JP3792019B2

JP3792019B2 - Drawer type opening / closing device and its locking device

Info

Publication number: JP3792019B2
Application number: JP26461397A
Authority: JP
Inventors: 浩一七田; 尊士大城; 哲典河田
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1997-09-29
Filing date: 1997-09-29
Publication date: 2006-06-28
Anticipated expiration: 2017-09-29
Also published as: CN1213205A; JPH11103509A; KR19990030096A; CN1118913C; KR100337115B1

Description

【０００１】
【発明の属する技術分野】
本発明は、主として閉鎖配電盤内に組み込まれる引出式開閉機器、及び該開閉機器に用いるのに好敵な鎖錠装置に関する。
【０００２】
【従来の技術】
閉鎖配電盤は、接地金属製の箱体として構成された外箱の内部を接地金属又は絶縁材からなる隔壁により相互に仕切って複数の収容室を形成し、これらの収容室の夫々に、共通母線に接続された母線側分岐導体、他の電気室、負荷機器等の負荷への送電のための送電ケーブルに接続された負荷側導体、両導体を接離する遮断器を用いてなる開閉機器、監視制御に必要な制御機器を収納した構成となっている。
【０００３】
このような閉鎖配電盤においては、前記配設室の夫々の内部点検に際し、内部機器の残留電圧による点検作業者の感電事故を防ぐべく、点検前に内部機器を無電圧化する必要がある。このため、例えば特開平４−５４８０７号公報に記載されているように、前記開閉機器を、該開閉機器を収容する収容室内に配設される所定長さの案内部材に沿って試験位置から運転位置まで移動自在とし、内部点検に際しては、収容室において前記開閉機器を案内部材に沿って試験位置に引出し、母線側分岐導体と負荷側導体とを確実に断路するように構成されている。
【０００４】
次にこの従来の引出式開閉機器を、図８〜図１５に基づいて説明する、図８は引出式開閉機器の正面図、図９は側面図、図１０は接続プラグの近傍を示す部分拡大正面図、図１１は図１０のＸ−Ｘ線断面図、図１２は図１０の固定プラグに可動プラグを接続した状態の説明図、図１３は開閉機器を移動させた状態の説明図である。
【０００５】
従来の引出式開閉機器Ｅは、開閉回路及び該開閉回路に接続される固定プラグＦが設けられ、所定長さの案内部材Ｇに沿って図９(a) に示す試験位置から図９(b) の運転位置まで移動可能な機器本体Ｈと、該機器本体Ｈの移動を拘束して鎖錠する鎖錠装置Ｊとを備えている。
【０００６】
機器本体Ｈの前面右下部には前記固定プラグＦ及び鎖錠装置Ｊが設けられ、機器本体Ｈの背面には、前記母線側分岐導体及び負荷側導体に接続された接触子Ｙ，Ｙと接離自在に接続される接触子Ｚ，Ｚが設けられている。また、機器本体Ｈの正面左右下部には、前記案内部材Ｇに沿って転動自在の車輪Ｋ，Ｋが設けられている。
【０００７】
前記固定プラグＦには、前記制御機器に接続された可動プラグＬが機器本体Ｈの正面側から着脱自在に接続されている。また、固定プラグＦの上下面には、コ字形のプラグフックＭが枢支され、前記可動プラグＬの固定プラグＦに対する移動を拘束している。
【０００８】
鎖錠装置Ｊは、機器本体Ｈの右側面に一つの横軸Ｎを介して揺動自在に支持されるフック形状の鎖錠体Ｏ、及びプラグカバーＰと、前記鎖錠体Ｏを揺動方向一方側に付勢する付勢ばねＱと、機器本体Ｈから突設された支持金具に横移動自在に支持された鎖錠解除杆Ｒとを備えている。
【０００９】
この鎖錠解除杆Ｒは、前記固定プラグＦに可動プラグＬが接続されたとき、鎖錠体Ｏの揺動を拘束して鎖錠解除にするもので、その一端は、前記鎖錠体Ｏに突設された突起Ｏ１に当接し、他端は、前記固定プラグＦの内部に達している。そして、鎖錠解除杆Ｒの他端と係合可能な押圧部Ｓが前記可動プラグＬに設けられている。
【００１０】
鎖錠体Ｏは、前記案内部材Ｇと平行に配設された固定条体Ｄの一端部ｄとの係合により機器本体Ｈの移動を鎖錠する凹状の移動鎖錠部Ｏ２が設けられている。
【００１１】
プラグカバーＰは、図１５に示すように、機器本体Ｈへの支持部と反対側端部に折曲げ形成され、前記固定及び可動プラグＦ，Ｌの接続状態を保持する接続保持部Ｐ１と、前記機器本体Ｈが移動したとき、前記プラグカバーＰの揺動を拘束する揺動拘束部Ｐ２と、前記固定条体Ｄの一端に突設された突起部Ｄ１と当接する当接部Ｐ３と、機器本体Ｈに突設された案内ピンＴを受入れる円弧状の案内孔Ｐ４とが設けられている。
【００１２】
以上の如く構成された引出式開閉機器Ｅは、試験位置に引出されている開閉機器Ｅの固定プラグＦに可動プラグＬを接続すると、押圧部Ｓが鎖錠解除杆Ｒを押込み、鎖錠体Ｏが付勢ばねＱに抗して横軸Ｎを中心として図１１時計方向に揺動し、図１２の状態となる（接続検出、鎖錠解除）。
【００１３】
次に、開閉機器Ｅを案内部材Ｇに沿って運転位置へ移動する場合、該移動に伴いプラグカバーＰの当接部Ｐ３が図１２に示すように固定条体Ｄの突起部Ｄ１と当接し、プラグカバーＰは横軸Ｎを中心として図１２時計方向に揺動する。従って、試験位置から運転位置への移動途中では図１３に示す状態となり、可動プラグＬの前面をプラグカバーＰの接続保持部Ｐ１が覆い、可動プラグＬの接離が拘束される（接離防止）。
【００１４】
また、試験位置において、可動プラグＬを接続せずに開閉機器Ｅを運転位置に移動させようとする場合、鎖錠体Ｏは図１１のように固定条体Ｄ側に付勢されている状態であるから、その移動鎖錠部Ｏ２が固定条体Ｄの一端部ｄと当接し、開閉機器Ｅの移動は拘束される（鎖錠）。
【００１５】
また、以上のように試験位置に引出されている機器本体Ｈの固定プラグＦに可動プラグＬを接続した場合、前記プラグフックＭを図１４の破線で示す位置から実線で示す位置まで時計方向に回動させることにより、可動プラグＬのピンをプラグフックＭの係合孔に取り込んでロックすることができる。可動プラグＬをプラグフックＭによりロックした後、開閉機器Ｅを運転位置へ向けて移動させると、プラグフックＭの操作部は試験位置より移動直後から運転位置までの範囲においてロックカバーＵによって覆われた状態となり、操作部を操作することは困難になる。
【００１６】
【発明が解決しようとする課題】
