JPH017943Y2 - - Google Patents
Info
- Publication number
- JPH017943Y2 JPH017943Y2 JP1982164406U JP16440682U JPH017943Y2 JP H017943 Y2 JPH017943 Y2 JP H017943Y2 JP 1982164406 U JP1982164406 U JP 1982164406U JP 16440682 U JP16440682 U JP 16440682U JP H017943 Y2 JPH017943 Y2 JP H017943Y2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- arc
- resistant material
- resistance value
- switch
- 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
- 239000000463 material Substances 0.000 claims description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- AHADSRNLHOHMQK-UHFFFAOYSA-N methylidenecopper Chemical compound [Cu].[C] AHADSRNLHOHMQK-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Landscapes
- Contacts (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【考案の詳細な説明】
[産業上の利用分野]
本考案は、先端に耐アーク材を有する接触子を
そなえた開閉器における接触子の改良に関するも
のである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a contact in a switch equipped with a contact having an arc-resistant material at its tip.
[従来の技術]
従来の開閉装置における接触子構造を第1図に
示しており、この種の開閉器は、図示されていな
い外部操作機構によつて軸方向に往復駆動される
可動接触子1と、その外周部に周方向に複数個に
分割されバネ2あるいは自己の弾性によつて前記
可動接触子1に圧接する固定接触子3とから構成
されており、可動接触子1および固定接触子3は
それぞれ通電材からなる本体1a.3aの先端に耐
アーク材4,5を取り付けている。[Prior Art] A contact structure in a conventional switchgear is shown in FIG. 1, and this type of switch has a movable contactor 1 that is reciprocated in the axial direction by an external operating mechanism (not shown). and a fixed contact 3 which is divided into a plurality of parts in the circumferential direction on its outer circumference and presses against the movable contact 1 by a spring 2 or its own elasticity, and the movable contact 1 and the fixed contact 3 has arc-resistant materials 4 and 5 attached to the tips of main bodies 1a and 3a made of current-carrying material, respectively.
また、耐アーク材の軸方向長さを変化させて接
触子本体との境界面を斜めにしたものが提案され
ている。(実開昭56−105219)
[本発明が解決しようとする課題]
このような従来の構造では、通電材からなる接
触子本体と耐アーク材との境界面において導電率
が大きく異なるため、遮断時に第1図に示すよう
に可動接触子1が耐アーク材との境界面相互が接
触する位置近くまで移動すると電流通路がAの部
分に集中し、接触子本体の通電材が熔融すること
があるうえ、可動接触子1が固定接触子3から離
れた直後において発生するアークが、前記境界面
部分の接触子本体に膠着することもあり、この部
分の損耗が大きく、開閉器の性能に多大な影響を
与えていた。 Further, it has been proposed to change the axial length of the arc-resistant material so that the interface with the contact body is oblique. (Utility Model Application No. 56-105219) [Problems to be Solved by the Present Invention] In such a conventional structure, the electrical conductivity differs greatly at the interface between the contact body made of a current-carrying material and the arc-resistant material. Sometimes, as shown in Figure 1, when the movable contact 1 moves close to the position where the boundary surfaces with the arc-resistant material come into contact with each other, the current path is concentrated in the part A, and the current-carrying material of the contact body may melt. In addition, the arc that occurs immediately after the movable contact 1 separates from the fixed contact 3 may stick to the contact body at the interface area, causing significant wear and tear on this area and greatly reducing the performance of the switch. It had a great influence.
また、境界面を傾斜させるようにしても、境界
面の抵抗変化が大きいので、低抵抗部相互が接触
している部分に電流が集中し、結局は耐アーク材
の短い部分の接触子本体に大電流が流れて損耗を
生じる欠点がある。 In addition, even if the interface is made to be inclined, the resistance change at the interface is large, so the current will concentrate in the area where the low resistance parts are in contact with each other, and will eventually reach the contact body in the short part of the arc-resistant material. The drawback is that a large current flows, causing wear and tear.
本案は、上記の点にかんがみ、損耗の少ない開
閉接触子を提供することを目的とする。 In view of the above points, the present invention aims to provide a switching contact with less wear and tear.
[課題を解決するための手段]
このため、接触子本体と耐アーク材との間に、
接触子本体と接する側が接触子本体と同等の抵抗
値を有し、耐アーク材側が耐アーク材と同等の高
抵抗値になるよう次第に抵抗値が変化する中間接
触材を設けている。[Means for solving the problem] For this reason, between the contact body and the arc-resistant material,
An intermediate contact material is provided whose resistance value gradually changes so that the side in contact with the contact body has a resistance value equivalent to that of the contact body, and the arc-resistant material side has a high resistance value equivalent to that of the arc-resistant material.
[作用]
このため、接触子の抵抗値が次第に変化し、開
閉時に接触子相互の接触点が移動しても急激な抵
抗変化が生じることがなく、円滑な抵抗値変化に
より開閉時のアーク発生を防止する。[Function] For this reason, the resistance value of the contact changes gradually, and even if the contact points of the contacts move during opening/closing, there is no sudden change in resistance, and the smooth resistance value change prevents arcing during opening/closing. prevent.
[実施例]
本案の具体的実施例を示す第2図について説明
する。[Example] Fig. 2 showing a specific example of the present invention will be described.
1は可動接触子、3は周方向に分割されバネ2
により前記可動接触子1を挿入圧接する固定接触
子で、いずれも通電材たとえば銅よりなる接触子
本体1a.3aの先端にたとえば銅タンダステンあ
るいは銅カーボンで構成された耐アーク材4,5
を取り付けており、接触子本体と耐アーク材との
間に中間接触材6,7を設けている。 1 is a movable contact; 3 is a circumferentially divided spring 2;
This is a fixed contact into which the movable contact 1 is inserted and pressed, and each of the contact bodies 1a and 3a is made of a current-carrying material such as copper, and the tip of the contact body 1a, 3a is provided with arc-resistant materials 4, 5 made of copper tandusten or copper carbon.
is attached, and intermediate contact materials 6 and 7 are provided between the contact body and the arc-resistant material.
