EP0222686B1 - Kontaktanordnung mit Kontakthebel voneinander trennenden Zwischenlagen - Google Patents

Kontaktanordnung mit Kontakthebel voneinander trennenden Zwischenlagen Download PDF

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Publication number
EP0222686B1
EP0222686B1 EP86730163A EP86730163A EP0222686B1 EP 0222686 B1 EP0222686 B1 EP 0222686B1 EP 86730163 A EP86730163 A EP 86730163A EP 86730163 A EP86730163 A EP 86730163A EP 0222686 B1 EP0222686 B1 EP 0222686B1
Authority
EP
European Patent Office
Prior art keywords
contact
support
levers
lever
holder
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
EP86730163A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0222686A1 (de
Inventor
Bernd Dipl.-Ing. Adam
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 EP0222686A1 publication Critical patent/EP0222686A1/de
Application granted granted Critical
Publication of EP0222686B1 publication Critical patent/EP0222686B1/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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • 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
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • H01H2001/228—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars with insulating spacers between the contact bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the invention relates to a contact arrangement for a low-voltage circuit breaker with a fixed part and a movable part, the movable part having at least one burn-off contact lever and at least two main contact levers which, together with the intermediate layers separating the contact lever, are pivotably attached to a pivotally mounted holder relative to the holder are and the holder is connected by a coupling member to a drive device.
  • a contact arrangement of this type is known, for example, from US-A-3 402 274.
  • the intermediate layers cause the contact levers to be separated to such an extent that the current paths of the adjacent contact levers are separated from one another. This is desirable to avoid eddy currents within the contact arrangement.
  • the object of the invention is to avoid undesired deflection of the bearing pin of the contact levers with as little additional material as possible.
  • the intermediate layers are designed as support members which are arranged between the hinge pin and a coupling pin which connects the holder to the coupling element in an articulated manner.
  • the coupling pin can be used as an already required part for supporting the bearing pin of the contact lever without it being necessary to enlarge the cross section of the bearing pin.
  • each support member has a support lever which exerts the actual support effect and a spacer which is movable relative to the support lever.
  • This arrangement allows the contact levers to be supported on a relatively large part of the surfaces facing one another without thereby causing disruptive frictional forces. These are considerably reduced by the mobility of the spacers.
  • each support lever has a part concentrically surrounding the bearing pin with a circular arc having more than 180 ° and the spacer has a recess which overlaps the concentric part of the support lever.
  • the desired limitation of the mobility of the spacer can be achieved by a suitable dimensioning of the opening angle of the recess of the spacer.
  • Non-magnetic steel for example, is suitable as the material for producing the support levers and the spacers.
  • this material has the property of a relatively low electrical conductivity, which largely prevents the formation of a current path running transversely to the intended direction of the current within the contact arrangement.
  • the support and the spacers can be made of different materials, e.g. B. made of sheet steel and brass. The invention is explained below with reference to the embodiment shown in the figures.
  • FIG. 1 shows a side view of a contact arrangement of a low-voltage circuit breaker.
  • FIG. 2 shows the contact arrangement according to FIG. 1 in a partially sectioned side view.
  • FIG. 3 is a view of the movable part of the contact arrangement according to FIGS. 1 and 2.
  • Figure 4 shows a support member and a spacer.
  • the contact arrangement 1 shown in FIGS. 1, 2 and 3 has a fixed part 2 and a movable part 3.
  • An insulating block 4 which has an approximately angular cross section, serves as the carrier for the fixed parts.
  • a main contact body 5 which also serves as an upper connecting bar, is attached with contact piece supports 6.
  • a fixed burnout contact body 7 with a contact piece support 10 and with an arcing horn 11 is in conductive connection with the main contact body 5.
  • a bifurcated connecting rail 12 is fastened to the underside of the insulating block 4, to which a flexible current band 13 is conductively connected.
  • the flexible current band 13 forms a movable electrical connection between the fixed part 2 and the movable part 3 of the contact arrangement 1.
  • the movable part 3 has a central burn-off contact lever 15 with a burn-off contact body 16 as well as a contact piece support 17 and an arcing horn 20.
  • Main contact levers 21 and 22, which are also provided with contact piece supports 23, are located on both sides of the burn-off contact lever 15. As shown in FIG. 3 in particular, there are a total of five flexible current strips 13, two for each of the main contact levers 21, 22 and one current band for the burn-off contact lever 15.
  • the pivot axis of the movable part 3 of the contact arrangement 1 is formed by a hinge pin 24, the ends of which engage in the lateral legs 25 of a bearing bracket 26, which on the insulating block 4 is attached.
  • the hinge pin 24 also passes through bolts 30, 31 and 32 connected side walls 33 of a holder 34 which receives the contact lever. These sit on a common hinge pin 35 serving as a pivot bearing, the ends of which are supported in the side walls 33 of the holder 34.
  • Insulating coupling elements 36 are used to transmit a drive movement to the movable part of the contact arrangement 1, which are omitted in FIG. 3 to improve clarity.
  • the coupling members 36 pivotally engage a coupling pin 37, the ends of which are also supported in the side walls 33 of the holder 34.
  • Movable part 3 of contact arrangement 1 reaches the switch-on position shown by moving coupling elements 36 in the direction of arrow 40 in FIGS. 1 and 2.
  • the required contact force between the contact piece supports 6 and 23 and 10 and 17 is generated by tension between the legs of the U-shaped current strips 13 arranged compression springs 41.
  • the coupling members 36 are released by unlatching a suitable switch lock (not shown), as a result of which the movable part 3 of the contact arrangement 1 reaches its switch-off position.
  • support levers 45 are arranged between the burn-off contact lever 15 and the main contact levers 21, 22 adjoining on both sides, which are shown in broken lines in FIG. 2 and are shown separately in an enlarged scale in FIG.
  • the support levers 45 have bearing openings 46 and 47 for the passage of the hinge pin 35 and the coupling pin 37.
  • the coupling pin 37 is used to support the hinge pin 35.
  • spacers 50 between the burn-off contact lever 15 and the main contact levers 21 and 22, which cover a substantial part of the mutually facing sides of the contact levers. This prevents the contact levers from tilting under the influence of current forces.
  • each support lever 45 is provided with an arc-shaped part 48 concentrically with its bearing opening 46 provided for the hinge pin 35, the arc extending over more than 180 ° .
  • the spacers 50 have a recess 51 adapted to this circular arc shape, the opening of which is denoted by an arc arrow 52 shown in FIG. 4, so that the support lever 45 and the spacer 50 can perform a limited pivoting relative to one another, which need only be a few degrees of angle.
  • the two parts cannot be separated from each other as long as they are both on the same plane.
  • a non-magnetic steel is suitable as the material for the production of both the support lever 45 and the spacer 50, which due to its alloy components also has a relatively low electrical conductivity.
  • Different materials can also be used, e.g. B. non-magnetic steel for the support lever 45 and brass or insulating material for the spacers 50th

