JPH02216723A - Vacuum switch tube - Google Patents
Vacuum switch tubeInfo
- Publication number
- JPH02216723A JPH02216723A JP3867989A JP3867989A JPH02216723A JP H02216723 A JPH02216723 A JP H02216723A JP 3867989 A JP3867989 A JP 3867989A JP 3867989 A JP3867989 A JP 3867989A JP H02216723 A JPH02216723 A JP H02216723A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- movable
- fixed contact
- contact point
- fixed
- 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.)
- Pending
Links
- 238000009413 insulation Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は真空スイッチ管の電極構造に関する。[Detailed description of the invention] [Industrial application field] This invention relates to an electrode structure for a vacuum switch tube.
第４図は従来の真空スイッチ管の主回路部を断面図で示
したもので、１はガラスやセラミック等の電気的絶縁物
で形成した絶縁筒であって、その上下の開口は金属板か
らなる蓋２および３で気密に蓋され、真空容器４を形成
している。５は固定接点６を取着された固定ロンドであ
って、両者で固定電極を形成し、蓋２に固定されている
。７は可動接点８を取着された可動ロンドであって、両
者で可動電極を形成し、ベローズ９を介してＭ３に保持
されている。１０はアークシールドであって、固定接点
６と可動接点８を取り囲むように真空容器４内に配設さ
れている。Figure 4 shows a cross-sectional view of the main circuit section of a conventional vacuum switch tube. 1 is an insulating tube made of electrically insulating material such as glass or ceramic, and its upper and lower openings are made of metal plates. It is airtightly covered with lids 2 and 3, forming a vacuum container 4. Reference numeral 5 denotes a fixed iron to which a fixed contact 6 is attached, and both form a fixed electrode and are fixed to the lid 2. Reference numeral 7 denotes a movable iron to which a movable contact 8 is attached, and both form a movable electrode, which is held by M3 via a bellows 9. Reference numeral 10 denotes an arc shield, which is disposed within the vacuum vessel 4 so as to surround the fixed contact 6 and the movable contact 8.
この構成においては、固定接点６と可動接点８とが開離
すると、両者間にアークが発生し、このアークは、交流
電流の零点で、荷電粒子の拡散と吸着によって消滅し、
電流遮断となる。In this configuration, when the fixed contact 6 and the movable contact 8 are opened, an arc is generated between them, and this arc is extinguished by the diffusion and adsorption of charged particles at the zero point of the alternating current.
The current will be cut off.
固定接点６と可動接点８は当然のこととして接触抵抗を
小さくする必要があるが、両接点の溶着を防止するため
耐溶着性をめる必要があり、更に、充分な遮断性能、耐
電圧性を持たせる必要がある。The fixed contact 6 and the movable contact 8 naturally need to have low contact resistance, but they also need to have good welding resistance to prevent welding of both contacts, and also have sufficient breaking performance and voltage resistance. It is necessary to have
しかしながら、このような条件を全て満足させることは
接点材料面からは難しいという問題があった。However, there is a problem in that it is difficult to satisfy all of these conditions from the viewpoint of contact materials.
この発明は上記課題を解消するためになされたもので、
構造上から前記接点条件の全てを満足させ得ることが容
易な電極構造を持つ真空スイッチ管を提供することを目
的とする。This invention was made to solve the above problems,
It is an object of the present invention to provide a vacuum switch tube having an electrode structure that can easily satisfy all of the above-mentioned contact conditions from a structural standpoint.
この発明は上記目的を達成するため、固定電極の固定接
点と同電位を与えられ、上記固定接点に対して可動電極
側に位置する第１の補助固定接点と、この第１の補助固
定接点に離間対向して設けれ、最大開極位置における可
動接点に対して固定電極側に位置し、可動接点と同電位
を与えられる第２の補助固定接点を設け、所要接点条件
の一部を上記第１と第２の補助固定接点に分担させたも
のである。In order to achieve the above object, the present invention provides a first auxiliary fixed contact that is given the same potential as the fixed contact of the fixed electrode and is located on the movable electrode side with respect to the fixed contact; A second auxiliary fixed contact is provided to face the movable contact at the maximum open position, is located on the fixed electrode side with respect to the movable contact, and is given the same potential as the movable contact. This is divided into the first and second auxiliary fixed contacts.
この発明では、互いに離間対向し、接点溶着の心配がな
い第１と第２の補助固定接点に、耐電圧性と遮断性を持
たせれば、固定接点と可動接点は耐溶着性の高い接点材
料で形成すればよく、機能分担させたので、前記した接
点条件の全てを満足させることが容易となる。In this invention, if the first and second auxiliary fixed contacts, which are separated from each other and face each other and have no risk of contact welding, have voltage resistance and breaking properties, the fixed contact and the movable contact can be made of a contact material with high welding resistance. Since the functions are shared, it becomes easy to satisfy all of the above-mentioned contact conditions.
