JP4346279B2

JP4346279B2 - Insulation structure and bus duct branch unit and connection unit

Info

Publication number: JP4346279B2
Application number: JP2002103160A
Authority: JP
Inventors: 茂鷲崎
Original assignee: Kyodo Ky Tec Corp
Current assignee: Kyodo Ky Tec Corp
Priority date: 2002-04-05
Filing date: 2002-04-05
Publication date: 2009-10-21
Anticipated expiration: 2022-04-05
Also published as: JP2003299233A

Description

【０００１】
【発明の属する技術分野】
本発明は、主としてバスダクトの異相導体間を絶縁する絶縁構造及びその絶縁構造を有するバスダクトの分岐ユニット並びに接続ユニットに関する。
【０００２】
【従来の技術】
従来、バスダクトの異相導体間を絶縁する絶縁構造に関連する技術として、実公昭４４−２２２８９号のバスダクト接続部がある。前記バスダクト接続部は、外周に絶縁被覆を施したブスバーをダクト内に並設してなる絶縁バスダクトにおいて、一面に角柱状突起が突設され、他面に前記突起に対応しうる凹溝が刻設され、かつ前記突起及び凹溝を貫通する挿通孔が透設されてなる絶縁隔壁板の数枚を夫々の突起を順次隣接する凹溝に嵌め込ませて重ね合わせ、前記挿通孔に絶縁筒を嵌入させて一体にし、更にこれらの外周面にばね板及びこれを押圧する間隔片を嵌入固持させ、この一体を、ダクトの両側面に対向させて設けた透孔間に配置させ端部に嵌合溝を刻設され、かつその近傍の絶縁被膜を剥離した各ブスバーの前記嵌合溝に前記絶縁隔壁版の突起を嵌合させ、これに接続すべく対応するブスバーも同様に前記突起に嵌合係止させてブスバーの各層を重ね合わせに接合し、前記絶縁筒には前記間隔片に螺合固着される押圧片を介してボルトを嵌挿し、ナットにより締め付けてなるものである。
【０００３】
また、実開昭５３−５０４９７号には、軸線方向に互いに連結されるように成形したリブ付絶縁スペーサをブスバー間或いはブスバーとアース間に介在させてブスバーの保持を行うようにしたことを特徴とするブスバー支持装置が開示されている。
【０００４】
【発明が解決しようとする課題】
しかしながら、上記実公昭４４−２２２８９号に開示の技術は、ブスバーの各相間の長い沿面距離を確保し、より大なる耐電強度が得られる効果があるものの、ブスバーから角柱状突起及び凹溝が形成された絶縁隔壁板を介してボルトへと至るブスバーとボルト間の沿面距離が短くなることから、絶縁隔壁板に形成されたボルト挿通孔にボルトを挿通する場合には、前記ボルト挿通孔に絶縁筒を嵌入させ、この絶縁筒にボルトを挿通しなければならない。即ち、前記ボルト挿通孔に絶縁筒を嵌入することが必須であり、絶縁筒という部品を準備することが必要となる。かかる部品点数の多さは、在庫管理・製造・施工の各面でコストアップになると共に作業を煩雑化する。更には、３線式のバスダクト接続部、２線式のバスダクト接続部、或いは４線式のバスダクト接続部等に対応するためには、前記各バスダクト接続部毎等にそれぞれ異なる長さの多様な絶縁筒が必要となるから、前記在庫管理、製造などの面に於けるコストアップ及び作業の繁雑性は一層顕著なものとなる。
【０００５】
更に、実公昭４４−２２２８９号の技術は、一方の絶縁隔壁板とバスダクト側板との間に突起が介在し、他方の絶縁隔壁板とバスダクト側板との間に突起が存在せず、余分な間隔片及び押圧片が必要になる点等から、一層のコストアップを招来すると共に、前記間隔片及び押圧片が介在することにより、接続部の幅が増加して接続部が大型化してしまうという不具合を生ずる。
【０００６】
また、上記実開昭５３−５０４９７号に開示の技術も、リブ付絶縁スペーサを絶縁チューブを被せたボルトで締付け、ブスバー間に介在するリブ付絶縁スペーサでブスバーを支持する構成であり、絶縁チューブという余分な部品を必要とすることから、上記と同様にコストアップ及び作業の繁雑性を招来するという不具合を生ずる。更に、ブスバーを支持する支持装置で、実施例記載のように空気絶縁型バスダクトに使用されることが考えられるが、本技術を密着絶縁型バスダクトの接続部などに使用する場合は、上記同様にリブが存在するため、大型化するという不具合を生ずる。
【０００７】
本発明は上記不具合を解消するために提案するものであって、良好な絶縁性を発揮することができると共に、部品点数を低減し、コストダウン及び作業の簡略化を図ることができる絶縁構造及びバスダクトの分岐ユニット並びにバスダクトの接続ユニット等を提供することを目的とする。
【０００８】
また、本発明の他の目的は、例えば密着絶縁型バスダクトの接続部等に使用する場合にも、バスダクトの分岐部や接続部等の幅を極力狭くし、小型化を図ることができる絶縁構造及びバスダクトの分岐ユニット並びにバスダクトの接続ユニット等を提供することにある。
【０００９】
【課題を解決するための手段】
本発明の絶縁構造は、筒状の第１突出部が一面から外方に突設されている略平板状の第１絶縁板と、該第１突出部内に挿入可能で且つ内部に突出方向へボルト挿通孔が穿設された第２突出部が一面から外方に突設されている略平板状の第２絶縁板を有し、該第１突出部と該第２突出部を対向配置して、該第１突出部内に該第２突出部を挿入若しくは嵌入することにより、該第１突出部と該第２突出部で絶縁スリーブを構成し、少なくとも、該挿入状態若しくは嵌入状態で該第１絶縁板と該第２絶縁板間に配置される導体と、該第１絶縁板の外方若しくは該第２絶縁板の外方若しくはその両者に配置される導体とを絶縁可能であることを特徴とする。例えば一面から外方に突出する筒状の第１突出部を有する第１絶縁板と、一面から外方に突出し、前記第１突出部の内形と略相似形で僅かに小さい外形を有し、且つ内部にボルト挿通孔が穿設された第２突出部を有する第２絶縁板を、第１突出部内に第２突出部を挿入若しくは嵌入して配置すると共に、挿入状態若しくは嵌入状態の第１突起部と第２突起部により絶縁スリーブを形成して、前記絶縁スリーブにボルトを挿通して絶縁構造とし、前記第１絶縁板と第２絶縁板間に導体の少なくとも一部が介在させ、少なくとも異相導体間を絶縁する。
【００１０】
また、本発明の絶縁構造は、凸部が一面から外方に突設されている略平板状の第１絶縁板と、該第１絶縁板の凸部を挿入若しくは嵌入可能な凹部が一面に設けられている略平板状の第２絶縁板を有し、該凸部の該凹部への挿入若しくは嵌入により該第１絶縁板と該第２絶縁板を相互に回り止めして一体化して設け、少なくとも、該挿入若しくは嵌入状態で一体化された該第１絶縁板及び該第２絶縁板の両外側に配置される導体を絶縁可能であることを特徴とする。例えば一面から外方に突出する凸部を有する第１絶縁板と、一面に前記第１絶縁板の凸部が挿入若しくは嵌入可能な凹部を有する第２絶縁板とを、凸部と凹部を挿入若しくは嵌入状態で配置し、第１絶縁板と第２絶縁板を回り止めして絶縁構造とし、異相導体の少なくとも一部の間に前記第１絶縁板及び第２絶縁板を介在させ、少なくとも異相導体間を絶縁する絶縁構造とする。また、より好適には、略中央部に開口部が形成され、該開口部を中心として該開口部の外周に非円形枠状の凸部及び凹部が一面に設けられている略平板状の第１絶縁板と、該第１絶縁板の非円形枠状の凸部及び凹部が挿入若しくは嵌入可能な非円形枠状の凹部及び凸部が一面に設けられている略平板状の第２絶縁板とを有し、該第１絶縁板の非円形枠状の凸部及び凹部と、該第２絶縁板の非円形枠状の凹部及び凸部とを相互に挿入若しくは嵌入することにより、該第１絶縁板と該第２絶縁板とを相互に回り止めして一体化して設け、少なくとも、該挿入若しくは嵌入状態で一体化された該第１絶縁板及び該第２絶縁板の両外側に配置される導体を絶縁可能であることを特徴とする絶縁構造とすると良い。
【００１１】
また、本発明の絶縁構造は、筒状の第１突出部が一面から外方に突設され、凸部が他面から外方に突設され若しくは凹部が他面に設けられている略平板状の第１絶縁板と、該第１突出部内に挿入可能で且つ内部に突出方向へボルト挿通孔が穿設された第２突出部が一面から外方に突設され、該第１絶縁板の凸部を挿入若しくは嵌入可能な凹部が他面に設けられ若しくは該第１絶縁板の凹部に挿入若しくは嵌入可能な凸部が他面から外方に突設されている略平板状の第２絶縁板を有し、一の第１絶縁板の第１突出部と一の第２絶縁板の第２突出部を対向配置して、該一の第１絶縁板の第１突出部内に該一の第２絶縁板の第２突出部を挿入若しくは嵌入することにより、該第１突出部と該第２突出部で絶縁スリーブを構成すると共に、該凸部の該凹部への挿入若しくは嵌入により該一の第１絶縁板と他の第２絶縁板若しくは該一の第２絶縁板と他の第１絶縁板を相互に回り止めして一体化して設け、少なくとも、該挿入状態若しくは嵌入状態で該一の第１絶縁板と該一の第２絶縁板間に配置される導体と、該一の第１絶縁板の外方若しくは該一の第２絶縁板の外方若しくはその両者に配置される導体とを絶縁可能であることを特徴とする。
【００１２】
例えば、一面から外方に突出する筒状の第１突出部と、他面から外方に突出する凸部若しくは凹部の少なくとも一方を有する第１絶縁板と、一面から外方に突出し、第１突出部の内形と略相似形で僅かに小さい外形を有し、且つ内部にボルト挿通孔が穿設された第２突出部と、他面に前記第１絶縁板の凸部若しくは凹部が挿入若しくは嵌入可能な凹部若しくは凸部を有する第２絶縁板を有し、異相導体の少なくとも一部の間に介在する第１絶縁板と第２絶縁板を凸部と凹部を挿入若しくは嵌入した状態で配置し、その間に導体の少なくとも一部が介在する第１絶縁板と他の第２絶縁板を第１突出部内に第２突出部を挿入若しくは嵌入した状態で配置して、第１突出部と第２突出部で絶縁スリーブを形成し、第１絶縁板と第２絶縁板と他の第２絶縁板とを回り止めする絶縁構造とし、少なくとも異相導体間を絶縁する。
【００１３】
また、本発明の絶縁構造は、前記第２絶縁板若しくは前記一の第２絶縁板の第２突出部の外周から所定距離離れた位置に突条を形成して、該第２突出部と該突条との間に溝を形成し、前記第１絶縁板若しくは前記一の第１絶縁板の第１突出部の先端部を該溝に挿入若しくは嵌入することにより、前記絶縁スリーブを構成することを特徴とする。また、本発明の絶縁構造は、前記第１絶縁板の他面に、前記第１突出部の前記第２突出部が挿入若しくは嵌入される開口部を中心にして該開口部の外周に非円形枠状の凸部及び凹部を設け、前記第２絶縁板の他面に、前記第２突出部のボルト挿通孔を中心にして該ボルト挿通孔の外周に非円形枠状の凹部及び凸部を設け、前記第１絶縁板の非円形枠状の凸部及び凹部と、前記第２絶縁板の非円形枠状の凹部及び凸部とを相互に挿入若しくは嵌入して、前記第１絶縁板と前記第２絶縁板とを相互に回り止めして一体化することを特徴とする。更に、本発明の絶縁構造は、前記第１突出部の断面形状の内形、換言すれば前記第１突出部の前記第２突出部が挿入若しくは嵌入される開口部の形状、及び前記第２突出部の断面形状の外形が非円形であることを特徴とする。又、第１絶縁板若しくは第２絶縁板に設けられている凸部の断面形状若しくは凹部の断面形状を非円形とすると好適である。
【００１４】
更に、本発明の絶縁構造は、第１絶縁板若しくは第２絶縁板に設けられている凸部若しくは凹部が一面若しくは他面に対して複数設けられていることを特徴とする。換言すれば、互いに嵌入可能な前記凸部及び前記凹部が複数組設けられる構成とする。
【００１５】
また、本発明のバスダクトに関するユニットは、本発明の絶縁構造で異相導体間を絶縁し、バスダクトの分岐若しくは接続を行うことを特徴とする。即ち、本発明のバスダクトの分岐ユニットは、本発明の絶縁構造で異相導体間を絶縁することを特徴とし、又、本発明のバスダクトの接続ユニットは、本発明の絶縁構造で異相導体間を絶縁することを特徴とする。また、本発明のバスダクト分岐部は、本発明の絶縁構造で異相導体間が絶縁されることを特徴とし、又、本発明のバスダクト接続部は、本発明の絶縁構造で異相導体間が絶縁されることを特徴とする。本発明の絶縁構造は、例えばバスダクトの少なくとも異相導体間に配置するものとし、バスダクトの分岐部に於ける異相導体間や、或いはバスダクトの接続部に於いて、接続すべきバスダクト或いはその端部に於ける少なくとも異相導体間に配置すると好適である。
【００１６】
【作用】
本発明の絶縁構造は、例えば第１絶縁板に形成された第１突出部と、第２絶縁板に形成された第２突出部とを挿入若しくは嵌入状態にして、絶縁スリーブを形成し、好適には第１絶縁板と第２絶縁板を導体を挟む状態若しくは狭持可能な形状及び配置にすることにより、別途絶縁スリーブを用意する必要がなく、ボルト挿通孔に直接ボルトを挿通すれば良くなることから、部品点数を軽減することが可能となると共に、作業工程を軽減でき、結果的にコストダウンに繋がる。更には、第１突出部と第２突出部の挿入状態若しくは嵌入状態で絶縁スリーブを構成することにより、異相導体間や導体とボルト間の充分な沿面距離を確保し、良好な絶縁性を得ることができる。更には、所定の長さを有する第１突出部と第２突出部により、第１絶縁板と第２絶縁板との間に導体を配置するための間隙を形成することが可能であり、容易に絶縁板間に導体を配置する或いは導体両側に絶縁板を配置することができる。
【００１７】
また、本発明の絶縁構造は、例えば第１絶縁板に凸部若しくは凹部の少なくとも一方又は凸部と凹部が設けられ、第２絶縁板に前記第１絶縁板の凸部若しくは凹部又は凸部と凹部に挿入若しくは嵌入可能な凹部若しくは凸部の少なくとも一方又は凹部と凸部が設けられ、前記凸部や凹部と前記凹部や凸部を挿入若しくは嵌入して第１絶縁板と第２絶縁板を重ねて一枚或いは一つの絶縁セパレータを構成し、前記絶縁セパレータ或いは第１絶縁板と第２絶縁板を異相導体間に介在することにより、第１絶縁板と第２絶縁板相互の回り止め或いは絶縁板相互の位置決めが可能になって、絶縁板を揃える必要が無くなり、作業を容易化を図ることができると共に、異相導体間の沿面距離を充分に確保し、良好な絶縁性を得ることができる。更には凹凸の嵌合で一つの絶縁セパレータを構成できるので、部品点数を低減することができる。
【００１８】
また、本発明の絶縁構造は、例えば第１絶縁板に形成された第１突出部と、第２絶縁板に形成された第２突出部とを挿入若しくは嵌入状態にして、絶縁スリーブを形成し、好適には第１絶縁板と第２絶縁板を導体を挟む状態若しくは狭持可能な形状及び配置にし、且つ第１絶縁板の他面に凸部若しくは凹部の少なくとも一方を形成し、第２絶縁板の他面に前記第１絶縁板に形成された凸部若しくは凹部が挿入若しくは嵌入可能な凹部若しくは凸部を設け、第１絶縁板と他の第２絶縁板或いは第２絶縁板と他の第１絶縁板とを凸部若しくは凹部と凹部若しくは凸部を挿入若しくは嵌入状態にし、前記第１絶縁板と他の第２絶縁板或いは前記第２絶縁板と他の第１絶縁板とを異相導体間に介在させることによって、絶縁スリーブを別途用意する必要が無くなり、作業工程が低減されコストダウンに繋げることができ、更には、異相導体間に介在してなる第１絶縁板と第２絶縁板相互が回り止めされているため、絶縁板を揃える必要がなくなり、作業が容易となる。
【００１９】
更に、上記第１突出部の内形等を非円形とすることにより、第１絶縁板と第２絶縁板の全てに回り止めをすることが可能になる。更には、凸部及び凹部を複数設けることにより、より強固に回り止めをすることができる。更には、第１絶縁板若しくは第２絶縁板に設けられている凸部の断面形状若しくは凹部の断面形状を非円形にするとより強固に回り止めをすることができる。
【００２０】
更に、本発明の絶縁構造をバスダクトに使用し、例えば絶縁板と導体との間に導電性部材を介在させ、この導電性部材に分起用端子を接触させることにより、容易に分岐をとることが可能となる。また、本発明の絶縁構造をバスダクトの接続部に使用することで、絶縁スリーブを使用せずにバスダクトの接続を行うことが可能となり、コストダウンや作業の簡略化等を図ることができる。更には、部品点数を減らし、バスダクトの分岐部や接続部の小型化を図ることができる。なお、各作用効果を奏する限度で、各発明の構成要件を追加、削除、変更したものも本発明に含まれる。
【００２１】
【発明の実施の形態】
以下、本発明の絶縁構造等の実施形態について説明するが、本発明は実施形態に限定されるものではない。図１乃至図３は第１実施形態の絶縁構造に関するものであって、図１（ａ）、（ｂ）は第１絶縁板の斜視図及び側面図、図２（ａ）、（ｂ）は第２絶縁板の斜視図及び側面図、図３（ａ）は第１絶縁板と第２絶縁板を対向配置した状態を示す側面図、図３（ｂ）は第１絶縁板の第１突出部に第２絶縁板の第２突出部を挿入或いは嵌入した状態を示す側面図である。
【００２２】
第１実施形態の絶縁構造に於いて、第１絶縁板１０は、図１に示すように、正面視略方形の略平板状であり、その略中央部の一方の面（例えば正面）から略四角筒状の第１突出部１１が外方に垂直方向へ突出して形成されている。筒状の第１突出部１１には、後述する第２突出部２１を挿通可能な正面視略方形の開口部１２が穿設され、換言すれば、開口部１２の周辺から一方に筒状の第１突出部１１が突設されている構成である。更に、前記突出側の面に於ける第１突出部１１の周縁には、正面視略四角枠状の突条１３が形成されている。尚、突条１３を設けない構成とすることも可能であり、又、第１突出部１１、突条１３はそれぞれ第１絶縁板１０に一体で或いは別体で設けることが可能である。
【００２３】
第２絶縁板２０も、図２に示すように、正面視略方形の略平板状であり、その略中央部の一方の面（例えば正面）から略四角柱状の第２突出部２１が外方に垂直方向へ突出して形成され、その略中央部にボルトを挿通可能な正面視円形のボルト挿通孔２２が穿設されており、換言すれば、ボルト挿通孔２２の周辺から一側方に筒状の第２突出部２１が突設されている。第２突出部２１の断面形状の外形或いは外周は、第１突出部１１の断面形状の内形或いは内周に対して僅かに小さい略相似形状である。更に、前記突出側の面に於ける第２突出部２１の外周から所定距離離れた位置に、正面視略四角枠上の突条２３が形成されており、第２突出部２１の外周と突条２３との間に形成された溝２４には、第１突出部１１の先端部が挿入或いは嵌入されることになり、より強固に第１絶縁板１０と第２絶縁板２０の回り止め効果を発揮することができる。尚、突条２３を設けない構成とすることも可能であり、又、第２突出部２１、突条２３はそれぞれ第２絶縁板２０に一体で或いは別体で設けることが可能である。
【００２４】
上記構成の第１絶縁板１０と第２絶縁板２０は、図３（ａ）に示すように、その第１突出部１１と第２突出部２１相互を対向して配置され、図３（ｂ）に示すように、所定の突出長さの第１突出部１１の開口部１２内に所定の突出長さの第２突出部２１が挿入或いは嵌入され、第１絶縁板１０と第２絶縁板２０は前記第１突出部１１の突出長さの間隔を開けて対向配置され、第１実施形態の絶縁構造１が構成されると共に、絶縁スリーブ２が形成される。前記絶縁構造１は、第１絶縁板１０と第２絶縁板２０の間に導体が介在させ、絶縁スリーブ２にボルトを挿通した場合に、第２突出部２１の突出長さ等、少なくとも第２突出部２１の分だけ沿面距離が確保することが可能であり、別途に絶縁スリーブを用意してボルト挿通孔２２に挿通する必要が無い構成である。
【００２５】
尚、第２突出部２１は、その先端が第１絶縁板１０の第１突出部１１が形成されていない他方の面（例えば背面）と略同一面に位置する或いは前記他方の面より若干内側に位置するように形成すると、沿面距離を最大限確保し、絶縁性を向上し安全性を増すことができて好適であり、本実施形態に於ける第２突出部２１の突出長さは、第１絶縁板１０の板厚と第１突出部１１の突出長さの合計と略同一或いは前記合計より若干短く形成されている。但し、これに限定されるものではなく、所要の沿面距離を確保できる範囲の突出長さであれば適宜である。
【００２６】
次に、本発明の第２実施形態の絶縁構造について説明する。図４乃至図６は第２実施形態の絶縁構造に関するものであり、図４（ａ）、（ｂ）は第１絶縁板の斜視図及び側面図、図５（ａ）、（ｂ）は第２絶縁板の斜視図及び側面図、図６（ａ）は第１絶縁板と第２絶縁板を対向配置した状態を示す側面図、図６（ｂ）は第１絶縁板の凸部又は凹部と第２絶縁板の凹部又は凸部を嵌入した状態を示す側面図である。
【００２７】
第２実施形態に於ける第１絶縁板１０ａと第２絶縁板２０ａは、図４及び図５に示すように、正面視略方形の略平板状である同一形状であり、一方の面（例えば正面）に正面視略方形の凸部１１ａ、２１ａ及び凹部１２ａ、２２ａが形成されている。本実施形態の凸部１１ａ、２１ａと凹部１２ａ、２２ａは、第１絶縁板１０ａ或いは第２絶縁板２０ａの正面視で中心から側方にずれた位置に２組形成され、一組は凸部１１ａ、２１ａを中心に上下位置にそれぞれ凹部１２ａ、２２ａが形成され、他組は凹部１２ａ、２２ａを中心に上下位置にそれぞれ凸部１１ａ、２１ａが形成されており、第１絶縁板１０ａ或いは第２絶縁板２０ａには、それぞれ合計３個の凸部１１ａ、２１ａと３個の凹部１２ａ、２２ａが設けられている。また、第１絶縁板１０ａの凸部１１ａ若しくは凹部１２ａと第２絶縁板２０ａの凹部２２ａと凸部２１ａはそれぞれ対応する位置に設けられている。
【００２８】
上記構成の第１絶縁板１０ａと第２絶縁板２０ａは、図６（ａ）に示すように各凸部１１ａ、２１ａと各凹部２２ａ、１２ａを相互に対応させ対向配置され、図６（ｂ）に示すように、対応する凸部１１ａ、２１ａを凹部２２ａ，１２ａに嵌入し、２つの絶縁板１０ａ、２０ａが結合され、略一枚の平板状である絶縁構造１ａが構成される。前記絶縁構造１ａは、例えば絶縁板１０ａ、２０ａ相互が正面に対して垂直方向の中心軸に対して相違する方向等に回転することを無くすことができると共に、絶縁板１０ａ、２０ａ相互の位置決めを確実に行うことができる構成である。
【００２９】
次に、本発明の第３実施形態の絶縁構造について説明する。図７は第３実施形態の絶縁構造に関するものであり、図７（ａ）は第１絶縁板と第２絶縁板を配置した状態を示す側面図、図７（ｂ）は第１絶縁板と第２絶縁板とをそれぞれ突出部相互を挿入或いは嵌入し且つ凸部又は凹部と凹部又は凸部とを嵌入した状態を示す側面図である。
【００３０】
第３実施形態に於ける第１絶縁板１０ｂは、第１実施形態の第１絶縁板１０と同様に、一方の面（例えば正面）から開口部１２ｂが形成されている第１突出部１１ｂが外方に突設され、第１突出部１１ｂの周縁に突条１３ｂが形成されていると共に、第１突出部１１ｂが形成されていない他方の面（例えば背面）に、第２実施形態の第１絶縁板１０ａ等と同様に、凸部１４ｂ及び凹部１５ｂが形成されている。又、第２絶縁板２０ｂは、第１実施形態に第２絶縁板２０と同様に、一方の面（例えば正面）からボルト挿通孔２２ｂが形成されている第２突出部２１ｂが突設され、第２突出部２１ｂの外周から離れた所定位置に突条２３ｂが形成され、第２突出部２１ｂの外周と突条２３ｂ間に溝２４ｂを有すると共に、第２突出部２１ｂが形成されていない他方の面（例えば背面）に、第２実施形態の第２絶縁板２０ａ等と同様に、凸部２５ｂ及び凹部２６ｂが形成されている。
【００３１】
そして、図７（ａ）に示すように、一方の面（例えば正面）が隣り合う第１絶縁板１０ｂと第２絶縁板２０ｂについて、第１突出部１１ｂと第２突出部２１ｂ相互を対向させ、これらの３組をボルト挿通孔２２ｂを揃えて配置し、他方の面（例えば背面）が隣り合う２組の第１絶縁板１０ｂと第２絶縁板２０ｂについて、凸部１４ｂ、２５ｂと凹部２６ｂ、１５ｂ相互をそれぞれ対応させる。その状態から、図７（ｂ）に示すように、第１突出部１１ｂの開口部１２ｂ内に第２突出部２１ｂを挿入或いは嵌入して絶縁スリーブ２ｂを構成し、一方の面が隣り合う第１絶縁板１０ｂと第２絶縁板２０ｂを所定間隔を開けて対向配置すると共に、対応する凸部１４ｂ、２５ｂを凹部２６ｂ，１５ｂに嵌入して他方の面が隣り合う第１絶縁板１０ｂと第２絶縁板２０ｂを結合し、第３実施形態の絶縁構造１ｂを構成する。
【００３２】
上記第３実施形態の絶縁構造１ｂは、複数の第１絶縁板１０ｂと第２絶縁板２０ｂ（本実施形態では夫々３枚ずつ）を交互に結合し、例えば絶縁スリーブ２ｂを有する第１絶縁板１０ｂと第２絶縁板２０ｂ間にそれぞれ配置される複数系統の導体を絶縁することが可能である。更に、複数系統の導体を絶縁する場合にも、別途絶縁スリーブを容易する必要がない。更に、絶縁板１０ｂ、２０ｂ相互が位置決めされ、充分な沿面距離が確保されるので、少なくとも異相導体間の良好な絶縁性を得ることができる。更に、全ての絶縁板１０ｂ、２０ｂがボルト挿通孔２２ｂを中心軸とする回転方向に対して移動規制されるので、例えばボルトの締付けによる共回りを規制することができる。
【００３３】
次に、本発明の第４実施形態の絶縁構造について説明する。図８及び図９は第４実施形態の絶縁構造に関するものであり、図８（ａ）、（ｂ）は第１絶縁板の正面斜視図及び背面斜視図、図９（ａ）、（ｂ）は第２絶縁板の正面斜視図及び背面斜視図である。
【００３４】
第４実施形態に於ける第１絶縁板１０ｃは、図８（ａ）に示すように、一方の面（例えば正面）に設けられている第１突出部１１ｃ、開口部１２ｃ、突条１３ｃが第１、第３実施形態と同一構成であると共に、図８（ｂ）に示すように、他方の面（例えば背面）に設けられている凸部及び凹部が第２、第３実施形態と異なる構成である。又、第２絶縁板２０ｃは、図９（ａ）に示すように、一方の面（例えば正面）に設けられている第２突出部２１ｃ、ボルト挿通孔２２ｃ、突条２３ｃ、溝２４ｃが第１、第３実施形態と同一構成であると共に、図９（ｂ）に示すように、他方の面（例えば背面）に設けられている凸部及び凹部が第２、第３実施形態と異なる構成である。
【００３５】
第１絶縁板１０ｃの背面には、図８（ｂ）に示すように、第２突出部２１ｃが挿入又は嵌入される開口部１２ｃが設けられ、開口部１２ｃの外周縁に一定高さの突条で背面視略四角枠状の第１凸部１４ｃが形成されている。更に、第１凸部１４ｃから一定距離離れた外周の位置に、背面視略四角枠状の突条である第２凸部１５ｃが形成され、第１凸部１４ｃと第２凸部１５ｃとの間に背面視略四角枠状の溝である第１凹部１６ｃが形成されている。更に、第２凸部１５ｃから一定距離離れた外周の位置に、背面視略四角枠状の突条である第３凸部１７ｃが形成され、第２凸部１５ｃと第３凸部１７ｃとの間に背面視略四角枠状の溝である第２凹部１８ｃが形成されている。各凸部１４ｃ、１５ｃ、１７ｃの頂面は略同一平面を形成していると共に、各凹部１６ｃ、１８ｃと第３凸部１７ｃより外方の第１絶縁板１０ｃの背面も略同一平面を形成している。
【００３６】
また、第２絶縁板２０ｃの背面には、図９（ｂ）に示すように、ボルト挿通孔２２ｃが穿設され、ボルト挿通孔２２ｃを中心に一定範囲に背面視略方形の全体凸部２５ｃが形成されている。全体凸部２５ｃの高さは第１絶縁板１０ｃの第１凸部１４ｃ、第２凸部１５ｃ及び第３凸部１７ｃの高さと略同一高さになっており、かかる構成によって、後述する凸部と凹部を嵌入した際に、第１絶縁板１０ｃの背面と第２絶縁板２０ｃの背面とが略同一形状に見えるようになり、美観に優れた絶縁構造或いは絶縁板１０ｃ、２０ｃを提供することができると共に、第１絶縁板１０ｃと第２絶縁板２０ｃの背面相互間を一定の距離に保つことが可能となって、異相導体間の沿面距離を充分に確保することができる。
【００３７】
前記全体凸部２５ｃ上には、ボルト挿通孔２２ｃから一定距離離れた外周の位置に、第１絶縁板１０ｃと第２絶縁板２０ｃの背面相互を重ねた際に前記第１絶縁板１０ｃの第１凹部１６ｃ内に嵌入される背面視略四角枠状の突条である第４凸部２６ｃが形成され、全体凸部２５ｃ上の第４凸部２６ｃに囲まれた領域に第３凹部２７ｃが形成されている。更に、全体凸部２５ｃ上の第４凸部２６ｃから一定距離離れた外周の位置に、背面視略四角枠状の突条である第５凸部２８ｃが形成され、全体凸部２５ｃ上の第４凸部２６ｃと第５凸部２８ｃとの間に背面視略四角枠状の溝である第４凹部２９ｃが形成されている。
【００３８】
本実施形態では、第４凸部２６ｃと第５凸部２８ｃの頂面の高さは、第１絶縁板１０ｃの凸部１４ｃ、１５ｃ、１７ｃの高さを略同一で、前記頂面は略同一平面状に位置しており、第２絶縁板２０ｃの第３凹部２７ｃ内に第１絶縁板１０ｃの第１凸部１４ｃを挿入或いは嵌入し、第２絶縁板２０ｃの第４凹部２９ｃ内に第１絶縁板１０ｃの第２凸部１５ｃを嵌入すると共に、第１絶縁板１０ｃの第１凹部１６ｃ内に第２絶縁板２０ｃの第４凸部２６ｃを嵌入し、第１絶縁板１０ｃの第２凹部１８ｃ内に第２絶縁板２０ｃの第５凸部２８ｃを嵌入する構成となっている。尚、本発明では、複数の凸部や凹部の内、一部又は全部に嵌入せず単に挿入する凸部や凹部を有してもよい。
【００３９】
そして、例えば第３実施形態とほぼ同様に、一方の面（例えば正面）が隣り合う第１絶縁板１０ｃと第２絶縁板２０ｃについて、第１突出部１１ｃと第２突出部２１ｃ相互を対向させて配置し、他方の面（例えば背面）が隣り合う２組の第１絶縁板１０ｃと第２絶縁板２０ｃについて、凸部１４ｃ、１５ｃ、１７ｃ、２６ｃ、２８ｃと凹部１６ｃ、１８ｃ、２７ｃ、２９ｃで対応するものを相互に対向させ、その状態から第１突出部１１ｃの開口部１２ｃ内に第２突出部２１ｃを挿入或いは嵌入して絶縁スリーブを構成し、一方の面が隣り合う第１絶縁板１０ｃと第２絶縁板２０ｃを所定間隔を開けて対向配置すると共に、対応する凸部１４ｃ、１５ｃ、１７ｃ、２６ｃ、２８ｃと凹部１６ｃ、１８ｃ、２７ｃ、２９ｃを相互に嵌入等して他方の面が隣り合う第１絶縁板１０ｃと第２絶縁板２０ｃを結合し、第４実施形態の絶縁構造を構成する。
【００４０】
上記第４実施形態の絶縁構造を使用することにより、異相導体間の沿面距離を充分に確保することが可能となると共に、第１絶縁板１０ｃと第２絶縁板２０ｃの結合状態を強固にすることが可能となる。更に、ボルト挿通孔２２ｃ及び第２突出部２１ｃが挿入又は嵌入される開口部１２ｃを中心に複数の凸部１４ｃ、１５ｃ、１７ｃ、２６ｃ、２８ｃ及び凹部１６ｃ、１８ｃ、２７ｃ、２９ｃが形成されていることから、ボルトと導体との間で絶縁板１０ｃ、２０ｃの背面に於ける沿面距離も充分に確保することが可能となる。
【００４１】
以上、本発明の絶縁構造について説明したが、本発明の絶縁構造は上記実施形態に限定されるものではなく、様々な変形及び拡張をすることが可能である。例えば、第１、第３及び第４実施形態の絶縁板１０、２０等に関して、第１突出部１１等及び第２突出部２１等を絶縁板１０、２０等の略中央部に１個形成する構成で説明したが、例えば絶縁板１０、２０等の正面視の上下或いは左右等に２個以上の複数設ける構成でもよい。
【００４２】
また、第１突出部１１等の正面視或いは断面形状の内形及び第２突出部２１等の正面視或いは断面形状の内形は略正方形で説明したが、本発明には、これらの内形が円形も含め適宜の形状とする場合が含まれ、好適には、三角形、長方形、菱形、六角形、楕円形など非円形とする。又、前記好適な例でも第１突出部１１等の外形は円形であってもよい。
【００４３】
また、第２及び第３実施形態で示した凸部１１ａ、２１ａ等及び凹部１２ａ、２２ａ等の数及び位置、形状などは実施形態に限定されるものではない。また、第４実施形態で示した全体凸部２５ｃは、必須の構成要件ではなく削除することも可能である。
【００４４】
次に、本発明の絶縁構造をバスダクトの分岐部に使用した場合の例について説明する。図１０から図１３はバスダクトの中間部で分岐をとるために使用する例であり、図１０はバスダクトの分岐部の平面説明図、図１１は図１０のバスダクトの分岐部の正面図、図１２は図１１のバスダクト分岐部の断面説明図、図１３分岐ユニットの接続方法を示す正面説明図である。
【００４５】
本例のバスダクト１００は、図１０乃至図１３に示すように、三線からなる導体１０１を絶縁物１０２で被覆され、これらの導体１０１を重ねてハウジングに収納してなる構成であり、前記ハウジングは、導体１０１の幅方向両側に筒状のスペーサ１０３を配置し、導体１０１の厚さ方向両側から断面略コ字形の一対の側板１０４により導体１０１及びスペーサ１０３を狭持し、この側板１０４・１０４相互を締着具１０５で緊締することにより形成されている。
【００４６】
更に、バスダクト１００の略中間部（中間部に限定されない）に於いて、導体１０１・１０１間を一定距離離間するために外側の導体１０１を厚さ方向外側に膨らませて屈曲形成し、且つ一定距離離間した導体１０１の幅方向上部に切欠凹部１０６を形成し、且つ切欠凹部１０６近傍の絶縁物１０２を除去して絶縁物除去部１０１１を形成し、バスダクト１００に分岐箇所を形成している。また、前記ハウジングでは、前記分岐箇所の近傍にスペーサ１０３及び側板１０４が存在せず、前記分岐箇所を中心に長さ方向両側に位置して、別体のスペーサ１０３及び側板１０４、１０７が設けられている構成である。
【００４７】
そして、上記分岐箇所或いは切欠凹部１０６に、第４実施形態の絶縁構造による絶縁セパレータを有する分岐ユニット２００を配置し、バスダクト１００の分岐部を構成する。前記分岐ユニット２００に於いて、その絶縁セパレータには、第１絶縁板１０ｃと第２絶縁板２０ｃとを夫々背面を重ね合わせることにより異相導体１０１・１０１間に介在する中間絶縁セパレータ２０１が構成され、また、最外側の導体１０１とハウジングとの間に、第１絶縁板１０ｃ又は第２絶縁板２０ｃの１枚により外側絶縁セパレータ２０２が構成されている。
【００４８】
中間絶縁セパレータ２０１若しくは外側絶縁セパレータ２０２の第１絶縁板１０ｃの正面と、これと所定間隔を開けて対向する中間絶縁セパレータ２０１若しくは外側絶縁セパレータ２０２の第２絶縁板２０ｃの正面には、それぞれ略板状の導電性部材２０３が沿わして設けられている。前記第１絶縁板１０ｃと前記第２絶縁板２０ｃは、互いに突出部１１ｃ、２１ｃを挿入或いは嵌入することにより結合され、前記突出部１１ｃ、２１ｃにより、前記第１絶縁板１０ｃと第２絶縁板２０ｃの相互間やその導電性部材２０３・２０３相互間に所定間隔の間隙が形成され、分岐ユニット２００を導体１０１の切欠凹部１０６に介在させることを容易にしている。尚、突出部１１ｃ、２１ｃにより形成される導電性部材２０３・２０３相互間の間隙は、導体１０１の厚さより僅かに狭くすると、導体１０１と導電性部材２０３・２０３相互が確実に電気的に接続されることになって好適である。
【００４９】
分岐ユニット２００の最外側の絶縁セパレータである外側絶縁セパレータ１０９の両外側には、長さ方向両側に設けられたバスダクト１００の側板１０７・１０７を被覆接続する継側板２０４が配置され、分岐ユニット２００をバスダクト１００の分岐箇所に配置した場合には、継側板２０４は側板１０７とボルトやナット等の締着具で固定されることになる。そして、突出部１１ｃ、２１ｃ等が嵌入された導電性部材２０３を有する中間絶縁セパレータ２０１、外側絶縁セパレータ１０９や、継側板２０４はボルト挿通孔２２ｃに挿通されるボルト２０５及びナット２０６で締着されることにより、分岐ユニット２００が構成される。
【００５０】
前記分岐ユニット２００をバスダクト１００の分岐箇所に設置してバスダクト１００の分岐部を構成する場合には、図１３に示すように、絶縁セパレータ２０１、２０２、導電性部材２０３、継側板２０４がボルト２０５及びナット２０６で締着された分岐ユニット２００を、バスダクト１００の分岐箇所の上方から、各絶縁セパレータ２０１、２０２の導電性部材２０３・２０３間に各導体１０１が狭持されるように、第１突出部１１ｃが導体１０１の切欠凹部１０６に当接するまで挿入する。その後、バスダクト１００の幅方向両側の対応開放面に上板３０１及び下板３０２を配置して、ビス止めする等によりバスダクト１００に固定し、バスダクト１００の分岐部が構成される。尚、上板３０１には、プラグイン開口部が形成されている或いは形成可能となっている。
【００５１】
上記構成で分岐ユニット２００を導体１０１の切欠凹部１０６に配置してバスダクト１００の分岐部を構成した場合に、導体１０１の上方に導電性部材２０３の一部が存在する構成となり、導電性部材２０３・２０３相互間で且つ導体１０１の上方に、外方に付勢するバネ状端子等の分岐端子を挿入可能な分岐空間３０３が形成される。尚、本例では、第４実施形態の絶縁構造をバスダクト１００の分岐部に採用した場合について説明したが、第１、第２、第３実施形態の絶縁構造など本発明の適宜の絶縁構造を、バスダクト１００の分岐部に採用することができる。
【００５２】
以上、本発明の絶縁構造をバスダクト１００の分岐部に使用することにより、上記第１実施形態から第４実施形態の絶縁構造自体の効果に加えて、容易に分岐部を形成することが可能となると共に、分岐部の形成時に絶縁板１０ｃ、２０ｃ相互等或いは絶縁セパレータ２０１、２０３等が位置決めされていることから、導体１０１との接触不良などを起こすことがなく、分岐ユニット２００を容易に好位置へ配置し、分岐部を形成することができる。
【００５３】
また、第１突出部１１ｃの正面視或いは断面形状の外形を非円形にし、前記切欠凹部１０６を前記外形に対し略相似形で僅かに大きい形状とすると、絶縁板１０ｃ、２０ｃ或いは絶縁セパレータ２０１、２０２が互いにボルト挿通孔２２ｃを中心に回転することを完全に防止することが可能になって好適である。
【００５４】
また、導電性部材２０３を沿わしてなる絶縁板１０ｃ、２０ｃを結合し、これらの外方から継側板２０４を沿わせてボルト２０５及びナット２０６で締着してなる分岐ユニット２００を、例えば上板３０１や下板３０２が存在しない状態の分岐箇所の上方又は下方からから嵌め込むだけで、バスダクト１００の分岐部を形成することができるため、組立コストを削減することが可能となる。
【００５５】
次に、本発明の絶縁構造をバスダクトの接続部に使用した場合の例について説明する。図１４及び図１５は本発明の絶縁構造を使用したバスダクトの接続部の例を示し、図１４は接続部の平面説明図、図１５は接続部の正面図である。
【００５６】
本例のバスダクト１００ａは、図１４及び図１５に示すように、上記分岐部を有するバスダクト１００と略同一構成であって、１０１ａは導体、１０２ａは絶縁物、１０３ａはスペーサ、１０４ａは側板、１０５ａは締着具、１０７ａは別体又は一体の外方に膨出した側板であり、導体１０１ａの導体端部１０８ａは絶縁被覆されていない。そして、接続箇所に於いて、接続すべきバスダクト１００ａ・１００ａが対向配置され、前記対向配置されたバスダクト１００ａ・１００ａの導体端部１０８ａ・１０８ａ相互間を接続ユニット４００により電気的に接続し、バスダクト１００ａ・１００ａの接続部とする構成である。
【００５７】
接続ユニット４００は、上記分岐ユニット２００と同様に、第４実施形態で説明した第１絶縁板１０ｃと第２絶縁板２０ｃによる絶縁セパレータを有し、異相導体１０１ａ・１０１ａ間には、第１絶縁板１０ｃと第２絶縁板２０ｃの組み合わせからなる中間絶縁セパレータ４０１が介在して絶縁し、最外側の導体１０１ａと継測板４０４との間には、第１絶縁板１０ｃ若しくは第２絶縁板２０ｃの単体からなる外側絶縁セパレータ４０２が介在して絶縁する構成である。又、前記絶縁セパレータには、同相の導体端部１０８ａ・１０８ａ間を電気的に接続する導電性部材４０３が絶縁板１０ｃ、２０ｃに沿わして設けられ、最外側から継側板４０４にて狭持し、これらをボルト４０５及びナット４０６などの締着具にて例えば仮締着して接続ユニット４００が構成されている。
【００５８】
そして、バスダクト１００ａ・１００ａの接続部は、対向配置されているバスダクト１００ａ・１００ａの導体端部１０８ａ・１０８ａ間に接続ユニット４００が配置し、継側板４０４とバスダクト側板１０４ａとをボルトやナット等の締着具で固定し、例えば接続ユニット４００の仮締着状態のボルト４０５及びナット４０６等の締着具を緊締することにより接続すべきバスダクト１００ａ・１００ａ相互或いはその導体端部１０８ａ・１０８ａ相互間を電気的に接続状態とし、対応開放面に接続上板３０１ａ及び接続下板３０２ａを設置して被覆し、接続上板３０１ａ及び接続下版３０２ａとバスダクト１００ａ・１００ａとをビス止めすることにより構成し、接続作業が完了するようになっている。
【００５９】
上記構成のバスダクト接続部を使用することにより、上記絶縁構造の実施形態と同様に、絶縁セパレータに別途絶縁スリーブを挿通する必要がなく、コストダウンを図ることができる。また、絶縁板１０ｃ、２０ｃ相互がボルト挿通孔２２ｃを中心に互いに回転することがなく、絶縁セパレータの位置決めが容易であり、結果的に接続作業が容易となる効果を奏する。更には、接続上板３０１ａ或いは接続下板３０２ａにプラグイン開口部を形成することにより、上記分岐部と同様に接続部でも分岐をとることが可能となる。尚、導電性部材２０３・２０３相互間の間隙を導体１０１の厚さより僅かに狭くし、導電性部材２０３・２０３間の間隙に導体１０１を狭入するように、予め締着状態の接続ユニット４００を設置する構成とすることも可能である。
【００６０】
以上、本発明の絶縁構造を使用したバスダクト１００、１００ａの例を説明したが、本発明は上記実施形態や上記例に限定されるものではなく、以下のような拡張及び変形が可能である。例えば、上記例では分岐部に切欠凹部１０６を形成する構成について説明したが、本発明の絶縁構造による分岐ユニット２００に於いて、ボルト２０５及びナット２０６は、バスダクト１００の導体１０１を狭持固定するためのものではなく、基本的に分岐ユニット２００を固定するものであるから、例えばバスダクト１００の切欠凹部１０６が形成されていない導体１０１の場合にも対応可能であって、導体１０１の幅方向上部の一部の絶縁物１０２を除去し、絶縁物１０２を除去した位置に於いて、導体１０１の上方にボルト２０５或いは突出部１１ｃ、２１ｃ等により形成される絶縁スリーブが位置するように配置する構成等にしてもよい。この場合には、図１６及び図１７に示すように、絶縁セパレータ或いは絶縁板１０ｃ、２０ｃ等の正面視左右２箇所をボルト２０５及びナット２０６等の締着具で締着する構成にすると、分岐用端子の挿入時に導電性部材２０３・２０３間の分岐空間を強固或いは安定して確保することが可能となって好適である。
【００６１】
また、分岐ユニット２００及び接続ユニット４００の継側板２０４、４０４の内面に、最外側の絶縁板１０ｃ、２０ｃ等の凸部１５ｃ、２６ｃや凹部１６ｃ、２７ｃ等と嵌合する凸部や凹部を形成すると、継側板２０４、４０４と外側絶縁セパレータ２０２、４０２相互の位置決めも可能となって好適であり、より確実に絶縁板１０ｃ、２０ｃ等の位置を決定し、且つボルト締付けによる共回りも同時に防止することが可能となる。
【００６２】
また、上記例では、分岐ユニット２００及び接続ユニット４００に使用する絶縁板として、上記第４実施形態の絶縁板１０ｃ、２０ｃを使用している場合について説明しているが、分岐ユニット２００や接続ユニット４００には、当然に第１から第３実施形態の絶縁板１０、１０ａ、１０ｂ、２０、２０ａ、２０ｂを使用することが可能である。
【００６３】
また、バスダクトの構成及び形状は上記例のバスダクト１００に限定されるものではなく、本発明は様々なバスダクトに適用可能であり、本発明で対象とするバスダクトは、密着絶縁型バスダクト以外に空気絶縁型バスダクトでも良く、また、３線式以外にも２線式或いは４線式以上のバスダクトでもよい。この場合に夫々、異なる長さの絶縁スリーブを容易する必要がないため、コストダウンに繋がる効果を奏する。
【００６４】
また、分岐ユニット２００、接続ユニット４００、バスダクト１００のハウジング等の構成も上記実施形態や上記例に限定されるものではない。
【００６５】
【発明の効果】
以上、本発明の絶縁構造或いはその絶縁構造を有するバスダクトの分岐ユニットやバスダクトの接続ユニット等を使用することにより、良好な絶縁性を発揮することができると共に、部品点数を低減或いは削減し、コストダウン及び作業の簡略化を図ることができる効果を奏する。例えば絶縁セパレータにより絶縁スリーブを構成することが可能であることから、別途絶縁スリーブを準備することが不要となり、部品点数の削減によってコストダウン等を図ることができる。
【００６６】
また、本発明の絶縁構造をバスダクトの分岐ユニット或いは接続ユニット等に使用することにより、バスダクトの分岐部或いは接続部等の幅を極力狭くし、小型化を図ることができる効果を奏する。特に本発明は空気絶縁型バスダクトのみならず密着絶縁型バスダクトの分岐部或いは接続部等の場合にも、その幅を極力狭くし、小型化を図ることができる。
【図面の簡単な説明】
【図１】（ａ）本発明の第１実施形態に於ける第１絶縁板の斜視図。
（ｂ）本発明の第１実施形態に於ける第１絶縁版の側面図。
【図２】（ａ）本発明の第１実施形態に於ける第２絶縁板の斜視図。
（ｂ）本発明の第１実施形態に於ける第２絶縁版の側面図。
【図３】（ａ）本発明の第１実施形態に於ける第１絶縁板と第２絶縁板を対向配置した状態を示す側面図。
（ｂ）本発明の第１実施形態に於ける第１絶縁板の第１突出部に第２絶縁板の第２突出部を挿入或いは嵌入した状態を示す側面図。
【図４】（ａ）本発明の第２実施形態に於ける第１絶縁板の斜視図。
（ｂ）本発明の第２実施形態に於ける第１絶縁版の側面図。
【図５】（ａ）本発明の第２実施形態に於ける第２絶縁板の斜視図。
（ｂ）本発明の第２実施形態に於ける第２絶縁版の側面図。
【図６】（ａ）本発明の第２実施形態に於ける第１絶縁板と第２絶縁板を対向配置した状態を示す側面図。
（ｂ）本発明の第２実施形態に於ける第１絶縁板の凸部又は凹部と第２絶縁板の凹部又は凸部を嵌入した状態を示す側面図。
【図７】（ａ）本発明の第３実施形態に於ける第１絶縁板と第２絶縁板を配置した状態を示す側面図。
（ｂ）本発明の第３実施形態に於ける第１絶縁板と第２絶縁板とをそれぞれ突出部相互を挿入或いは嵌入し且つ凸部又は凹部と凹部又は凸部とを嵌入した状態を示す側面図。
【図８】（ａ）本発明の第４実施形態に於ける第１絶縁板の正面斜視図。
（ｂ）本発明の第４実施形態に於ける第１絶縁版の背面斜視図。
【図９】（ａ）本発明の第４実施形態に於ける第２絶縁板の正面斜視図。
（ｂ）本発明の第４実施形態に於ける第２絶縁板の背面斜視図。
【図１０】本発明の絶縁構造を使用したバスダクトの分岐部の平面説明図。
【図１１】図１０のバスダクトの分岐部の正面図。
【図１２】図１１の断面説明図。
【図１３】本発明の絶縁構造を使用した分岐ユニット及び分岐ユニットが組み付けられるバスダクトを示す正面説明図。
【図１４】本発明の絶縁構造を使用したバスダクトの接続部の平面説明図。
【図１５】図１４のバスダクトの接続部の正面図。
【図１６】本発明の絶縁構造を使用したバスダクトの分岐部の第２例を示す平面説明図。
【図１７】図１６のバスダクトの分岐部の正面図。
【符号の説明】
１、１ａ、１ｂ絶縁構造
２、２ｂ絶縁スリーブ
１０、１０ａ、１０ｂ、１０ｃ第１絶縁板
１１、１１ｂ、１１ｃ第１突出部
１２、１２ｂ、１２ｃ開口部
１３、１３ｂ、１３ｃ突条
１１ａ、１４ｂ、１４ｃ、１５ｃ、１７ｃ凸部
１２ａ、１５ｂ、１６ｃ、１８ｃ凹部
２０、２０ａ、２０ｂ、２０ｃ第２絶縁板
２１、２１ｂ、２１ｃ第２突出部
２２、２２ｂ、２２ｃボルト挿通孔
２３、２３ｂ、２３ｃ突条
２４、２４ｂ、２４ｃ溝
２１ａ、２５ｂ、２６ｃ、２８ｃ凸部
２２ａ、２５ｂ、２７ｃ、２９ｃ凹部
１００バスダクト
２００分岐ユニット
４００接続ユニット
２０１、４０１中間絶縁セパレータ
２０２、４０２外側絶縁セパレータ
２０３、４０３導電性部材
２０４、４０４継測板
２０５、４０５ボルト
２０６、４０６ナット[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to an insulating structure that insulates between different-phase conductors of a bus duct, and a branch unit and a connecting unit of the bus duct having the insulating structure.
[0002]
[Prior art]
Conventionally, there is a bus duct connecting portion disclosed in Japanese Utility Model Publication No. 44-22289 as a technology related to an insulating structure for insulating between different phase conductors of a bus duct. The bus duct connecting portion is an insulating bus duct in which bus bars having an insulating coating on the outer periphery are arranged in parallel in the duct, and prismatic projections are provided on one side and concave grooves corresponding to the projections are provided on the other side. A plurality of insulating partition plates that are provided and through which the insertion holes penetrating the protrusions and the concave grooves are inserted are overlapped with each other by sequentially fitting the respective protrusions into the adjacent concave grooves, and an insulating cylinder is placed in the insertion hole. The spring plate and the spacing piece that presses the spring plate are inserted into and fixed to the outer peripheral surface of the outer peripheral surface, and the integrated member is disposed between the through holes provided facing both side surfaces of the duct and fitted into the end portion. A projection of the insulating partition plate is fitted into the fitting groove of each bus bar in which a groove is engraved and the insulating coating in the vicinity thereof is peeled off, and the corresponding bus bar to be connected to this fitting is also fitted into the projection. Align and lock each layer of busbar Combined, wherein the insulating tube fitting insert the bolt through the pressing piece which is screwed fixed to the distance piece is made by tightening the nut.
[0003]
Further, Japanese Utility Model Publication No. 53-50497 is characterized in that a bus bar is held by interposing a rib-shaped insulating spacer formed so as to be connected to each other in the axial direction between the bus bars or between the bus bar and the ground. A bus bar support device is disclosed.
[0004]
[Problems to be solved by the invention]
However, although the technique disclosed in the Japanese Utility Model Publication No. 44-22289 is effective in securing a long creepage distance between each phase of the bus bar and obtaining a higher electric strength, a prismatic protrusion and a concave groove are formed from the bus bar. Since the creepage distance between the bus bar and the bolt that reaches the bolt via the insulated partition plate is shortened, when the bolt is inserted into the bolt insertion hole formed in the insulating partition plate, the bolt insertion hole is insulated. A cylinder must be inserted and a bolt must be inserted through this insulating cylinder. That is, it is essential to insert an insulating cylinder into the bolt insertion hole, and it is necessary to prepare a part called an insulating cylinder. Such a large number of parts increases costs in terms of inventory management, manufacturing, and construction, and complicates the work. Furthermore, in order to correspond to a 3-wire bus duct connection portion, a 2-wire bus duct connection portion, a 4-wire bus duct connection portion, etc., various lengths of different lengths are used for each bus duct connection portion. Since an insulating cylinder is required, the cost increase and the complexity of work in terms of inventory management and manufacturing become more remarkable.
[0005]
Furthermore, in the technique of Japanese Utility Model Publication No. 44-22289, there is a protrusion between one insulating partition plate and the bus duct side plate, and there is no protrusion between the other insulating partition plate and the bus duct side plate. Due to the need for a piece and a pressing piece, the cost increases further, and the interposition of the spacing piece and the pressing piece increases the width of the connecting portion and enlarges the connecting portion. Is produced.
[0006]
Further, the technique disclosed in Japanese Utility Model Laid-Open No. 53-50497 also has a configuration in which an insulating spacer with a rib is tightened with a bolt covered with an insulating tube, and the bus bar is supported by an insulating spacer with a rib interposed between the bus bars. As the above-mentioned extra parts are required, there arises a problem that the cost is increased and the work is complicated as described above. Furthermore, it is conceivable that the supporting device for supporting the bus bar is used for an air-insulated bus duct as described in the examples. However, when the present technology is used for a connection portion of a close-insulated bus duct, etc. Due to the presence of ribs, the problem of an increase in size arises.
[0007]
The present invention is proposed in order to solve the above-described problems, and can provide good insulation, reduce the number of parts, reduce costs and simplify work, and It is an object of the present invention to provide a bus duct branch unit, a bus duct connection unit, and the like.
[0008]
Another object of the present invention is to provide an insulating structure that can be miniaturized by reducing the width of a branching portion or connecting portion of a bus duct as much as possible even when used for a connecting portion of a close-insulated bus duct, for example. And a bus duct branching unit, a bus duct connecting unit, and the like.
[0009]
[Means for Solving the Problems]
  The insulating structure of the present invention includes a first insulating plate having a substantially flat plate shape in which a cylindrical first projecting portion projects outward from one surface, and can be inserted into the first projecting portion and project inwardly in the projecting direction. A second projecting portion having a bolt insertion hole formed therein has a substantially flat second insulating plate projecting outward from one surface;The first projecting portion and the second projecting portion are arranged to face each other,Inserting or fitting the second protrusion into the first protrusionBy doingThe first projecting portion and the second projecting portion constitute an insulating sleeve, and at least the conductor disposed between the first insulating plate and the second insulating plate in the inserted or fitted state, and the first insulation It is possible to insulate the outer side of the plate or the outer side of the second insulating plate or a conductor disposed on both of them. For example, a first insulating plate having a cylindrical first projecting portion projecting outward from one surface, and an outer shape projecting outward from one surface and substantially similar to the inner shape of the first projecting portion and slightly smaller And a second insulating plate having a second projecting portion with a bolt insertion hole formed therein is inserted into or inserted into the first projecting portion, and the second insulating plate is inserted or inserted into the second insulating plate. An insulating sleeve is formed by one projecting portion and a second projecting portion, a bolt is inserted into the insulating sleeve to form an insulating structure, and at least a part of the conductor is interposed between the first insulating plate and the second insulating plate, Insulate at least between different-phase conductors.
[0010]
  In addition, the insulating structure of the present invention has a substantially flat first insulating plate having a convex portion protruding outward from one surface, and a concave portion into which the convex portion of the first insulating plate can be inserted or fitted. A substantially flat second insulating plate provided, and the first insulating plate and the second insulating plate are prevented from rotating together and integrated by insertion or insertion of the convex portion into the concave portion. Further, it is possible to insulate at least the conductors arranged on both outer sides of the first insulating plate and the second insulating plate which are integrated in the inserted or fitted state. For example, a first insulating plate having a convex portion protruding outward from one surface, a second insulating plate having a concave portion into which the convex portion of the first insulating plate can be inserted or fitted on one surface, and the convex portion and the concave portion are inserted. Alternatively, the first insulating plate and the second insulating plate are arranged in an inserted state to prevent the first insulating plate and the second insulating plate from rotating, and the first insulating plate and the second insulating plate are interposed between at least a part of the different-phase conductors. An insulating structure that insulates between conductors. More preferably,A first insulating plate having a substantially flat plate shape, in which an opening is formed in a substantially central portion, and a non-circular frame-shaped convex portion and a concave portion are provided on one surface around the opening portion; A non-circular frame-shaped recess and projection into which the non-circular frame-shaped projection and recess of the insulating plate can be inserted or fitted, and a substantially flat second insulating plate provided on one side, By inserting or inserting the non-circular frame-shaped convex portions and concave portions of the one insulating plate and the non-circular frame-shaped concave portions and convex portions of the second insulating plate, the first insulating plate and the second Insulating plates can be integrated with each other to prevent rotation, and at least the conductors disposed on both outer sides of the first insulating plate and the second insulating plate integrated in the inserted or fitted state can be insulated. It is preferable to have an insulating structure characterized by being.
[0011]
  In addition, the insulating structure of the present invention is a substantially flat plate in which the cylindrical first projecting portion protrudes outward from one surface, the convex portion protrudes outward from the other surface, or the concave portion is provided on the other surface. A first insulating plate having a shape and a second projecting portion which can be inserted into the first projecting portion and has a bolt insertion hole formed in the projecting direction therein, projecting outward from one surface, A concave portion in which the convex portion can be inserted or fitted is provided on the other surface, or a convex portion that can be inserted or fitted in the concave portion of the first insulating plate protrudes outward from the other surface. Having an insulating plate,The first protrusion of one first insulating plate and the second protrusion of one second insulating plate are arranged to face each other,In the first protrusion of the first insulating plateTheInsert or insert the second protrusion of one second insulating plateBy doingThe first projecting portion and the second projecting portion constitute an insulating sleeve, and the convex portion is inserted into or inserted into the concave portion.TheOne first insulating plate and another second insulating plate orTheOne second insulating plate and the other first insulating plate are integrated so as to be prevented from rotating together, and at least in the inserted state or the inserted stateTheA first insulating plate;TheA conductor disposed between one second insulating plate;TheOutside of the first insulating plate orTheIt is characterized in that it is possible to insulate the conductor disposed on the outside of the second insulating plate or on both of them.
[0012]
For example, a cylindrical first protruding portion protruding outward from one surface, a first insulating plate having at least one of a convex portion or a concave portion protruding outward from the other surface, and protruding outward from one surface, A second projecting portion having a slightly smaller outer shape that is substantially similar to the inner shape of the projecting portion and having a bolt insertion hole formed therein, and a convex portion or a concave portion of the first insulating plate are inserted on the other surface Or it has the 2nd insulating board which has a recessed part or convex part which can be inserted, and in the state which inserted or inserted the convex part and the recessed part in the 1st insulating board and the 2nd insulating board which are interposed between at least one part of a different phase conductor A first insulating plate and at least a part of the conductor interposed between the first insulating plate and another second insulating plate with the second protruding portion inserted or fitted in the first protruding portion; An insulating sleeve is formed by the second protrusion, and the first insulating plate, the second insulating plate, and the other second An insulating structure which detent the edge plate, insulating the least different phase conductors.
[0013]
  In addition, the insulating structure of the present invention is characterized in that a protrusion is formed at a position away from the outer periphery of the second protruding portion of the second insulating plate or the one second insulating plate by a predetermined distance, and the second protruding portion and the second protruding portion Forming the insulating sleeve by forming a groove between the ridge and inserting or fitting the tip of the first protruding portion of the first insulating plate or the first insulating plate into the groove. It is characterized by. In addition, the insulating structure of the present invention is non-circular on the outer periphery of the opening centered on the opening where the second protrusion of the first protrusion is inserted or fitted on the other surface of the first insulating plate. A frame-shaped convex part and a concave part are provided, and a non-circular frame-shaped concave part and a convex part are formed on the outer surface of the bolt insertion hole around the bolt insertion hole of the second protrusion on the other surface of the second insulating plate. A non-circular frame-shaped convex portion and concave portion of the first insulating plate and a non-circular frame-shaped concave portion and convex portion of the second insulating plate are inserted or fitted into each other, and the first insulating plate The second insulating plate and the second insulating plate are prevented from rotating together and integrated.Furthermore, the insulating structure of the present invention is an inner shape of a cross-sectional shape of the first protrusion.In other words, the shape of the opening into which the second protrusion of the first protrusion is inserted or inserted,The outer shape of the cross-sectional shape of the second protrusion is non-circular. Moreover, it is preferable that the cross-sectional shape of the convex portion or the concave portion provided in the first insulating plate or the second insulating plate is non-circular.
[0014]
Furthermore, the insulating structure of the present invention is characterized in that a plurality of convex portions or concave portions provided on the first insulating plate or the second insulating plate are provided on one surface or the other surface. In other words, a plurality of sets of the convex portions and the concave portions that can be inserted into each other are provided.
[0015]
  Also,The unit relating to the bus duct of the present invention is characterized in that the different-phase conductors are insulated by the insulating structure of the present invention, and the bus duct is branched or connected. That is,The branch unit of the bus duct of the present invention is characterized in that the insulation structure of the present invention insulates the different phase conductors.In addition, the bus duct connection unit of the present invention is characterized in that the different-phase conductors are insulated by the insulating structure of the present invention. Also,The bus duct branch portion of the present invention is characterized in that the different phase conductors are insulated by the insulating structure of the present invention.,or,The bus duct connecting portion of the present invention is characterized in that the different phase conductors are insulated by the insulating structure of the present invention. The insulating structure of the present invention is disposed, for example, between at least different-phase conductors of a bus duct, between the different-phase conductors at the branch portion of the bus duct, or at the bus duct to be connected at the end of the bus duct. It is preferable to arrange at least between the different-phase conductors.
[0016]
[Action]
The insulating structure of the present invention is preferably formed by inserting or fitting a first protruding portion formed on the first insulating plate and a second protruding portion formed on the second insulating plate to form an insulating sleeve. The first insulating plate and the second insulating plate are in a state in which the conductor is sandwiched or sandwiched, and it is not necessary to prepare a separate insulating sleeve, and it is sufficient to insert the bolt directly into the bolt insertion hole. As a result, the number of parts can be reduced and the work process can be reduced, resulting in cost reduction. Furthermore, by forming the insulating sleeve with the first protruding portion and the second protruding portion inserted or fitted, a sufficient creepage distance between the different-phase conductors or between the conductors and the bolts is secured, and good insulation is obtained. be able to. Furthermore, it is possible to form a gap for arranging the conductor between the first insulating plate and the second insulating plate by the first protruding portion and the second protruding portion having a predetermined length, and it is easy. A conductor can be disposed between the insulating plates, or insulating plates can be disposed on both sides of the conductor.
[0017]
In the insulating structure of the present invention, for example, the first insulating plate is provided with at least one of a convex portion or a concave portion, or a convex portion and a concave portion, and the second insulating plate is provided with a convex portion, a concave portion, or a convex portion of the first insulating plate. At least one of a concave portion or a convex portion or a concave portion and a convex portion that can be inserted or inserted into the concave portion is provided, and the first insulating plate and the second insulating plate are inserted or inserted by inserting or inserting the convex portion or the concave portion and the concave portion or the convex portion. By stacking one sheet or one insulating separator and interposing the insulating separator or the first insulating plate and the second insulating plate between the different-phase conductors, the first insulating plate and the second insulating plate can be prevented from rotating together. Insulating plates can be positioned with each other, eliminating the need to align the insulating plates, facilitating work, and ensuring sufficient creepage distance between different-phase conductors to obtain good insulation. it can. Furthermore, since one insulating separator can be formed by fitting the unevenness, the number of parts can be reduced.
[0018]
In addition, the insulating structure of the present invention forms an insulating sleeve by inserting or fitting, for example, a first protruding portion formed on the first insulating plate and a second protruding portion formed on the second insulating plate. Preferably, the first insulating plate and the second insulating plate are in a state where the conductor is sandwiched or sandwiched, and at least one of a convex portion or a concave portion is formed on the other surface of the first insulating plate, and the second Provided on the other surface of the insulating plate is a concave portion or convex portion into which the convex portion or concave portion formed on the first insulating plate can be inserted or fitted, and the first insulating plate and the other second insulating plate or the second insulating plate and others. The first insulating plate and the convex portion or the concave portion and the concave portion or the convex portion are inserted or fitted, and the first insulating plate and the other second insulating plate or the second insulating plate and the other first insulating plate are It is necessary to prepare an insulation sleeve separately by interposing between different-phase conductors. The work process can be reduced and the cost can be reduced. Furthermore, since the first insulating plate and the second insulating plate interposed between the different-phase conductors are prevented from rotating, it is necessary to align the insulating plates. This makes it easier to work.
[0019]
Further, by making the inner shape or the like of the first projecting portion non-circular, it is possible to prevent rotation of all of the first insulating plate and the second insulating plate. Furthermore, by providing a plurality of convex portions and concave portions, it is possible to more firmly prevent rotation. Furthermore, if the cross-sectional shape of the convex portion or the concave portion provided on the first insulating plate or the second insulating plate is non-circular, the rotation can be more firmly prevented.
[0020]
Furthermore, by using the insulating structure of the present invention for a bus duct, for example, a conductive member is interposed between an insulating plate and a conductor, and a branching terminal is brought into contact with the conductive member, so that a branch can be easily taken. It becomes possible. In addition, by using the insulating structure of the present invention for the connecting portion of the bus duct, it is possible to connect the bus duct without using an insulating sleeve, and it is possible to reduce costs and simplify operations. Furthermore, the number of parts can be reduced, and the branching and connecting portions of the bus duct can be reduced in size. In addition, what added, deleted, and changed the component requirement of each invention in the limit which has each effect is included in this invention.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the insulating structure and the like of the present invention will be described, but the present invention is not limited to the embodiments. FIGS. 1 to 3 relate to the insulating structure of the first embodiment. FIGS. 1A and 1B are a perspective view and a side view of the first insulating plate, and FIGS. A perspective view and a side view of the second insulating plate, FIG. 3A is a side view showing a state in which the first insulating plate and the second insulating plate are arranged to face each other, and FIG. 3B is a first protrusion of the first insulating plate. It is a side view which shows the state which inserted or inserted the 2nd protrusion part of the 2nd insulating board in the part.
[0022]
In the insulating structure of the first embodiment, as shown in FIG. 1, the first insulating plate 10 has a substantially flat plate shape with a substantially square shape when viewed from the front, and is substantially from one surface (for example, the front surface) of the substantially central portion. A rectangular cylindrical first protruding portion 11 is formed to protrude outward in the vertical direction. The cylindrical first protrusion 11 is provided with an opening 12 having a substantially square shape in front view through which a second protrusion 21 described later can be inserted. In other words, the cylindrical first protrusion 11 has a cylindrical shape extending from the periphery of the opening 12 to one side. It is the structure by which the 1st protrusion part 11 is protrudingly provided. Further, a protrusion 13 having a substantially square frame shape in front view is formed on the periphery of the first protrusion 11 on the surface on the protrusion side. In addition, it is also possible to employ a configuration in which the protrusion 13 is not provided, and the first protrusion 11 and the protrusion 13 can be provided integrally with the first insulating plate 10 or separately.
[0023]
As shown in FIG. 2, the second insulating plate 20 is also a substantially flat plate having a substantially square shape when viewed from the front, and a substantially quadrangular columnar second protrusion 21 is outward from one surface (for example, the front surface) of the substantially central portion. A bolt insertion hole 22 having a circular shape when viewed from the front is formed at a substantially central portion of the bolt insertion hole 22. In other words, a tube is formed on one side from the periphery of the bolt insertion hole 22. A second projecting portion 21 having a shape is projected. The outer shape or outer periphery of the cross-sectional shape of the second projecting portion 21 is a substantially similar shape that is slightly smaller than the inner shape or inner periphery of the cross-sectional shape of the first projecting portion 11. Further, a protrusion 23 on the substantially square frame in front view is formed at a position away from the outer periphery of the second protrusion 21 on the protrusion-side surface by a predetermined distance, and protrudes from the outer periphery of the second protrusion 21. The leading end of the first protrusion 11 is inserted or inserted into the groove 24 formed between the strips 23, so that the first insulating plate 10 and the second insulating plate 20 are more securely prevented from rotating. Can be demonstrated. In addition, it is also possible to employ a configuration in which the protrusions 23 are not provided, and the second protrusions 21 and the protrusions 23 can be provided integrally with the second insulating plate 20 or separately.
[0024]
As shown in FIG. 3A, the first insulating plate 10 and the second insulating plate 20 having the above-described configuration are disposed so that the first protruding portion 11 and the second protruding portion 21 face each other. ), A second protrusion 21 having a predetermined protrusion length is inserted or fitted into the opening 12 of the first protrusion 11 having a predetermined protrusion length, and the first insulating plate 10 and the second insulating plate Reference numeral 20 is disposed to face the first protruding portion 11 with an interval of the protruding length, so that the insulating structure 1 of the first embodiment is formed and the insulating sleeve 2 is formed. The insulating structure 1 has at least a second length such as a protruding length of the second protruding portion 21 when a conductor is interposed between the first insulating plate 10 and the second insulating plate 20 and a bolt is inserted through the insulating sleeve 2. The creeping distance can be secured by the amount of the protruding portion 21, and there is no need to prepare an insulating sleeve separately and insert it into the bolt insertion hole 22.
[0025]
The second projecting portion 21 has a tip positioned substantially on the same surface as the other surface (for example, the back surface) of the first insulating plate 10 where the first projecting portion 11 is not formed, or slightly inward from the other surface. It is preferable that the creeping distance is maximized, the insulation property is improved and the safety is increased, and the projecting length of the second projecting portion 21 in this embodiment is as follows. It is formed substantially the same as the total thickness of the first insulating plate 10 and the protruding length of the first protruding portion 11 or slightly shorter than the total. However, it is not limited to this, and it is appropriate as long as the projecting length is within a range in which a required creepage distance can be secured.
[0026]
Next, an insulating structure according to the second embodiment of the present invention will be described. FIGS. 4 to 6 relate to the insulating structure of the second embodiment. FIGS. 4A and 4B are perspective and side views of the first insulating plate, and FIGS. 5A and 5B are first views. FIG. 6A is a side view showing a state in which the first insulating plate and the second insulating plate are arranged opposite to each other, and FIG. 6B is a convex portion or a concave portion of the first insulating plate. It is a side view which shows the state which inserted the recessed part or convex part of the 2nd insulating board.
[0027]
As shown in FIGS. 4 and 5, the first insulating plate 10a and the second insulating plate 20a in the second embodiment have the same shape, which is a substantially flat plate having a substantially square shape when viewed from the front. Convex portions 11a and 21a and concave portions 12a and 22a having a substantially square shape in front view are formed on the front surface. The convex portions 11a and 21a and the concave portions 12a and 22a of the present embodiment are formed in two sets at positions shifted laterally from the center in the front view of the first insulating plate 10a or the second insulating plate 20a. Concave portions 12a and 22a are formed at the vertical positions around 11a and 21a, and convex portions 11a and 21a are formed at the vertical positions around the concave portions 12a and 22a in the other sets, respectively. The two insulating plates 20a are provided with a total of three convex portions 11a and 21a and three concave portions 12a and 22a, respectively. Further, the convex portion 11a or the concave portion 12a of the first insulating plate 10a and the concave portion 22a and the convex portion 21a of the second insulating plate 20a are provided at corresponding positions.
[0028]
As shown in FIG. 6A, the first insulating plate 10a and the second insulating plate 20a having the above-described configuration are disposed so as to face each other so that the convex portions 11a and 21a and the concave portions 22a and 12a correspond to each other. ), The corresponding convex portions 11a and 21a are fitted into the concave portions 22a and 12a, and the two insulating plates 10a and 20a are coupled to each other, thereby forming an approximately one flat insulating structure 1a. The insulating structure 1a can eliminate, for example, the insulating plates 10a and 20a from rotating in a direction different from the central axis perpendicular to the front surface, and can position the insulating plates 10a and 20a relative to each other. It is the structure which can be performed reliably.
[0029]
Next, an insulating structure according to the third embodiment of the present invention will be described. FIG. 7 relates to the insulating structure of the third embodiment. FIG. 7 (a) is a side view showing a state in which the first insulating plate and the second insulating plate are arranged, and FIG. 7 (b) is the first insulating plate. It is a side view which shows the state which inserted or inserted each protrusion part with the 2nd insulating board, and inserted the convex part or the recessed part, and the recessed part or the convex part.
[0030]
As with the first insulating plate 10 of the first embodiment, the first insulating plate 10b according to the third embodiment has a first protruding portion 11b in which an opening 12b is formed from one surface (for example, the front surface). The second protrusion of the second embodiment is provided on the other surface (for example, the back surface) that protrudes outward, has a protrusion 13b formed on the periphery of the first protrusion 11b, and does not have the first protrusion 11b. Similar to the one insulating plate 10a and the like, a convex portion 14b and a concave portion 15b are formed. Further, the second insulating plate 20b is provided with a second protruding portion 21b in which a bolt insertion hole 22b is formed from one surface (for example, the front surface) in the same manner as the second insulating plate 20 in the first embodiment, The protrusion 23b is formed at a predetermined position away from the outer periphery of the second protrusion 21b, the groove 24b is provided between the outer periphery of the second protrusion 21b and the protrusion 23b, and the other is not formed with the second protrusion 21b. Similar to the second insulating plate 20a and the like of the second embodiment, a convex portion 25b and a concave portion 26b are formed on this surface (for example, the back surface).
[0031]
Then, as shown in FIG. 7 (a), the first projecting portion 11b and the second projecting portion 21b are opposed to each other with respect to the first insulating plate 10b and the second insulating plate 20b whose one surfaces (for example, the front surface) are adjacent to each other. These three sets are arranged with the bolt insertion holes 22b aligned, and the convex portions 14b, 25b and the concave portions 26b of the two sets of the first insulating plate 10b and the second insulating plate 20b whose other surfaces (for example, the back surface) are adjacent to each other. 15b correspond to each other. From this state, as shown in FIG. 7B, the insulating sleeve 2b is formed by inserting or fitting the second protruding portion 21b into the opening 12b of the first protruding portion 11b, and one surface is adjacent to the second protruding portion 21b. The first insulating plate 10b and the second insulating plate 20b are arranged opposite to each other with a predetermined interval, and the corresponding convex portions 14b and 25b are fitted into the concave portions 26b and 15b, and the other surfaces are adjacent to the first insulating plate 10b and the second insulating plate 10b. The two insulating plates 20b are joined to form the insulating structure 1b of the third embodiment.
[0032]
The insulating structure 1b of the third embodiment includes a plurality of first insulating plates 10b and second insulating plates 20b (three each in this embodiment) that are alternately coupled, and for example, a first insulating plate having an insulating sleeve 2b. It is possible to insulate a plurality of conductors disposed between 10b and the second insulating plate 20b. Furthermore, when insulating multiple conductors, it is not necessary to facilitate separate insulation sleeves. Further, since the insulating plates 10b and 20b are positioned relative to each other and a sufficient creepage distance is secured, at least good insulation between the different-phase conductors can be obtained. Furthermore, since all the insulating plates 10b and 20b are restricted in movement with respect to the rotation direction with the bolt insertion hole 22b as the central axis, for example, it is possible to restrict co-rotation by tightening bolts.
[0033]
Next, an insulating structure according to the fourth embodiment of the present invention will be described. FIGS. 8 and 9 relate to the insulating structure of the fourth embodiment, and FIGS. 8A and 8B are a front perspective view and a rear perspective view of the first insulating plate, and FIGS. 9A and 9B. These are the front perspective view and back perspective view of a 2nd insulating board.
[0034]
As shown in FIG. 8A, the first insulating plate 10c according to the fourth embodiment includes a first protrusion 11c, an opening 12c, and a protrusion 13c provided on one surface (for example, the front surface). The configuration is the same as that of the first and third embodiments, and as shown in FIG. 8B, the convex portion and the concave portion provided on the other surface (for example, the back surface) are different from those of the second and third embodiments. It is a configuration. Further, as shown in FIG. 9A, the second insulating plate 20c has a second protrusion 21c, a bolt insertion hole 22c, a protrusion 23c, and a groove 24c provided on one surface (for example, the front surface). 1. The configuration is the same as that of the third embodiment, and as shown in FIG. 9B, the convex portion and the concave portion provided on the other surface (for example, the back surface) are different from those of the second and third embodiments. It is.
[0035]
As shown in FIG. 8B, an opening 12c into which the second protrusion 21c is inserted or fitted is provided on the back surface of the first insulating plate 10c, and a protrusion with a certain height is formed on the outer periphery of the opening 12c. A first convex portion 14c having a substantially square frame shape in rear view is formed on the strip. Furthermore, the 2nd convex part 15c which is a protrusion of the substantially square frame shape in back view is formed in the outer peripheral position away from the 1st convex part 14c by the fixed distance, and the 1st convex part 14c and the 2nd convex part 15c A first recess 16c, which is a substantially rectangular frame-like groove in rear view, is formed therebetween. Further, a third convex portion 17c, which is a substantially quadrangular frame-like protrusion in rear view, is formed at a position on the outer periphery that is a fixed distance away from the second convex portion 15c, and the second convex portion 15c and the third convex portion 17c A second recess 18c, which is a substantially square frame-like groove in the rear view, is formed therebetween. The top surfaces of the convex portions 14c, 15c, and 17c form substantially the same plane, and the back surfaces of the first insulating plates 10c outside the concave portions 16c and 18c and the third convex portion 17c also form substantially the same plane. is doing.
[0036]
Further, as shown in FIG. 9B, a bolt insertion hole 22c is formed on the back surface of the second insulating plate 20c, and the entire convex portion 25c having a substantially square shape in a rear view around the bolt insertion hole 22c in a certain range. Is formed. The height of the entire convex portion 25c is substantially the same as the height of the first convex portion 14c, the second convex portion 15c, and the third convex portion 17c of the first insulating plate 10c. When the portion and the recess are inserted, the back surface of the first insulating plate 10c and the back surface of the second insulating plate 20c appear to have substantially the same shape, thereby providing an insulating structure or insulating plates 10c and 20c with excellent aesthetics. In addition, it is possible to maintain a constant distance between the back surfaces of the first insulating plate 10c and the second insulating plate 20c, and a sufficient creepage distance between the different-phase conductors can be ensured.
[0037]
On the entire convex portion 25c, when the back surfaces of the first insulating plate 10c and the second insulating plate 20c are overlapped with each other at the outer peripheral position separated from the bolt insertion hole 22c by a predetermined distance, the first insulating plate 10c A fourth convex portion 26c, which is a substantially rectangular frame-like protrusion in back view, is formed in the first concave portion 16c, and a third concave portion 27c is formed in a region surrounded by the fourth convex portion 26c on the entire convex portion 25c. Is formed. Furthermore, the 5th convex part 28c which is a back surface substantially square frame-like protrusion is formed in the outer peripheral position away from the 4th convex part 26c on the general convex part 25c by the fixed distance, and the 5th convex part 28c on the general convex part 25c is formed. Between the 4 convex part 26c and the 5th convex part 28c, the 4th recessed part 29c which is a groove | channel of a back view substantially square frame shape is formed.
[0038]
In the present embodiment, the heights of the top surfaces of the fourth protrusions 26c and the fifth protrusions 28c are substantially the same as the heights of the protrusions 14c, 15c, and 17c of the first insulating plate 10c, and the top surfaces are substantially the same. The first projection 14c of the first insulating plate 10c is inserted or fitted into the third recess 27c of the second insulating plate 20c, and is located in the same plane, and is inserted into the fourth recess 29c of the second insulating plate 20c. While inserting the 2nd convex part 15c of the 1st insulating board 10c, inserting the 4th convex part 26c of the 2nd insulating board 20c in the 1st crevice 16c of the 1st insulating board 10c, the 1st insulating board 10c The fifth convex portion 28c of the second insulating plate 20c is inserted into the two concave portion 18c. In addition, in this invention, you may have the convex part and recessed part which do not fit in a part or all among several convex parts and recessed parts, and insert simply.
[0039]
For example, in the same manner as in the third embodiment, the first projecting portion 11c and the second projecting portion 21c are opposed to each other with respect to the first insulating plate 10c and the second insulating plate 20c whose one surface (for example, the front surface) is adjacent. Concerning two sets of first insulating plate 10c and second insulating plate 20c, the other surfaces (for example, back surfaces) are adjacent to each other, convex portions 14c, 15c, 17c, 26c, 28c and concave portions 16c, 18c, 27c, 29c In this state, the second protrusions 21c are inserted or inserted into the openings 12c of the first protrusions 11c to form an insulating sleeve, and one surface is adjacent to the first insulation. The plate 10c and the second insulating plate 20c are arranged opposite to each other with a predetermined interval, and the corresponding convex portions 14c, 15c, 17c, 26c, 28c and the concave portions 16c, 18c, 27c, 29c are inserted into each other, etc. And the first insulating plate 10c is plane adjacent and coupling a second insulating plate 20c, constituting the insulating structure of the fourth embodiment.
[0040]
By using the insulating structure of the fourth embodiment, it is possible to ensure a sufficient creepage distance between the different-phase conductors and strengthen the coupling state of the first insulating plate 10c and the second insulating plate 20c. It becomes possible. Further, a plurality of convex portions 14c, 15c, 17c, 26c, 28c and concave portions 16c, 18c, 27c, 29c are formed around the opening 12c into which the bolt insertion hole 22c and the second projecting portion 21c are inserted or fitted. Therefore, a sufficient creepage distance on the back surface of the insulating plates 10c and 20c can be secured between the bolt and the conductor.
[0041]
Although the insulating structure of the present invention has been described above, the insulating structure of the present invention is not limited to the above embodiment, and various modifications and expansions can be made. For example, with respect to the insulating plates 10, 20, etc. of the first, third, and fourth embodiments, one first protruding portion 11, etc., second protruding portion 21, etc. are formed substantially at the center of the insulating plates 10, 20, etc. Although described in the configuration, for example, a configuration in which two or more of the insulating plates 10 and 20 are provided on the top and bottom or the left and right of the front view may be used.
[0042]
Further, the inner shape of the first protrusion 11 or the like in the front view or the cross-sectional shape and the inner shape of the second protrusion 21 or the like in the front view or the cross-sectional shape have been described as being substantially square, but in the present invention, these inner shapes Includes an appropriate shape including a circle, preferably a non-circular shape such as a triangle, rectangle, rhombus, hexagon, or ellipse. In the preferred example, the outer shape of the first protruding portion 11 and the like may be circular.
[0043]
Further, the number, position, shape, and the like of the convex portions 11a and 21a and the concave portions 12a and 22a shown in the second and third embodiments are not limited to the embodiments. Moreover, the whole convex part 25c shown in 4th Embodiment can also be deleted instead of an essential structural requirement.
[0044]
Next, an example in which the insulating structure of the present invention is used for a branch portion of a bus duct will be described. 10 to 13 are examples used for branching at an intermediate portion of the bus duct, FIG. 10 is a plan view of the branch portion of the bus duct, FIG. 11 is a front view of the branch portion of the bus duct of FIG. FIG. 12 is a cross-sectional explanatory view of the bus duct branch portion of FIG. 11, and FIG. 13 is a front explanatory view showing a connection method of the branch unit.
[0045]
As shown in FIGS. 10 to 13, the bus duct 100 of the present example is configured by covering a conductor 101 made of three wires with an insulator 102 and stacking these conductors 101 in a housing. The cylindrical spacers 103 are arranged on both sides of the conductor 101 in the width direction, and the conductor 101 and the spacer 103 are sandwiched by a pair of side plates 104 having a substantially U-shaped cross section from both sides in the thickness direction of the conductor 101. It is formed by tightening each other with a fastener 105.
[0046]
Further, in the substantially intermediate portion (not limited to the intermediate portion) of the bus duct 100, the outer conductor 101 is bent and formed outwardly in the thickness direction so as to be spaced apart from each other by a certain distance between the conductors 101 and 101. A notch recess 106 is formed in the upper portion of the separated conductor 101 in the width direction, and the insulator 102 in the vicinity of the notch recess 106 is removed to form an insulator removal portion 1011, and a branch point is formed in the bus duct 100. Further, in the housing, the spacer 103 and the side plate 104 do not exist in the vicinity of the branch point, and the separate spacer 103 and the side plates 104 and 107 are provided on both sides in the length direction around the branch point. It is the composition which is.
[0047]
And the branch unit 200 which has the insulation separator by the insulation structure of 4th Embodiment is arrange | positioned in the said branch location or the notch recessed part 106, and the branch part of the bus duct 100 is comprised. In the branch unit 200, the insulating separator includes an intermediate insulating separator 201 interposed between the different-phase conductors 101 and 101 by overlapping the first insulating plate 10c and the second insulating plate 20c on the back side. Further, an outer insulating separator 202 is constituted by one of the first insulating plate 10c or the second insulating plate 20c between the outermost conductor 101 and the housing.
[0048]
The front surface of the first insulating plate 10c of the intermediate insulating separator 201 or the outer insulating separator 202 and the front surface of the second insulating plate 20c of the intermediate insulating separator 201 or the outer insulating separator 202 facing each other at a predetermined interval are substantially A plate-like conductive member 203 is provided along. The first insulating plate 10c and the second insulating plate 20c are coupled to each other by inserting or inserting the protruding portions 11c and 21c. The protruding portions 11c and 21c are used to connect the first insulating plate 10c and the second insulating plate. A gap having a predetermined interval is formed between 20c and between the conductive members 203 and 203, so that the branch unit 200 can be easily interposed in the notch recess 106 of the conductor 101. If the gap between the conductive members 203 and 203 formed by the protruding portions 11c and 21c is slightly narrower than the thickness of the conductor 101, the conductor 101 and the conductive members 203 and 203 are reliably electrically connected to each other. This is preferable.
[0049]
On both outer sides of the outer insulating separator 109, which is the outermost insulating separator of the branch unit 200, joint plates 204 that cover and connect the side plates 107 and 107 of the bus duct 100 provided on both sides in the length direction are arranged. Is arranged at a branching point of the bus duct 100, the joint side plate 204 is fixed to the side plate 107 with a fastening tool such as a bolt or a nut. The intermediate insulating separator 201, the outer insulating separator 109, and the joint plate 204 having the conductive member 203 into which the protruding portions 11c, 21c and the like are inserted are fastened with bolts 205 and nuts 206 inserted into the bolt insertion holes 22c. Thus, the branch unit 200 is configured.
[0050]
When the branch unit 200 is installed at a branch point of the bus duct 100 to form a branch portion of the bus duct 100, the insulating separators 201 and 202, the conductive member 203, and the joint plate 204 are bolts 205 as shown in FIG. And the branch unit 200 fastened with the nut 206 from the upper side of the branch portion of the bus duct 100 so that the conductors 101 are sandwiched between the conductive members 203 and 203 of the insulating separators 201 and 202. Insert until the protruding portion 11 c contacts the notch recess 106 of the conductor 101. After that, the upper plate 301 and the lower plate 302 are arranged on the corresponding open surfaces on both sides in the width direction of the bus duct 100 and fixed to the bus duct 100 by screws or the like, and the branch portion of the bus duct 100 is configured. The upper plate 301 has or can be formed with a plug-in opening.
[0051]
When the branch unit 200 is arranged in the notch recess 106 of the conductor 101 and the branch portion of the bus duct 100 is configured with the above configuration, a part of the conductive member 203 exists above the conductor 101, and the conductive member 203 A branch space 303 into which a branch terminal such as a spring-like terminal biased outward is inserted between 203 and above the conductor 101 is formed. In this example, the case where the insulating structure of the fourth embodiment is adopted in the branch portion of the bus duct 100 has been described. However, the appropriate insulating structure of the present invention such as the insulating structures of the first, second, and third embodiments is used. It can be employed in the branch portion of the bus duct 100.
[0052]
As described above, by using the insulating structure of the present invention for the branch portion of the bus duct 100, in addition to the effects of the insulating structure itself of the first to fourth embodiments, it is possible to easily form the branch portion. In addition, since the insulating plates 10c and 20c or the like or the insulating separators 201 and 203 are positioned at the time of forming the branch portion, the branch unit 200 can be easily used without causing poor contact with the conductor 101. It can arrange | position to a position and can form a branch part.
[0053]
Further, when the outer shape of the first protrusion 11c in a front view or a cross-sectional shape is made non-circular and the notch recess 106 has a shape that is substantially similar to the outer shape and slightly larger, the insulating plates 10c, 20c or the insulating separator 201, It is possible to completely prevent the 202 from rotating around the bolt insertion hole 22c.
[0054]
In addition, the branch unit 200 formed by joining the insulating plates 10c and 20c along the conductive member 203 and fastening the joint plate 204 from the outside with the bolt 205 and the nut 206 is provided, for example, Since the branch portion of the bus duct 100 can be formed simply by fitting from above or below the branch point where the plate 301 and the lower plate 302 are not present, the assembly cost can be reduced.
[0055]
Next, an example in which the insulating structure of the present invention is used for a connecting portion of a bus duct will be described. 14 and 15 show an example of a connecting portion of a bus duct using the insulating structure of the present invention, FIG. 14 is an explanatory plan view of the connecting portion, and FIG. 15 is a front view of the connecting portion.
[0056]
As shown in FIGS. 14 and 15, the bus duct 100a of this example has substantially the same configuration as the bus duct 100 having the above-described branching portion, where 101a is a conductor, 102a is an insulator, 103a is a spacer, 104a is a side plate, 105a. Is a fastener, 107a is a separate or integral side plate that bulges outward, and the conductor end portion 108a of the conductor 101a is not covered with insulation. Then, the bus ducts 100a and 100a to be connected are arranged opposite to each other at the connection place, and the conductor ends 108a and 108a of the bus ducts 100a and 100a arranged opposite to each other are electrically connected by the connection unit 400, and the bus duct is connected. It is the structure used as the connection part of 100a * 100a.
[0057]
Similar to the branch unit 200, the connection unit 400 includes the insulating separator formed by the first insulating plate 10c and the second insulating plate 20c described in the fourth embodiment. An intermediate insulating separator 401 composed of a combination of the plate 10c and the second insulating plate 20c is interposed for insulation, and the first insulating plate 10c or the second insulating plate 20c is provided between the outermost conductor 101a and the connection plate 404. It is the structure which insulates through the outer side insulation separator 402 which consists of a single body. The insulating separator is provided with a conductive member 403 that electrically connects the conductor end portions 108a and 108a of the same phase along the insulating plates 10c and 20c, and is sandwiched by the joint plate 404 from the outermost side. The connection unit 400 is configured by, for example, temporarily fastening them with fastening tools such as bolts 405 and nuts 406.
[0058]
The connecting portions of the bus ducts 100a and 100a are arranged with the connecting unit 400 between the conductor end portions 108a and 108a of the bus ducts 100a and 100a arranged so as to face each other. Between the bus ducts 100a and 100a or between the conductor ends 108a and 108a to be connected by fastening with fasteners such as bolts 405 and nuts 406 in a temporarily fastened state of the connection unit 400, for example. The connection upper plate 301a and the connection lower plate 302a are installed and covered on the corresponding open surfaces, and the connection upper plate 301a and the connection lower plate 302a and the bus ducts 100a and 100a are screwed. The connection work is completed.
[0059]
By using the bus duct connecting portion having the above configuration, it is not necessary to insert an insulating sleeve separately through the insulating separator, as in the embodiment of the insulating structure, and the cost can be reduced. Moreover, the insulating plates 10c and 20c do not rotate with respect to each other with the bolt insertion hole 22c as a center, so that the positioning of the insulating separator is easy, and as a result, the connection operation is facilitated. Furthermore, by forming a plug-in opening in the connection upper plate 301a or the connection lower plate 302a, it is possible to branch at the connection portion as well as the branch portion. Note that the connection unit 400 in a tightened state is previously set so that the gap between the conductive members 203 and 203 is slightly narrower than the thickness of the conductor 101 and the conductor 101 is inserted into the gap between the conductive members 203 and 203. It is also possible to adopt a configuration in which
[0060]
The example of the bus ducts 100 and 100a using the insulating structure of the present invention has been described above. However, the present invention is not limited to the above embodiment and the above example, and can be expanded and modified as follows. For example, in the above example, the configuration in which the notch recess 106 is formed in the branch portion has been described. However, in the branch unit 200 having the insulating structure according to the present invention, the bolt 205 and the nut 206 sandwich and fix the conductor 101 of the bus duct 100. For example, since the branch unit 200 is fixed, it can be applied to the case of the conductor 101 in which the notch recess 106 of the bus duct 100 is not formed. A part of the insulator 102 is removed, and the insulating sleeve formed by the bolt 205 or the projecting portions 11c and 21c is positioned above the conductor 101 at the position where the insulator 102 is removed. You may make it. In this case, as shown in FIG. 16 and FIG. 17, if the two parts on the left and right of the front view such as the insulating separator or the insulating plates 10c and 20c are fastened with the fastening tools such as the bolt 205 and the nut 206, the branching occurs. It is preferable that the branch space between the conductive members 203 and 203 can be secured firmly or stably when the terminal is inserted.
[0061]
Further, on the inner surfaces of the joint plates 204 and 404 of the branch unit 200 and the connection unit 400, convex portions and concave portions that fit with the convex portions 15c and 26c, the concave portions 16c and 27c, etc. of the outermost insulating plates 10c and 20c, etc. Then, the joint plates 204 and 404 and the outer insulating separators 202 and 402 can be positioned relative to each other, which is preferable. The positions of the insulating plates 10c and 20c are more reliably determined, and simultaneous rotation by bolt tightening is prevented at the same time. It becomes possible to do.
[0062]
Moreover, although the said example demonstrated the case where the insulating plates 10c and 20c of the said 4th Embodiment are used as an insulating plate used for the branch unit 200 and the connection unit 400, the branch unit 200 and a connection unit are demonstrated. Of course, it is possible to use the insulating plates 10, 10 a, 10 b, 20, 20 a, 20 b of the first to third embodiments for 400.
[0063]
Further, the configuration and shape of the bus duct is not limited to the bus duct 100 of the above example, and the present invention can be applied to various bus ducts. A type bus duct may be used, and in addition to a three-wire type, a two-wire type or a four-wire type or more bus duct may be used. In this case, since it is not necessary to facilitate the insulation sleeves having different lengths, the cost can be reduced.
[0064]
Further, the configurations of the branch unit 200, the connection unit 400, the housing of the bus duct 100, and the like are not limited to the above-described embodiments and examples.
[0065]
【The invention's effect】
As described above, by using the insulation structure of the present invention or the bus duct branch unit or the bus duct connection unit having the insulation structure, it is possible to achieve good insulation and reduce or reduce the number of parts, thereby reducing the cost. There exists an effect which can aim at down and simplification of an operation | work. For example, since the insulating sleeve can be constituted by an insulating separator, it is not necessary to prepare a separate insulating sleeve, and the cost can be reduced by reducing the number of components.
[0066]
Further, by using the insulating structure of the present invention for the branch unit or connection unit of the bus duct, the width of the branch portion or connection portion of the bus duct can be reduced as much as possible, and the size can be reduced. In particular, the present invention can reduce the width as much as possible in the case of not only the air-insulated bus duct but also the branching portion or connecting portion of the close-insulated bus duct, thereby achieving miniaturization.
[Brief description of the drawings]
FIG. 1A is a perspective view of a first insulating plate in a first embodiment of the present invention.
(B) The side view of the 1st insulating plate in 1st Embodiment of this invention.
FIG. 2A is a perspective view of a second insulating plate in the first embodiment of the present invention.
(B) The side view of the 2nd insulating plate in 1st Embodiment of this invention.
FIG. 3A is a side view showing a state in which a first insulating plate and a second insulating plate are arranged to face each other in the first embodiment of the present invention.
(B) The side view which shows the state which inserted or inserted the 2nd protrusion part of the 2nd insulating board in the 1st protrusion part of the 1st insulating board in 1st Embodiment of this invention.
FIG. 4A is a perspective view of a first insulating plate in a second embodiment of the present invention.
(B) The side view of the 1st insulating plate in 2nd Embodiment of this invention.
FIG. 5A is a perspective view of a second insulating plate in a second embodiment of the present invention.
(B) The side view of the 2nd insulating plate in 2nd Embodiment of this invention.
FIG. 6A is a side view showing a state in which a first insulating plate and a second insulating plate are arranged opposite to each other in the second embodiment of the present invention.
(B) The side view which shows the state which inserted the convex part or recessed part of the 1st insulating board in 2nd Embodiment of this invention, and the recessed part or convex part of the 2nd insulating plate.
FIG. 7A is a side view showing a state in which a first insulating plate and a second insulating plate are arranged in a third embodiment of the present invention.
(B) A state in which the first insulating plate and the second insulating plate according to the third embodiment of the present invention are inserted or inserted into each other and the protruding portion or the recessed portion and the recessed portion or the protruding portion are inserted. Side view.
FIG. 8A is a front perspective view of a first insulating plate in a fourth embodiment of the present invention.
(B) The rear perspective view of the 1st insulating plate in 4th Embodiment of this invention.
FIG. 9A is a front perspective view of a second insulating plate in a fourth embodiment of the present invention.
(B) The rear perspective view of the 2nd insulating board in 4th Embodiment of this invention.
FIG. 10 is an explanatory plan view of a branch portion of a bus duct using the insulating structure of the present invention.
11 is a front view of a branch portion of the bus duct of FIG.
12 is a cross-sectional explanatory view of FIG.
FIG. 13 is a front explanatory view showing a branch unit using the insulating structure of the present invention and a bus duct to which the branch unit is assembled.
FIG. 14 is an explanatory plan view of a connecting portion of a bus duct using the insulating structure of the present invention.
15 is a front view of a connecting portion of the bus duct of FIG.
FIG. 16 is an explanatory plan view showing a second example of a branch portion of a bus duct using the insulating structure of the present invention.
FIG. 17 is a front view of a branch portion of the bus duct of FIG.
[Explanation of symbols]
1, 1a, 1b Insulation structure
2, 2b Insulation sleeve
10, 10a, 10b, 10c First insulating plate
11, 11b, 11c First protrusion
12, 12b, 12c opening
13, 13b, 13c
11a, 14b, 14c, 15c, 17c Convex part
12a, 15b, 16c, 18c Recess
20, 20a, 20b, 20c Second insulating plate
21, 21b, 21c Second protrusion
22, 22b, 22c Bolt insertion hole
23, 23b, 23c
24, 24b, 24c groove
21a, 25b, 26c, 28c Convex part
22a, 25b, 27c, 29c Recess
100 bus duct
200 branch unit
400 connection unit
201, 401 Intermediate insulation separator
202, 402 Outside insulating separator
203, 403 conductive member
204, 404 Connection board
205, 405 volts
206, 406 Nut

Claims

筒状の第１突出部が一面から外方に突設されている略平板状の第１絶縁板と、
該第１突出部内に挿入可能で且つ内部に突出方向へボルト挿通孔が穿設された第２突出部が一面から外方に突設されている略平板状の第２絶縁板を有し、
該第２絶縁板の該第２突出部の外周から所定距離離れた位置に突条を形成して、該第２突出部と該突条との間に溝を形成し、
該第１突出部と該第２突出部を対向配置して、該第１突出部の先端部を該溝に挿入若しくは嵌入するようにして該第１突出部内に該第２突出部を挿入若しくは嵌入することにより、該第１突出部と該第２突出部で絶縁スリーブを構成し、
少なくとも、該挿入状態若しくは嵌入状態で該第１絶縁板と該第２絶縁板間に配置される導体と、該第１絶縁板の外方若しくは該第２絶縁板の外方若しくはその両者に配置される導体とを絶縁可能であることを特徴とする絶縁構造。A first insulating plate having a substantially flat plate shape in which a cylindrical first protruding portion protrudes outward from one surface;
A second projecting part having a substantially flat plate-like shape, having a second projecting part projecting outward from one surface, the second projecting part being inserted in the first projecting part and having a bolt insertion hole bored in the projecting direction inside;
Forming a protrusion at a predetermined distance from the outer periphery of the second protrusion of the second insulating plate, forming a groove between the second protrusion and the protrusion;
The first projecting portion and the second projecting portion are arranged to face each other, and the tip end portion of the first projecting portion is inserted or fitted into the groove so that the second projecting portion is inserted into the first projecting portion or By inserting, an insulating sleeve is constituted by the first protrusion and the second protrusion,
At least the conductor arranged between the first insulating plate and the second insulating plate in the inserted state or the inserted state, and the outer side of the first insulating plate, the outer side of the second insulating plate, or both An insulating structure characterized in that it can be insulated from a conductor to be formed.

筒状の第１突出部が一面から外方に突設され、凸部が他面から外方に突設され若しくは凹部が他面に設けられている略平板状の第１絶縁板と、
該第１突出部内に挿入可能で且つ内部に突出方向へボルト挿通孔が穿設された第２突出部が一面から外方に突設され、該第１絶縁板の凸部を挿入若しくは嵌入可能な凹部が他面に設けられ若しくは該第１絶縁板の凹部に挿入若しくは嵌入可能な凸部が他面から外方に突設されている略平板状の第２絶縁板を有し、
一の第２絶縁板の該第２突出部の外周から所定距離離れた位置に突条を形成して、該第２突出部と該突条との間に溝を形成し、
一の第１絶縁板の第１突出部と該一の第２絶縁板の第２突出部を対向配置して、該第１突出部の先端部を該溝に挿入若しくは嵌入するようにして該一の第１絶縁板の第１突出部内に該一の第２絶縁板の第２突出部を挿入若しくは嵌入することにより、該第１突出部と該第２突出部で絶縁スリーブを構成すると共に、
該凸部の該凹部への挿入若しくは嵌入により該一の第１絶縁板と他の第２絶縁板若しくは該一の第２絶縁板と他の第１絶縁板を相互に回り止めして一体化して設け、
少なくとも、該挿入状態若しくは嵌入状態で該一の第１絶縁板と該一の第２絶縁板間に配置される導体と、該一の第１絶縁板の外方若しくは該一の第２絶縁板の外方若しくはその両者に配置される導体とを絶縁可能であることを特徴とする絶縁構造。A first insulating plate having a substantially flat plate shape in which a cylindrical first protruding portion protrudes outward from one surface, a convex portion protrudes outward from the other surface, or a concave portion is provided on the other surface;
A second projecting portion that can be inserted into the first projecting portion and has a bolt insertion hole formed in the projecting direction is projected outward from one surface, and the convex portion of the first insulating plate can be inserted or inserted. A concave portion provided on the other surface, or a convex portion that can be inserted or fitted into the concave portion of the first insulating plate has a substantially flat second insulating plate that protrudes outward from the other surface,
Forming a ridge at a position a predetermined distance away from the outer periphery of the second protrusion of one second insulating plate, forming a groove between the second protrusion and the ridge,
The first projecting portion of one first insulating plate and the second projecting portion of the one second insulating plate are arranged to face each other, and the tip portion of the first projecting portion is inserted or fitted into the groove. By inserting or fitting the second projecting portion of the one second insulating plate into the first projecting portion of the one first insulating plate, the first projecting portion and the second projecting portion constitute an insulating sleeve. ,
The first insulating plate and the other second insulating plate, or the one second insulating plate and the other first insulating plate are prevented from rotating together and integrated by inserting or fitting the convex portion into the concave portion. Provided
A conductor disposed between the one first insulating plate and the one second insulating plate in at least the inserted state or the inserted state; and the outside of the one first insulating plate or the one second insulating plate. Insulating structure characterized in that it can insulate from conductors arranged on the outside or both.

筒状の第１突出部が一面から外方に突設され、凸部が他面から外方に突設され且つ凹部が他面に設けられている略平板状の第１絶縁板と、A first insulating plate having a substantially flat plate shape in which a cylindrical first protruding portion protrudes outward from one surface, a convex portion protrudes outward from the other surface, and a concave portion is provided on the other surface;
該第１突出部内に挿入可能で且つ内部に突出方向へボルト挿通孔が穿設された第２突出部が一面から外方に突設され、該第１絶縁板の凸部を挿入若しくは嵌入可能な凹部が他面に設けられ且つ該第１絶縁板の凹部に挿入若しくは嵌入可能な凸部が他面から外方に突設されている略平板状の第２絶縁板を有し、A second projecting portion that can be inserted into the first projecting portion and has a bolt insertion hole formed in the projecting direction is projected outward from one surface, and the convex portion of the first insulating plate can be inserted or inserted. A concave portion provided on the other surface, and a convex portion that can be inserted or fitted into the concave portion of the first insulating plate has a substantially flat second insulating plate protruding outward from the other surface,
該第１絶縁板の凸部及び凹部として、該第１絶縁板の他面に、該第１突出部の該第２突出部が挿入若しくは嵌入される開口部を中心にして該開口部の外周に非円形枠状の凸部及び凹部を設け、As the convex portions and concave portions of the first insulating plate, the outer periphery of the opening portion is centered on the opening portion into which the second protruding portion of the first protruding portion is inserted or fitted into the other surface of the first insulating plate. Provided with a non-circular frame-shaped convex part and concave part,
該第２絶縁板の凹部及び凸部として、該第２絶縁板の他面に、該第２突出部のボルト挿通孔を中心にして該ボルト挿通孔の外周に非円形枠状の凹部及び凸部を設け、As the concave and convex portions of the second insulating plate, non-circular frame-shaped concave and convex portions are formed on the outer surface of the bolt insertion hole around the bolt insertion hole of the second protrusion on the other surface of the second insulating plate. Set up a section,
一の第１絶縁板の第１突出部と一の第２絶縁板の第２突出部を対向配置して、該一の第１絶縁板の第１突出部内に該一の第２絶縁板の第２突出部を挿入若しくは嵌入することにより、該第１突出部と該第２突出部で絶縁スリーブを構成すると共に、The first projecting portion of the first insulating plate and the second projecting portion of the second insulating plate are arranged to face each other, and the first projecting portion of the first insulating plate is disposed in the first projecting portion of the first insulating plate. By inserting or inserting the second protrusion, the first protrusion and the second protrusion constitute an insulating sleeve, and
該第１絶縁板の非円形枠状の凸部及び凹部と、該第２絶縁板の非円形枠状の凹部及び凸部とを相互に挿入若しくは嵌入することにより、該一の第１絶縁板と他の第２絶縁板若しくは該一の第２絶縁板と他の第１絶縁板を相互に回り止めして一体化して設け、By inserting or fitting the non-circular frame-shaped convex portions and concave portions of the first insulating plate and the non-circular frame-shaped concave portions and convex portions of the second insulating plate, the one first insulating plate And the other second insulating plate or the one second insulating plate and the other first insulating plate are provided so as to be prevented from rotating together and integrated.
少なくとも、該挿入状態若しくは嵌入状態で該一の第１絶縁板と該一の第２絶縁板間に配置される導体と、該一の第１絶縁板の外方若しくは該一の第２絶縁板の外方若しくはその両者に配置される導体とを絶縁可能であることを特徴とする絶縁構造。A conductor disposed between the one first insulating plate and the one second insulating plate in at least the inserted state or the inserted state; and the outside of the one first insulating plate or the one second insulating plate. Insulating structure characterized in that it can insulate from conductors arranged on the outside or both.

筒状の第１突出部が一面から外方に突設され、凸部が他面から外方に突設され且つ凹部が他面に設けられている略平板状の第１絶縁板と、A first insulating plate having a substantially flat plate shape in which a cylindrical first protruding portion protrudes outward from one surface, a convex portion protrudes outward from the other surface, and a concave portion is provided on the other surface;
該第１突出部内に挿入可能で且つ内部に突出方向へボルト挿通孔が穿設された第２突出部が一面から外方に突設され、該第１絶縁板の凸部を挿入若しくは嵌入可能な凹部が他面に設けられ且つ該第１絶縁板の凹部に挿入若しくは嵌入可能な凸部が他面から外方に突設されている略平板状の第２絶縁板を有し、A second projecting portion that can be inserted into the first projecting portion and has a bolt insertion hole formed in the projecting direction is projected outward from one surface, and the convex portion of the first insulating plate can be inserted or inserted. A concave portion provided on the other surface, and a convex portion that can be inserted or fitted into the concave portion of the first insulating plate has a substantially flat second insulating plate protruding outward from the other surface,
該第１絶縁板の凸部及び凹部として、該第１絶縁板の他面に、該第１突出部の該第２突出部が挿入若しくは嵌入される開口部を中心にして該開口部の外周に非円形枠状の凸部及び凹部を設け、As the convex portions and concave portions of the first insulating plate, the outer periphery of the opening portion is centered on the opening portion into which the second protruding portion of the first protruding portion is inserted or fitted into the other surface of the first insulating plate. Provided with a non-circular frame-shaped convex part and concave part,
該第２絶縁板の凹部及び凸部として、該第２絶縁板の他面に、該第２突出部のボルト挿通孔を中心にして該ボルト挿通孔の外周に非円形枠状の凹部及び凸部を設け、As the concave and convex portions of the second insulating plate, non-circular frame-shaped concave and convex portions are formed on the outer surface of the bolt insertion hole around the bolt insertion hole of the second protrusion on the other surface of the second insulating plate. Set up a section,
一の第２絶縁板の該第２突出部の外周から所定距離離れた位置に突条を形成して、該第２突出部と該突条との間に溝を形成し、Forming a ridge at a position a predetermined distance away from the outer periphery of the second protrusion of one second insulating plate, forming a groove between the second protrusion and the ridge,
一の第１絶縁板の第１突出部と一の第２絶縁板の第２突出部を対向配置して、該第１突出部の先端部を該溝に挿入若しくは嵌入するようにして該一の第１絶縁板の第１突出部内に該一の第２絶縁板の第２突出部を挿入若しくは嵌入することにより、該第１突出部と該第２突出部で絶縁スリーブを構成すると共に、The first projecting portion of one first insulating plate and the second projecting portion of one second insulating plate are arranged opposite to each other, and the tip of the first projecting portion is inserted or fitted into the groove. By inserting or fitting the second projecting portion of the second insulating plate into the first projecting portion of the first insulating plate, an insulating sleeve is constituted by the first projecting portion and the second projecting portion, and
該第１絶縁板の非円形枠状の凸部及び凹部と、該第２絶縁板の非円形枠状の凹部及び凸部とを相互に挿入若しくは嵌入することにより、該一の第１絶縁板と他の第２絶縁板若しくは該一の第２絶縁板と他の第１絶縁板を相互に回り止めして一体化して設け、By inserting or fitting the non-circular frame-shaped convex portions and concave portions of the first insulating plate and the non-circular frame-shaped concave portions and convex portions of the second insulating plate, the one first insulating plate And the other second insulating plate or the one second insulating plate and the other first insulating plate are provided so as to be prevented from rotating together and integrated.
少なくとも、該挿入状態若しくは嵌入状態で該一の第１絶縁板と該一の第２絶縁板間に配置される導体と、該一の第１絶縁板の外方若しくは該一の第２絶縁板の外方若しくはその両者に配置される導体とを絶縁可能であることを特徴とする絶縁構造。A conductor disposed between the one first insulating plate and the one second insulating plate in at least the inserted state or the inserted state; and the outside of the one first insulating plate or the one second insulating plate. Insulating structure characterized in that it can insulate from conductors arranged on the outside or both.

前記第１突出部の前記第２突出部が挿入若しくは嵌入される開口部の形状及び前記第２突出部の断面形状の外形が非円形であることを特徴とする請求項１〜４の何れかに記載の絶縁構造。 The shape of the opening part into which the second protrusion part of the first protrusion part is inserted or inserted and the outer shape of the cross-sectional shape of the second protrusion part are non-circular. 2. Insulation structure described in.

略中央部に開口部が形成され、該開口部を中心として該開口部の外周に非円形枠状の凸部及び凹部が一面に設けられている略平板状の第１絶縁板と、
該第１絶縁板の非円形枠状の凸部及び凹部が挿入若しくは嵌入可能な非円形枠状の凹部及び凸部が一面に設けられている略平板状の第２絶縁板とを有し、
該第１絶縁板の非円形枠状の凸部及び凹部と、該第２絶縁板の非円形枠状の凹部及び凸部とを相互に挿入若しくは嵌入することにより、該第１絶縁板と該第２絶縁板とを相互に回り止めして一体化して設け、
少なくとも、該挿入若しくは嵌入状態で一体化された該第１絶縁板及び該第２絶縁板の両外側に配置される導体を絶縁可能であることを特徴とする絶縁構造。An approximately flat plate-shaped first insulating plate having an opening formed in a substantially central portion, and a non-circular frame-shaped convex portion and a concave portion provided on one surface around the opening portion;
A non-circular frame-shaped concave portion and a concave portion in which the non-circular frame-shaped convex portion and concave portion of the first insulating plate can be inserted or fitted, and a substantially flat second insulating plate provided on one surface;
The first insulating plate and the non-circular frame-shaped convex portions and concave portions of the first insulating plate and the non-circular frame-shaped concave portions and convex portions of the second insulating plate are inserted or fitted into each other. The second insulating plate and the second insulating plate are integrated with each other,
An insulating structure characterized in that at least the conductors arranged on both outer sides of the first insulating plate and the second insulating plate integrated in the inserted or fitted state can be insulated.

請求項１〜６のいずれかに記載の絶縁構造で異相導体間を絶縁し、バスダクトの分岐若しくは接続を行うことを特徴とするユニット。 A unit that insulates different-phase conductors with the insulating structure according to claim 1 and branches or connects bus ducts.