JPH0474815B2 - - Google Patents
Info
- Publication number
- JPH0474815B2 JPH0474815B2 JP59169395A JP16939584A JPH0474815B2 JP H0474815 B2 JPH0474815 B2 JP H0474815B2 JP 59169395 A JP59169395 A JP 59169395A JP 16939584 A JP16939584 A JP 16939584A JP H0474815 B2 JPH0474815 B2 JP H0474815B2
- Authority
- JP
- Japan
- Prior art keywords
- arc
- electrode
- contact
- fixed
- movable electrode
- 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
Links
- 239000012212 insulator Substances 0.000 claims description 3
- 210000001015 abdomen Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、開閉器に関するものであり、もう
少し詳しくいうと、少なくとも１対の接触子が、
アークを冷却する消弧板とともに、絶縁体でなる
包囲体に収納され、かつ、固定接触子にアークラ
ンナが取付けられてなる開閉器に関するものであ
る。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a switch, and more specifically, at least one pair of contacts,
This invention relates to a switch that is housed in an enclosure made of an insulator together with an arc extinguishing plate that cools the arc, and has an arc runner attached to a fixed contact.
第１図および第２図は従来のこの種の開閉器を
示し、対向配置された固定電極１および可動電極
２に、それぞれ固定接点３および可動接点４が取
着されていて、１対の接触子を構成している。操
作機構部５には可動電極２の基端が結合されてい
て、可動電極２が回動動作される。電極１，２の
間には、接点３，４間に生じるアークを冷却する
ための消弧板６が配設されている。包囲体７は絶
縁体でなり、開閉器の動作部分を収納している。
包囲体７には、アークあるいはホツトガスの排出
口８が設けられている。固定電極１にはアークラ
ンナ９が取付けられている。
FIGS. 1 and 2 show a conventional switch of this type, in which a fixed electrode 1 and a movable electrode 2 are respectively attached to a fixed contact 3 and a movable contact 4, and a pair of contact constitutes a child. The base end of the movable electrode 2 is coupled to the operating mechanism section 5, and the movable electrode 2 is rotated. An arc extinguishing plate 6 is disposed between the electrodes 1 and 2 to cool the arc generated between the contacts 3 and 4. The enclosure 7 is made of an insulator and houses the operating parts of the switch.
The enclosure 7 is provided with an arc or hot gas outlet 8. An arc runner 9 is attached to the fixed electrode 1.
以上の構成により、いま、第３図に示すように
可動接点４が固定接点３に接触していると、電力
は、電源から固定電極１→固定接点３→可動接点
４→可動電極２と経由し、負荷側へ供給される。
この状態のとき、短絡電流のような大電流が接触
子間に流れると、操作機構部５が動作して可動接
点４を固定接点３から開離させる。このとき、第
４図および第５図に示すように、固定接点３と可
動接点４との間にはアークＡが発生し、固定接点
３と可動接点４間にアーク電圧があらわれる。こ
のアーク電圧は、固定接点３に対する可動接点４
の開離距離が増大するに伴つて上昇する。また、
同時に、アークＡは消弧板６側へ磁気力によつて
引付けられて伸長するので、アーク電圧はさらに
上昇する。そうして、アーク電流の電流零点を迎
えてアークＡが消弧され、電流が遮断される。 With the above configuration, when the movable contact 4 is now in contact with the fixed contact 3 as shown in FIG. and is supplied to the load side.
In this state, when a large current such as a short-circuit current flows between the contacts, the operating mechanism section 5 operates to separate the movable contact 4 from the fixed contact 3. At this time, as shown in FIGS. 4 and 5, an arc A is generated between the fixed contact 3 and the movable contact 4, and an arc voltage appears between the fixed contact 3 and the movable contact 4. This arc voltage is applied to the movable contact 4 relative to the fixed contact 3.
increases as the separation distance increases. Also,
At the same time, the arc A is drawn toward the arc-extinguishing plate 6 by the magnetic force and extends, so that the arc voltage further increases. Then, the arc current reaches its zero point, the arc A is extinguished, and the current is interrupted.
