EP1914767A1 - Bewegliche Kontaktanordnung für einen Leistungsschalter - Google Patents

Bewegliche Kontaktanordnung für einen Leistungsschalter Download PDF

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Publication number
EP1914767A1
EP1914767A1 EP07019935A EP07019935A EP1914767A1 EP 1914767 A1 EP1914767 A1 EP 1914767A1 EP 07019935 A EP07019935 A EP 07019935A EP 07019935 A EP07019935 A EP 07019935A EP 1914767 A1 EP1914767 A1 EP 1914767A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
movable contactor
shaft
shaft portion
cage
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
EP07019935A
Other languages
English (en)
French (fr)
Other versions
EP1914767B1 (de
Inventor
Jae-Kwan Seo
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.)
LS Electric Co Ltd
Original Assignee
LS Industrial Systems Co Ltd
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 LS Industrial Systems Co Ltd filed Critical LS Industrial Systems Co Ltd
Publication of EP1914767A1 publication Critical patent/EP1914767A1/de
Application granted granted Critical
Publication of EP1914767B1 publication Critical patent/EP1914767B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5833—Electric connections to or between contacts; Terminals comprising an articulating, sliding or rolling contact between movable contact and terminal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/02—Details
    • H01H31/026—Movable parts and contacts mounted thereon

Definitions

  • the present disclosure relates to a movable contactor for a circuit breaker, and more particularly, to a movable contactor for a circuit breaker capable of reducing the number of assembly processes by reducing the number of components, and capable of reducing a production cost.
  • a circuit breaker is connected to a circuit on which a current flows.
  • the circuit breaker serves to supply a current onto the circuit at the time of a normal current occurrence, but to cut off the current on the circuit at the time of an abnormal current occurrence thereby to protect the circuit and components.
  • the circuit breaker comprises a cage having a receiving space therein; a plurality of fixed contactors having fixed contacts and fixed in the cage; a plurality of movable contactors having movable contacts so as to come in contact with the fixed contacts, and disposed in the cage so as to perform a relative motion with respect to the fixed contactors; a driving unit for driving the movable contactors; and a detecting unit for detecting an over-current, an abnormal current, etc. and thereby operating the driving unit.
  • One side of the movable contactor is connected to outlet side fixed contacts of the fixed contactor, and another side of the movable contactor is connected or separated to/from inlet side fixed contacts of the fixed contactor as the movable contactor is moved.
  • a plurality of extinguishing chambers for exhausting arcs generated when the movable contactor and the fixed contactor contact or are separated from each other are provided at an upper side of the movable contactor.
  • the movable contactors When a normal current occurs, the movable contactors are connected to the inlet side fixed contacts of the fixed contactors. Accordingly, power is introduced from the inlet side fixed contacts of the fixed contactors thereby to flow along a path inside the movable contactors. Then, the power flowing along the path inside the movable contactor is supplied to a load side through the outlet side fixed contacts of the fixed contactors.
  • the driving unit When an over-current and an abnormal current are detected by the detecting unit, the driving unit is operated by an operation mechanism in the circuit breaker. As the driving unit is operated, the movable contactors are angle-rotated. Here, the movable contacts of the movable contactors are separated from the inlet side fixed contacts of the fixed contactors, thereby cutting off a current.
  • Hinge shafts are coupled to lower ends of side plates disposed at both side surfaces of the movable contactor.
  • the hinge shafts are rotatably coupled to a bracket, and the movable contactor is angle-rotated centering around the hinge shafts.
  • a load side connection terminal connected to the outlet side fixed contacts of the fixed contactor is coupled to the bracket.
  • the load side connection terminal is connected to the outlet side fixed contacts of the fixed contactor.
  • the hinge shafts are coupled to the side plates of the movable contactor, the number of components of the movable contactor is increased and the number of assembly processes is increased. Accordingly, an assembly productivity is lowered.
  • hinge shafts are additionally fabricated, a production cost for the movable contactor is increased.
  • an object of the present disclosure is to provide a movable contactor for a circuit breaker capable of reducing the number of assembly processes by reducing the number of components, and capable of reducing a production cost.
  • a movable contactor for a circuit breaker comprising: a cage; a plurality of fingers disposed in the cage; a shaft-integrated side plate having a certain area, having a shaft portion protruding from one side thereof with a certain length, and coupled to both side surfaces of the cage thereby covering the fingers; and a bracket to which a load side connection terminal connected to a fixed contactor is coupled, for rotatably inserting the shaft portion of the shaft-integrated side plate.
  • FIG. 1 is a side view showing a part of a circuit breaker to which a movable contactor according to a first embodiment of the present invention is applied;
  • FIG. 2 is a perspective view showing a movable contactor for a circuit breaker according to a first embodiment of the present invention;
  • FIG. 3 is a perspective view showing a shaft-integrated side plateof the movable contactor for a circuit breaker according to a first embodiment of the present invention.
  • a movable contactor D for a circuit breaker comprises a cage 10 having a certain shape; a plurality of fingers 20 coupled to one side of the cage 10 with a predetermined interval therebetween; and a shaft-integrated side plate 40 having a certain area, having a shaft portion 41 protruding from one side thereof with a certain length, and coupled to both side surfaces of the cage 10 thereby covering the fingers 20.
  • a bracket 50 having a certain shape is disposed below the cage 10, and a load side connection terminal 60 is coupled to the bracket 50.
  • the load side connection terminal 60 is connected to an outlet side fixed contacts C2 of a fixed contactor C of the circuit breaker.
  • the fingers 20 and the load side connection terminal 60 are connected to one another by lead wires (not shown).
  • the bracket 50 includes a lower portion 51 having a certain width and length; side portions 52 curvedly-extending from both ends of the lower portion 51; and shaft inserting grooves 53 formed at the side portions 52.
  • the shaft inserting groove is formed in a sphere shape of which one side is opened.
  • the load side connection terminal 60 is coupled to the lower portion 51 of the bracket 50 by bolts 61.
  • the shaft portion 41 of the shaft-integrated side plate 40 is rotatably inserted into the shaft inserting groove 53.
  • a through hole is formed in the shaft portion 41 of the shaft-integrated side plate 40.
  • the shaft portion 41 has a ring-shaped section having a certain thickness.
  • the shaft-integrated side plate 40 includes a base portion 42 having a certain thickness and area, a plurality of engaging holes 43 penetratingly formed at the base portion 42, and a shaft portion 41 extending from a lower portion of the base portion 42 with a certain length.
  • a through hole 44 is penetratingly formed in the shaft portion 41.
  • the through hole 44 is formed to have a curved edge.
  • the shaft portion 41 has a ring-shaped section having a certain thickness.
  • the shaft portion 41 has a thickness thinner than that of the base portion 42.
  • the shaft portion 41 of the shaft-integrated side plate 40 is formed by protruding a part of the base portion 42. More concretely, as shown in FIG. 5, a part of the base portion 42 is pressed to be protruded as a semi-sphere shape. Then, a central portion of the protruded portion is punched thereby to form a through hole. Then, the protruded portion is pushed thus to form the shaft portion 41 protruding with a predetermined outer diameter and length.
  • the shaft-integrated side plate 40 is respectively coupled to both sides of the cage 10 by bolts 11.
  • the bolts 11 are respectively inserted into the engaging holes 43 thus to be coupled to the cage 10.
  • the shaft portion 41 of the shaft-integrated side plate 40 is outwardly disposed.
  • a lower portion of the cage 10 and the shaft-integrated side plate 40 are disposed in the bracket 50.
  • the shaft portion 41 of the shaft-integrated side plate 40 is rotatably inserted into the shaft inserting groove 53 of the bracket 50.
  • a connecting unit B connected to a driving unit A of the circuit breaker is provided at one side of the cage 10.
  • the connecting unit B is disposed at an opposite side to the fingers 20.
  • a contact terminal 30 of the movable contactor come in contact with the inlet side fixed contacts C1 of the fixed contactor C.
  • the power is supplied to the finger 20, the lead wire, and the load side connection terminal 60 via the inlet side fixed contacts C1.
  • the power supplied to the load side connection terminal 60 is provided to a load unit (not shown) through the outlet side fixed contacts C2 of the fixed contactor C.
  • the driving unit A pulls the connecting unit B.
  • the movable contactor D is angle-rotated centering around the shaft portion 41 of the shaft-integrated side plate 40.
  • the contact terminals 30 respectively coupled to the fingers 20 are separated from the inlet side fixed contacts C1 of the fixed contactors C. Accordingly, the abnormal current is prevented from flowing to the load unit.
  • the shaft portion 41 of the movable contactor D that serves as a rotating axis is formed by protruding a part of the shaft-integrated side plate 40. Accordingly, the number of components of the movable contactor D is reduced. As a result, a production cost for the movable contactor D is reduced thereby to enhance a price competitiveness.
  • the shaft portion 41 is formed by protruding a part of the shaft-integrated side plate 40, the shaft-integrated side plate 40 has a decreased weight.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
EP07019935.1A 2006-10-17 2007-10-11 Bewegliche Kontaktanordnung für einen Leistungsschalter Active EP1914767B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020060027975U KR200437069Y1 (ko) 2006-10-17 2006-10-17 기중차단기의 가동접촉자

Publications (2)

Publication Number Publication Date
EP1914767A1 true EP1914767A1 (de) 2008-04-23
EP1914767B1 EP1914767B1 (de) 2015-04-08

Family

ID=39334470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07019935.1A Active EP1914767B1 (de) 2006-10-17 2007-10-11 Bewegliche Kontaktanordnung für einen Leistungsschalter

Country Status (6)

Country Link
EP (1) EP1914767B1 (de)
KR (1) KR200437069Y1 (de)
CN (1) CN101165832A (de)
ES (1) ES2541539T3 (de)
MY (1) MY162275A (de)
RU (1) RU2343582C1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103745896A (zh) * 2013-12-23 2014-04-23 上海良信电器股份有限公司 一种断路器的动触头系统
EP3098831A1 (de) * 2015-05-28 2016-11-30 Schneider Electric Industries SAS Mobiler pol und schneidegerät

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2447370T3 (es) * 2009-12-29 2014-03-11 Abb Technology Ag Disyuntor de media tensión
CN110473750B (zh) * 2018-05-11 2024-05-14 上海电器股份有限公司人民电器厂 一种低压断路器的改进触头系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225207A1 (de) 1985-10-31 1987-06-10 Merlin Gerin Kinematische Übertragungskette zwischen dem Steuermechanismus und den Polen eines elektrischen Lastschalters mit einem gespritzten Isoliergehäuse
US5210385A (en) 1989-07-26 1993-05-11 Merlin Gerin Low voltage circuit breaker with multiple contacts for high currents
US5367276A (en) * 1993-10-18 1994-11-22 General Electric Method case circuit breaker movable contact arm arrangement
EP1098343A1 (de) * 1999-11-03 2001-05-09 AEG Niederspannungstechnik GmbH & Co. KG Drehkontaktanordnung für Schutzschalter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0225207A1 (de) 1985-10-31 1987-06-10 Merlin Gerin Kinematische Übertragungskette zwischen dem Steuermechanismus und den Polen eines elektrischen Lastschalters mit einem gespritzten Isoliergehäuse
US5210385A (en) 1989-07-26 1993-05-11 Merlin Gerin Low voltage circuit breaker with multiple contacts for high currents
US5367276A (en) * 1993-10-18 1994-11-22 General Electric Method case circuit breaker movable contact arm arrangement
EP1098343A1 (de) * 1999-11-03 2001-05-09 AEG Niederspannungstechnik GmbH & Co. KG Drehkontaktanordnung für Schutzschalter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103745896A (zh) * 2013-12-23 2014-04-23 上海良信电器股份有限公司 一种断路器的动触头系统
CN103745896B (zh) * 2013-12-23 2017-01-04 上海良信电器股份有限公司 一种断路器的动触头系统
EP3098831A1 (de) * 2015-05-28 2016-11-30 Schneider Electric Industries SAS Mobiler pol und schneidegerät
US20160352084A1 (en) * 2015-05-28 2016-12-01 Schneider Electric Industries Sas Mobile pole and cutting device
FR3036841A1 (fr) * 2015-05-28 2016-12-02 Schneider Electric Ind Sas Pole mobile et appareil de coupure
US10056741B2 (en) 2015-05-28 2018-08-21 Schneider Electric Industries Sas Mobile pole and cutting device

Also Published As

Publication number Publication date
EP1914767B1 (de) 2015-04-08
ES2541539T3 (es) 2015-07-21
MY162275A (en) 2017-05-31
CN101165832A (zh) 2008-04-23
RU2343582C1 (ru) 2009-01-10
KR200437069Y1 (ko) 2007-11-02

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