JP3711698B2 - Sealed contact device - Google Patents

Sealed contact device Download PDF

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Publication number
JP3711698B2
JP3711698B2 JP13507297A JP13507297A JP3711698B2 JP 3711698 B2 JP3711698 B2 JP 3711698B2 JP 13507297 A JP13507297 A JP 13507297A JP 13507297 A JP13507297 A JP 13507297A JP 3711698 B2 JP3711698 B2 JP 3711698B2
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JP
Japan
Prior art keywords
contact
arc
movable
insulating
iron core
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Expired - Lifetime
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JP13507297A
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Japanese (ja)
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JPH10326530A (en
Inventor
律 山本
就俊 星野
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Priority to JP13507297A priority Critical patent/JP3711698B2/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/02Bases; Casings; Covers
    • H01H50/023Details concerning sealing, e.g. sealing casing with resin
    • H01H2050/025Details concerning sealing, e.g. sealing casing with resin containing inert or dielectric gasses, e.g. SF6, for arc prevention or arc extinction

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Contacts (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、パワー負荷用のリレーや電磁開閉器等に好適な封止接点装置に関する。
【0002】
【従来の技術】
従来の技術の封止接点装置を図11乃至図13に基づいて以下に説明する。図11は封止接点装置の断面図である。図12はアーク電圧とアーク長との関係の説明図である。図13はアークが引き延ばされている様子を説明する封止接点装置の断面図である。
【0003】
従来、この種の封止接点装置として図11に示すものにあっては、絶縁材料製の封止容器1と、固定接点2aを設け封止容器1に気密接合される固定端子2と、固定接点2aに接離する可動接点3aを設けた可動接触子3と、接点が接離するよう可動する可動鉄芯8が底部10a側に収納されその可動鉄芯8に対向して位置規制する固定鉄芯7が開口部10b側に収納される有底筒部10と、固定鉄芯7を固着して有底筒部10に気密接合される金属材料製の第一の接合部材11と、水素又は水素を主体とするガスが気密封止されるよう封止容器1及び第一の接合部材11に気密接合されることによって両接点及び両鉄芯を収容するための気密空間Aを形成する金属材料製の第二の接合部材12と、可動鉄芯8に連結される可動軸4と、接点開離方向へ可動鉄芯8を付勢する復帰ばね9と、前記固定接点2aと可動接点3aとの間に発生するアーク及び前記封止容器1と第二の接合部材12との間の接合部分を絶縁する絶縁立片15b,15bを有する絶縁部材15と、アークを磁気吹き消しのために駆動するアーク駆動部14と、接点当接方向へ可動接触子3を付勢する接圧ばね6と、可動接触子3が可動軸4に連設されるよう接圧ばね6を圧縮懸架状態で保持するための保持部材5と、第一の接合部材11と接合し磁気回路を形成するヨーク16を有し可動鉄芯8を駆動して可動させる駆動部BBと、を備えている。
【0004】
この封止接点装置にあっては、固定接点2aから可動接点3aが引き外された場合であっても、絶縁立片15b,15bによって、気密空間A内において発生したアークが封止容器1と第二の接合部材12との間の接合部分に接触せず、よって接合部分が破損して気密封止されたガスが漏出することがないという利点があった。
【0005】
【発明が解決しようとする課題】
ところで、図12に示すように、アーク電圧は、プラス接点部で生じる陽極降下電圧V1と、マイナス接点部で生じる陰極降下電圧V2と、接点間のアークにおいて生じる陽光柱電圧V3とからなり、このうちの陽光柱電圧はアーク長に比例する。従って、アーク電圧はアークが長いほど高いものとなり、アーク電圧が封止接点装置の開極する回路の電源電圧より高いものとなったときにアークが消弧されるから、アークを長く引き延ばすことができるほど遮断性能は向上する。
【0006】
しかしながら、上述のような図11に示す封止接点装置にあっては、絶縁部材15が存在するために発生したアークを引き延ばす気密空間Aが小さいものとなっており、アークを十分に引き延ばすことができない場合がある。
【0007】
このことにより、図13に示す引き延ばされたアークAc1は消弧のための十分なアーク電圧まで上昇せずに、電流遮断不良が発生する場合があるという問題点があった。
【0008】
また、引き延ばされたアークAc2が、図13に示すように、接圧ばね6に飛び移り、アーク長が短くなるとともに、接圧ばね6が破損する恐れがあるという問題点もあった。
【0009】
本発明は、上記問題点を改善するために成されたもので、その目的とするところは、アークを十分長く引き延ばすことができ、電流遮断性能の良い封止接点装置を提供することにある。
【0010】
【課題を解決するための手段】
本発明は上記の問題を解決するために、請求項1記載の発明にあっては、絶縁材料製の封止容器と、固定接点を設け封止容器に気密接合される固定端子と、固定接点に接離する可動接点を設けた可動接触子と、接点が接離するよう可動する可動鉄芯が底部側にその可動鉄芯に対向して位置規制する固定鉄芯が開口部側にそれぞれ収納される有底筒部と、固定鉄芯を固着して有底筒部に気密接合される金属材料製の第一の接合部材と、水素又は水素を主体とするガスが気密封止されるよう封止容器及び第一の接合部材に気密接合されることによって両接点及び両鉄芯を収容するための気密空間を形成する金属材料製の第二の接合部材と、可動鉄芯に連結される可動軸と、接点開離方向へ可動鉄芯を付勢する復帰ばねと、可動接触子を接点当接方向に付勢して接圧を与える接圧ばねと、前記固定接点と可動接点との間に発生するアーク及び前記封止容器と第二の接合部材との間の接合部分を絶縁する絶縁立片を有する絶縁部材と、アークを消弧するために駆動するアーク駆動部と、可動鉄芯を駆動して可動させる駆動部と、を備えた封止接点装置において、前記アーク駆動部によって駆動され引き延ばされたアークと前記接圧ばねとを絶縁する接圧ばね絶縁立片を前記絶縁部材に設けたことを特徴とするものである。
【0011】
請求項2記載の発明にあっては、前記絶縁部材は、アークに臨む面に、通気口を有することを特徴とするものである。
【0012】
請求項3記載の発明にあっては、前記絶縁部材は、アークに臨む面に、該面からアークの側に突出する突出部を有することを特徴とするものである。
【0013】
請求項4記載の発明にあっては、前記絶縁部材は、アークに臨む面に、アークを分割する分割部材を設けたことを特徴とするものである。
【0014】
【発明の実施の形態】
本発明にかかる封止接点装置の第一実施の形態を図1乃至図3に基づいて、第二実施の形態を図4、図5に基づいて、第三実施の形態を図6に基づいて、第四実施の形態を図7乃至図10に基づいて説明する。
【0015】
〔第一実施の形態〕
図1は封止接点装置の断面図である。図2はアーク駆動部の与える磁場の説明図である。図3は絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【0016】