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
EP86730163A 1985-11-07 1986-10-20 Kontaktanordnung mit Kontakthebel voneinander trennenden Zwischenlagen Expired EP0222686B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3539788 1985-11-07
DE19853539788 DE3539788A1 (de) 1985-11-07 1985-11-07 Kontaktanordnung mit kontakthebel voneinander trennenden zwischenlagen

Publications (2)

Publication Number Publication Date
EP0222686A1 EP0222686A1 (de) 1987-05-20
EP0222686B1 true EP0222686B1 (de) 1989-10-04

Family

ID=6285560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730163A Expired EP0222686B1 (de) 1985-11-07 1986-10-20 Kontaktanordnung mit Kontakthebel voneinander trennenden Zwischenlagen

Country Status (6)

Country Link
US (1) US4709127A (enrdf_load_stackoverflow)
EP (1) EP0222686B1 (enrdf_load_stackoverflow)
JP (1) JPH0752619B2 (enrdf_load_stackoverflow)
BR (1) BR8605497A (enrdf_load_stackoverflow)
DE (2) DE3539788A1 (enrdf_load_stackoverflow)
IN (1) IN164117B (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01241720A (ja) * 1988-03-24 1989-09-26 Terasaki Denki Sangyo Kk 開閉器の接触子装置
US5973280A (en) * 1998-03-23 1999-10-26 Eaton Corporation Circuit breaker with an anti-lift pivot handle
US6072136A (en) * 1998-05-07 2000-06-06 Eaton Corporation Electrical switching apparatus with modular operating mechanism for mounting and controlling large compression close spring
US6005206A (en) * 1998-05-07 1999-12-21 Eaton Corporation Electrical switching apparatus with improved contact arm carrier arrangement
JP4224301B2 (ja) 2001-04-04 2009-02-12 シーメンス アクチエンゲゼルシヤフト 電力遮断器用開閉接触子装置
DE10148947C1 (de) * 2001-09-28 2003-02-13 Siemens Ag Schaltkontaktanordnung eines Niederspannungs-Leistungsschalters
DE102004009873A1 (de) * 2004-02-26 2005-09-15 Siemens Ag Schaltkontaktanordnung
US7368677B2 (en) * 2005-12-14 2008-05-06 Eaton Corporation Reverse bias hatchet reset spring
US7935902B2 (en) * 2008-04-15 2011-05-03 General Electric Company Contact assembly of circuit breaker
KR20120138805A (ko) 2010-03-12 2012-12-26 샤프 가부시키가이샤 발광 장치의 제조 방법, 발광 장치, 조명 장치, 백라이트, 액정 패널, 표시 장치, 표시 장치의 제조 방법, 표시 장치의 구동 방법 및 액정 표시 장치
FR3122944B1 (fr) * 2021-05-11 2023-11-10 Hager Electro Sas Contact mobile configuré pour être intégré dans un disjoncteur

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402274A (en) * 1965-10-01 1968-09-17 Square D Co Contact structure for a power circuit breaker
US4242577A (en) * 1976-12-30 1980-12-30 Westinghouse Electric Corp. Circuit breaker having insulation barrier

Also Published As

Publication number Publication date
EP0222686A1 (de) 1987-05-20
JPS62113321A (ja) 1987-05-25
US4709127A (en) 1987-11-24
JPH0752619B2 (ja) 1995-06-05
BR8605497A (pt) 1987-08-11
DE3666109D1 (en) 1989-11-09
IN164117B (enrdf_load_stackoverflow) 1989-01-14
DE3539788A1 (de) 1987-05-14

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