WO1999010906A1 - Disjoncteur - Google Patents

Disjoncteur Download PDF

Info

Publication number
WO1999010906A1
WO1999010906A1 PCT/JP1998/001155 JP9801155W WO9910906A1 WO 1999010906 A1 WO1999010906 A1 WO 1999010906A1 JP 9801155 W JP9801155 W JP 9801155W WO 9910906 A1 WO9910906 A1 WO 9910906A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
spring
holding
acceleration
circuit breaker
Prior art date
Application number
PCT/JP1998/001155
Other languages
English (en)
Japanese (ja)
Inventor
Hiroaki Hashimoto
Masaaki Takayanagi
Masaki Nakagawa
Kenichi Ookubo
Original Assignee
Hitachi, 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 Hitachi, Ltd. filed Critical Hitachi, Ltd.
Priority to JP51414999A priority Critical patent/JP3497866B2/ja
Priority to KR1020007001955A priority patent/KR100326725B1/ko
Publication of WO1999010906A1 publication Critical patent/WO1999010906A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • 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

Definitions

  • the present invention relates to a circuit breaker, and more particularly to a circuit breaker suitable for electric power.
  • a circuit breaker As a conventional circuit breaker, a circuit breaker is engaged with a tripping spring, which is rotatably supported and rotated by receiving a driving force of the spring, when the circuit breaker is closed.
  • a circuit breaker which includes an electromagnet that operates so as to release the engagement, and a force applying unit that increases a force applied to a trigger lever during a breaking operation. For example, there is one disclosed in Japanese Patent Application Laid-Open No. Hei 9-218181.
  • This circuit breaker trips the drive force of the cut-off spring in the closed state and holds it with a multi-stage lever such as a lever, holding lever, and trigger lever.
  • the purpose is to reduce the time required to release the engagement between the trigger lever and the holding lever by using the moment of force from the force piston.
  • the conventional breaker does not relate to the shortening of the release time in the engagement between the retaining lever and the trip lever, which require the shortest release time. Is not enough.
  • the present invention provides a shut-off spring, a trip lever that is rotatably supported and is rotated by the driving force of the shut-off spring, and a trip lever that is rotatably supported and the trip lever is turned into the breaker.
  • a circuit breaker comprising: a holding lever that is engaged and held in a state; and an electromagnet that operates to release the engagement between the bow 1 release lever and the holding lever during a breaking operation.
  • An accelerating spring for applying a force to the holding lever in a direction in which the engagement with the trip lever is released is provided.
  • the direction of the pressing force applied to a portion of the trip lever held by the holding lever in engagement with the holding lever is set to be substantially the center of rotation of the holding lever.
  • the holding lever is formed in a substantially L-shape, the center portion thereof is rotatably supported, the trip lever is engaged with one end of the holding lever, and the acceleration spring is mounted.
  • the accelerating spring is formed inside the other end of the holding lever and formed of a compression coil spring. Further, the accelerating spring is formed of a compression coil spring and contacts the holding lever.
  • a plate is mounted on the side to be in contact with, as an acceleration spring operating mechanism, an acceleration spring lever rotatably supported, and a rod for connecting the acceleration spring lever to the plate through the acceleration spring.
  • the acceleration spring is formed by a compression coil spring, and a plate is mounted on a side that comes into contact with the holding lever.
  • the acceleration spring lever rotatably supported as an acceleration spring operating mechanism. And a rod for connecting the acceleration spring lever to the plate through the acceleration spring.
  • FIG. 1 is a configuration diagram showing a closed state of a circuit breaker control unit of the circuit breaker of the present invention.
  • FIG. 2 is a configuration diagram of the tripping lever operating device of the circuit breaker of the present invention at the start of a breaking operation.
  • FIG. 3 is a configuration diagram showing a closed state of the circuit breaker of the present invention.
  • FIG. 4 is a configuration diagram of the circuit breaker of the present invention during a breaking operation.
  • the main contact 1 of the interrupting section is closed as shown in FIG. 3 in the closed state, and is opened as shown in FIG. 4 in the interrupted state.
  • the cut-off spring 2 is formed by a coil spring, and is constantly urged in the direction of arrow F in a charged state.
  • the driving force F of the shut-off spring 2 is transmitted to the link 7 via drive mechanisms such as the lever 3, the links 4, 5 and the lever 6.
  • the link 7 is provided with a force E in the pulling direction of the driving force in the closed state.
  • One end of the bow I release lever 8 is rotatably supported by a pin 9, and a rotational moment D is given by a link 7.
  • the holding lever 11 is formed in a substantially L-shape, and its center is rotatably supported by the pin 13.
