JPS6348033Y2

JPS6348033Y2 -

Info

Publication number: JPS6348033Y2
Application number: JP1979066330U
Authority: JP
Priority date: 1979-05-18
Filing date: 1979-05-18
Publication date: 1988-12-12
Also published as: JPS55173839U

Description

【考案の詳細な説明】産業上の利用分野本考案は、開閉器の開閉時に発生するアークを
消滅する消弧室に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to an arc extinguishing chamber that extinguishes the arc generated when a switch is opened and closed.

従来技術従来公知の開閉器の消弧装置の例として実公昭
36−18347号があるが、この消弧装置は開閉接触
部に強磁板を設け、その側方にグリツドを設ける
もので、この構造ではアークが直接外部に放出さ
れることになり、又他の消弧室の例として実公昭
43−30979号があるが、この消弧装置は開閉接触
部に設けたコ字形の強磁板の側方のアーク放出口
に冷却用金網を設けたもので、この構造ではアー
クが強磁板と金網の空間を介して金網全面でアー
クが外部に放出されることになる。前記の従来例
の消弧装置では、グリツド、金網でアークが弱め
るが、アークが直接外部に放出される危険性があ
り外部端子で短絡事故を起こす欠点があつた。Prior Art As an example of a conventionally known arc extinguishing device for a switch,
No. 36-18347, this arc extinguishing device has a strong magnetic plate on the opening and closing contact part and a grid on the side of it, and with this structure the arc is directly discharged to the outside.
In the above-mentioned conventional arc extinguishing device, the arc is weakened by the grid and wire mesh, but there is a risk of the arc being directly discharged to the outside and there is a short circuit at the external terminal.

考案が解決しようとする課題上記の如く開閉器の開閉時に発生するアークを
消滅させるためにアークを誘導、冷却する強磁板
グリツドを設けた構造の消弧室が一般的に実施さ
れているが、アークが開閉接触部内にこもるとア
ーク熱、アーク圧力の影響で開閉性能を低下さ
せ、アークを直接外部に放出させると外部端子で
短絡事故を起こす等の問題があつた。Problems to be Solved by the Invention As mentioned above, in order to extinguish the arc generated when the switch opens and closes, arc extinguishing chambers are generally implemented which are equipped with a ferromagnetic plate grid that guides and cools the arc. If the arc is trapped inside the switching contact part, the switching performance will deteriorate due to the effects of arc heat and arc pressure, and if the arc is released directly to the outside, there will be problems such as short circuit accidents at external terminals.

考案が解決しようとする手段本考案は開閉器の電磁遮断時に発生するアーク
をアーク発生部周辺に設けた強磁板で磁気誘導
し、アーク発生部と磁性板間の途中に設けたグリ
ツドでアークを分散し、圧力の弱まつたアークガ
スを強磁板に設けた孔より外部に放出し消弧する
構造のもので、強磁板とグリツドでできる空間を
利用してアークを消滅させるようにしてアークガ
スが直接外部に出る量を少なくし、又端子部にも
アークが被ることなく消弧出来るよう改良したも
のである。The invention aims to solve the problem by magnetically inducing the arc generated when the switch is electromagnetically cut off using a ferromagnetic plate installed around the arc generating area, and then using a grid installed midway between the arc generating area and the magnetic plate to create an arc. This structure disperses the arc gas, whose pressure has weakened, and extinguishes the arc by releasing it to the outside through holes provided in the ferromagnetic plate.The space created by the ferromagnetic plate and the grid is used to extinguish the arc. This has been improved to reduce the amount of arc gas that directly escapes to the outside, and to extinguish the arc without covering the terminals.

実施例以下図面とともに説明すると、１は絶縁物製の
基台、２は基台１に固定し一端に固定接点３を、
他端に端子２′を有する固定接触子、４は固定接
点３に対向して可動接点５を有する可動接触子、
６は絶縁物製の可動体で窓７に圧縮バネ８及び板
バネ９と共に可動接触子４を設置している。１０
は可動鉄心で可動体６にピン１０′により吊下固
定している。Embodiments Explained below with reference to the drawings, 1 is a base made of an insulating material, 2 is fixed to the base 1, and a fixed contact 3 is attached to one end,
A fixed contact having a terminal 2' at the other end; 4 a movable contact having a movable contact 5 facing the fixed contact 3;
6 is a movable body made of an insulating material, and a movable contactor 4 is installed in a window 7 together with a compression spring 8 and a plate spring 9. 10
is a movable iron core that is suspended and fixed to the movable body 6 by pins 10'.

１１は絶縁物製の蓋体で各相を分割する隔壁１
２、上部を覆う天井部１３及び端子２′と開閉部
分を分割する側壁１４が１体に形成している。側
壁１４には孔１５が、天井部１３には孔１６が
各々形成され、孔１５，１６は連通している。 11 is a partition wall 1 that divides each phase with a lid made of an insulating material.
2. The ceiling part 13 covering the upper part and the side wall 14 dividing the terminal 2' and the opening/closing part are formed into one body. A hole 15 is formed in the side wall 14, and a hole 16 is formed in the ceiling portion 13, and the holes 15 and 16 communicate with each other.

