JP3593999B2 - Connection attachment and connection structure of insulated bus duct - Google Patents

Connection attachment and connection structure of insulated bus duct Download PDF

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Publication number
JP3593999B2
JP3593999B2 JP2001198083A JP2001198083A JP3593999B2 JP 3593999 B2 JP3593999 B2 JP 3593999B2 JP 2001198083 A JP2001198083 A JP 2001198083A JP 2001198083 A JP2001198083 A JP 2001198083A JP 3593999 B2 JP3593999 B2 JP 3593999B2
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Japan
Prior art keywords
bus duct
connection
insulated bus
connection unit
insulated
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JP2001198083A
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Japanese (ja)
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JP2003018730A (en
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孝志 中島
信春 光浪
嘉幸 田上
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Sumiden Transmission and Distribution Systems Products Corp
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Sumiden Transmission and Distribution Systems Products Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、接続ユニットを介して絶縁バスダクト同士を接続する際、絶縁バスダクトの端部において接続ユニットで覆われない領域を塞ぐのに最適な接続アタッチメントに関する。また、この接続アタッチメントを具える絶縁バスダクトの接続構造に関する。
【0002】
【従来の技術】
絶縁バスダクトとは、一般に、絶縁被覆された板状の電気導体を複数並列させてハウジング内に収納保持するもので、例えば、電気導体とこの電気導体を収納する一対のハウジング片とから形成されるものがある。図4は、従来の絶縁バスダクトの断面図、図5は、接続ユニットを介して絶縁バスダクトを接続した状態を示す上面図、図6は、そのX−X断面図である。ハウジング片57は、被覆された電気導体51を収納する凹部52と、凹部52の開口部の両側に設けられたフランジ53、54と、フランジ53、54に直交する支持部55、56とを有するもので、押し出しにより形成される。絶縁バスダクト50は、凹部52に電気導体51を収納したハウジング片57にもう一方のハウジング片57を対向させ、各ハウジング片57のフランジ53、54同士を接合させて電気導体51を両側から挟んで形成される。絶縁バスダクト50の端部は、図5に示すように電気導体51が各相間を広げられた状態でハウジング片57の端部から突出しており、ハウジング片57の端部付近の電気導体51を覆うように凹部52(図4参照)に端部曲げ板58が固定される。端部曲げ板58は、金属板を階段状に折り曲げることにより形成される。
【0003】
このような絶縁バスダクト50同士を接続するには、従来、接続ユニット60が用いられる。接続ユニット60は、並列した電気導体51に当接して導通をとる導体当板61と、導体当板61間に配置されて電気導体51の各相間を絶縁する絶縁板62とを具え、その外側を接続側板63で、その上部及び下部をカバー64により覆うことで箱状に形成される。
【0004】
【発明が解決しようとする課題】
図4に示すような一対のハウジング片の凹部に電気導体を収納し、フランジを挟んで両端側に支持部を具える形状の絶縁バスダクトは、端部に接続ユニットを装着させても、凹部52とフランジ53(54)と支持部55(56)及び端部曲げ板58とで囲まれる領域R(図6において斜線部)が接続側板やカバーで覆われない。そのため、接続ユニットは、一端側の領域Rから他端側の領域Rに向かって連通した状態であり、この領域Rから塵埃や水などが接続ユニットや絶縁バスダクトの内部に入り、塵埃によってこれらの内部の温度が上昇したり、水によって絶縁性能が低下するなどの問題がある。そこで、例えば、特開平10−210639号公報に開示された発明では、端部曲げ板の一部で領域Rを塞いでいた。図7は、従来の端部曲げ板の斜視図である。この端部曲げ板80は、領域Rを塞ぐ塞ぎ面82と、接続ユニットの接続側板に固定されるユニット固定面84と、ハウジング片の凹部の外面に固定されるハウジング固定面86とを具える階段状である。塞ぎ面82は、領域Rを塞ぐ突片81を有し、ハウジング片の凹部に平行するように配置される。ユニット固定面84は、塞ぎ面82に山折り線83を介して直交する面であり、ハウジング固定面86は、塞ぎ面82に谷折り線85を介して直交する面である。このような形状の端部曲げ板80は、一度のプレス加工で成形することができず、生産性が極めて悪いという問題がある。特に、一度のプレス加工では、折り曲げ前、同一面上にある突片81を折り曲げず、ハウジング固定面86のみを折り曲げることが極めて難しい。
【0005】
また、端部曲げ板80は、絶縁バスダクトのハウジング片の形状に適合させて形成しなければならない。例えば、突片81の高さ(図7において上下方向の長さ)や幅(同左右方向の長さ)は、それぞれハウジング片のフランジの高さ、支持部の幅に適合させる必要がある。そのため、フランジの大きさが異なるなどハウジング片の形状が異なると適用できなかったり、突片81で領域Rを塞ぎきれず隙間が生じてしまうという問題もある。
【0006】
更に、端部曲げ板80は、絶縁バスダクトの端部に固定された際、突片81に支持部を嵌め込めるように切欠き87を設けている。しかし、図4に示すハウジング片57のように支持部55、56の先端が折り曲げられるなどの複雑な形状である場合、切欠き87(図7参照)及びハウジング片57の双方を高精度に形成していなければ、切欠き87とハウジング片57との間に隙間が生じる恐れがある。加えて、ハウジング片57がこのように複雑な形状である場合、絶縁バスダクト50の端部に端部曲げ板80を固定する際の作業性が悪いという問題もある。
【0007】
そこで、本発明は、一対のハウジング片で電気導体を両側から挟んで収納する形状の絶縁バスダクトに適用でき、ハウジング片に具えるフランジと支持部とで囲まれる領域で接続ユニットに生じる開口した領域を塞ぐ接続アタッチメントを提供することを目的とする。また、このような接続アタッチメントを具えることで密閉性の高い絶縁バスダクトの接続構造を提供することを目的とする。
【0008】
【課題を解決するための手段】
本発明接続アタッチメントは、電気導体を収納する凹部と、凹部の開口部の両側に設けられたフランジと、フランジに直交する支持部とを有する一対のハウジング片で電気導体を両側から挟んで形成される絶縁バスダクトの端部において、フランジと支持部とで囲まれる領域であって絶縁バスダクトの接続ユニットで覆われない領域を塞ぐ遮蔽部と、前記遮蔽部を絶縁バスダクト側又は接続ユニット側の少なくとも一方に固定する固定部とを具えることを特徴とする。また、本発明絶縁バスダクトの接続構造は、電気導体を収納する凹部と、凹部の開口部の両側に設けられたフランジと、フランジに直交する支持部とを有する一対のハウジング片で電気導体を両側から挟んで形成される絶縁バスダクトを接続ユニットを介して接続する絶縁バスダクトの接続構造であって、絶縁バスダクトの端部においてフランジと支持部とで囲まれる領域であってバスダクトの端部において接続ユニットで覆われない領域を塞ぐ接続アタッチメントを具えることを特徴とする。
【0009】
本発明接続アタッチメントは、絶縁バスダクトの端部に配置されることで、接続ユニットに生じる開口した領域を塞ぎ、絶縁バスダクトや接続ユニットの内部に塵埃や水などが入るのを防止する。特に、本発明において遮蔽部は、端部曲げ板などと一体に形成されたものではなく、絶縁バスダクトや接続ユニットに対して着脱自在なものであるため、ハウジング片の形状が異なる絶縁バスダクトにも用いることができる。また、本発明接続アタッチメントは、絶縁バスダクトの端部に容易に配置することができ、作業性に優れる。
【0010】
このような接続アタッチメントは、一度のプレス加工できる生産性に優れた形状のものが好ましい。例えば、固定部を遮蔽部に直交させて一体に形成したものが適する。具体的には、矩形状の金属板をL字状に折り曲げたものや、T字状の金属板の水平部及び垂直部をそれぞれ内側に向かって直角に折り曲げたものなどが好ましい。前者は、一面を接続ユニットに生じる開口した領域の塞ぎ面として用い、他面を端部曲げ板や接続ユニットなどへの固定部とするとよい。後者は、前者と同様に一面を塞ぎ面として用い、残りの三面を固定部とするとよい。このとき、固定部は、絶縁バスダクト又は接続ユニットのいずれか一方の側面部の両側に対向し合う第一面と、絶縁バスダクト又は接続ユニットのいずれか一方の上下部に固定される第二面とを有する。このような接続アタッチメントは、前者において金属板の塞ぎ面となる面及び固定部となる面、後者において塞ぎ面となる面、固定部の第一面となるそれぞれの面、及び第二面となる面を同時にプレスすることで形成される。
【0011】
【発明の実施の形態】
以下、本発明の実施の形態を説明する。
図1(a)は、本発明接続アタッチメントの正面図、同(b)は、その上面図、同(c)は、その側面図、図2は、絶縁バスダクトの端部に接続ユニット及び本発明接続アタッチメントを配置した状態を示す上面図、図3はその正面図である。図中、同一符号は、同一物を示す。本発明接続アタッチメント1は、電気導体を収納する凹部と、凹部の開口部の両側に設けられたフランジと、フランジに直交する支持部とを有する一対のハウジング片で電気導体を両側から挟んで形成される絶縁バスダクトの端部において、フランジと支持部とで囲まれる領域であって絶縁バスダクトの接続ユニットで覆われない領域を塞ぐ遮蔽部2と、遮蔽部2を絶縁バスダクト側50(図2参照)及び接続ユニット60(同)側の双方に固定する固定部とを具える。以下に詳しく説明する。
【0012】
遮蔽部2は、絶縁バスダクト50(図2参照)の端部に接続ユニット60(同)を装着した際、ハウジング片57(同)の凹部とフランジと支持部及び端部曲げ板58(同)とで囲まれ、かつ接続ユニット60で覆われない領域を塞ぐことができる大きさを有する。本例では、絶縁バスダクト50の端部においてハウジング片57の両側に取り付けられる端部曲げ板58間に適合する大きさとした。固定部として、遮蔽部2の両側で対向し合うと共に接続ユニット60の側面部となる接続側板63(図2参照)に固定される第一面3と、遮蔽部2及び第一面3の双方に直交し接続ユニット60の上下部となるカバー64(同)に固定される第二面4とを具える。第一面3または第二面4は、いずれか一方が具えていればよい。本例では、より確実に固定できるように両方具えるものとした。第一面3は、接続ユニット60の接続側板63に留め付けるのに十分な大きさを有しており、留め付け用のボルト70(図3参照)が貫通される孔を有している。第二面4は、遮蔽部2と同様に端部曲げ板58間に適合した幅(図1において左右方向の長さ)を有しており、接続ユニット60のカバー64に留め付けるためのボルト69(図2、3参照)が貫通される孔を有している。
【0013】
このような本発明接続アタッチメント1は、アルミニウムなどの金属板をT字状に切り出し、プレス加工することで遮蔽部2及び固定部を一体に形成している。形成は、T字状の金属板の水平部及び垂直部をそれぞれ同じ側に直角に折り曲げることで行う。金属板の折り曲げは、折り曲げ後において内側となる側に適当な大きさの直方体状の金型を配置し、この金型に金属板の遮蔽部2、対向し合う第一面3、及び第二面4を押し付けるようにして一度にプレスすることで行う。
【0014】
上記により形成された本発明接続アタッチメント1は、絶縁バスダクト同士を接続する際、絶縁バスダクトの端部に配置するとよい。
【0015】
ここで、一般に、絶縁バスダクト50の端部は、図2に示すように絶縁被覆された絶縁被覆導体59の各相間が広げられ、末端側は電気導体51が露出した状態であり、端部曲げ板58が絶縁被覆導体59を覆うようにハウジング片57に取り付けられる。端部曲げ板58は、通常、金属板を直角に階段状に折り曲げたもので、ハウジング片57の凹部の外面に固定されるハウジング固定面Aと、接続ユニットの接続側板63に固定されるユニット固定面Cと、これら両面A及びCを連結し凹部に平行するように配置される連結面Bとを具える。連結面Bは、ハウジング固定面A及びユニット固定面Cに直交する面である。
【0016】
絶縁バスダクト50同士を接続する際は、この端部曲げ板58に接続ユニット60を固定することで行う。接続ユニット60は、従来と同様のもので、並列した電気導体51の両側に配置されて突き合わせた電気導体51に当接して導通をとるための導体当板61と、導体当板61間に配置されて電気導体51を覆うことで各相間を絶縁するための絶縁板62とを具え、その外側を接続側板63で、上部及び下部をカバー64により覆うことで箱状に形成される。これら導体当板61、絶縁板62及び接続側板63の中央部には、接続ボルト65が貫通されており、接続ボルト65を締め付けることで突き合わせた電気導体51を挟持する。このとき、適切な締付力を得るために接続側板63の表面に板バネ66、座板66’を配置している。また、接続側板63の表面には、座板66’のずれを防止するために図3に示すように座板66’の外周に沿って複数の突起67を設けている。座板66’の上面には、接続ボルト65の回り止め68を配置し、接続ボルト65が回って接続ユニット60の締め付けが緩むのを防止している。
【0017】
接続ユニット60を用いて、絶縁バスダクト50を接続するには、以下のように行うとよい。一方の絶縁バスダクト50の端部において並列した電気導体51を接続ユニット60の一端側の導体当板61間に差し込む。同様に、他方の絶縁バスダクト50の端部において並列した電気導体51を接続ユニット60の他端側の導体当板61間に差し込む。このとき、接続アタッチメント1は、絶縁バスダクト50のハウジング片57の端部において、フランジと支持部とを二辺として囲まれる領域を遮蔽部2で塞ぐように端部曲げ板58間に配置し、第一面3を接続側板63及び端部曲げ板58に、第二面4をカバー64にそれぞれボルト69、70によって固定する。そして、接続ボルト65を締め付けることで両バスダクト50を接続できる。
【0018】
本発明接続アタッチメント1は、一度のプレス加工により形成できるため、生産性に極めて優れる。また、ある一定の大きさを具えていれば、ハウジング片の形状が異なる絶縁バスダクトであっても適用することができる。更に、接続アタッチメント1を具える絶縁バスダクトの接続構造は、絶縁バスダクトや接続ユニットの内部に塵埃や水などが入ることがなく、これらに起因する絶縁バスダクトの性能低下の恐れがほとんどない。
【0019】
【発明の効果】
以上、説明したように本発明接続アタッチメントによれば、絶縁バスダクトの端部に配置することで、接続ユニットを介して絶縁バスダクトを接続する際、接続ユニットに生じる開口した領域を塞ぐことができるという優れた効果を奏し得る。このため、本発明接続アタッチメントを具える絶縁バスダクトの接続構造では、上記領域から塵埃や水などが絶縁バスダクトや接続ユニットの内部に入ることがなく、絶縁バスダクトの性能を維持することができる。
【0020】
また、本発明接続アタッチメントは、ハウジング片の形状に適合させた切欠きを設けるなどの作業がなく、一度のプレス加工によって容易に製造できるため、生産性に極めて優れる。更に、本発明接続アタッチメントは、絶縁バスダクトのハウジング片の形状がある程度異なるものであっても、適用することができる。加えて、本発明接続アタッチメントは、絶縁バスダクトの端部に容易に取り付けることができるため、接続部分を組み立てる際の作業性に優れる。
【図面の簡単な説明】
【図1】(a)は、本発明接続アタッチメントの正面図、(b)は、その上面図、(c)は、その側面図である。
【図2】絶縁バスダクトの端部に接続ユニット及び本発明接続アタッチメントを配置した状態を示す上面図である。
【図3】絶縁バスダクトの端部に接続ユニット及び本発明接続アタッチメントを配置した状態を示す正面図である。
【図4】従来の絶縁バスダクトの断面図である。
【図5】接続ユニットを介して従来の絶縁バスダクトを接続した状態を示す上面図である。
【図6】図5におけるX−X断面図である。
【図7】従来の端部曲げ板の斜視図である。
【符号の説明】
1 接続アタッチメント 2 遮蔽部 3 第一面 4 第二面
50 絶縁バスダクト 51 電気導体 52 凹部 53、54 フランジ
55、56 支持部 57 ハウジング片 58 端部曲げ板 59 絶縁被覆導体
60 接続ユニット 61 導体当板 62 絶縁板 63 接続側板 64 カバー
65 接続ボルト 66 板バネ 66’ 座板 67 突起 68 回り止め
69、70 ボルト
80 端部曲げ板 81 突片 82 塞ぎ面 83 山折り線
84 ユニット固定面 85 谷折り線 86 ハウジング固定面
87 切欠き
A ハウジング固定面 B 連結面 C ユニット固定面 R 領域
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a connection attachment most suitable for closing an area not covered by a connection unit at an end of the insulation bus duct when connecting the insulated bus ducts via the connection unit. Further, the present invention relates to a connection structure for an insulated bus duct including the connection attachment.
[0002]
[Prior art]
An insulated bus duct is generally one in which a plurality of insulated and covered plate-shaped electric conductors are housed in a housing in parallel, and are formed, for example, from an electric conductor and a pair of housing pieces that house the electric conductor. There is something. FIG. 4 is a cross-sectional view of a conventional insulated bus duct, FIG. 5 is a top view showing a state where the insulated bus duct is connected via a connection unit, and FIG. The housing piece 57 has a concave portion 52 for accommodating the covered electric conductor 51, flanges 53 and 54 provided on both sides of the opening of the concave portion 52, and support portions 55 and 56 orthogonal to the flanges 53 and 54. , Formed by extrusion. The insulating bus duct 50 is configured such that the other housing piece 57 is opposed to the housing piece 57 in which the electric conductor 51 is accommodated in the concave portion 52, and the flanges 53 and 54 of each housing piece 57 are joined to sandwich the electric conductor 51 from both sides. It is formed. As shown in FIG. 5, the end of the insulated bus duct 50 projects from the end of the housing piece 57 in a state where the electric conductors 51 are spread between the phases, and covers the electric conductor 51 near the end of the housing piece 57. End bending plate 58 is fixed to concave portion 52 (see FIG. 4). The end bent plate 58 is formed by bending a metal plate stepwise.
[0003]
In order to connect such insulated bus ducts 50, a connection unit 60 is conventionally used. The connection unit 60 includes a conductor contact plate 61 that contacts the parallel electric conductors 51 to conduct electricity, and an insulating plate 62 that is disposed between the conductor contact plates 61 and insulates the phases of the electric conductors 51 from each other. Is formed in a box shape by covering the upper and lower portions thereof with a cover 64 with a connection side plate 63.
[0004]
[Problems to be solved by the invention]
As shown in FIG. 4, an insulated bus duct having a shape in which an electric conductor is housed in a recess of a pair of housing pieces and support portions are provided at both ends with a flange interposed therebetween is provided with a recess 52 even when a connection unit is attached to an end. A region R (hatched portion in FIG. 6) surrounded by the flange 53 (54), the support portion 55 (56), and the end bent plate 58 is not covered by the connection side plate or the cover. For this reason, the connection unit is in a state of communicating from the region R on one end side to the region R on the other end side, and from this region R, dust and water enter the inside of the connection unit and the insulated bus duct, and the dust causes There are problems such as an increase in internal temperature and a decrease in insulation performance due to water. Therefore, for example, in the invention disclosed in Japanese Patent Application Laid-Open No. 10-210639, the region R is closed by a part of the end bent plate. FIG. 7 is a perspective view of a conventional end bent plate. The end bent plate 80 has a closing surface 82 for closing the region R, a unit fixing surface 84 fixed to the connection side plate of the connection unit, and a housing fixing surface 86 fixed to the outer surface of the recess of the housing piece. It is stepped. The closing surface 82 has a protruding piece 81 for closing the region R, and is arranged so as to be parallel to the concave portion of the housing piece. The unit fixing surface 84 is a surface orthogonal to the closing surface 82 via the mountain fold line 83, and the housing fixing surface 86 is a surface orthogonal to the closing surface 82 via the valley fold line 85. The end bent plate 80 having such a shape cannot be formed by a single press working, and there is a problem that productivity is extremely poor. In particular, in a single press working, it is extremely difficult to bend only the housing fixing surface 86 without bending the protruding pieces 81 on the same surface before bending.
[0005]
In addition, the end bent plate 80 must be formed so as to conform to the shape of the housing piece of the insulated bus duct. For example, the height (length in the up-down direction in FIG. 7) and width (length in the left-right direction) of the protruding piece 81 need to be adapted to the height of the flange of the housing piece and the width of the support portion, respectively. Therefore, if the shape of the housing pieces is different, such as the size of the flange is different, it cannot be applied, or there is a problem that the projection 81 cannot completely cover the region R and a gap is generated.
[0006]
Further, the end bent plate 80 is provided with a notch 87 so that the support portion can be fitted into the projecting piece 81 when fixed to the end of the insulating bus duct. However, when the support portions 55 and 56 have a complicated shape such as a bent front end like the housing piece 57 shown in FIG. 4, both the notch 87 (see FIG. 7) and the housing piece 57 are formed with high precision. Otherwise, a gap may be formed between the notch 87 and the housing piece 57. In addition, when the housing piece 57 has such a complicated shape, there is a problem that workability when fixing the end bent plate 80 to the end of the insulating bus duct 50 is poor.
[0007]
Therefore, the present invention can be applied to an insulated bus duct having a shape in which a pair of housing pieces sandwiches and holds an electric conductor from both sides, and an open area generated in a connection unit in an area surrounded by a flange provided on the housing piece and a support portion. It is an object to provide a connection attachment for closing a connection. Another object of the present invention is to provide a connection structure for an insulated bus duct having high hermeticity by providing such a connection attachment.
[0008]
[Means for Solving the Problems]
The connection attachment of the present invention is formed by sandwiching the electric conductor from both sides with a pair of housing pieces having a concave portion for accommodating the electric conductor, flanges provided on both sides of the opening of the concave portion, and a support portion orthogonal to the flange. At the end of the insulated bus duct, which is a region surrounded by the flange and the support portion, and which blocks an area not covered by the connecting unit of the insulated bus duct, and at least one of the insulated bus duct side and the connecting unit side of the shielding portion And a fixing part for fixing the fixing part. In addition, the connection structure of the insulated bus duct of the present invention includes a pair of housing pieces having a concave portion for accommodating the electric conductor, flanges provided on both sides of the opening of the concave portion, and a support portion orthogonal to the flange. A connection structure for connecting an insulated bus duct formed via a connecting unit to the insulated bus duct, wherein the connection unit is an area surrounded by a flange and a support portion at an end of the insulated bus duct and at an end of the bus duct. A connection attachment for closing an area not covered by the cover.
[0009]
The connection attachment of the present invention is disposed at the end of the insulated bus duct, thereby closing an open area formed in the connection unit and preventing dust and water from entering the insulated bus duct and the connection unit. In particular, in the present invention, the shielding portion is not formed integrally with the end bent plate or the like, but is detachable with respect to the insulated bus duct or the connection unit. Can be used. Further, the connection attachment of the present invention can be easily arranged at the end of the insulated bus duct, and is excellent in workability.
[0010]
Such a connection attachment preferably has a shape that can be pressed once and has excellent productivity. For example, one in which the fixing portion is formed so as to be orthogonal to the shielding portion and integrated therewith is suitable. Specifically, it is preferable that a rectangular metal plate is bent into an L-shape, or that a horizontal portion and a vertical portion of a T-shaped metal plate are bent at right angles toward the inside, respectively. In the former, one surface may be used as a closing surface of an open area generated in the connection unit, and the other surface may be a fixing portion to the end bent plate, the connection unit, or the like. As for the latter, one surface may be used as a closing surface, and the remaining three surfaces may be used as fixing portions, similarly to the former. At this time, the fixed portion, the first surface facing both sides of one of the side surface portion of the insulating bus duct or the connection unit, and the second surface fixed to the upper and lower one of the insulating bus duct or the connection unit Having. Such a connection attachment is a surface serving as a closing surface and a fixing portion of the metal plate in the former, a surface serving as a closing surface in the latter, a respective surface serving as a first surface of the fixing portion, and a second surface. It is formed by pressing the surfaces simultaneously.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
1 (a) is a front view of the connection attachment of the present invention, FIG. 1 (b) is a top view thereof, FIG. 1 (c) is a side view thereof, and FIG. 2 is a connection unit at the end of an insulated bus duct and the present invention. FIG. 3 is a top view showing a state where the connection attachment is arranged, and FIG. 3 is a front view thereof. In the drawings, the same reference numerals indicate the same items. The connection attachment 1 of the present invention is formed by sandwiching an electric conductor from both sides with a pair of housing pieces having a concave portion for accommodating the electric conductor, flanges provided on both sides of the opening of the concave portion, and a support portion orthogonal to the flange. At the end of the insulating bus duct to be formed, a shielding portion 2 that blocks an area surrounded by the flange and the support portion and is not covered by the connecting unit of the insulating bus duct, and the shielding portion 2 is connected to the insulating bus duct side 50 (see FIG. 2). ) And a fixing portion for fixing both to the connection unit 60 (same) side. This will be described in detail below.
[0012]
When the connection unit 60 (same) is attached to the end of the insulated bus duct 50 (see FIG. 2), the shielding portion 2 is provided with the concave portion and the flange of the housing piece 57 (same), the support portion, and the end bent plate 58 (same as above). And has a size capable of closing a region not covered by the connection unit 60. In the present embodiment, the size is adapted to fit between the end bent plates 58 attached to both ends of the housing piece 57 at the end of the insulated bus duct 50. As the fixing portion, both the first surface 3 fixed to the connection side plate 63 (see FIG. 2) facing each other on both sides of the shielding portion 2 and serving as the side surface portion of the connection unit 60, and both the shielding portion 2 and the first surface 3 And a second surface 4 fixed to a cover 64 (same as the upper and lower portions) which is orthogonal to the connecting unit 60. Either the first surface 3 or the second surface 4 may be provided. In this example, both are provided so that they can be fixed more securely. The first surface 3 is large enough to be fastened to the connection side plate 63 of the connection unit 60, and has a hole through which a fastening bolt 70 (see FIG. 3) passes. The second surface 4 has a width (length in the left-right direction in FIG. 1) adapted between the end bending plates 58 similarly to the shielding portion 2, and a bolt for fastening to the cover 64 of the connection unit 60. 69 (see FIGS. 2 and 3) has a hole through which it passes.
[0013]
In such a connection attachment 1 of the present invention, the shielding portion 2 and the fixed portion are integrally formed by cutting out a metal plate such as aluminum into a T shape and pressing the metal plate. The formation is performed by bending the horizontal part and the vertical part of the T-shaped metal plate at right angles to the same side, respectively. To fold the metal plate, a rectangular parallelepiped mold of an appropriate size is arranged on the inside side after the bending, and the metal plate shielding portion 2, the opposing first surface 3, and the second Pressing is performed by pressing the surface 4 at a time.
[0014]
When connecting the insulated bus ducts to each other, the connection attachment 1 of the present invention formed as described above may be arranged at an end of the insulated bus duct.
[0015]
Here, in general, at the end of the insulated bus duct 50, as shown in FIG. 2, the space between the respective phases of the insulated covered conductor 59 is widened, and the electric conductor 51 is exposed at the end side. A plate 58 is attached to the housing piece 57 so as to cover the insulated conductor 59. The end bent plate 58 is generally formed by bending a metal plate in a stepwise manner at a right angle, and includes a housing fixing surface A fixed to the outer surface of the concave portion of the housing piece 57 and a unit fixed to the connection side plate 63 of the connection unit. It has a fixed surface C and a connecting surface B which connects these two surfaces A and C and is arranged parallel to the recess. The connection surface B is a surface orthogonal to the housing fixing surface A and the unit fixing surface C.
[0016]
The connection between the insulated bus ducts 50 is performed by fixing the connection unit 60 to the end bent plate 58. The connection unit 60 is the same as that in the related art, and is disposed between the conductor contact plate 61 and the conductor contact plate 61 for contacting and establishing electrical continuity with the butted electric conductors 51 disposed on both sides of the parallel electric conductor 51. The electric conductor 51 is covered with an insulating plate 62 to insulate the phases from each other, and the outside is covered with a connection side plate 63 and the upper and lower parts are covered with a cover 64 to form a box. A connection bolt 65 is penetrated at the center of the conductor contact plate 61, the insulating plate 62 and the connection side plate 63, and clamps the electric conductor 51 abutted by tightening the connection bolt 65. At this time, a leaf spring 66 and a seat plate 66 'are arranged on the surface of the connection side plate 63 in order to obtain an appropriate tightening force. Further, on the surface of the connection side plate 63, a plurality of protrusions 67 are provided along the outer periphery of the seat plate 66 'as shown in FIG. 3 in order to prevent the displacement of the seat plate 66'. A detent 68 for the connection bolt 65 is arranged on the upper surface of the seat plate 66 ′ to prevent the connection bolt 65 from turning and loosening the connection unit 60.
[0017]
The connection of the insulating bus duct 50 using the connection unit 60 may be performed as follows. The electric conductors 51 arranged in parallel at the end of one of the insulating bus ducts 50 are inserted between the conductor contact plates 61 on one end of the connection unit 60. Similarly, the electric conductors 51 arranged in parallel at the end of the other insulated bus duct 50 are inserted between the conductor contact plates 61 at the other end of the connection unit 60. At this time, the connection attachment 1 is arranged between the end bent plates 58 so as to cover the area surrounded by the flange and the support part as two sides at the end of the housing piece 57 of the insulated bus duct 50 with the shield part 2, The first surface 3 is fixed to the connection side plate 63 and the end bent plate 58, and the second surface 4 is fixed to the cover 64 by bolts 69 and 70, respectively. Then, both bus ducts 50 can be connected by tightening the connection bolt 65.
[0018]
Since the connection attachment 1 of the present invention can be formed by one press working, the productivity is extremely excellent. Further, as long as it has a certain size, the present invention can be applied to insulated bus ducts having different shapes of housing pieces. Furthermore, in the connection structure of the insulated bus duct including the connection attachment 1, dust or water does not enter the inside of the insulated bus duct or the connection unit, and there is almost no possibility that the performance of the insulated bus duct is reduced due to these.
[0019]
【The invention's effect】
As described above, according to the connection attachment of the present invention, by arranging it at the end of the insulated bus duct, when connecting the insulated bus duct via the connection unit, it is possible to close the open area generated in the connection unit. Excellent effects can be achieved. For this reason, in the connection structure of the insulated bus duct provided with the connection attachment of the present invention, dust and water do not enter the inside of the insulated bus duct or the connection unit from the above-mentioned region, and the performance of the insulated bus duct can be maintained.
[0020]
Further, the connection attachment of the present invention can be easily manufactured by a single press working without any work such as providing a notch adapted to the shape of the housing piece, and therefore, is extremely excellent in productivity. Furthermore, the connection attachment of the present invention can be applied even if the shape of the housing piece of the insulated bus duct is somewhat different. In addition, since the connection attachment of the present invention can be easily attached to the end of the insulated bus duct, workability in assembling the connection portion is excellent.
[Brief description of the drawings]
1A is a front view of a connection attachment of the present invention, FIG. 1B is a top view thereof, and FIG. 1C is a side view thereof.
FIG. 2 is a top view showing a state where a connection unit and a connection attachment of the present invention are arranged at an end of an insulated bus duct.
FIG. 3 is a front view showing a state where a connection unit and a connection attachment of the present invention are arranged at an end of an insulated bus duct.
FIG. 4 is a sectional view of a conventional insulated bus duct.
FIG. 5 is a top view showing a state where a conventional insulated bus duct is connected via a connection unit.
FIG. 6 is a sectional view taken along line XX in FIG. 5;
FIG. 7 is a perspective view of a conventional end bent plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Connection attachment 2 Shielding part 3 First surface 4 Second surface 50 Insulated bus duct 51 Electric conductor 52 Depression 53, 54 Flange 55, 56 Supporting part 57 Housing piece 58 End bending plate 59 Insulated covering conductor 60 Connection unit 61 Conductor plate 62 insulating plate 63 connection side plate 64 cover 65 connection bolt 66 leaf spring 66 'seat plate 67 protrusion 68 detent 69, 70 bolt 80 end bent plate 81 protruding piece 82 closing surface 83 mountain fold line 84 unit fixing surface 85 valley fold line 86 Housing fixing surface 87 Notch A Housing fixing surface B Connecting surface C Unit fixing surface R area

Claims (2)

電気導体を収納する凹部と、凹部の開口部の両側に設けられたフランジと、フランジに直交する支持部とを有する一対のハウジング片で電気導体を両側から挟んで形成される絶縁バスダクトの端部において、フランジと支持部とで囲まれる領域であって絶縁バスダクトの接続ユニットで覆われない領域を塞ぐ遮蔽部と、前記遮蔽部を絶縁バスダクト側又は接続ユニット側の少なくとも一方に固定する固定部とを具え、
固定部は遮蔽部に直交させて一体に形成され、
この固定部は、絶縁バスダクト又は接続ユニットのいずれか一方の側面部にボルトの締め付けで固定される第一面と、絶縁バスダクト又は接続ユニットのいずれか一方の上下部にボルトの締め付けで固定される第二面とを有することを特徴とする接続アタッチメント。
End of an insulated bus duct formed by sandwiching the electric conductor from both sides with a pair of housing pieces having a concave portion for accommodating the electric conductor, flanges provided on both sides of the opening of the concave portion, and a support portion orthogonal to the flange In, a shield portion that is a region surrounded by the flange and the support portion and that is not covered by the connection unit of the insulated bus duct, and a fixing portion that fixes the shield portion to at least one of the insulated bus duct side or the connection unit side. the equipped,
The fixing part is formed integrally with the shielding part perpendicularly,
This fixing portion is fixed to the side surface of one of the insulating bus duct and the connection unit by tightening a bolt, and is fixed to the upper and lower portions of either the insulating bus duct or the connection unit by tightening a bolt. connecting attachment, characterized in Rukoto of having a the second surface.
電気導体を収納する凹部と、凹部の開口部の両側に設けられたフランジと、フランジに直交する支持部とを有する一対のハウジング片で電気導体を両側から挟んで形成される絶縁バスダクトを接続ユニットを介して接続する絶縁バスダクトの接続構造であって、A unit for connecting an insulated bus duct formed by sandwiching an electric conductor from both sides with a pair of housing pieces having a concave portion for accommodating the electric conductor, flanges provided on both sides of the opening of the concave portion, and a support portion orthogonal to the flange. Connection structure of an insulated bus duct connected via
請求項1に記載の接続アタッチメントにより、絶縁バスダクトの端部においてフランジと支持部とで囲まれる領域であって接続ユニットで覆われない領域を遮蔽部で塞ぎ、  With the connection attachment according to claim 1, a region that is a region surrounded by the flange and the support portion at the end of the insulated bus duct and that is not covered by the connection unit is closed by a shielding portion,
第一面を接続ユニットの接続側板および絶縁バスダクトの端部曲げ板にボルトで締め付けて接続し、  Connect the first surface to the connection side plate of the connection unit and the end bent plate of the insulated bus duct with bolts,
第二面を接続ユニットのカバーにボルトで締め付けて接続することを特徴とする絶縁バスダクトの接続構造。  A connection structure for an insulated bus duct, wherein the second surface is connected to a cover of the connection unit by bolting.
JP2001198083A 2001-06-29 2001-06-29 Connection attachment and connection structure of insulated bus duct Expired - Fee Related JP3593999B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001198083A JP3593999B2 (en) 2001-06-29 2001-06-29 Connection attachment and connection structure of insulated bus duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001198083A JP3593999B2 (en) 2001-06-29 2001-06-29 Connection attachment and connection structure of insulated bus duct

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Publication number Priority date Publication date Assignee Title
KR100764596B1 (en) * 2006-05-30 2007-10-08 주식회사 신화기전 A protecting cover for connecting bus bar
CN102842877B (en) * 2012-07-30 2015-10-28 江苏万奇电器集团有限公司 A kind of dock multisplit wire trough connection device with compensating current-carrying cross section
CN103532064B (en) * 2013-10-28 2017-01-18 深圳市吉祥天电力设备有限公司 Low-voltage hollow bus duct
CN104020324A (en) * 2014-06-17 2014-09-03 国家电网公司 Test tool for wire soft shield cover
KR102175332B1 (en) * 2020-05-07 2020-11-06 주식회사 근우 Busbar connecting apparatus

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