JP2000200536A - Circuit breaker - Google Patents
Circuit breakerInfo
- Publication number
- JP2000200536A JP2000200536A JP10377696A JP37769698A JP2000200536A JP 2000200536 A JP2000200536 A JP 2000200536A JP 10377696 A JP10377696 A JP 10377696A JP 37769698 A JP37769698 A JP 37769698A JP 2000200536 A JP2000200536 A JP 2000200536A
- Authority
- JP
- Japan
- Prior art keywords
- circuit breaker
- tripping
- interlocking
- electromagnetic coil
- contact portion
- 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
Links
Landscapes
- Breakers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本件の発明は回路遮断器に係り、
特に電磁式引きはずし素子を有す回路遮断器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit breaker,
In particular, it relates to a circuit breaker having an electromagnetic trip element.
【０００２】[0002]
【従来の技術】従来このような電磁引外し素子を有する
回路遮断器は、電磁コイルによる連動部材の吸引動作の
回動量と、遮断器の開閉機構部に係合する引外し部材の
係合を引外すのに必要な回動量の関係によって、連動部
材と引外し部材の当接位置が決定される構造となってい
た。連動部材と引外し部材は、共にそれぞれの回転中心
からの距離により、当接位置での回動量および力が決ま
る。一般的には回動量が開閉機構部の係合を引外すのに
十分な余裕が持てる位置に当接するように設計する。図
１にその例を示す。電磁コイル４に電流が流れると、電
磁コイル４周辺の磁性体部材３に磁気回路が形成され
る。電流が設定値以上になると形成された磁気回路の吸
引力により、連動部材２の一端が引外し部材５を押し、
開閉機構部１の係合を引外し開状態とする。したがっ
て、電磁コイルの巻数は、開閉機構部を開状態にするた
めに必要な吸引力を得るために設定されていた。2. Description of the Related Art Conventionally, a circuit breaker having such an electromagnetic tripping element has a structure in which the amount of rotation of a suction operation of an interlocking member by an electromagnetic coil and the engagement of a tripping member engaged with a switching mechanism of the circuit breaker are determined. The structure in which the contact position between the interlocking member and the tripping member is determined depending on the relationship of the amount of rotation required for tripping. Both the interlocking member and the tripping member determine the amount of rotation and the force at the contact position depending on the distance from the center of rotation. Generally, it is designed such that the amount of rotation comes into contact with a position where there is a sufficient margin to release the engagement of the opening / closing mechanism. FIG. 1 shows an example. When a current flows through the electromagnetic coil 4, a magnetic circuit is formed on the magnetic member 3 around the electromagnetic coil 4. When the current exceeds the set value, one end of the interlocking member 2 pushes the tripping member 5 due to the attractive force of the magnetic circuit formed,
The opening and closing mechanism 1 is disengaged to open. Therefore, the number of turns of the electromagnetic coil is set to obtain a suction force necessary to open the opening / closing mechanism.
【０００３】[0003]
【発明が解決しようとする課題】電磁引外し素子を有す
る回路遮断器では、電磁コイルによる吸引動作に連動す
る連動部材と、遮断器の機構部に係合する引外し部材と
の回動量の関係によって、電磁コイルの巻数は設定され
るため、電磁コイルをそれ以上小型化できないといった
問題があった。In a circuit breaker having an electromagnetic tripping element, the relationship between the interlocking member interlocking with the attraction operation by the electromagnetic coil and the amount of rotation between the tripping member engaging with the mechanism of the circuit breaker. Therefore, the number of turns of the electromagnetic coil is set, so that there is a problem that the electromagnetic coil cannot be further reduced in size.
【０００４】そこで本件の発明の目的とするところは、
電磁コイルの巻数を減らして小型化を図り、吸引力を効
率よく開閉機構部の引外し部材に伝達し、係合を引外し
接点を開状態にできる回路遮断器を提供しようとするも
のである。Therefore, the object of the present invention is as follows.
An object of the present invention is to provide a circuit breaker capable of reducing the number of windings of an electromagnetic coil to reduce the size, efficiently transmitting a suction force to a tripping member of an opening / closing mechanism, releasing the engagement and opening a contact. .