  • the pin 10 is engaged with the roller 10 so that a force toward the center of the pin 13 is applied.
  • the direction of the contact load is desirably within the range of the shaft diameter of the pin 13.
  • the holding lever 1 return spring 14 is always in contact with the lower surface of the horizontal portion of the holding lever 11 and operates so as to always elastically urge the holding lever 11 counterclockwise to return to the closed state.
  • An acceleration spring 15 using a compression coil spring as the elastic urging member is disposed to face the upper surface of the horizontal portion of the holding lever 11.
  • the spring force of the acceleration spring 15 is set to be larger than the spring force of the holding lever return spring 14.
  • a plate 16 that presses the holding lever 11 is attached to one end of the holding lever 11 that holds the acceleration spring 15.
  • the plate 16 is connected to the acceleration spring lever 18 via a rod 17.
  • the rod 17 passes through the acceleration spring 15.
  • the accelerating spring lever 18 has one end rotatably supported by a pin 19 and the other end engaged with the roller 32 of the reset lever 31.
  • the reset lever 31 has one end The other end is locked by the trip hook 20 in the closed state, and the roller 32 engages with the notched surface of the reset cam 35 during the shut-off operation. I have.
  • the center of the trip hook 20 is rotatably supported by the pin 21, one end is engaged with the reset lever 31 in a closed state, and the other end faces the plunger 23 a of the electromagnet 23. are doing.
  • the electromagnet 23 is attached to the housing 51, and its plunger 23a extends through the housing 51 to the upper surface of the other end of the trip hook 20.
  • the accumulating state of the acceleration spring 15 is released, and the acceleration spring 15 presses the upper surface of the horizontal portion of the holding lever 11 via the plate 16. Since the spring force of the acceleration spring 15 is set to be greater than the spring force of the holding lever return spring 14, the spring force of the holding lever return spring 14 is overcome and the holding lever 1 Rotate in the direction of arrow C around.
  • the holding lever 11 rotates, the engagement between the holding lever 11 and the roller 10 is released, and the tripping lever 8 is moved in the direction of arrow D around the pin 9 by the driving force of the shut-off spring 2.
  • link 7 moves in the direction of arrow E.
  • the drive mechanism shifts from the state of FIG. 3 to the state of FIG. That is, the breaking spring 2 starts releasing in the direction of arrow F, and the breaking section main contact 1 opens. Thereafter, by rotating the reset cam 35 clockwise, the state shown in FIG. 1 can be returned.
  • the spring force of the accelerating spring 15 accumulated during the breaking operation is Is applied to the holding lever 11, so that the time for releasing the engagement between the holding lever 11 and the roller 10 can be reduced. This can speed up the breaking operation of the entire circuit breaker.
  • the holding lever 11 is formed in a substantially L-shape to rotatably support a central portion thereof, and a trip lever 8 is engaged with a tip of one side of the holding lever 11 to engage the acceleration lever. Since the spring 15 is formed by a compression coil spring and the acceleration spring 15 is arranged inside the other end of the holding lever 11, acceleration is performed by using the extra space formed by the holding lever 11. The spring 15 can be stored, and the circuit breaker can be downsized.
  • an acceleration spring lever 18 rotatably supported on one side and held on the other side, and a central portion of the acceleration spring lever 18 is connected to a plate 16. Since the acceleration spring 15 is provided with the rod 17, the acceleration spring 15 is held by the leverage principle of the acceleration spring lever 18, and can be held with a small force. Also, as an acceleration spring operating mechanism, a reset lever 31 that is rotatably supported and engages the acceleration spring lever 18 and a reset lever 31 that is located farther from the engagement portion of the acceleration spring lever 18 And the release hook 20 which is released by the electromagnet 23 and is released by the electromagnet 23.Therefore, the force required to lock the reset lever 31 with the release hook 20 by the leverage principle may be small. 23 The required electromagnetic force can be reduced. As a result, the acceleration spring operating mechanism can be made inexpensive.
  • the disengagement time between the holding lever and the trip lever can be shortened, and the breaking operation of the entire circuit breaker can be performed at a high speed.
  • An inexpensive circuit breaker can be obtained.
  • the present invention can be embodied in various other forms without departing from the spirit or main characteristics. As such, the preferred embodiments described herein are illustrative and not limiting. The scope of the invention is indicated by the appended claims, and all modifications that come within the meaning of the claims are intended to be included within the scope of the invention.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

