JPH01206522A - Arc-extinguishing device - Google Patents
Arc-extinguishing deviceInfo
- Publication number
- JPH01206522A JPH01206522A JP3143188A JP3143188A JPH01206522A JP H01206522 A JPH01206522 A JP H01206522A JP 3143188 A JP3143188 A JP 3143188A JP 3143188 A JP3143188 A JP 3143188A JP H01206522 A JPH01206522 A JP H01206522A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- contact
- movable contact
- fixed contact
- insulator
- 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
- 239000012212 insulator Substances 0.000 claims abstract description 19
- 230000004907 flux Effects 0.000 claims abstract description 17
- 229920000877 Melamine resin Polymers 0.000 claims abstract description 5
- 238000000197 pyrolysis Methods 0.000 claims description 6
- 239000004640 Melamine resin Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 6
- 230000000670 limiting effect Effects 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000005979 thermal decomposition reaction Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 102100025490 Slit homolog 1 protein Human genes 0.000 description 1
- 101710123186 Slit homolog 1 protein Proteins 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、回路しゃ断器等に適用される消弧装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an arc extinguishing device applied to a circuit breaker or the like.
第５図に示すような消弧装置が提案されている。 An arc extinguishing device as shown in FIG. 5 has been proposed.
この消弧装置は、固定接点５０を有する固定接触子５１
と、この固定接触子５１に対向して前記固定接点５０に
接離する可動接点５２を有する可動接触子５３と、前記
固定接触子５１に直列に接続されるとともに前記固定接
点５０および可動接点５２の接触状態の両側に配置され
て前記可動接触子５３に過大電流が流れたときに前記過
大電流および開極直後の可動接点５２と固定接点５０と
の間のアーク５４に鎖交して前記可動接触子５３を前記
固定接触子５１から離れる方向に駆動しかつ前記アーク
５４を前記可動接点５２および固定接点５０から離れる
方向に伸長駆動する磁束Φを発生する一対の駆動コイル
５５と、前記アーク５４の伸長する側に配設された消弧
グリッド５６とを備えている。This arc extinguishing device has a fixed contact 51 having a fixed contact 50.
, a movable contact 53 having a movable contact 52 that faces the fixed contact 51 and makes contact with and separates from the fixed contact 50; When an excessive current flows through the movable contact 53, it interlinks with the arc 54 between the movable contact 52 and the fixed contact 50 immediately after the excessive current and the contact state, and the movable contact 53 is disposed on both sides of the contact state. a pair of drive coils 55 that generate a magnetic flux Φ that drives the contact 53 in a direction away from the fixed contact 51 and drives the arc 54 to extend in a direction away from the movable contact 52 and the fixed contact 50; The arc-extinguishing grid 56 is provided on the extending side of the arc-extinguishing grid 56.
この消弧装置は、駆動コイル５５のコイル中心間を通る
磁束Φにより回路しゃ断器の開閉・トリップ機構により
可動接触子５３が開極する直前に可動接触子５３を高速
開離させ、またアーク５４を消弧グリッド５６側に伸長
する。消弧グリッド５６はアーク５４を誘引する切欠溝
５７を形成した磁性板５８を間隔をおいて複数枚積層し
た構成であり、アーク５４の分割と磁性板５８による冷
却との相乗効果でアーク電圧を高め消弧する。This arc extinguishing device opens the movable contact 53 at high speed just before the movable contact 53 is opened by the opening/closing/trip mechanism of the circuit breaker using the magnetic flux Φ passing between the coil centers of the drive coil 55, and is extended toward the arc extinguishing grid 56 side. The arc extinguishing grid 56 has a structure in which a plurality of magnetic plates 58 with cutout grooves 57 for attracting the arc 54 are laminated at intervals, and the synergistic effect of splitting the arc 54 and cooling by the magnetic plates 58 reduces the arc voltage. Extinguish the arc at a high level.
