JP2525972B2 - Arc extinguishing device - Google Patents
Arc extinguishing deviceInfo
- Publication number
- JP2525972B2 JP2525972B2 JP3172313A JP17231391A JP2525972B2 JP 2525972 B2 JP2525972 B2 JP 2525972B2 JP 3172313 A JP3172313 A JP 3172313A JP 17231391 A JP17231391 A JP 17231391A JP 2525972 B2 JP2525972 B2 JP 2525972B2
- Authority
- JP
- Japan
- Prior art keywords
- arc
- flat plate
- extinguishing device
- pair
- magnetic body
- 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.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】この発明は、回路遮断器等に適用
される消弧装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arc extinguishing device applied to a circuit breaker or the like.
【０００２】[0002]
【従来の技術】第１の従来例を図１１に示す。すなわ
ち、この消弧装置は、切欠７０を有する複数枚の磁性板
７１とこれを積層状態に支持する絶縁板７２により構成
された消弧グリッドである。接点間に発生したアーク
は、磁性板７１の切欠７０の内方に吸引され、磁性板７
１に接触して冷却されるとともに、アーク分割によりア
ークの電極降下電圧が増加して放電を維持するための電
圧が上昇し、消弧となる。2. Description of the Related Art A first conventional example is shown in FIG. That is, this arc extinguishing device is an arc extinguishing grid composed of a plurality of magnetic plates 71 having notches 70 and an insulating plate 72 supporting the magnetic plates 71 in a laminated state. The arc generated between the contacts is attracted inside the notch 70 of the magnetic plate 71,
While being brought into contact with 1 to be cooled, the electrode drop voltage of the arc increases due to the arc division, and the voltage for maintaining the discharge increases, and the arc is extinguished.
【０００３】第２の従来例を図１２に示す。すなわち、
この消弧装置は、磁性板７３をＵ字形に折曲したもので
あり、その内側にアークを通過させて内面に吸引するこ
とによりアークを伸長かつ冷却して消弧するものであ
る。A second conventional example is shown in FIG. That is,
This arc extinguishing device is one in which a magnetic plate 73 is bent in a U shape, and an arc is passed through the magnetic plate 73 to be attracted to the inner surface to extend and cool the arc to extinguish the arc.
【０００４】[0004]
【発明が解決しようとする課題】第１の従来例は、数枚
の磁性板７１と絶縁板７３により構成されているので、
組立が複雑でありコストが高いという欠点があった。第
２の従来例は、コストは安いが、直流短絡遮断を行う際
に接点７４，７５間に発生したアークＺが磁性板７３に
図１３に示すように転流して遮断不能になることがあっ
た。すなわち、この消弧装置で接点開離距離１５ｍｍ，
直流１２５Ｖ，１ｋＡの短絡遮断試験を行ったとき、図
１４のようにアーク電流Ｉが発生し、１４０ｍsec のと
きアークが磁性体７３に転流してアーク電流が多少低下
しアーク電圧が発生するが２２０msecを過ぎてもアーク
が継続し、遮断不能であった。Since the first conventional example is composed of several magnetic plates 71 and insulating plates 73,
It has the drawbacks of complicated assembly and high cost. In the second conventional example, although the cost is low, the arc Z generated between the contacts 74 and 75 during the DC short circuit interruption may be commutated to the magnetic plate 73 as shown in FIG. It was That is, with this arc extinguishing device, the contact opening distance is 15 mm,
When a short circuit interruption test of direct current 125V, 1kA is performed, an arc current I is generated as shown in FIG. 14, and at 140msec, the arc is commutated to the magnetic body 73, the arc current is slightly reduced and an arc voltage is generated, but 220msec. Even after passing, the arc continued and it was impossible to shut off.
【０００５】したがって、この発明の目的は、コスト安
にできるとともに確実な直流遮断を達成することができ
る消弧装置を提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an arc extinguishing device which can reduce the cost and can achieve a reliable DC interruption.
