EP1914777A1 - Luftleistungsschalter und Klinkenhebel dafür - Google Patents

Luftleistungsschalter und Klinkenhebel dafür Download PDF

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Publication number
EP1914777A1
EP1914777A1 EP07019932A EP07019932A EP1914777A1 EP 1914777 A1 EP1914777 A1 EP 1914777A1 EP 07019932 A EP07019932 A EP 07019932A EP 07019932 A EP07019932 A EP 07019932A EP 1914777 A1 EP1914777 A1 EP 1914777A1
Authority
EP
European Patent Office
Prior art keywords
link
circuit breaker
air circuit
coupled
members
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.)
Pending
Application number
EP07019932A
Other languages
English (en)
French (fr)
Inventor
Hong-Ik Yang
Sang-Chul Lee
Ki-Hwan Kim
Kil-Young Ahn
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 EP1914777A1 publication Critical patent/EP1914777A1/de
Pending legal-status Critical Current

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Classifications

    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3026—Charging means in which the closing spring charges the opening spring or vice versa
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/40—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/42—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/30—Power arrangements internal to the switch for operating the driving mechanism using spring motor
    • H01H3/3005—Charging means
    • H01H3/3015—Charging means using cam devices

Definitions

  • the present invention relates to an air circuit breaker, and particularly, to an air circuit breaker capable of improving operation reliability thereof by employing an intensity-enhanced link, and a link used in the air circuit breaker.
  • an air circuit breaker is a device for breaking a circuit when occurring an on/off state of a load, overload, short circuit, power leakage, electric shock, and the like.
  • a related art air circuit breaker may comprise a switching mechanism 102 for switching on and/or off a circuit by moving a movable contact 138 toward a terminal 139.
  • the switching mechanism 102 may comprise: a cam 122 connected to a rotational shaft 121 to be rotated automatically or manually; a driving lever 124 rotatably disposed at a frame 109 which supports both sides of the switching mechanism 102 and having a lever roller 123 so as to be rotated when the lever roller 123 is rotated along a curved surface of the cam 122 by the rotation of the cam 122; a closing spring 125 having one end connected to a lower end portion of the driving lever 124 and the other end supported at the frame 109 to accumulate elastic energy generated by being compressed when the driving lever 124 is rotated by the rotation of the cam 122; a first latch 127 extending longitudinally to be elastically disposed at the frame 109 and having a particular recess at its lower side surface so as to be restrained when a
  • the first link 129 as shown in Fig. 4, comprises: a first portion 151 coming in contact with the latch roller 130 of the second latch 131 and having the recess 149 by which the latch roller 130 is restrained; a second portion 152 extending from the first portion in a curved state and having an insertion hole 161 in which the rotational shaft 121 is inserted so as to be supported at the rotational shaft 121; and a third portion 153 extending downwardly from the second portion 152 and having a connection hole 162 to be connected to the driving lever 124.
  • a stopper 142 disposed below the third portion 153 of the first link 129 for preventing the first link 129 from being rotated over a particular displacement when the air circuit breaker performs its breakage operation is supported at the frame 109.
  • the related art air circuit breaker having such configuration may perform a charging operation of accumulating elastic energy in the closing spring 125, a closing operation of connecting the movable contact 138 onto the terminal 139 by an elastic restoring force of the closing spring 125, and a breakage operation of disconnecting the movable contact 138 from the terminal 139.
  • the first link 129 rotated centering around the rotational shaft 121 according to the rotation of the driving lever 124, and the second latch 131 is restrained as the latch roller 130 of the second latch 131 is locked by the recess 149 of the first link 129.
  • a contact force of the latch roller 130 and a load of the second latch 131 are applied to the first portion 151 of the first link 129.
  • connection pin 141 for connecting the second link 134 to the third link 135 is collided at the second portion 152 of the first link 129. Accordingly, part of a tensile force generated when the closing spring 125 is drastically tensioned and loads of the second and third links 134 and 135 are applied to the second portion 152 of the first link 129.
  • the collision of the first link 129 onto the stopper 142 prevents the rotation of the first link 129 over a particular displacement.
  • a force generated when the first link 129 is collided onto the stopper 142 is applied to the third portion 153 of the first link 129.
  • a method for thickening the first link 129 may be employed in order to bear up against loads or impacts applied onto the first link 129.
  • it increases cost of products.
  • an object of the present invention is to provide an air circuit breaker in which a link, to which great loads are applied during charging operation, closing operation and breakage operation of the air circuit breaker, is configured in a structure that plural members (plates) are coupled to one another so as to prevent abrasion and damage from being occurred on the link the link, whereby operation reliability of the air circuit break can be enhanced, a lifetime thereof can be elongated, and fabrication thereof can be facilitated with low cost.
  • an air circuit breaker comprising: a cam connected to a rotational shaft to be rotated; a driving lever connected to the cam to be rotated; a closing spring connected to the driving lever to be compressed by the rotation of the driving lever; and a plurality of links for transferring a tensile force generated when the closing spring is tensioned to a switching shaft which is connected to a movable contact, wherein at least one of the plurality of links has a structure that plural members are coupled to one another.
  • the object can be achieved by the link of the air circuit breaker which is formed for a plurality of members to be layered with one another, and has a first portion, a second portion extending from the first portion in a curved state and having an insertion hole, and a third portion extending downwardly from the second portion and having a connection hole.
  • any one of coupled points at which the plurality of members implementing the link are coupled to one another is located at the first portion, in order to improve intensity of the link when performing a charging operation of the air circuit breaker.
  • any one of coupled points at which the plurality of members implementing the link are coupled to one another is located at the second portion, in order to improve intensity of the link when performing a closing operation of the air circuit breaker.
  • any one of coupled points at which the plurality of members implementing the link are coupled to one another is located at the third portion, in order to improve intensity of the link when performing a breakage operation of the air circuit breaker.
  • an air circuit breaker may comprise a switching mechanism 2 for opening/closing a circuit by moving a movable contact 38 toward a terminal 39.
  • the switching mechanism 2 may comprise: a cam 22 connected to a rotational shaft 21 to be rotated automatically or manually; a driving lever 23 rotatably disposed at a frame 9 which supports both sides of the switching mechanism 2 and having a lever roller 23 so as to be rotated when the lever roller 23 is operated along a curved surface of the cam 22 by the rotation of the cam 22; a closing spring 25 having one end connected to a lower end portion of the driving lever 24 and the other end supported at the frame 9 so as to accumulate elastic energy generated when being compressed by the rotation of the driving lever 24 in conjunction with the rotation of the cam 22; a first latch 27 extending longitudinally to be elastically installed at the frame 9, and having a particular recess at its lower side surface such that it is restrained when a pin 26 disposed at the cam 22 is locked by the recess;
  • loads or impacts may be applied to a plurality of links for transferring a tensile force generated when the closing spring 25 is tensioned.
  • the plurality of links have a structure that plural members are coupled to one another in order to improve intensity against the loads or impacts.
  • the first link 29 has a structure that a plurality of members are, for example, layered with each other.
  • the first link 29 may comprise a first portion 51 with which the latch roller 30 of the second latch 31 comes in contact and having the recess 49 by which the latch roller 30 is restrained; a second portion 52 extending from the first portion 51 in a curved state and having an insertion hole 61 in which the rotational shaft 21 is inserted so as to be rotatably supported at the rotational shaft 21; and a third portion 53 extending downwardly from the second portion 52 and having a connection hole 62 such that the third portion 53 is connected to the driving lever 24.
  • the first link 29 is configured such that a plurality of members are coupled to each other at plural coupling points 71, 72 and 73 by coupling members 81, 82 and 83, such as rivets or screws.
  • the first link 29 of the present invention may not be limited to this configuration.
  • a plurality of members may be coupled to each other in a manner of a spot welding.
  • one (e.g., 71) of the coupling points 71, 72 and 73 at which a plurality of members configuring the first link 29 are coupled to each other is preferably located at the first portion 51.
  • connection pin 41 for connecting the second link 34 to the third link 35 is collided on the second portion 52 of the first link 29, part of a tensile force generated when the closing spring 25 is drastically tensioned and loads of the second and third links 34 and 35 are applied to the second portion 52 of the first link 29. Accordingly, in order to enhance the intensity of the first link 29, one (e.g., 72) of the coupling points 71, 72 and 73 at which a plurality of members configuring the first link 29 are coupled to each other is preferably located at the second portion 52.
  • one (e.g., 73) of the coupling points 71, 72 and 73 at which a plurality of members configuring the first link 29 are coupled to each other is preferably located at the third portion 53.
  • the air circuit breaker according to the present invention having such configuration may perform a charging operation of accumulating elastic energy in the closing spring 25, a closing operation of connecting the movable contact 38 to the terminal 39 by an elastic restoring force of the closing spring 25, and a breakage operation of disconnecting the movable contact 38 from the terminal 39.
  • an elastic restoring force of the opening spring 37 tensioned when a circuit is broken separates (disconnects) the movable contact 38 from the terminal 39. Accordingly, the movable contact 38 is returned to its original state as shown in Fig. 5.
  • the first link 29 is configured such that the plurality of members are coupled to one another, and thereby the intensity of the first link 29 can be enhanced without thickening the first link 29. Therefore, it is possible to prevent an occurrence of abrasion or damage of the first link 29 caused by loads or impacts applied to each portion of the first link 29 during the charging operation, the closing operation and the breakage operation of the air circuit breaker. Accordingly, it is effective to improve operation reliability of the air circuit breaker and to elongate the lifetime thereof.
  • the coupling points 71, 72 and 73 at which the plurality of members configuring the first link 29 are located at portions to which the loads are applied during the charging operation, the closing operation and the breakage operation of the air circuit breaker. Accordingly, it is effective to appropriately deal with the loads or impacts applied to each portion of the first link 29.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP07019932A 2006-10-17 2007-10-11 Luftleistungsschalter und Klinkenhebel dafür Pending EP1914777A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060101064A KR100807546B1 (ko) 2006-10-17 2006-10-17 기중 차단기 및 그에 사용되는 링크

Publications (1)

Publication Number Publication Date
EP1914777A1 true EP1914777A1 (de) 2008-04-23

Family

ID=38920576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07019932A Pending EP1914777A1 (de) 2006-10-17 2007-10-11 Luftleistungsschalter und Klinkenhebel dafür

Country Status (5)

Country Link
EP (1) EP1914777A1 (de)
KR (1) KR100807546B1 (de)
CN (1) CN101174524B (de)
MY (1) MY154867A (de)
RU (1) RU2357315C1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2204827A3 (de) * 2008-12-31 2013-09-11 LS Industrial Systems Co., Ltd Leistungsschalter mit verzögertem drehbarem Nocken für Feder-Motor
CN104465153A (zh) * 2014-12-23 2015-03-25 贵州长征开关制造有限公司 一种双断点万能式断路器的新型操作机构
CN106449209A (zh) * 2016-12-07 2017-02-22 协成科技股份有限公司 一种操作机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106158532B (zh) * 2015-05-12 2018-08-28 现代电力与能源系统株式会社 断路器
CN105390312B (zh) * 2015-11-06 2018-02-23 平高集团有限公司 一种拐臂及使用该拐臂的弹簧操动机构
CN112382517B (zh) * 2020-11-02 2023-04-28 平高集团有限公司 一种弹簧操动机构合闸系统及弹簧操动机构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB384604A (en) * 1932-07-12 1932-12-08 English Electric Co Ltd Toggle operating mechanism for electrical switchgear
FR2449329A1 (fr) * 1979-02-13 1980-09-12 Tokyo Shibaura Electric Co Mecanisme d'actionnement pour disjoncteurs
US5004875A (en) * 1988-10-11 1991-04-02 Siemens Energy & Automation, Inc. Stored energy contact operating mechanism
US5224590A (en) * 1991-11-06 1993-07-06 Westinghouse Electric Corp. Circuit interrupter having improved operating mechanism
EP0997919A1 (de) * 1998-10-30 2000-05-03 Schneider Electric Industries SA Schaltvorrichtung mit mechanisches Dreistellungsanzeigeorgan
EP1130615A2 (de) * 2000-02-29 2001-09-05 Siemens Aktiengesellschaft Schaltschloss fuer einen Niederspannungs-Leistungsschalter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85107640A (zh) * 1985-10-12 1987-04-15 三菱电机株式会社 电路断路器的弹簧式操作机构
CN2266784Y (zh) * 1996-06-28 1997-11-05 东北电力试验研究院 开关弹簧操作机构
KR100252922B1 (ko) 1997-12-27 2000-05-01 이종수 진공차단기의 접점구동장치
WO2004053911A1 (ja) * 2002-12-09 2004-06-24 Mitsubishi Denki Kabushiki Kaisha 気中遮断器
KR200378090Y1 (ko) 2004-12-22 2005-03-14 현대중공업 주식회사 기중차단기 작동기구

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB384604A (en) * 1932-07-12 1932-12-08 English Electric Co Ltd Toggle operating mechanism for electrical switchgear
FR2449329A1 (fr) * 1979-02-13 1980-09-12 Tokyo Shibaura Electric Co Mecanisme d'actionnement pour disjoncteurs
US5004875A (en) * 1988-10-11 1991-04-02 Siemens Energy & Automation, Inc. Stored energy contact operating mechanism
US5224590A (en) * 1991-11-06 1993-07-06 Westinghouse Electric Corp. Circuit interrupter having improved operating mechanism
EP0997919A1 (de) * 1998-10-30 2000-05-03 Schneider Electric Industries SA Schaltvorrichtung mit mechanisches Dreistellungsanzeigeorgan
EP1130615A2 (de) * 2000-02-29 2001-09-05 Siemens Aktiengesellschaft Schaltschloss fuer einen Niederspannungs-Leistungsschalter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2204827A3 (de) * 2008-12-31 2013-09-11 LS Industrial Systems Co., Ltd Leistungsschalter mit verzögertem drehbarem Nocken für Feder-Motor
CN104465153A (zh) * 2014-12-23 2015-03-25 贵州长征开关制造有限公司 一种双断点万能式断路器的新型操作机构
CN106449209A (zh) * 2016-12-07 2017-02-22 协成科技股份有限公司 一种操作机构
CN106449209B (zh) * 2016-12-07 2018-10-23 协成科技股份有限公司 一种操作机构

Also Published As

Publication number Publication date
CN101174524A (zh) 2008-05-07
CN101174524B (zh) 2010-11-17
RU2357315C1 (ru) 2009-05-27
MY154867A (en) 2015-08-14
KR100807546B1 (ko) 2008-02-29

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