JP2012138640A

JP2012138640A - choke coil

Info

Publication number: JP2012138640A
Application number: JP2012097649A
Authority: JP
Inventors: Yumiko Osada; 裕美子長田; Toru Hirohashi; 徹廣橋; Hideyuki Akiyama; 英之秋山; Jun Hironaka; 純廣中; Hiroaki Arisumi; 博詔有隅
Original assignee: FDK Corp
Current assignee: FDK Corp
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2012-07-19

Abstract

【課題】部品実装において位置出しが正確に行えて、はんだ接続を大電流に対応させて安定に得ることができ、自動化実装に好ましく適用できるチョークコイルを提供すること
【解決手段】棒状のフェライトコア１の外周に線材２を所定に巻き回してコイル３とし、線材２は線径を太くする等により電流容量を増して大電流の用途に対応させる。支持体５の上面に、２つの電極片４を離反した並列状態で支持させる。フェライトコアは２つの電極片に対してその端面を固着させて縦向き配置とする。電極片は、帯板状の金属板材をクランク状に多段に曲げ加工して支持体の対向する側辺の外側にそれぞれ平面部位を有し、一方の平面部位の先端は上方に折り曲げて立ち上げ縁部４４となると共にその立ち上げ縁部に孔部４３を備える。平面部位は、プリント基板のパターン部へ接面させる端子部４２とし、孔部にコイルのリード端３１を嵌め合わせて電気的に接続させる。
【選択図】図５ PROBLEM TO BE SOLVED: To provide a choke coil that can be accurately positioned in component mounting, can stably obtain a solder connection corresponding to a large current, and can be preferably applied to automatic mounting.
[Solution] The wire 2 is wound around the outer periphery of the rod-shaped ferrite core 1 to form a coil 3, and the wire 2 is increased in current capacity, for example, by increasing the wire diameter so that it can be used for large current applications. The two electrode pieces 4 are supported on the upper surface of the support 5 in a separated parallel state. The ferrite core is disposed vertically with its end faces fixed to the two electrode pieces. The electrode pieces are formed by bending a strip-like metal plate material into a crank shape in multiple stages, and each has a flat portion on the outside of the opposite side of the support, and the tip of one flat portion is bent upward and started up. The edge 44 is provided with a hole 43 at the rising edge. The flat portion is a terminal portion 42 that comes into contact with the pattern portion of the printed circuit board, and the lead end 31 of the coil is fitted into the hole portion to be electrically connected.
[Selection] FIG.

Description

本発明は、コイルの線材を太径とする等により電流容量を増して大電流の用途に対応させるチョークコイルに関するもので、より具体的には、コイルのリード端について部品実装に係る取り付け性および電気的な接続性の改良に関する。 The present invention relates to a choke coil that increases current capacity by making the wire of the coil thicker or the like, and more specifically corresponds to a large current application. It relates to improvement of electrical connectivity.

チョークコイルの一つの形態として、棒状のフェライトコアの外周に線材を所定に巻き回してコイルとするものある。よく知られているように、チョークコイルは、高周波成分を含む電流を平滑化するための平滑回路等へ利用される。
また、ＤＣ−ＤＣコンバータ等では小型化はもちろんであるが高出力化が進められているため、係る用途に適用するには、大電流に対応させる必要性が生じている。そこで例えば特許文献１などに見られるように、コイルの線材は平角線を多数重ねて使用する等の提案がある。しかし何れにしても、電流容量を大きく得るには、線材は、ある程度の断面積が必要であり、コイルの線材を太径とする等により電流容量を増して大電流の用途に対応させることに変わりない。 As one form of the choke coil, there is a coil obtained by winding a wire rod around a rod-shaped ferrite core in a predetermined manner. As is well known, the choke coil is used for a smoothing circuit or the like for smoothing a current containing a high frequency component.
In addition, since the DC-DC converter or the like is not only reduced in size but also increased in output, it is necessary to cope with a large current in order to apply to such applications. Therefore, for example, as can be seen in Patent Document 1, there are proposals such as using a large number of rectangular wires as the coil wire. In any case, however, to obtain a large current capacity, the wire material needs a certain cross-sectional area. To increase the current capacity by increasing the diameter of the coil wire material, etc. no change.