【０００６】[0006]
【課題を解決するための手段】請求項１の消弧装置は、
アーク転流部となる底部と電磁路となる一対の側部から
なるＵ字形であって相対向した一対の磁性体部と、これ
らの磁性体部の前記側部の相対向する方向の先端部相互
を接続する接続部とを備えたものである。An arc-extinguishing device according to claim 1,
A pair of magnetic substance portions and opposite a U shape comprising a pair of side portions as the bottom and the electromagnetic path including an arc commutation unit, the direction of the tip portion which faces the sides of these magnetic portion And a connecting portion for connecting each other.
【０００７】請求項２の消弧装置は、請求項１におい
て、前記一対の磁性体部の前記アーク転流部がそれぞれ
略矩形平板により形成され、前記一対の磁性体部の前記
電磁路および前記接続部がそれぞれ略Ｖ字形平板により
一体に形成され、かつ前記略Ｖ字形平板の両端部が前記
略矩形平板の各側部にまたがるように前記略Ｖ字形平板
が前記略矩形平板の両側に一体に連続している。According to a second aspect of the present invention, there is provided the arc extinguishing device according to the first aspect, wherein the arc commutation portions of the pair of magnetic body portions are respectively formed by substantially rectangular flat plates, and the electromagnetic paths and the pair of magnetic body portions are formed. The connection portions are integrally formed by substantially V-shaped flat plates, and the substantially V-shaped flat plates are integrally formed on both sides of the substantially rectangular flat plate so that both ends of the substantially V-shaped flat plate straddle each side of the substantially rectangular flat plate. In succession.
【０００８】請求項３の消弧装置は、請求項１，２にお
いて、前記磁性体部および前記接続部の外面が略Ｕ字形
に折曲された絶縁板により被覆されている。The arc-extinguishing device according to a third aspect of the present invention is the arc-extinguishing device according to the first and second aspects, wherein the outer surfaces of the magnetic body portion and the connection portion are covered with an insulating plate that is bent in a substantially U shape.
【０００９】[0009]
【作用】請求項１の消弧装置によれば、接点間に発生し
たアークがＵ字形の磁性体部の内側を貫通するように配
置される。このとき、アークは一対のＵ字形の磁性体部
によりその底部となるアーク転流部側に磁気吸引力を受
け、これによりアークが直接アーク転流部に転流し、ま
たは電磁路に転流して電磁路から前記磁気吸引力により
アーク転流部に走行し、これらにより接点間にアークと
電磁路と接続部とからなるＷ字形の電流路が形成され
る。その結果、各アークは電磁路との間に電磁反発力を
受けて伸長しこれによりアーク電圧が上昇し消弧する。
したがって、この消弧装置は、構造が簡単なためコスト
安にできるとともに確実な直流遮断を達成することがで
きる。According to the arc extinguishing device of the first aspect, the arc generated between the contacts is arranged so as to penetrate through the inside of the U-shaped magnetic body portion. At this time, the arc receives a magnetic attraction force on the side of the arc commutation portion, which is the bottom of the arc, by the pair of U-shaped magnetic body portions, whereby the arc directly commutates to the arc commutation portion or commutates to the electromagnetic path. The magnetic attraction force travels from the electromagnetic path to the arc commutation portion, and a W-shaped current path composed of the arc, the electromagnetic path, and the connection portion is formed between the contacts. As a result, each arc receives an electromagnetic repulsive force between itself and the electromagnetic path and extends, whereby the arc voltage rises and the arc is extinguished.
Therefore, this arc-extinguishing device has a simple structure, so that the cost can be reduced and a reliable DC cutoff can be achieved.