以上の動作を、電流遮断時を示す第５図によつ
て、さらに詳しく考察すると、可動電極２は回動
中心１０を中心として回動動作し、開極する。こ
の開極動作において、可動電極２と固定電極１の
間の空間的距離は、可動電極２の腹部２ａと固定
電極１の先端部１ａ間の距離がもつとも短い。一
方、可動接点４と固定接点３の間に生じたアーク
Ａは、固定電極１を流れる電流I1と可動電極２を
流れる電流I2から電磁力を受け、その合成力とし
て矢印Ｆの方向の力を受ける。しかし、この電磁
力は、電極構造が、第３図のように閉成時に電流
が直線状に流れるものであるため比較的小さく、
したがつて、一般には、アークＡは可動電極２の
開極動作に伴い、可動接点４と固定接点３の間の
位置から、可動電極２の腹部２ａと固定電極１の
先端部１ａの間の短い距離の位置に移動し、そこ
で停滞する。そのため、図において、接点３，４
よりも右側に位置する消弧板６にアークＡが接触
せず、アークＡが冷却されないこととなり、所望
の遮断性能が得られないという問題があつた。 Considering the above operation in more detail with reference to FIG. 5, which shows the state when the current is cut off, the movable electrode 2 rotates about the rotation center 10 and opens. In this electrode opening operation, the spatial distance between the movable electrode 2 and the fixed electrode 1 is shorter than the distance between the abdomen 2a of the movable electrode 2 and the tip 1a of the fixed electrode 1. On the other hand, the arc A generated between the movable contact 4 and the fixed contact 3 receives an electromagnetic force from the current I 1 flowing through the fixed electrode 1 and the current I 2 flowing through the movable electrode 2, and as a resultant force, the arc A generates in the direction of arrow F. Receive power. However, this electromagnetic force is relatively small because the electrode structure allows current to flow linearly when closed as shown in Figure 3.
Therefore, in general, as the movable electrode 2 opens, the arc A moves from a position between the movable contact 4 and the fixed contact 3 to between the abdomen 2a of the movable electrode 2 and the tip 1a of the fixed electrode 1. Move to a short distance and stay there. Therefore, in the figure, contacts 3 and 4
There was a problem in that the arc A did not come into contact with the arc extinguishing plate 6 located on the right side, and the arc A was not cooled, making it impossible to obtain the desired interrupting performance.
また、上述したような、特に腹部２ａと先端部
１ａ間の距離が短いものでなくても、アーク経路
が、固定接点３と可動接点４の間の距離がもつと
も短い構造のものが多く、この場合はアークＡが
接点３，４間に停滞する。そうして、アークＡは
消弧板６による冷却は受けられても、接点上のア
ークの停滞による接点消耗が助長され、開閉器遮
断容量の格上げに関して重大な支障を来たしてい
た。 Furthermore, even if the distance between the abdomen 2a and the tip 1a is not particularly short as described above, there are many structures in which the arc path is short even if the distance between the fixed contact 3 and the movable contact 4 is short. In this case, arc A stagnates between contacts 3 and 4. In this way, even though the arc A was cooled by the arc extinguishing plate 6, contact wear was accelerated due to the stagnation of the arc on the contact, causing a serious problem in upgrading the breaking capacity of the switch.
この発明は、以上のような従来のものの欠点を
解消しようとするもので、アークランナの中央部
に切欠き溝を設け、接触子閉成時に可動電極の一
部が切欠き溝内に位置するように構成したことに
より、アークの足の電流零点における位置を好適
に制御し、消弧板の機能を有効に発揮させるよう
にし、電流遮断性能にすぐれ、かつ、接点の消耗
を極小になしうる開閉器を提供する。
This invention is an attempt to eliminate the above-mentioned drawbacks of the conventional products.A notch groove is provided in the center of the arc runner so that a part of the movable electrode is located within the notch groove when the contactor is closed. By configuring this, the position of the arc foot at the current zero point can be suitably controlled, the function of the arc extinguishing plate can be effectively demonstrated, and the opening/closing system has excellent current interrupting performance and can minimize wear and tear on the contacts. Provide utensils.
第６図、第７図および第８図はこの発明の一実
施例を示し、第６図、第７図において、固定接点
１３が取着された固定電極１１に取付けられるア
ークランナ１９は、ほぼ横Ｕ字状をなし、その下
辺１９ａにおいて適宜の締着部材２０により固定
電極１１に取着されている。アークランナ１９の
上辺１９ｂには中央部に切欠き溝１９ｃが形成さ
れており、この切欠き溝１９ｃは上辺１９ｂの上
端近くからアークランナの湾曲部にまで延びてい
る。
6, 7, and 8 show an embodiment of the present invention, and in FIGS. 6 and 7, the arc runner 19 attached to the fixed electrode 11 to which the fixed contact 13 is attached is substantially horizontal. It has a U-shape and is attached to the fixed electrode 11 at its lower side 19a with a suitable fastening member 20. A notch groove 19c is formed in the center of the upper side 19b of the arc runner 19, and the notch groove 19c extends from near the upper end of the upper side 19b to the curved portion of the arc runner.
第８図は以上の構成になる固定電極１１と可動
電極１２との結合構成を示し、可動接点１４を備
えた可動電極１２は、回動軸１０に関して回動さ
れるもので、その先端部１２ａは可動接点１４の
位置よりも適宜に延出してアークホーンを形成し
ている。先端部１２ａの一部は電極閉成時には切
欠き溝１９ｃと重なり合つている。消弧板１６は
従来のものと同様であり、アークランナ１９の上
辺１９ｂは消弧板１６側に斜めに立上つている。 FIG. 8 shows a combined structure of the fixed electrode 11 and the movable electrode 12 having the above-described structure. extends appropriately beyond the position of the movable contact 14 to form an arcing horn. A portion of the tip 12a overlaps the notch groove 19c when the electrode is closed. The arc extinguishing plate 16 is similar to the conventional one, and the upper side 19b of the arc runner 19 stands obliquely toward the arc extinguishing plate 16 side.
その他、開閉器全体の構成は、まえにみた従来
のものと同様であり、説明を省略する。 Other than that, the overall structure of the switch is the same as that of the conventional switch seen above, and a description thereof will be omitted.
次に動作について説明する。 Next, the operation will be explained.
第８図に示す電極閉成状態から可動電極１２が
揺動して開極動作の開始により、第９図に示すよ
うに固定接点１３と可動接点１４との間にアーク
Ａが発生する。一方、電極閉成時に可動電極１２
の先端部１２ａの一部がアークランナ１９の切欠
き溝１９ｃに重なりあつているので、このような
場合には、第９図に示す開極初期のある時点以降
において、接点間距離以下になる部分が、先端部
１２ａとアークランナ１９の一部に存在しうるこ
とになる。このように、距離の短い部分は、先端
部１２ａと切欠き溝１９ｃの上端部１９ｄとの間
の部位ということになる。そのため、接点間に生
じたアークＡは上記の部位に転移し、アークＢと
なる。 When the movable electrode 12 swings from the electrode closed state shown in FIG. 8 and starts an opening operation, an arc A is generated between the fixed contact 13 and the movable contact 14 as shown in FIG. 9. On the other hand, when the electrode is closed, the movable electrode 12
Since a part of the tip 12a of the arc runner 19 overlaps with the notch groove 19c of the arc runner 19, in such a case, after a certain point in the initial stage of contact shown in FIG. may exist in the tip portion 12a and a portion of the arc runner 19. In this way, the short distance portion is the portion between the tip portion 12a and the upper end portion 19d of the notch groove 19c. Therefore, the arc A generated between the contacts is transferred to the above-mentioned portion and becomes the arc B.
さらに開極が進むと、第１０図に示すように、
アークＢは、アークランナ１９を流れる電流I1に
よつて電磁反発力を受けて消弧板１６に強く押し
つけられ、冷却される。また、可動電極１２の先
端部１２ａはアークホーンとして機能するので、
アークＢの足は可動接点１４から遠ざかり、接点
消耗が大幅に低減される。 As the electrode opening progresses further, as shown in Figure 10,
The arc B is strongly pressed against the arc extinguishing plate 16 by the electromagnetic repulsion force caused by the current I 1 flowing through the arc runner 19, and is cooled. Furthermore, since the tip portion 12a of the movable electrode 12 functions as an arc horn,
The legs of the arc B move away from the movable contact 14, and contact wear is significantly reduced.
第１１図および第１２図は他の実施例を示し、
固定接点１３がアークランナ１９の切欠き溝１９
ｃ内に位置する構成になるものである。 11 and 12 show other embodiments,
The fixed contact 13 is located in the notch groove 19 of the arc runner 19.
The configuration is located within c.
第１３図および第１４図はさらに他の実施例を
示し、アークランナ１９を固定電極１１の裏面に
固着した構成になるものである。 FIGS. 13 and 14 show still another embodiment, in which an arc runner 19 is fixed to the back surface of the fixed electrode 11.
いずれも同様の効果が得られる。 The same effect can be obtained in either case.
なお、接触子は１対に限らず複数対であつても
同様である。 Note that the number of contacts is not limited to one pair, and the same applies even if there are multiple pairs.
以上のように、この発明は、開極時に発生する
アークの冷却を促進して遮断性能を著しく向上
し、接点の消耗を軽減しうる効果がある。
As described above, the present invention has the effect of promoting the cooling of the arc generated during contact opening, significantly improving the interrupting performance, and reducing wear and tear on the contacts.
第１図〜第５図は従来の開閉器を示し、第１図
は一部断面平面図、第２図は第１図の−線に
沿う平面での断面図、第３図は要部側面図、第４
図は動作説明のための一部断面側面図、第５図は
動作説明のための要部側面図である。第６図〜第
１０図はこの発明の一実施例の要部を示し、第６
図は分解斜視図、第７図は斜視図、第８図は側面
図、第９図および第１０図はそれぞれ動作説明の
ための側面図である。第１１図および第１２図は
他の実施例の要部の側面図および斜視図、第１３
図および第１４図はさらに他の実施例の要部の側
面図および斜視図である。
５……操作機構部、７……包囲体、１１……固
定電極、１２……可動電極、１２ａ……先端部
（アークホーン）、１３……固定接点、１４……可
動接点、１６……消弧板、１９……アークラン
ナ、１９ｃ……切欠き溝。なお、各図中、同一符
号と同一又は相当部分を示す。
Figures 1 to 5 show a conventional switch. Figure 1 is a partially sectional plan view, Figure 2 is a sectional view taken along the - line in Figure 1, and Figure 3 is a side view of the main part. Figure, 4th
The figure is a partially sectional side view for explaining the operation, and FIG. 5 is a side view of the main part for explaining the operation. 6 to 10 show main parts of an embodiment of the present invention, and FIG.