特開２００７−８８３４０号公報JP 2007-88340 A

しかし、従来のチョークコイルでは以下に示す問題がある。電気接続のための端子部は、上述した特許文献１のように、コイルのリード端を単に突き出した先端部としたり、あるいはコイルのリード端を単に折り曲げ成形した先端部としたりする構成を採るため、部品における位置が定位置とは言えず、ばらつきが大きい。このため、プリント基板へ実装する際に、パターン部に対して位置ずれ・がたつき（離反）を起こす問題があり、接続部位としての位置精度が出しにくく、はんだ付けが安定しない問題を引き起こす。また、上記の従来のチョークコイルは、自動化実装における吸着装置では、吸着保持することができずハンドリング性が悪い。 However, the conventional choke coil has the following problems. In order to adopt a configuration in which the terminal portion for electrical connection is a tip portion simply protruding the lead end of the coil or a tip portion simply bending the lead end of the coil as in Patent Document 1 described above. The position in the part is not a fixed position, and the variation is large. For this reason, when mounting on a printed circuit board, there exists a problem which raise | generates position shift and rattling (separation) with respect to a pattern part. Further, the above-described conventional choke coil cannot be sucked and held by the sucking device in the automatic mounting and has poor handling properties.

この発明は上述した課題を解決するもので、その目的は、電気接続のための端子部を所定に構成でき、部品実装において位置出しが正確に行えて、はんだ接続を大電流に対応させて安定に得ることができ、自動化実装に好ましく適用できるチョークコイルを提供することにある。 The object of the present invention is to solve the above-mentioned problems. The purpose of the present invention is to be able to configure a predetermined terminal portion for electrical connection, to accurately position the component in mounting, and to stabilize the solder connection corresponding to a large current. It is an object of the present invention to provide a choke coil that can be preferably applied to automated mounting.

上述した目的を達成するために、本発明に係るチョークコイルは、（１）絶縁材料からなる支持体の上面に、２つの電極片を離反した並列状態で支持させ、前記フェライトコアは前記２つの電極片に対してその端面を固着させて縦向き配置とし、前記電極片は、帯板状の金属板材をクランク状に多段に曲げ加工して前記支持体の対向する側辺の外側にそれぞれ平面部位を有し、一方の平面部位の先端は上方に折り曲げて立ち上げ縁部となると共にその立ち上げ縁部に孔部を備え、前記平面部位は、プリント基板のパターン部へ接面させる端子部とし、その孔部に前記コイルのリード端を嵌め合わせて電気的に接続させるようにした。大電流の用途に対応させるには、例えば太径とする等により電流容量を増すことで実現できる。 In order to achieve the above-described object, the choke coil according to the present invention is (1) supported on the upper surface of a support made of an insulating material in a parallel state with two electrode pieces separated from each other, and the ferrite core includes the two ferrite cores. The end face is fixed to the electrode piece so as to be arranged vertically, and the electrode piece is formed by bending a strip-like metal plate material into a crank shape in a multistage manner, and is flat on the outer sides of the opposing sides of the support. A terminal portion that has a portion, the tip of one planar portion is bent upward to form a rising edge and has a hole in the rising edge, and the flat portion contacts the pattern portion of the printed circuit board And the lead end of the coil is fitted into the hole to be electrically connected. In order to deal with the use of a large current, it can be realized by increasing the current capacity by, for example, increasing the diameter.

（２）前記２つの電極片に設けた前記孔部を形成した前記立ち上げ縁部は、前記支持体の同一辺側に形成する構成にするとよい。 (2) The rising edge portion in which the hole provided in the two electrode pieces is formed may be formed on the same side of the support .

（３）前記電極片の他方の平面部位の先端も上方に折り曲げて立ち上げ縁部とする構成にするとよい。 (3) The tip of the other planar portion of the electrode piece may be bent upward to form a rising edge .