【００１０】請求項２の消弧装置によれば、請求項１に
おいて、前記一対の磁性体部の前記アーク転流部はそれ
ぞれ略矩形平板により形成され、前記一対の磁性体部の
前記電磁路および前記接続部はそれぞれ略Ｖ字形平板に
より一体に形成され、かつ前記略Ｖ字形平板の両端部が
前記略矩形平板の各側部にまたがるように前記略Ｖ字形
平板が前記略矩形平板の両側に一体に連続しているた
め、略矩形平板と略Ｖ字形平板とを１枚の磁性板を打抜
き、かつ略Ｖ字形平板を略矩形平板に対して折曲するこ
とにより形成できるので、製造容易になる。According to the arc extinguishing device of the second aspect, in the first aspect, the arc commutation portions of the pair of magnetic body portions are formed by substantially rectangular flat plates, and the electromagnetic paths of the pair of magnetic body portions are formed. And the connecting portion are integrally formed by a substantially V-shaped flat plate, and the substantially V-shaped flat plate is on both sides of the substantially rectangular flat plate so that both ends of the substantially V-shaped flat plate straddle each side of the substantially rectangular flat plate. Since it is integrally continuous with each other, a substantially rectangular flat plate and a substantially V-shaped flat plate can be formed by punching one magnetic plate and bending the substantially V-shaped flat plate with respect to the substantially rectangular flat plate, which facilitates manufacturing. become.
【００１１】請求項３の消弧装置によれば、請求項１，
２において、前記磁性体部および前記接続部の外面が略
Ｕ字形に折曲された絶縁板により被覆されているため、
消弧装置および接点を収納する成形品のケースをアーク
熱に対して保護することができる。According to the arc extinguishing device of claim 3, claim 1
In 2, the outer surfaces of the magnetic body portion and the connection portion are covered with an insulating plate bent in a substantially U shape,
The case of the molded product containing the arc extinguishing device and the contacts can be protected against arc heat.
【００１２】[0012]
【実施例】この発明の第１の実施例を図１ないし図８に
より説明する。すなわち、この消弧装置は、一対の磁性
体部１，２と、接続部３とを有する。一対の磁性体部
１，２は、アーク転流部４となる底部と、電磁路６，７
となる一対の側部からなるＵ字形であって相対向してい
る。これらの磁性体部１，２はその内側を接点８が移動
できるように一対の接点８，９間に配置されている。接
点８は可動接触子１３に設けられ、接点９は固定接触子
１４に設けられ、可動接触子１３の動作により接点８が
磁性体部１，２の間を移動する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this arc extinguishing device has a pair of magnetic body parts 1 and 2 and a connecting part 3. The pair of magnetic material parts 1 and 2 are provided with a bottom part which becomes an arc commutation part 4 and electromagnetic paths 6 and 7.
It is opposite a U-shaped comprising a pair of side portions becomes. These magnetic parts 1 and 2 are arranged between a pair of contacts 8 and 9 so that the contact 8 can move inside. The contact 8 is provided on the movable contact 13, the contact 9 is provided on the fixed contact 14, and the operation of the movable contact 13 causes the contact 8 to move between the magnetic bodies 1 and 2.
【００１３】また接続部３は、磁性体部１，２間の側部
６，７の相対向する方向の先端部相互を接続している。
この実施例の消弧装置は、図７に示すように、一対の磁
性体部１，２のアーク転流部４をそれぞれ略矩形平板１
０により形成し、一対の磁性体部１，２の電磁路６，７
および接続部３を略Ｖ字形平板１１により一体に形成
し、かつ略Ｖ字形平板１１の両端部が略矩形平板１０の
各側部にまたがるように略Ｖ字形平板１１が略矩形平板
１０の両側に一体に連続している。また略矩形平板１０
は接点８，９に近い側の縁部に折曲部１２を形成してい
る。The connecting portion 3 connects the end portions of the side portions 6 and 7 between the magnetic body portions 1 and 2 in the opposite directions to each other.
In the arc extinguishing device of this embodiment, as shown in FIG. 7, the arc commutation parts 4 of the pair of magnetic material parts 1 and 2 are respectively formed into substantially rectangular flat plates 1.
0, and the electromagnetic paths 6, 7 of the pair of magnetic body parts 1, 2
And the connecting portion 3 are integrally formed by the substantially V-shaped flat plate 11, and the substantially V-shaped flat plate 11 is formed on both sides of the substantially rectangular flat plate 10 so that both ends of the substantially V-shaped flat plate 11 straddle each side of the substantially rectangular flat plate 10. It is continuous in one. Also, a substantially rectangular flat plate 10
Has a bent portion 12 at the edge close to the contacts 8, 9.