【０００５】[0005]
【課題を解決しようとするための手段】上述の目的を達
成するため本件発明では、手動開閉が可能であり、係合
を引外すことで手動閉状態でも開閉機構部に連動する接
点を開とすることができる回路遮断器において、電磁コ
イルによる吸引動作に連動する連動部材を有し、遮断器
の開閉機構部に係合する引外し部材は、前記連動部材と
２段階で当接するように、第１当接部と第２当接部を有
し、第１当接部は第２当接部より前記引外し部材の回転
中心から遠い位置に設けられ、前記連動部材によって第
１当接部を一定量回動させ、次に第２当接部を回動して
遮断器の開閉機構部の係合を引外すような２段階の当接
部を設けた引外し部材を有すものである。In order to achieve the above object, according to the present invention, manual opening / closing is possible, and by releasing the engagement, the contact interlocking with the opening / closing mechanism is opened even in the manual closing state. In the circuit breaker that can be performed, the interlocking member interlocking with the suction operation by the electromagnetic coil, the tripping member that engages with the opening and closing mechanism of the circuit breaker, so as to contact the interlocking member in two stages, A first contact portion and a second contact portion are provided at a position farther from the rotation center of the trip member than the second contact portion, and the first contact portion is provided by the interlocking member. And a tripping member provided with a two-stage contact portion for turning the second contact portion and then tripping the engagement of the opening / closing mechanism of the circuit breaker. is there.
【０００６】[0006]
【作用】本件の発明によれば、電磁コイルの巻数を減ら
して小型化が図れ、吸引力を効率よく引外し部材に伝達
し、係合を引外し接点を開状態にできる回路遮断器を得
られる。According to the present invention, there is provided a circuit breaker which can reduce the number of turns of the electromagnetic coil, reduce the size, efficiently transmit the attraction force to the tripping member, trip the engagement and open the contact. Can be
【０００７】[0007]
【実施例の説明】以下に本件発明を図面を用いて詳細に
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.
【０００８】図２に本発明の回路遮断器の実施例を示
す。９は電磁コイル、６は開閉機構部、８は磁性体部材
である。７は電磁コイルによる吸引動作に連動する連動
部材で磁性体で構成してある。連動部材７が回動する
と、後に記述する引外し部材と当接する構造となってい
る。FIG. 2 shows an embodiment of the circuit breaker of the present invention. 9 is an electromagnetic coil, 6 is an opening / closing mechanism, and 8 is a magnetic member. Reference numeral 7 denotes an interlocking member which interlocks with the attraction operation by the electromagnetic coil and is made of a magnetic material. When the interlocking member 7 rotates, it has a structure in which it comes into contact with a tripping member described later.
【０００９】図２〜図４において、１０は遮断器の開閉
機構部６に係合する引外し部材である。この係合を引外
すことにより遮断器を開状態とすることができる。引外
し部材１０には、連動部材７と当接する第１当接部１１
と第２当接部１２が設けられており、引外し部材１０の
回転中心１６から距離が長い方が第１当接部１１、短い
方が第２当接部１２である。かつ、連動部材７の回転中
心１７から見ると、距離が短い方が第１当接部、距離が
長い方が第２当接部となるように配置されている。連動
部材７が第１当接部１１に接触する位置では、連動部材
７と電磁コイル９の磁気ギャップＬ４が大きいので吸引
力が弱く、第２当接部１２に接触する位置では、連動部
材７と電磁コイル９の磁気ギャップＬ４が小さいので吸
引力が強くなる。2 to 4, reference numeral 10 denotes a tripping member which engages with the switching mechanism 6 of the circuit breaker. By releasing this engagement, the circuit breaker can be opened. A first contact portion 11 that contacts the interlocking member 7 is attached to the trip member 10.
And the second contact portion 12. The longer the distance from the rotation center 16 of the tripping member 10 is the first contact portion 11, and the shorter is the second contact portion 12. Further, when viewed from the rotation center 17 of the interlocking member 7, the first contact portion is disposed at a shorter distance and the second contact portion is disposed at a longer distance. At the position where the interlocking member 7 contacts the first contact portion 11, the magnetic force L <b> 4 between the interlocking member 7 and the electromagnetic coil 9 is large, so that the attractive force is weak. And the magnetic gap L4 of the electromagnetic coil 9 is small, so that the attractive force is increased.