以下、この発明の１実施例を図面を参照して説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図において、１１は固定ロッド５に取着された固定
接点、１２は可動ロッド７に取着された可動接点、工３
は第１の補助固定接点である。この第１の補助固定接点
１３は環状をなし、固定接点１１に取着されて可動電極
側へ垂下している。In FIG. 1, 11 is a fixed contact attached to the fixed rod 5, 12 is a movable contact attached to the movable rod 7, and
is the first auxiliary fixed contact. This first auxiliary fixed contact 13 has an annular shape, is attached to the fixed contact 11, and hangs down toward the movable electrode.
１４は第２の補助固定接点であって、第１の補助固定接
点１３と同一内外径を有する環体をなし、蓋３の内面に
立設されて可動電極とベローズ９を取り巻くようにして
固定電極側へ延びる導電性筒１５の上端面に取着されて
おり、第１の補助固定接点１３と所定間隔Ｅを隔ててい
る。この第２の補助固定接点１４は図示の最大開極位置
にある可動接点１２より固定接点１１側に位置している
。Reference numeral 14 denotes a second auxiliary fixed contact, which has the shape of a ring having the same inner and outer diameters as the first auxiliary fixed contact 13, is erected on the inner surface of the lid 3, and is fixed so as to surround the movable electrode and the bellows 9. It is attached to the upper end surface of the conductive tube 15 extending toward the electrode side, and is separated from the first auxiliary fixed contact 13 by a predetermined distance E. This second auxiliary fixed contact 14 is located closer to the fixed contact 11 than the movable contact 12 which is at the maximum opening position shown in the figure.
また、蓋３はリード線１６で可動ロッド７に接続されて
おり、第２の補助固定接点１４は可動接点１２と同電位
にある。Further, the lid 3 is connected to the movable rod 7 by a lead wire 16, and the second auxiliary fixed contact 14 is at the same potential as the movable contact 12.
固定接点１１と可動接点１２とは接触抵抗が低く、かつ
耐溶着性の高い接点材料で形成され、第１の補助固定接
点１３と第２の補助固定接点１４とは遮断性能が高く、
かつ耐電圧性の高い接点材料で形成されている。The fixed contact 11 and the movable contact 12 are formed of a contact material with low contact resistance and high welding resistance, and the first auxiliary fixed contact 13 and the second auxiliary fixed contact 14 have high breaking performance.
In addition, it is made of a contact material with high voltage resistance.
この構成において、可動電極がスイッチ閉の状態から図
において下向きに駆動されて、可動接点１２が固定接点
１１から離間すると、両接点１２と１１間に、図に１７
Ａで示すアークが発生する。可動接点１２が図示の位置
まで移動して、可動接点１２と固定接点１１との開極距
離りが大きくなって、可動接点１２が図示の位置まで降
下すると、Ｌ＞／となるので、第１の補助固定接点１３
と第２の補助固定接点１４間が絶縁破壊して、短いアー
ク１７Ｂが発生し、長いアーク１７Ａは消滅する。この
短いアーク１７Ｂは従来と同様に交流の電流零点で荷電
粒子の拡散と吸着により消滅し、電流が遮断される。In this configuration, when the movable electrode is driven downward in the figure from the switch-closed state and the movable contact 12 is separated from the fixed contact 11, a 17
An arc indicated by A occurs. When the movable contact 12 moves to the illustrated position, the opening distance between the movable contact 12 and the fixed contact 11 increases, and the movable contact 12 descends to the illustrated position, L>/, so the first Auxiliary fixed contact 13
Dielectric breakdown occurs between the contact point and the second auxiliary fixed contact 14, a short arc 17B is generated, and a long arc 17A is extinguished. As in the conventional case, this short arc 17B is extinguished at the current zero point of the alternating current due to the diffusion and adsorption of charged particles, and the current is interrupted.
このように、本実施例では、第１の補助固定接点１３と
第２の補助固定接点１４を附設して、所要の接点条件の
−・部を両接点に分担させるようにしたので、固定接点
１１と可動接点１２に対して接点条件の全てを要求する
必要がな（、接点条件を満足させることが容易となる。In this way, in this embodiment, the first auxiliary fixed contact 13 and the second auxiliary fixed contact 14 are attached so that the - part of the required contact condition is shared between both contacts. 11 and the movable contact 12 (this makes it easier to satisfy the contact conditions).