【００１４】この実施例によれば、短絡遮断等により接
点８，９間に図２に示すようにアークＺが発生すると、
アークＺが一対のＵ字形の磁性体部１，２の内側を貫通
するので、アークＺが磁性体部１，２のアーク転流部４
側すなわち矢印の方向に磁気吸引力を受け、これにより
アークＺが直接アーク転流部４に転流し、図３の状態に
なる。According to this embodiment, when an arc Z is generated between the contacts 8 and 9 due to short circuit interruption or the like, as shown in FIG.
Since the arc Z penetrates the inside of the pair of U-shaped magnetic material parts 1 and 2, the arc Z is the arc commutation part 4 of the magnetic material parts 1 and 2.
A magnetic attraction force is applied to the side, that is, in the direction of the arrow, whereby the arc Z directly commutates to the arc commutation unit 4, and the state shown in FIG. 3 is obtained.
【００１５】また図４および図５に示すようにアークＺ
が直接アーク転流部４に転流せずに、電磁路６，７に転
流することがあるが、このときも前記と同様にアーク転
流部４の方向に磁気吸引力を受けて電磁路６，７上を図
６のようにアーク転流部４に走行し、図３の状態にな
る。そして、図３の状態では接点８，９間のアークＺ、
電磁路６，７および接続部３によりＷ字形の電流路が形
成されているため、各アークＺは電磁路６，７との間で
それぞれ矢印の方向に電磁反発力を生じるので伸長して
アーク電圧が上昇しこれにより消弧する。なお、図４の
アークＺの転流後磁気吸引力により図６の状態にアーク
Ｚが走行するに伴って小さいＷ字形の電流路が形成され
次第に大きくなるので、この段階でもアークＺに電磁反
発力を生じてアーク転流部４への走行を推進する。Further, as shown in FIGS. 4 and 5, arc Z
Sometimes does not directly commutate to the arc commutation portion 4 but commutates to the electromagnetic paths 6 and 7. At this time, as in the above case, the electromagnetic attraction force is applied in the direction of the arc commutation portion 4 to the electromagnetic path. It runs on the arc commutation part 4 on 6 and 7 as shown in FIG. And in the state of FIG. 3, the arc Z between the contacts 8 and 9,
Since the W-shaped current path is formed by the electromagnetic paths 6 and 7 and the connecting portion 3, each arc Z generates an electromagnetic repulsive force in the directions of the arrows with the electromagnetic paths 6 and 7, so that the arc Z expands. The voltage rises and the arc is extinguished. Note that a small W-shaped current path is formed as the arc Z travels to the state of FIG. 6 due to the magnetic attraction force after commutation of the arc Z of FIG. A force is generated to drive traveling to the arc commutation unit 4.
【００１６】接点開離距離を１５ｍｍとして、直流１２
５Ｖ，１ｋＡの遮断試験を行った結果を図８に示す。す
なわち、遮断と同時に発生したアーク電流Ｉは１７０ｍ
sec付近で磁性体部１，２に転流して図４の状態にな
り、アーク電流が低下するとともにアーク電圧Ｖ1 が発
生し、２４０ｍsec 付近で消弧され接点間電圧Ｖ2 が発
生していることが明らかである。なお、通常は図２のア
ークＺの発生からただちに図３のアーク転流部４に直接
転流するが、実験の結果数回の遮断で一度の割合で図４
の状態にアークＺが電磁路６，７に飛び移るのが観察さ
れた。With a contact separation distance of 15 mm, DC 12
The results of a 5V, 1 kA interruption test are shown in FIG. That is, the arc current I generated at the same time as the interruption is 170 m
In the vicinity of sec, the commutation occurs in the magnetic members 1 and 2 and the state shown in FIG. 4 is reached. The arc current decreases and the arc voltage V 1 is generated, and in the vicinity of 240 msec, the arc is extinguished and the inter-contact voltage V 2 is generated. It is clear. Normally, the arc Z in FIG. 2 is immediately communicated immediately to the arc commutation part 4 in FIG.