【００１０】電磁コイル９に電流が流れることにより、
電磁コイル９の周辺の磁性体部材８に磁気回路が形成さ
れる。電磁コイル９に設定値以上の電流が流れたとき
に、電磁コイル９による吸引力により連動部材７が回動
し、一端が引外し部材１０の第１当接部１１と当接す
る。図３にその例を示す。この段階では、引外し部材１
０はその回転中心１６から遠い位置で連動部材７によっ
て押されるので、軽い力で回動可能となるとともに、連
動部材７側は回転中心１７から見た時、電磁コイル９の
吸引部までのうでの長さＬ１に対し、第１当接部１１ま
でのうでの長さＬ２が短いため、連動部材７が引外し部
材１０を回動させる力はＬ１／Ｌ２倍に拡大され、磁気
ギャップＬ４が大きく、吸引力が弱くても引外し部材１
０を回動可能となる。When a current flows through the electromagnetic coil 9,
A magnetic circuit is formed on the magnetic member 8 around the electromagnetic coil 9. When a current equal to or greater than the set value flows through the electromagnetic coil 9, the interlocking member 7 rotates due to the attraction force of the electromagnetic coil 9, and one end thereof comes into contact with the first contact portion 11 of the tripping member 10. FIG. 3 shows an example. At this stage, the trip member 1
Since 0 is pushed by the interlocking member 7 at a position far from the rotation center 16, the interlocking member 7 can be rotated with a light force, and the interlocking member 7 side reaches the suction portion of the electromagnetic coil 9 when viewed from the rotation center 17. Since the length L2 of the sheath up to the first contact portion 11 is shorter than the length L1 of the magnetic member, the force by which the interlocking member 7 rotates the tripping member 10 is increased to L1 / L2 times, and the magnetic gap is increased. Even if L4 is large and suction force is weak, trip member 1
0 can be rotated.
【００１１】次に、連動部材７が回動するにつれて、連
動部材７と引外し部材１０の当接位置が第１当接部１１
から第２当接部１２に変化する。図４にその例を示す。
この段階では、引外し部材１０はその回転中心１６から
近い位置で連動部材７によって押され、第１当接部１１
を押す場合に比べ強い力が必要となり、また連動部材７
側も回転中心１７から見た時、電磁コイル９の吸引部ま
でのうでの長さＬ１に比べ、第２当接部１２までのうで
の長さＬ３の方が長くなり、連動部材７が引外し部材１
０を回動させる力はＬ１／Ｌ３倍に低減されるが、磁気
ギャップＬ４が小さいので、連動部材７には、非常に強
い吸引力が発生し、引外し部材１０を引き続き回動し続
ける。また、連動部材７の回動量に対し引外し部材１０
の回動量は相対的に大きくなる。Next, as the interlocking member 7 rotates, the contact position between the interlocking member 7 and the tripping member 10 is changed to the first contact portion 11.
To the second contact portion 12. FIG. 4 shows an example.
At this stage, the tripping member 10 is pushed by the interlocking member 7 at a position close to the rotation center 16 and the first contact portion 11
Requires a greater force than when pressing
When viewed from the rotation center 17, the length L 3 of the sheath up to the second contact portion 12 is longer than the length L 1 of the sheath to the suction portion of the electromagnetic coil 9. Is the tripping member 1
The force for rotating 0 is reduced to L1 / L3 times, but since the magnetic gap L4 is small, a very strong attractive force is generated in the interlocking member 7, and the tripping member 10 continues to rotate. In addition, the trip member 10 is controlled by the amount of rotation of the interlocking member 7.
Is relatively large.
【００１２】つまり、連動部材７と、引外し部材１０の
当接部において、電磁コイル９による連動部材７の吸引
力が弱いときは、連動部材７のモーメントによる力が強
い位置で、引外し部材１０のモーメントによる力が軽い
位置を押し、電磁コイル９による連動部材７の吸引力が
強いときに引外し部材１０のモーメントによる力が強い
位置を押すことになり、電磁コイル９の吸引力が引外し
部材１０に有効に伝達される。したがって、従来の電磁
引外し素子を有する回路遮断器で、引外し部材を引外す
吸引力に余力がなく、電磁コイルの巻数を増やさなけれ
ばならない場合でも、電磁コイルの巻数を増やさずに、
より効率的に開閉機構部の係合を引外すことができる。That is, when the attraction of the interlocking member 7 by the electromagnetic coil 9 is weak at the contact portion between the interlocking member 7 and the tripping member 10, the tripping member is located at a position where the force by the moment of the interlocking member 7 is strong. The force by the moment of 10 pushes the position where the force by the moment is strong, and when the attraction force of the interlocking member 7 by the electromagnetic coil 9 is strong, the position by the force of the moment of the tripping member 10 is pushed. It is effectively transmitted to the removal member 10. Therefore, in a circuit breaker having a conventional electromagnetic tripping element, there is no extra power in the attraction force for tripping the tripping member, and even when the number of turns of the electromagnetic coil needs to be increased, without increasing the number of turns of the electromagnetic coil,
The engagement of the opening / closing mechanism can be more efficiently released.
【００１３】[0013]
【発明の効果】以上のように、請求項１の発明によれ
ば、電磁コイルの小型化が図れ、吸引力を効率よく遮断
器の開閉機構部に係合する引外し部材に伝達し、係合を
引外し開閉機構部を開状態にできる回路遮断器を得られ
る。As described above, according to the first aspect of the present invention, the size of the electromagnetic coil can be reduced, and the suction force can be efficiently transmitted to the tripping member engaged with the switching mechanism of the circuit breaker. It is possible to obtain a circuit breaker capable of tripping and opening the switching mechanism.
【図１】 従来の電磁引外し素子を有する回路遮断器の
例FIG. 1 shows an example of a conventional circuit breaker having an electromagnetic tripping element.
【図２】 本件発明の回路遮断器の例FIG. 2 shows an example of the circuit breaker of the present invention.
【図３】 引外し動作の例１FIG. 3 Example 1 of tripping operation
【図４】 引外し動作の例２[Fig. 4] Example 2 of tripping operation
１ 開閉機構部Ａ ２ 連動部材Ａ ３ 磁性体部材Ａ ４ 電磁コイルＡ ５ 引外し部材Ａ ６ 開閉機構部Ｂ ７ 連動部材Ｂ ８ 磁性体部材Ｂ ９ 電磁コイルＢ １０ 引外し部材Ｂ １１ 第１当接部 １２ 第２当接部 １３ 端子板 １４ 固定接触子 １５ 可動接触子 １６ 引外し部材の回転中心 １７ 連動部材の回転中心 DESCRIPTION OF SYMBOLS 1 Opening / closing mechanism part A 2 Interlocking member A 3 Magnetic member A 4 Electromagnetic coil A 5 Tripping member A 6 Opening / closing mechanism part B 7 Interlocking member B 8 Magnetic member B 9 Electromagnetic coil B 10 Tripping member B 11 First contact Contact part 12 Second contact part 13 Terminal plate 14 Fixed contact 15 Movable contact 16 Rotation center of trip member 17 Rotation center of interlocking member
Claims (1)
で手動閉状態でも開閉機構部に連動する接点を開とする
ことができる回路遮断器において、電磁コイルによる吸
引動作に連動する連動部材を有し、遮断器の開閉機構部
に係合する引外し部材は、前記連動部材と２段階で当接
するように、第１当接部と第２当接部を有し、第１当接
部は第２当接部より前記引外し部材の回転中心から遠い
位置に設けられ、前記連動部材によって第１当接部を一
定量回動させ、次に第２当接部を回動して遮断器の開閉
機構部の係合を引外すような２段階の当接部を設けた引
外し部材を有すことを特徴とした回路遮断器。1. A circuit breaker that can be manually opened and closed and can open a contact that is interlocked with an opening and closing mechanism even in a manually closed state by releasing an engagement, in conjunction with an attraction operation by an electromagnetic coil. The tripping member having an interlocking member and engaging with the switching mechanism of the circuit breaker has a first abutment portion and a second abutment portion so as to abut on the interlocking member in two stages. The contact portion is provided at a position farther from the rotation center of the tripping member than the second contact portion, the first contact portion is rotated by a fixed amount by the interlocking member, and then the second contact portion is rotated. A circuit breaker having a tripping member provided with a two-stage contact portion for disengaging an opening / closing mechanism of the circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37769698A JP4191833B2 (en) | 1998-12-31 | 1998-12-31 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP37769698A JP4191833B2 (en) | 1998-12-31 | 1998-12-31 | Circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000200536A true JP2000200536A (en) | 2000-07-18 |
| JP4191833B2 JP4191833B2 (en) | 2008-12-03 |
Family
ID=18509088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP37769698A Expired - Fee Related JP4191833B2 (en) | 1998-12-31 | 1998-12-31 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4191833B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100364824B1 (en) * | 2000-12-05 | 2002-12-16 | 엘지산전 주식회사 | The current leakage trip device in earth leakage circuit breaker |
-
1998
- 1998-12-31 JP JP37769698A patent/JP4191833B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100364824B1 (en) * | 2000-12-05 | 2002-12-16 | 엘지산전 주식회사 | The current leakage trip device in earth leakage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4191833B2 (en) | 2008-12-03 |
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| R250 | Receipt of annual fees |
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