JP2021118272A

JP2021118272A - Coil device

Info

Publication number: JP2021118272A
Application number: JP2020010982A
Authority: JP
Inventors: 秀平染谷; Shuhei Someya; 良栄篠原; Ryoei Shinohara; 仁寛川崎; Hitohiro Kawasaki; せつ土田; Setsu Tsuchida
Original assignee: TDK Corp
Current assignee: TDK Corp
Priority date: 2020-01-27
Filing date: 2020-01-27
Publication date: 2021-08-10

Abstract

To provide a coil device low in DC resistance, and having excellent strength after being mounted.SOLUTION: A coil device 10 : a core portion 22 comprised of a magnetic body and having collar portions 24 and 26; a wire 41 wound around the core portion 22; and a terminal fitting 51 attached to a part of an outer surface of the collar portion. The terminal fitting 51 has: a terminal body 51a stuck to an outer surfaces of the collar portions 24 and 26; and a projecting plate portion 51b that is integrally formed with the terminal fitting body 51a and projects out separately from the collar portions 24 and 26. The projecting plate portion 51b has a wire connection surface 51c2 to which lead ends 41a and 41b of the wire 41 are connected, and a mounting surface 51c1 positioned on the opposite surface to the wire connection surface 51c2 and connected to an external circuit. Lower surfaces 24a and 26a of the collar portions 24 and 26 are separated from the wire connection surface 51c2 by a predetermined distance Z1.SELECTED DRAWING: Figure 1B

Description

本発明は、巻線型のコイル装置に関する。 The present invention relates to a winding type coil device.

巻線型のコイル装置としては、たとえば下記の特許文献１に示すコイル装置が知られている。特許文献１に示す従来の巻線型のコイル装置では、金属端子が、磁性体コアの鍔部に接着剤などで取り付けられ、金属端子の実装面から引き込まれた位置で、コイルを構成するワイヤの端部が接続されている。 As a winding type coil device, for example, the coil device shown in Patent Document 1 below is known. In the conventional winding type coil device shown in Patent Document 1, a metal terminal is attached to a flange of a magnetic core with an adhesive or the like, and a wire constituting the coil is formed at a position where the metal terminal is drawn from the mounting surface of the metal terminal. The ends are connected.

しかしながら、このような従来の構成のコイル装置を、たとえば電源用途に用いる場合には、金属端子の実装面とワイヤ端部の接続部とが離れているため、直流抵抗の増大が課題となる。また、このような従来の構成のコイル装置では、コアの下面が実装面に近いため、外部回路基板の熱変形などによる応力がコアに直接に伝わりやすく、実装後の強度が課題である。 However, when a coil device having such a conventional configuration is used for power supply, for example, the mounting surface of the metal terminal and the connecting portion of the wire end are separated from each other, so that an increase in DC resistance becomes a problem. Further, in the coil device having such a conventional configuration, since the lower surface of the core is close to the mounting surface, stress due to thermal deformation of the external circuit board is easily transmitted directly to the core, and the strength after mounting is an issue.

特開２０１８−５６３９９号公報Japanese Unexamined Patent Publication No. 2018-56399

本発明は、このような実状に鑑みてなされ、その目的は、直流抵抗が低く、しかも実装後の強度にも優れたコイル装置を提供することである。 The present invention has been made in view of such an actual situation, and an object of the present invention is to provide a coil device having low DC resistance and excellent strength after mounting.

上記目的を達成するために、本発明に係るコイル装置は、
磁性体で構成され、鍔部を有する巻芯部と、
前記巻芯部に巻回してあるワイヤと、
前記鍔部の外面の一部に取り付けられる端子具と、を有するコイル装置であって、
前記端子具が、
前記鍔部の外面に接触している端子本体と、
前記端子本体と一体に成形してあり、前記鍔部から離れて突出している突出板部とを有し、
前記突出板部は、前記ワイヤのリード端が接続されるワイヤ接続面と、前記ワイヤ接続面の近傍に位置して外部回路に接続される実装面とを有し、
前記鍔部の下面が、前記ワイヤ接続面に対して、所定距離で離れている。 In order to achieve the above object, the coil device according to the present invention
A core part that is made of magnetic material and has a collar part,
The wire wound around the core and
A coil device having a terminal tool attached to a part of the outer surface of the collar portion.
The terminal tool
The terminal body that is in contact with the outer surface of the collar
It has a protruding plate portion that is integrally molded with the terminal body and protrudes away from the collar portion.
The protruding plate portion has a wire connecting surface to which the lead end of the wire is connected and a mounting surface located in the vicinity of the wire connecting surface and connected to an external circuit.
The lower surface of the flange portion is separated from the wire connecting surface by a predetermined distance.

本発明のコイル装置では、端子具の突出板部は、ワイヤのリード端が接続されるワイヤ接続面と、ワイヤ接続面の近傍に位置して外部回路に接続される実装面とを有する。そのため、ワイヤ接続面と実装面との距離が近づき、ワイヤのリード端の接続部から外部回路へと至る端子具の直流抵抗を極端に下げることが可能になり、コイル装置の全体としての直流抵抗も極端に小さくすることができる。そのため、本発明のコイル装置は、電源用途に好ましく用いることができる。 In the coil device of the present invention, the protruding plate portion of the terminal tool has a wire connecting surface to which the lead end of the wire is connected and a mounting surface located near the wire connecting surface and connected to an external circuit. Therefore, the distance between the wire connection surface and the mounting surface becomes short, and the DC resistance of the terminal tool from the connection part of the wire lead end to the external circuit can be extremely reduced, and the DC resistance of the coil device as a whole becomes possible. Can also be made extremely small. Therefore, the coil device of the present invention can be preferably used for power supply applications.

また、本発明のコイル装置を信号系用途に用いる場合でも、挿入損失（ＩＬ／インサーションロス）の増大を抑制することが可能となり、信号系用途にも好ましく用いることができる。 Further, even when the coil device of the present invention is used for a signal system application, it is possible to suppress an increase in insertion loss (IL / insertion loss), and the coil device can be preferably used for a signal system application.

さらに、本発明のコイル装置では、鍔部の下面が、ワイヤ接続面に対して、所定距離で離れているため、必然的に、鍔部の下面は、実装面に対して、所定の隙間で浮き上がった状態で、鍔部を有する巻芯部が端子具で保持される。すなわち、鍔部を有する巻芯部は、実装面から遠くなり、実装面で接続される外部回路基板の熱変形などによる応力が鍔部および巻芯部に直接に伝わり難くなり、実装後の強度が向上する。本発明のコイル装置は、１５０°Ｃ以上の高温でも使用可能であり、耐熱性にも優れている。 Further, in the coil device of the present invention, since the lower surface of the collar portion is separated from the wire connecting surface by a predetermined distance, the lower surface of the collar portion is inevitably separated from the mounting surface by a predetermined gap. In the raised state, the winding core portion having the flange portion is held by the terminal tool. That is, the winding core portion having the flange portion is far from the mounting surface, and stress due to thermal deformation of the external circuit board connected on the mounting surface is less likely to be directly transmitted to the flange portion and the winding core portion, and the strength after mounting. Is improved. The coil device of the present invention can be used even at a high temperature of 150 ° C. or higher, and has excellent heat resistance.

好ましくは、前記実装面が、前記突出板部の先端部で、前記ワイヤ接続面の反対側に位置する。この場合には、ワイヤ接続面と実装面とは、突出板部のほぼ厚みのみで近接し、ワイヤのリード端の接続部から外部回路へと至る端子具の直流抵抗を、さらに低下させることができる。 Preferably, the mounting surface is located at the tip of the protruding plate portion on the opposite side of the wire connecting surface. In this case, the wire connection surface and the mounting surface are close to each other only by the thickness of the protruding plate portion, and the DC resistance of the terminal tool from the connection portion at the lead end of the wire to the external circuit can be further reduced. can.

好ましくは、前記突出板部は、
前記鍔部の下方に位置する少なくとも一つの主実装基部を有し、
前記主実装基部に、前記実装面と前記ワイヤ接続面が形成してある。 Preferably, the protruding plate portion is
It has at least one main mounting base located below the collar.
The mounting surface and the wire connecting surface are formed on the main mounting base.

実装面とワイヤ接続面とが形成してある主実装基部を、鍔部の下方に位置させることで、巻芯部へのワイヤの自動巻線作業が、さらに容易になる。ワイヤのリード端を主実装基部のワイヤ接続面に仮止めしやすくなり、ワイヤに対する負荷が軽減され、ワイヤにダメージを与えること無く巻線部に巻回しやすくなる。 By locating the main mounting base portion formed by the mounting surface and the wire connecting surface below the flange portion, the automatic winding operation of the wire to the winding core portion becomes easier. It becomes easier to temporarily fix the lead end of the wire to the wire connection surface of the main mounting base, the load on the wire is reduced, and it becomes easier to wind the wire around the winding portion without damaging the wire.

好ましくは、前記主実装基部は、前記端子本体と同一平面上に位置する前記突出板部から前記鍔部の下方に向けて折り曲げて成形してある。このように構成することで、実装面とワイヤ接続面とが形成してある主実装基部を、鍔部の下方に位置させ易くなる。 Preferably, the main mounting base portion is formed by bending from the protruding plate portion located on the same plane as the terminal body toward the lower side of the collar portion. With this configuration, the main mounting base on which the mounting surface and the wire connecting surface are formed can be easily positioned below the flange portion.