ところが、この消弧装置は、駆動コイル５５の外側を流
れる反対向きの磁束Φ′が、開離した可動接触子５３お
よびアーク５４に鎖交することにより前記可動接触子５
３の開離およびアーク５４の伸長を阻害するという欠点
があった。However, in this arc extinguishing device, magnetic flux Φ′ flowing in the opposite direction flowing outside the drive coil 55 links the movable contact 53 and the arc 54 that are separated, so that the movable contact 53
This had the disadvantage that it inhibited the opening of the arc 3 and the extension of the arc 54.
また、消弧グリッド５６の切欠溝５７はアークの吸引力
が弱く、しかも高いアーク電圧を得るために磁性板５８
の枚数を増加する必要があり、そのため構造が複雑とな
り、大型化かつコスト高になるという欠点があった。In addition, the notch groove 57 of the arc extinguishing grid 56 has a weak arc attraction force, and in order to obtain a high arc voltage, the magnetic plate 57
It is necessary to increase the number of sheets, which has the disadvantage of complicating the structure, increasing the size and cost.
したがって、この発明の目的は、可動接触子の高速開極
およびアークの伸長を促進するとともに、アーク吸引力
が強く、また構造が簡単で小型にでき、しかも高い限流
性能を維持することができる消弧装置を提供することで
ある。Therefore, an object of the present invention is to promote high-speed opening of a movable contact and extension of an arc, to have a strong arc suction force, to have a simple and compact structure, and to maintain high current limiting performance. An object of the present invention is to provide an arc extinguishing device.
（課題を解決するための手段〕
この発明の消弧装置は、固定接点を有する固定接触子と
、この固定接触子に対向して前記固定接点に接離する可
動接点ををする可動接触子と、前記固定接触子に直列に
接続されるとともに前記固定接点および可動接点の接触
状態の両側に配置されて前記可動接触子、可動接点およ
び固定接点を流れる過大電流に鎖交して前記可動接触子
を前記固定接触子から離れる方向に駆動しかつ前記可動
接点と固定接点との間のアークを前記可動接点および固
定接点の対向方向および前記可動接点および固定接点の
接触状態の両側を結ぶ方向の双方と直角な方向に伸長駆
動する磁束を発生する一対の駆動コイルと、これらの駆
動コイルの前記可動接触子が開離する側に位置する一対
′の側板とこの一対の側板の前記固定接触子と反対側を
連結しかつ前記可動接触子の開閉方向に交差する背板と
で略Ｕ字形に形成された磁性体を有するとともに前記磁
性体の内面を被覆して前記アークの熱により熱分解ガス
を発生する絶縁体を有する消弧部とを備えたものである
。(Means for Solving the Problems) The arc extinguishing device of the present invention includes a fixed contact having a fixed contact, and a movable contact facing the fixed contact and acting as a movable contact that contacts and separates from the fixed contact. , the movable contact is connected in series to the fixed contact and is disposed on both sides of the contact state of the fixed contact and the movable contact, and is linked to the excessive current flowing through the movable contact, the movable contact, and the fixed contact. is driven in a direction away from the fixed contact, and an arc between the movable contact and the fixed contact is generated both in the opposite direction of the movable contact and the fixed contact and in the direction connecting both sides of the contact state of the movable contact and the fixed contact. a pair of drive coils that generate a magnetic flux that is driven to extend in a direction perpendicular to the drive coils, a pair of side plates located on the side where the movable contacts of these drive coils are separated, and the fixed contacts of the pair of side plates. It has a magnetic body formed in a substantially U shape with a back plate connecting the opposite sides and intersecting the opening/closing direction of the movable contact, and the inner surface of the magnetic body is coated to generate pyrolysis gas by the heat of the arc. The arc-extinguishing section has an insulator that is generated.