この封止接点装置は封止接点部AA、駆動部BB、ハウジングCCを備えて構成されている。
【0017】
まず、封止接点部AAを説明する。図1において1は封止容器で、セラミックのような耐熱性材料により一面を開口して箱状に形成され、その底部の2箇所に貫通穴1aが設けられている。2は固定端子で、例えば銅合金(Cu−Fe系、Cu−Sn系、Cu−Cr系等)等の銅系材料等により、略多段有底円筒状に形成され、底側の一端部には固定接点2aが固着され、開口部側の他端部には鍔部2cが設けられている。この固定端子2は、その他端部が封止容器1から突出した状態で、鍔部2c付近が封止容器1にロウ付け等により気密接合される。また、この固定端子2は、その開口部側から内方へ向かってねじ溝2bが形成されている。
【0018】
3は可動接触子で、例えば銅合金(Cu−Fe系、Cu−Sn系、Cu−Cr系等)等の銅系材料等により、平板状に形成され、固定接点2aとは接離する間隔を有して両端部に可動接点3aが固着されている。
【0019】
4は可動軸で、ステンレス鋼等の非磁性金属材料及び鉄代替成型材料等により、略丸棒状に形成され、可動接触子3の中央部に設けられた挿通孔3bに一端4aが挿通している。この可動軸4は、その他端4bにねじ溝4cが切られている。
【0020】
5は保持部材に相当する可動接触子ホルダーで、鉄系材料やアルミ合金で形成され、可動接触子3が可動軸4に連接されるよう後述する接圧ばね6を圧縮懸架状態で保持するものである。
【0021】
6は接圧ばねで、コイル状に形成され、可動接触子ホルダー5内に保持される。この接圧ばね6は、両接点2a,3aの当接方向へ可動接触子3を付勢する。
【0022】
7は固定鉄心で、電磁軟鉄等の磁性材料により、一端部7aが拡径されており、可動軸4を挿通する挿通孔7bが軸方向に設けられている。この固定鉄心7は、後述する第一の接合部材11の挿通孔11aに挿通して一端部7aが固着され、他端部には挿通孔7bの内径よりも大きい内径を有した凹部7cが設けられている。
【0023】
8は可動鉄心で、両接点2a,3aが接離するよう可動するものであって、電磁軟鉄等の磁性材料により略円柱状に形成され、可動軸4を挿通する挿通孔8aが軸方向に設けられている。この挿通孔8aには、可動軸4のねじ溝4cと共に可動軸4と可動鉄芯8との連結位置を可動軸4の軸方向に沿って可変とする位置調整手段20を構成するねじ溝8bが切られている。この可動鉄芯8は、その軸方向の一端側に固定鉄心7との対向面8cを有しており、その他端部にねじ溝8bの内径よりも大きい内径を有した凹部8dが設けられている。
【0024】
9は復帰ばねで、両接点2a,3aの開離方向へ可動鉄芯8を付勢するものであって、固定鉄心7の挿通孔7bの内径よりも若干大きい内径を有したコイル状に形成され、固定鉄心7の挿通孔7bに挿通された可動軸4に挿通されて、その一端部が固定鉄心7の凹部7cに嵌まり込んで位置規制される。
【0025】
10は有底筒部で、ステンレス鋼等の非磁性金属材料により、底部10aを有して形成され、その底部10a側に可動鉄心8を収納するとともに、その可動鉄心8の対向面8cに対向される固定鉄心7を開口部10b側に収納する。
【0026】
11は第一の接合部材で、電磁軟鉄等の磁性材料により、矩形状に形成され、固定鉄心7及び可動鉄心8と共に磁気回路を形成する。この第一の接合部材11は、前述したように、固定鉄心7をその一端部7aを固着する前に挿通する挿通孔11aが中央に設けられている。この第一の接合部材11は、その挿通孔11a付近が有底筒部10に気密接合される。また、第一の接合部材11は、ガスの透過流出を減少させるために銅メッキがなされている。
【0027】
12は第二の接合部材で、42アロイ等の金属材料により、両端部に開口を有して筒状に形成され、一端部側の開口の開口端部12aと封止容器1の開口端部1bとが接合するようになっている。第二の接合部材12は、他端部に第一の接合部材11に気密接合される第2の接合部12bが設けられている。そして、この第二の接合部材12は、前述した封止容器1及び第一の接合部材11に気密接合されることによって両接点2a,3a及び両鉄芯7,8を収容するための気密空間Aを形成し、この気密空間Aが水素を主体とするガスが例えば2気圧程度でもって気密封止される。ガスを封入するのは、冷却効果を向上させて、アークを消弧しやすくするためである。
【0028】
アーク駆動部14は、永久磁石14aとこれを挟む磁性部材14bからなり、磁性部材が固定接点2a及び可動接点3aを挟むようにして封止容器1の外面に付設される。従ってアーク駆動部14は、図2に示す両接点2a,3aが存在する空間に可動接点3aの動作方向と直交する方向(図2中矢線方向であって、図1中紙面奥行手前方向)の磁場を与える。
【0029】
絶縁部材15は、接点2a,3a間に発生したアークが、開口端部12aと封止容器1の開口端部1bとの接合部分S及び第一の接合部材11に触れるのを防止するものである。絶縁部材15は、アークが触れると水素を発生し遊離炭素をさほど発生させないユリアや不飽和ポリエステル等の水素供給材料で構成してある。なお、絶縁部材15は絶縁性有する材料であれば良く、例えばアルミナ入りナイロンやセラミック等でもよい。
【0030】
詳しくは、図3に示すように、絶縁部材15は、第一の接合部材11を覆う平板状の絶縁板部15aと、絶縁板部15aのアーク駆動方向両端部より接点2a,3a配設側に延設し接合部分Sを覆う絶縁立片15b,15bと、各絶縁立片15b,15bの磁場方向の両端部から互いに近づくようにアーク駆動方向に延設した絶縁側片15c,15c,15c,15cを有して構成してある。
【0031】
絶縁板部15aのアーク駆動方向両端部は絶縁立片15b,15bの延設位置よりやや外方に突出して突出片15d,15dを形成する。絶縁板部15aの略中央部分には、可動軸4を挿通するための貫通孔15eが設けてある。
【0032】
そして、貫通孔15eと絶縁立片15bとの間であって貫通孔15eの近傍に接圧ばね絶縁立片15fが設けてある。接圧ばね絶縁立片15fは、貫通孔15eに挿通される可動軸4に取り付けられる可動接触子ホルダー5の接圧ばね6にアークが触れないようにするものである。図1に示すように、絶縁板部15aと第一の接合部材11との間には、付勢手段に相当する板ばね15f,15fが配設してある。板ばね15f,15fは、絶縁部材15を第一の接合部材11から遠ざかる方向に付勢するものである。
【0033】
絶縁部材15は、封止容器1内に収納配設した状態において、まず絶縁板部15aが第一の接合部材11と接合部分Sを緊密に覆う。また、絶縁側片15c,15c,15c,15cが絶縁立片15b,15bの側部から連設されているので、アークがアーク駆動方向よりやや斜めに駆動されたとしても接合部分S近傍にアークが接触することがない。
【0034】
更に、接圧ばね絶縁立片15fが接圧ばね6を覆うので、アークが接圧ばね6に飛び移ることがない。
【0035】
次に、駆動部BBを説明する。この駆動部BBは、固定鉄芯7及び可動鉄芯8並びに第一の接合部材11と共に電磁石装置を構成するものである。13はコイルで、コイル枠13aに巻回されている。16はヨークで、ヨーク本体16a及びブッシュ16bからなり、固定鉄芯7及び可動鉄芯8並びに第一の接合部材11と共に磁気回路をなす。ヨーク本体16aは、コイル13を外囲するよう中央片及び両対向片でU字状に形成され、その中央片に貫通穴16cが設けられている。ブッシュ16bは、配設したときに固定鉄心7と重合する部分が無い程度の長さの円筒状に形成され、ヨーク本体16aの貫通穴16cに挿着される。これらのヨーク本体16a及びブッシュ16bが配設された状態では、前述した有底筒部10の筒部10aは、ヨーク16のブッシュ16bと可動鉄芯8との間に位置している。
【0036】
ハウジングCCは、封止接点部AAと駆動部BBとを共に収容するものである。
【0037】
次に、このものの動作を説明する。コイル13の励磁前は、可動接点3aは、固定接点2aとは接点ギャップを有して対向している。コイル13を励磁すると、可動鉄心8が固定鉄心7に吸引されて可動することにより、その可動鉄心8に固定された可動軸4が駆動されて、可動接点3aは、接点ギャップを徐々に小さくしてゆき、固定接点2aに当接する。
【0038】
また、コイル13の励磁が切られると、可動接触子3は、主として接圧ばね6及び復帰ばね9の付勢力でもって復帰して、可動接点3aが固定接点2aから開離するとともに、可動鉄心8も所定の距離だけ復帰して元の状態に戻る。そして、復帰時に接点間に発生するアークは、アーク駆動部14の磁場により可動接触子3の両端方向へ十分に引き伸ばされて消弧される。
【0039】