It was observed that the arc Z jumped to the electromagnetic paths 6 and 7 in the state.
【００１７】したがって、この消弧装置は、構造が簡単
なためコスト安にできるとともに確実な直流遮断を達成
することができる。また遮断試験により交流２６５Ｖ，
５ｋＡの半波遮断も達成できた。また、アーク転流部４
を形成する略矩形平板と電磁路６，７および接続部３を
一体に形成する略Ｖ字形平板とを１枚の磁性板を打抜
き、かつ略Ｖ字形平板を略矩形平板に対して折曲するこ
とにより形成できるので、製造容易になる。Therefore, the arc extinguishing device has a simple structure, so that the cost can be reduced and a reliable DC cutoff can be achieved. In addition, by the interruption test, AC 265V,
A half-wave cutoff of 5 kA was also achieved. In addition, the arc commutation unit 4
The substantially rectangular flat plate forming the magnetic field and the substantially V-shaped flat plate integrally forming the electromagnetic paths 6, 7 and the connecting portion 3 are punched out from one magnetic plate, and the substantially V-shaped flat plate is bent with respect to the substantially rectangular flat plate. Since it can be formed by the above, manufacturing becomes easy.
【００１８】この発明の第２の実施例を図９および図１
０に示す。すなわち、この消弧装置は、第１の実施例に
おいて、磁性体部１，２および接続部３の外面を略Ｕ字
形に折曲された絶縁板１５により被覆したものである。
図１０に示すように接続部３の外面にかしめ突起１６を
外向きにたたき出し、かしめ突起１６に嵌合する孔１７
を絶縁板１５に形成して、かしめ突起１６を孔１７にか
しめることにより絶縁板１５を消弧装置に固定してい
る。１８は成形品のケースである。A second embodiment of the present invention is shown in FIGS. 9 and 1.
0 is shown. That is, in the arc extinguishing device, in the first embodiment, the outer surfaces of the magnetic body parts 1 and 2 and the connecting part 3 are covered with an insulating plate 15 bent into a substantially U shape.
As shown in FIG. 10, the caulking protrusion 16 is tapped outward on the outer surface of the connecting portion 3, and the hole 17 is fitted into the caulking protrusion 16.
Is formed on the insulating plate 15, and the caulking projection 16 is caulked in the hole 17 to fix the insulating plate 15 to the arc extinguishing device. Reference numeral 18 is a case of a molded product.
【００１９】この実施例によれば、成形品のケース１８
に消弧装置および接点８，９を収納したときに、アーク
Ｚの熱でケース１８が損傷するのを防止し、ケース１８
をアーク熱に対して保護している。According to this embodiment, the molded product case 18
When the arc extinguishing device and the contacts 8 and 9 are stored in the case, the case 18 is prevented from being damaged by the heat of the arc Z.
Protects against arc heat.
【００２０】[0020]
【発明の効果】請求項１の消弧装置は、アーク転流部と
なる底部と電磁路となる一対の側部からなるＵ字形であ
って平行に相対向した一対の磁性体部と、これらの磁性
体部の前記側部の相対向する方向の先端部相互を接続す
る接続部とを備えたため、磁性体部の内側を貫通してア
ークが磁性体部によりアーク転流部に転流して、接点間
にアークと電磁路と接続部とからなるＷ字形の電流路が
形成される。その結果、各アークは電磁路との間で電磁
反発力を受けて伸長しこれによりアーク電圧が上昇し消
弧する。したがって、この消弧装置は、構造が簡単なた
めコスト安にできるとともに確実な直流遮断および交流
半波遮断を達成することができるという効果がある。The arc-extinguishing device according to the first aspect of the present invention is a pair of U-shaped magnetic body portions that are parallel to each other and that are composed of a bottom portion that serves as an arc commutation portion and a pair of side portions that serve as electromagnetic paths. Since it has a connecting portion that connects the end portions of the side portions of the magnetic body portion in opposite directions to each other, the arc penetrates the inside of the magnetic body portion, and the arc is commutated to the arc commutation portion by the magnetic body portion. , A W-shaped current path composed of an arc, an electromagnetic path, and a connecting portion is formed between the contacts. As a result, each arc receives the electromagnetic repulsive force with the electromagnetic path and expands, whereby the arc voltage rises and the arc is extinguished. Therefore, this arc-extinguishing device has the effects that the structure is simple, the cost can be reduced, and reliable DC interruption and AC half-wave interruption can be achieved.