（４）前記孔部は上下方向に延びる長孔とする構成にするとよい。 (4) The hole is preferably a long hole extending in the vertical direction .

（５）前記平面部位と前記支持体の下面が同一平面上に位置する構成にするとよい。 (5) It is good to set it as the structure which the said plane part and the lower surface of the said support body are located on the same plane .

係る構成にすることにより本発明では、コイルのリード端は電極片に接続し、電極片には平面部位からなる端子部を設けるので、電極片つまり電気接続のための端子部が所定に構成できる。この電極片は、端子部となる平面部位を適宜サイズに設定でき、板厚も適宜に設定できる。したがって、電極編の部分の抵抗を適宜に設定することができ、所望する電流容量を得ることができ、電流容量を大きく得て大電流に対応できる。 By adopting such a configuration, in the present invention, the lead end of the coil is connected to the electrode piece, and the electrode piece is provided with a terminal portion consisting of a planar portion, so that the electrode piece, that is, the terminal portion for electrical connection can be configured in a predetermined manner. . In this electrode piece, the planar portion serving as the terminal portion can be set to an appropriate size, and the plate thickness can also be set appropriately. Therefore, the resistance of the electrode knitted portion can be set appropriately, a desired current capacity can be obtained, and a large current capacity can be obtained to cope with a large current.

端子部は、１つの電極片について複数設けるので、電気抵抗を小さくできることはもちろん、はんだ接続について信頼性を向上できる。また、端子部には当該平坦部位を囲む縁部について立ち上げ縁部を複数設けるので、はんだ付けの際は立ち上げ縁部にそれぞれフィレットが成膜し、はんだフィレットも複数になるので、電気的な接続が確実になる。 Since a plurality of terminal portions are provided for one electrode piece, the electrical resistance can be reduced and the reliability of solder connection can be improved. In addition, since the terminal portion is provided with a plurality of rising edges for the edge surrounding the flat portion, a fillet is formed on each of the rising edges when soldering, and there are a plurality of solder fillets. Connection is ensured.

支持体は、２つ並ぶ電極片が組み付くことになる部材なので、それら両者間に渡る平面部位を有し、この支持体が上部に位置する配置を採ることで当該部品の上部に比較的に広い平面を設定できる。したがって、これは自動化実装に際して吸着面とすることができ、高い精度で位置出しが行えることになる。 Since the support is a member to which two electrode pieces are to be assembled, it has a plane portion extending between them, and the support is positioned on the upper part so that it is relatively placed on the upper part of the part. A wide plane can be set. Therefore, this can be used as a suction surface for automated mounting, and positioning can be performed with high accuracy.

また、支持体をフェライト等の磁性材料から形成することでは、支持体の配置がフェライトコアの長手に沿う構成において漏れ磁束を低減させることができる。もちろん、支持体とする磁性材料には電気抵抗が絶縁体並に十分に高いものを使用する。 Further, by forming the support from a magnetic material such as ferrite, the leakage flux can be reduced in a configuration in which the support is disposed along the length of the ferrite core. Of course, a magnetic material having a sufficiently high electrical resistance as an insulator is used as the magnetic material for the support.