以上のようにして構成した封止接点装置にあっては、接圧ばね絶縁立片15fが接圧ばね6を覆うので、アークが接圧ばね6に飛び移ることが無く、よってアークが短くなることがないとともに、接圧ばね6の破損を防止することができる。
【0040】
〔第二実施の形態〕
図4は絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。図5は絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。なお、図4、図5においては前述の第一実施の形態で説明したところの封止接点装置と同等の箇所には同じ符号を付してあるので、同等の箇所の詳細な説明は省略する。
【0041】
図4に示す本実施の形態の封止接点装置が、前述の従来の技術で説明したところの封止接点装置と異なり特徴となるのは次の構成である。
【0042】
即ち、絶縁部材15のアークに臨む面に、通気口15g,15g,15g…を設けた構成である。
【0043】
通気口15g,15g,15g…は、絶縁立片15bと接圧ばね絶縁立片15fとの間に位置する部分の絶縁板部15aに左右6箇所ずつ穿設されており、例えば直径1.5[mm]程度の貫通孔である。該直径はアークが該貫通孔を通じて絶縁板部15aの他面側に漏出しない程度の大きさであればよい。
【0044】
該通気口15g,15g,15g…を設けることにより、アークが絶縁板部15aに触れた場合に発生する脱ガスをアークに臨まない面側に排気することができる。従って、該発生した脱ガスによってアークが絶縁板部15aから遠ざけられることがなく絶縁板部15a付近まで引き延ばされ、よってアーク長が短くなることがない。
【0045】
なお、通気口15g,15g,15g…は、絶縁板部15aに設けるものに限られるものではなく、絶縁部材15のアークに臨む面であればよいから、図5に示すように、接圧ばね絶縁立片15fに1.5[mm]程度の幅のスリットとして設けても良い。
【0046】
〔第三実施の形態〕
図6は絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。なお、図6においては前述の第一実施の形態で説明したところの封止接点装置と同等の箇所には同じ符号を付してあるので、同等の箇所の詳細な説明は省略する。
【0047】
図6に示す本実施の形態の封止接点装置が、前述の従来の技術で説明したところの封止接点装置と異なり特徴となるのは次の構成である。
【0048】
即ち、絶縁部材15のアークに臨む面に、該面からアークの側に突出する突出部15hを設けた構成である。
【0049】
突出部15hは、絶縁板部15a上であって、絶縁立片15bと接圧ばね絶縁立片15fとの略中間に位置する部分にアーク引き延ばし方向(紙面左右方向)に直交するようにして立設したものである。
【0050】
この突出部15hを設けることにより、引き延ばされたアークAc3は図6(b)に示すように突出部15hを迂回するような形状となるため、突出部15hを迂回する分だけアークを長く引き延ばすことができる。
【0051】
従って、突出部15hにより、アーク電圧を上昇させることができ、遮断性能を向上させることができる。
【0052】
なお、突出部15hは引き延ばされたアークを迂回させることができるものであればよいから、絶縁板部15に設けることにかぎられるものではなく、例えば絶縁立片15b等に設けても良い。
【0053】
〔第四実施の形態〕
図7は絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。図8はアークを分割した場合のアーク電圧の説明図である。図9は絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。図10は絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。なお、図7乃至図9においては前述の第一実施の形態で説明したところの封止接点装置と同等の箇所には同じ符号を付してあるので、同等の箇所の詳細な説明は省略する。
【0054】
図7、図9、図10に示す本実施の形態の封止接点装置が、前述の従来の技術で説明したところの封止接点装置と異なり特徴となるのは次の構成である。
【0055】
即ち、絶縁部材15のアークに臨む面に、アークを分割する分割部材15iを設けた構成である。
【0056】
分割部材15iは、金属製部材の板体であって、絶縁板部15a上面であって絶縁立片15bと接圧ばね絶縁立片15fと絶縁側片15cとで囲まれた部分の略全面を覆うようにして設けてあるものである。
【0057】
この分割部材15iを設けることにより、アークは固定接点2aと分割部材15iの間のものと、可動接点3aと分割部材15iとの間のものと、に分割される。そして、図8に示すように、アークを分割することにより、陰極降下電圧V2,V4及び陽極降下電圧V1,V3が各々2箇所で生じることとなり、同一アーク長であってもアーク電圧を上昇させることができ、遮断性能を向上させることができる。
【0058】
なお、本実施の形態では、分割部材15iを絶縁板部15aに設けているが、これに限られるものではなく、図9に示すように絶縁立片15bに設けても良く、また図10に示すように接圧ばね絶縁立片15fに設けても良い。
【0059】
【発明の効果】
本発明の封止接点装置は上述のように構成してあるから、請求項1記載の発明にあっては、接圧ばね絶縁立片がアーク駆動部によって駆動され引き延ばされたアークと前記接圧ばねとを絶縁するので、アークが接圧ばねに飛び移ることが無く、よってアークが短くなることがないとともに、接圧ばねの破損を防止することができ、電流遮断性能の良い封止接点装置を提供できるという効果を奏する。
【0060】
請求項2記載の発明にあっては、請求項1記載の発明の効果に加えて、通気口がアークと絶縁部材との接触により生じる脱ガスを排気するので、脱ガスによってアークが絶縁部材から遠ざけられることがなく十分に引き延ばすことができる封止接点装置を提供できるという効果を奏する。
【0061】
請求項3記載の発明にあっては、請求項1又は請求項2記載の発明の効果に加えて、突出部を設けることによりアークを突出部を迂回するような形状となり、よりアークを長く引き延ばすことができる封止接点装置を提供できるという効果を奏する。
【0062】
請求項4記載の発明にあっては、請求項1乃至請求項2記載の発明の効果に加えて、分割部材を設けることにより、同一アーク長であってもアーク電圧を上昇させることができ、より遮断性能を向上させることができる封止接点装置を提供できるという効果を奏する。
【図面の簡単な説明】
【図1】本発明の一実施の形態の封止接点装置の断面図である。
【図2】アーク駆動部の与える磁場の説明図である。
【図3】本発明の第一実施の形態の絶縁部材の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【図4】本発明の第二実施の形態の絶縁部材の一例の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【図5】本発明の第二実施の形態の絶縁部材の他の例の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【図6】本発明の第三実施の形態の絶縁部材の一例の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【図7】本発明の第四実施の形態の絶縁部材の一例の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【図8】アークを分割した場合のアーク電圧の説明図である。
【図9】本発明の第四実施の形態の絶縁部材の他の例の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【図10】本発明の第四実施の形態の絶縁部材の他の例の説明図であり、(a)は絶縁部材の平面図、(b)は絶縁部材の側面図を示す。
【図11】従来の技術の封止接点装置の断面図である。
【図12】アーク電圧とアーク長との関係の説明図である。
【図13】アークが引き延ばされている様子を説明する封止接点装置の断面図である。
【符号の説明】
1 封止容器
2a 固定接点
2 固定端子
3a 可動接点
3 可動接触子
4 可動軸
6 接圧ばね
7 固定鉄芯
8 可動鉄芯
9 復帰ばね
10 有底筒部
10a 底部
10b 開口部
11 第一の接合部材
12 第二の接合部材
14 アーク駆動部
15 絶縁部材
15b 絶縁立片
15f 接圧ばね絶縁立片
15g 通気口
15h 突出部
15i 分割部材
A 気密空間
BB 駆動部
S 接合部分
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealed contact device suitable for a power load relay, an electromagnetic switch or the like.
[0002]
[Prior art]
A conventional sealed contact device will be described below with reference to FIGS. FIG. 11 is a cross-sectional view of the sealed contact device. FIG. 12 is an explanatory diagram of the relationship between the arc voltage and the arc length. FIG. 13 is a cross-sectional view of the sealed contact device for explaining a state in which the arc is extended.
[0003]
Conventionally, in this type of sealing contact device shown in FIG. 11, a sealing container 1 made of an insulating material, a fixed terminal 2 provided with a fixed contact 2a and hermetically bonded to the sealing container 1, and a fixed A movable contact 3 provided with a movable contact 3a that contacts and separates from the contact 2a, and a movable iron core 8 that is movable so that the contact contacts and separates are housed on the bottom 10a side, and are fixed so as to be opposed to the movable iron core 8 and position-controlled. A bottomed cylindrical portion 10 in which the iron core 7 is housed on the opening 10b side, a first joining member 11 made of a metal material that is fixedly bonded to the bottomed cylindrical portion 10 with the fixed iron core 7 fixed thereto, and hydrogen Or the metal which forms the airtight space A for accommodating both a contact and both iron cores by airtightly joining to the sealing container 1 and the 1st joining member 11 so that gas mainly having hydrogen may be airtightly sealed. Second joining member 12 made of material, movable shaft 4 connected to movable iron core 8, and contact A return spring 9 for urging the movable iron core 8 in the separating direction, an arc generated between the fixed contact 2a and the movable contact 3a, and a joint portion between the sealing container 1 and the second joint member 12 An insulating member 15 having insulating standing pieces 15b, 15b for insulating the arc, an arc driving unit 14 for driving the arc for magnetic blow-off, and a contact pressure spring 6 for biasing the movable contact 3 in the contact contact direction. A holding member 5 for holding the contact pressure spring 6 in a compression suspension state so that the movable contact 3 is connected to the movable shaft 4 and a yoke 16 that joins the first joining member 11 to form a magnetic circuit. And a drive unit BB that drives and moves the movable iron core 8.
[0004]
In this sealed contact device, even when the movable contact 3a is removed from the fixed contact 2a, the arc generated in the airtight space A by the insulating standing pieces 15b and 15b is There is an advantage that the bonded portion between the second bonded member 12 and the second bonded member 12 is not contacted, and therefore the bonded portion is not damaged and the hermetically sealed gas does not leak out.
[0005]
[Problems to be solved by the invention]
By the way, as shown in FIG. 12, the arc voltage is composed of an anode drop voltage V1 generated at the positive contact portion, a cathode drop voltage V2 generated at the negative contact portion, and a positive column voltage V3 generated at the arc between the contacts. Our positive column voltage is proportional to the arc length. Therefore, the arc voltage becomes higher as the arc becomes longer, and the arc is extinguished when the arc voltage becomes higher than the power supply voltage of the circuit that opens the sealing contact device. The blocking performance is improved as much as possible.
[0006]
However, in the sealed contact device shown in FIG. 11 as described above, the airtight space A for extending the generated arc is small due to the presence of the insulating member 15, and the arc can be sufficiently extended. There are cases where it is not possible.
[0007]
As a result, the extended arc Ac1 shown in FIG. 13 does not rise to a sufficient arc voltage for extinction, and there is a problem that a current interruption failure may occur.
[0008]
Further, as shown in FIG. 13, the stretched arc Ac2 jumps to the contact pressure spring 6, shortening the arc length, and possibly causing the contact pressure spring 6 to be damaged.
[0009]
The present invention has been made to remedy the above problems, and an object of the present invention is to provide a sealed contact device that can extend an arc sufficiently long and has a good current interruption performance.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a sealing container made of an insulating material, a fixed terminal provided with a fixed contact and hermetically bonded to the sealing container, and a fixed contact. A movable contact with a movable contact that contacts and separates from and a movable iron core that moves so that the contact contacts and separates is stored at the bottom side, and a fixed iron core that controls the position opposite to the movable core is stored at the opening side. The bottomed tube portion, the first joining member made of a metal material that is fixed to the bottomed tube portion by fixing the fixed iron core, and hydrogen or hydrogen-based gas are hermetically sealed. A second joint member made of a metal material that forms an airtight space for accommodating both the contacts and both iron cores by being hermetically joined to the sealing container and the first joint member, and connected to the movable iron core. How to contact the movable shaft, the return spring that urges the movable iron core in the contact opening direction, and the movable contact A contact pressure spring that biases and applies a contact pressure, an arc generated between the fixed contact and the movable contact, and an insulating stand piece that insulates a joint portion between the sealing container and the second joint member In a sealed contact device comprising: an insulating member having an arc member; an arc driving unit that is driven to extinguish an arc; and a driving unit that drives and moves a movable iron core. A contact pressure spring insulating piece for insulating the extended arc and the contact pressure spring is provided on the insulating member.
[0011]
According to a second aspect of the present invention, the insulating member has a vent on a surface facing the arc.
[0012]
The invention according to claim 3 is characterized in that the insulating member has a projecting portion projecting from the surface to the arc side on the surface facing the arc.
[0013]
The invention according to claim 4 is characterized in that the insulating member is provided with a dividing member for dividing the arc on a surface facing the arc.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The first embodiment of the sealed contact device according to the present invention is based on FIGS. 1 to 3, the second embodiment is based on FIGS. 4 and 5, and the third embodiment is based on FIG. The fourth embodiment will be described with reference to FIGS.
[0015]
[First embodiment]
FIG. 1 is a cross-sectional view of a sealed contact device. FIG. 2 is an explanatory diagram of the magnetic field applied by the arc driving unit. 3A and 3B are explanatory views of the insulating member. FIG. 3A is a plan view of the insulating member, and FIG. 3B is a side view of the insulating member.
[0016]
This sealed contact device includes a sealed contact portion AA, a drive portion BB, and a housing CC.
[0017]
First, the sealed contact portion AA will be described. In FIG. 1, reference numeral 1 denotes a sealed container, which is formed in a box shape by opening one side with a heat-resistant material such as ceramic, and through holes 1a are provided at two places at the bottom. Reference numeral 2 denotes a fixed terminal, which is formed in a substantially multi-stage bottomed cylindrical shape with a copper-based material such as a copper alloy (Cu-Fe-based, Cu-Sn-based, Cu-Cr-based, etc.), for example, at one end on the bottom side. The fixed contact 2a is fixed, and a flange 2c is provided at the other end on the opening side. The fixed terminal 2 is airtightly joined to the sealing container 1 by brazing or the like in the vicinity of the flange 2c with the other end protruding from the sealing container 1. The fixed terminal 2 has a thread groove 2b formed inward from the opening side.
[0018]
Reference numeral 3 denotes a movable contact, which is formed into a flat plate shape by using a copper-based material such as a copper alloy (Cu-Fe-based, Cu-Sn-based, Cu-Cr-based, etc.), for example, and is spaced apart from the fixed contact 2a. The movable contact 3a is fixed to both ends.
[0019]
Reference numeral 4 denotes a movable shaft, which is formed in a substantially round bar shape from a nonmagnetic metal material such as stainless steel and an iron substitute molding material, and has one end 4a inserted through an insertion hole 3b provided in the central portion of the movable contact 3. Yes. The movable shaft 4 has a thread groove 4c cut at the other end 4b.
[0020]
5 is a movable contact holder corresponding to a holding member, which is made of an iron-based material or an aluminum alloy, and holds a contact pressure spring 6 (described later) in a compressed suspension state so that the movable contact 3 is connected to the movable shaft 4. It is.
[0021]
A contact pressure spring 6 is formed in a coil shape and is held in the movable contact holder 5. The contact pressure spring 6 urges the movable contact 3 in the contact direction of the two contacts 2a and 3a.
[0022]
Reference numeral 7 denotes a fixed iron core, one end portion 7a of which is expanded by a magnetic material such as electromagnetic soft iron, and an insertion hole 7b through which the movable shaft 4 is inserted is provided in the axial direction. The fixed iron core 7 is inserted into an insertion hole 11a of a first joining member 11 to be described later, and one end 7a is fixed, and a recess 7c having an inner diameter larger than the inner diameter of the insertion hole 7b is provided at the other end. It has been.
[0023]
8 is a movable iron core that can move so that both contacts 2a and 3a come into contact with and separate from each other, and is formed in a substantially cylindrical shape by a magnetic material such as electromagnetic soft iron. Is provided. In this insertion hole 8 a, the screw groove 8 b constituting the position adjusting means 20 that makes the connecting position of the movable shaft 4 and the movable iron core 8 variable along the axial direction of the movable shaft 4 together with the screw groove 4 c of the movable shaft 4. Is cut off. The movable iron core 8 has a face 8c facing the fixed iron core 7 at one end in the axial direction, and a recess 8d having an inner diameter larger than the inner diameter of the thread groove 8b at the other end. Yes.
[0024]
Reference numeral 9 denotes a return spring that urges the movable iron core 8 in the opening direction of both the contacts 2a and 3a, and is formed in a coil shape having an inner diameter slightly larger than the inner diameter of the insertion hole 7b of the fixed core 7. Then, it is inserted into the movable shaft 4 inserted through the insertion hole 7 b of the fixed iron core 7, and one end thereof is fitted into the concave portion 7 c of the fixed iron core 7 and the position is regulated.
[0025]
Reference numeral 10 denotes a bottomed cylindrical portion which is formed of a nonmagnetic metal material such as stainless steel and has a bottom portion 10a. The movable iron core 8 is accommodated on the bottom portion 10a side, and is opposed to the facing surface 8c of the movable iron core 8. The fixed iron core 7 is accommodated on the opening 10b side.
[0026]
Reference numeral 11 denotes a first joining member, which is formed in a rectangular shape from a magnetic material such as electromagnetic soft iron, and forms a magnetic circuit together with the fixed iron core 7 and the movable iron core 8. As described above, the first joining member 11 is provided with the insertion hole 11a through which the fixed core 7 is inserted before the one end portion 7a is fixed. The first joining member 11 is hermetically joined to the bottomed tubular portion 10 in the vicinity of the insertion hole 11a. The first joining member 11 is plated with copper in order to reduce gas permeation and outflow.
[0027]
Reference numeral 12 denotes a second joining member, which is made of a metal material such as 42 alloy and has a cylindrical shape with openings at both ends, and the opening end 12a of the opening on one end side and the opening end of the sealing container 1 1b is joined. The second joining member 12 is provided with a second joining portion 12b that is airtightly joined to the first joining member 11 at the other end. And this 2nd joining member 12 is airtightly joined to the sealing container 1 and the 1st joining member 11 which were mentioned above, and the airtight space for accommodating both the contacts 2a and 3a and both the iron cores 7 and 8 A is formed, and the gas-tight space A is hermetically sealed with a gas mainly composed of hydrogen, for example, at about 2 atm. The reason for enclosing the gas is to improve the cooling effect and to easily extinguish the arc.
[0028]
The arc drive unit 14 includes a permanent magnet 14a and a magnetic member 14b sandwiching the permanent magnet 14a, and the magnetic member is attached to the outer surface of the sealed container 1 so as to sandwich the fixed contact 2a and the movable contact 3a. Therefore, the arc drive unit 14 is in a direction perpendicular to the operation direction of the movable contact 3a in the space where both the contacts 2a and 3a shown in FIG. 2 exist (the direction of the arrow in FIG. 2 and the depth direction in front of the page in FIG. 1). Give a magnetic field.
[0029]
The insulating member 15 prevents the arc generated between the contacts 2a and 3a from touching the joining portion S between the opening end 12a and the opening end 1b of the sealing container 1 and the first joining member 11. is there. The insulating member 15 is made of a hydrogen supply material such as urea or unsaturated polyester that generates hydrogen when touched by an arc and does not generate so much free carbon. The insulating member 15 may be any material having an insulating property, and may be, for example, alumina-containing nylon or ceramic.
[0030]
Specifically, as shown in FIG. 3, the insulating member 15 includes a flat insulating plate portion 15 a that covers the first bonding member 11, and contacts 2 a and 3 a provided on both sides of the insulating plate portion 15 a in the arc driving direction. Insulating side pieces 15c, 15c, 15c extending in the arc drive direction so as to approach each other from both ends in the magnetic field direction of the insulating standing pieces 15b, 15b. , 15c.
[0031]
Both ends of the insulating plate 15a in the arc driving direction protrude slightly outward from the extending position of the insulating upright pieces 15b and 15b to form protruding pieces 15d and 15d. A through hole 15e for inserting the movable shaft 4 is provided at a substantially central portion of the insulating plate portion 15a.
[0032]
A contact pressure spring insulating piece 15f is provided between the through hole 15e and the insulating upright piece 15b and in the vicinity of the through hole 15e. The contact pressure spring insulating piece 15f prevents the arc from touching the contact pressure spring 6 of the movable contact holder 5 attached to the movable shaft 4 inserted through the through hole 15e. As shown in FIG. 1, leaf springs 15 f and 15 f corresponding to urging means are disposed between the insulating plate portion 15 a and the first joining member 11. The leaf springs 15 f and 15 f urge the insulating member 15 in the direction away from the first joining member 11.
[0033]
In the state in which the insulating member 15 is housed in the sealed container 1, first, the insulating plate portion 15 a tightly covers the first bonding member 11 and the bonding portion S. Further, since the insulating side pieces 15c, 15c, 15c, 15c are continuously provided from the side portions of the insulating upright pieces 15b, 15b, even if the arc is driven slightly obliquely from the arc drive direction, Will not touch.
[0034]
Furthermore, since the contact pressure spring insulating stand 15 f covers the contact pressure spring 6, the arc does not jump to the contact pressure spring 6.
[0035]
Next, the drive unit BB will be described. This drive part BB comprises an electromagnet apparatus with the fixed iron core 7, the movable iron core 8, and the 1st joining member 11. As shown in FIG. 13 is a coil and is wound around the coil frame 13a. A yoke 16 includes a yoke body 16a and a bush 16b, and forms a magnetic circuit together with the fixed iron core 7, the movable iron core 8, and the first joining member 11. The yoke body 16a is formed in a U-shape with a central piece and both opposing pieces so as to surround the coil 13, and a through hole 16c is provided in the central piece. The bush 16b is formed in a cylindrical shape having a length that does not overlap with the fixed iron core 7 when disposed, and is inserted into the through hole 16c of the yoke body 16a. In the state where the yoke body 16a and the bush 16b are disposed, the above-described tube portion 10a of the bottomed tube portion 10 is located between the bush 16b of the yoke 16 and the movable iron core 8.
[0036]
The housing CC accommodates both the sealed contact portion AA and the drive portion BB.
[0037]
Next, the operation of this will be described. Before the excitation of the coil 13, the movable contact 3a faces the fixed contact 2a with a contact gap. When the coil 13 is excited, the movable iron core 8 is attracted to the fixed iron core 7 and moved, whereby the movable shaft 4 fixed to the movable iron core 8 is driven, and the movable contact 3a gradually reduces the contact gap. Then, it contacts the fixed contact 2a.
[0038]
When the excitation of the coil 13 is cut off, the movable contact 3 is returned mainly by the urging force of the contact pressure spring 6 and the return spring 9, and the movable contact 3a is separated from the fixed contact 2a, and the movable iron core is removed. 8 also returns by a predetermined distance and returns to the original state. The arc generated between the contacts at the time of return is sufficiently stretched in the direction of both ends of the movable contact 3 by the magnetic field of the arc driving unit 14 and extinguished.
[0039]
In the sealed contact device configured as described above, the contact pressure spring insulating stand 15f covers the contact pressure spring 6, so that the arc does not jump to the contact pressure spring 6, and the arc is shortened. In addition, damage to the contact pressure spring 6 can be prevented.
[0040]
[Second embodiment]
4A and 4B are explanatory views of the insulating member. FIG. 4A is a plan view of the insulating member, and FIG. 4B is a side view of the insulating member. 5A and 5B are explanatory views of the insulating member. FIG. 5A is a plan view of the insulating member, and FIG. 5B is a side view of the insulating member. 4 and 5, the same reference numerals are given to the same parts as those of the sealed contact device described in the first embodiment, and detailed description of the same parts is omitted. .
[0041]
The sealed contact device of the present embodiment shown in FIG. 4 is characterized by the following configuration, which is different from the sealed contact device described in the prior art.
[0042]
In other words, the vents 15g, 15g, 15g... Are provided on the surface of the insulating member 15 facing the arc.
[0043]
Ventilation holes 15g, 15g, 15g... Are formed in six portions on the left and right sides of the insulating plate portion 15a located between the insulating standing piece 15b and the contact pressure spring insulating standing piece 15f. It is a through hole of about [mm]. The diameter may be as large as the arc does not leak to the other surface side of the insulating plate portion 15a through the through hole.
[0044]
By providing the vents 15g, 15g, 15g, etc., degassing generated when the arc touches the insulating plate portion 15a can be exhausted to the surface side that does not face the arc. Therefore, the generated degassing does not keep the arc away from the insulating plate portion 15a, but it is extended to the vicinity of the insulating plate portion 15a, so that the arc length is not shortened.
[0045]
The vent holes 15g, 15g, 15g, etc. are not limited to those provided in the insulating plate portion 15a, but may be any surface as long as they face the arc of the insulating member 15. Therefore, as shown in FIG. The insulating upright piece 15f may be provided as a slit having a width of about 1.5 [mm].
[0046]
[Third embodiment]
6A and 6B are explanatory views of the insulating member. FIG. 6A is a plan view of the insulating member, and FIG. 6B is a side view of the insulating member. In addition, in FIG. 6, since the same code | symbol is attached | subjected to the location equivalent to the sealing contact apparatus demonstrated by the above-mentioned 1st embodiment, detailed description of an equivalent location is abbreviate | omitted.
[0047]
The sealed contact device according to the present embodiment shown in FIG. 6 is characterized by the following configuration, which is different from the sealed contact device described in the prior art.
[0048]
In other words, the surface of the insulating member 15 facing the arc is provided with a protruding portion 15h protruding from the surface to the arc side.
[0049]
The projecting portion 15h stands on the insulating plate portion 15a so as to be perpendicular to the arc extending direction (left and right direction on the paper surface) at a portion located approximately in the middle between the insulating standing piece 15b and the contact pressure spring insulating standing piece 15f. It is set.
[0050]
By providing the projecting portion 15h, the extended arc Ac3 has a shape that bypasses the projecting portion 15h as shown in FIG. 6B. Therefore, the arc is lengthened by an amount that bypasses the projecting portion 15h. Can be extended.
[0051]
Therefore, the arc voltage can be raised by the protrusion 15h, and the interruption performance can be improved.
[0052]
Note that the protruding portion 15h is not limited to being provided on the insulating plate portion 15 as long as it can bypass the stretched arc, and may be provided on the insulating standing piece 15b, for example. .
[0053]
[Fourth embodiment]
7A and 7B are explanatory views of the insulating member. FIG. 7A is a plan view of the insulating member, and FIG. 7B is a side view of the insulating member. FIG. 8 is an explanatory diagram of the arc voltage when the arc is divided. FIG. 9 is an explanatory view of an insulating member, (a) is a plan view of the insulating member, and (b) is a side view of the insulating member. 10A and 10B are explanatory views of the insulating member. FIG. 10A is a plan view of the insulating member, and FIG. 10B is a side view of the insulating member. 7 to 9, the same reference numerals are given to the same parts as those of the sealed contact device described in the first embodiment, and detailed description of the same parts is omitted. .
[0054]
The sealed contact device according to the present embodiment shown in FIGS. 7, 9, and 10 is characterized by the following configuration, unlike the sealed contact device described in the prior art.
[0055]
In other words, the dividing member 15 i for dividing the arc is provided on the surface of the insulating member 15 facing the arc.
[0056]
The divided member 15i is a plate member made of a metal member, and covers substantially the entire surface of the insulating plate portion 15a, which is surrounded by the insulating standing piece 15b, the contact pressure spring insulating standing piece 15f, and the insulating side piece 15c. It is provided so as to cover it.
[0057]
By providing the dividing member 15i, the arc is divided into a portion between the fixed contact 2a and the dividing member 15i and a portion between the movable contact 3a and the dividing member 15i. Then, as shown in FIG. 8, by dividing the arc, the cathode drop voltages V2 and V4 and the anode drop voltages V1 and V3 are generated at two locations, respectively, and the arc voltage is increased even with the same arc length. And the blocking performance can be improved.
[0058]
In this embodiment, the dividing member 15i is provided on the insulating plate 15a. However, the present invention is not limited to this, and the dividing member 15i may be provided on the insulating standing piece 15b as shown in FIG. As shown, it may be provided on the contact pressure spring insulating upright 15f.
[0059]
【The invention's effect】
Since the sealed contact device of the present invention is configured as described above, in the first aspect of the present invention, the contact pressure spring insulating stand piece is driven by an arc drive section and stretched, and the arc Insulation from the contact pressure spring prevents the arc from jumping to the contact pressure spring, thereby preventing the arc from being shortened and preventing the contact pressure spring from being damaged, and sealing with good current interruption performance. There is an effect that a contact device can be provided.
[0060]
In the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the vent exhausts the degassing caused by the contact between the arc and the insulating member, the arc is removed from the insulating member by degassing. There is an effect that it is possible to provide a sealed contact device that can be sufficiently extended without being moved away.
[0061]
In the invention according to claim 3, in addition to the effect of the invention according to claim 1 or claim 2, by providing the protruding portion, the arc is shaped to bypass the protruding portion, and the arc is extended longer. It is possible to provide a sealed contact device that can be used.
[0062]
In the invention according to claim 4, in addition to the effects of the invention according to claims 1 to 2, by providing the dividing member, the arc voltage can be increased even with the same arc length, There is an effect that it is possible to provide a sealed contact device capable of further improving the breaking performance.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a sealed contact device according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram of a magnetic field applied by an arc driving unit.
3A and 3B are explanatory views of an insulating member according to the first embodiment of the present invention, in which FIG. 3A is a plan view of the insulating member, and FIG. 3B is a side view of the insulating member.
4A and 4B are explanatory views of an example of an insulating member according to a second embodiment of the present invention, in which FIG. 4A is a plan view of the insulating member, and FIG. 4B is a side view of the insulating member.
5A and 5B are explanatory views of another example of the insulating member according to the second embodiment of the present invention, in which FIG. 5A is a plan view of the insulating member, and FIG. 5B is a side view of the insulating member.
6A and 6B are explanatory views of an example of an insulating member according to a third embodiment of the present invention, where FIG. 6A is a plan view of the insulating member, and FIG. 6B is a side view of the insulating member.
7A and 7B are explanatory views of an example of an insulating member according to a fourth embodiment of the present invention, in which FIG. 7A is a plan view of the insulating member, and FIG. 7B is a side view of the insulating member.
FIG. 8 is an explanatory diagram of an arc voltage when an arc is divided.
9A and 9B are explanatory views of another example of the insulating member according to the fourth embodiment of the present invention, in which FIG. 9A is a plan view of the insulating member, and FIG. 9B is a side view of the insulating member.
10A and 10B are explanatory views of another example of the insulating member according to the fourth embodiment of the present invention, in which FIG. 10A is a plan view of the insulating member, and FIG. 10B is a side view of the insulating member.
FIG. 11 is a cross-sectional view of a prior art sealed contact device.
FIG. 12 is an explanatory diagram of a relationship between an arc voltage and an arc length.
FIG. 13 is a cross-sectional view of a sealed contact device for explaining how an arc is extended.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sealing container 2a Fixed contact 2 Fixed terminal 3a Movable contact 3 Movable contact 4 Movable shaft 6 Contact pressure spring 7 Fixed iron core 8 Movable iron core 9 Return spring 10 Bottomed cylinder part 10a Bottom part 10b Opening part 11 First joining Member 12 Second joining member 14 Arc driving portion 15 Insulating member 15b Insulating standing piece 15f Contact pressure spring insulating standing piece 15g Vent 15h Protruding portion 15i Dividing member A Airtight space BB Driving portion S Joining portion

Claims (4)

絶縁材料製の封止容器と、固定接点を設け封止容器に気密接合される固定端子と、固定接点に接離する可動接点を設けた可動接触子と、接点が接離するよう可動する可動鉄芯が底部側にその可動鉄芯に対向して位置規制する固定鉄芯が開口部側にそれぞれ収納される有底筒部と、固定鉄芯を固着して有底筒部に気密接合される金属材料製の第一の接合部材と、水素又は水素を主体とするガスが気密封止されるよう封止容器及び第一の接合部材に気密接合されることによって両接点及び両鉄芯を収容するための気密空間を形成する金属材料製の第二の接合部材と、可動鉄芯に連結される可動軸と、接点開離方向へ可動鉄芯を付勢する復帰ばねと、可動接触子を接点当接方向に付勢して接圧を与える接圧ばねと、前記固定接点と可動接点との間に発生するアーク及び前記封止容器と第二の接合部材との間の接合部分を絶縁する絶縁立片を有する絶縁部材と、アークを消弧するために駆動するアーク駆動部と、可動鉄芯を駆動して可動させる駆動部と、を備えた封止接点装置において、
前記アーク駆動部によって駆動され引き延ばされたアークと前記接圧ばねとを絶縁する接圧ばね絶縁立片を前記絶縁部材に設けたことを特徴とする封止接点装置。
A sealing container made of an insulating material, a fixed terminal provided with a fixed contact and hermetically bonded to the sealing container, a movable contact provided with a movable contact that contacts and separates from the fixed contact, and a movable that moves so that the contact contacts and separates A fixed iron core is housed on the opening side of the fixed iron core, which is positioned on the bottom side, and the position of the fixed iron core is restricted to the movable iron core. The first joint member made of a metal material and the two contacts and both iron cores are hermetically joined to the sealing container and the first joint member so that hydrogen or hydrogen-based gas is hermetically sealed. A second joining member made of a metal material that forms an airtight space for housing, a movable shaft connected to the movable iron core, a return spring that biases the movable iron core in the contact opening direction, and a movable contactor Between the fixed contact and the movable contact, and a contact pressure spring that urges the contact in the contact direction to apply contact pressure. An insulating member having an insulating standing piece that insulates the generated arc and a joint portion between the sealed container and the second joint member, an arc driving unit that is driven to extinguish the arc, and a movable iron core. In a sealed contact device comprising a drive unit that is driven and movable,
A sealed contact device, wherein the insulating member is provided with a contact pressure spring insulation standup that insulates the contact pressure spring and the arc driven and stretched by the arc drive section.
前記絶縁部材は、アークに臨む面に、通気口を有することを特徴とする請求項1記載の封止接点装置。The sealed contact device according to claim 1, wherein the insulating member has a vent on a surface facing the arc. 前記絶縁部材は、アークに臨む面に、該面からアークの側に突出する突出部を有することを特徴とする請求項1又は請求項2記載の封止接点装置。The sealed contact device according to claim 1, wherein the insulating member has a projecting portion projecting from the surface to the arc side on a surface facing the arc. 前記絶縁部材は、アークに臨む面に、アークを分割する分割部材を設けたことを特徴とする請求項1乃至請求項3記載の封止接点装置。4. The sealed contact device according to claim 1, wherein the insulating member is provided with a dividing member for dividing the arc on a surface facing the arc.
JP13507297A 1997-05-26 1997-05-26 Sealed contact device Expired - Lifetime JP3711698B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13507297A JP3711698B2 (en) 1997-05-26 1997-05-26 Sealed contact device

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Application Number Priority Date Filing Date Title
JP13507297A JP3711698B2 (en) 1997-05-26 1997-05-26 Sealed contact device

Publications (2)

Publication Number Publication Date
JPH10326530A JPH10326530A (en) 1998-12-08
JP3711698B2 true JP3711698B2 (en) 2005-11-02

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Publication number Priority date Publication date Assignee Title
JP4458062B2 (en) * 2006-04-25 2010-04-28 パナソニック電工株式会社 Electromagnetic switchgear
EP3089189B1 (en) 2008-03-19 2018-06-27 Panasonic Intellectual Property Management Co., Ltd. Contact device
JP4600499B2 (en) * 2008-03-19 2010-12-15 パナソニック電工株式会社 Contact device
EP2549507B1 (en) 2010-03-15 2017-03-29 Omron Corporation Contact switching device
JP5567952B2 (en) * 2010-09-10 2014-08-06 パナソニック株式会社 Contact device
US8674796B2 (en) 2010-11-01 2014-03-18 Ngk Spark Plug Co., Ltd. Relay
KR200486560Y1 (en) * 2014-01-27 2018-06-07 엘에스산전 주식회사 Electromagnetic relay
JP6345264B2 (en) * 2014-10-17 2018-06-20 日立オートモティブシステムズ株式会社 Magnetic switch for starter
CN107591286A (en) * 2017-08-28 2018-01-16 贵州天义电器有限责任公司 A kind of clapper type relay with arc extinguishing auxiliary contact
CN108831803A (en) * 2018-08-08 2018-11-16 三友联众集团股份有限公司 A kind of sealed contact assembly for contactor
CN112276406A (en) * 2020-11-24 2021-01-29 常熟市天银机电股份有限公司 Welding platform structure of motor starting protector movable contact welding machine

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