この中間接触材6,7は、接触子本体1a.3a
と接する側は接触子本体1a.3aと同等の電気抵
抗をそなえ、次第に抵抗値が変化し、耐アーク材
4,5と連結する側は、耐アーク材と同等の抵抗
値になるように構成されており、たとえば銅粉を
基材として一方側に向かつて次第にタングステン
あるいはカーボンの配合を増加して過熱加圧成形
してある。 These intermediate contact materials 6, 7 are the contact body 1a.3a
The side in contact with the contact body 1a, 3a has an electrical resistance equivalent to that of the contact body 1a, 3a, and the resistance value gradually changes, and the side connected to the arc-resistant materials 4 and 5 has a resistance value equivalent to that of the arc-resistant material. For example, copper powder is used as a base material, and the content of tungsten or carbon is gradually increased toward one side, and the material is heated and pressed.
したがつて、可動接触子1が固定接触子3から
引き抜かれると、接触子相互の接触点が中間接触
材6,7の低抵抗相互の接触部から高抵抗部に移
動して電気抵抗値が漸増し、急激な抵抗値変化が
ないため、通電電流の高抵抗部への移行が円滑に
なり、開路によるアーク発生時に接触子本体にア
ークが膠着することがない。 Therefore, when the movable contact 1 is pulled out from the fixed contact 3, the contact point between the contacts moves from the low resistance mutual contact area of the intermediate contact materials 6 and 7 to the high resistance area, and the electrical resistance value increases. Since the resistance increases gradually and there is no sudden change in resistance value, the current transfer to the high resistance part is smooth, and when an arc is generated due to an open circuit, the arc does not stick to the contact body.
[本考案の効果]
このように、本案は接触子本体と耐アーク材と
の間に次第に抵抗値が変化するように形成した中
間接触材を設けてあるので、接触子相互の接触点
における急激な抵抗値変化がなく、接触子本体と
耐アーク材の境界面におけるアークの発生を防
ぎ、接触子の損耗を少なくし、良好な遮断を行う
ことができる。[Effects of the present invention] As described above, in the present invention, since the intermediate contact material formed so that the resistance value gradually changes is provided between the contact body and the arc-resistant material, sudden changes in the contact points between the contacts There is no significant change in resistance value, preventing the generation of arcs at the interface between the contact body and the arc-resistant material, reducing wear and tear on the contact, and providing good interruption.
第1図は従来の接触子構造を示す要部の断面
図、第2図は本案の実施例を示す要部断面図であ
る。
1は可動接触子、3は固定接触子、1a,3a
は接触子本体、4,5は耐アーク接触材、6,7
は中間接触材である。
FIG. 1 is a sectional view of a main part showing a conventional contactor structure, and FIG. 2 is a sectional view of a main part showing an embodiment of the present invention. 1 is a movable contact, 3 is a fixed contact, 1a, 3a
is the contact body, 4 and 5 are arc-resistant contact materials, and 6 and 7 are
is the intermediate contact material.
Claims (1)
され前記内側接触子の外周部に圧接摺動する外
側接触子とをそなえ、それぞれ接触子本体の先
端に耐アーク材を設けた開閉器において、前記
内側接触子と外側接触子の接触子本体と耐アー
ク材との間に、それぞれ接触子本体に接する側
が接触子本体と同等の電気抵抗値を有し耐アー
ク材と接する側が耐アーク材と同等の電気抵抗
値を有するように次第に抵抗値を変化させた中
間接触材を設けたことを特徴とする開閉器の接
触子。 2 前記中間接触材が、耐アーク材側に向かつて
次第に抵抗値が増加する成形体である実用新案
登録請求の範囲第1項記載の開閉器の接触子。 3 前記中間接触材が、抵抗値の異なる薄板を順
次に積層した積層体である実用新案登録請求の
範囲第1項記載の開閉器の接触子。[Claims for Utility Model Registration] 1. A rod-shaped inner contact and an outer contact that is divided into a plurality of parts in the circumferential direction and slides into pressure contact with the outer periphery of the inner contact, each of which is attached to the tip of the contact body. In a switch provided with an arc-resistant material, between the contact body of the inner contact and the outer contact and the arc-resistant material, the side in contact with the contact body has an electrical resistance value equivalent to that of the contact body. A contact for a switch, characterized in that an intermediate contact material is provided whose resistance value is gradually changed so that the side in contact with the arc-resistant material has an electrical resistance value equivalent to that of the arc-resistant material. 2. The switch contactor according to claim 1, wherein the intermediate contact material is a molded body whose resistance value gradually increases toward the arc-resistant material side. 3. The switch contactor according to claim 1, wherein the intermediate contact material is a laminate in which thin plates having different resistance values are sequentially laminated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16440682U JPS5966820U (en) | 1982-10-27 | 1982-10-27 | switch contact |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16440682U JPS5966820U (en) | 1982-10-27 | 1982-10-27 | switch contact |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5966820U JPS5966820U (en) | 1984-05-04 |
JPH017943Y2 true JPH017943Y2 (en) | 1989-03-02 |
Family
ID=30360453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16440682U Granted JPS5966820U (en) | 1982-10-27 | 1982-10-27 | switch contact |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5966820U (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56105219U (en) * | 1980-01-16 | 1981-08-17 |
-
1982
- 1982-10-27 JP JP16440682U patent/JPS5966820U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5966820U (en) | 1984-05-04 |
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