The figure is an exploded perspective view, FIG. 7 is a perspective view, FIG. 8 is a side view, and FIGS. 9 and 10 are side views for explaining the operation. 11 and 12 are side views and perspective views of main parts of another embodiment, and FIG.
This figure and FIG. 14 are a side view and a perspective view of essential parts of still another embodiment. 5... Operating mechanism section, 7... Envelope, 11... Fixed electrode, 12... Movable electrode, 12a... Tip (arc horn), 13... Fixed contact, 14... Movable contact, 16... Arc extinguishing plate, 19...Arc runner, 19c...Notch groove. In each figure, the same reference numerals indicate the same or equivalent parts.
Claims (1)
電流径路がほぼ直線状になるように配置された固
定電極および揺動可能の可動電極と、前記接点の
開動作時に発生するアークを冷却する消弧板と、
前記固定電極に取着されたアークランナと、前記
可動電極の先端を延長して形成されたアークホー
ンと、絶縁体でなる包囲体とを備えた開閉器にお
いて、 下辺が前記固定電極に固定され、上辺が前記消
弧板側に斜めに立上つた横Ｕ字形をなし、かつ、
前記接点の閉成時に前記アークホーンが内側に位
置する切欠き溝が前記上辺の中央部に形成された
前記アークランナを備えてなることを特徴とする
開閉器。[Scope of Claims] 1. A fixed electrode and a swingable movable electrode to which contacts are respectively attached and arranged so that a current path becomes approximately straight when the contact is closed, and a fixed electrode and a swingable movable electrode that an arc extinguishing plate that cools the arc;
In a switch including an arc runner attached to the fixed electrode, an arc horn formed by extending the tip of the movable electrode, and an enclosure made of an insulator, the lower side is fixed to the fixed electrode, The upper side forms a horizontal U-shape that rises diagonally toward the arc-extinguishing plate, and
A switch characterized in that the arc runner is provided with a notch groove formed in the center of the upper side, in which the arc horn is located when the contact is closed.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59169395A JPS6149342A (en) | 1984-08-15 | 1984-08-15 | Switch |
| FR858506594A FR2569304B1 (en) | 1984-08-15 | 1985-04-30 | CIRCUIT SWITCH |
| US06/732,071 US4642428A (en) | 1984-08-15 | 1985-05-09 | Circuit interrupter |
| CH2096/85A CH677045A5 (en) | 1984-08-15 | 1985-05-15 | |
| GB08514651A GB2163293B (en) | 1984-08-15 | 1985-06-10 | Circuit-breaker arc control |
| IT5351385U IT8553513V0 (en) | 1984-08-15 | 1985-06-14 | SWITCH FOR LOW VOLTAGE ELECTRIC CIRCUITS |
| IT67560/85A IT1199890B (en) | 1984-08-15 | 1985-06-14 | SWITCH FOR LOW VOLTAGE ELECTRIC CIRCUITS |
| KR1019850004257A KR890003377B1 (en) | 1984-08-15 | 1985-06-15 | Circuit interrupter |
| DE19853528196 DE3528196A1 (en) | 1984-08-15 | 1985-08-06 | DISCONNECTOR |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59169395A JPS6149342A (en) | 1984-08-15 | 1984-08-15 | Switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6149342A JPS6149342A (en) | 1986-03-11 |
| JPH0474815B2 true JPH0474815B2 (en) | 1992-11-27 |
Family
ID=15885801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59169395A Granted JPS6149342A (en) | 1984-08-15 | 1984-08-15 | Switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6149342A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5814441A (en) * | 1981-07-17 | 1983-01-27 | 三菱電機株式会社 | Circuit breaker |
| JPS5828151A (en) * | 1981-08-12 | 1983-02-19 | 三菱電機株式会社 | Circuit breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5431874Y2 (en) * | 1974-10-11 | 1979-10-04 |
-
1984
- 1984-08-15 JP JP59169395A patent/JPS6149342A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5814441A (en) * | 1981-07-17 | 1983-01-27 | 三菱電機株式会社 | Circuit breaker |
| JPS5828151A (en) * | 1981-08-12 | 1983-02-19 | 三菱電機株式会社 | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6149342A (en) | 1986-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |