JP2009060757A - Insulated bus duct and manufacturing method for insulated bus bar used for same - Google Patents

Insulated bus duct and manufacturing method for insulated bus bar used for same Download PDF

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JP2009060757A
JP2009060757A JP2007227841A JP2007227841A JP2009060757A JP 2009060757 A JP2009060757 A JP 2009060757A JP 2007227841 A JP2007227841 A JP 2007227841A JP 2007227841 A JP2007227841 A JP 2007227841A JP 2009060757 A JP2009060757 A JP 2009060757A
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bus bar
duct
insulating
insulated bus
opening
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Megumi Ninomiya
恵 二宮
Kazushi Yamamoto
一志 山本
Tsutomu Kato
勉 加藤
Zenji Okazaki
善次 岡崎
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Furukawa Electric Co Ltd
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Furukawa Electric Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/005—Laminated bus-bars
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/10—Cooling

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulated bus duct having not generating a clearance between an insulated bus bar and a duct side plate and having an excellent heat dissipation property. <P>SOLUTION: In the insulated bus duct, a plurality of insulated bus bars 1 applying insulating coating 3 to band plate-shaped bus bars 2 are laminated, duct side plates 4 are abutted on both sides in the laminating direction thereof and the two duct side plates 4 are clamped by clamping members 5 and 6 at specified intervals in the longitudinal direction on both sides in the cross direction. In the insulated bus duct, openings 11 are formed at the specified intervals in the longitudinal direction to intermediate sections in the cross direction of the band plate-shaped bus bars 1, and boltholes 12 are formed in sections of the openings 11 for the insulating coating 3 while insulating treatment is carried out not to expose the inner peripheral surfaces of the openings 11. In the insulated bus duct, the boltholes 13 are formed at locations corresponding to the boltholes 12 for the insulating coatings 3 even on the duct side plates 4, and the insulated bus bars 1 and the intermediate sections in the cross direction of the duct side plates 4 are clamped collectively by through-bolts 14 inserted into these boltholes 12 and 13 and nuts 15. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、主にビルや工場などで低圧大容量幹線として使用される絶縁バスダクトと、それに用いる絶縁バスバー及びその製造方法に関するものである。   The present invention relates to an insulated bus duct used as a low-voltage large-capacity trunk line mainly in buildings and factories, an insulated bus bar used therefor, and a method for manufacturing the same.

従来の絶縁バスダクトの一例を図４に示す。図において、１は帯板状バスバー２に絶縁被覆３を施した絶縁バスバーである。絶縁バスダクトは、このような絶縁バスバー１を複数積層し、積層方向の両側に前記絶縁バスバー１より幅の広いダクト側板４、４を当接させ、この２枚のダクト側板４、４を、幅方向の両側の前記絶縁バスバー１の両側縁より外側の位置で、長手方向に所定の間隔をあけてボルト５とナット６（締め付け部材）により締め付けた構造となっている。   An example of a conventional insulated bus duct is shown in FIG. In the figure, reference numeral 1 denotes an insulating bus bar in which a strip-like bus bar 2 is provided with an insulating coating 3. The insulated bus duct is formed by laminating a plurality of such insulated bus bars 1 and bringing the duct side plates 4 and 4 wider than the insulated bus bar 1 into contact with both sides in the laminating direction. It is structured to be tightened with bolts 5 and nuts 6 (tightening members) at predetermined positions in the longitudinal direction at positions outside the both side edges of the insulating bus bar 1 on both sides in the direction.

図示の例は、ダクト側板４、４の幅方向の両側を断面略コ字形に屈曲成形し、その部分が互いに反対向きになるように組み合わせてボルト５とナット６で締め付ける構造であるが、ダクト側板の幅方向の両側を断面略コ字形に屈曲成形することなく、ダクト側板の間にスペーサを介在させてボルトとナットで締め付ける構造のものも公知である（特許文献１参照）。   The illustrated example is a structure in which both sides in the width direction of the duct side plates 4 and 4 are bent to have a substantially U-shaped cross section, and the parts are combined so as to be opposite to each other and tightened with bolts 5 and nuts 6. There is also a known structure in which a spacer is interposed between duct side plates and tightened with bolts and nuts without bending both sides of the side plate in the width direction into a substantially U-shaped cross section (see Patent Document 1).

実開昭６３−１７２２２２号公報Japanese Utility Model Publication No. 63-172222

絶縁バスダクトの場合は、ボルト５とナット６による締め付けで、各絶縁バスバー１及びダクト側板４を密接させ、通電により絶縁バスバー１で発生した熱をダクト側板４に伝えて、ダクト側板４から外部に放熱している。このため、絶縁バスバー１とダクト側板４が密接していないと、通電による発熱を十分放熱できず、バスダクトの通電時の温度規格を満足できなくなる可能性がある。   In the case of an insulated bus duct, each insulated bus bar 1 and the duct side plate 4 are brought into close contact with each other by tightening with bolts 5 and nuts 6, and heat generated in the insulated bus bar 1 is transmitted to the duct side plate 4 by energization. Dissipates heat. For this reason, if the insulated bus bar 1 and the duct side plate 4 are not in close contact with each other, heat generated by energization cannot be sufficiently dissipated, and the temperature standard during energization of the bus duct may not be satisfied.

しかし、バスバー２、絶縁被覆３、ダクト側板４にはそれぞれ、許容される寸法公差があるため、各部材の寸法公差内の寸法の組み合わせによっては、図５のように、ダクト側板４が外側へ膨らんでしまうことがある。このような状態になると、絶縁バスバー１とダクト側板４の間にわずかではあるが隙間Ｓが発生し、この隙間Ｓが断熱層となって、絶縁バスバー１からダクト側板４への伝熱性が著しく低下し、異常温度上昇が発生するおそれがある。   However, since the bus bar 2, the insulation coating 3, and the duct side plate 4 each have an allowable dimensional tolerance, depending on the combination of the dimensions within the dimensional tolerance of each member, the duct side plate 4 moves outward as shown in FIG. May swell. In such a state, a slight gap S is generated between the insulating bus bar 1 and the duct side plate 4, and this gap S becomes a heat insulating layer, and the heat transfer from the insulating bus bar 1 to the duct side plate 4 is remarkably increased. The temperature may decrease and an abnormal temperature rise may occur.

本発明の目的は、上記のような問題点に鑑み、絶縁バスバーとダクト側板の間に隙間が発生するおそれのない絶縁バスダクトを提供することにある。   In view of the above problems, an object of the present invention is to provide an insulated bus duct that does not cause a gap between the insulated bus bar and the duct side plate.

この目的を達成するため本発明は、帯板状バスバーに絶縁被覆を施してなる絶縁バスバーを複数積層し、積層方向の両側に前記絶縁バスバーより幅の広いダクト側板を当接させ、この２枚のダクト側板を、前記絶縁バスバーの両側縁より外側の位置で、長手方向に所定の間隔をあけて両側とも締め付け部材により締め付けてなる絶縁バスダクトにおいて、前記帯板状バスバーの幅方向中間部に長手方向に所定の間隔をあけて開口を形成し、前記絶縁被覆の前記開口内に位置する部分にボルト穴を形成すると共に前記開口の内周面が露出しないように絶縁処理を施し、さらに前記ダクト側板にも前記絶縁被覆のボルト穴に相当する位置にボルト穴を形成し、これらのボルト穴に挿通した通しボルトとナットで絶縁バスバー及びダクト側板の幅方向中間部を一括して締め付けたことを特徴とするものである。   In order to achieve this object, the present invention has a structure in which a plurality of insulating bus bars each having an insulating coating applied to a strip-shaped bus bar are laminated, and duct side plates wider than the insulating bus bars are brought into contact with both sides in the laminating direction. In the insulated bus duct, in which the duct side plate is tightened at both sides by a fastening member at a position outside the both side edges of the insulated bus bar at a predetermined interval in the longitudinal direction, the duct side plate is elongated in the middle in the width direction of the strip plate bus bar. An opening is formed at a predetermined interval in the direction, a bolt hole is formed in a portion of the insulating coating located in the opening, an insulation treatment is performed so that an inner peripheral surface of the opening is not exposed, and the duct is further formed. Bolt holes are also formed on the side plates at positions corresponding to the bolt holes in the insulation coating, and the width of the insulating busbar and duct side plates is made with through bolts and nuts inserted into these bolt holes. Is characterized in that the clamping collectively an intermediate portion.

本発明に係る絶縁バスダクトは、前記絶縁バスバー及びダクト側板の幅方向中間部の締め付け部が、ダクト側板の幅方向両側の締め付け部と長手方向の同じ位置にあることが好ましい。   In the insulated bus duct according to the present invention, it is preferable that the tightening portions in the intermediate portion in the width direction of the insulating bus bar and the duct side plate are in the same position in the longitudinal direction as the tightening portions on both sides in the width direction of the duct side plate.

また、本発明に係る絶縁バスダクトは、前記絶縁バスバー及びダクト側板の幅方向中間部が、前記帯板状バスバーの開口の内径より大きい外径を有する、バネ性を有する部材の反発力を用いて締め付けられていること（例えばワッシャ等のバネ性を有する部材を介して、通しボルトとナットにより締め付けられていること）が好ましい。バネ性を有する部材としては、リング状ワッシャの他、板バネその他の公知の部材を用いることができる。   In addition, the insulated bus duct according to the present invention uses the repulsive force of a member having a spring property, in which an intermediate portion in the width direction of the insulated bus bar and the duct side plate has an outer diameter larger than the inner diameter of the opening of the strip plate bus bar. It is preferable that it is tightened (for example, it is tightened by a through bolt and a nut through a member having spring properties such as a washer). As the member having the spring property, a known member such as a leaf spring can be used in addition to the ring washer.

また、本発明に係る絶縁バスダクトに用いる絶縁バスバーの製造方法は、帯板状バスバーの幅方向中間部に長手方向に所定の間隔をあけて開口を形成した後、この帯板状バスバーに樹脂の押出成形により絶縁被覆を施すと共に、前記開口内で両面の絶縁被覆を密着させ、前記開口内の両面の絶縁被覆が密着した部分にボルト穴を形成することを特徴とするものである。   In addition, in the method for manufacturing an insulating bus bar used for the insulating bus duct according to the present invention, an opening is formed at a predetermined interval in the longitudinal direction in the middle portion in the width direction of the strip plate bus bar, and then a resin is applied to the strip plate bus bar. Insulating coating is applied by extrusion molding, both sides of the insulating coating are brought into close contact with each other in the opening, and a bolt hole is formed in a portion where the insulating coating on both sides in the opening is in close contact.

本発明によれば、積層された絶縁バスバー及びダクト側板の幅方向中間部に通しボルトを挿通し、ナットで締め付けたので、絶縁バスバーとダクト側板の間に隙間が発生するおそれがなくなり、各部材の寸法公差にかかわらず、絶縁バスバーとダクト側板を密接した状態に保つことができる。したがって絶縁バスバーで発生した熱を確実にダクト側板に伝達して良好な放熱状態を得ることができ、異常温度上昇を防止することができる。   According to the present invention, the through bolts are inserted through the intermediate portions in the width direction of the laminated insulating bus bars and the duct side plates and tightened with the nuts, so there is no possibility that a gap is generated between the insulating bus bars and the duct side plates. Regardless of dimensional tolerances, the insulated bus bar and duct side plate can be kept in close contact. Therefore, heat generated in the insulated bus bar can be reliably transmitted to the duct side plate to obtain a good heat dissipation state, and an abnormal temperature rise can be prevented.

また、絶縁バスバーとダクト側板間の隙間は、ダクト側板の両側を締め付け部材で締め付けたときに両側の締め付け部材の間で発生しやすいので、絶縁バスバー及びダクト側板の幅方向中間部の締め付け部を、ダクト側板の幅方向の両側の締め付け部と長手方向の同じ位置に位置させると、より効果的に絶縁バスバーとダクト側板間の隙間の発生を防止できる。   In addition, the gap between the insulating bus bar and the duct side plate is likely to occur between the fastening members on both sides of the duct side plate with the fastening members. If the tightening portions on both sides in the width direction of the duct side plate are positioned at the same position in the longitudinal direction, it is possible to more effectively prevent the occurrence of a gap between the insulating bus bar and the duct side plate.

また、絶縁バスバー及びダクト側板の幅方向中間部を、帯板状バスバーの開口の内径より大きい外径を有するワッシャを介して、通しボルトとナットにより締め付けることにより、より確実に締め付け力を作用させ、絶縁バスバーとダクト側板間の隙間の発生を防止できる。   In addition, by tightening the intermediate portion in the width direction of the insulating bus bar and duct side plate with a through bolt and nut through a washer having an outer diameter larger than the inner diameter of the opening of the strip plate bus bar, the tightening force can be applied more reliably. In addition, the generation of a gap between the insulating bus bar and the duct side plate can be prevented.

また、本発明の製造方法によれば、帯板状バスバーの開口が絶縁され、開口内の絶縁被覆にボルト穴が形成された絶縁バスバーを容易に効率よく製造することができる。   Further, according to the manufacturing method of the present invention, it is possible to easily and efficiently manufacture an insulating bus bar in which the opening of the strip plate bus bar is insulated and the bolt hole is formed in the insulating coating in the opening.

＜実施形態１＞ 図１は本発明の一実施形態を示す。図１において、先に説明した図４と同一部分には同一符号を付してあるので、重複する説明は省略する。この絶縁バスダクトで使用する絶縁バスバー１は、帯板状バスバー２の幅方向中間部に長手方向に所定の間隔をあけて開口１１を形成し、この開口１１内で両面の絶縁被覆３、３を接合して開口１１の内周面を絶縁すると共に、開口１１の中心部の接合された絶縁被覆３にボルト穴１２を形成したものである。また、ダクト側板４にも絶縁被覆３のボルト穴１２に相当する位置にボルト穴１３を形成してある。 Embodiment 1 FIG. 1 shows an embodiment of the present invention. In FIG. 1, the same parts as those in FIG. 4 described above are denoted by the same reference numerals, and redundant description is omitted. An insulating bus bar 1 used in the insulating bus duct has an opening 11 formed at a predetermined interval in the longitudinal direction at an intermediate portion in the width direction of the strip plate bus bar 2, and the insulating coatings 3 and 3 on both sides are formed in the opening 11. In addition to insulating the inner peripheral surface of the opening 11, a bolt hole 12 is formed in the insulating coating 3 joined at the center of the opening 11. The duct side plate 4 is also formed with bolt holes 13 at positions corresponding to the bolt holes 12 of the insulating coating 3.

この絶縁バスダクトは、上記のように形成された絶縁バスバー１のボルト穴１２及びダクト側板４のボルト穴１３に通しボルト１４を挿通し、ナット１５を螺着して、３枚の絶縁バスバー１と２枚のダクト側板４を一括して締め付けたものである。このようにすると、絶縁バスバー１とダクト側板４の間に隙間が発生するおそれがなくなり、各部材の寸法公差にかかわらず、絶縁バスバー１とダクト側板４を密接した状態に保つことができる。したがって絶縁バスバー１で発生した熱を確実にダクト側板４に伝達して良好な放熱状態を得ることができ、異常温度上昇を防止することができる。   In this insulated bus duct, through the bolts 12 of the insulated bus bar 1 and the bolt holes 13 of the duct side plate 4 formed as described above, the through bolts 14 are inserted, and the nuts 15 are screwed. Two duct side plates 4 are tightened together. If it does in this way, there will be no possibility that a crevice will be generated between insulation bus bar 1 and duct side board 4, and insulation bus bar 1 and duct side board 4 can be kept in close contact irrespective of the dimensional tolerance of each member. Therefore, heat generated in the insulating bus bar 1 can be reliably transmitted to the duct side plate 4 to obtain a good heat dissipation state, and an abnormal temperature rise can be prevented.

なお、通しボルト１４の頭部１４ａと一方のダクト側板４の間及びナット１５と他方のダクト側板４の間には、前記帯板状バスバー２の開口１１の内径より大きい外径を有するワッシャ及び皿ばね１６を介在させてある。このようにすれば、通しボルト１４とナット１５による締付け力を確実に絶縁バスバー１及びダクト側板４に作用させることができる。   A washer having an outer diameter larger than the inner diameter of the opening 11 of the strip plate bus bar 2 between the head 14a of the through bolt 14 and the one duct side plate 4 and between the nut 15 and the other duct side plate 4; A disc spring 16 is interposed. In this way, the tightening force by the through bolt 14 and the nut 15 can be reliably applied to the insulating bus bar 1 and the duct side plate 4.

また、通しボルト１４とナット１５による絶縁バスバー１及びダクト側板４の幅方向中間部の締め付け部は、ボルト５とナット６によるダクト側板４の幅方向の両側の締め付け部と長手方向の同じ位置に位置させてある。図５のようなダクト側板４の膨らみは、特にダクト側板４の両側をボルト５とナット６で締め付けた位置で発生しやすいので、通しボルト１４とナット１５による幅方向中間部の締め付け部を、ボルト５とナット６による幅方向両側の締め付け部と長手方向の同じ位置に位置させることは、ダクト側板４の膨らみを防止するのにきわめて有効である。   Further, the tightening portion of the intermediate bus bar 1 and the duct side plate 4 in the width direction between the through bolt 14 and the nut 15 is located at the same position in the longitudinal direction as the tightening portion on both sides in the width direction of the duct side plate 4 by the bolt 5 and the nut 6. It is located. Since the swelling of the duct side plate 4 as shown in FIG. 5 is likely to occur particularly at the positions where both sides of the duct side plate 4 are tightened with the bolt 5 and the nut 6, the tightening portion at the intermediate portion in the width direction by the through bolt 14 and the nut 15 is Positioning the bolt 5 and the nut 6 at the same position in the longitudinal direction as the fastening portions on both sides in the width direction is extremely effective in preventing the duct side plate 4 from bulging.

次に、この実施形態で使用した、所定の間隔でボルト穴１２を形成した絶縁バスバー１の好ましい製造方法を、図２を参照して説明する。まず、（Ａ）のように帯板状バスバー２に長手方向に所定の間隔をあけて開口１１を形成する。開口１１の内径は前記通しボルト１４の軸部の直径の３〜１０倍程度とする。次に、この帯板状バスバー２を樹脂押出機に通して、（Ｂ）、（Ｃ）に示すように帯板状バスバー２に絶縁被覆３を被せる。絶縁被覆３は、帯板状バスバー２の周りに樹脂を筒状に押出成形し、筒状樹脂の内部を減圧状態に保って筒状樹脂を帯板状バスバー２の外周面に密接させることにより形成するので、両面の絶縁被覆３、３は押出直後の軟らかいうちに（Ｃ）のように開口１１内で自然に融着する。次に、（Ｄ）、（Ｅ）に示すように、開口１１の中心部の絶縁被覆３の融着部分にボルト穴１２を形成する。以上の工程により、帯板状バスバー２の開口１１の内周面が絶縁され、開口１１内の絶縁被覆３にボルト穴１２が形成された絶縁バスバー１を、容易に効率よく製造することができる。   Next, a preferred manufacturing method of the insulated bus bar 1 used in this embodiment and having the bolt holes 12 formed at predetermined intervals will be described with reference to FIG. First, as shown in (A), the opening 11 is formed in the strip-like bus bar 2 with a predetermined interval in the longitudinal direction. The inner diameter of the opening 11 is about 3 to 10 times the diameter of the shaft portion of the through bolt 14. Next, the strip plate bus bar 2 is passed through a resin extruder, and the strip plate bus bar 2 is covered with an insulating coating 3 as shown in FIGS. The insulation coating 3 is formed by extruding resin around the strip-shaped bus bar 2 in a cylindrical shape, keeping the inside of the cylindrical resin in a reduced pressure state, and bringing the cylindrical resin into close contact with the outer peripheral surface of the strip-shaped bus bar 2. Since they are formed, the insulating coatings 3 and 3 on both sides are naturally fused in the opening 11 as shown in FIG. Next, as shown to (D) and (E), the bolt hole 12 is formed in the fusion | fusion part of the insulation coating 3 of the center part of the opening 11. FIG. Through the above steps, the insulating bus bar 1 in which the inner peripheral surface of the opening 11 of the strip-shaped bus bar 2 is insulated and the bolt hole 12 is formed in the insulating coating 3 in the opening 11 can be easily and efficiently manufactured. .

＜実施形態２＞ 図３は本発明の他の実施形態を示す。この実施形態が実施形態１と異なる点は、ダクト側板４の幅方向の両側を、断面略コ字形に屈曲成形することなく、平板状のままにして、その間に四角筒形のスペーサ１７を介在させてボルト５とナット６で締め付けた点と、帯板状バスバー２の絶縁被覆３を、押出成形ではなく、絶縁シート巻きにより形成した点である。 <Embodiment 2> FIG. 3 shows another embodiment of the present invention. This embodiment is different from the first embodiment in that both sides of the duct side plate 4 in the width direction are left flat without being bent into a substantially U-shaped cross section, and a square cylindrical spacer 17 is interposed therebetween. The bolts 5 and nuts 6 are tightened and the insulation coating 3 of the strip-like bus bar 2 is formed by winding an insulating sheet, not by extrusion.

絶縁被覆３を絶縁シート巻きにより形成した場合は、帯板状バスバー２の開口１１内に位置する両面の絶縁被覆３にボルト穴１２を形成した後、開口１１内で両面の絶縁被覆３を接着剤で接着するか、開口１１内で両面の絶縁被覆３のボルト穴１２の縁を絶縁テープ又は環状封止部材１８により開かないように封止するとよい。上記以外の構成は、図１に示した実施形態１と同じであるので、同一部分には同一符号を付して説明を省略する。このような構成でも実施形態１と同様の効果を得ることができる。
なお、本発明では、絶縁バスバーとして帯板状のものを用いるが、帯板状のバスバーであれば、断面として、長方形（長方形断面の角部がＲ状のもの）の他、正方形断面の角部がＲ状のもの、長方形、正方形などの断面形状のものを適用することができる。 When the insulating coating 3 is formed by winding an insulating sheet, after the bolt holes 12 are formed in the insulating coating 3 on both sides located in the opening 11 of the strip-shaped bus bar 2, the insulating coating 3 on both sides is bonded in the opening 11. It is good to seal so that the edge of the bolt hole 12 of the insulation coating 3 of both surfaces may not be opened by the insulating tape or the annular sealing member 18 in the opening 11 in the opening 11. Since the configuration other than the above is the same as that of the first embodiment shown in FIG. 1, the same parts are denoted by the same reference numerals and the description thereof is omitted. Even with such a configuration, the same effects as those of the first embodiment can be obtained.
In the present invention, a strip-shaped bus bar is used as the insulated bus bar. However, in the case of a strip-shaped bus bar, the cross-section has a rectangular shape (the corner of the rectangular cross-section has an R-shape), and a square cross-section corner. A portion having an R shape, a cross-sectional shape such as a rectangle, or a square can be used.

本発明に係る絶縁バスダクトの一実施形態を示す、（Ａ）は側面図、（Ｂ）は（Ａ）のＢ−Ｂ線断面図。BRIEF DESCRIPTION OF THE DRAWINGS One Embodiment of the insulated bus duct which concerns on this invention is shown, (A) is a side view, (B) is the BB sectional drawing of (A). 本発明に係る絶縁バスバーの製造方法の一実施形態を示すもので、（Ａ）は所定の間隔で開口を形成した帯板状バスバーの側面図、（Ｂ）は（Ａ）の絶縁バスバーに押出成形により絶縁被覆を形成した絶縁バスバーの側面図、（Ｃ）は（Ｂ）のＣ−Ｃ線拡大断面図、（Ｄ）は開口内の絶縁被覆にボルト穴を形成した絶縁バスバーの側面図、（Ｅ）は（Ｄ）のＥ−Ｅ線拡大断面図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a method for producing an insulated bus bar according to the present invention, in which (A) is a side view of a strip-shaped bus bar having openings formed at predetermined intervals, and (B) is extruded to the insulated bus bar of (A). Side view of insulating bus bar in which insulating coating is formed by molding, (C) is an enlarged sectional view taken along line CC of (B), (D) is a side view of an insulating bus bar in which bolt holes are formed in the insulating coating in the opening, (E) is the EE line expanded sectional view of (D). 本発明に係る絶縁バスダクトの他の実施形態を示す、（Ａ）は側面図、（Ｂ）は（Ａ）のＢ−Ｂ線断面図。The other embodiment of the insulated bus duct which concerns on this invention is shown, (A) is a side view, (B) is the BB sectional drawing of (A). 従来の絶縁バスダクトの一例を示す、（Ａ）は側面図、（Ｂ）は（Ａ）のＢ−Ｂ線断面図。An example of the conventional insulated bus duct is shown, (A) is a side view, (B) is a cross-sectional view taken along line BB of (A). 図４の絶縁バスダクトの問題点を示す断面図。Sectional drawing which shows the problem of the insulated bus duct of FIG.

符号の説明Explanation of symbols

１：絶縁バスバー、２：バスバー、３：絶縁被覆、４：ダクト側板、５：ボルト、
６：ナット、１１：開口、１２：絶縁被覆のボルト穴、１３：ダクト側板のボルト穴、
１４：通しボルト、１５：ナット、１６：ワッシャ及び皿ばね、１７：スペーサ、
１８：環状封止部材 1: Insulated bus bar, 2: Bus bar, 3: Insulation coating, 4: Duct side plate, 5: Bolt,
6: Nut, 11: Opening, 12: Bolt hole of insulation coating, 13: Bolt hole of duct side plate,
14: through bolt, 15: nut, 16: washer and disc spring, 17: spacer,
18: Annular sealing member

Claims (4)

帯板状バスバーに絶縁被覆を施してなる絶縁バスバーを複数積層し、積層方向の両側に前記絶縁バスバーより幅の広いダクト側板を当接させ、この２枚のダクト側板を、前記絶縁バスバーの両側縁より外側の位置で、長手方向に所定の間隔をあけて両側とも締め付け部材により締め付けてなる絶縁バスダクトにおいて、
前記帯板状バスバーの幅方向中間部に長手方向に所定の間隔をあけて開口を形成し、前記絶縁被覆の前記開口内に位置する部分にボルト穴を形成すると共に前記開口の内周面が露出しないように絶縁処理を施し、さらに前記ダクト側板にも前記絶縁被覆のボルト穴に相当する位置にボルト穴を形成し、これらのボルト穴に挿通した通しボルトとナットで絶縁バスバー及びダクト側板の幅方向中間部を一括して締め付けたことを特徴とする絶縁バスダクト。 A plurality of insulating bus bars each having an insulating coating applied to a strip-shaped bus bar are laminated, and a duct side plate having a width wider than the insulating bus bar is brought into contact with both sides in the stacking direction. In an insulated bus duct that is tightened by a tightening member on both sides at a predetermined interval in the longitudinal direction at a position outside the edge,
An opening is formed in the middle portion in the width direction of the strip-shaped bus bar at a predetermined interval in the longitudinal direction, a bolt hole is formed in a portion located in the opening of the insulating coating, and an inner peripheral surface of the opening is Insulation treatment is performed so as not to be exposed, and bolt holes are also formed in the duct side plate at positions corresponding to the bolt holes of the insulation coating. Insulated bus duct characterized by tightening the middle part in the width direction at once. 前記絶縁バスバー及びダクト側板の幅方向中間部の締め付け部が、ダクト側板の幅方向両側の締め付け部と長手方向の同じ位置にあることを特徴とする請求項１記載の絶縁バスダクト。   2. The insulated bus duct according to claim 1, wherein a tightening portion in a width direction intermediate portion of the insulating bus bar and the duct side plate is in the same position in a longitudinal direction as a tightening portion on both sides in the width direction of the duct side plate. 前記絶縁バスバー及びダクト側板の幅方向中間部は、前記帯板状バスバーの開口の内径より大きい外径を有するバネ弾性を有する部材の反発力により締め付けられていることを特徴とする請求項１記載の絶縁バスダクト。   The width direction intermediate part of the said insulation bus-bar and a duct side board is clamp | tightened by the repulsive force of the member which has a spring elasticity which has an outer diameter larger than the internal diameter of the opening of the said strip-plate-like bus bar. Insulated bus duct. 請求項１記載の絶縁バスダクトに用いる絶縁バスバーの製造方法であって、帯板状バスバーの幅方向中間部に長手方向に所定の間隔をあけて開口を形成した後、この帯板状バスバーに樹脂の押出成形により絶縁被覆を施すと共に、前記開口内で両面の絶縁被覆を密着させ、前記開口内の両面の絶縁被覆が密着した部分にボルト穴を形成することを特徴とする絶縁バスバーの製造方法。   A method for producing an insulated bus bar for use in an insulated bus duct according to claim 1, wherein an opening is formed at a predetermined interval in the longitudinal direction in the widthwise intermediate portion of the strip plate bus bar, and then a resin is applied to the strip plate bus bar. An insulating bus bar is manufactured by applying an insulating coating by extrusion molding, and intimately adhering both insulating coatings in the opening, and forming a bolt hole in a portion where the insulating coating on both surfaces in the opening is in close contact .
JP2007227841A 2007-09-03 2007-09-03 Insulated bus duct and manufacturing method for insulated bus bar used for same Pending JP2009060757A (en)

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Cited By (12)

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Publication number Priority date Publication date Assignee Title
CN103036184A (en) * 2012-11-30 2013-04-10 广东天富电气集团有限公司 Dense-type bus duct
CN103236665A (en) * 2013-05-06 2013-08-07 陈旭云 Shell structure of intensive bus duct
CN103311859A (en) * 2013-04-07 2013-09-18 陈春 Novel energy-saving bus duct
WO2014125896A1 (en) 2013-02-12 2014-08-21 日本軽金属株式会社 Aluminum conductive member and method for producing same
WO2014192869A1 (en) 2013-05-29 2014-12-04 日本軽金属株式会社 Conducting member
CN104269802A (en) * 2014-09-20 2015-01-07 常州市武进南夏墅苏南锻造有限公司 Tight bus duct
CN104300469A (en) * 2014-10-30 2015-01-21 向荣集团有限公司 Intensive double-spliced bus duct shell
CN105244829A (en) * 2015-11-10 2016-01-13 鼎圣电气有限公司 Low-voltage busway with rapid radiating function
CN105576577A (en) * 2014-10-17 2016-05-11 向荣集团有限公司 Insulation structure between intensive bus duct busbar and U-shaped material
CN106558859A (en) * 2015-09-26 2017-04-05 江苏向荣电气有限公司 A kind of assembling bus duct
ITUB20159292A1 (en) * 2015-12-16 2017-06-16 Bticino Spa Barred duct.
US20210036498A1 (en) * 2018-04-17 2021-02-04 Abb Schweiz Ag Laminated busbar and arrangement comprising laminated busbars

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103036184A (en) * 2012-11-30 2013-04-10 广东天富电气集团有限公司 Dense-type bus duct
WO2014125896A1 (en) 2013-02-12 2014-08-21 日本軽金属株式会社 Aluminum conductive member and method for producing same
US9828689B2 (en) 2013-02-12 2017-11-28 Nippon Light Metal Company, Ltd. Aluminum conductive member and method for producing same
CN103311859A (en) * 2013-04-07 2013-09-18 陈春 Novel energy-saving bus duct
CN103236665A (en) * 2013-05-06 2013-08-07 陈旭云 Shell structure of intensive bus duct
US9825377B2 (en) 2013-05-29 2017-11-21 Nippon Light Metal Company, Ltd. Conducting member
WO2014192869A1 (en) 2013-05-29 2014-12-04 日本軽金属株式会社 Conducting member
KR20150126722A (en) 2013-05-29 2015-11-12 니폰게이긴조쿠가부시키가이샤 Conducting member
CN104269802A (en) * 2014-09-20 2015-01-07 常州市武进南夏墅苏南锻造有限公司 Tight bus duct
CN105576577A (en) * 2014-10-17 2016-05-11 向荣集团有限公司 Insulation structure between intensive bus duct busbar and U-shaped material
CN104300469A (en) * 2014-10-30 2015-01-21 向荣集团有限公司 Intensive double-spliced bus duct shell
CN106558859A (en) * 2015-09-26 2017-04-05 江苏向荣电气有限公司 A kind of assembling bus duct
CN105244829A (en) * 2015-11-10 2016-01-13 鼎圣电气有限公司 Low-voltage busway with rapid radiating function
WO2017103844A1 (en) * 2015-12-16 2017-06-22 Bticino S.P.A Busbar
ITUB20159292A1 (en) * 2015-12-16 2017-06-16 Bticino Spa Barred duct.
US20210036498A1 (en) * 2018-04-17 2021-02-04 Abb Schweiz Ag Laminated busbar and arrangement comprising laminated busbars
US11705708B2 (en) * 2018-04-17 2023-07-18 Abb Schweiz Ag Laminated busbar and arrangement comprising laminated busbars

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