本発明では、コイルのリード端は電極片に接続し、電極片には平面部位からなる端子部を設けるので、電極片つまり電気接続のための端子部が所望に構成できる。端子部は当該部品において位置が定まり、部品実装において位置出しが正確に行える。
この電極片は、端子部となる平面部位を適宜サイズに設定でき、板厚も適宜に設定できることから、所望する電流容量を得ることができ、電流容量を大きく得て大電流に対応できる。そして、端子部は１つの電極片について複数設けるので、電気抵抗を小さくできることはもちろん、はんだ接続について信頼性を向上できる（全ての端子が部接続不良となる可能性はきわめて低く、少なくとも１つは確実に接続することができる）。その結果、はんだ接続を大電流に対応させて安定に得ることができ、自動化実装に好ましく適用できる。 In the present invention, the lead end of the coil is connected to the electrode piece, and the electrode piece is provided with a terminal portion consisting of a planar portion, so that the electrode piece, that is, the terminal portion for electrical connection can be configured as desired. The position of the terminal portion is determined in the component, and positioning can be accurately performed in component mounting.
Since this electrode piece can set the plane part used as a terminal part to an appropriate size, and can also set an appropriate plate thickness, it can obtain a desired current capacity, and can obtain a large current capacity to cope with a large current. In addition, since a plurality of terminal portions are provided for one electrode piece, electrical resistance can be reduced, as well as reliability for solder connection can be improved (the possibility that all terminals will have poor connection is extremely low, at least one of which is Can be connected securely). As a result, the solder connection can be stably obtained corresponding to a large current, and can be preferably applied to automated mounting.

（ａ）は本発明に係るチョークコイルの第１の参考例を示す斜視図であり、（ｂ）は接面側から見た斜視図である。(A) is a perspective view which shows the 1st reference example of the choke coil which concerns on this invention, (b) is the perspective view seen from the contact surface side. （ａ）は図１に示すチョークコイルの正面図であり、（ｂ）はその側面図である。(A) is a front view of the choke coil shown in FIG. 1, and (b) is a side view thereof. （ａ）は本発明に係るチョークコイルの第２の参考例を示す斜視図であり、（ｂ）はそれを接面側から見た斜視図である。(A) is the perspective view which shows the 2nd reference example of the choke coil which concerns on this invention, (b) is the perspective view which looked at it from the contact surface side. （ａ）は図３に示すチョークコイルの正面図であり、（ｂ）はその側面である。(A) is a front view of the choke coil shown in FIG. 3, and (b) is a side view thereof. （ａ）は本発明に係るチョークコイルの好適な実施形態を示す斜視図であり、（ｂ）はそれを接面側から見た斜視図である。(A) is the perspective view which shows suitable embodiment of the choke coil which concerns on this invention, (b) is the perspective view which looked at it from the contact surface side. （ａ）は図５に示すチョークコイルの正面図であり、（ｂ）はその側面図である。(A) is a front view of the choke coil shown in FIG. 5, and (b) is a side view thereof.

図１，図２は、本発明の第１の参考例を示している。本形態においてチョークコイルは、棒状のフェライトコア１を有し、当該フェライトコア１の外周に線材２を所定に巻き回してコイル３とする。そして、線材２は、線径を太くする等により電流容量を増して大電流（数［Ａ］〜１０数［Ａ］：１００［Ａ］以下）の用途に対応させる構成になっている。 1 and 2 show a first reference example of the present invention. In this embodiment, the choke coil has a rod-shaped ferrite core 1, and a wire 2 is wound around the periphery of the ferrite core 1 to make a coil 3. And the wire 2 is comprised so that it may respond to the use of a large current (several [A] -10 dozens [A]: 100 [A] or less) by increasing current capacity by making a wire diameter thick.

コイル３は、図２（ｂ）に示すように、リード端３１の引き出しをフェライトコア１の長手に沿う両端とし、フェライトコア１の両端に電極片４，４をそれぞれ位置させる。そして、それら電極片４，４は、フェライトコア１の長手に沿う配置の支持体５に組み付けて支持している。 In the coil 3, as shown in FIG. 2B, the lead end 31 is led out at both ends along the length of the ferrite core 1, and the electrode pieces 4 and 4 are positioned at both ends of the ferrite core 1, respectively. And these electrode pieces 4 and 4 are assembled | attached and supported to the support body 5 of the arrangement | positioning along the length of the ferrite core 1. As shown in FIG.

電極片４は、金属板材を所定に曲げ加工して形成する。図２（ａ）に示すように、電極片４は、所定の部位に切り欠き部４１を設けると共に、平面部位からなる端子部４２を少なくとも２つ形成している。切り欠き部４１には、コイル３のリード端３１を嵌め合わせ、はんだ等により電気的に接続させる。本形態では、電極片４は長方形の板材から形成し、対向する２辺を同一側へ折り曲げてあり、一方の折り曲げ縁が支持体５に埋め込む状態に組み付き、他方の折り曲げ縁は中央が切り欠いてあって左右が２つの平面部位（端子部４２）になっている。また、電極片４をなす金属板材は、板厚を所定に大きく設定してあり、電流容量を増して大電流の用途に対応させている。 The electrode piece 4 is formed by bending a metal plate material in a predetermined manner. As shown in FIG. 2A, the electrode piece 4 is provided with a notch portion 41 at a predetermined portion and at least two terminal portions 42 each having a planar portion. The lead end 31 of the coil 3 is fitted into the notch 41 and electrically connected by solder or the like. In this embodiment, the electrode piece 4 is formed of a rectangular plate, and two opposing sides are bent to the same side, assembled so that one bent edge is embedded in the support 5, and the other bent edge is cut out at the center. The left and right sides are two flat portions (terminal portions 42). In addition, the metal plate material forming the electrode piece 4 has a predetermined large plate thickness, and the current capacity is increased to correspond to the use of a large current.

支持体５は樹脂材料等の絶縁材料から形成している。また、支持体５はフェライト等の磁性材料から形成する構成にしてもよく、その場合、２つの電極片４，４について絶縁を良好に得るため磁性材料には電気抵抗が絶縁体並に十分に高い素材を使用することになる。支持体５を磁性材料から形成することでは、コイル３に沿う配置であるため漏れ磁束を低減でき、その結果、インダクタンスを大きく得ることができる。 The support 5 is made of an insulating material such as a resin material. Further, the support 5 may be formed of a magnetic material such as ferrite. In that case, the magnetic material has a sufficient electrical resistance equivalent to that of the insulator in order to obtain good insulation for the two electrode pieces 4 and 4. High materials will be used. By forming the support 5 from a magnetic material, the magnetic flux leakage can be reduced because of the arrangement along the coil 3, and as a result, a large inductance can be obtained.

したがって本形態では、支持体５がフェライトコア１の長手に沿う配置をとり、フェライトコア１を間に向こう側に端子部４２が位置し、プリント基板に対してフェライトコア１の長手が沿う横向きの取り付け姿勢となる。 Therefore, in this embodiment, the support body 5 is arranged along the length of the ferrite core 1, the terminal portion 42 is located on the opposite side of the ferrite core 1, and the length of the ferrite core 1 extends along the length of the printed circuit board. It becomes the mounting posture.

このように、コイル３のリード端３１は電極片４に接続し、電極片４には平面部位からなる端子部４２を設けるので、電極片４つまり電気接続のための端子部４２が所定に構成できる。したがって、端子部４２は当該部品において位置が定まり、このため部品実装において位置出しが正確に行える。 In this way, the lead end 31 of the coil 3 is connected to the electrode piece 4, and the electrode piece 4 is provided with the terminal portion 42 formed of a planar portion, so that the electrode piece 4, that is, the terminal portion 42 for electrical connection is configured in a predetermined manner. it can. Therefore, the position of the terminal portion 42 is determined in the component, and therefore positioning can be performed accurately in component mounting.

そして、この電極片４は、端子部４２となる平面部位を適宜サイズに設定でき、板厚も適宜に設定できる。したがって、所望する電流容量を得ることができ、電流容量を大きく得て大電流に対応できる。端子部４２は１つの電極片４つについて複数設けるので、電気抵抗を小さくできることはもちろん、はんだ接続について信頼性を向上できる。 And this electrode piece 4 can set the plane part used as the terminal part 42 to an appropriate size, and can also set board thickness suitably. Therefore, a desired current capacity can be obtained, and a large current capacity can be obtained to cope with a large current. Since a plurality of terminal portions 42 are provided for four electrode pieces, the electrical resistance can be reduced and the reliability of solder connection can be improved.