１７は磁性金属板よりなる強磁板で上部１８の
両側を下方に折曲した側片１９，１９及び端子側
を下方に折曲し、上部にアークガスを放出する複
数個の孔２１を設けた当接片２０を有する。Reference numeral 17 is a ferromagnetic plate made of a magnetic metal plate, with side pieces 19, 19 bent downward on both sides of the upper part 18, and a terminal side bent downward, and a plurality of holes 21 for discharging arc gas are provided in the upper part. It has a contact piece 20.

２２は磁性金属板よりなるグリツドで電路開閉
部方向にほぼコ字状に折曲し、且つコ字状部の底
面に複数個の孔２４を設けた誘導片２３，２３を
有し、更に上部の誘導片２３は折曲により形成し
ている為上部にもアークガスの抜ける孔２５を形
成している。第７図に示す事如く強磁板１７の当
接片２０部分は鈍角に折曲形成し蓋体１１下方か
ら上部１８を上にし側壁１４に当折片２０を弾性
的に当接させながら押し込み側片１９端部が溝２
６に、且つ当接片２０の下端は突部２７を乗り越
えて挿着し、該突部２７で強磁板１７の脱落を防
止している。一方グリツド２２は上下の長手方向
が弓状に湾曲し隔壁１２に形成した溝２８に下方
から湾曲部のバネ性を利用して圧入保持させる。Reference numeral 22 denotes a grid made of a magnetic metal plate, which is bent into a substantially U-shape in the direction of the circuit opening/closing section, and has guiding pieces 23, 23 with a plurality of holes 24 provided on the bottom of the U-shaped portion, and further has guide pieces 23, 23 provided with a plurality of holes 24 on the bottom of the U-shaped portion. Since the guide piece 23 is formed by bending, a hole 25 through which the arc gas escapes is also formed in the upper part. As shown in FIG. 7, the abutment piece 20 of the ferromagnetic plate 17 is bent at an obtuse angle and pushed into the side wall 14 from below with the upper part 18 facing upward while the abutment piece 20 is in elastic contact with the side wall 14. The end of side piece 19 is groove 2
6, and the lower end of the contact piece 20 is inserted over the protrusion 27, and the protrusion 27 prevents the ferromagnetic plate 17 from falling off. On the other hand, the grid 22 is curved in an arcuate manner in the upper and lower longitudinal directions, and is press-fitted and held from below into a groove 28 formed in the partition wall 12 by utilizing the springiness of the curved portion.

本考案では固定接触子２に設けた固定接点３と
可動接触子４に設けた可動接点５との略水平位置
に一定間隔をあけて誘導片２３，２３を、該誘導
片２３，２３間と誘導片２３の上部にアークガス
の抜ける孔２４，２５を形成したグリツト２２を
開閉接触部と当接片２０の間に設置し、開閉接触
部の両側に側片１９を、上部に上部１８及び端子
側に当接片２０を形成した強磁板１７を設置し、
当接片２０のアークガス放出孔２１を側壁１４の
アークガス放出孔１５に位置させ、当接片２０と
グリツド２２との間にできる空間３０の上部に孔
１５，２１を位置させた構造としてあるので遮断
時に発生するアークを強磁板１７でグリツド２２
側に誘導しグリツドの誘導片２３で分割し、誘導
片２３上の孔２５及び誘導片２３間の孔２４、更
に下側誘導片２３と固定接触子２間から空間３０
に放出されほぼ消滅するが、アークの一部は空間
３０の上部に位置した当接片２０の孔２１と蓋体
１１の孔１５より外気中に放出し消滅する。 In the present invention, the guide pieces 23, 23 are placed at a constant interval in a substantially horizontal position between the fixed contact 3 provided on the fixed contact 2 and the movable contact 5 provided on the movable contact 4. A grit 22 having holes 24 and 25 through which arc gas escapes is formed in the upper part of the guide piece 23 is installed between the opening/closing contact part and the abutment piece 20, side pieces 19 are placed on both sides of the opening/closing contact part, and the upper part 18 and the terminal are placed above the opening/closing contact part. A ferromagnetic plate 17 with a contact piece 20 formed on the side is installed,
The structure is such that the arc gas discharge hole 21 of the contact piece 20 is located at the arc gas discharge hole 15 of the side wall 14, and the holes 15 and 21 are located above the space 30 formed between the contact piece 20 and the grid 22. A ferromagnetic plate 17 is used to prevent the arc generated during interruption from the grid 22.
It is guided to the side and divided by the guide piece 23 of the grid, and the hole 25 on the guide piece 23 and the hole 24 between the guide pieces 23, and further the space 30 between the lower guide piece 23 and the fixed contact 2.
However, a part of the arc is released into the outside air through the hole 21 of the contact piece 20 and the hole 15 of the lid 11 located at the upper part of the space 30 and disappears.

