EP0356819B1 - Elektromagnetisches Schaltgerät, insbesondere Schütz - Google Patents

Elektromagnetisches Schaltgerät, insbesondere Schütz Download PDF

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Publication number
EP0356819B1
EP0356819B1 EP89115184A EP89115184A EP0356819B1 EP 0356819 B1 EP0356819 B1 EP 0356819B1 EP 89115184 A EP89115184 A EP 89115184A EP 89115184 A EP89115184 A EP 89115184A EP 0356819 B1 EP0356819 B1 EP 0356819B1
Authority
EP
European Patent Office
Prior art keywords
stops
contact
contact parts
normally
switching apparatus
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
EP89115184A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0356819A3 (de
EP0356819A2 (de
Inventor
Kurt Held
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 EP0356819A2 publication Critical patent/EP0356819A2/de
Publication of EP0356819A3 publication Critical patent/EP0356819A3/de
Application granted granted Critical
Publication of EP0356819B1 publication Critical patent/EP0356819B1/de
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
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts

Definitions

  • the innovation relates to an electromagnetic switching device with a magnet system with yoke and armature, the armature of which is connected to a contact carrier which is displaceably guided in the housing of the switching device and which has movable switching contact parts lying next to one another transversely to the direction of actuation, which form opener contacts with fixed contact parts and in the support or driving stops are provided for the switch contact parts.
  • Such a switching device can be seen, for example, from DE-AS 2 027 136 as known.
  • the so-called free path is of great interest, ie the path that has to be followed from lifting the opener to hanging up the closer.
  • This path is also dependent on the tolerances of the guidance of the contact carrier in the housing of the switching device, in particular when the break contacts are arranged on the corners of the contact carrier that are furthest away from the drive magnet.
  • there is a relatively large loss of free path due to the inevitable play of the contact carrier in the switching chamber, which must be taken into account when dimensioning the free path.
  • a switching device described above is known from document FR-A-25 191 87, which describes the closest prior art.
  • a contact bridge support is provided with two rows of window-shaped openings, in which contact bridges for NC and NO contacts are clamped by means of contact pressure springs.
  • the stops of the closer bridges in the openings are on the same level.
  • the walls of the openings, against which the contact pressure springs bear, lie at different distances from these stops. This allows closers with different contact pressure forces to be realized.
  • the switching device also has break contacts, which are formed with break bridges located in windows of different heights.
  • the contact pressure spring located in the narrower window causes a correspondingly high initial contact pressure force.
  • a magnetically operating switching device with two normally open contacts located in one plane and a further contact arranged between them is known from document US 31 09 905.
  • Two windows are provided for the latter, which, depending on the application, can alternatively be used as an alternative to a further NO contact in addition to the two outer NO contacts or an NC contact instead. Since there is only one break contact here, which is also close to the drive system, the problem mentioned at the beginning, which is related to the free travel, is not relevant.
  • the innovation is based on the task of creating a switching device in which the free travel can be determined independently of such tolerances. This is achieved in a simple manner in that the stops facing the housing wall are arranged to lead the middle stops in the direction of movement. If the stops are staggered leading to the direction of actuation, there is also a better adaptation of the traction force curve to the magnet demand curve, so that the magnet system can be designed to be weaker.
  • the formation of the stops can be achieved relatively easily if the stops face the end faces of window-shaped openings are in the contact carrier, in which contact bridges are arranged.
  • the fixed magnetic part 2 is designed as a yoke and surrounded by the excitation coil 3.
  • the armature 4 of the switching device is connected to the contact carrier, in the present case a contact bridge carrier 5, which has windows 6 in which the contact bridges 7 are held with the contact pressure springs 8.
  • the upper contact bridges 7 form normally closed contacts with the fixed contact parts, not shown, and the contact bridges 7 provided in the lower row with further fixed contact parts make contacts.
  • the end faces 9 of the window-shaped openings 6 are arranged leading to the edge of the housing in relation to the middle end faces in the direction of movement, ie in the normal case when the contact carrier 5 does not tilt, the outer contact bridges 7 are from "OFF" to "ON” before the internal contact bridges from the fixed contact parts lifted, namely by abutment on the end faces 9.
  • the offset of the end faces 9 of the windows adjacent to the middle window is denoted by 10 and that of the outer windows by 11.
  • the force requirement 12 in Newtons (N) is dependent on the air gap, ie the path (S) of the anchor specified.
  • the distance 13 corresponds to the force in the "OFF" position.
  • the back pressure force is increased by the amount of the contact pressure force of the break contacts because they no longer act against the force of the back pressure spring (dash-dot line 21). If, in order to achieve a larger free path, the offset of all windows over the end faces 9 were arranged in advance, a force requirement corresponding to the distance 14 would be required. Accordingly, a traction force curve 16 would be required - indicated by dashed lines - in order to lie above the diagram point corresponding to the route 14. The offset leading arrangement of the end faces 9 results in the extended course with the lines 17, 18 and 19.
  • the force 17 is present after the opening of the two outer current paths I and V, the force 18 after the opening of the current paths II and IV, the force 19 when the opener of the current path III lifts off.
  • a traction force curve 20 can be selected which runs significantly lower than the traction force curve 16, so that the magnet system can be designed to be weaker.
  • the power requirement indicated by the stretch 15 in the diagram according to FIG. 2 corresponds to the requirement when the make contacts close.
  • the arrangement of the stops according to the invention thus makes it possible to compensate for the loss of free travel through the different play of the contact carrier with the same traction curve without any design effort.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Tumbler Switches (AREA)
  • Electromagnets (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Contacts (AREA)
  • Railway Tracks (AREA)
  • Relay Circuits (AREA)
  • Control Of Electric Motors In General (AREA)
EP89115184A 1988-08-29 1989-08-17 Elektromagnetisches Schaltgerät, insbesondere Schütz Expired - Lifetime EP0356819B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8810908U DE8810908U1 (de) 1988-08-29 1988-08-29 Elektromagnetisches Schaltgerät, insbesondere Schütz
DE8810908U 1988-08-29

