515A (enrdf_load_stackoverflow)
AT (1) ATE44331T1 (enrdf_load_stackoverflow)
DE (2) DE8506345U1 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4922068A (en) * 1988-05-26 1990-05-01 Bangs Edmund R Densified braided switch contact
DE4019236C2 (de) * 1989-12-07 1994-04-14 Matsushita Electric Works Ltd Kontaktvorrichtung sowie mit einer Kontaktvorrichtung ausgestattetes Relais
DE19522931A1 (de) * 1995-06-23 1997-01-02 Siemens Ag Relais für hohe Schaltleistungen
DE19715115C2 (de) * 1997-04-11 2001-07-19 Aeg Niederspannungstech Gmbh Schaltvorrichtung
WO2003052783A1 (en) * 2001-12-18 2003-06-26 Tyco Electronics Amp Gmbh Electromagnetic relay with a triple contact bridge
JP3989928B2 (ja) * 2004-11-02 2007-10-10 ウチヤ・サーモスタット株式会社 電磁リレー
US20090323301A1 (en) * 2008-06-25 2009-12-31 Lear Corporation Automotive relay system
CN101807492A (zh) * 2010-03-23 2010-08-18 乐清市金川电子有限公司 大电流继电器
DE102010063172A1 (de) * 2010-12-15 2012-06-21 Tyco Electronics Amp Gmbh Kontaktanordnung für ein Relais mit zwei Laststrompfaden und einem Querstrompfad und Relais mit Kontaktanordnung
EP3078043B1 (en) * 2014-01-20 2018-03-14 ZETTLER electronics GmbH Contact arrangement for high power relay
JP6428425B2 (ja) 2015-03-20 2018-11-28 オムロン株式会社 接点機構およびこれを備えた電磁継電器
JP7361593B2 (ja) 2019-12-19 2023-10-16 富士通コンポーネント株式会社 電磁継電器

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344248A (en) * 1967-09-26 Switch for high energy circuits
US2263090A (en) * 1937-09-01 1941-11-18 Signal Engineering & Mfg Co Contact structure for electrical circuit controllers
US2597368A (en) * 1950-05-11 1952-05-20 Gen Electric Switching member for circuit breakers
US3299239A (en) * 1965-01-25 1967-01-17 Texas Instruments Inc Rivet for welded electrical connections
DE2031025A1 (de) * 1970-06-23 1971-12-30 Siemens Ag Kontaktfedersatz
DE2119428B2 (de) * 1971-04-21 1973-10-04 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Kontaktfedersatz
US3930211A (en) * 1974-11-25 1975-12-30 Caribe Circuit Breaker Co Inc Circuit breaker
US4250367A (en) * 1978-07-14 1981-02-10 Ranco Incorporated Snap action switch blades
DE2927879C2 (de) * 1979-07-11 1982-09-16 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Kontaktanordnung für Leitungsschutzschalter
EP0046148A1 (de) * 1980-08-16 1982-02-24 Rapa Rausch & Pausch elektrotechnische Spezialfabrik GmbH Minikompaktrelais
DE8109089U1 (de) * 1981-03-27 1981-07-09 Siemens AG, 1000 Berlin und 8000 München Kontaktvorrichtung für Installationsgeräte hoher Schaltleistung
DE8134890U1 (de) * 1981-11-30 1983-05-11 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais
DE3318493A1 (de) * 1983-05-20 1984-11-22 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches kleinrelais und verfahren zu dessen herstellung
DE8325986U1 (de) * 1983-09-09 1983-12-29 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Relais
DE3431909A1 (de) * 1984-08-30 1986-03-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Kontaktfeder

Also Published As

Publication number Publication date
JPH036606B2 (enrdf_load_stackoverflow) 1991-01-30
DE3664175D1 (en) 1989-08-03
DE8506345U1 (de) 1986-07-03
ATE44331T1 (de) 1989-07-15
US4683358A (en) 1987-07-28
JPS61203515A (ja) 1986-09-09
EP0195956A1 (de) 1986-10-01

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