好ましくは、前記突出板部は、前記主実装基部の先端側で折り返して曲げられる先端折曲部をさらに有し、前記ワイヤのリード端は、前記先端折曲部と前記主実装基部との間に挟まれる。ワイヤのリード端を先端折曲部と基部との間に挟み込むことで、リード端の端子具への仮止めおよび接続作業が容易になる。 Preferably, the protruding plate portion further has a tip bent portion that is folded back and bent on the tip end side of the main mounting base portion, and the lead end of the wire is between the tip bent portion and the main mounting base portion. It is sandwiched between. By sandwiching the lead end of the wire between the bent tip portion and the base portion, temporary fixing and connection work of the lead end to the terminal tool becomes easy.

前記突出板部は、前記主実装基部以外に、副実装基部を有してもよく、副実装基部には、前記ワイヤのリード端が接続されなくてもよい。なお、副実装基部にもワイヤのリード端が接続されるワイヤ接続面を実装面と共に形成してもよい。副実装基部を設けることで、コイル装置の実装強度が向上すると共に、コイル装置を安定して回路基板などに実装することが容易になる。 The protruding plate portion may have a sub-mounting base portion in addition to the main mounting base portion, and the lead end of the wire may not be connected to the sub-mounting base portion. A wire connection surface to which the lead end of the wire is connected may also be formed on the sub-mounting base together with the mounting surface. By providing the sub-mounting base, the mounting strength of the coil device is improved, and the coil device can be stably mounted on a circuit board or the like.

なお、前記先端折曲部の表面と裏面に、前記ワイヤ接続面および前記実装面がそれぞれ形成してあっても良い。あるいは、前記先端折曲部に対応する前記基部の表面と裏面に、前記ワイヤ接続面および前記実装面がそれぞれ形成してあってもよい。あるいは、突出板部には、先端折曲部が無くても良い。 The wire connecting surface and the mounting surface may be formed on the front surface and the back surface of the tip bent portion, respectively. Alternatively, the wire connecting surface and the mounting surface may be formed on the front surface and the back surface of the base portion corresponding to the tip bent portion, respectively. Alternatively, the protruding plate portion may not have a bent tip portion.

好ましくは、前記鍔部の下面が、前記ワイヤ接続面に対して、前記突出板部の厚みの２倍以上の前記所定距離で離れている。このように構成することで、実装面で接続される外部回路基板の熱変形などによる応力が、さらに鍔部および巻芯部に直接に伝わり難くなり、実装後の強度が向上する。 Preferably, the lower surface of the flange portion is separated from the wire connecting surface by the predetermined distance of twice or more the thickness of the protruding plate portion. With this configuration, stress due to thermal deformation of the external circuit board connected on the mounting surface is less likely to be directly transmitted to the flange portion and the winding core portion, and the strength after mounting is improved.

好ましくは、前記鍔部の外端面には、前記端子具の端子本体が取り付けられる端子取付面が段差状に凹んで形成してある。このように構成することで、端子具を鍔部の外端面に位置決めして取り付けやすくなる。 Preferably, the outer end surface of the collar portion is formed with a stepped terminal mounting surface on which the terminal body of the terminal tool is mounted. With such a configuration, the terminal tool can be easily attached by positioning it on the outer end surface of the collar portion.

前記鍔部の側面には、前記端子具の嵌合片が取り付けられる端子嵌合面が段差状に凹んで形成してあっても良い。このように構成することで、さらに端子具を鍔部の外端面に位置決めして取り付けやすくなる。また、接着剤を用いること無く端子具を嵌合片のみで鍔部に取り付けてもよい。なお、接着剤を併用して端子具を鍔部の外端面に取り付けてもよい。 On the side surface of the collar portion, a terminal fitting surface on which the fitting piece of the terminal tool is attached may be formed by being recessed in a stepped shape. With such a configuration, the terminal tool can be more easily positioned and attached to the outer end surface of the collar portion. Further, the terminal tool may be attached to the collar portion only by the fitting piece without using an adhesive. The terminal tool may be attached to the outer end surface of the collar portion by using an adhesive in combination.

前記端子本体には、好ましくは前記嵌合片が形成される位置に対応して、あるいは、対応させること無く、切り欠きが形成してあってもよい。切り欠きを形成することで、応力緩衝作用がさらに向上し、鍔部を有する巻芯部へ伝わる熱応力などの外力が、さらに低減される。 A notch may be formed in the terminal body, preferably corresponding to or not corresponding to the position where the fitting piece is formed. By forming the notch, the stress buffering action is further improved, and the external force such as thermal stress transmitted to the winding core portion having the flange portion is further reduced.

前記実装面と反対側に位置する前記鍔部の外面には、板状部材が接合してあってもよい。板状部材は、磁性体部材であってもよく、非磁性体部材でもよい。また、板状部材は、樹脂を塗布して形成してある部材でもよい。これらの板状部材は、平坦面を有することが好ましい。平坦面には、ピックアップ用吸着部材が着脱自在に吸着可能であり、ハンドリング性が向上する。 A plate-shaped member may be joined to the outer surface of the flange portion located on the side opposite to the mounting surface. The plate-shaped member may be a magnetic member or a non-magnetic member. Further, the plate-shaped member may be a member formed by applying a resin. These plate-shaped members preferably have a flat surface. A suction member for pickup can be detachably attached to the flat surface to improve handleability.

図１Ａは本発明の一実施形態に係るコイル装置の斜視図である。FIG. 1A is a perspective view of a coil device according to an embodiment of the present invention. 図１Ｂは図１Ａに示すコイル装置の側面図である。FIG. 1B is a side view of the coil device shown in FIG. 1A. 図１Ｃは図１Ａに示すコイル装置の正面図である。FIG. 1C is a front view of the coil device shown in FIG. 1A. 図１Ｄは図１Ａに示すコイル装置の底面図である。FIG. 1D is a bottom view of the coil device shown in FIG. 1A. 図２は図１Ａに示すコイル装置のドラム型コアの斜視図である。FIG. 2 is a perspective view of the drum type core of the coil device shown in FIG. 1A. 図３は図１Ａに示すコイル装置の端子金具の斜視図である。FIG. 3 is a perspective view of the terminal fitting of the coil device shown in FIG. 1A. 図４Ａは本発明の他の実施形態に係るコイル装置の斜視図である。FIG. 4A is a perspective view of a coil device according to another embodiment of the present invention. 図４Ｂは本発明のさらに他の実施形態に係るコイル装置の斜視図である。FIG. 4B is a perspective view of a coil device according to still another embodiment of the present invention. 図４Ｃは本発明のさらに他の実施形態に係るコイル装置の斜視図である。FIG. 4C is a perspective view of a coil device according to still another embodiment of the present invention.

以下、本発明を、図面に示す実施形態に基づき説明する。 Hereinafter, the present invention will be described based on the embodiments shown in the drawings.

第１実施形態
図１Ａ〜図１Ｃに示す本発明の一実施形態に係るコイル装置１０は、たとえば巻線型の高温対応のインダクタなどとして用いられるが、その用途は、特に限定されず、たとえば高周波デカップリングコイル、コモンモードフィルタ、バラン、デュアルインダクタなどとしても用いることができる。 1st Embodiment The coil device 10 according to the embodiment of the present invention shown in FIGS. 1A to 1C is used, for example, as a winding type inductor for high temperature, but its use is not particularly limited, and for example, a high frequency decup is used. It can also be used as a ring coil, common mode filter, balun, dual inductor, etc.

コイル装置１０は、ドラムコア２０と、ドラムコア２０の巻芯部２２に巻回されたコイル部４０と、ドラムコア２０の上部に配置される平板部材３０と、を有する。なお、コイル装置１０の説明では、コイル装置１０を実装する実装面と平行な面内にありドラムコア２０の巻芯部２２の巻軸と平行な方向をＸ軸、Ｘ軸と同じく実装面と平行な面内にありＸ軸と垂直な方向をＹ軸方向、実装面の法線方向をＺ軸方向とする。 The coil device 10 includes a drum core 20, a coil portion 40 wound around a winding core portion 22 of the drum core 20, and a flat plate member 30 arranged above the drum core 20. In the description of the coil device 10, the direction in which the coil device 10 is mounted and parallel to the mounting surface and the direction parallel to the winding axis of the winding core portion 22 of the drum core 20 is parallel to the X-axis and the mounting surface as well as the X-axis. The direction in the plane and perpendicular to the X-axis is the Y-axis direction, and the normal direction of the mounting surface is the Z-axis direction.

図２に示すように、ドラムコア２０は、Ｘ軸方向に延びる棒状の巻芯部２２と、巻芯部２２の両端に備えられる一対のコア端部としての第１鍔部２４および第２鍔部２６と、を有する。第１鍔部２４と第２鍔部２６とは、略同じ形状を有し、これらは、Ｘ軸方向に関して所定の間隔を空けて、互いに略平行になるように巻芯部２２に具備してある。 As shown in FIG. 2, the drum core 20 includes a rod-shaped winding core portion 22 extending in the X-axis direction, and a first flange portion 24 and a second flange portion as a pair of core ends provided at both ends of the winding core portion 22. 26 and. The first flange portion 24 and the second flange portion 26 have substantially the same shape, and these are provided on the winding core portion 22 so as to be substantially parallel to each other at a predetermined interval in the X-axis direction. be.

巻芯部２２は、一対の鍔部２４，２６において互いに向かい合うそれぞれの面の略中央部に接続しており、一対の鍔部２４，２６に一体化している。巻芯部２２の横断面形状は、本実施形態では矩形であるが、円形でも良く、その断面形状は特に限定されない。 The winding core portion 22 is connected to a substantially central portion of each of the pair of collar portions 24, 26 facing each other, and is integrated with the pair of collar portions 24, 26. The cross-sectional shape of the winding core portion 22 is rectangular in the present embodiment, but may be circular, and the cross-sectional shape thereof is not particularly limited.

