WO2004053911A1 - Disjoncteur a air - Google Patents

Disjoncteur a air Download PDF

Info

Publication number
WO2004053911A1
WO2004053911A1 PCT/JP2002/012846 JP0212846W WO2004053911A1 WO 2004053911 A1 WO2004053911 A1 WO 2004053911A1 JP 0212846 W JP0212846 W JP 0212846W WO 2004053911 A1 WO2004053911 A1 WO 2004053911A1
Authority
WO
WIPO (PCT)
Prior art keywords
spring
contact
closing
panel
circuit breaker
Prior art date
Application number
PCT/JP2002/012846
Other languages
English (en)
Japanese (ja)
Inventor
Hideya Wakabayashi
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
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 Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to JP2004558365A priority Critical patent/JP4134987B2/ja
Priority to KR1020047014154A priority patent/KR100641863B1/ko
Priority to PCT/JP2002/012846 priority patent/WO2004053911A1/fr
Priority to CNB028273176A priority patent/CN1282209C/zh
Priority to TW091135782A priority patent/TW579533B/zh
Publication of WO2004053911A1 publication Critical patent/WO2004053911A1/fr

Links

Classifications

    • 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
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • 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
    • H01H33/42—Driving mechanisms

Definitions

  • the present invention relates to an open / close mechanism of an air circuit breaker, and more particularly to an air circuit breaker which is operated by opening force of a panel accumulated when the circuit breaker is turned on.
  • FIG. 6 is a side cross-sectional view of a conventional air circuit breaker described in, for example, Japanese Patent Application Laid-Open No. HEI 3-2-133434.
  • a housing 1 is formed from an insulating material, and a fixed conductor 2 is attached to the inner bottom of the housing 1.
  • a fixed contact 2a is fixed to one end of the fixed conductor 2, and the other end is led out to the outside of the housing 1 to form a power supply terminal 2b.
  • a movable contact 3a is fixed to the mover 3, and the movable contact 3a is separated from and connected to the fixed contact 2a by the rotation of the mover 3.
  • the mover 3 is rotatably supported by a contact arm 4, and the contact arm 4 is supported by a contact arm shaft 5 fixed to the housing 1.
  • the mover 3 is connected to the terminal conductor 7 by a flexible conductor 6 so as to be conductive and flexible.
  • the terminal conductor 7 is fixed to the housing 1 and led out to the outside of the housing 1 to form the power supply terminal 7a. Further, the mover 3 is urged in the opening direction by the contact pressure panel 8.
  • the contact arm 4 is connected via a shaft 9 to an opening / closing mechanism 10 comprising a well-known toggle link mechanism.
  • the shaft 9 supports the mover 3 in a swingable manner.
  • the opening / closing mechanism 10 turns the movable element 3 to move the movable contact 3a and the fixed contact 2a apart to turn on / off the energization of the air circuit breaker.
  • the opening / closing mechanism 10 In the normal ON state, the opening / closing mechanism 10 is latched by a latch (not shown) associated with the trip relay section 11 and maintains the ON state. However, when the trip relay section 11 detects an overcurrent or an excessive current due to an accident or the like, the latch is disengaged, and the opening / closing mechanism 10 is turned off.
  • the OFF operation is driven by the force of the contact pressure panel 8 and the electromagnetic force, but the closing operation is performed by releasing the energy stored in the springs 12.
  • the closing spring 12 is compressed and stored by the pressure storage means of the ratchet cam mechanism 14 by the handle 13 or a motor (not shown).
  • the contact pressure spring 8 that urges the mover 3 in the separating direction, move the mover 3, and bring the movable contact 3a into contact with the fixed contact 2a.
  • the contact pressure spring 8 uses a normal coil spring wound at an equal pitch, the amount of movement of the panel end and the generated reaction force are in a proportional relationship.
  • the movable element 3 in the opened state remains at the position where the contact pressure panel 8 is slightly compressed, and a certain amount of pressing force is required at the time of the initial compression movement.
  • the todal link in the initial stage of the closing operation is in a state where each link is bent, and the component force in the direction required to shift the mover 3 to the on state among the forces released from the closing springs 12 is small. .
  • the input panel 12 is made to be much stronger in order to secure the pressing force at the time of initial movement.
  • the release of the input panel 12 is terminated by the collision of the spring pin 15 with the end of the guide hole 16.
  • the entire mechanism including the housing 1 vibrates due to the impact force at this time, There is also a problem that a latch (not shown) that engages with the release relay section 11 is released and a mistrip that does not turn on the contact occurs.
  • the present invention has been made in order to solve the above-mentioned problems, and by reducing the size of the input panel of the input operating force source and reducing the stress load, the mechanism life can be stabilized for a long time, and after the contact is turned on.
  • An object of the present invention is to obtain a highly reliable air circuit breaker that maintains the contact pressure between contacts by a contact pressure panel and satisfies the electrical characteristics when energized. Disclosure of the invention
  • An air circuit breaker includes an opening / closing mechanism including a toggle link mechanism for automatically opening and closing a movable element to which a movable contact is fixed and for turning a movable contact on and off to a fixed contact, and a link node of the toggle link mechanism.
  • a closing spring that presses and moves on by the force of release and a pressure accumulator that stores the closing panel.In the off state, the mover is urged in the direction to separate from the fixed contact.In the on state, the movable contact is fixed.
  • a contact pressure panel made of a non-linear panel for applying a contact pressure to a contact point.
  • the closing spring is also a non-linear panel.
  • FIG. 1 is a side sectional view of an air circuit breaker according to the present invention.
  • FIG. 2 is a side view of the nonlinear contact pressure panel of the present invention.
  • FIG. 3 is a graph showing the relationship between the input panel, the force of the contact pressure panel, and the stroke according to the first embodiment of the present invention.
  • FIG. 4 is a side sectional view of an essential part for explaining closing of the air circuit breaker.
  • FIG. 5 is a graph showing the relationship between the input panel, the force of the contact pressure panel, and the stroke according to Embodiment 2 of the present invention.
  • FIG. 6 is a side sectional view of a conventional air circuit breaker. BEST MODE FOR CARRYING OUT THE INVENTION
  • Embodiment 1 of the present invention will be described with reference to FIGS.
  • the contact pressure spring 18 is a non-linear panel as shown in Fig. 2 and the winding pitch is made unequal, so that the relationship between the compression movement distance and the repulsive force is not proportional as shown in Fig. 3, and the panel constant is Is small at the initial position S of the stroke and increases toward the final position L of the stroke.
  • the release spring P1 of the input panel 12 is divided by the todal link into the input component force P2 required to move the mover 3. .
  • This input component force P2 needs to be larger than the total reaction force of the plurality of contact pressure springs 18.
  • the contact pressure spring 18 several poles of the air circuit breaker or an integral multiple thereof are arranged in parallel, and usually 3 to 12 pieces are mounted.
  • the contact pressure panel 18 By making the contact pressure panel 18 a non-linear panel, the reaction force F at the time of initial operation can be reduced compared to the conventional contact pressure panel 8. Although the reaction force of each contact pressure panel 18 is small, the total reaction force F is several times larger and is reduced accordingly, and the input panel 12 can be made smaller and weaker. Since the contact pressure panel 18 is made a non-linear panel to reduce the reaction force F at the time of the initial movement of the injection, the stress load on the input panel 12 is correspondingly reduced and the mechanical strength life can be extended.
  • Embodiment 2 Embodiment 2
  • FIG. 5 is a graph showing a relationship between a force of a closing spring and a contact pressure panel and a stroke according to the second embodiment of the present invention.
  • both the contact pressure spring and the input panel are non-linear springs.
  • the mechanism configuration is the same as in FIGS. 1 and 4 of the first embodiment, and a description thereof will be omitted.
  • a desired panel force can be obtained at the time of initial operation of the injection and at the completion of the injection by setting the injection spring 12 to a non-linear panel.
  • the non-linear contact pressure panel and the non-linear input spring are coil springs with unequally spaced winding pitches.
  • a spring may be used.
  • the air circuit breaker according to the present invention urges the mover in the direction of separating from the fixed contact in the off state, and fixes the movable contact in the on state. Since the contact pressure panel that applies contact pressure to the contact is a non-linear panel, the input panel of the input operating force source can be made smaller and the stress load can be reduced, and the long life of the input panel mechanism can be stabilized. Peel off.
  • the input panel is released and the collision energy at the completion of input is reduced, the impact force is reduced, and the occurrence of mistrip due to the latch disengagement due to the impact can be reduced. Is prevented. This is also effective in reducing the power consumption of the motor that accumulates pressure in the input panel.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

La présente invention concerne un disjoncteur à air dans lequel la taille d'un ressort conçu pour fermer le disjoncteur à air par libération de pression accumulée est réduite, une charge de contrainte excessive est évitée, la durée de vie s'agissant de la résistance mécanique du ressort de fermeture est prolongée, et un déclenchement inapproprié est empêché par réduction de la force de choc d'un ressort au moment de la fermeture. Ce disjoncteur à air comporte à un mécanisme de commutation (10) constitué d'un mécanisme à genouillère conçu pour activer/désactiver un contact par ouverture/fermeture d'un élément mobile (3) en cours d'oscillation, un ressort de fermeture (12) conçu pour déplacer l'élément mobile (3) de manière à l'activer par libération de pression accumulée et compression du joint de liaison du mécanisme à genouillère, et un ressort (18) conçu pour forcer le déplacement de l'élément mobile (3) dans une sens d'ouverture à l'état d'inactivation, et appliquer une pression de contact entre les deux contacts à l'état d'activation, ledit ressort de contact à pression (18) comprenant un ressort non linéaire. Lorsqu'un ressort non linéaire est également utilisé en tant que ressort de fermeture (12), la force de choc de fermeture est réduite et un déclenchement inapproprié peut être évité.
PCT/JP2002/012846 2002-12-09 2002-12-09 Disjoncteur a air WO2004053911A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2004558365A JP4134987B2 (ja) 2002-12-09 2002-12-09 気中遮断器
KR1020047014154A KR100641863B1 (ko) 2002-12-09 2002-12-09 기중차단기
PCT/JP2002/012846 WO2004053911A1 (fr) 2002-12-09 2002-12-09 Disjoncteur a air
CNB028273176A CN1282209C (zh) 2002-12-09 2002-12-09 空气断路器
TW091135782A TW579533B (en) 2002-12-09 2002-12-11 Air circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2002/012846 WO2004053911A1 (fr) 2002-12-09 2002-12-09 Disjoncteur a air

Publications (1)

Publication Number Publication Date
WO2004053911A1 true WO2004053911A1 (fr) 2004-06-24

Family

ID=32500602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/012846 WO2004053911A1 (fr) 2002-12-09 2002-12-09 Disjoncteur a air

Country Status (5)

Country Link
JP (1) JP4134987B2 (fr)
KR (1) KR100641863B1 (fr)
CN (1) CN1282209C (fr)
TW (1) TW579533B (fr)
WO (1) WO2004053911A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010080412A (ja) * 2008-09-29 2010-04-08 Hitachi Ltd 電力用ガス遮断器

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100807546B1 (ko) * 2006-10-17 2008-02-29 엘에스산전 주식회사 기중 차단기 및 그에 사용되는 링크
KR100798339B1 (ko) * 2006-10-17 2008-01-28 엘에스산전 주식회사 기중차단기용 개폐기구의 투입 스프링 어셈블리
KR100876408B1 (ko) * 2007-07-12 2008-12-31 엘에스산전 주식회사 기계적 트립 표시 기구를 갖는 기중 차단기
CN102169779B (zh) * 2011-01-30 2014-06-11 湖北盛佳电器设备有限公司 具有自锁功能的框架式断路器
CN103000393B (zh) * 2011-09-15 2014-11-05 西门子公司 开关装置的联动组件及其开关装置
JP6858881B2 (ja) * 2017-10-20 2021-04-14 三菱電機株式会社 遮断器
KR102107621B1 (ko) * 2018-01-31 2020-06-01 엘에스일렉트릭(주) 전력 차단장치
KR20230040537A (ko) * 2021-09-16 2023-03-23 엘에스일렉트릭(주) 기중 차단기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150237U (ja) * 1982-04-02 1983-10-08 株式会社日立製作所 抵抗接点付きしや断器
JPH03201334A (ja) * 1989-12-26 1991-09-03 Mitsubishi Electric Corp 遮断器
JPH05303930A (ja) * 1992-02-26 1993-11-16 Mitsubishi Electric Corp 回路遮断器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58150237U (ja) * 1982-04-02 1983-10-08 株式会社日立製作所 抵抗接点付きしや断器
JPH03201334A (ja) * 1989-12-26 1991-09-03 Mitsubishi Electric Corp 遮断器
JPH05303930A (ja) * 1992-02-26 1993-11-16 Mitsubishi Electric Corp 回路遮断器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010080412A (ja) * 2008-09-29 2010-04-08 Hitachi Ltd 電力用ガス遮断器
JP4634493B2 (ja) * 2008-09-29 2011-02-16 株式会社日立製作所 電力用ガス遮断器

Also Published As

Publication number Publication date
TW200410278A (en) 2004-06-16
TW579533B (en) 2004-03-11
CN1282209C (zh) 2006-10-25
JPWO2004053911A1 (ja) 2006-04-13
CN1615532A (zh) 2005-05-11
JP4134987B2 (ja) 2008-08-20
KR100641863B1 (ko) 2006-11-03
KR20040091710A (ko) 2004-10-28

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