この場合、支持体５は当該部品の天板になっており平面であることから自動実装の際に吸着面とすることができる。このため、高い精度で位置出しが行えてプリント基板の所定位置へ正確に搭載でき、自動化実装を高い信頼性で高品位に行うことができる。したがって本発明によれば、はんだ接続を大電流に対応させて安定に得ることができ、自動化実装に好ましく適用できる。 In this case, since the support body 5 is a top plate of the component and is a flat surface, it can be used as a suction surface during automatic mounting. For this reason, positioning can be performed with high accuracy, and it can be accurately mounted at a predetermined position on the printed circuit board, and automated mounting can be performed with high reliability and high quality. Therefore, according to the present invention, the solder connection can be stably obtained corresponding to a large current, and can be preferably applied to automated mounting.

図３，図４は、本発明の第２の参考例を示している。本形態においてチョークコイルは、基本的には第１の参考例と同様であり、棒状のフェライトコア１の外周に線材２を所定に巻き回してコイル３とし、線材２は線径を太くする等により電流容量を増して大電流の用途に対応させる構成になっている。第１の参考例と同様な構成には同一符号を付してあり、その説明を省略する。 3 and 4 show a second reference example of the present invention. In this embodiment, the choke coil is basically the same as in the first reference example, and the wire 2 is wound around the outer periphery of the rod-shaped ferrite core 1 to form a coil 3, and the wire 2 has a thick wire diameter, etc. Therefore, the current capacity is increased so that it can be used for large current applications. The same components as those in the first reference example are denoted by the same reference numerals, and the description thereof is omitted.

本形態では、電極片４は帯板材から形成している。つまり、電極片４は帯板材の両端をそれぞれ略Ｌ字形状に曲げ加工して一辺を解放側とした枠形状に形成し、当該電極片４を２つ解放側を下に並列させて支持体５が両者間に渡り支持する配置とし、電極片４による２つ並びの枠体内にフェライトコア１を位置させている。そして、電極片４の解放側の端部が平面部位になっており、それらが２つの端子部４２，４２になる。フェライトコア１は、２つの電極片４，４の並びに長手が沿う横向きの配置とし、電極片４の一カ所に設けた孔部４３へリード端３１を嵌め合わせ、はんだ等により電気的に接続させる。 In this embodiment, the electrode piece 4 is formed from a strip material. In other words, the electrode piece 4 is formed into a frame shape with one side being the open side by bending both ends of the strip plate material into a substantially L shape, and the two electrode pieces 4 are placed side by side with the release side in parallel. The ferrite core 1 is positioned in a double-lined frame of electrode pieces 4. And the open | release side edge part of the electrode piece 4 becomes a plane site | part, and they become the two terminal parts 42 and 42. FIG. The ferrite core 1 has two electrode pieces 4 and 4 arranged in a lateral direction along the length, and the lead end 31 is fitted into a hole 43 provided at one position of the electrode piece 4 and electrically connected by solder or the like. .

フェライトコア１の姿勢は、本形態のようにプリント基板に対して長手が沿う横向きの取り付け姿勢とする構成が部品高さを低くできるメリットから好ましい。逆に、フェライトコア１の端面を支持体５側へ固着させて縦向きの取り付け姿勢とする構成にすることもできる。そのように、プリント基板に対して縦向きの取り付け姿勢では部品の領有面積を小さくできるメリットがある。 The configuration of the ferrite core 1 is preferably a configuration in which the longitudinal mounting orientation along the length of the printed circuit board as in the present embodiment is advantageous from the advantage that the component height can be reduced. On the contrary, the end face of the ferrite core 1 can be fixed to the support 5 side so as to have a vertical mounting posture. As described above, there is an advantage that the occupied area of the component can be reduced in the vertical mounting posture with respect to the printed circuit board.

この場合も、コイル３のリード端３１は電極片４に接続し、電極片４には平面部位からなる端子部４２を設けるので、電極片４つまり電気接続のための端子部４２が所定に構成できる。端子部４２は、当該部品において位置が定まり、部品実装において位置出しが正確に行える。そして、端子部４２は、１つの電極片４つについて複数設けるので、電気抵抗を小さくできることはもちろん、はんだ接続について信頼性を向上できる。したがって本形態にあっても、はんだ接続を大電流に対応させて安定に得ることができ、自動化実装に好ましく適用できる。 Also in this case, since the lead end 31 of the coil 3 is connected to the electrode piece 4 and the electrode piece 4 is provided with the terminal portion 42 formed of a planar portion, the electrode piece 4, that is, the terminal portion 42 for electrical connection is configured in a predetermined manner. it can. The position of the terminal portion 42 is determined in the component, and positioning can be accurately performed in component mounting. Since a plurality of terminal portions 42 are provided for each of the four electrode pieces, the electrical resistance can be reduced and the reliability of solder connection can be improved. Therefore, even in this embodiment, the solder connection can be stably obtained corresponding to a large current, and can be preferably applied to automated mounting.

図５，図６は、本発明の好適な実施形態を示している。本形態においてチョークコイルは、基本的には第１，第２の参考例と同様であり、棒状のフェライトコア１の外周に線材２を所定に巻き回してコイル３としている。そして、線材２は線径を太くする等により電流容量を増して大電流の用途に対応させる構成になっている。第１，第２の参考例と同様な構成には同一符号を付してあり、その説明を省略する。 5 and 6 show a preferred embodiment of the present invention. In this embodiment, the choke coil is basically the same as the first and second reference examples, and the wire 2 is wound around the outer periphery of the rod-shaped ferrite core 1 to form a coil 3. And the wire 2 is comprised so that it may respond to the use of a large current by increasing current capacity, for example by thickening a wire diameter. The same components as those in the first and second reference examples are denoted by the same reference numerals, and the description thereof is omitted.

本形態にあっては、電極片４は帯板材から形成しているが、図６（ｂ）に示すように、帯板材をクランク状に多段に曲げ加工して離れた２ヶ所に平面部位ができるようにしており、それらが２つの端子部４２，４２になる。そして、電極片４を２つ並列させて支持体５が両者間に渡り支持する配置とし、電極片４による２つ並びの部材上にフェライトコア１を位置させている。フェライトコア１は電極片４，４の並びに対して端面を固着させて縦向き配置とし、電極片４の一カ所に設けた孔部４３へリード端３１を嵌め合わせ、はんだ等により電気的に接続させる。 In this embodiment, the electrode piece 4 is formed of a strip plate material. However, as shown in FIG. 6B, the strip plate material is bent in multiple stages in a crank shape so that there are two flat portions. They are made to be two terminal portions 42, 42. Then, two electrode pieces 4 are arranged in parallel so that the support body 5 supports between them, and the ferrite core 1 is positioned on the two members arranged by the electrode pieces 4. The ferrite core 1 has an end face fixed to the arrangement of the electrode pieces 4 and 4 and is vertically arranged. The lead end 31 is fitted into a hole 43 provided at one position of the electrode piece 4 and electrically connected by solder or the like. Let

上述したように、電極片４は帯板材をクランク状に多段に曲げ加工し、離れた２ヶ所の平面部位が端子部４２，４２になっている。ここで、端子部４２はクランク状の多段の曲げ加工により両縁が立ち上がる形態としており、立ち上げ縁部４４を複数有する設定にしている。このチョークコイルの実装では、端子部４２をプリント基板のパターン部へ載せてはんだ付けを行うので、立ち上げ縁部４４には、はんだフィレットが成膜する。この場合、端子部４２には当該平坦部位を囲む縁部について、立ち上げ縁部４４を２つ有することからはんだフィレットも２つ成膜し、その結果、電気的な接続を確実に行うことができ、信頼性を高くできる。 As described above, the electrode piece 4 is formed by bending the strip plate material into a crank shape in multiple stages, and the two flat portions separated from each other are the terminal portions 42 and 42. Here, the terminal portion 42 has a form in which both edges rise by crank-shaped multistage bending, and has a plurality of rising edge portions 44. In mounting the choke coil, since the terminal portion 42 is placed on the pattern portion of the printed board and soldered, a solder fillet is formed on the rising edge portion 44. In this case, since the terminal portion 42 has two rising edge portions 44 at the edge portion surrounding the flat portion, two solder fillets are formed, and as a result, electrical connection can be reliably performed. Can be made highly reliable.