Ce disjoncteur possède un ressort de blocage, un levier de déclenchement soutenu rotatif et tourné par la force d'entraînement du ressort de blocage, un levier de maintien soutenu rotatif et bloquant le levier de déclenchement à l'état fermé du disjoncteur, un ressort de rappel du levier de maintien, appliquant une force sur ce dernier de manière à le rappeler pour le mettre à l'état fermé, ainsi qu'un électro-aimant fonctionnant de manière à désaccoupler le levier de déclenchement et le levier de maintien lors du processus de coupure. On a monté un ressort d'accélération qui déplace le levier de maintien, dans le sens de suppression du couplage entre le levier de maintien et le levier de déclenchement, et on a monté un mécanisme de commande de ce ressort, lequel mécanisme maintient le ressort dans un état de stockage d'énergie ou libère ce ressort de cet état. Ainsi, on peut réduire le temps requis pour désaccoupler le levier de maintien et le levier de déclenchement, ce qui permet d'obtenir un disjoncteur qui fonctionne à grande vitesse et est, de surcroît, de dimension et de coût réduits.
PCT/JP1998/001155 1997-08-26 1998-03-18 Disjoncteur WO1999010906A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP51414999A JP3497866B2 (ja) 1997-08-26 1998-03-18 遮断器
KR1020007001955A KR100326725B1 (ko) 1997-08-26 1998-03-18 차단기

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP22909397 1997-08-26
JP9/229093 1997-08-26

Publications (1)

Publication Number Publication Date
WO1999010906A1 true WO1999010906A1 (fr) 1999-03-04

Family

ID=16886652

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1998/001155 WO1999010906A1 (fr) 1997-08-26 1998-03-18 Disjoncteur

Country Status (3)

Country Link
JP (1) JP3497866B2 (fr)
KR (1) KR100326725B1 (fr)
WO (1) WO1999010906A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007044475B4 (de) * 2006-09-29 2011-01-27 Kabushiki Kaisha Toshiba Schaltvorrichtung und Schaltvorrichtungsbetriebsmechanismus
US8330065B2 (en) 2007-07-27 2012-12-11 Kabushiki Kaisha Toshiba Switchgear and switchgear operating mechanism
US8420969B2 (en) 2008-03-28 2013-04-16 Kabushiki Kaisha Toshiba Switchgear and switchgear operating mechanism
JP2022164630A (ja) * 2021-04-15 2022-10-27 イートン インテリジェント パワー リミテッド 作動機構

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3824499B2 (ja) * 2001-04-20 2006-09-20 富士通株式会社 弾性表面波共振子及び弾性表面波フィルタ
JP5722063B2 (ja) * 2011-01-31 2015-05-20 株式会社東芝 開閉装置および開閉装置操作機構
JP2013065480A (ja) 2011-09-20 2013-04-11 Toshiba Corp 開閉装置の操作機構、及び開閉装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5741212U (fr) * 1980-08-20 1982-03-05
JPH048220U (fr) * 1990-04-28 1992-01-24
JPH04206118A (ja) * 1990-11-29 1992-07-28 Toshiba Corp 遮断器の操作機構
JPH09180593A (ja) * 1995-12-26 1997-07-11 Toshiba Corp 遮断器用電動ばね操作機構

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5741212U (fr) * 1980-08-20 1982-03-05
JPH048220U (fr) * 1990-04-28 1992-01-24
JPH04206118A (ja) * 1990-11-29 1992-07-28 Toshiba Corp 遮断器の操作機構
JPH09180593A (ja) * 1995-12-26 1997-07-11 Toshiba Corp 遮断器用電動ばね操作機構

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007044475B4 (de) * 2006-09-29 2011-01-27 Kabushiki Kaisha Toshiba Schaltvorrichtung und Schaltvorrichtungsbetriebsmechanismus
US8330065B2 (en) 2007-07-27 2012-12-11 Kabushiki Kaisha Toshiba Switchgear and switchgear operating mechanism
US8420969B2 (en) 2008-03-28 2013-04-16 Kabushiki Kaisha Toshiba Switchgear and switchgear operating mechanism
JP2022164630A (ja) * 2021-04-15 2022-10-27 イートン インテリジェント パワー リミテッド 作動機構
JP7329655B2 (ja) 2021-04-15 2023-08-18 イートン インテリジェント パワー リミテッド 作動機構

Also Published As

Publication number Publication date
JP3497866B2 (ja) 2004-02-16
KR100326725B1 (ko) 2002-03-12
KR20010023320A (ko) 2001-03-26

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