JPS629638Y2 - - Google Patents
Info
- Publication number
- JPS629638Y2 JPS629638Y2 JP17563779U JP17563779U JPS629638Y2 JP S629638 Y2 JPS629638 Y2 JP S629638Y2 JP 17563779 U JP17563779 U JP 17563779U JP 17563779 U JP17563779 U JP 17563779U JP S629638 Y2 JPS629638 Y2 JP S629638Y2
- Authority
- JP
- Japan
- Prior art keywords
- arc
- contact
- arc extinguishing
- extinguishing device
- groove
- 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
Links
- 239000000843 powder Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 239000004489 contact powder Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Breakers (AREA)
Description
【考案の詳細な説明】
この考案は回路しや断器等に使用する消弧装置
に関するものである。[Detailed description of the invention] This invention relates to an arc extinguishing device used for circuits, disconnectors, etc.
この種の消弧装置は第１図ないし第３図に示す
ように、消弧室Ａ内に設けられた発弧部Ｘとグリ
ツド１で形成された消弧部Ｙからなり、両者間の
上下をアーク走行板２，３で連接して、アークを
グリツド１へ移行させ、ここで分断消弧して排気
孔４よりガス排気するものである。 As shown in Figures 1 to 3, this type of arc extinguishing device consists of an arc extinguishing part X provided in an arc extinguishing chamber A and an arc extinguishing part Y formed by a grid 1. are connected by arc traveling plates 2 and 3, the arc is transferred to grid 1, where it is divided and extinguished, and gas is exhausted from exhaust hole 4.
そして、従来の発弧部Ｘは、固定接点５を有す
る固定接触子６に可動接点７を有する可動接触子
８を対峙し、その両側部に側板９，１０を配設し
て、接点開離による発弧時に発生した電離ガスが
逃散するのを防止し、これによつて接点近傍のガ
ス圧勾配によるアークの走行板への移行を促進
し、接点５，７でのアークこう着を防いでいる。 The conventional arcing part This prevents the ionized gas generated during arcing from escaping, thereby promoting the transfer of the arc to the traveling plate due to the gas pressure gradient near the contacts, and preventing arc sticking at contacts 5 and 7. There is.
ところが、接点開離時に第３図のように接点
５，７より飛散する接点消耗粉が側板９，１０に
付着し（Ｐで表示）、また可動接点７の投入時、
接点表面層の溶融金属が突起状に生成、成長し
（Ｑで表示）、この突起Ｑが側板９，１０を接する
ほどになると、経路すなわち固定接点５、側板
９，１０の消耗粉Ｐ、突起Ｑおよび可動接点７と
いう経路が形成され、絶縁耐圧が低下するという
欠点がある。 However, when the contacts are opened, as shown in Fig. 3, contact consumable powder that scatters from the contacts 5 and 7 adheres to the side plates 9 and 10 (indicated by P), and when the movable contact 7 is turned on,
The molten metal on the contact surface layer forms and grows in the shape of a protrusion (indicated by Q), and when this protrusion Q comes into contact with the side plates 9 and 10, the path, that is, the fixed contact 5, the consumable powder P of the side plates 9 and 10, and the protrusion A path of Q and movable contact 7 is formed, which has the disadvantage of lowering the dielectric strength.
したがつて、この考案の目的は、この絶縁耐圧
の低下を防止した消弧装置を提供することであ
る。 Therefore, an object of this invention is to provide an arc extinguishing device that prevents this reduction in dielectric strength voltage.
この考案は、可動接点と固定接点よりなる接点
部と、消弧グリツドとを一対のアーク走行板で接
続し、かつアーク走行板の両側を絶縁側板で閉塞
して前記接点部で発生したアークのアークガスを
前記消弧グリツドの後方より排気するようにした
消弧装置において、前記絶縁側板の前記接点部で
開極状態の可動接点と固定接点との間に溝を形成
したことを特徴とする。すなわち、その溝によ
り、沿面距離を確保することができ、しかも溝の
側面に接点粉の飛散方向の影となる部分が生じる
ので、絶縁が確実になる。 This idea connects a contact section consisting of a movable contact and a fixed contact to an arc extinguishing grid through a pair of arc running plates, and closes both sides of the arc running plate with insulating side plates to suppress the arc generated at the contact section. In the arc extinguishing device in which arc gas is exhausted from the rear of the arc extinguishing grid, a groove is formed between a movable contact in an open state and a fixed contact at the contact portion of the insulating side plate. That is, the groove makes it possible to secure a creepage distance, and since a shadow portion is formed on the side surface of the groove in the direction in which the contact powder is scattered, insulation is ensured.
この考案の第１の実施例を第４図に示す。すな
わち、この消弧装置は、側板９，１０の一端部に
コ字形の絶縁体１１，１２を付設して溝Ｍを形成
し、絶縁体１１，１２を開離状態の可動接触子８
の近傍に配置している。その他の構成は第１図お
よび第２図と同様である。 A first embodiment of this invention is shown in FIG. That is, in this arc extinguishing device, U-shaped insulators 11 and 12 are attached to one end of the side plates 9 and 10 to form a groove M, and a movable contact 8 with the insulators 11 and 12 in an open state is formed.
It is located near. The other configurations are the same as those in FIGS. 1 and 2.
このように構成したため、開離状態の固定接点
５と可動接点７間は側板９，１０および絶縁体１
１，１２により密閉化されるので、ガス逃散がな
く、ガス圧低下によるアークの走行阻害がないと
ともに、開離時に飛散する消耗粉は溝Ｍの一側面
ｍが接点接触位置に対して影部分となるので、こ
の部分が固定接触子６と可動接触子８の間で消耗
粉の付着しない部分となり、絶縁沿面距離が大と
なるので、開離時の絶縁を確保できる。 With this configuration, the side plates 9 and 10 and the insulator 1 are connected between the fixed contact 5 and the movable contact 7 in the open state.
1 and 12, there is no gas escaping, and there is no inhibition of arc travel due to a drop in gas pressure, and consumable powder that scatters when opening is removed from the area where one side m of the groove M is in the shadow with respect to the contact contact position. Therefore, this part becomes a part between the fixed contactor 6 and the movable contactor 8 to which consumable powder does not adhere, and the insulation creeping distance becomes large, so that the insulation at the time of separation can be ensured.
この考案の第２の実施例を第５図および第６図
に示す。すなわち、この消弧装置は、前記コ字形
の絶縁体１１，１２を前記側板９，１０の一端部
でやや内方に取付けて、一端部９ａ，１０ａが溝
Ｍに突出することにより、第１の実施例よりも絶
縁沿面距離および消耗粉の付着しない部分の拡大
を図つている。その他は第１図および第２図と同
様である。 A second embodiment of this invention is shown in FIGS. 5 and 6. That is, in this arc extinguishing device, the U-shaped insulators 11 and 12 are attached slightly inward at one end of the side plates 9 and 10, and the one ends 9a and 10a protrude into the groove M. The insulation creepage distance and the area to which consumable powder does not adhere are increased compared to the embodiment shown in FIG. Others are the same as in FIGS. 1 and 2.
以上のように、この考案の消弧装置は、側板に
溝を設けるという簡単な構成により、アーク走行
を阻害することなく、消耗粉による絶縁耐圧の低
下を防止できるという効果を有する。 As described above, the arc extinguishing device of this invention has the effect of preventing a decrease in dielectric strength due to consumable powder without hindering arc travel due to the simple structure of providing a groove in the side plate.
第１図は従来の消弧装置の分解斜視図、第２図
はその消弧装置を適用したブレーカの部分断面側
面図、第３図は消弧装置の部分横断面図、第４図
はこの考案の第１の実施例の部分横断面図、第５
図は第２の実施例の部分横断面図、第６図はその
側板の斜視図である。
１……消弧グリツド、２，３……アーク走行
板、４……排気孔、５……固定接点、６……固定
接触子、７……可動接点、８……可動接触子、
９，１０……側板、１１，１２……コ字形絶縁
板、Ｍ……溝。
Fig. 1 is an exploded perspective view of a conventional arc extinguishing device, Fig. 2 is a partial cross-sectional side view of a breaker to which the arc extinguishing device is applied, Fig. 3 is a partial cross-sectional view of the arc extinguishing device, and Fig. 4 is a partial cross-sectional view of the breaker to which the arc extinguishing device is applied. Partial cross-sectional view of the first embodiment of the invention, fifth
The figure is a partial cross-sectional view of the second embodiment, and FIG. 6 is a perspective view of its side plate. 1... Arc extinguishing grid, 2, 3... Arc traveling plate, 4... Exhaust hole, 5... Fixed contact, 6... Fixed contact, 7... Movable contact, 8... Movable contact,
9, 10... Side plate, 11, 12... U-shaped insulating plate, M... Groove.
Claims (1)
リツドとを一対のアーク走行板で接続し、かつア
ーク走行板の両側を絶縁側板で閉塞して前記接点
部で発生したアークのアークガスを前記消弧グリ
ツドの後方より排気するようにした消弧装置にお
いて、前記絶縁側板の前記接点部側で開極状態の
可動接点と固定接点との間に溝を形成したことを
特徴とする消弧装置。 A contact section consisting of a movable contact and a fixed contact and an arc extinguishing grid are connected by a pair of arc running plates, and both sides of the arc running plate are closed with insulating side plates to drain the arc gas of the arc generated at the contact section. An arc extinguishing device configured to exhaust air from the rear of an arc grid, characterized in that a groove is formed between a movable contact in an open state and a fixed contact on the contact portion side of the insulating side plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17563779U JPS629638Y2 (en) | 1979-12-14 | 1979-12-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17563779U JPS629638Y2 (en) | 1979-12-14 | 1979-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5690350U JPS5690350U (en) | 1981-07-18 |
| JPS629638Y2 true JPS629638Y2 (en) | 1987-03-06 |
Family
ID=29686297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17563779U Expired JPS629638Y2 (en) | 1979-12-14 | 1979-12-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629638Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6325642Y2 (en) * | 1981-04-06 | 1988-07-13 |
-
1979
- 1979-12-14 JP JP17563779U patent/JPS629638Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5690350U (en) | 1981-07-18 |
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