この発明の構成によれば、磁性体が駆動コイルの外側を
流れる磁束をバイパスするため開離した可動接触子およ
びアークに鎖交しない。また略Ｕ字形の磁性体によりア
ークを吸引するため、吸引力が大きい。さらに駆動コイ
ルによりアークの駆動力が強くなるため、アークの駆動
が速やかになされる。しかも伸長したアークが絶縁体に
触れて熱伝導により冷却されるとともに、アークに加熱
されて絶縁体より発生した熱分解ガスによりアークを冷
却するため、アーク電圧を高めて消弧することができる
。このため、可動接触子の高速開極およびアークの伸長
を促進するとともに、アーク吸引力が強く、また消弧装
置の構造が簡単で小型にでき、しかも高い限流性能を維
持することができる。According to the configuration of the present invention, the magnetic body bypasses the magnetic flux flowing outside the drive coil, so that it does not link with the separated movable contactor and the arc. In addition, since the arc is attracted by the approximately U-shaped magnetic body, the attractive force is large. Further, since the drive coil increases the driving force of the arc, the arc can be driven quickly. Furthermore, the elongated arc touches the insulator and is cooled by heat conduction, and the arc is cooled by pyrolysis gas generated from the insulator when heated by the arc, so the arc voltage can be increased and the arc extinguished. Therefore, high-speed opening of the movable contact and expansion of the arc are promoted, the arc attraction force is strong, the structure of the arc extinguishing device is simple and compact, and high current limiting performance can be maintained.
（実施例〕
この発明の一実施例を第１図ないし第４図に基づいて説
明する。すなわち、この消弧装置は、固定接点１を有す
る固定接触子２と、この固定接触子２に対向して固定接
点１に接離する可動接点３を有する可動接触子４と、固
定接触子２に直列に接続されるとともに固定接点１およ
び可動接点３の接触状態の両側に配置されて可動接触子
４．可動接点３および固定接点１を流れる過大電流に鎖
交して可動接触子４を固定接触子２から離れる方向に駆
動しかつ可動接点３と固定接点１との間のアーク５を可
動接点３および固定接点ｌの対向方向および可動接点３
および固定接点１の接触状態の両側を結ぶ方向の双方と
直角な方向に伸長駆動する磁束を発生する一対の駆動コ
イル６と、これらの駆動コイル６の可動接触子６が開離
する側に位置する一対の側板７とこの一対の側板７の固
定接触子２と反対側を連結しかつ可動接触子４の開閉方
向と垂直な背板８とで略Ｕ字形に形成されたｃｎ磁性体
を有するとともに磁性体９の内面を被覆してアーク５の
熱により熱分解ガスを発生する絶縁体１０を有する消弧
部１）とを備えている。(Embodiment) An embodiment of the present invention will be described based on FIGS. 1 to 4. That is, this arc extinguishing device includes a fixed contact 2 having a fixed contact 1, a movable contact 4 having a movable contact 3 that contacts and separates from the fixed contact 1; 4. Drives the movable contact 4 in a direction away from the fixed contact 2 by interlinking with the excessive current flowing through the movable contact 3 and the fixed contact 1, and causes the arc 5 between the movable contact 3 and the fixed contact 1 to flow through the movable contact. 3 and the opposite direction of the fixed contact l and the movable contact 3
and a pair of drive coils 6 that generate a magnetic flux that extends and drives in a direction perpendicular to both directions connecting both sides of the fixed contact 1 in the contact state, and a pair of drive coils 6 located on the side where the movable contacts 6 of these drive coils 6 are separated. It has a CN magnetic body formed in a substantially U-shape by a pair of side plates 7 and a back plate 8 that connects the opposite side of the pair of side plates 7 to the fixed contact 2 and is perpendicular to the opening/closing direction of the movable contact 4. It also includes an arc extinguishing section 1) having an insulator 10 that covers the inner surface of the magnetic material 9 and generates pyrolysis gas by the heat of the arc 5.
前記固定接触子２は、導電板１２にＵ字形のスリット１
３を形成することによりその中央部に形成されている。The fixed contact 2 has a U-shaped slit 1 in the conductive plate 12.
3 is formed at the center thereof.
また固定接触子２に連続して固定接点１と反対側にアー
ク走行、板２ａを形成している。導電板１２の端部は電
源端子１４を設けている。Continuing from the fixed contact 2, an arc running plate 2a is formed on the opposite side of the fixed contact 1. A power terminal 14 is provided at the end of the conductive plate 12 .
前記可動接触子４は回路しゃ断器の過大ＴＬ流を検出す
る検出部（図示せず）を介して負荷側端子（図示せず）
に接続される。また可動接触子４は回路しゃ断器の開閉
・トリップ機構（図示せず）のトリップ動作によりしゃ
断し、開閉・トリップ機構のセント状態でハンドル（図
示せず）により開閉される。The movable contactor 4 is connected to a load side terminal (not shown) via a detection unit (not shown) that detects an excessive TL flow of a circuit breaker.
connected to. Further, the movable contactor 4 is disconnected by a trip operation of an opening/closing/trip mechanism (not shown) of the circuit breaker, and is opened/closed by a handle (not shown) when the opening/closing/trip mechanism is in the centered state.
前記駆動コイル６は前記導電板１２の前記固定接点ｌの
両側部をＵ字に折曲することにより形成している。第４
図のように、固定接触子２および可動接触子４に矢印へ
の方向に電流が流れるとき、駆動コイル６間に中１の磁
束が発生する。この磁束Φ１が可動接触子４を流れる過
大電流に鎖交することにより可動接触子４は固定接触子
２から開離する方向にローレンツ力を受ける。このため
、第２図に示すように、過大電流が流れると瞬時に可動
接触子４が開離を始め、続いて開閉・トリップ機構が作
動して機械的に開極動作し第３図に示すようになる。ま
た可動接点３の開離により発生したアーク５も磁束φ１
が鎖交することにより電源端子１４側にローレンツ力を
受ける。このため、第２図および第３図に示すように、
アーク５が電ｔＡＸｉ子１４の方向に伸長する。The drive coil 6 is formed by bending both sides of the fixed contact l of the conductive plate 12 into a U-shape. Fourth
As shown in the figure, when current flows through the fixed contact 2 and the movable contact 4 in the direction of the arrow, a middle magnetic flux is generated between the drive coils 6. When this magnetic flux Φ1 interlinks with the excessive current flowing through the movable contact 4, the movable contact 4 receives a Lorentz force in the direction of separating it from the fixed contact 2. Therefore, as shown in Fig. 2, when an excessive current flows, the movable contact 4 instantly begins to open and separate, and then the opening/closing/trip mechanism is activated to mechanically open the contact, as shown in Fig. 3. It becomes like this. In addition, the arc 5 generated by the opening of the movable contact 3 also has a magnetic flux φ1
As a result of the interlinking, Lorentz force is applied to the power supply terminal 14 side. Therefore, as shown in Figures 2 and 3,
The arc 5 extends in the direction of the electric tAXi element 14.
前記（ａ外体９は、０：す板７に切欠部１５を形成し、
切欠部１５を駆動コイル６に係合している。６イ支性体
９は鉄板等の金属板を実施例としている。前記絶縁体１
０は成形されたものをかしめや嵌合等の機械的手段で磁
性体９の内面に固定したり、また絶縁材料をコーティン
グや蒸着する等の熱、電気。The above (a) outer body 9 has a notch 15 formed in the plate 7,
The notch 15 is engaged with the drive coil 6. 6B The supporting body 9 is made of a metal plate such as an iron plate. The insulator 1
0 is heat and electricity used to fix the molded material to the inner surface of the magnetic material 9 by mechanical means such as caulking or fitting, or to coat or vapor deposit an insulating material.
化学的手段で磁性体９に一体化している。そして、第３
図に示すように、消弧部１）に接近したアーク５の回り
に発生する磁束が磁性体９に集中して、磁性体９の側板
７間を通る磁束にアーク５が鎖交するため、第３図に示
すようにアーク５が背板８側に磁気吸引され、アーク５
が伸長することにより陽光柱の電圧が上昇してアーク電
圧が高まる。It is integrated into the magnetic body 9 by chemical means. And the third
As shown in the figure, the magnetic flux generated around the arc 5 approaching the arc extinguishing part 1) concentrates on the magnetic body 9, and the arc 5 interlinks with the magnetic flux passing between the side plates 7 of the magnetic body 9. As shown in FIG. 3, the arc 5 is magnetically attracted to the back plate 8 side, and the arc 5
As the positive column expands, the voltage of the positive column increases and the arc voltage increases.
またアーク５が背板８の内側の絶縁体１０に押付けられ
、これによりアーク５の熱が伝熱され冷却される。さら
に、絶縁体ｌＯはメラミン樹脂などを用いることにより
、アーク５により加熱されて発生する熱分解ガスである
水素ガスの熱伝導率が大きいため、アーク５を急冷する
。このため、アークの断面積が縮小し電流密度が高めら
れ吸引力が高められるとともに、アークの冷却効果によ
ってアーク電圧もさらに上昇する。Further, the arc 5 is pressed against the insulator 10 inside the back plate 8, whereby the heat of the arc 5 is transferred and cooled. Furthermore, by using a melamine resin or the like as the insulator IO, the arc 5 is rapidly cooled because the thermal conductivity of hydrogen gas, which is a pyrolysis gas generated when heated by the arc 5, is high. Therefore, the cross-sectional area of the arc is reduced, the current density is increased, and the attractive force is increased, and the arc voltage is further increased due to the cooling effect of the arc.
さらに、消弧部１）は第４図に示す磁束φ１の駆動コイ
ル６の外側を流れるΦ１′を磁性体９にバイパスさせて
おり、このバイパスにより、開離した可動接触子４およ
びアーク５がそのｔ■束に鎮交しないため、可動接触子
４を固定接触子２に接近する方向に駆動されることがな
く、またアーク５の伸長が阻害されることがない。Furthermore, the arc extinguishing part 1) bypasses the magnetic flux φ1' flowing outside the drive coil 6 of the magnetic flux φ1 shown in FIG. Since the t-bundle is not intersected, the movable contact 4 is not driven in the direction approaching the fixed contact 2, and the extension of the arc 5 is not inhibited.
前記絶縁体１０の絶縁材料は、アークの熱などによって
熱分解する時に、水素ガスをできるだけ多量に発生する
材料が好ましい。表は各絶縁材料を窒素ガスの雰囲気中
で約１秒間高周波加熱した場合の水素ガスの発生量を示
すものである。The insulating material of the insulator 10 is preferably a material that generates as much hydrogen gas as possible when thermally decomposed by heat of an arc or the like. The table shows the amount of hydrogen gas generated when each insulating material is subjected to high frequency heating for about 1 second in a nitrogen gas atmosphere.
（以下余白）
分析方法はキューリポイントパイロライザを用いて熱分
解させたガスをガスクロマトグラフィに通して分析した
。試料量は０．１ｍｇ、熱分解温度は７６４℃、熱分解
雰囲気は窒素ガスである。分析条件はカラムがモレキエ
ラーシーブ−５Ａ、 カラム温度は５０℃、検出器は熱
伝導型検出器（ＴＣＤ）、試料気化室温度は１００°Ｃ
５検出器温度１００℃、キャリアガスは窒素ガスである
。(Left below) The analysis method was to pass the thermally decomposed gas using a Curipoint pyrolyzer through gas chromatography. The sample amount was 0.1 mg, the thermal decomposition temperature was 764° C., and the thermal decomposition atmosphere was nitrogen gas. The analysis conditions were: Molecule sieve-5A column, column temperature 50°C, detector thermal conductivity detector (TCD), and sample vaporization chamber temperature 100°C.
5 Detector temperature is 100° C., and the carrier gas is nitrogen gas.
表より、メラミン樹脂は他の樹脂に比べて熱分解時の水
素発生量が多いことがわかる。したがって、前記絶縁体
１０にメラミン樹脂を用いる場合、絶縁体１０の熱分解
によって発生する水素ガスの発生量が多いため、アーク
５を効果的に冷却でき、より早く消弧することができる
。このため、簡単な構成により高いアーク電圧を得るこ
とができる。The table shows that melamine resin generates more hydrogen during thermal decomposition than other resins. Therefore, when melamine resin is used for the insulator 10, the amount of hydrogen gas generated by thermal decomposition of the insulator 10 is large, so the arc 5 can be effectively cooled and extinguished more quickly. Therefore, a high arc voltage can be obtained with a simple configuration.
なお、この発明の消弧装置において、絶縁体１０の背板
８側を細幅にすると紳幅内の圧力が高まりアーク５が圧
力消弧される作用が加わるのでさらに消弧性がよくなる
。In the arc extinguishing device of the present invention, if the width of the back plate 8 side of the insulator 10 is narrowed, the pressure within the width increases and the arc 5 is extinguished under pressure, so that the arc extinguishing performance is further improved.
さらに、絶縁体１０の表面にアーク５に交差する１つま
たは複数の溝を形成することにより、アーク５は溝に交
差するように溝に沿って伸長するため、伸長効果により
アーク電圧をさらに高めることがきる。Furthermore, by forming one or more grooves intersecting the arc 5 on the surface of the insulator 10, the arc 5 extends along the groove so as to intersect with the groove, thereby further increasing the arc voltage due to the elongation effect. I can do things.
この発明の消弧装置によれば、磁性体が駆動コイルの外
側を流れる磁束をバイパスするため開離した可動接触子
およびアークに鎖交しない。また略Ｕ字形の磁性体によ
りアークを吸引するため、吸引力が大きい。さらに駆動
コイルによりアークの駆動力が強くなるため、アークの
駆動が速やかになされる。しかも伸長したアークが絶縁
体に触れて熱伝導により冷却されるとともに、アークに
加熱されて！１！１８ｉ体より発生した熱分解ガスによ
りアークを冷却するため、アーク電圧を高めて消弧する
ことができる。このため、可動接触子の高速開極および
アークの伸長を促進するとともに、アーク吸引力が強く
、また消弧４Ａ置の構造が簡単で小型にでき、しかも高
い限流性能を維持することができるという効果がある。According to the arc extinguishing device of the present invention, since the magnetic body bypasses the magnetic flux flowing outside the drive coil, it does not link with the separated movable contactor and the arc. In addition, since the arc is attracted by the approximately U-shaped magnetic body, the attractive force is large. Furthermore, since the drive coil increases the driving force of the arc, the arc can be driven quickly. What's more, the elongated arc touches the insulator and is cooled by heat conduction, while also being heated by the arc! Since the arc is cooled by the pyrolysis gas generated by the 1!18i body, it is possible to extinguish the arc by increasing the arc voltage. Therefore, it promotes high-speed opening of the movable contact and extension of the arc, has a strong arc suction force, and has a simple and compact arc-extinguishing 4A structure, while maintaining high current-limiting performance. There is an effect.
第１図はこの発明の一実施例の斜視図、第２図は開極直
後の状態を示す側面図、第３図は開極状態を示す断面図
、第４図は駆動コイルの動作原理を示す斜視図、第５図
は提案例の斜視図である。
１・・・固定接点、２・・・固定接触子、３・・・可動
接点、４・・・可動接触子、５・・・アーク、６・・・
駆動コイル、７・・・側板、８・・・背板、９・・・磁
性体、１０・・・絶縁体、１）・・・消弧部
第２図
第３図
第４図
第５図Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a side view showing the state immediately after opening, Fig. 3 is a sectional view showing the opening state, and Fig. 4 shows the operating principle of the drive coil. FIG. 5 is a perspective view of a proposed example. DESCRIPTION OF SYMBOLS 1... Fixed contact, 2... Fixed contact, 3... Movable contact, 4... Movable contact, 5... Arc, 6...
Drive coil, 7...Side plate, 8...Back plate, 9...Magnetic material, 10...Insulator, 1)... Arc extinguishing part Fig. 2 Fig. 3 Fig. 4 Fig. 5
Claims (2)
に対向して前記固定接点に接離する可動接点を有する可
動接触子と、前記固定接触子に直列に接続されるととも
に前記固定接点および可動接点の接触状態の両側に配置
されて前記可動接触子、可動接点および固定接点を流れ
る過大電流に鎖交して前記可動接触子を前記固定接触子
から離れる方向に駆動しかつ前記可動接点と固定接点と
の間のアークを前記可動接点および固定接点の対向方向
および前記可動接点および固定接点の接触状態の両側を
結ぶ方向の双方と直角な方向に伸長駆動する磁束を発生
する一対の駆動コイルと、これらの駆動コイルの前記可
動接触子が開離する側に位置する一対の側板とこの一対
の側板の前記固定接触子と反対側を連結しかつ前記可動
接触子の開閉方向に交差する背板とで略Ｕ字形に形成さ
れた磁性体を有するとともに前記磁性体の内面を被覆し
て前記アークの熱により熱分解ガスを発生する絶縁体を
有する消弧部とを備えた消弧装置。(1) A fixed contact having a fixed contact, a movable contact facing the fixed contact and having a movable contact that contacts and separates from the fixed contact, and a movable contact connected in series to the fixed contact and the fixed contact and are arranged on both sides of the contact state of the movable contact, and drive the movable contact in a direction away from the fixed contact by interlinking with the excessive current flowing through the movable contact, the movable contact, and the fixed contact, and drive the movable contact in a direction away from the fixed contact. a pair of drives that generate a magnetic flux that extends and drives an arc between the movable contact and the fixed contact in a direction perpendicular to both the opposing direction of the movable contact and the fixed contact and the direction that connects both sides of the contact state of the movable contact and the fixed contact; A coil, a pair of side plates located on the side where the movable contact of these drive coils opens and connects the side opposite to the fixed contact of this pair of side plates, and intersects in the opening/closing direction of the movable contact. An arc extinguishing device comprising: a magnetic body formed in a substantially U-shape with a back plate; and an arc extinguishing section having an insulator that covers the inner surface of the magnetic body and generates pyrolysis gas by the heat of the arc. .
の範囲第（１）項記載の消弧装置。(2) The arc extinguishing device according to claim (1), wherein the material of the insulator is melamine resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63031431A JPH0624086B2 (en) | 1988-02-12 | 1988-02-12 | Arc extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63031431A JPH0624086B2 (en) | 1988-02-12 | 1988-02-12 | Arc extinguishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01206522A true JPH01206522A (en) | 1989-08-18 |
| JPH0624086B2 JPH0624086B2 (en) | 1994-03-30 |
Family
ID=12331048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63031431A Expired - Lifetime JPH0624086B2 (en) | 1988-02-12 | 1988-02-12 | Arc extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624086B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04334840A (en) * | 1991-05-09 | 1992-11-20 | Mitsubishi Electric Corp | Circuit breaker |
| JP2002270080A (en) * | 2001-03-12 | 2002-09-20 | Mitsubishi Electric Corp | Current limiting mechanism and circuit breaker having the same |
| US20180144900A1 (en) * | 2013-10-18 | 2018-05-24 | Littelfuse, Inc. | Foam fuse filler and cartridge fuse |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08151626A (en) * | 1994-11-28 | 1996-06-11 | Chiba Yogyo Kk | Precast box-like article and manufacture thereof |
-
1988
- 1988-02-12 JP JP63031431A patent/JPH0624086B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04334840A (en) * | 1991-05-09 | 1992-11-20 | Mitsubishi Electric Corp | Circuit breaker |
| JP2002270080A (en) * | 2001-03-12 | 2002-09-20 | Mitsubishi Electric Corp | Current limiting mechanism and circuit breaker having the same |
| US20180144900A1 (en) * | 2013-10-18 | 2018-05-24 | Littelfuse, Inc. | Foam fuse filler and cartridge fuse |
| US10685804B2 (en) * | 2013-10-18 | 2020-06-16 | Littelfuse, Inc. | Manufacturing method for foam fuse filler and cartridge fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624086B2 (en) | 1994-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |