JP3723684B2 - Large current noise filter - Google Patents

Large current noise filter Download PDF

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Publication number
JP3723684B2
JP3723684B2 JP10268898A JP10268898A JP3723684B2 JP 3723684 B2 JP3723684 B2 JP 3723684B2 JP 10268898 A JP10268898 A JP 10268898A JP 10268898 A JP10268898 A JP 10268898A JP 3723684 B2 JP3723684 B2 JP 3723684B2
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Prior art keywords
coil
terminal
noise filter
nut
hole
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JPH11297544A (en
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一三 小林
幸樹 石山
勉 小谷
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TDK Corp
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TDK Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、ラインフィルタ等の大電流用ノイズフィルタに関する。
【０００２】
【従来の技術】
この種のノイズフィルタは、例えば特開平７−４５４５７号公報に開示されているように、金属製ケースの内底部に絶縁台を設け、該絶縁台にはコイルコアおよびボビンからなるコイル組立体をセットして固定金具によりコイル組立体を固定し、該絶縁台に設けた中継端子を、金属製ケースの両端の端子に接続すると共に、コイル端部と前記中継端子とを接続する構造を有している。
【０００３】
【発明が解決しようとする課題】
上述のように、従来のノイズフィルタは、コイル組立体を金属製ケースに固定するために、中継端子を有する絶縁台や固定金具を必要としているので、部品点数が多く、かつ組立工数が多く、コスト高になるという問題点がある。また、接続箇所が多いために、電気的信頼性が低くなるという問題点がある。
【０００４】
本発明は、上記問題点に鑑み、部品点数や組立工数が少なく、簡単な構造により実現可能となることによりコスト低減が図れ、電気的信頼性の向上した大電流用ノイズフィルタを提供することを目的とする。
【０００５】
【課題を解決するための手段】
請求項１の大電流用ノイズフィルタは、２０Ａないし３００Ａの大電流用ノイズフィルタであって、
両端部に外部接続用端子穴を設けて形成された複数のコイルをコアに組付けたコイル組立体と、該コイル組立体を収容する上下のケースからなるケースと、一対の端子台とを備え、
前記端子台は前記コイル組立体の両端に突出させた各コイルの端部に対応する箇所間に仕切りを有すると共に、前記各コイルの端部を前記仕切り間に導く貫通穴状のスリットを有し、かつ前記各コイルの端部に対応する箇所にナットを固定し、 前記コイルは平角線でなり、前記コイル両端部と前記コイル巻回部との間に捻り部を設けることにより、コイル両端部の板面が上下に向く形状となる端子部を形成し、
該端子部には、前記ケース内に設けられるコンデンサまたは抵抗を接続するための端子を接続しており、
前記コイルの端部を前記スリットに挿着すると共に該各コイルの端部を前記ナットに重ねて前記コイル組立体に前記端子台を組付け、
該各端子台を、その両端に設けた溝を下ケースの開口縁に設けた切込みの左右の内縁に嵌合して前記端子台を前記下ケースに固定し、
接続用のねじを、外部リード線の端子の端子穴と、前記コイルの端部の端子穴に挿通して前記ナットに螺合することにより、前記コイルの端部を前記外部リード線に接続した
ことを特徴とする。
【０００６】
これにより、コイル端部が端子として兼用されるので、部品点数の低減、工数の低減が達成されてコスト低減が図れると共に、接続箇所の数が少なくなるため、電気的信頼性が高まる。
【０００７】
請求項２の大電流用ノイズフィルタは、前記コイル両端部の端子穴の形成部分の幅をコイルの幅より拡げたことを特徴とする。
【０００８】
このように、コイル端部を拡げることにより、端子部のリード接続用ねじとしてより大きなサイズのものを用いることが可能となり、また、コイルを構成する線材として小径もしくは狭幅の線材を用いることができ、コイル径の小さな小型で大電流のノイズフィルタを構成することができる。
【００１１】
【発明の実施の形態】
図１は本発明による大電流用ノイズフィルタの一実施の形態を示す分解斜視図、図２（Ａ）はその組付け状態を示す斜視図、図２（Ｂ）はその端子部を示す断面図、図２（Ｃ）はコイル端部の平面図、図３（Ａ）は該ノイズフィルタの回路図である。
【００１２】
図１および図２において、１は金属製ケースであり、該金属製ケース１は下ケース３と上ケース２（図２（Ｂ）参照）とをねじ（図示せず）によって結合することにより一体的に組合わされる。下ケース３の両端の開口縁に設けた切欠部３ａの左右の内縁に、一対の合成樹脂製端子台５、６の両端の左右の溝を嵌め込んでこれらの端子台５、６を下ケース３に固定する。
【００１３】
１１、１２は平角線でなるコイルであり、それぞれＵ形コアどうしの組合わせ、またはＵ形コアとＩ形コアとの組合わせからなるコア１３を組付けたボビン１５に巻かれており、両コイル１１、１２間に絶縁板１７を介在させてコイル組立体７を構成している。各コイル１１、１２は眼鏡形に形成されたものであり、ボビン１５はＨ形の分割ボビンの組合わせによって構成される。
【００１４】
コイル１１、１２の両端は絶縁被覆を剥離しかつ半田メッキを施して端子部１１ａ、１１ｂ、１２ａ、１２ｂとして構成したものであり、各端子部１１ａ、１１ｂ、１２ａ、１２ｂにはそれぞれ端子穴９が設けられ、かつこれらの端子部１１ａ、１１ｂ、１２ａ、１２ｂが上下に向いて端子部として機能するように、端子部１１ａ、１１ｂ、１２ａ、１２ｂとコイル巻回部との間にそれぞれ捻り部１０が設けられている。また、図２（Ｃ）に示すように、端子部１１ａ、１１ｂ、１２ａ、１２ｂはプレス成形により、各コイル１１、１２の幅より広幅に形成されている。
【００１５】
ボビン１５の鍔部１５ａの下面にはねじ孔１６が設けられ、ケース１の底板に設けた孔１８に通したねじ１９を前記ねじ孔１６にねじ込むことにより、コイル組立体７をケース１に固定している。該コイル組立体７は、上ケース２も鍔部１５ａにねじ付けしてもよい。
【００１６】
各端子台５、６は図２（B）に示すように前記コイル１１、１２の端子部１１ａ、１１ｂ、１２ａ、１２ｂを挿通する貫通穴状のスリット２１、２２を有し、かつ図１、図２（A）、図２（B）に示すように、端子部１１ａ、１１ｂ、１２ａ、１２ｂに対応する箇所間は仕切りにより区画されており、各コイルの端部に対応する箇所にナット２３が固定される。そして図２（B）に示すように、前記コイル１１、１２の端子部１１ａ、１１ｂ、１２ａ、１２ｂを、端子台５、６に設けた前記スリット２１、２２に挿着してナット２３に重ねることにより、端子台５、６がコイル組立体７に組付けられる。そして、端子台５、６を下ケース３の切込み３ａに嵌め込み、接続用のねじ２５を、外部リード線２４の端子の端子穴２４ａと、前記端子部１１ａ、１１ｂ、１２ａ、１２ｂの端子穴９に挿通し、かつ前記ナット２３に螺合することにより、外部リード線２４が各端子部１１ａ、１１ｂ、１２ａ、１２ｂに接続される。
【００１７】
図３（Ａ）に示すように、端子部１１ａ、１２ａ間にはＸコンデンサＣｘとＹコンデンサＣｙが取付けられ、端子部１１ｂ、１２ｂ間にはＸコンデンサＣｘが設けられる。また、Ｌ１、Ｌ２はそれぞれコイル１１、１２およびコア１３により構成される。また、電源オフ時にインダクタＬ１、Ｌ２に生じる逆起電力およびコンデンサＣｘ、Ｃｙの放電とノイズ除去のため、必要に応じて、端子部１１ｂ、１２ｂ間に抵抗Ｒが設けられる。各端子部１１ａ、１１ｂ、１２ａ、１２ｂには、図２（Ｂ）に示すように、ケース１内に設けられる前記コンデンサＣｘ、Ｃｙまたは抵抗Ｒを接続するための端子２６を溶接している。なお、図１、図２（Ａ）においては、これらのコンデンサＣｘ、Ｃｙまたは抵抗Ｒの図示を省略している。
【００１８】
コイル１１、１２は大電流（２０Ａ〜３００Ａ）で使用可能でしかも小型に構成するために、本実施の形態においては、平角線を使用し、コイルの半径方向の線材幅が巻心方向の線材幅より大となるように形成されて巻かれているが、本発明は、図３（Ｂ）に示すように、断面形状が円形等他の線材３０を用い、端子穴３０ｂを有する端部３０ａを平板状に拡大して形成してもよい。
【００１９】
このように、コイル１１、１２の端部を端子部として構成することにより、別部品としての端子が不要となるので、部品点数の低減、工数の低減が達成されてコスト低減が図れると共に、接続箇所の数が少なくなるため、電気的信頼性が高まる。また、コイル端部を拡げることにより、端子部のリード接続用ねじ２５としてより大きなサイズの大電流が流せるものを用いることが可能となり、一方、コイル１１、１２用線材として小径あるいは狭幅の線材を用いることができ、コイル径の小さな小型で大電流用ノイズフィルタを構成することができる。また、コイル両端の端子部１１ａ、１１ｂ、１２ａ、１２ｂ部とコイル巻回部との間に捻り部１０を設けることにより、コイル両端部の板面が上下に向く形状に形成したので、広い接触面積の端子面が容易に得られる。また、端子面が上下に向くため、外部接続端子の取付けが容易である。
【００２０】
本発明は、３相用のものとして構成することもできる。また、コイルはその一端が端子部１１ａ、１１ｂをケース１の同じ側にセットし、端子部１２ａ、１２ｂをケース１の他方の側にセットする構成としてもよい。また、ボビンが２個の筒部を有するものではなく、１個の筒部を有するものとして構成することもできる。また、コイル１１、１２とコア１３間に例えばシート状の絶縁物を介在させることにより、ボビン１５は無くした構成としてもよい。
【００２１】
【発明の効果】
請求項１によれば、２０Ａないし３００Ａの大電流用ノイズフィルタであって、両端部に外部接続用端子穴を設けて形成された複数のコイルをコアに組付けたコイル組立体と、該コイル組立体を収容する上下のケースからなるケースと、一対の端子台とを備え、前記端子台は前記コイル組立体の両端に突出させた各コイルの端部に対応する箇所間に仕切りを有すると共に、前記各コイルの端部を前記仕切り間に導く貫通穴状のスリットを有し、かつ前記各コイルの端部に対応する箇所にナットを固定し、前記コイルは平角線でなり、前記コイル両端部と前記コイル巻回部との間に捻り部を設けることにより、コイル両端部の板面が上下に向く形状となる端子部を形成し、該端子部には、前記ケース内に設けられるコンデンサまたは抵抗を接続するための端子を接続しており、前記コイルの端部を前記スリットに挿着すると共に該各コイルの端部を前記ナットに重ねて前記コイル組立体に前記端子台を組付け、該各端子台を、その両端に設けた溝を下ケースの開口縁に設けた切込みの左右の内縁に嵌合して前記端子台を前記下ケースに固定し、接続用のねじを、外部リード線の端子の端子穴と、前記コイルの端部の端子穴に挿通して前記ナットに螺合することにより、前記コイルの端部を前記外部リード線に接続したので、コイル端部が端子として兼用され、部品点数の低減、工数の低減が達成されてコスト低減が図れる。また、接続箇所の数が少なくなるため、電気的信頼性が高まる。また、前記コイルが平角線でなるため、小型で大電流のノイズフィルタが容易に構成でき、また、前記コイル両端部とコイル巻回部との間に捻り部を設けることにより、コイル両端部の板面が上下に向く形状に形成したので、広い接触面積の端子面が容易に得られる。また、端子面が上下に向くため、端子の取付けが容易である。
【００２２】
請求項２によれば、コイル両端部の端子穴の形成部分の幅をコイルの幅より拡げたので、端子部のリード接続用ねじとしてより大きなサイズのものを用いることが可能となり、このため、端子部において電流が制限されることがなく、また、小径もしくは狭幅の線材を用いることができるので、コイル径の小さな小型で大電流のノイズフィルタを構成することができる。
【図面の簡単な説明】
【図１】本発明によるノイズフィルタの一実施の形態を示す分解斜視図である。
【図２】（Ａ）は図１のコイル組立体の分解斜視図、（Ｂ）はその端子部を示す断面図、（Ｃ）はそのコイル端部の平面図である。
【図３】（Ａ）は本実施の形態のノイズフィルタの回路図、（Ｂ）はコイルを構成する線材の他の例を示す平面図である。
【符号の説明】
１：ケース、３：下ケース、５、６：端子台、７：コイル組立体、９：端子穴、１０：捻り部、１１、１２：コイル部、１１ａ、１１ｂ、１２ａ、１２ｂ：端子部、１３：コア、１５：ボビン、１６：ねじ孔、１７：絶縁板、２３：ナット、２４：外部リード線、２５：ねじ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a large current noise filter such as a line filter.
[0002]
[Prior art]
In this type of noise filter, as disclosed in, for example, Japanese Patent Laid-Open No. 7-45457, an insulating base is provided on the inner bottom of a metal case, and a coil assembly including a coil core and a bobbin is set on the insulating base. The coil assembly is fixed by a fixing bracket, and the relay terminal provided on the insulating base is connected to the terminals at both ends of the metal case, and the coil end and the relay terminal are connected. Yes.
[0003]
[Problems to be solved by the invention]
As described above, the conventional noise filter requires an insulating base and a fixing bracket having a relay terminal in order to fix the coil assembly to the metal case, so the number of parts is large, and the number of assembly steps is large. There is a problem of high costs. Moreover, since there are many connection locations, there exists a problem that electrical reliability becomes low.
[0004]
In view of the above problems, the present invention provides a high-current noise filter that has a reduced number of parts and assembly steps, can be realized with a simple structure, can reduce costs, and has improved electrical reliability. Objective.
[0005]
[Means for Solving the Problems]
The noise filter for large current of claim 1 is a noise filter for large current of 20A to 300A,
A coil assembly in which a plurality of coils formed by providing terminal holes for external connection at both ends are assembled to a core, a case composed of upper and lower cases for housing the coil assembly, and a pair of terminal blocks ,
The terminal block has a partition between locations corresponding to the ends of the coils protruding from both ends of the coil assembly, and a through-hole-shaped slit that guides the ends of the coils between the partitions. And, a nut is fixed to a location corresponding to the end of each coil, the coil is a flat wire, and a twist portion is provided between the coil both ends and the coil winding portion, thereby Forming a terminal part in which the plate surface is vertically oriented,
A terminal for connecting a capacitor or a resistor provided in the case is connected to the terminal portion ,
Assembling the terminal block to the coil assembly by inserting the end of the coil into the slit and overlapping the end of each coil on the nut,
The terminal blocks are fitted to the left and right inner edges of the cuts provided in the opening edges of the lower case with grooves provided at both ends thereof, and the terminal blocks are fixed to the lower case,
The end of the coil was connected to the external lead by inserting a screw for connection through the terminal hole of the terminal of the external lead wire and the terminal hole of the end of the coil and screwing into the nut. It is characterized by that.
[0006]
Thereby, since the coil end is also used as a terminal, the number of parts and man-hours can be reduced, the cost can be reduced, and the number of connection points can be reduced, so that the electrical reliability is increased.
[0007]
The noise filter for large current according to claim 2 is characterized in that the width of the terminal hole forming portion at both ends of the coil is wider than the width of the coil.
[0008]
In this way, by expanding the coil end, it is possible to use a larger-sized screw as a lead connection screw of the terminal portion, and to use a small-diameter or narrow-width wire as the wire constituting the coil. In addition, a small and large current noise filter with a small coil diameter can be configured.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 is an exploded perspective view showing an embodiment of a noise filter for large current according to the present invention, FIG. 2A is a perspective view showing an assembled state thereof, and FIG. 2B is a cross-sectional view showing a terminal portion thereof. 2C is a plan view of the coil end, and FIG. 3A is a circuit diagram of the noise filter.
[0012]
1 and 2, reference numeral 1 denotes a metal case. The metal case 1 is integrally formed by connecting a lower case 3 and an upper case 2 (see FIG. 2B) with screws (not shown). Combined. The left and right grooves on both ends of the pair of synthetic resin terminal blocks 5 and 6 are fitted into the left and right inner edges of the notch 3a provided at the opening edges at both ends of the lower case 3 so that these terminal blocks 5 and 6 are mounted on the lower case. Fix to 3.
[0013]
11 and 12 are coils made of rectangular wires, each wound around a bobbin 15 to which a core 13 composed of a combination of U-shaped cores or a combination of a U-shaped core and an I-shaped core is assembled. An insulating plate 17 is interposed between the coils 11 and 12 to constitute the coil assembly 7. Each of the coils 11 and 12 is formed in an eyeglass shape, and the bobbin 15 is constituted by a combination of H-shaped divided bobbins.
[0014]
Both ends of the coils 11 and 12 are formed as terminal portions 11a, 11b, 12a and 12b by peeling off the insulation coating and solder plating, and each terminal portion 11a, 11b, 12a and 12b has a terminal hole 9 respectively. And a twisted portion between each of the terminal portions 11a, 11b, 12a, 12b and the coil winding portion so that these terminal portions 11a, 11b, 12a, 12b are vertically oriented and function as terminal portions. 10 is provided. As shown in FIG. 2C, the terminal portions 11a, 11b, 12a, and 12b are formed wider than the widths of the coils 11 and 12 by press molding.
[0015]
A screw hole 16 is provided on the lower surface of the flange portion 15a of the bobbin 15, and the coil assembly 7 is fixed to the case 1 by screwing a screw 19 passed through the hole 18 provided in the bottom plate of the case 1 into the screw hole 16. are doing. In the coil assembly 7, the upper case 2 may also be screwed to the flange portion 15a.
[0016]
As shown in FIG. 2B, each of the terminal blocks 5 and 6 has through-hole shaped slits 21 and 22 through which the terminal portions 11a, 11b, 12a and 12b of the coils 11 and 12 are inserted, and FIG. As shown in FIGS. 2A and 2B, the portions corresponding to the terminal portions 11a, 11b, 12a, and 12b are partitioned by partitions, and nuts 23 are provided at the portions corresponding to the end portions of the respective coils. Is fixed. 2B, the terminal portions 11a, 11b, 12a and 12b of the coils 11 and 12 are inserted into the slits 21 and 22 provided in the terminal blocks 5 and 6 and overlapped with the nut 23. Thus, the terminal blocks 5 and 6 are assembled to the coil assembly 7. Then, the terminal blocks 5 and 6 are fitted into the notches 3a of the lower case 3, and the connection screws 25 are connected to the terminal holes 24a of the terminals of the external lead wires 24 and the terminal holes 9 of the terminal portions 11a, 11b, 12a and 12b. The external lead wire 24 is connected to each of the terminal portions 11a, 11b, 12a, and 12b by being inserted into the nut 23 and screwed into the nut 23.
[0017]
As shown in FIG. 3A, an X capacitor Cx and a Y capacitor Cy are attached between the terminal portions 11a and 12a, and an X capacitor Cx is provided between the terminal portions 11b and 12b. L1 and L2 are constituted by coils 11 and 12 and a core 13, respectively. In addition, a resistor R is provided between the terminal portions 11b and 12b as necessary in order to remove the counter electromotive force generated in the inductors L1 and L2 and the discharge of the capacitors Cx and Cy and noise when the power is turned off. As shown in FIG. 2B, terminals 26 for connecting the capacitors Cx, Cy or resistor R provided in the case 1 are welded to the terminal portions 11a, 11b, 12a, 12b. In FIGS. 1 and 2A, the capacitors Cx and Cy or the resistor R are not shown.
[0018]
Since the coils 11 and 12 can be used with a large current (20A to 300A) and are small in size, a rectangular wire is used in the present embodiment, and the wire in the radial direction of the coil has a wire width in the core direction. Although formed and wound so as to be larger than the width, as shown in FIG. 3 (B), the present invention uses another wire rod 30 such as a circular cross section and has an end portion 30a having a terminal hole 30b. May be formed in a flat plate shape.
[0019]
In this way, by configuring the ends of the coils 11 and 12 as terminal portions, terminals as separate components are not required, so that the number of components and man-hours can be reduced, and costs can be reduced. Since the number of locations is reduced, electrical reliability is increased. Further, by expanding the coil end portion, it is possible to use a lead connecting screw 25 of the terminal portion that can flow a large current of a larger size. On the other hand, as the wire material for the coils 11 and 12, a wire material having a small diameter or a narrow width. Can be used, and a small-sized and large-current noise filter can be configured. In addition, by providing the twisted portion 10 between the terminal portions 11a, 11b, 12a, 12b at both ends of the coil and the coil winding portion, the plate surfaces at both ends of the coil are formed so as to face up and down. A terminal surface having an area can be easily obtained. In addition, since the terminal surface faces vertically, the external connection terminal can be easily attached.
[0020]
The present invention can also be configured for three phases. Further, one end of the coil may be configured such that the terminal portions 11 a and 11 b are set on the same side of the case 1 and the terminal portions 12 a and 12 b are set on the other side of the case 1. Further, the bobbin may be configured to have one cylindrical part instead of two cylindrical parts. Further, the bobbin 15 may be eliminated by interposing, for example, a sheet-like insulator between the coils 11 and 12 and the core 13.
[0021]
【The invention's effect】
According to the first aspect of the present invention, there is provided a 20A to 300A high-current noise filter, in which a plurality of coils formed by providing external connection terminal holes at both ends are assembled to a core, and the coil A case composed of upper and lower cases for housing the assembly and a pair of terminal blocks, the terminal blocks having partitions between locations corresponding to the ends of the coils projecting at both ends of the coil assembly; , Having a through-hole shaped slit for guiding the end of each coil between the partitions, and fixing a nut at a location corresponding to the end of each coil, the coil being a rectangular wire, By providing a twisted portion between the coil winding portion and the coil winding portion, a terminal portion having a shape in which the plate surfaces of both end portions of the coil are vertically oriented is formed, and the terminal portion is provided with a capacitor provided in the case Or connect resistor It connects the order of terminal, assembling the terminal block to the coil assembly by overlapping the ends of the respective coils to the nut while inserting the end portion of the coil to the slit, respective terminal The terminal is fixed to the lower case by fitting grooves provided at both ends thereof to the left and right inner edges of the notch provided at the opening edge of the lower case, and a screw for connection is connected to the terminal of the external lead wire. Since the end of the coil is connected to the external lead wire by being inserted into the terminal hole and the terminal hole of the end of the coil and screwed into the nut, the coil end is also used as a terminal, Reduction in the number of parts and man-hours can be achieved, thereby reducing costs. Moreover, since the number of connection locations is reduced, electrical reliability is increased. In addition, since the coil is a rectangular wire, a small and high-current noise filter can be easily configured, and by providing a twisted part between the coil both ends and the coil winding part, Since the plate surface is formed so as to face up and down, a terminal surface with a wide contact area can be easily obtained. Moreover, since the terminal surface faces vertically, it is easy to mount the terminal.
[0022]
According to claim 2, since the width of the portion where the terminal hole is formed at both ends of the coil is wider than the width of the coil, it is possible to use a larger size screw as the lead connection screw of the terminal portion. Since the current is not limited in the terminal portion, and a small-diameter or narrow-width wire can be used, a small and large-current noise filter with a small coil diameter can be configured.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of a noise filter according to the present invention.
2A is an exploded perspective view of the coil assembly of FIG. 1, FIG. 2B is a cross-sectional view showing a terminal portion thereof, and FIG. 2C is a plan view of an end portion of the coil.
3A is a circuit diagram of a noise filter according to the present embodiment, and FIG. 3B is a plan view showing another example of a wire constituting a coil.
[Explanation of symbols]
1: Case, 3: Lower case, 5, 6: Terminal block, 7: Coil assembly, 9: Terminal hole, 10: Twist part, 11, 12: Coil part, 11a, 11b, 12a, 12b: Terminal part, 13: Core, 15: Bobbin, 16: Screw hole, 17: Insulating plate, 23: Nut, 24: External lead wire, 25: Screw

Claims (2)

２０Ａないし３００Ａの大電流用ノイズフィルタであって、
両端部に外部接続用端子穴を設けて形成された複数のコイルをコアに組付けたコイル組立体と、該コイル組立体を収容する上下のケースからなるケースと、一対の端子台とを備え、
前記端子台は前記コイル組立体の両側に突出させた各コイルの端部に対応する箇所間に仕切りを有すると共に、前記各コイルの端部を前記仕切り間に導く貫通穴状のスリットを有し、かつ前記各コイルの端部に対応する箇所にナットを固定し、
前記コイルは平角線でなり、前記コイル両端部と前記コイル巻回部との間に捻り部を設けることにより、コイル両端部の板面が上下に向く形状となる端子部を形成し、
該端子部には、前記ケース内に設けられるコンデンサまたは抵抗を接続するための端子を接続しており、
前記コイルの端部を前記スリットに挿着すると共に該各コイルの端部を前記ナットに重ねて前記コイル組立体に前記端子台を組付け、
該各端子台を、その両端に設けた溝を下ケースの開口縁に設けた切込みの左右の内縁に嵌合して前記端子台を前記下ケースに固定し、
接続用のねじを、外部リード線の端子の端子穴と、前記コイルの端部の端子穴に挿通して前記ナットに螺合することにより、前記コイルの端部を前記外部リード線に接続したことを特徴とする大電流用ノイズフィルタ。20A to 300A large current noise filter,
A coil assembly in which a plurality of coils formed by providing terminal holes for external connection at both ends are assembled to a core, a case composed of upper and lower cases for housing the coil assembly, and a pair of terminal blocks ,
The terminal block has a partition between locations corresponding to the ends of the coils projecting on both sides of the coil assembly, and has a through-hole-shaped slit that guides the end of each coil between the partitions. And fixing a nut to a location corresponding to the end of each coil,
The coil is a flat wire, and by providing a twisted part between the coil both ends and the coil winding part, a terminal part is formed in which the plate surfaces of both ends of the coil are vertically oriented,
A terminal for connecting a capacitor or a resistor provided in the case is connected to the terminal portion ,
Assembling the terminal block to the coil assembly by inserting the end of the coil into the slit and overlapping the end of each coil on the nut,
The terminal blocks are fitted to the left and right inner edges of the cuts provided in the opening edges of the lower case with grooves provided at both ends thereof, and the terminal blocks are fixed to the lower case,
The end of the coil was connected to the external lead by inserting a screw for connection through the terminal hole of the terminal of the external lead wire and the terminal hole of the end of the coil and screwing into the nut. This is a noise filter for large currents. 請求項１において、
前記コイル両端部の端子穴の形成部分の幅をコイルの幅より拡げたことを特徴とする大電流用ノイズフィルタ。In claim 1,
A noise filter for large current, wherein the width of the terminal hole forming portion at both ends of the coil is wider than the width of the coil.
JP10268898A 1998-04-14 1998-04-14 Large current noise filter Expired - Lifetime JP3723684B2 (en)

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JP2003217941A (en) * 2002-01-22 2003-07-31 Toko Inc Inductance element
EP1727280B1 (en) * 2005-05-24 2009-07-22 Schaffner Emv Ag Housing for EMI filter and EMI filter
JP5166149B2 (en) * 2008-07-15 2013-03-21 光洋電子工業株式会社 Busbar support structure for power steering device
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