ドラムコア２０のＺ軸方向の上端部には、図１Ａに示す板状部材３０が接着してあることが好ましい。板状部材３０は、第１鍔部２４の反実装側コア面２４ｂと、第２鍔部２６の反実装側コア面２６ｂとを掛け渡すように、これらの反実装側コア面に接合してあることが好ましい。 It is preferable that the plate-shaped member 30 shown in FIG. 1A is adhered to the upper end portion of the drum core 20 in the Z-axis direction. The plate-shaped member 30 is joined to these anti-mounting side core surfaces so as to cross the anti-mounting side core surface 24b of the first flange portion 24 and the anti-mounting side core surface 26b of the second flange portion 26. It is preferable to have.

図２に示すように、第１鍔部２４は、本実施形態では、全体として直方体で構成してある。第１鍔部２４は、Ｚ軸方向の下面である実装側コア面２４ａと、その反対側の反実装側コア面２４ｂと、Ｘ軸方向の外端面２４ｃと、巻芯部２２の方向を向いている内面２４ｄと、Ｙ軸方向の相互に反対側に位置する一対の側面２４ｅ，２４ｅと、を有している。 As shown in FIG. 2, the first flange portion 24 is formed of a rectangular parallelepiped as a whole in the present embodiment. The first flange portion 24 faces the mounting side core surface 24a, which is the lower surface in the Z-axis direction, the anti-mounting side core surface 24b on the opposite side, the outer end surface 24c in the X-axis direction, and the winding core portion 22. It has an inner surface 24d and a pair of side surfaces 24e and 24e located on opposite sides in the Y-axis direction.

また、同様に、第２鍔部２６は、本実施形態では、全体として直方体で構成してある。第２鍔部２６は、Ｚ軸方向の下面である実装側コア面２６ａと、その反対側の反実装側コア面２６ｂと、Ｘ軸方向の外端面２６ｃと、巻芯部２２の方向を向いている内面２６ｄと、Ｙ軸方向の相互に反対側に位置する一対の側面２６ｅ，２６ｅと、を有している。 Similarly, in the present embodiment, the second flange portion 26 is composed of a rectangular parallelepiped as a whole. The second flange portion 26 faces the mounting side core surface 26a, which is the lower surface in the Z-axis direction, the anti-mounting side core surface 26b on the opposite side, the outer end surface 26c in the X-axis direction, and the winding core portion 22. It has an inner surface 26d and a pair of side surfaces 26e and 26e located on opposite sides in the Y-axis direction.

外端面２４ｃ（２６ｃ）のＺ軸方向の下方には、外端面２４ｃ（２６ｃ）よりもＸ軸方向の内側（コア２０の中心側）に段差状に凹んでいる端子取付面２４ｃ１（２６ｃ１）が形成してある。端子取付面２４ｃ１（２６ｃ１）には、図１Ａに示すように、端子（導電性の端子具）５１が取り付けられる。図２に示すそれぞれの端子取付面２４ｃ１（２６ｃ１）には、図３に示す端子５１の端子本体５１ａの内面が取り付けられ、必要に応じて接着される。 Below the outer end surface 24c (26c) in the Z-axis direction, there is a terminal mounting surface 24c1 (26c1) recessed in a stepped shape inward in the X-axis direction (center side of the core 20) than the outer end surface 24c (26c). It is formed. As shown in FIG. 1A, terminals (conductive terminals) 51 are attached to the terminal attachment surface 24c1 (26c1). The inner surface of the terminal body 51a of the terminal 51 shown in FIG. 3 is attached to each of the terminal mounting surfaces 24c1 (26c1) shown in FIG. 2, and is adhered as needed.

図２に示す外端面２４ｃ（２６ｃ）に対して端子取付面２４ｃ１（２６ｃ１）がＸ軸方向の内側に引き込まれている段差深さは、図３に示す端子５１の板厚程度が好ましいが、それよりも浅くてもよく、深くてもよい。 The step depth at which the terminal mounting surface 24c1 (26c1) is pulled inward in the X-axis direction with respect to the outer end surface 24c (26c) shown in FIG. 2 is preferably about the plate thickness of the terminal 51 shown in FIG. It may be shallower or deeper than that.

また、図２に示す両側の側面２４ｅ（２６ｅ）のＺ軸方向の下方には、側面２４ｅ（２６ｅ）よりもＹ軸方向の内側（コア２０の中心側）に段差状に凹んでいる端子嵌合面２４ｅ１（２６ｅ１）が形成してある。端子嵌合面２４ｅ１（２６ｅ１）には、図３に示す端子（導電性の端子具）５１の端子本体５１ａのＺ軸上側でＹ軸方向の両側からそれぞれ一体的に折り曲げて形成してある嵌合片５１ｅが、それ自身の弾力で嵌合するようになっている。 Further, below the side surfaces 24e (26e) on both sides shown in FIG. 2 in the Z-axis direction, terminal fittings recessed in a stepped shape inward in the Y-axis direction (center side of the core 20) from the side surfaces 24e (26e). A mating surface 24e1 (26e1) is formed. The terminal fitting surface 24e1 (26e1) is integrally bent from both sides in the Y-axis direction on the Z-axis upper side of the terminal body 51a of the terminal (conductive terminal tool) 51 shown in FIG. The unit 51e is adapted to fit with its own elasticity.

なお、各嵌合片５１ｅのＺ軸方向幅は、各鍔部２４（２６）の端子嵌合面２４ｅ１（２６ｅ１）のＺ軸方向幅よりも小さく、各嵌合片５１ｅのＺ軸方向上端が、側面２４ｅ（２６ｅ）との段差部に突き当てられるようになっている。また、端子嵌合面２４ｅ１（２６ｅ１）には、各嵌合片５１ｅが接触する部分のみで、さらに内側に凹んでいる嵌合凹部が形成してあってもよい。 The width of each fitting piece 51e in the Z-axis direction is smaller than the width of the terminal fitting surface 24e1 (26e1) of each flange portion 24 (26) in the Z-axis direction, and the upper end of each fitting piece 51e in the Z-axis direction is , It is designed to be abutted against a step portion with the side surface 24e (26e). Further, the terminal fitting surface 24e1 (26e1) may be formed with a fitting recess that is recessed inward only at a portion where each fitting piece 51e contacts.

なお、本実施形態では、各嵌合片５１ｅは、各鍔部２４（２６）の端子嵌合面２４ｅ１（２６ｅ１）の少なくとも一部に接触して嵌合する。しかしながら、端子本体５１ａの内面が鍔部２４（２６）の端子取付面２４ｃ１（２６ｃ１）に接着される場合には、各嵌合片５１ｅは、各鍔部２４（２６）の端子嵌合面２４ｅ１（２６ｅ１）に接触しなくてもよい。本実施形態では、端子本体５１ａの内面のみが鍔部２４（２６）の端子取付面２４ｃ１（２６ｃ１）に接着され、しかも各嵌合片５１ｅは、各鍔部２４（２６）の端子嵌合面２４ｅ１（２６ｅ１）に接触して嵌合する。 In the present embodiment, each fitting piece 51e comes into contact with and fits at least a part of the terminal fitting surface 24e1 (26e1) of each flange portion 24 (26). However, when the inner surface of the terminal body 51a is adhered to the terminal mounting surface 24c1 (26c1) of the collar portion 24 (26), each fitting piece 51e has a terminal fitting surface 24e1 of each collar portion 24 (26). It is not necessary to contact (26e1). In the present embodiment, only the inner surface of the terminal body 51a is adhered to the terminal mounting surface 24c1 (26c1) of the collar portion 24 (26), and each fitting piece 51e is the terminal fitting surface of each collar portion 24 (26). It contacts and fits into 24e1 (26e1).

図２に示す側面２４ｅ（２６ｅ）に対して端子嵌合面２４ｅ１（２６ｅ１）がＹ軸方向の内側に引き込まれている段差深さは、図３に示す端子５１の板厚程度が好ましいが、それよりも浅くてもよく、深くてもよい。本実施形態では、図２に示す外端面２４ｃ（２６ｃ）に形成してある端子取付面２４ｃ１（２６ｃ１）との段差部と、側面２４ｅ（２６ｅ）に形成してある端子嵌合面２４ｅ１（２６ｅ１）との段差部とは、Ｚ軸方向の位置が同じであるが、それぞれ相互に異なっていてもよい。 The step depth at which the terminal fitting surface 24e1 (26e1) is pulled inward in the Y-axis direction with respect to the side surface 24e (26e) shown in FIG. 2 is preferably about the plate thickness of the terminal 51 shown in FIG. It may be shallower or deeper than that. In the present embodiment, a step portion with the terminal mounting surface 24c1 (26c1) formed on the outer end surface 24c (26c) shown in FIG. 2 and a terminal fitting surface 24e1 (26e1) formed on the side surface 24e (26e). ) And the stepped portion have the same position in the Z-axis direction, but they may be different from each other.

また、本実施形態では、端子本体５１ａには、嵌合片５１ｅが形成されるＺ軸方向の下側位置に対応して、一対の切り欠き５１ａ１が、Ｙ軸に沿って、端子本体５１ａの両側から所定距離で離れて形成してある。すなわち、嵌合片５１ｅのＺ軸方向の下端位置と、一対の切り欠き５１ａ１の形成位置とが略一致している。なお、切り欠き５１ａ１は、必ずしもＹ軸に平行に形成する必要はなく、Ｙ軸に対して傾斜していてもよい。また、切り欠き５１ａ１は、必ずしも嵌合片５１ｅのＺ軸方向の下端位置に対応させて形成する必要はない。 Further, in the present embodiment, the terminal body 51a has a pair of notches 51a1 corresponding to the lower position in the Z-axis direction in which the fitting piece 51e is formed, along the Y-axis of the terminal body 51a. It is formed at a predetermined distance from both sides. That is, the lower end position of the fitting piece 51e in the Z-axis direction and the forming position of the pair of notches 51a1 substantially coincide with each other. The notch 51a1 does not necessarily have to be formed parallel to the Y axis, and may be inclined with respect to the Y axis. Further, the notch 51a1 does not necessarily have to be formed so as to correspond to the lower end position of the fitting piece 51e in the Z-axis direction.

本実施形態では、図２に示す鍔部２４に取り付けられる端子５１と、鍔部２６に取り付けられる端子５１とは、本実施形態では、同じ構成を有している。 In the present embodiment, the terminal 51 attached to the collar portion 24 and the terminal 51 attached to the collar portion 26 shown in FIG. 2 have the same configuration in the present embodiment.

端子５１は、導電性端子板などで構成され、たとえば金属板などの一枚の導電性板材から折曲成形してある端子本体５１ａと突出板部５１ｂとを有する。端子本体５１ａは、図２に示す鍔部２４の外端面２４ｃに形成してある端子取付面２４ｃ１に接着剤などで取り付けられる平板形状を有する。 The terminal 51 is made of a conductive terminal plate or the like, and has a terminal main body 51a and a protruding plate portion 51b that are bent and molded from a single conductive plate material such as a metal plate. The terminal body 51a has a flat plate shape that is attached to the terminal mounting surface 24c1 formed on the outer end surface 24c of the collar portion 24 shown in FIG. 2 with an adhesive or the like.

図３に示す端子本体５１ａは、図２に示す鍔部２４の端子取付面２４ｃ１に接着剤などで固定され、端子取付面２４ｃ１に所定の隙間（隙間０でもよい）で密着する。端子本体５１ａは、前述したように、一対の端子係合片５１ｅと、切り欠き５１ａ１とを有している。 The terminal body 51a shown in FIG. 3 is fixed to the terminal mounting surface 24c1 of the flange portion 24 shown in FIG. 2 with an adhesive or the like, and adheres to the terminal mounting surface 24c1 with a predetermined gap (a gap of 0 may be used). As described above, the terminal body 51a has a pair of terminal engaging pieces 51e and a notch 51a1.

図３に示す端子本体５１ａには、図２に示す鍔部２４の下端で、鍔部２４の実装側コア面２４ａからＺ軸方向の下側に突出する図３に示す突出板部５１ｂが一体に成形してある。突出板部５１ｂは、端子本体５１ａと面一にＺ軸方向の下方向に伸びる。突出板部５１ｂは、そのＺ軸方向の下端から内側に一体的に折り曲げてある主実装基部５１ｃと、同様に、そのＺ軸方向の下端から内側に一体的に折り曲げてある副実装基部５１ｃαとを有する。 The terminal body 51a shown in FIG. 3 is integrated with a protruding plate portion 51b shown in FIG. 3 which projects downward from the mounting side core surface 24a of the collar portion 24 in the Z-axis direction at the lower end of the collar portion 24 shown in FIG. It is molded into. The projecting plate portion 51b extends downward in the Z-axis direction so as to be flush with the terminal body 51a. The protruding plate portion 51b includes a main mounting base 51c that is integrally bent inward from the lower end in the Z-axis direction, and a sub-mounting base 51cα that is integrally bent inward from the lower end in the Z-axis direction. Has.

主実装基部５１ｃと副実装基部５１ｃαとは、突出板部５１ｂのＹ軸方向の両側で所定距離で離れて、突出板部５１ｂのＺ軸方向の下部にそれぞれ形成してあるが、これらは、一体的に形成してあってもよい。なお、本実施形態では、これらは別々に成形してあることとして説明する。 The main mounting base 51c and the sub-mounting base 51cα are separated from each other by a predetermined distance on both sides of the protruding plate portion 51b in the Y-axis direction, and are formed at the lower portion of the protruding plate portion 51b in the Z-axis direction. It may be formed integrally. In this embodiment, it will be described that these are molded separately.

本実施形態では、主実装基部５１ｃと副実装基部５１ｃαとは、突出板部５１ｂの下端で、それぞれ同じ方向に折り曲げられ、それぞれ、図２に示す鍔部２４または鍔部２６の実装側コア面２４ａまたは２６ａの下方に位置する。 In the present embodiment, the main mounting base 51c and the sub-mounting base 51cα are bent in the same direction at the lower ends of the projecting plate 51b, and the mounting-side core surfaces of the collar 24 or the collar 26 shown in FIG. 2, respectively. It is located below 24a or 26a.

主実装基部５１ｃは、その先端から折り返して曲げられている先端折曲部５１ｄとを有する。本実施形態では、基部５１ｃの先端部で、先端折曲片５１ｄがＺ軸方向の上側に折り返すように曲げてあり、先端折曲部５１ｄの反対側に位置する主実装基部５１ｃの外面が、実装面５１ｃ１となり、先端折曲片５１ｄが位置する主実装基部５１ｃの内面が継線面（ワイヤ接続面）５１ｃ２となる。 The main mounting base 51c has a tip bent portion 51d that is bent back from the tip thereof. In the present embodiment, at the tip of the base 51c, the tip bent piece 51d is bent so as to be folded upward in the Z-axis direction, and the outer surface of the main mounting base 51c located on the opposite side of the tip bent portion 51d is formed. It becomes the mounting surface 51c1, and the inner surface of the main mounting base 51c where the tip bent piece 51d is located becomes the connecting wire surface (wire connecting surface) 51c2.

また、副実装基部５１ｃαは、その先端から折り返して曲げられている先端折曲部５１ｄを有さないが、副実装基部５１ｃαの外面（下面）が、実装面５１ｃα１となり、その反対面である副実装基部５１ｃαの内面には、継線面（ワイヤ接続面）が形成されないが、形成されてもよい。 Further, the sub-mounting base 51cα does not have a tip bent portion 51d that is bent back from the tip thereof, but the outer surface (lower surface) of the sub-mounting base 51cα becomes the mounting surface 51cα1 and is the opposite surface thereof. A joint wire surface (wire connection surface) is not formed on the inner surface of the mounting base 51cα, but it may be formed.

図１Ｂに示すように、主実装基部５１ｃの継線面５１ｃ２と先端折曲部５１ｄとの間に、コイル部４０を構成するワイヤ４１の一方の引出部のリード端４１ａが挟まれてカシメられる。カシメられた後は、ハンダ付けまたはレーザ溶接などにより端子５１とワイヤ４１のリード端４１ａとを接続してもよい。 As shown in FIG. 1B, the lead end 41a of one of the lead portions of the wire 41 constituting the coil portion 40 is sandwiched and crimped between the connecting surface 51c2 of the main mounting base 51c and the tip bent portion 51d. .. After caulking, the terminal 51 and the lead end 41a of the wire 41 may be connected by soldering or laser welding.

本実施形態では、主実装基部５１ｃの実装面５１ｃ１と副実装基部の実装面５１祖α１とは、面一の外面となり、主として、実装面５１ｃ１が外部回路基板（図示省略）の回路パターンに接続されるが、実装面５１ｃα１も同時に接続されてもよい。外部回路基板（図示省略）の回路パターンへの接続方法は、特に限定されないが、たとえばハンダ接合が例示される。 In the present embodiment, the mounting surface 51c1 of the main mounting base 51c and the mounting surface 51 ancestor α1 of the sub-mounting base are flush outer surfaces, and the mounting surface 51c1 is mainly connected to a circuit pattern of an external circuit board (not shown). However, the mounting surface 51cα1 may also be connected at the same time. The method of connecting the external circuit board (not shown) to the circuit pattern is not particularly limited, and for example, solder bonding is exemplified.

本実施形態では、図１Ｂに示すように、ワイヤ４１の一方の引出部のリード端４１ａは、第１鍔部２４に装着してある端子５１の継線面５１ｃ２に接合してあり、ワイヤ４１の他方の引出部のリード端４１ｂは、第２鍔部２６に装着してある端子５１の継線面５１ｃ２に接合してある。これらの接合のための手段としては、特に限定されず、レーザ溶接、ハンダ付けなどが好ましいが、これに限らず、溶接、抵抗溶接、超音波溶接、カシメ止め、熱圧着、熱融着などが例示される。 In the present embodiment, as shown in FIG. 1B, the lead end 41a of one of the lead portions of the wire 41 is joined to the connecting surface 51c2 of the terminal 51 mounted on the first flange portion 24, and the wire 41 The lead end 41b of the other lead-out portion is joined to the connecting wire surface 51c2 of the terminal 51 mounted on the second flange portion 26. The means for these bonding is not particularly limited, and laser welding, soldering and the like are preferable, but the present invention is not limited to this, and welding, resistance welding, ultrasonic welding, caulking, thermocompression bonding, heat fusion and the like are used. Illustrated.

ドラムコア２０の巻芯部２２には、コイル部４０が形成されている。コイル部４０は、本実施形態では、１本のワイヤ４１により構成される。ワイヤ４１は、たとえば被覆導線で構成してあり、良導体（たとえば銅線）からなる芯材を絶縁性の被覆膜で覆った構成を有しており、巻芯部２２に、たとえば単層または多層構造で巻回されている。 A coil portion 40 is formed in the winding core portion 22 of the drum core 20. In the present embodiment, the coil portion 40 is composed of one wire 41. The wire 41 is composed of, for example, a coated conductor, and has a structure in which a core material made of a good conductor (for example, a copper wire) is covered with an insulating coating film, and the winding core portion 22 is formed of, for example, a single layer or. It is wound in a multi-layer structure.

コイル装置１０の製造では、まず、図３に示すそれぞれ一対の端子５１を図２に示すドラムコア２０に取り付ける。各端子５１の外端面端子本体５１ａ１，５２ａ１の内面のみが、端子取付面２４ｃ１または２６ｃ１に各々接着されることが好ましい。 In the manufacture of the coil device 10, first, a pair of terminals 51 shown in FIG. 3 are attached to the drum core 20 shown in FIG. It is preferable that only the inner surfaces of the terminal bodies 51a1 and 52a1 on the outer end surface of each terminal 51 are adhered to the terminal mounting surfaces 24c1 or 26c1, respectively.

本実施形態では、図１Ｂに示すように、ドラムコア２０の鍔部２４，２６の下面である実装側コア面２４ａ，２６ａと、各端子５１の継線面５１ｃ２，５２ｃ２との間の所定距離Ｚ１が所定以上となるように、各端子５１が鍔部２４，２６に取り付けられる。 In the present embodiment, as shown in FIG. 1B, a predetermined distance Z1 between the mounting side core surfaces 24a and 26a, which are the lower surfaces of the flange portions 24 and 26 of the drum core 20, and the connecting surface 51c2 and 52c2 of each terminal 51. Each terminal 51 is attached to the flange portions 24 and 26 so that the number is equal to or greater than a predetermined value.

このようにして製造された端子５１および５２付きのドラム型のドラムコア２０と平板部材３０とワイヤ４１とを準備する。ドラムコア２０は、磁性体で構成され、たとえば、比較的透磁率の高い磁性材料、たとえばＮｉ−Ｚｎ系フェライトや、Ｍｎ−Ｚｎ系フェライト、あるいは金属磁性体などで構成してある磁性粉体を、成型および焼結することにより作製される。好ましくは、平板部材３０も、ドラムコア２０と同じまたは異なる磁性材料で構成されるが、平板部材３０は、必ずしも磁性材料で構成する必要はない。 A drum-shaped drum core 20 with terminals 51 and 52, a flat plate member 30, and a wire 41 manufactured in this manner are prepared. The drum core 20 is made of a magnetic material, for example, a magnetic powder made of a magnetic material having a relatively high magnetic permeability, for example, Ni-Zn-based ferrite, Mn-Zn-based ferrite, or a metallic magnetic material. It is made by molding and sintering. Preferably, the flat plate member 30 is also made of the same or different magnetic material as the drum core 20, but the flat plate member 30 does not necessarily have to be made of a magnetic material.

端子５１は、たとえばリン青銅、タフピッチ鋼、純銅、真鍮、銀、金、あるいは金属系の合金でハンダ接合性があるものなどの金属端子で構成される。端子５１の厚みは、特に限定されないが、好ましくは５０〜３００μｍである。 The terminal 51 is composed of metal terminals such as phosphor bronze, tough pitch steel, pure copper, brass, silver, gold, or a metal alloy having solder bondability. The thickness of the terminal 51 is not particularly limited, but is preferably 50 to 300 μm.

ワイヤ４１としては、たとえば、銅（Ｃｕ）などの良導体からなる芯材を、イミド変成ポリウレタンなどからなる絶縁材で覆い、さらに最表面をポリエステルなどの薄い樹脂膜で覆ったものを用いることができる。準備された端子５１を設置したドラムコア２０およびワイヤ４１は、巻線機にセットされ、ワイヤ４１が、所定の順序でドラムコア２０の巻芯部２２に巻回される。ワイヤ４１の線径は、特に限定されないが、好ましくは１０〜３００μｍである。 As the wire 41, for example, a core material made of a good conductor such as copper (Cu) is covered with an insulating material made of imide-modified polyurethane or the like, and the outermost surface thereof is covered with a thin resin film such as polyester. .. The drum core 20 and the wire 41 on which the prepared terminals 51 are installed are set in the winding machine, and the wires 41 are wound around the winding core portion 22 of the drum core 20 in a predetermined order. The wire diameter of the wire 41 is not particularly limited, but is preferably 10 to 300 μm.

本実施形態では、巻回されたワイヤ４１のワイヤ端である引出部のリード端４１ａ，４１ｂは、それぞれ図３に示す一対の端子５１の継線面５１ｃ２に先端折曲片５１ｄがカシメられた後に接続される。 In the present embodiment, the lead ends 41a and 41b of the lead portion, which are the wire ends of the wound wire 41, have the tip bent pieces 51d crimped to the connecting surface 51c2 of the pair of terminals 51 shown in FIG. 3, respectively. Will be connected later.

巻芯部２２へのワイヤ４１の巻回作業の後に、平板部材３０を鍔部２４，２６の反実装側コア面２４ｂ，２６ｂに接合する。接合のための手段としては、特に限定されないが、たとえば接着による方法が例示される。 After winding the wire 41 around the winding core portion 22, the flat plate member 30 is joined to the anti-mounting side core surfaces 24b and 26b of the flange portions 24 and 26. The means for joining is not particularly limited, and examples thereof include a method by adhesion.

本実施形態のコイル装置１０では、図１Ｂに示すように、端子５１の実装面５１ｃ１と、ワイヤ４１のリード端４１ａ（４１ｂ）が接続されるワイヤ接続面である継線面５１ｃ２とが、主実装基部５１ｃの相互に反対側に位置する面に形成してある。そのため、継線面５１ｃ２と実装面５１ｃ１とが、突出板部５１ｂの基部５１ｃのほぼ厚みのみで近接し、ワイヤ４１のリード端４１ａ（４１ｂ）の接続部から外部回路基板（図示省略）へと至る端子５１の直流抵抗を極端に下げることが可能になる。そのため、コイル装置１０の全体としての直流抵抗も極端に小さくすることができる。 In the coil device 10 of the present embodiment, as shown in FIG. 1B, the mounting surface 51c1 of the terminal 51 and the connecting surface 51c2, which is the wire connecting surface to which the lead ends 41a (41b) of the wire 41 are connected, are the main components. It is formed on surfaces of the mounting base 51c located on opposite sides of each other. Therefore, the connecting wire surface 51c2 and the mounting surface 51c1 are close to each other only by the thickness of the base portion 51c of the protruding plate portion 51b, and from the connecting portion of the lead end 41a (41b) of the wire 41 to the external circuit board (not shown). It is possible to extremely reduce the DC resistance of the terminal 51 to reach. Therefore, the DC resistance of the coil device 10 as a whole can be made extremely small.

その結果、本実施形態のコイル装置１０は、電源用途にも好ましく用いることができる。また、本実施形態のコイル装置１０を信号系用途に用いる場合でも、挿入損失（ＩＲ／インサーションロス）の増大を抑制することが可能となり、たとえば１００ＭＨｚ以上の高周波の信号系用途にも好ましく用いることができる。 As a result, the coil device 10 of the present embodiment can be preferably used for power supply applications. Further, even when the coil device 10 of the present embodiment is used for a signal system application, it is possible to suppress an increase in insertion loss (IR / insertion loss), and it is preferably used for a high frequency signal system application of, for example, 100 MHz or more. be able to.

特に、本実施形態のコイル装置１０では、図１Ｂに示すように、鍔部２４，２６の下面である実装側コア面２４ａ，２６ａが、ワイヤ接続面５１ｃ２に対して、所定距離Ｚ１以上で離れているため、必然的に、鍔部２４，２６の下面は、実装面５１ｃ１に対して、所定の隙間で浮き上がった状態で、ドラムコア２０が端子５１で保持される。すなわち、ドラムコア２０は、実装面５１ｃ１から遠くなり、実装面５１ｃ１で接続される外部回路基板の熱変形などによる応力がドラムコア２０に直接に伝わり難くなり、実装後の強度が向上する。本実施形態のコイル装置１０は、１５０°Ｃ以上の高温でも使用可能であり、耐熱性にも優れている。 In particular, in the coil device 10 of the present embodiment, as shown in FIG. 1B, the mounting side core surfaces 24a and 26a, which are the lower surfaces of the flange portions 24 and 26, are separated from the wire connecting surface 51c2 by a predetermined distance Z1 or more. Therefore, inevitably, the drum core 20 is held by the terminal 51 in a state where the lower surfaces of the flange portions 24 and 26 are raised with respect to the mounting surface 51c1 with a predetermined gap. That is, the drum core 20 is far from the mounting surface 51c1, and stress due to thermal deformation of the external circuit board connected by the mounting surface 51c1 is less likely to be directly transmitted to the drum core 20, and the strength after mounting is improved. The coil device 10 of the present embodiment can be used even at a high temperature of 150 ° C. or higher, and has excellent heat resistance.

所定距離Ｚ１は、好ましくは、突出板部５１ｂを構成する板材の厚みの２倍以上、さらに好ましくは、２〜１０倍である。このように構成することで、鍔部２４，２６の下面である実装側コア面２４ａ，２６ａは、先端折曲部５１ｄ、または端子５１を構成する導電性端子板のいずれとも接触せずに所定の隙間空間を有する。したがって、図示しない外部回路基板の振動が直接に各鍔部２４，２６の実装側コア面２４ａ，２６ａに伝達し難くなると共に、外部回路基板の熱変形などによる応力が直接にドラムコア２０に伝達し難くなる。また、端子５１によるドラムコア２０の支持固定も安定化される。 The predetermined distance Z1 is preferably twice or more, more preferably 2 to 10 times, the thickness of the plate material constituting the protruding plate portion 51b. With this configuration, the mounting-side core surfaces 24a and 26a, which are the lower surfaces of the flange portions 24 and 26, are predetermined without contacting either the tip bent portion 51d or the conductive terminal plate constituting the terminal 51. Has a gap space of. Therefore, it becomes difficult to directly transmit the vibration of the external circuit board (not shown) to the mounting side core surfaces 24a and 26a of the flange portions 24 and 26, and the stress due to thermal deformation of the external circuit board is directly transmitted to the drum core 20. It becomes difficult. Further, the support and fixing of the drum core 20 by the terminal 51 is also stabilized.

また、本実施形態では、実装面５１ｃ１が、突出板部５１ｂの先端部にある主実装基部５１ｃにおいて、ワイヤ接続面５１ｃ２の反対側に位置する。そのため、ワイヤ接続面５１ｃ２と実装面５１ｃ１とは、主実装基部５１ｃのほぼ厚みのみで近接し、ワイヤ４１の引出部４１ａ，４１ｂの接続部から外部回路へと至る端子５１の直流抵抗を、さらに低下させることができる。 Further, in the present embodiment, the mounting surface 51c1 is located on the opposite side of the wire connecting surface 51c2 in the main mounting base 51c at the tip of the protruding plate portion 51b. Therefore, the wire connecting surface 51c2 and the mounting surface 51c1 are close to each other only by the thickness of the main mounting base 51c, and the DC resistance of the terminal 51 extending from the connecting portion of the lead portions 41a and 41b of the wire 41 to the external circuit is further increased. Can be lowered.

さらに、端子５１の突出板部５１ｂの先端部に位置する主実装基部５１ｃは、鍔部２４，２６の下方に位置する。また、同様に、副実装基部５１ｃαも、鍔部２４，２６の下方に位置する。主実装基部５１ｃと副実装基部５１ｃαとを、鍔部２４，２６の下方に位置させることで、巻芯部２２へのワイヤ４１の自動巻線作業が、さらに容易になる。ワイヤ４１の引出部４１ａ，４１ｂを主実装基部５１ｃのワイヤ接続面５１ｃ２に仮止めしやすくなり、ワイヤ４１に対する負荷が軽減され、ワイヤ４１にダメージを与えること無く巻線部２２に巻回しやすくなる。 Further, the main mounting base 51c located at the tip of the protruding plate 51b of the terminal 51 is located below the flanges 24 and 26. Similarly, the sub-mounting base portion 51cα is also located below the flange portions 24 and 26. By locating the main mounting base 51c and the sub-mounting base 51cα below the flanges 24 and 26, the automatic winding operation of the wire 41 around the winding core 22 becomes easier. The lead-out portions 41a and 41b of the wire 41 can be easily temporarily fixed to the wire connection surface 51c2 of the main mounting base 51c, the load on the wire 41 is reduced, and the wire 41 can be easily wound around the winding portion 22 without damaging the wire 41. ..

また、主実装基部５１ｃと副実装基部５１ｃαとは、端子本体５１ａと同一平面上に位置する突出板部５１ｂから鍔部２４，２６の下方に向けて折り曲げて成形してある。このように構成することで、主実装基部５１ｃと副実装基部５１ｃαとを、鍔部２４，２６の下方に位置させ易くなる。また、コイル装置１０の小型化にも寄与する。さらに、実装面積の縮小にも寄与する。 Further, the main mounting base 51c and the sub-mounting base 51cα are formed by bending downward from the protruding plate portion 51b located on the same plane as the terminal body 51a toward the lower side of the flange portions 24 and 26. With this configuration, the main mounting base 51c and the sub-mounting base 51cα can be easily positioned below the flanges 24 and 26. It also contributes to the miniaturization of the coil device 10. Furthermore, it also contributes to the reduction of the mounting area.

主実装基部５１ｃは、その先端側で折り返して曲げられる先端折曲部５１ｄをさらに有し、ワイヤ４１の引出部４１ａ，４１ｂは、先端折曲部５１ｄと主実装基部５１ｄとの間に挟まれる。ワイヤ４１の引出部４１ａ，４１ｂを先端折曲部５１ｄと主実装基部５１ｃとの間に挟み込むことで、引出部４１ａ，４１ｂの端子５１への仮止めおよび接続作業が容易になる。 The main mounting base 51c further has a tip bent portion 51d that is folded back and bent on the tip side thereof, and the drawer portions 41a and 41b of the wire 41 are sandwiched between the tip bent portion 51d and the main mounting base 51d. .. By sandwiching the lead-out portions 41a and 41b of the wire 41 between the tip bent portion 51d and the main mounting base portion 51c, the work of temporarily fixing and connecting the pull-out portions 41a and 41b to the terminal 51 becomes easy.

なお、本実施形態では、突出板部５１ｂは、主実装基部５１ｃ以外に、副実装基部５１ｃαを有しており、副実装基部５１ｃαには、ワイヤ４１の引出部４１ａ，４１ｂが接続されない。ただし、副実装基部５１ｃαにも、ワイヤ４１とは異なるワイヤのリード端が接続されるワイヤ接続面を実装面５１ｃα１と共に形成してもよい。副実装基部５１ｃαを設けることで、コイル装置１０の実装強度が向上すると共に、コイル装置１０を安定して回路基板などに実装することが容易になる。 In the present embodiment, the protruding plate portion 51b has a sub-mounting base portion 51cα in addition to the main mounting base portion 51c, and the drawer portions 41a and 41b of the wire 41 are not connected to the sub-mounting base portion 51cα. However, the sub-mounting base 51cα may also have a wire connection surface to which the lead end of the wire different from the wire 41 is connected together with the mounting surface 51cα1. By providing the sub-mounting base 51cα, the mounting strength of the coil device 10 is improved, and the coil device 10 can be stably mounted on a circuit board or the like.

また、本実施形態では、図２に示すように、鍔部２４，２６の外端面２４ｃ，２６ｃには、端子５１の端子本体５１ａが取り付けられる端子取付面５１ｃ１が段差状に凹んで形成してある。このように構成することで、端子５１を鍔部２４，２６の外端面２４ｃに位置決めして取り付けやすくなる。 Further, in the present embodiment, as shown in FIG. 2, the terminal mounting surfaces 51c1 to which the terminal body 51a of the terminal 51 is attached are formed to be recessed in a stepped shape on the outer end surfaces 24c and 26c of the flange portions 24 and 26. be. With this configuration, the terminal 51 can be easily attached by positioning it on the outer end surfaces 24c of the flange portions 24 and 26.

また、本実施形態では、図２に示すように、鍔部２４，２６の側面２４ｅ，２６ｅには、端子５１の嵌合片５１ｅが取り付けられる端子嵌合面２４ｅ１，２６ｅ１が段差状に凹んで形成してある。このように構成することで、さらに端子５１を鍔部２４，２６に位置決めして取り付けやすくなる。 Further, in the present embodiment, as shown in FIG. 2, the terminal fitting surfaces 24e1, 26e1 to which the fitting piece 51e of the terminal 51 is attached are recessed in a stepped shape on the side surfaces 24e and 26e of the flange portions 24 and 26. It is formed. With such a configuration, the terminal 51 can be further positioned and attached to the flange portions 24 and 26.

また本実施形態では、図３に示す端子本体５１ａには、好ましくは嵌合片５１ｅが形成される位置に対応して、あるいは、対応させること無く、切り欠き５１ａ１が形成してある。切り欠き５１ｅ１を形成することで、応力緩衝作用がさらに向上し、ドラムコア２０へ伝わる熱応力などの外力が、さらに低減される。 Further, in the present embodiment, the terminal body 51a shown in FIG. 3 is formed with a notch 51a1 that corresponds to or does not correspond to a position where the fitting piece 51e is preferably formed. By forming the notch 51e1, the stress buffering action is further improved, and the external force such as thermal stress transmitted to the drum core 20 is further reduced.

また本実施形態では、金属板からなる端子５１の端子本体５１ａの一部が、ドラムコア２０の鍔部２４（２６）の一部（実装側コア面２４ａ，２６ａ以外）で接着することで、外部回路基板からの振動や熱変形力などが直接にドラムコアに伝達し難くなる。その結果、コイル装置１０の外部回路基板への接続強度が向上する。さらに本実施形態では、嵌合片５１ｅによる鍔部２４，２６の端子嵌合面２４ｅ１，２６ｅ１への嵌合のみで、各端子５１を各鍔部２４，２６に取り付けてもよい。その場合においても、外部回路基板からの振動や熱変形力などが直接にドラムコアに伝達し難くなる。その結果、コイル装置１０の外部回路基板への接続強度が向上する。 Further, in the present embodiment, a part of the terminal body 51a of the terminal 51 made of a metal plate is adhered to a part of the flange portion 24 (26) of the drum core 20 (other than the mounting side core surfaces 24a and 26a) to form an external surface. It becomes difficult to directly transmit vibration and thermal deformation force from the circuit board to the drum core. As a result, the connection strength of the coil device 10 to the external circuit board is improved. Further, in the present embodiment, each terminal 51 may be attached to each of the collar portions 24, 26 only by fitting the flange portions 24, 26 to the terminal fitting surfaces 24e1, 26e1 by the fitting piece 51e. Even in that case, it becomes difficult to directly transmit the vibration and the thermal deformation force from the external circuit board to the drum core. As a result, the connection strength of the coil device 10 to the external circuit board is improved.

また本実施形態では、図１Ａに示すように、第１鍔部２４の反実装側コア面２４ｂと第２鍔部２６の反実装側コア面２６ｂとに掛け渡される平板部材３０をさらに有する。平板部材３０を磁性体で構成することにより、磁性体で構成されるドラムコア２０と組み合わされて閉磁路回路を構成することが可能になり、コイル装置２０の磁気特性が向上する。 Further, in the present embodiment, as shown in FIG. 1A, a flat plate member 30 is further provided which is hung on the anti-mounting side core surface 24b of the first flange portion 24 and the anti-mounting side core surface 26b of the second flange portion 26. By forming the flat plate member 30 with a magnetic material, it becomes possible to form a closed magnetic path circuit in combination with the drum core 20 made of the magnetic material, and the magnetic characteristics of the coil device 20 are improved.

なお、板状部材３０は、非磁性体部材でもよい。また、板状部材３０は、樹脂を塗布して形成してある部材でもよい。これらの板状部材３０は、平坦な上面を有することが好ましい。平坦な上面には、ピックアップ用吸着部材が着脱自在に吸着可能であり、ハンドリング性が向上する。 The plate-shaped member 30 may be a non-magnetic member. Further, the plate-shaped member 30 may be a member formed by applying a resin. These plate-shaped members 30 preferably have a flat upper surface. A suction member for pickup can be detachably attached to the flat upper surface to improve handleability.

第２実施形態
本発明の第２実施形態に係るコイル装置は、以下の点が相違するのみであり、その他の構成は、前述した第１実施形態と同様であり、同様な作用効果を奏し、重複する部分の説明は省略する。また、図面において、第１実施形態と共通する部材には、共通する符号を付してある。 Second Embodiment The coil device according to the second embodiment of the present invention differs only in the following points, and other configurations are the same as those of the first embodiment described above, and exhibit the same action and effect. The description of the overlapping part is omitted. Further, in the drawings, the members common to the first embodiment are designated by a common reference numeral.

図４Ａに示すように、この実施形態のコイル装置１０αは、図１Ａ〜図３に示す第１実施形態のコイル装置１０のドラムコア２０の形状が、図４Ａに示すドラムコア２０αのように変化したのみである。本実施形態のドラムコア２０αは、第１実施形態のドラムコア２０よりも、Ｚ軸方向の高さが小さくなっているのみであり、その他の構成は共通する。 As shown in FIG. 4A, in the coil device 10α of this embodiment, the shape of the drum core 20 of the coil device 10 of the first embodiment shown in FIGS. 1A to 3 is changed only like the drum core 20α shown in FIG. 4A. Is. The drum core 20α of the present embodiment has only a smaller height in the Z-axis direction than the drum core 20 of the first embodiment, and has the same other configurations.

第３実施形態
本発明の第３実施形態に係るコイル装置は、以下の点が相違するのみであり、その他の構成は、前述した第１実施形態または第２実施形態と同様であり、同様な作用効果を奏し、重複する部分の説明は省略する。また、図面において、第１実施形態および第２実施形態と共通する部材には、共通する符号を付してある。 Third Embodiment The coil device according to the third embodiment of the present invention differs only in the following points, and other configurations are the same as those of the first embodiment or the second embodiment described above, and are the same. The description of the overlapping parts will be omitted. Further, in the drawings, the members common to the first embodiment and the second embodiment are designated by a common reference numeral.

図４Ｂに示すように、この実施形態のコイル装置１１０では、図４Ａに示す端子５１が、二つに分割され、端子５２と端子５３とで構成される。 As shown in FIG. 4B, in the coil device 110 of this embodiment, the terminal 51 shown in FIG. 4A is divided into two, and is composed of the terminal 52 and the terminal 53.

図４Ｂに示す端子５２および５３は、それぞれ導電性端子板などで構成され、たとえば金属板などの一枚の導電性板材からそれぞれ折曲成形してある端子本体５２ａ（５３ａ）と突出板部５２ｂ（５３ｂ）とを有する。端子本体５２ａ（５３ａ）は、鍔部２４（２６）の外端面２４ｃ（２６ｃ）に形成してある端子取付面２４ｃ１（２６ｃ１）に接着剤などで取り付けられる平板形状を有する。 The terminals 52 and 53 shown in FIG. 4B are each composed of a conductive terminal plate or the like, and the terminal main body 52a (53a) and the protruding plate portion 52b are respectively bent and molded from one conductive plate material such as a metal plate. (53b) and. The terminal body 52a (53a) has a flat plate shape that is attached to the terminal mounting surface 24c1 (26c1) formed on the outer end surface 24c (26c) of the collar portion 24 (26) with an adhesive or the like.

端子本体５２ａ（５３ａ）は、鍔部２４（２６）の端子取付面２４ｃ１（２６ｃ１）に接着剤などで固定され、端子取付面２４ｃ１（２６ｃ１）に所定の隙間（隙間０でもよい）で密着する。本実施形態では、端子本体５２ａ（５３ａ）には、第１実施形態の端子５１の端子係合片５１ｅが形成されていないと共に、切り欠き５１ａ１も形成されていない。 The terminal main body 52a (53a) is fixed to the terminal mounting surface 24c1 (26c1) of the flange portion 24 (26) with an adhesive or the like, and adheres to the terminal mounting surface 24c1 (26c1) with a predetermined gap (the gap may be 0). .. In the present embodiment, the terminal main body 52a (53a) is not formed with the terminal engaging piece 51e of the terminal 51 of the first embodiment, and is not formed with the notch 51a1.

端子本体５２ａ（５３ａ）には、鍔部２４（２６）の下端で、鍔部２４（２６）の実装側コア面２４ａ（２６ａ）からＺ軸方向の下側に突出する突出板部５２ｂ（５３ｂ）が一体に成形してある。突出板部５２ｂ（５３ｂ）は、端子本体５２ａ（５３ａ）と面一にＺ軸方向の下方向に伸びる。突出板部５２ｂ（５３ｂ）は、そのＺ軸方向の下端から内側に一体的に折り曲げてある主実装基部５２ｃ（または副実装基部５３ｃ）を有する。 The terminal body 52a (53a) has a protruding plate portion 52b (53b) protruding downward in the Z-axis direction from the mounting side core surface 24a (26a) of the flange portion 24 (26) at the lower end of the flange portion 24 (26). ) Is integrally molded. The projecting plate portion 52b (53b) extends in the downward direction in the Z-axis direction so as to be flush with the terminal body 52a (53a). The projecting plate portion 52b (53b) has a main mounting base portion 52c (or a sub-mounting base portion 53c) that is integrally bent inward from the lower end in the Z-axis direction.

主実装基部５２ｃと副実装基部５３ｃとは、鍔部２４，２６の下方で、それぞれＹ軸方向の両側で所定距離で離れて位置してある。本実施形態では、主実装基部５２ｃと副実装基部５３ｃとは、それぞれの突出板部５２ｂ，５３ｂから、それぞれ同じ方向に折り曲げられ、それぞれ、図２に示す鍔部２４または鍔部２６の実装側コア面２４ａまたは２６ａの下方に位置する。 The main mounting base 52c and the sub-mounting base 53c are located below the flanges 24 and 26, respectively, at a predetermined distance on both sides in the Y-axis direction. In the present embodiment, the main mounting base 52c and the sub-mounting base 53c are bent in the same direction from the protruding plate portions 52b and 53b, respectively, and the flange portion 24 or the flange portion 26 shown in FIG. 2 is mounted on the mounting side, respectively. It is located below the core surface 24a or 26a.

主実装基部５２ｃは、その先端から折り返して曲げられている先端折曲部５２ｄとを有する。本実施形態では、基部５２ｃの先端部で、先端折曲片５２ｄがＺ軸方向の上側に折り返すように曲げてあり、先端折曲部５２ｄの反対側に位置する主実装基部５２ｃの外面が、実装面５２ｃ１となり、先端折曲片５２ｄが位置する主実装基部５２ｃの内面が継線面（ワイヤ接続面）５２ｃ２となる。 The main mounting base 52c has a tip bent portion 52d that is bent back from the tip thereof. In the present embodiment, at the tip of the base 52c, the tip bent piece 52d is bent so as to be folded upward in the Z-axis direction, and the outer surface of the main mounting base 52c located on the opposite side of the tip bent 52d is formed. It becomes the mounting surface 52c1, and the inner surface of the main mounting base 52c where the tip bent piece 52d is located becomes the connecting wire surface (wire connecting surface) 52c2.

また、副実装基部５３ｃは、その先端から折り返して曲げられている先端折曲部５２ｄを有さないが、副実装基部５３ｃの外面（下面）が、実装面５３ｃとなり、その反対面である副実装基部５３ｃの内面には、継線面（ワイヤ接続面）が形成されないが、形成されてもよい。本実施形態では、各鍔部２４，２６に取り付けられる端子が、二つの端子５２，５３で構成してある。 Further, the sub-mounting base 53c does not have a tip bent portion 52d that is bent back from the tip thereof, but the outer surface (lower surface) of the sub-mounting base 53c becomes the mounting surface 53c, which is the opposite surface. A joint wire surface (wire connection surface) is not formed on the inner surface of the mounting base 53c, but it may be formed. In the present embodiment, the terminals attached to the flange portions 24 and 26 are composed of two terminals 52 and 53.

第４実施形態
本発明の第４実施形態に係るコイル装置は、以下の点が相違するのみであり、その他の構成は、前述した第３実施形態と同様であり、同様な作用効果を奏し、重複する部分の説明は省略する。また、図面において、第１実施形態〜第３実施形態と共通する部材には、共通する符号を付してある。 Fourth Embodiment The coil device according to the fourth embodiment of the present invention differs only in the following points, and other configurations are the same as those of the above-described third embodiment, and exhibit the same action and effect. The description of the overlapping part is omitted. Further, in the drawings, members common to the first to third embodiments are designated by a common reference numeral.

図４Ｃに示すように、この実施形態のコイル装置１１０αでは、ドラムコア２０αにおける鍔部２４（２６も同様であり、その説明は省略する）の外端面２４ｃの下部に形成してある端子取付面２４ｃ１のＹ軸方向の中央部に、Ｘ軸方向の凹む嵌合凹部２４ｃ２をＺ軸に沿って形成してあり、その嵌合凹部２４ｃ２のＹ軸方向の両側に端子嵌合面２４ｃ３を形成してある。 As shown in FIG. 4C, in the coil device 110α of this embodiment, the terminal mounting surface 24c1 formed on the lower portion of the outer end surface 24c of the collar portion 24 (26 is also the same and the description thereof is omitted) in the drum core 20α. A fitting recess 24c2 recessed in the X-axis direction is formed along the Z-axis in the central portion of the fitting recess 24c2 in the Y-axis direction, and terminal fitting surfaces 24c3 are formed on both sides of the fitting recess 24c2 in the Y-axis direction. be.

また、端子５２，５３のＺ軸方向の上部には、そのＹ軸方向の両側から内側に折り曲げて、それぞれ一対の嵌合片５２ｅ，５３ｅが形成してある。各嵌合片５２ｅ，５３ｅは、鍔部２４に形成してある端子嵌合面２４ｅ１，２４ｃ３に嵌合するようになっている。 Further, a pair of fitting pieces 52e and 53e are formed on the upper portions of the terminals 52 and 53 in the Z-axis direction by bending inward from both sides in the Y-axis direction. The fitting pieces 52e and 53e are fitted to the terminal fitting surfaces 24e1, 24c3 formed on the flange portion 24.

なお、本発明は、上述した実施形態に限定されるものではなく、本発明の範囲内で種々に改変することができる。 The present invention is not limited to the above-described embodiment, and can be variously modified within the scope of the present invention.

たとえば、上述した実施形態では、第１鍔部２４と第２鍔部２６とを同じ構成にしたが、これらを異なる構成にしてもよい。 For example, in the above-described embodiment, the first flange portion 24 and the second flange portion 26 have the same configuration, but they may have different configurations.

また、上述した実施形態では、コイル部４０を一本のワイヤ４１で構成したが、二本以上のワイヤで構成してもよい。その場合には、副実装基部５１ｃα（または５３ｃ）にも、主実装基部５１ｃ（または５２ｃ）と同様な継線部５１ｃ２を形成することが好ましい。また、副実装基部５１ｃα（または５３ｃ）にも、主実装基部５１ｃ（または５２ｃ）と同様な先端折曲部５１ｄ（または５２ｄ）を具備させてもよい。 Further, in the above-described embodiment, the coil portion 40 is composed of one wire 41, but it may be composed of two or more wires. In that case, it is preferable to form the joint wire portion 51c2 similar to the main mounting base portion 51c (or 52c) on the sub-mounting base portion 51cα (or 53c). Further, the sub-mounting base 51cα (or 53c) may also be provided with the same tip bent portion 51d (or 52d) as the main mounting base 51c (or 52c).

また、上述した各実施形態では、ワイヤ４１の引出部４１ａ，４１ｂが、鍔部２４，２６の対角となる位置に引き出されて、その対角となる位置に配置してある端子５１（または５２）の主実装基部５１ｃ（または５２ｃ）の継線面５１ｃ２（または５２ｃ２）に接続してある。しかしながら、対角となる以外の位置で、ワイヤ４１の引出部４１ａ，４１ｂを引き出して、各端子５１（または端子５２または５３）に接続してもよい。 Further, in each of the above-described embodiments, the lead-out portions 41a and 41b of the wire 41 are pulled out at diagonal positions of the flange portions 24 and 26, and the terminals 51 (or terminals 51) are arranged at the diagonal positions. It is connected to the connecting surface 51c2 (or 52c2) of the main mounting base 51c (or 52c) of 52). However, the drawer portions 41a and 41b of the wire 41 may be pulled out at positions other than diagonal positions and connected to the respective terminals 51 (or terminals 52 or 53).

なお、上述した実施形態において、先端折曲部５１ｄ，５２ｄに対応する基部５１ｃ，５２ｃの表面と裏面に、ワイヤ接続面および前記実装面がそれぞれ形成してあるが、それに限定されない。たとえば先端折曲部５１ｄ，５２ｄを実装面側に折返し、その表面と裏面に、それぞれワイヤ接続面および前記実装面をそれぞれ形成しても良い。あるいは、実装側基部５１ｃ，５２ｃには、先端折曲部５１ｄ，５２ｄが無くても良い。 In the above-described embodiment, the wire connecting surface and the mounting surface are formed on the front surface and the back surface of the base portions 51c and 52c corresponding to the tip bent portions 51d and 52d, respectively, but the present invention is not limited thereto. For example, the tip bent portions 51d and 52d may be folded back toward the mounting surface, and a wire connecting surface and the mounting surface may be formed on the front surface and the back surface, respectively. Alternatively, the mounting side bases 51c and 52c may not have the tip bent portions 51d and 52d.

１０，１０α，１１０，１１０α… コイル装置
２０，２０α… ドラムコア
２２… 巻芯部
２４… 第１鍔部
２４ａ… 実装側コア面
２４ｂ… 反実装側コア面
２４ｃ… 外端面
２４ｃ１… 端子取付面
２４ｃ２… 嵌合凹部
２４ｃ３… 端子嵌合面
２４ｄ… 内面
２４ｅ… 側面
２４ｅ１… 端子嵌合面
２６… 第２鍔部
２６ａ… 実装側コア面（下面）
２６ｂ… 反実装側コア面
２６ｃ… 外端面
２６ｃ１… 端子取付面
２６ｄ… 内面
２６ｅ… 側面
２６ｅ１… 端子嵌合面
３０… 平板部材
４０… コイル部
４１… ワイヤ
４１ａ… 一方の引出部（リード端）
４１ｂ… 他方の引出部（リード端）
５１，５２，５３，５２α，５３α… 端子（端子具）
５１ａ，５２ａ，５３ａ，… 端子本体
５１ａ１… 切り欠き
５１ｂ，５２ｂ，５３ｂ… 突出板部
５１ｃ，５２ｃ，… 主実装基部
５１ｃα，５３ｃ… 副実装基部
５１ｃ１，５２ｃ１，５３ｃ１，５１ｃα１… 実装面
５１ｃ２，５２ｃ２… 継線面(ワイヤ接続面)
５１ｄ，５２ｄ… 先端折曲部
５１ｅ，５２ｅ，５３ｅ… 嵌合片 10, 10α, 110, 110α ... Coil device 20, 20α ... Drum core 22 ... Winding core part 24 ... First flange part 24a ... Mounting side core surface 24b ... Anti-mounting side core surface 24c ... Outer end surface 24c1 ... Terminal mounting surface 24c2 ... Fitting recess 24c3 ... Terminal fitting surface 24d ... Inner surface 24e ... Side surface 24e1 ... Terminal fitting surface 26 ... Second flange 26a ... Mounting side core surface (lower surface)
26b ... Non-mounting side core surface 26c ... Outer end surface 26c1 ... Terminal mounting surface 26d ... Inner surface 26e ... Side surface 26e1 ... Terminal fitting surface 30 ... Flat plate member 40 ... Coil part 41 ... Wire 41a ... One drawer part (lead end)
41b ... The other drawer (lead end)
51, 52, 53, 52α, 53α ... Terminal (terminal tool)
51a, 52a, 53a, ... Terminal body 51a1 ... Notch 51b, 52b, 53b ... Protruding plate portions 51c, 52c, ... Main mounting base 51cα, 53c ... Sub-mounting base 51c1, 52c1, 53c1, 51cα1 ... Mounting surface 51c2, 52c2 … Joint wire surface (wire connection surface)
51d, 52d ... Tip bent portion 51e, 52e, 53e ... Fitting piece

Claims

A core part that is made of magnetic material and has a collar part,
The wire wound around the core and
A coil device having a terminal tool attached to a part of the outer surface of the collar portion.
The terminal tool
The terminal body that is in contact with the outer surface of the collar
It has a protruding plate portion that is integrally molded with the terminal body and protrudes away from the collar portion.
The protruding plate portion has a wire connecting surface to which the lead end of the wire is connected and a mounting surface located in the vicinity of the wire connecting surface and connected to an external circuit.
A coil device in which the lower surface of the flange portion is separated from the wire connecting surface by a predetermined distance.

The coil device according to claim 1, wherein the mounting surface is the tip end portion of the protruding plate portion and is located on the opposite side of the wire connecting surface.

The protruding plate portion
It has at least one main mounting base located below the collar.
The coil device according to claim 1 or 2, wherein the mounting surface and the wire connecting surface are formed on the main mounting base.

The coil device according to claim 3, wherein the main mounting base is formed by bending from the protruding plate portion located on the same plane as the terminal body toward the lower side of the collar portion.

The protruding plate portion further has a tip bent portion that is folded back and bent on the tip end side of the main mounting base portion.
The coil device according to claim 3 or 4, wherein the lead end of the wire is sandwiched between the tip bent portion and the main mounting base portion.

The coil device according to any one of claims 3 to 5, wherein the protruding plate portion has a sub-mounting base portion in addition to the main mounting base portion, and the lead end of the wire is not connected to the sub-mounting base portion.

The coil device according to any one of claims 1 to 6, wherein the lower surface of the flange portion is separated from the wire connecting surface by the predetermined distance of twice or more the thickness of the protruding plate portion.

The coil device according to any one of claims 1 to 7, wherein the terminal mounting surface on which the terminal body of the terminal tool is mounted is recessed in a stepped shape on the outer end surface of the collar portion.

The coil device according to any one of claims 1 to 8, wherein the terminal fitting surface to which the fitting piece of the terminal tool is attached is formed by being recessed in a stepped shape on the side surface of the collar portion.

The coil device according to claim 9, wherein a notch is formed in the terminal body corresponding to a position where the fitting piece is formed.