【００２１】請求項２の消弧装置は、請求項１におい
て、一対の磁性体部の前記アーク転流部はそれぞれ略矩
形平板により形成され、前記一対の磁性体部の前記電磁
路および前記接続部はそれぞれ略Ｖ字形平板により一体
に形成され、かつ前記略Ｖ字形平板の両端部が前記略矩
形平板の各側部にまたがるように前記略Ｖ字形平板が前
記略矩形平板の両側に一体に連続しているため、略矩形
平板と略Ｖ字形平板とを１枚の磁性板を打抜き、かつ略
Ｖ字形平板を略矩形平板に対して折曲することにより形
成できるので、製造容易である。The arc extinguishing device according to a second aspect is the arc extinguishing device according to the first aspect, wherein the arc commutation portions of the pair of magnetic body portions are respectively formed by substantially rectangular flat plates, and the electromagnetic path and the connection of the pair of magnetic body portions are formed. The portions are integrally formed by substantially V-shaped flat plates, and the substantially V-shaped flat plates are integrally formed on both sides of the substantially rectangular flat plate so that both ends of the substantially V-shaped flat plate straddle each side of the substantially rectangular flat plate. Since they are continuous, a substantially rectangular flat plate and a substantially V-shaped flat plate can be formed by punching one magnetic plate and bending the substantially V-shaped flat plate with respect to the substantially rectangular flat plate, which facilitates manufacturing.
【００２２】請求項３の消弧装置は、請求項１，２にお
いて、前記磁性体部および前記接続部の外面が略Ｕ字形
に折曲された絶縁板により被覆されているため、消弧装
置および接点を収納する成形品のケースをアーク熱に対
して保護することができる。The arc extinguishing device according to claim 3 is the arc extinguishing device as claimed in claims 1 and 2, wherein the outer surfaces of the magnetic body portion and the connecting portion are covered with an insulating plate bent in a substantially U shape. It is possible to protect the case of the molded product that houses the contacts and the contacts against arc heat.
【図１】この発明の第１の実施例の使用状態の斜視図で
ある。FIG. 1 is a perspective view of a first embodiment of the present invention in use.
【図２】アークが発生した状態の説明図である。FIG. 2 is an explanatory diagram of a state in which an arc is generated.
【図３】アークが転流した状態の説明図である。FIG. 3 is an explanatory diagram of a state in which an arc commutates.
【図４】アークが電磁路に飛び移った状態の説明図であ
る。FIG. 4 is an explanatory diagram of a state where an arc jumps to an electromagnetic path.
【図５】そのＡ−Ａ線断面図である。FIG. 5 is a sectional view taken along the line AA.
【図６】そのアークが電磁路を走行している途中の説明
図である。FIG. 6 is an explanatory diagram during the course of the arc traveling on an electromagnetic path.
【図７】消弧装置の展開状態の平面図である。FIG. 7 is a plan view of the arc extinguishing device in a developed state.
【図８】アーク電流およびアーク電圧の波形図である。FIG. 8 is a waveform diagram of an arc current and an arc voltage.
【図９】第２の実施例の斜視図である。FIG. 9 is a perspective view of a second embodiment.
【図１０】分解斜視図である。FIG. 10 is an exploded perspective view.
【図１１】第１の従来例の斜視図である。FIG. 11 is a perspective view of a first conventional example.
【図１２】第２の従来例の斜視図である。FIG. 12 is a perspective view of a second conventional example.
