EP1298692A2 - Dispositif de contact pour un disjoncteur basse tension - Google Patents

Dispositif de contact pour un disjoncteur basse tension Download PDF

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Publication number
EP1298692A2
EP1298692A2 EP02090331A EP02090331A EP1298692A2 EP 1298692 A2 EP1298692 A2 EP 1298692A2 EP 02090331 A EP02090331 A EP 02090331A EP 02090331 A EP02090331 A EP 02090331A EP 1298692 A2 EP1298692 A2 EP 1298692A2
Authority
EP
European Patent Office
Prior art keywords
contact
spacers
contact carrier
bearing pin
support surface
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.)
Granted
Application number
EP02090331A
Other languages
German (de)
English (en)
Other versions
EP1298692B1 (fr
EP1298692A3 (fr
Inventor
Ludvik Godesa
Marc Liebetruth
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 EP1298692A2 publication Critical patent/EP1298692A2/fr
Publication of EP1298692A3 publication Critical patent/EP1298692A3/fr
Application granted granted Critical
Publication of EP1298692B1 publication Critical patent/EP1298692B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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

Definitions

  • the thickness of the bearing pin is not unlimited can be increased, because on the one hand the receiving bore in the contact lever because of the current carrying capacity of the same possible should be small and on the other hand, the storage in the contact carrier can be difficult, at high stress of the bearing pin a deflection of the same occur, because this is supported only at its ends in the contact carrier.
  • These bending forces act because of the larger effective lever arm from the arranged towards the center of the contact carrier Contact levers most on the center of the bearing pin, so that the greatest deflection occurs here. The result is, that in the region of the middle contact lever, the contact force decreases what happens with selective low-voltage circuit breakers must be avoided as possible to avoid damage to the contacts to avoid.
  • the invention is based on the object, one against stresses caused by high currents mechanically and electrically resistant contact arrangement with a plurality parallel pivotal contact levers to create the have a defined bearing axis.
  • the spacers are that the outer support surface and one on the contact carrier arranged mating surface concentric are, suitably such that the outer support surface and the arranged on the contact carrier mating surface concentric with the Passage opening are arranged.
  • the spacer can then be formed as a circular cylindrical disk, which is the Handling during assembly of the contact arrangement of their Relieved items.
  • the spacers in the last-mentioned embodiment have Similarity with a washer, differ of these, however, by their design and condition. Although may be useful in their preparation also of sheet-shaped semi-finished, but it comes stronger than washers on compliance with all dimensions at.
  • the passage opening and the support surface together in one operation as Precision surfaces are produced.
  • a material for example Brass sheet suitable.
  • FIG. 1 shows a schematic representation of a Low-voltage circuit breaker with a switching contact arrangement according to the invention in section.
  • FIG. 2 shows an enlarged detail of a movable one Contact carrier of the circuit breaker according to the figure 1 on average.
  • a disc-shaped spacer for the contact arrangement according to the figure 2 is shown as a single part in the figure 3.
  • Figures 4 and 5 show further embodiments of spacers.
  • Figure 6 shows a contact carrier and the associated Contact lever with spacers and a bearing pin, wherein Spacers are provided only in the central region of the bearing pin are.
  • FIG. 7 shows a representation corresponding to FIG a contact arrangement in which between all existing Contact levers spacers are arranged.
  • the low-voltage circuit breaker shown in Figure 1 1 has a housing 2, in which parallel to each other depending on the required number of poles switching chambers 3 are added.
  • a Drive device 4 is used for common operation of Switching contact assemblies 5, each consisting of a fixed Contact assembly 6 and a movable contact assembly 7 exist.
  • the contact assemblies are 6 and 7 connected to externally accessible connecting rails 8 and 9. Details of the movable contact assembly 7 are explained below with reference to FIG 2.
  • FIG. 2 belongs to the Contact assembly 7 a partially cut shown Contact carrier 10 made of insulating plastic, in the housing 2 (see Figure 1) is pivotally mounted and means the drive device 4 relative to the fixed contact assembly 6 in a closed position and in an off position to convict.
  • On the contact carrier 10th are a plurality of parallel arranged contact lever 11th about a location bolt 12 relative to the contact carrier 10th pivotable, wherein contact force springs 13 for a bias voltage the contact lever 11 in the direction of the fixed contact assembly to care.
  • Flexible ladder 14 in the form of strands or bands are used to connect the contact lever 11 with the lower connecting rail 9 in such a way that an unhindered Mobility of the contact lever 11 and the contact carrier 10 is ensured in the switching movements.
  • the number of attached to the contact carrier 10 contact lever 11 depends on the amount of current that the Circuit breaker 1 should run during operation. As the figure 6 can be seen, there are a total of 13 contact levers, of which nine contact lever the shape of the contact lever 11th 2, while four further contact levers, the pairs on both sides of a medium group of contact levers 11 are arranged as a shorter contact lever 16 is formed which are only one main contact area, but none Precontact and have no arcing horn.
  • the in the figure 6 arrangement of contact levers 11 and 16 is opposite the width of the contact carrier 11 pulled apart to show still to be explained details. In operational condition, all contact levers are between side cheeks 17 of the contact carrier 10 was added, the are provided with receiving openings 18 for the bearing pin 12 and go down into bearing arms 15.
  • the relatively large width of the switch contact arrangement according to the Figure 6 entails that the bearing pin 12 of a relative heavy stress is subjected to bending when in the closed state of the switch contact arrangement 5 next the forces of the contact force springs 13 more forces To add a high current such as short-circuit or surge current.
  • a high current such as short-circuit or surge current.
  • the inner diameter d a through hole 19 with close tolerance to the diameter the bearing pin 12 adapted during the outer diameter D an outer cylindrical support surface 21 on a on the contact carrier 10 at its the contact levers 11 and 16 facing Side arranged counter surface 21 is tuned.
  • the mutual coordination of the support surface 21 and the counter surface 22 is that the counter surface 22 concentric formed to the axis of the spacer 20 as a cylindrical surface is and in the off state of rest of the outer support surface 21 with a minimum distance A faces.
  • the distance A in the figure 2 can not be represented, so that there the support surface 21 to abut against the counter surface 22 seems.
  • FIG. 2 that is indicated by an arrow provided reference numeral A to the distance. This causes the spacers 20 unhindered on the bearing pin 12 can be threaded when the contact lever 11 and 16 are mounted.
  • the spacers 20 according to the figure 3 may preferably Made of brass sheet in a fine blanking process.
  • the inner peripheral surface of the through hole receive 19 and the outer support surface 21 is a smooth cylindrical Shape without burr formation. This is an areal Installation of the spacer 20 both on the bearing pin 12th as well as on the opposite surface 21 ensured.
  • the space becomes between the cheeks 17 of the contact carrier 10 by the contact lever 11 and 16 including the spacers 20 to size filled. If only between the individual Contact lever spacers 20 provided as in the example according to the figure 6, so it is recommended, at least the rest Contact lever 11 and 16 with projections 23 or the like Characteristics that provide a mutual distance of the Contact levers 11 and 16 cause and thus also the desired Width measure.
  • FIG. 4 likewise has an inner passage opening 19 with a bearing pin 12 adapted diameter d provided, however, has a flat support surface 25. Accordingly the spacer 24 is a flat counter surface 26 on the associated contact carrier opposite.
  • FIG. 5 27 Another spacer illustrated in FIG. 5 27 is provided with a concave support surface 28, the one opposite convex surface 29 of the associated contact carrier stands.
  • Supporting body 24 and 27 according to Figures 4 and 5 allow relatively large support surfaces and thus low To realize stresses on the mating surfaces of the contact carrier. Furthermore, an uncontrolled rotation of the spacers prevented due to any influences. however is the correct position of these spacers during assembly relative to the contact carrier.
  • the support surfaces of the spacers stand and the corresponding mating surfaces on the contact carriers with a minimum distance A of the order of magnitude of a few tenths of a millimeter across.
  • A is set at 0.2 mm, this is at the same time the measure on which a deflection of the bearing pin 12 is limited under heavy use. This deflection is so low that it has virtually no impact the position of the contact lever and thus no influence on the size of the contact force.

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  • Breakers (AREA)
EP02090331A 2001-09-28 2002-09-13 Dispositif de contact pour un disjoncteur basse tension Expired - Fee Related EP1298692B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10148947 2001-09-28
DE10148947A DE10148947C1 (de) 2001-09-28 2001-09-28 Schaltkontaktanordnung eines Niederspannungs-Leistungsschalters

Publications (3)

Publication Number Publication Date
EP1298692A2 true EP1298692A2 (fr) 2003-04-02
EP1298692A3 EP1298692A3 (fr) 2003-10-15
EP1298692B1 EP1298692B1 (fr) 2004-12-15

Family

ID=7701360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02090331A Expired - Fee Related EP1298692B1 (fr) 2001-09-28 2002-09-13 Dispositif de contact pour un disjoncteur basse tension

Country Status (2)

Country Link
EP (1) EP1298692B1 (fr)
DE (2) DE10148947C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101908443A (zh) * 2010-08-05 2010-12-08 无锡新宏泰电器科技股份有限公司 一种断路器的触头***
WO2022238242A1 (fr) * 2021-05-11 2022-11-17 Hager-Electro Sas Contact mobile configuré pour être intégré dans un disjoncteur

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004009873A1 (de) * 2004-02-26 2005-09-15 Siemens Ag Schaltkontaktanordnung
DE102004020654A1 (de) * 2004-04-22 2005-11-10 Siemens Ag Schaltkontaktanordnung
DE102004058764A1 (de) * 2004-11-30 2006-06-01 Siemens Ag Anschlussschiene für flexible elektrische Leiter
DE102005009484A1 (de) * 2005-02-23 2006-09-14 Siemens Ag Kontakthebelbaugruppe für einen Niederspannungs-Leistungsschalter
US7935902B2 (en) * 2008-04-15 2011-05-03 General Electric Company Contact assembly of circuit breaker
EP2674952B1 (fr) 2012-06-11 2018-10-10 ABB Oy Appareil de commutation de courant électrique
EP2674953B1 (fr) 2012-06-11 2018-01-24 ABB Oy Appareil de commutation de courant électrique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1545113A (fr) * 1966-11-21 1968-11-08 Gen Electric Dispositif articulé de coupure pour disjoncteur ou interrupteur
DE3539788A1 (de) * 1985-11-07 1987-05-14 Siemens Ag Kontaktanordnung mit kontakthebel voneinander trennenden zwischenlagen
US5012053A (en) * 1988-03-24 1991-04-30 Terasaki Denki Sangyo Kabushiki Kaisha Contact device for a switch
US5389906A (en) * 1993-08-20 1995-02-14 General Electric Cost-efficient industrial-rated molded case breaker
DE19629482C1 (de) * 1996-07-12 1997-09-11 Siemens Ag Schaltkontaktanordnung mit einer Gelenkanordnung für einen Kontakthebel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758108C (de) * 1937-10-09 1954-02-01 Siemens Schuckertwerke A G Kontaktanordnung fuer elektrische Schaltgeraete
DE3679291D1 (de) * 1985-10-31 1991-06-20 Merlin Gerin Kinematische uebertragungskette zwischen dem steuermechanismus und den polen eines elektrischen lastschalters mit einem gespritzten isoliergehaeuse.
DE29502564U1 (de) * 1995-02-16 1996-06-20 Siemens AG, 80333 München Elektrische Maschine
DE29609824U1 (de) * 1996-05-21 1997-07-24 Siemens AG, 80333 München Niederspannungs-Leistungsschalter mit einem Kontaktträger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1545113A (fr) * 1966-11-21 1968-11-08 Gen Electric Dispositif articulé de coupure pour disjoncteur ou interrupteur
DE3539788A1 (de) * 1985-11-07 1987-05-14 Siemens Ag Kontaktanordnung mit kontakthebel voneinander trennenden zwischenlagen
US5012053A (en) * 1988-03-24 1991-04-30 Terasaki Denki Sangyo Kabushiki Kaisha Contact device for a switch
US5389906A (en) * 1993-08-20 1995-02-14 General Electric Cost-efficient industrial-rated molded case breaker
DE19629482C1 (de) * 1996-07-12 1997-09-11 Siemens Ag Schaltkontaktanordnung mit einer Gelenkanordnung für einen Kontakthebel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101908443A (zh) * 2010-08-05 2010-12-08 无锡新宏泰电器科技股份有限公司 一种断路器的触头***
CN101908443B (zh) * 2010-08-05 2014-05-14 无锡新宏泰电器科技股份有限公司 一种断路器的触头***
WO2022238242A1 (fr) * 2021-05-11 2022-11-17 Hager-Electro Sas Contact mobile configuré pour être intégré dans un disjoncteur
FR3122944A1 (fr) * 2021-05-11 2022-11-18 Hager-Electro Sas Contact mobile configuré pour être intégré dans un disjoncteur

Also Published As

Publication number Publication date
EP1298692B1 (fr) 2004-12-15
DE50201764D1 (de) 2005-01-20
DE10148947C1 (de) 2003-02-13
EP1298692A3 (fr) 2003-10-15

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