考案の効果本考案は、アークがグリツド２２の誘導片２
３，２３に誘導されて当接片２０とグリツド２２
でできる空間３０に導かれてほぼ消滅し、消滅し
きれなかつたアークが空間３０の上部の孔１５，
２１より外部に放出するので、開閉接触部内にア
ークが充満することなく、外部に放出されるアー
クが少なくなり、開閉性能を低下させることなく
遮断性能を十分確保できると共に、外部端子の短
絡事故を防止できるという実用的効果があつた。
なお同一要素には同一符号で示してある。Effects of the invention In this invention, the arc is connected to the guide piece 2 of the grid 22 .
3, 23, the contact piece 20 and the grid 22
The arc that was not completely extinguished is guided to the space 30 formed by the hole 15 in the upper part of the space 30.
21 to the outside, the arc does not fill the switching contact area and the amount of arc released to the outside is reduced, ensuring sufficient interrupting performance without deteriorating switching performance and preventing short-circuit accidents of external terminals. This has the practical effect of preventing this.
Note that the same elements are indicated by the same reference numerals.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本考案に係る開閉器の消弧室の１実施例を
示すもので、第１図は開閉器の消弧室部分を示す
縦断正面図、第２図は第１図のＡ−Ａより見た横
断面図、第３図は強磁板の正面図、第４図は第３
図の右側面図、第５図はグリツドの正面図、第６
図は第５図の左側面図、第７図は強磁板、グリツ
ド及び蓋体の分解斜視図である。１は基台、３は固定接点、５は可動接点、１１
は蓋体、１２は隔壁、１３は天井部、１４は側
壁、１５は孔、１７は強磁板、１８は上部、１９
は側片、２０は当接片、２１は孔、２２はグリツ
ド、２３は誘導片、２４，２５は孔、２６は溝、
２８は溝、３０は空間である。 The figures show one embodiment of the arc extinguishing chamber of the switch according to the present invention. Figure 1 is a longitudinal sectional front view showing the arc extinguishing chamber part of the switch, and Figure 2 is taken from A-A in Figure 1. Figure 3 is a front view of the ferromagnetic plate, Figure 4 is a cross-sectional view of the ferromagnetic plate.
Figure 5 is the right side view of the grid, Figure 5 is the front view of the grid, and Figure 6 is the front view of the grid.
The figure is a left side view of FIG. 5, and FIG. 7 is an exploded perspective view of the ferromagnetic plate, grid, and lid. 1 is a base, 3 is a fixed contact, 5 is a movable contact, 11
12 is a lid, 12 is a partition, 13 is a ceiling, 14 is a side wall, 15 is a hole, 17 is a ferromagnetic plate, 18 is an upper part, 19
is a side piece, 20 is a contact piece, 21 is a hole, 22 is a grid, 23 is a guide piece, 24 and 25 are holes, 26 is a groove,
28 is a groove, and 30 is a space.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

固定接点３及び可動接点５より成る開閉部を囲
むように、隔壁１２、天井部１３及び側壁１４で
開閉室を形成した蓋体１１を基板１に固定し、上
部１８の両側を下方に折曲した側片１９，１９及
び端子２′側を下方に折曲し、上部に複数の孔２
１を設けた当接片２０を有し、前記蓋体１１の隔
壁１２，１２に設けた溝２６，２６に側片１９，
１９の上端部を挿着し、当接片２０を側壁１４に
沿つて挿入係止して強磁板１７を蓋体１１に固定
し、固定及び可動接点３，５と当接片２０の間で
ほぼコ字状に接点方向に対向した誘導片２３，２
３と、該誘導片２３の上部と誘導片２３，２３間
に各々孔２５，２４を設け、且つ上下方向に弓状
に湾曲形成したグリツト２２と、該グリツト２２
は隔壁１２，１２に設けた溝２８，２８に圧入固
着し、且つ蓋体１１の孔１５と強磁板１７の孔２
１とは相対するように設け、前記当接片２０とグ
リツト２２との間にできる空間３０の上部に孔１
５，２１を位置させた開閉器の消弧室。 A lid body 11, which forms an opening/closing chamber with a partition wall 12, a ceiling part 13, and a side wall 14, is fixed to the substrate 1 so as to surround the opening/closing part consisting of the fixed contact 3 and the movable contact 5, and both sides of the upper part 18 are bent downward. Bend the side pieces 19, 19 and the terminal 2' side downward, and make a plurality of holes 2 at the top.
1, and a side piece 19 in the grooves 26, 26 provided in the partition walls 12, 12 of the lid body 11.
19 is inserted, and the contact piece 20 is inserted and locked along the side wall 14 to fix the ferromagnetic plate 17 to the lid 11, and between the fixed and movable contacts 3, 5 and the contact piece 20. The guide pieces 23, 2 face each other in the direction of the contact in a substantially U-shape.
3, a grit 22 provided with holes 25, 24 between the upper part of the guide piece 23 and the guide pieces 23, 23, respectively, and curved in an arch shape in the vertical direction;
are press-fitted into the grooves 28, 28 provided in the partition walls 12, 12, and are fixed in the holes 15 of the lid 11 and the holes 2 of the ferromagnetic plate 17 .
1, and a hole 1 is provided in the upper part of the space 30 formed between the contact piece 20 and the grit 22 .
The arc extinguishing chamber of the switch where 5 and 21 are located.