この場合も、コイル３のリード端３１は電極片４に接続し、電極片４には平面部位からなる端子部４２を設けるので、電極片４つまり電気接続のための端子部４２が所定に構成でき、端子部４２は当該部品において位置が定まり、部品実装において位置出しが正確に行える。そして、端子部４２は１つの電極片４つについて複数設けるので、電気抵抗を小さくできることはもちろん、はんだ接続について信頼性を向上できる。 Also in this case, since the lead end 31 of the coil 3 is connected to the electrode piece 4 and the electrode piece 4 is provided with the terminal portion 42 formed of a planar portion, the electrode piece 4, that is, the terminal portion 42 for electrical connection is configured in a predetermined manner. In addition, the position of the terminal portion 42 is determined in the component, and positioning can be accurately performed in component mounting. Since a plurality of terminal portions 42 are provided for each of the four electrode pieces, the electrical resistance can be reduced and the reliability of solder connection can be improved.

また、フェライトコア１はプリント基板に対して長手が直立する縦向きの取り付け姿勢になるので、部品の領有面積を小さくできるメリットがある。そして、フェライトコア１は直立する縦向き姿勢の上端が平面であることから、自動実装の際に吸着面とすることができる。したがって、高い精度で位置出しが行えてプリント基板の所定位置へ正確に搭載でき、自動化実装を高い信頼性で高品位に行うことができる。 Further, since the ferrite core 1 has a vertical mounting posture in which the longitudinal direction stands upright with respect to the printed circuit board, there is an advantage that the area occupied by the components can be reduced. And since the upper end of the upright vertical posture is a plane, the ferrite core 1 can be used as a suction surface during automatic mounting. Therefore, the positioning can be performed with high accuracy and the mounting can be accurately performed at a predetermined position of the printed circuit board, and the automatic mounting can be performed with high reliability and high quality.

したがって本形態にあっても、はんだ接続を大電流に対応させて安定に得ることができ、自動化実装に好ましく適用できる。 Therefore, even in this embodiment, the solder connection can be stably obtained corresponding to a large current, and can be preferably applied to automated mounting.

１フェライトコア
２線材
３コイル
３１リード端
４電極片
４１切り欠き部
４２端子部
４３孔部
４４立ち上げ縁部
５支持体 DESCRIPTION OF SYMBOLS 1 Ferrite core 2 Wire 3 Coil 31 Lead end 4 Electrode piece 41 Notch part 42 Terminal part 43 Hole part 44 Rising edge part 5 Support body

Claims

It has a rod-shaped ferrite core, a wire is wound around the periphery of the ferrite core to form a coil, and the wire is a choke coil that can be used for large current applications,
Two electrode pieces are supported in a parallel state separated from each other on the upper surface of a support made of an insulating material,
The ferrite core is arranged vertically by fixing its end face to the two electrode pieces,
The electrode pieces are formed by bending a strip-like metal plate material into a crank shape in multiple stages, and have flat portions on the outer sides of the opposing sides of the support, and the tip of one flat portion is bent upward. It becomes a rising edge and has a hole in the rising edge.
The plane part is a terminal part that contacts the pattern part of the printed circuit board,
A choke coil , wherein the lead end of the coil is fitted into the hole and electrically connected .

2. The choke coil according to claim 1 , wherein the rising edge portion in which the hole portion provided in the two electrode pieces is formed is formed on the same side of the support body .

The choke coil according to claim 1 or 2, wherein a tip end of the other planar portion of the electrode piece is also bent upward to form a rising edge .

The choke coil according to any one of claims 1 to 3, wherein the hole portion is a long hole extending in a vertical direction .

5. The choke coil according to claim 1, wherein the planar portion and the lower surface of the support are located on the same plane .