JPH026170B2 - - Google Patents
Info
- Publication number
- JPH026170B2 JPH026170B2 JP57197059A JP19705982A JPH026170B2 JP H026170 B2 JPH026170 B2 JP H026170B2 JP 57197059 A JP57197059 A JP 57197059A JP 19705982 A JP19705982 A JP 19705982A JP H026170 B2 JPH026170 B2 JP H026170B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- fixed contact
- arc
- fixed
- arc runner
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 101100537937 Caenorhabditis elegans arc-1 gene Proteins 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/46—Means for extinguishing or preventing arc between current-carrying parts using arcing horns
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【発明の詳細な説明】
本発明は電流の開閉を行う開閉器、特にその消
弧機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch that switches on and off current, and particularly to an arc extinguishing mechanism thereof.
本発明の主たる適用開閉器として電磁接触器や
配線用しや断器を挙げることができる。 The main applicable switches of the present invention include electromagnetic contactors and wiring breakers.
まず第１図に従つて従来の電磁接触器の１例に
ついて説明する。なお、第１図の電磁接触器は左
右対称である。第１図において、１はプラスチツ
クで成形された取付台、２はこの取付台上にケイ
素鋼板で積層された固定鉄心、３は固定鉄心２に
対向して設置されこれと同じくケイ素鋼板で積層
された可動鉄心、４は可動鉄心３と固定鉄心２と
を引外しばね（図示せず）に抗して吸着させる駆
動力を付与する操作コイル、５はプラスチツクで
形成され、角窓を有するクロスバーで、その下端
では可動鉄心３を保持している。６は上記クロス
バー５の角窓に挿入されて押しばね７により押圧
保持されている可動接触子、６Ａは可動接触子６
に設けられた可動接点、８は可動接触子６と対向
して設けられ、電流を導通させる固定接触子、８
Ａはこの固定接触子８に設けられた固定接点、８
Ｃは同じくこの固定接触子８の端子部を示す。 First, an example of a conventional electromagnetic contactor will be explained with reference to FIG. Note that the electromagnetic contactor shown in FIG. 1 is symmetrical. In Fig. 1, 1 is a mounting base made of plastic, 2 is a fixed iron core laminated with silicon steel plates on this mount, and 3 is a fixed iron core installed opposite to the fixed iron core 2, which is also laminated with silicon steel plates. 4 is an operating coil that provides a driving force to attract the movable core 3 and the fixed core 2 against a tripping spring (not shown); 5 is a cross bar made of plastic and having a square window; A movable iron core 3 is held at its lower end. Reference numeral 6 denotes a movable contact which is inserted into the corner window of the cross bar 5 and is pressed and held by a pressing spring 7, and 6A is a movable contact 6.
A movable contact 8 provided on the movable contact 6 is a fixed contact 8 provided opposite to the movable contact 6 to conduct current.
A is a fixed contact provided on this fixed contact 8,
Similarly, C indicates a terminal portion of this fixed contactor 8.
然して、９は電磁接触器本体を外部回路と接続
するための端子ねじ、１０は固定接触子８を取付
けるベース、１１は電磁接触子上面を覆うカバー
である。そして固定接触子８と固定接点８Ａとの
取付態様は第２図に拡大して示す如くである。 9 is a terminal screw for connecting the electromagnetic contactor main body with an external circuit, 10 is a base on which the fixed contact 8 is attached, and 11 is a cover that covers the upper surface of the electromagnetic contact. The manner in which the fixed contact 8 and the fixed contact 8A are attached is shown in an enlarged manner in FIG.
上記構成を有するため、この従来の電磁接触器
において、操作コイル４を消磁すると、図示され
ない引外しばねにより可動鉄心３が固定鉄心２よ
り開離し、クロスバー５も、第１図に示す状態を
占め、固定接点８Ａと可動接点６Ａとが開離して
固定接点８Ａと可動接点６Ａとの間にアーク１２
が生じるが、このアーク１２は電流零点において
消弧され電流がしや断されることになる。 With the above configuration, in this conventional electromagnetic contactor, when the operation coil 4 is demagnetized, the movable core 3 is separated from the fixed core 2 by a tripping spring (not shown), and the crossbar 5 also returns to the state shown in FIG. When the fixed contact 8A and the movable contact 6A open, an arc 12 is generated between the fixed contact 8A and the movable contact 6A.
However, this arc 12 is extinguished at the current zero point, and the current is suddenly cut off.
ところで、従来の電磁接触器においては第３図
に示すように、アーク１２は、可動接触子６の導
通電流Ｉが作る磁界に基づく駆動力F2と、固定
接触子８の導通電流Ｉが作る磁界に基づく駆動力
F1とを受けるが、これらF1とF2の大きさがほぼ
同一で向きが逆であるため、アーク１２は可動接
点６Ａと固定接点８Ａの上で膠着することにな
る。このように、アーク１２の駆動が行われない
ので、従来の電磁接触器においては良好なしや断
性能が得られず、また、アークの足が接点外に転
移されないため、接点消耗が多いという欠点を有
していた。 By the way, in a conventional electromagnetic contactor, as shown in FIG . Driving force based on magnetic field
However, since these F 1 and F 2 are approximately the same in size and opposite in direction, the arc 12 will stick on the movable contact 6A and the fixed contact 8A. In this way, since the arc 12 is not driven, conventional electromagnetic contactors cannot obtain good breakage performance, and also have the disadvantage of high contact wear because the arc foot is not transferred to the outside of the contact. It had
本発明は、叙上の点に鑑み、固定接触子自体の
構成に改変を加えることにより、接点消耗を低減
させるとともに、しや断性能を改善させることを
目的としてなされたものであり、固定接触子にそ
の接点近傍において切抜き中空部を穿設し、かつ
この中空部の接点側端部に上記固定接触子と電気
的に接続された倒Ｌ字状のアークランナを設け、
このアークランナの水平辺を上記中空部上に延在
させたことを特徴とするものである。 In view of the above points, the present invention has been made for the purpose of reducing contact wear and improving the shearing performance by modifying the configuration of the fixed contact itself. A cutout hollow part is bored in the contact near the contact, and an inverted L-shaped arc runner is provided at the contact side end of the hollow part, and the arc runner is electrically connected to the fixed contact.
The arc runner is characterized in that the horizontal side thereof extends above the hollow portion.
以下、第４，５，６図に示す実施例について本
発明を説明すると、実施例の電磁接触器は固定接
触子８の形状を除けば従来の電磁接触器と同様で
あるので、第４図には固定接触子８のみの形状を
示している。図示のように固定接触子８の接点接
合部近傍に切抜き中空部８Ｄを設けるとともに、
この中空部８Ｄの接点寄り端部に倒Ｌ字状のアー
クランナ８Ｂを切り起こして設けている。このた
め、固定接触子８を流れる電流Ｉは中空部８Ｄの
両側にI1AとI1Bに分れて流れ、アーク１２に流入
する。これら電流に基づきアークに作用する力が
第４図ｂに矢印で示されている。これには固定接
触子８を流れる電流I1AとI1Bによる力がそれぞれ
F1AとF1Bとして図示方向に作用するように示され
ており、F1AとF1Bの合力がF1で示されている。ま
た、一方可動接触子６を流れる電流による力は
F2で示されている。ここで、図において、F2≒
2F1A≒2F1Bであるから、F2＞F1となる。したが
つて、アーク１２は固定接触子のアークランナ８
Ｂの方向に駆動され、固定接点８Ａ上のアーク１
２の足は第５図のようにアークランナ８Ｂ上に転
移する。アークランナ８Ｂに一旦転移すると、ア
ーク１２はアークランナ８Ｂを流れる電流によつ
て一層駆動されて高速度でアークランナ８Ｂ上を
走行するのでアーク１２は更に伸延されて消弧さ
れることになる。このように上述の電磁接触器に
よれば、アーク１２が引き伸ばされつつアークラ
ンナ８Ｂの上を高速走行し、電流零点を迎えるた
め、アーク１２の陽光柱の荷電粒子の拡散が速や
かに行われ、かつアーク１２の足の部分の冷却効
果が大きくなり、これにより優れたしや断性能を
保持させることができる。またアーク１２の足が
固定接点８Ａからアークランナ８Ｂ上に転移する
ので、固定接点８Ａの消耗が著しく低減され得
る。なお、固定接触子８の形状は、第６図のよう
な端子側形状であつても、第４図の場合と同様な
効果が得られるのは言うまでもない。 Below, the present invention will be explained with reference to the embodiments shown in FIGS. 2 shows the shape of only the fixed contact 8. As shown in the figure, a cutout hollow part 8D is provided near the contact joint part of the fixed contact 8, and
An inverted L-shaped arc runner 8B is cut and raised at the end of the hollow portion 8D near the contact point. Therefore, the current I flowing through the fixed contact 8 is divided into I 1A and I 1B on both sides of the hollow portion 8D, and flows into the arc 12. The forces acting on the arc due to these currents are indicated by arrows in FIG. 4b. This is due to the forces caused by the currents I 1A and I 1B flowing through the fixed contact 8, respectively.
F 1A and F 1B are shown acting in the directions shown, and the resultant force of F 1A and F 1B is shown as F 1 . On the other hand, the force due to the current flowing through the movable contact 6 is
Indicated by F2 . Here, in the figure, F 2 ≒
Since 2F 1A ≒ 2F 1B , F 2 > F 1 . Therefore, the arc 12 is connected to the fixed contact arc runner 8.
Arc 1 on fixed contact 8A is driven in direction B.
The second leg is transferred onto the arc runner 8B as shown in FIG. Once transferred to the arc runner 8B, the arc 12 is further driven by the current flowing through the arc runner 8B and runs on the arc runner 8B at a high speed, so that the arc 12 is further elongated and extinguished. According to the above-mentioned electromagnetic contactor, the arc 12 is stretched and runs at high speed on the arc runner 8B and reaches the current zero point, so that the charged particles in the positive column of the arc 12 are quickly diffused, and The cooling effect of the leg portion of the arc 12 is increased, and thereby excellent shrivel cutting performance can be maintained. Furthermore, since the legs of the arc 12 are transferred from the fixed contact 8A onto the arc runner 8B, wear and tear on the fixed contact 8A can be significantly reduced. It goes without saying that even if the fixed contact 8 has a terminal side shape as shown in FIG. 6, the same effect as in FIG. 4 can be obtained.
また、上記実施例では、接点をマグネツトによ
り開閉する開閉器、すなわち電磁接触器に本発明
を適用した場合の例についてのみ述べているが、
例えば配線用しや断器のような開閉器にも本発明
を適用できるのは明白である。 Further, in the above embodiment, only an example in which the present invention is applied to a switch that opens and closes contacts using a magnet, that is, an electromagnetic contactor, is described.
It is obvious that the present invention can also be applied to switches such as wiring switches and disconnectors.
以上述べたように、本発明によれば、固定接触
子の固定接点接合部近傍に切抜き中空部を設ける
とともに、この中空部の接点寄り端部に固定接触
子と電気的につながる倒Ｌ字状のアークランナを
設け、このアークランナの水平辺を中空部上に延
在させるようにすることにより、固定接点の消耗
低減としや断性能の著しい改善とを達成し得る効
果がある。 As described above, according to the present invention, a cutout hollow part is provided in the vicinity of the fixed contact joint of the fixed contact, and the end of the hollow part near the contact has an inverted L-shape electrically connected to the fixed contact. By providing an arc runner with the horizontal side of the arc runner extending above the hollow portion, it is possible to reduce wear on the fixed contacts and significantly improve the shear cutting performance.
第１図は従来の電磁接触器の部分断面図、第２
図は第１図のものの固定接触子を示す拡大図、第
３図は従来の電磁接触器における固定接触子のア
ーク動作を説明するための説明図、第４図および
第５図は本発明の一実施例に係る固定接触子の各
動作説明図、第６図は本発明の他の実施例を示す
側面図である。
６：可動接触子、６Ａ：可動接点、８：固定接
触子、８Ａ：固定接点、８Ｂ：アークランナ、８
Ｃ：固定接触子８の端子部、８Ｄ：切抜き中空
部、なお、図中、同一符号は同一または相当部分
を示す。
Figure 1 is a partial sectional view of a conventional magnetic contactor, Figure 2 is a partial cross-sectional view of a conventional magnetic contactor.
The figure is an enlarged view of the fixed contact shown in Fig. 1, Fig. 3 is an explanatory view for explaining the arcing operation of the fixed contact in a conventional electromagnetic contactor, and Figs. 4 and 5 are the ones according to the present invention. FIG. 6 is a side view showing another embodiment of the present invention. 6: Movable contact, 6A: Movable contact, 8: Fixed contact, 8A: Fixed contact, 8B: Arc runner, 8
C: Terminal portion of fixed contactor 8; 8D: Cutout hollow portion. In the drawings, the same reference numerals indicate the same or equivalent parts.
Claims (1)
定接点に対向配置され上記固定接触子と反対方向
に延びる可動接触子に接合された可動接点とを備
え、上記固定接触子にはその接点接合部近傍に切
抜き中空部を穿設し、かつこの中空部の接点側端
部に上記固定接触子と電気的に接続された倒Ｌ字
状のアークランナを設け、このアークランナの水
平辺を上記中空部上に延在させたことを特徴とす
る開閉器。1. A fixed contact joined to a fixed contact, and a movable contact arranged opposite to the fixed contact and joined to a movable contact extending in the opposite direction to the fixed contact, and the fixed contact has a contact joint. A cutout hollow part is bored near the part, and an inverted L-shaped arc runner electrically connected to the fixed contact is provided at the contact side end of this hollow part, and the horizontal side of this arc runner is connected to the hollow part. A switch characterized by extending upward.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57197059A JPS5987713A (en) | 1982-11-10 | 1982-11-10 | Switch |
| US06/629,536 US4612427A (en) | 1982-11-10 | 1983-11-04 | Switch |
| DE8383903417T DE3382698T2 (en) | 1982-11-10 | 1983-11-04 | COUNTER. |
| KR2019830009394U KR880001426Y1 (en) | 1982-11-10 | 1983-11-04 | Switch |
| PCT/JP1983/000396 WO1984002032A1 (en) | 1982-11-10 | 1983-11-04 | Switch |
| EP83903417A EP0124620B1 (en) | 1982-11-10 | 1983-11-04 | Switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57197059A JPS5987713A (en) | 1982-11-10 | 1982-11-10 | Switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5987713A JPS5987713A (en) | 1984-05-21 |
| JPH026170B2 true JPH026170B2 (en) | 1990-02-07 |
Family
ID=16368025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57197059A Granted JPS5987713A (en) | 1982-11-10 | 1982-11-10 | Switch |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5987713A (en) |
| KR (1) | KR880001426Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5990327A (en) * | 1982-11-15 | 1984-05-24 | 三菱電機株式会社 | Power switch |
-
1982
- 1982-11-10 JP JP57197059A patent/JPS5987713A/en active Granted
-
1983
- 1983-11-04 KR KR2019830009394U patent/KR880001426Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR880001426Y1 (en) | 1988-04-15 |
| KR840006423U (en) | 1984-12-03 |
| JPS5987713A (en) | 1984-05-21 |
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