第２図はこの発明の他の実施例を示したもので、第１の
補助固定接点１３を導電体１８を介して固定ロッド５に
支持させた点において第１図の実施例と相違する。FIG. 2 shows another embodiment of the present invention, which differs from the embodiment shown in FIG. 1 in that the first auxiliary fixed contact 13 is supported by the fixed rod 5 via a conductor 18.
第３図はこの発明の更に他の実施例を示したもので、第
１の補助固定接点１３を、蓋２の内面に一端固定した導
電性の筒１９の他端に設けた点において上記第１図、第
２図の実施例と相違する。FIG. 3 shows still another embodiment of the present invention, in which the first auxiliary fixed contact 13 is provided at the other end of a conductive tube 19 whose one end is fixed to the inner surface of the lid 2. This is different from the embodiments shown in FIGS. 1 and 2.
〔発明の効果〕
この発明は以上説明した通り、固定接点と可動接点の各
々に対して補助固定接点を配し、接離しない補助固定接
点と、互いに接離する固定・可動電極とに、所要の接点
条件をそれぞれ分担させるようにしたので、材料面から
は全てを満足させることが困難であった接点条件を容易
に満足させることが可能となり、真空スイッチ管の性能
を一段と向上することができる。[Effects of the Invention] As explained above, the present invention provides an auxiliary fixed contact for each of the fixed contact and the movable contact, and the auxiliary fixed contact that does not come into contact with or separates from it, and the fixed and movable electrodes that make contact with and separate from each other as required. Since the contact conditions are divided among the two, it is now possible to easily satisfy the contact conditions that were difficult to satisfy from a material standpoint, and the performance of the vacuum switch tube can be further improved. .
第１図〜第３図はそれぞれこの発明の実施例を示す断面
図、第４図は従来の真空スイッチ管の断面図である。
図において、２．３・−蓋、４・−真空容器、１１・−
・・固定接点、１：Ｌ−可動接点、１３・−第１の補助
固定電極、１４−第２の補助固定電極、１５−導電性筒
、１６−・・リード線、１８・−・導電体。
なお、図中、同一符号は同一または相当部分を示す。
第２1 to 3 are cross-sectional views showing embodiments of the present invention, and FIG. 4 is a cross-sectional view of a conventional vacuum switch tube. In the figure, 2.3.-lid, 4.-vacuum container, 11.-
... Fixed contact, 1: L - Movable contact, 13 - First auxiliary fixed electrode, 14 - Second auxiliary fixed electrode, 15 - Conductive cylinder, 16 - Lead wire, 18 - Conductor . In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Second
Claims (1)
電位を与えられ、上記固定接点に対して可動電極側に位
置する第１の補助固定接点と、この第１の補助固定接点
に離間対向して設けれ、最大開極位置における上記可動
接点に対して固定電極側に位置し該可動接点と同電位を
与えられる第２の補助固定接点を有し、所要接点条件の
一部を上記第１と第２の補助固定接点に分担させたこと
を特徴とする真空スイッチ管。The movable contact of the movable electrode is given the same potential as the fixed contact of the fixed electrode to be brought into contact and separated, and the first auxiliary fixed contact is located on the movable electrode side with respect to the fixed contact, and the first auxiliary fixed contact is separated. A second auxiliary fixed contact is provided facing the movable contact and is located on the fixed electrode side with respect to the movable contact at the maximum open position, and is provided with the same potential as the movable contact. A vacuum switch tube characterized in that a first and a second auxiliary fixed contact are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3867989A JPH02216723A (en) | 1989-02-17 | 1989-02-17 | Vacuum switch tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3867989A JPH02216723A (en) | 1989-02-17 | 1989-02-17 | Vacuum switch tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02216723A true JPH02216723A (en) | 1990-08-29 |
Family
ID=12531966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3867989A Pending JPH02216723A (en) | 1989-02-17 | 1989-02-17 | Vacuum switch tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02216723A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311046A (en) * | 2013-06-09 | 2013-09-18 | 中国西电电气股份有限公司 | Isolation/grounding vacuum arc extinguishing tube |
| CN103367024A (en) * | 2013-06-17 | 2013-10-23 | 北海银河产业投资股份有限公司 | Double contact of vacuum arc extinguishing chamber |
-
1989
- 1989-02-17 JP JP3867989A patent/JPH02216723A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103311046A (en) * | 2013-06-09 | 2013-09-18 | 中国西电电气股份有限公司 | Isolation/grounding vacuum arc extinguishing tube |
| CN103367024A (en) * | 2013-06-17 | 2013-10-23 | 北海银河产业投资股份有限公司 | Double contact of vacuum arc extinguishing chamber |
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