ところが、上述のように引出式開閉機器Ｅの鎖錠装置Ｊは、鎖錠体Ｏと、プラグカバーＰと、鎖錠解除杆Ｒとを備えた構造であるから、部品点数が多いのである。従って、加工、及び組立て作業性が悪くて、コスト高になるという問題があった。
【００１７】
本発明は斯かる事情に鑑みてなされたものであり、機器本体に揺動可能に支持される鎖錠体に、移動鎖錠部と、鎖錠解除部と、接続保持部と、揺動拘束部とを設けることにより、鎖錠装置の機能を損なうことなく、鎖錠装置の部品点数を少なくすることができ、加工、及び組立て作業性を向上できて、安価に構成することができる引出式開閉機器及びその鎖錠装置を提供することを目的とする。
【００１８】
【課題を解決するための手段】
第１発明に係る引出式開閉機器は、可動プラグが着脱自在に接続される固定プラグ及び該固定プラグに接続される開閉回路が設けられ、所定の案内部材に沿って引出し移動が可能な機器本体と、該機器本体を鎖錠する鎖錠装置とを備え、該鎖錠装置は、前記機器本体に一つの揺動中心を支点として揺動可能に支持され、且つ付勢ばねにより揺動方向一方に付勢される鎖錠体を用いてなり、該鎖錠体は、前記揺動中心に対して揺動方向一方側に、前記固定プラグに接続された可動プラグとの係合により前記鎖錠体の揺動方向一方への揺動を拘束して鎖錠を解除する鎖錠解除部と、前記固定及び可動プラグの接続状態を保持する接続保持部と、前記機器本体が前記案内部材に沿って移動したとき、前記鎖錠体の揺動方向他方への揺動を拘束する揺動拘束部とを有しており、前記揺動中心に対して揺動方向他方側に、前記案内部材との係合により機器本体の移動を拘束して鎖錠する移動鎖錠部を有しており、接続されている可動プラグに前記鎖錠解除部が係合する位置において前記移動鎖錠部は非係合位置にあり、可動プラグが接続されていない位置において前記移動鎖錠部は係合位置にあり、前記可動プラグの接続の有無に応じて前記揺動中心を支点とて揺動するように構成してあることを特徴とする。
【００１９】
第２発明に係る引出式開閉機器は、前記鎖錠体が一枚の板体により形成されていることを特徴とする。
【００２０】
第３発明に係る引出式開閉機器は、前記鎖錠体が一本の線材により形成されていることを特徴とする。
【００２１】
第４発明に係る引出式開閉機器の鎖錠装置は、可動プラグが着脱自在に接続される固定プラグ及び該固定プラグに接続される開閉回路が設けられ、所定の案内部材に沿って引出し移動が可能な引出式開閉機器に装着されて、該開閉機器を鎖錠する鎖錠装置は、前記開閉機器に一つの揺動中心を支点として揺動可能に支持され、且つ付勢ばねにより揺動方向一方に付勢される鎖錠体を用いてなり、該鎖錠体は、前記揺動中心に対して揺動方向一方側に、前記固定プラグに接続された可動プラグとの係合により前記鎖錠体の揺動方向一方への揺動を拘束して鎖錠を解除する鎖錠解除部と、前記固定及び可動プラグの接続状態を保持する接続保持部と、前記機器本体が前記案内部材に沿って移動したとき、前記鎖錠体の揺動方向他方への揺動を拘束する揺動拘束部とを有しており、前記揺動中心に対して揺動方向他方側に、前記案内部材との係合により機器本体の移動を拘束して鎖錠する移動鎖錠部を有しており、接続されている可動プラグに前記鎖錠解除部が係合する位置において前記移動鎖錠部は非係合位置にあり、可動プラグが接続されていない位置において前記移動鎖錠部は係合位置にあり、前記可動プラグの接続の有無に応じて前記揺動中心を支点とて揺動するように構成してあることを特徴とする。
【００２２】
【発明の実施の形態】
実施の形態１．
以下本発明をその実施の形態を示す図面に基づいて詳述する。図１は開閉機器の一部を省略した側面図、図２は開閉機器の一部を省略した正面図、図３は作動状態を示す説明図、図４は作動過程を示す説明図、図５は開閉機器が内装される閉鎖配電盤を模式的に示す側面図である。
【００２３】
閉鎖配電盤は、図５に示すように、矩形箱形をなす金属製の外箱１の内部が、接地金属又は絶縁材製の隔壁により母線室１ａと、ケーブル室１ｂと、開閉機器室１ｃと、制御機器室１ｄとに仕切られ、母線室１ａには母線側分岐導体Ａが配設され、ケーブル室１ｂには負荷側導体Ｂが配設され、開閉機器室１ｃには開閉機器Ｃが移動自在に配設され、制御機器室１ｄには制御機器（図示せず）が収納されている。
【００２４】
また、開閉機器室１ｃには、前記開閉機器Ｃを試験位置から運転位置まで移動自在に案内する一対の案内部材２，２が横方向に所定間隔を隔てて配設されている。これら案内部材２，２は、上下に所定間隔を隔てて対向する上案内部片２１及び下案内部片２２と、これら上案内部片２１，下案内部片２２を連結する連結部片２３とにより断面コ字形に形成されている。右案内部材２の長さ方向一端部には、前記上案内部片２１及び連結部片２３を切欠いて、切欠部２ａが設けられている。
【００２５】
開閉機器Ｃは、開閉回路及び該開閉回路に接続される固定プラグ３が設けられた機器本体４と、該機器本体４の試験位置から運転位置への移動を拘束して鎖錠する鎖錠装置５とを備えている。
【００２６】
固定プラグ３には、前記制御機器に接続された可動プラグ６が機器本体４の正面側から着脱自在に接続されている。また、固定プラグ３の上下面には、コ字形のプラグフック３１が回動自在に取付けられ、前記可動プラグ６の固定プラグ３に対する移動を拘束することができるようにしている。
【００２７】
機器本体４の正面右下部には、前記固定プラグ３及び鎖錠装置５が設けられ、さらに正面左右下部には、前記案内部材２，２に沿って転動自在の車輪７，７が設けられ、これら車輪７，７により機器本体４を移動自在としている。
【００２８】
鎖錠装置５は、機器本体４の右側面に上下に所定間隔を隔てて対向する一対の支持片４ａ，４ａ間に架設された縦方向の支持軸８を介して揺動自在に支持される一つの鎖錠体５０を用いてなる。この鎖錠体５０は、一つの揺動中心としての前記支持軸８に巻装されたコイル状の付勢ばね９により図４(a)の時計方向に付勢されている。
【００２９】
図１〜図４に示した実施の形態１の鎖錠体５０は、一枚の板体により形成され、その前後方向中央部の上下端には、一対の屈曲片５ａ，５ａが突設され、これら屈曲片５ａ，５ａに穿設された貫通孔に前記支持軸８が挿嵌されている。
【００３０】
板体を用いてなる鎖錠体５０には、図１に示すように、揺動中心に対し移動方向後下端部（換言すれば揺動方向後下端部）に、支持位置よりも下方に突出して前記案内部材２の切欠部２ａの上案内部片２１に当接可能な移動鎖錠部５１が設けられ、揺動中心に対し移動方向前上端部（換言すれば揺動方向前上端部）に、支持位置よりも上方に突出して、固定プラグ３に接続された可動プラグ６の一側面と接触して鎖錠体５０の付勢ばね９による揺動方向一方への揺動を拘束する鎖錠解除部５２と、該鎖錠解除部５２の前端から前記固定プラグ３側に屈曲する接続保持部５３とが設けられ、揺動中心に対し移動方向前下端部（換言すれば揺動方向前下端部）に、支持位置よりも下方に突出して前記案内部材２の上案内部片２１の先端縁２１ａと接触可能な揺動拘束部５４が設けられている。
【００３１】
以上の如く構成された引出式開閉機器Ｃは、案内部材２に沿って試験位置に引き出された機器本体４の固定プラグ３に可動プラグ６を接続することなく開閉機器Ｃを運転位置に移動させようとする場合、鎖錠体５０は付勢ばね９により図４(a) のように案内部材２側に付勢されている状態であるから、その移動鎖錠部５１が案内部材２の切欠部２ａの上案内部片２１に当接し、開閉機器Ｃの移動は拘束される（鎖錠）。
【００３２】
また、試験位置に引出されている開閉機器Ｃの固定プラグ３に可動プラグ６を接続する場合、図４(b) のように鎖錠体５０を付勢ばね９に抗して反時計方向に揺動させることにより、接続保持部５３を可動プラグ６の接続経路から後退させることができる。従って、可動プラグ６を固定プラグ３に容易に接続することができる。尚、鎖錠体５０を付勢ばね９に抗して図４(b) の反時計方向に揺動させる場合、案内部材２の一端部には、前記切欠部２ａが設けられていて、前記揺動拘束部５４が案内部材２と干渉しないようにしているため、鎖錠体５０は上述のように揺動させることができる。
【００３３】
この可動プラグ６の接続後、鎖錠体５０は付勢ばね９の力で図４(b) の時計方向に揺動し、鎖錠解除部５２が図４(C) のように可動プラグ６の一側面に接触して鎖錠体５０の付勢ばね９による揺動が拘束され、該鎖錠体５０は案内部材２と平行状となる。従って、移動鎖錠部５１が案内部材２の切欠部２ａの上案内部片２１に当接するのを防止することができ、機器本４を案内部材２に沿って移動させることができる状態となる（接続検出、鎖錠解除）。
【００３４】
この場合、図４(C) のように接続保持部５３が可動プラグ６の接続経路に入って可動プラグ６の前面と対向することになるから、可動プラグの引き抜きを防止することができ、固定プラグ３及び可動プラグ６の接続状態を保持することができる。
【００３５】
以上のように可動プラグ６を固定プラグ３に接続した場合、鎖錠体５０の付勢ばね９による揺動を拘束して鎖錠を解除した状態にすることができるから、開閉機器Ｃを案内部材２，２に沿って試験位置から運転位置に移動させることができる。この開閉機器Ｃの移動に伴い、揺動拘束部５４が案内部材２の上案内部片２１の先端縁２１ａと接触して、鎖錠体５０の揺動が案内部材２により拘束されるから、固定プラグ３及び可動プラグ６の接続状態を確実に保持することができる。
【００３６】
実施の形態２．
次に図６に示した実施の形態２について説明する。
この実施の形態２は、鎖錠体５０を、実施の形態１のように縦方向の支持軸８を介して揺動自在に支持する代わりに、図６に示すように横方向の支持軸８Ａを介して揺動自在に支持したもので、基本的な構成は実施の形態１と同じであるから、共通点の図面及び詳細な説明を省略する。
【００３７】
図６に示した実施の形態２は、機器本体４の右側面に横方向に突設された支持軸８Ａを介して揺動自在に支持される一つの鎖錠体５０Ａを用いている。この鎖錠体５０Ａは、一枚の略三角形状の板体により形成され、その上下中途部に穿設された貫通孔に前記支持軸８Ａが挿嵌され、鎖錠体５０Ａと機器本体４との間に付勢ばね９Ａを介在させている。
【００３８】
板体を用いてなる鎖錠体５０Ａには、図６に示すように、揺動中心に対し移動方向後下端部（換言すれば揺動方向後下端部）に、前記案内部材２の切欠部２ａの上案内部片２１に当接可能な移動鎖錠部５１Ａが設けられ、揺動中心に対し移動方向前上端部（換言すれば揺動方向前上端部）に、固定プラグ３側に屈曲し、固定プラグ３に接続された可動プラグ６の前面と接触して鎖錠体５０Ａの付勢ばね９Ａによる揺動を拘束する鎖錠解除部５２Ａ及び接続保持部５３Ａが設けられ、揺動中心に対し移動方向前下端部（換言すれば揺動方向前下端部）に、前記案内部材２の上案内部片２１の上面と接触可能な揺動拘束部５４Ａが設けられている。
【００３９】
以上の如く構成された実施の形態２の引出式開閉機器Ｃは、案内部材２に沿って試験位置に引き出された開閉機器Ｃの固定プラグ３に可動プラグ６を接続することなく開閉機器Ｃを運転位置に移動させようとする場合、鎖錠体５０Ａは付勢ばね９Ａにより図６の位置、即ち、移動鎖錠部５１Ａが前記案内部材２の切欠部２ａ内に入る位置に付勢保持されている状態であるから、その移動鎖錠部５１Ａが案内部材２の切欠部２ａの上案内部片２１に当接し、開閉機器の移動は拘束される（鎖錠）。
【００４０】
また、試験位置に引出されている開閉機器の固定プラグ３に可動プラグ６を接続する場合、鎖錠体５０Ａを付勢ばね９Ａに抗して反時計方向に揺動させることにより、接続保持部５３Ａを可動プラグ６の接続経路から後退させることができる。従って、可動プラグ６を固定プラグ３に容易に接続することができる。尚、鎖錠体５０Ａを付勢ばね９Ａに抗して図６の反時計方向に揺動させる場合、案内部材２の一端部には、前記切欠部２ａが設けられていて、前記揺動拘束部５４Ａが案内部材２と干渉しないようにしているため、鎖錠体５０Ａは上述のように揺動させることができる。
【００４１】
この可動プラグ６の接続後、鎖錠体５０Ａは付勢ばね９Ａの力で揺動し、鎖錠解除部５２Ａ及び接続保持部５３Ａが可動プラグ６の前面に接触して鎖錠体５０Ａの付勢ばね９Ａによる揺動が拘束され、該鎖錠体５０Ａの下端は案内部材２と平行状となる。従って、移動鎖錠部５１Ａが案内部材２の切欠部２ａの上案内部片２１に当接するのを防止することができ、開閉機器Ｃを案内部材２に沿って移動させることができる状態となる（接続検出、鎖錠解除）。
【００４２】
この場合、鎖錠解除部５２Ａ及び接続保持部５３Ａが可動プラグ６の前面と対向することになるから、可動プラグ６の引き抜きを防止することができ、固定プラグ３及び可動プラグ６の接続状態を保持することができる。
【００４３】
以上のように可動プラグ６を固定プラグ３に接続した場合、鎖錠体５０Ａの付勢ばね９Ａによる揺動を拘束して鎖錠を解除した状態にすることができるから、開閉機器Ｃを案内部材２に沿って試験位置から運転位置に移動させることができる。この開閉機器Ｃの移動に伴い、揺動拘束部５４Ａが案内部材２の上案内部片２１の上面と接触して、鎖錠体５０Ａの揺動が案内部材２により拘束されるから、固定プラグ３及び可動プラグ６の接続状態を確実に保持することができる。
【００４４】
実施の形態３．
次に図７に示した実施の形態３について説明する。
この実施の形態３は、横方向の支持軸８Ａを介して機器本体４に揺動自在に支持した鎖錠体５０Ａを、実施の形態２のように一枚の板体により形成する代わりに、図７に示すように一本の線材の折り曲げにより形成したもので、基本的な構成は実施の形態１及び２と同じであるから、共通点の図面及び詳細な説明を省略する。
【００４５】
図７に示した実施の形態３は、機器本体４の右側面に横方向に突設された支持軸８Ａを介して揺動自在に支持される一つの鎖錠体５０Ｂを用いている。この鎖錠体５０Ｂは、上下方向に延び、移動方向前後に配置される第１杆部片５５及び第２杆部片５６と、第１杆部片５５の上端及び第２杆部片５６の下端を連結する連結杆部片５７とを備え、該連結杆部片５７の中途部に支持片５８が設けられ、該支持片５８に穿設された貫通孔に前記支持軸８Ａが挿嵌され、連結杆部片５７と機器本体４との間に前記付勢ばね９Ａを介在させている。
【００４６】
線材を用いてなる鎖錠体５０Ｂには、図７に示すように、揺動中心に対し移動方向後下側（換言すれば揺動方向後下側）となる第１杆部片５５の下端部に、前記案内部材２の切欠部２ａの上案内部片２１に当接可能な移動鎖錠部５１Ｂが設けられ、揺動中心に対し移動方向前上側（換言すれば揺動方向前上側）となる第２杆部片５６の上端部に、固定プラグ３側に屈曲し、固定プラグ３に接続された可動プラグ６の前面と接触して鎖錠体５０Ｂの付勢ばね９Ａによる揺動を拘束する鎖錠解除部５２Ｂ及び接続保持部５３Ｂが設けられ、揺動中心に対し移動方向前下側（換言すれば揺動方向前下側）となる第２杆部片５６の下端部に、前記案内部材２の上案内部片２１の上面と接触可能な揺動拘束部５４Ｂが設けられている。
【００４７】
以上の如く構成された実施の形態３の引出式開閉機器Ｃは、案内部材２に沿って試験位置に引き出された開閉機器Ｃの固定プラグ３に可動プラグ６を接続することなく開閉機器Ｃを運転位置に移動させようとする場合、鎖錠体５０Ｂは付勢ばね９Ａにより図７の位置、即ち、移動鎖錠部５１Ｂが前記案内部材２の切欠部２ａ内に入る位置に付勢保持されている状態であるから、その移動鎖錠部５１Ｂが案内部材２の切欠部２ａの上案内部片２１に当接し、開閉機器Ｃの移動は拘束される（鎖錠）。
【００４８】
また、試験位置に引出されている開閉機器Ｃの固定プラグ３に可動プラグ６を接続する場合、鎖錠体５０Ｂを付勢ばね９Ａに抗して反時計方向に揺動させることにより、接続保持部５３Ｂを可動プラグ６の接続経路から後退させることができる。従って、可動プラグ６を固定プラグ３に容易に接続することができる。尚、鎖錠体５０Ｂを付勢ばね９Ａに抗して図７の反時計方向に揺動させる場合、案内部材２の一端部には、前記切欠部２ａが設けられていて、前記揺動拘束部５４Ｂが案内部材２と干渉しないようにしているため、鎖錠体５０Ｂは上述のように揺動させることができる。
【００４９】
この可動プラグ６の接続後、鎖錠体５０Ｂは付勢ばね９Ａの力で揺動し、鎖錠解除部５２Ｂ及び接続保持部５３Ｂが可動プラグ６の前面に接触して鎖錠体５０Ｂの付勢ばね９Ａによる揺動が拘束され、該鎖錠体５０Ｂの移動鎖錠部５１Ｂが案内部材２に対し上側に位置する状態となる。従って、移動鎖錠部５１Ｂが案内部材２の切欠部２ａの上案内部片２１に当接するのを防止することができ、開閉機器Ｃを案内部材２に沿って移動させることができる状態となる（接続検出、鎖錠解除）。
【００５０】
この場合、鎖錠解除部５２Ｂ及び接続保持部５３Ｂが可動プラグ６の前面と対向することになるから、可動プラグ６の引き抜きを防止することができ、固定プラグ６及び可動プラグ６の接続状態を保持することができる。
【００５１】
以上のように可動プラグ６を固定プラグ３に接続した場合、鎖錠体５０Ｂの付勢ばね９Ａによる揺動を拘束して鎖錠解除の状態にすることができるから、開閉機器Ｃを案内部材２に沿って試験位置から運転位置に移動させることができる。この開閉機器Ｃの移動に伴い、揺動拘束部５４Ｂが案内部材２の上案内部片２１の上面と接触して、鎖錠体５０Ｂの揺動が案内部材２により拘束されるから、固定プラグ３及び可動プラグ６の接続状態を確実に保持することができる。
【００５２】
尚、以上の実施の形態１〜３においては、引出形遮断器を用いてなる開閉機器Ｃについて説明したが、本願発明における開閉機器Ｃは、断路器等の開閉機器であってもよい。
【００５３】
【発明の効果】
第１発明に係る引出式開閉機器及び第４発明に係る鎖錠装置によれば、機器本体に揺動可能に支持される鎖錠体に、機器本体の移動を鎖錠する移動鎖錠部と、鎖錠体の揺動を拘束して鎖錠解除にする鎖錠解除部と、プラグの接続状態を保持する接続保持部と、鎖錠体の揺動を拘束する揺動拘束部とを設けているから、鎖錠装置の機能を損なうことなく、鎖錠装置の部品点数を少なくすることができる。従って、部品点数が多いことによる累積誤差及び故障率を少なくすることができ、しかも、製造及び組み付け等の作業を簡略化させることができ、コストを低減できる。
【００５４】
第２発明及び第３発明に係る引出式開閉機器によれば、鎖錠体を、板体の成形又は線材の曲げ加工により簡易に形成することができ、コストをより一層低減することができる。
【図面の簡単な説明】
【図１】本発明に係る開閉機器の一部を省略した側面図である。
【図２】本発明に係る開閉機器の一部を省略した正面図である。
【図３】本発明に係る開閉機器の作動状態を示す説明図である。
【図４】本発明に係る開閉機器の作動過程を示す説明図である。
【図５】本発明に係る開閉機器が内装される閉鎖配電盤を模式的に示す側面図である。
【図６】本発明に係る開閉機器の実施の形態２を示す一部を省略した側面図である。
【図７】本発明に係る開閉機器の実施の形態３を示す一部を省略した側面図である。
【図８】従来例を示す開閉機器の正面図である。
【図９】従来例を示す開閉機器の側面図である。
【図１０】従来例を示す接続プラグの近傍を示す部分拡大正面図である。
【図１１】図１０のＸ−Ｘ線断面図である。
【図１２】図１０の固定プラグに可動プラグを接続した状態の説明図である。
【図１３】図１２の開閉機器を移動させた状態の説明図である。
【図１４】固定プラグ及び可動プラグ部分のみの平面図である。
【図１５】プラグカバーの斜視図である。
【符号の説明】
２案内部材、３固定プラグ、４機器本体、５鎖錠装置、６可動プラグ、５０，５０Ａ，５０Ｂ鎖錠体、５１，５１Ａ，５１Ｂ移動鎖錠部、
５２，５２Ａ，５２Ｂ鎖錠解除部、５３，５３Ａ，５３Ｂ接続保持部、
５４，５４Ａ，５４Ｂ揺動拘束部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drawer-type opening / closing device mainly incorporated in a closed switchboard, and a locking device that is favorably used for the opening / closing device.
[0002]
[Prior art]
The closed switchboard is formed by dividing the interior of the outer box configured as a ground metal box by a partition made of ground metal or an insulating material to form a plurality of storage chambers. A branch-side conductor connected to the bus, a load-side conductor connected to a power transmission cable for power transmission to another electrical room, a load such as a load device, a switchgear using a circuit breaker that contacts and separates both conductors, It is configured to accommodate control equipment necessary for monitoring control.
[0003]
In such a closed switchboard, in order to prevent an electric shock accident of an inspection operator due to a residual voltage of the internal device, it is necessary to make the internal device non-voltage before the inspection in each internal inspection of the installation room. For this reason, for example, as described in JP-A-4-54807, the switchgear is operated from a test position along a guide member having a predetermined length disposed in a storage chamber for storing the switchgear. In the internal inspection, the opening / closing device is pulled out to the test position along the guide member, and the bus-side branch conductor and the load-side conductor are reliably disconnected.
[0004]
Next, this conventional pull-out type switchgear will be described with reference to FIGS. 8 to 15. FIG. 8 is a front view of the pull-out type switchgear, FIG. 9 is a side view, and FIG. 10 is a partially enlarged view showing the vicinity of the connection plug. FIG. 11 is a sectional view taken along the line XX of FIG. 10, FIG. 12 is an explanatory diagram of a state where a movable plug is connected to the fixed plug of FIG. 10, and FIG. 13 is an explanatory diagram of a state where an opening / closing device is moved. .
[0005]
The conventional drawer-type opening / closing device E is provided with an opening / closing circuit and a fixed plug F connected to the opening / closing circuit, and from the test position shown in FIG. ) And a locking device J that locks and locks the movement of the device main body H.
[0006]
The fixed plug F and the locking device J are provided in the lower right front portion of the device main body H, and the rear surface of the device main body H is in contact with the contacts Y and Y connected to the bus-side branch conductor and the load-side conductor. Contacts Z, Z that are detachably connected are provided. In addition, wheels K, K that can roll along the guide member G are provided at the front left and right lower portions of the device main body H.
[0007]
A movable plug L connected to the control device is detachably connected to the fixed plug F from the front side of the device main body H. Further, U-shaped plug hooks M are pivotally supported on the upper and lower surfaces of the fixed plug F, and restrain the movement of the movable plug L relative to the fixed plug F.
[0008]
The locking device J swings the hook-shaped locking body O, the plug cover P, and the locking body O that are swingably supported on the right side surface of the device main body H via one horizontal axis N. An urging spring Q that urges one direction is provided, and an unlocking bar R that is supported by a support fitting protruding from the device body H so as to be laterally movable.
[0009]
The lock release rod R is for releasing the lock by restraining the swing of the lock body O when the movable plug L is connected to the fixed plug F. The other end reaches the inside of the fixed plug F. The movable plug L is provided with a pressing portion S that can be engaged with the other end of the unlocking rod R.
[0010]
The locking body O is provided with a concave moving locking part O2 that locks the movement of the device main body H by engagement with one end d of the fixed strip D arranged in parallel with the guide member G. Yes.
[0011]
As shown in FIG. 15, the plug cover P is bent at the end opposite to the support to the device main body H, and holds the connection state of the fixed and movable plugs F and L, A swing restraining portion P2 for restraining the swing of the plug cover P when the device main body H is moved; an abutting portion P3 for abutting a projecting portion D1 projecting from one end of the fixed strip D; An arcuate guide hole P4 for receiving a guide pin T protruding from the device main body H is provided.
[0012]
When the movable plug L is connected to the fixed plug F of the open / close device E drawn out to the test position, the pull-out type open / close device E configured as described above pushes the lock release rod R, and the lock body O oscillates in the clockwise direction of FIG. 11 around the horizontal axis N against the biasing spring Q, resulting in the state of FIG. 12 (connection detection, unlocking).
[0013]
Next, when the opening / closing device E is moved along the guide member G to the operating position, the contact portion P3 of the plug cover P contacts the projection D1 of the fixed strip D as shown in FIG. The plug cover P swings about the horizontal axis N in the clockwise direction in FIG. Accordingly, during the movement from the test position to the operation position, the state shown in FIG. 13 is obtained, and the connection holding portion P1 of the plug cover P covers the front surface of the movable plug L, and the contact and separation of the movable plug L are restricted (contact and separation prevention). ).
[0014]
Further, in the test position, when the opening / closing device E is moved to the operation position without connecting the movable plug L, the locking body O is biased toward the fixed strip D as shown in FIG. Therefore, the movable locking part O2 comes into contact with one end d of the fixed strip D, and the movement of the opening / closing device E is restricted (locking).
[0015]
Further, when the movable plug L is connected to the fixed plug F of the device main body H drawn to the test position as described above, the plug hook M is moved clockwise from the position indicated by the broken line in FIG. 14 to the position indicated by the solid line. By rotating, the pin of the movable plug L can be taken into the engagement hole of the plug hook M and locked. After the movable plug L is locked by the plug hook M, when the opening / closing device E is moved toward the operation position, the operation part of the plug hook M is covered by the lock cover U in the range from the test position to the operation position immediately after the movement. It becomes difficult to operate the operation unit.
[0016]
[Problems to be solved by the invention]
However, as described above, the lock device J of the pull-out type opening / closing device E has a structure including the lock body O, the plug cover P, and the lock release rod R, and thus has a large number of parts. Therefore, there has been a problem that processing and assembly workability are poor and the cost is high.
[0017]
The present invention has been made in view of such circumstances, and includes a lock body that is swingably supported by an apparatus body, a movable lock section, a lock release section, a connection holding section, and a swing restraint. By providing a part, the number of parts of the locking device can be reduced without impairing the function of the locking device, the workability and assembly workability can be improved, and the drawer type can be configured at low cost An object is to provide an opening / closing device and a locking device thereof.
[0018]
[Means for Solving the Problems]
The drawer-type opening / closing device according to the first invention is provided with a fixed plug to which a movable plug is detachably connected and an opening / closing circuit to be connected to the fixed plug, and is capable of being pulled out along a predetermined guide member. And a locking device for locking the device main body, the locking device being attached to the device main body. Using one oscillation center as a fulcrum Supported so that it can swing And biased in one direction of swinging by a biasing spring A lock body, and the lock body Is on one side of the swing direction with respect to the swing center, To the fixed plug Connected Movable plug By engagement with Of the lock Swing direction to one side An unlocking portion for restraining the swing and releasing the locking; a connection holding portion for holding a connection state of the fixed and movable plug; and the device main body. Along the guide member When moved, the lock Swing direction to the other A rocking restraint that restrains rocking, and And a movable locking part that locks and locks the movement of the device main body by engaging with the guide member on the other side of the rocking direction with respect to the rocking center. The movable lock portion is in the non-engagement position at the position where the lock release portion is engaged with the movable plug, and the movable lock portion is in the engagement position at the position where the movable plug is not connected. , And is configured to swing about the swing center as a fulcrum according to whether or not the movable plug is connected. It is characterized by that.
[0019]
The drawer-type opening / closing device according to the second invention is characterized in that the locking body is formed by a single plate.
[0020]
The drawer type opening / closing device according to a third aspect of the invention is characterized in that the lock body is formed of a single wire.
[0021]
According to a fourth aspect of the present invention, there is provided a locking device for a pull-out type opening / closing device, provided with a fixed plug to which a movable plug is detachably connected and an open / close circuit connected to the fixed plug, and is capable of being pulled out along a predetermined guide member. A locking device that is attached to a possible drawer-type opening / closing device and locks the opening / closing device is provided in the opening / closing device. Using one oscillation center as a fulcrum Supported so that it can swing And biased in one direction of swinging by a biasing spring Lock the body Use The lock Is on one side of the swing direction with respect to the swing center, To the fixed plug Connected Movable plug By engagement with Of the lock Swing direction to one side An unlocking portion for restraining the swing and releasing the locking; a connection holding portion for holding a connection state of the fixed and movable plug; and the device main body. Along the guide member When moved, the lock Swing direction to the other A rocking restraint that restrains rocking, and And a movable locking part that locks and locks the movement of the device main body by engaging with the guide member on the other side of the rocking direction with respect to the rocking center. The movable lock portion is in the non-engagement position at the position where the lock release portion is engaged with the movable plug, and the movable lock portion is in the engagement position at the position where the movable plug is not connected. , And is configured to swing about the swing center as a fulcrum according to whether or not the movable plug is connected. It is characterized by that.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof. 1 is a side view in which a part of the switchgear is omitted, FIG. 2 is a front view in which a part of the switchgear is omitted, FIG. 3 is an explanatory diagram showing an operating state, FIG. 4 is an explanatory diagram showing an operating process, FIG. FIG. 2 is a side view schematically showing a closed switchboard in which an opening / closing device is installed.
[0023]
As shown in FIG. 5, the closed switchboard has a rectangular box-shaped metal outer box 1 in which a bus bar room 1a, a cable room 1b, a switchgear room 1c, and a partition wall made of ground metal or insulating material. The control room is partitioned into a control equipment room 1d, a bus side branch conductor A is provided in the bus room 1a, a load side conductor B is provided in the cable room 1b, and the opening / closing equipment C is moved in the opening / closing equipment room 1c. A control device (not shown) is stored in the control device room 1d.
[0024]
In the switchgear room 1c, a pair of guide members 2, 2 for guiding the switchgear C so as to be movable from the test position to the operating position are disposed in the lateral direction at a predetermined interval. The guide members 2 and 2 include an upper guide portion piece 21 and a lower guide portion piece 22 that are opposed to each other at a predetermined interval in the vertical direction, and a connecting piece 23 that connects the upper guide portion piece 21 and the lower guide portion piece 22. Is formed in a U-shaped cross section. At one end in the length direction of the right guide member 2, the upper guide piece 21 and the connecting piece 23 are cut out, and a cutout portion 2a is provided.
[0025]
The switching device C includes a device body 4 provided with a switching circuit and a fixing plug 3 connected to the switching circuit, and a locking device that locks the device body 4 by restricting movement of the device body 4 from the test position to the operation position. And 5.
[0026]
A movable plug 6 connected to the control device is detachably connected to the fixed plug 3 from the front side of the device body 4. In addition, U-shaped plug hooks 31 are rotatably mounted on the upper and lower surfaces of the fixed plug 3 so that the movement of the movable plug 6 relative to the fixed plug 3 can be restricted.
[0027]
The fixed plug 3 and the locking device 5 are provided in the lower right front portion of the device body 4, and wheels 7, 7 that can roll along the guide members 2, 2 are provided in the lower left and right front portions. These wheels 7 and 7 make the device body 4 movable.
[0028]
The locking device 5 is swingably supported via a vertical support shaft 8 installed between a pair of support pieces 4a and 4a facing the right side surface of the device body 4 vertically and spaced apart from each other. One lock tablet 50 is used. This lock 50 is As one rocking center The coiled biasing spring 9 wound around the support shaft 8 is biased clockwise in FIG.
[0029]
1 to 4 is formed by a single plate body, and a pair of bent pieces 5a and 5a project from the upper and lower ends of the central portion in the front-rear direction. The support shaft 8 is inserted into the through holes formed in the bent pieces 5a and 5a.
[0030]
As shown in FIG. 1, the locking body 50 using a plate body has a rear lower end portion in the moving direction with respect to the swing center. (In other words, the lower end at the back of the swinging direction) Further, a movable locking part 51 that protrudes downward from the support position and is capable of coming into contact with the upper guide part piece 21 of the notch part 2a of the guide member 2 is provided. (In other words, the upper front end of the swing direction) Further, it protrudes above the support position and comes into contact with one side surface of the movable plug 6 connected to the fixed plug 3 by the biasing spring 9 of the locking body 50. Swing direction to one side An unlocking portion 52 for restraining the swing and a connection holding portion 53 bent from the front end of the unlocking portion 52 toward the fixed plug 3 are provided, and the front lower end in the moving direction with respect to the swing center (In other words, the front lower end of the swing direction) Further, a swinging restraining portion 54 that protrudes downward from the support position and can contact the tip edge 21a of the upper guide portion piece 21 of the guide member 2 is provided.
[0031]
The pull-out type opening / closing device C configured as described above moves the opening / closing device C to the operating position without connecting the movable plug 6 to the fixed plug 3 of the device body 4 pulled out along the guide member 2 to the test position. In this case, since the locking body 50 is urged toward the guide member 2 by the urging spring 9 as shown in FIG. 4A, the movable locking portion 51 is notched in the guide member 2. The movement of the opening / closing device C is restricted (locked) by coming into contact with the upper guide piece 21 of the portion 2a.
[0032]
When the movable plug 6 is connected to the fixed plug 3 of the opening / closing device C drawn to the test position, the locking body 50 is counterclockwise against the biasing spring 9 as shown in FIG. By swinging, the connection holding portion 53 can be retracted from the connection path of the movable plug 6. Therefore, the movable plug 6 can be easily connected to the fixed plug 3. When the locking body 50 is swung counterclockwise in FIG. 4B against the biasing spring 9, the notch 2a is provided at one end of the guide member 2, Since the rocking restraint part 54 does not interfere with the guide member 2, the lock body 50 can be rocked as described above.
[0033]
After the movable plug 6 is connected, the lock body 50 is swung clockwise in FIG. 4B by the force of the biasing spring 9, and the lock release portion 52 is moved as shown in FIG. 4C. The locking member 50 comes into contact with one side surface and is restrained from swinging by the biasing spring 9, so that the locking member 50 is parallel to the guide member 2. Therefore, the movable locking part 51 can be prevented from coming into contact with the upper guide part piece 21 of the notch part 2 a of the guide member 2, and the apparatus book 4 can be moved along the guide member 2. (Connection detection, unlocking).
[0034]
In this case, as shown in FIG. 4C, since the connection holding portion 53 enters the connection path of the movable plug 6 and faces the front surface of the movable plug 6, the movable plug can be prevented from being pulled out and fixed. The connection state of the plug 3 and the movable plug 6 can be maintained.
[0035]
When the movable plug 6 is connected to the fixed plug 3 as described above, the swinging of the locking body 50 by the urging spring 9 can be restricted and the locking can be released. It can be moved along the members 2 and 2 from the test position to the operating position. As the opening / closing device C moves, the swing restraint portion 54 comes into contact with the distal end edge 21a of the upper guide portion piece 21 of the guide member 2, and the swing of the lock body 50 is restrained by the guide member 2. The connection state of the fixed plug 3 and the movable plug 6 can be reliably maintained.
[0036]
Embodiment 2. FIG.
Next, the second embodiment shown in FIG. 6 will be described.
In the second embodiment, instead of supporting the lock 50 through the vertical support shaft 8 as in the first embodiment, the horizontal support shaft 8A as shown in FIG. Since the basic configuration is the same as that of the first embodiment, the drawings and detailed description of common points are omitted.
[0037]
The second embodiment shown in FIG. 6 uses a single locking body 50A that is swingably supported via a support shaft 8A that protrudes laterally on the right side surface of the device body 4. The lock body 50A is formed of a single substantially triangular plate body, and the support shaft 8A is inserted into a through-hole formed in the middle of the upper and lower sides of the lock body 50A. A biasing spring 9A is interposed between the two.
[0038]
As shown in FIG. 6, the locking body 50 </ b> A using the plate body has a rear lower end portion in the movement direction with respect to the swing center. (In other words, the lower end at the back of the swinging direction) In addition, a movable locking part 51A capable of contacting the upper guide part 21 of the notch part 2a of the guide member 2 is provided, and the front upper end part in the movement direction with respect to the swing center (In other words, the upper front end of the swing direction) In addition, the lock releasing portion 52A and the connection holding portion that are bent toward the fixed plug 3 and that come into contact with the front surface of the movable plug 6 connected to the fixed plug 3 to restrain the lock body 50A from swinging by the biasing spring 9A. 53A is provided, and the front lower end in the moving direction with respect to the swing center (In other words, the front lower end of the swing direction) Further, a swing restraining portion 54A that can come into contact with the upper surface of the upper guide portion piece 21 of the guide member 2 is provided.
[0039]
The pull-out type opening / closing device C according to the second embodiment configured as described above is configured to connect the opening / closing device C without connecting the movable plug 6 to the fixed plug 3 of the opening / closing device C drawn to the test position along the guide member 2. When moving to the operating position, the locking body 50A is biased and held by the biasing spring 9A at the position shown in FIG. 6, ie, the position where the moving locking part 51A enters the notch 2a of the guide member 2. Therefore, the movable locking part 51A comes into contact with the upper guide part 21 of the notch part 2a of the guide member 2, and the movement of the opening / closing device is restricted (locking).
[0040]
Further, when the movable plug 6 is connected to the fixed plug 3 of the open / close device that is drawn out to the test position, the connection holding portion is formed by swinging the locking body 50A counterclockwise against the biasing spring 9A. 53A can be retracted from the connection path of the movable plug 6. Therefore, the movable plug 6 can be easily connected to the fixed plug 3. When the locking body 50A is swung counterclockwise in FIG. 6 against the biasing spring 9A, the notch 2a is provided at one end of the guide member 2, and the rocking restraint Since the portion 54A does not interfere with the guide member 2, the lock body 50A can be swung as described above.
[0041]
After the movable plug 6 is connected, the lock body 50A is swung by the force of the biasing spring 9A, and the lock release portion 52A and the connection holding portion 53A come into contact with the front surface of the movable plug 6 to attach the lock body 50A. Oscillation by the force spring 9A is restricted, and the lower end of the locking body 50A is parallel to the guide member 2. Accordingly, it is possible to prevent the movable locking part 51A from coming into contact with the upper guide part piece 21 of the notch part 2a of the guide member 2, and the opening / closing device C can be moved along the guide member 2. (Connection detection, unlocking).
[0042]
In this case, since the unlocking portion 52A and the connection holding portion 53A face the front surface of the movable plug 6, the movable plug 6 can be prevented from being pulled out, and the connection state between the fixed plug 3 and the movable plug 6 can be prevented. Can be held.
[0043]
When the movable plug 6 is connected to the fixed plug 3 as described above, the lock by the urging spring 9A of the lock body 50A can be restrained and the lock can be released. The test position can be moved along the member 2 from the test position. As the opening / closing device C moves, the swing restraint portion 54A comes into contact with the upper surface of the upper guide portion piece 21 of the guide member 2, and the swing of the lock body 50A is restrained by the guide member 2. 3 and the movable plug 6 can be reliably held in the connected state.
[0044]
Embodiment 3 FIG.
Next, the third embodiment shown in FIG. 7 will be described.
In this third embodiment, instead of forming the lock body 50A supported swingably on the device body 4 via the lateral support shaft 8A by a single plate as in the second embodiment, Since it is formed by bending a single wire as shown in FIG. 7, the basic configuration is the same as in the first and second embodiments, and therefore, drawings and detailed descriptions of common points are omitted.
[0045]
The third embodiment shown in FIG. 7 uses a single lock body 50B that is swingably supported via a support shaft 8A that protrudes laterally on the right side surface of the device body 4. The locking body 50B extends in the vertical direction, and includes a first hook part 55 and a second hook part piece 56 that are arranged in the front-rear direction, and an upper end of the first hook part piece 55 and a second hook part piece 56. A connecting hook part 57 that connects the lower ends, a support piece 58 is provided in the middle of the connecting hook part 57, and the support shaft 8A is inserted into a through hole formed in the support piece 58. The biasing spring 9 </ b> A is interposed between the connecting collar piece 57 and the device main body 4.
[0046]
As shown in FIG. 7, the locking body 50B using the wire rod has a rear lower side in the movement direction with respect to the swing center. (In other words, the lower back of the swing direction) At the lower end of the first collar piece 55, there is provided a movable locking part 51B that can come into contact with the upper guide part 21 of the notch part 2a of the guide member 2, and the upper front side in the movement direction with respect to the swing center (In other words, the upper side in the swing direction) At the upper end of the second flange piece 56, which is bent, it is bent toward the fixed plug 3 and comes into contact with the front surface of the movable plug 6 connected to the fixed plug 3, and the rocking body 50B is swung by the biasing spring 9A. A lock releasing part 52B and a connection holding part 53B for restraining are provided, and the front lower side in the moving direction with respect to the swing center (In other words, the front lower side of the swing direction) At the lower end portion of the second flange portion piece 56, a swing restraint portion 54B that can contact the upper surface of the upper guide portion piece 21 of the guide member 2 is provided.
[0047]
The pull-out type opening / closing device C according to the third embodiment configured as described above can connect the opening / closing device C without connecting the movable plug 6 to the fixed plug 3 of the opening / closing device C drawn to the test position along the guide member 2. When moving to the operating position, the locking body 50B is biased and held by the biasing spring 9A at the position shown in FIG. 7, that is, the position where the moving locking part 51B enters the notch 2a of the guide member 2. Therefore, the movable locking part 51B abuts on the upper guide part 21 of the notch part 2a of the guide member 2, and the movement of the opening / closing device C is restricted (locking).
[0048]
When the movable plug 6 is connected to the fixed plug 3 of the opening / closing device C drawn to the test position, the connection is maintained by swinging the locking body 50B counterclockwise against the biasing spring 9A. The portion 53B can be retracted from the connection path of the movable plug 6. Therefore, the movable plug 6 can be easily connected to the fixed plug 3. When the locking body 50B is swung counterclockwise in FIG. 7 against the biasing spring 9A, the notch 2a is provided at one end of the guide member 2, and the rocking restraint Since the portion 54B does not interfere with the guide member 2, the lock body 50B can be swung as described above.
[0049]
After the movable plug 6 is connected, the lock body 50B is swung by the force of the biasing spring 9A, and the lock release part 52B and the connection holding part 53B come into contact with the front surface of the movable plug 6 to attach the lock body 50B. Oscillation by the biasing spring 9A is restrained, and the movable locking part 51B of the locking body 50B is positioned on the upper side with respect to the guide member 2. Therefore, the movable locking part 51B can be prevented from coming into contact with the upper guide part piece 21 of the notch part 2a of the guide member 2, and the opening / closing device C can be moved along the guide member 2. (Connection detection, unlocking).
[0050]
In this case, since the unlocking portion 52B and the connection holding portion 53B are opposed to the front surface of the movable plug 6, the movable plug 6 can be prevented from being pulled out, and the connection state of the fixed plug 6 and the movable plug 6 can be determined. Can be held.
[0051]
When the movable plug 6 is connected to the fixed plug 3 as described above, the swinging of the locking body 50B by the urging spring 9A can be restrained and the unlocking state can be released. 2 can be moved from the test position to the operating position. As the opening / closing device C moves, the swing restraint portion 54B comes into contact with the upper surface of the upper guide portion piece 21 of the guide member 2, and the swing of the lock body 50B is restrained by the guide member 2. 3 and the movable plug 6 can be reliably held in the connected state.
[0052]
In the above first to third embodiments, the switchgear C using the drawer type circuit breaker has been described. However, the switchgear C in the present invention may be a switchgear such as a disconnector.
[0053]
【The invention's effect】
According to the drawer-type opening / closing device according to the first invention and the locking device according to the fourth invention, the movable locking portion that locks the movement of the device main body on the lock body that is swingably supported by the device main body; , Provided with a lock releasing part for restricting the swing of the lock body to release the lock, a connection holding part for holding the connection state of the plug, and a swing restricting part for restricting the swing of the lock body Therefore, the number of parts of the locking device can be reduced without impairing the function of the locking device. Therefore, the cumulative error and failure rate due to the large number of parts can be reduced, and the operations such as manufacturing and assembly can be simplified and the cost can be reduced.
[0054]
According to the drawer-type opening / closing device according to the second and third inventions, the lock body can be easily formed by molding the plate body or bending the wire, and the cost can be further reduced.
[Brief description of the drawings]
FIG. 1 is a side view in which a part of a switchgear according to the present invention is omitted.
FIG. 2 is a front view in which a part of the switchgear according to the present invention is omitted.
FIG. 3 is an explanatory view showing an operating state of the switchgear according to the present invention.
FIG. 4 is an explanatory diagram showing an operation process of the switchgear according to the present invention.
FIG. 5 is a side view schematically showing a closed switchboard in which the switchgear according to the present invention is installed.
FIG. 6 is a side view in which a part of Embodiment 2 of the switchgear according to the present invention is omitted.
FIG. 7 is a side view in which a part of Embodiment 3 of the switchgear according to the present invention is omitted.
FIG. 8 is a front view of a switchgear showing a conventional example.
FIG. 9 is a side view of a switchgear showing a conventional example.
FIG. 10 is a partially enlarged front view showing the vicinity of a connection plug according to a conventional example.
11 is a cross-sectional view taken along line XX in FIG.
12 is an explanatory diagram of a state in which a movable plug is connected to the fixed plug of FIG.
13 is an explanatory diagram of a state in which the opening / closing device of FIG. 12 is moved.
FIG. 14 is a plan view of only a fixed plug and a movable plug portion.
FIG. 15 is a perspective view of a plug cover.
[Explanation of symbols]
2 guide member, 3 fixed plug, 4 device body, 5 locking device, 6 movable plug, 50, 50A, 50B locking body, 51, 51A, 51B movable locking part,
52, 52A, 52B unlocking part, 53, 53A, 53B connection holding part,
54, 54A, 54B Oscillating restraint part.

Claims

An apparatus main body provided with a fixed plug to which the movable plug is detachably connected and an open / close circuit connected to the fixed plug, and capable of being pulled out and moved along a predetermined guide member, and a lock for locking the apparatus main body and a device, the chain locking device, the swingably supported one swing center as a fulcrum to the device body, with a locking member that will be energized one in the swinging direction by and the biasing spring The locking body is oscillated in one oscillating direction of the locking body on one side in the oscillating direction with respect to the oscillating center by engagement with a movable plug connected to the fixed plug. When the device main body moves along the guide member, the lock release portion that restrains and releases the lock, the connection holding portion that holds the connection state of the fixed and movable plugs, and the lock body is shaken. the swinging of the moving direction other has a rocking restraining portion that restrains the swing On the other side of the swinging direction with respect to the heart, there is a moving locking part that locks the apparatus main body by restraining movement by engagement with the guide member, and the locking plug is connected to the connected movable plug. In the position where the release part is engaged, the moving lock part is in the non-engaged position, and in the position where the movable plug is not connected, the movable lock part is in the engaged position, and whether the movable plug is connected or not Accordingly , the drawer type opening and closing device is configured to swing about the swing center as a fulcrum .

The drawer-type opening / closing device according to claim 1, wherein the lock body is formed of a single plate.

The drawer-type opening / closing device according to claim 1, wherein the lock body is formed of a single wire.

A fixed plug to which the movable plug is detachably connected and an open / close circuit to be connected to the fixed plug are provided, and the open / close device is attached to a drawer-type open / close device that can be moved along a predetermined guide member. locking to locking device, the swingably supported one swing center as a fulcrum to open and close device made using a locking member that will be energized one in the swinging direction by and the biasing spring, the The lock body is constrained from swinging in one of the swing directions of the lock body by engagement with a movable plug connected to the fixed plug on one side of the swing direction with respect to the swing center. A lock releasing portion for releasing the lock, a connection holding portion for holding the connection state of the fixed and movable plugs, and the other of the swinging direction of the lock body when the device main body moves along the guide member It has a rocking restraining portion for restraining the swinging of the said pivot center On the other side of the swinging direction, it has a moving locking part that locks and locks the movement of the device main body by engaging with the guide member, and the unlocking part is connected to the connected movable plug. The movable lock portion is in the non-engagement position at the position where the movable plug is engaged, and the movable lock portion is in the engagement position at the position where the movable plug is not connected, depending on whether the movable plug is connected or not. A lock device for a drawer-type opening / closing device, characterized in that it swings about the swing center as a fulcrum .