【図１３】アークが発生した状態の説明図である。FIG. 13 is an explanatory diagram of a state in which an arc is generated.
【図１４】そのアーク電流およびアーク電圧の波形図で
ある。FIG. 14 is a waveform diagram of the arc current and arc voltage.
１，２ 磁性体部 ３ 接続部 ４ アーク転流部 ６，７ 電磁路 1, 2 Magnetic body part 3 Connection part 4 Arc commutation part 6, 7 Electromagnetic path
───────────────────────────────────────────────────── フロントページの続き (72)発明者 青山 洋一 大阪府門真市大字門真1048番地 松下電 工株式会社内 (72)発明者 松岡 幸弘 大阪府門真市大字門真1048番地 松下電 工株式会社内 (72)発明者 広島 達男 大阪府門真市大字門真1048番地 松下電 工株式会社内 (56)参考文献 実開 昭63−80751（ＪＰ，Ｕ) 実開 昭63−167646（ＪＰ，Ｕ) 特公 昭55−12691（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoichi Aoyama 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor, Yukihiro Matsuoka, 1048, Kadoma, Kadoma City, Osaka Matsushita Electric Works, Ltd. ( 72) Inventor, Tatsuo Hiroshima, 1048, Kadoma, Kadoma City, Osaka Prefecture, Matsushita Electric Works, Ltd. (56) References: 63-80751 (JP, U): 63-167646 (JP, U) 55-12691 (JP, B2)
Claims (3)
一対の側部からなるＵ字形であって相対向した一対の磁
性体部と、これらの磁性体部の前記側部の相対向する方
向の先端部相互を接続する接続部とを備えた消弧装置。1. A and arc commutation unit to become the bottom portion and a pair of the magnetic body portion which is opposed to a U-shaped comprising a pair of side portions serving as an electromagnetic path, opposite the sides of these magnetic portion An arc extinguishing device, comprising: a connecting portion that connects the front end portions in the same direction.
はそれぞれ略矩形平板により形成され、前記一対の磁性
体部の前記電磁路および前記接続部はそれぞれ略Ｖ字形
平板により一体に形成され、かつ前記略Ｖ字形平板の両
端部が前記略矩形平板の各側部にまたがるように前記略
Ｖ字形平板が前記略矩形平板の両側に一体に連続してい
る請求項１記載の消弧装置。2. The arc commutation portions of the pair of magnetic body portions are each formed of a substantially rectangular flat plate, and the electromagnetic paths and the connection portions of the pair of magnetic body portions are integrally formed of a substantially V-shaped flat plate. The arc-extinguishing plate according to claim 1, wherein the substantially V-shaped flat plate is integrally continuous with both sides of the substantially rectangular flat plate so that both ends of the substantially V-shaped flat plate straddle each side of the substantially rectangular flat plate. apparatus.
は、略Ｕ字形に折曲された絶縁板により被覆されている
請求項１または請求項２記載の消弧装置。3. The arc extinguishing device according to claim 1, wherein outer surfaces of the magnetic body portion and the connecting portion are covered with an insulating plate bent in a substantially U shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3172313A JP2525972B2 (en) | 1991-07-12 | 1991-07-12 | Arc extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3172313A JP2525972B2 (en) | 1991-07-12 | 1991-07-12 | Arc extinguishing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0520954A JPH0520954A (en) | 1993-01-29 |
| JP2525972B2 true JP2525972B2 (en) | 1996-08-21 |
Family
ID=15939603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3172313A Expired - Lifetime JP2525972B2 (en) | 1991-07-12 | 1991-07-12 | Arc extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2525972B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2431181A2 (en) * | 1978-07-10 | 1980-02-08 | Merlin Gerin | CIRCUIT BREAKER HAVING AN INERTIA TIMER |
| JPS6380751U (en) * | 1986-11-14 | 1988-05-27 | ||
| JPH0525154Y2 (en) * | 1987-04-20 | 1993-06-25 |
-
1991
- 1991-07-12 JP JP3172313A patent/JP2525972B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0520954A (en) | 1993-01-29 |
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