Publications (3)

Publication Number Publication Date
EP0356819A2 EP0356819A2 (de) 1990-03-07
EP0356819A3 EP0356819A3 (de) 1991-11-06
EP0356819B1 true EP0356819B1 (de) 1995-01-18

Family

ID=6827361

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115184A Expired - Lifetime EP0356819B1 (de) 1988-08-29 1989-08-17 Elektromagnetisches Schaltgerät, insbesondere Schütz

Country Status (5)

Country Link
US (1) US4987397A (ja)
EP (1) EP0356819B1 (ja)
JP (1) JP2516991Y2 (ja)
AT (1) ATE117460T1 (ja)
DE (2) DE8810908U1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8508321B2 (en) * 2010-08-17 2013-08-13 Song Chuan Precision Co., Ltd. Relay with multiple coils
US8354903B1 (en) * 2011-08-19 2013-01-15 General Electric Company Meter disconnect relay

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3109905A (en) * 1960-09-08 1963-11-05 Furaas Electric Company Magnetic contactor
DE1166895B (de) * 1961-05-15 1964-04-02 Licentia Gmbh Schuetz als Wischkontaktgeber
DE1490042B1 (de) * 1964-08-18 1971-03-04 Metzenauer & Jung Gmbh Schuetz mit wahlweise als OEffner oder Schliesser veraenderbaren Schaltbruecken-Kontakten
DE1239752B (de) * 1964-09-12 1967-05-03 Continental Elektro Ind Ag Loesbare Verbindung einer Geraeteeinheit
DE1301393B (de) * 1965-04-24 1969-08-21 Starkstrom Schaltgeraetefabrik Kontaktbrueckenanordnung fuer mit OEffnern und Schliessern ausgestattetes elektrisches Schaltgeraet
DE1690427A1 (de) * 1967-08-07 1971-07-15 Schaltelektronik Veb K Hilfsschalter fuer elektromagnetische Schuetze
US3872952A (en) * 1973-10-09 1975-03-25 Joseph L Poggie Anti-skid apparatus
DE2948959C2 (de) * 1979-12-05 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Schaltgerät
DE3105117C2 (de) * 1981-02-12 1985-10-17 Siemens AG, 1000 Berlin und 8000 München Elektromagnetisches Schaltgerät
FR2519187B1 (fr) * 1981-12-30 1985-08-16 Telemecanique Electrique Appareil interrupteur electromagnetique ayant differentes configurations d'interrupteur a ouverture ou a fermeture

Also Published As

Publication number Publication date
ATE117460T1 (de) 1995-02-15
JP2516991Y2 (ja) 1996-11-13
EP0356819A3 (de) 1991-11-06
US4987397A (en) 1991-01-22
EP0356819A2 (de) 1990-03-07
JPH0244240U (ja) 1990-03-27
DE58908904D1 (de) 1995-03-02
DE8810908U1 (de) 1988-10-13

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