JP3996145B2

JP3996145B2 - Coil parts

Info

Publication number: JP3996145B2
Application number: JP2004159386A
Authority: JP
Inventors: 克美斎藤; 昴三梶原
Original assignee: TDK Corp
Current assignee: TDK Corp
Priority date: 2004-05-28
Filing date: 2004-05-28
Publication date: 2007-10-24
Anticipated expiration: 2024-05-28
Also published as: JP2005340621A

Description

本発明はコイル部品に関する。 The present invention relates to a coil component.

従来、例えばコモンモードフィルタ等に使用されるコイル部品は、巻芯部とその両端に設けられた鍔部とから構成されたコアと、コアのそれぞれの鍔部に設けられた電極と、巻芯部に巻回されて両端部がそれぞれ電極に継線された導線とを備えて構成されている。 Conventionally, for example, a coil component used for a common mode filter or the like includes a core composed of a core part and flanges provided at both ends thereof, an electrode provided on each of the core parts, and a core. And a conductive wire wound around the portion and connected at both ends to the electrodes.

この電極を構成する一例として特許文献１に示すように、鍔部の巻芯部と連接される面の反対面と反対面に繋がる一対の側面とに跨り、鍔部の巻芯部と連接される面の反対面に対峙する連結部と反対面に繋がる一対の側面を狭持する第一狭持部及び第二狭持部とを備えて略コの字形状を成している板状の金属端子がある。
特開２００３−２２９１６号公報 As an example of constituting this electrode, as shown in Patent Document 1, it straddles a pair of side surfaces connected to the opposite surface and the opposite surface of the surface connected to the core portion of the collar portion, and is connected to the core portion of the collar portion. A plate-shaped plate having a substantially U-shape with a first holding portion and a second holding portion that hold a pair of side surfaces that are connected to the opposite surface of the connecting surface and the opposite surface. There are metal terminals.
JP 2003-22916 A

また、近年の電子機器の極小化に伴い、これら電子機器に使用されるコモンモードフィルタ等も極小化が進み、現在では数ｍｍ程度のコイル部品が用いられてコモンモードフィルタ等が構成されている。 In addition, with the recent miniaturization of electronic devices, common mode filters and the like used in these electronic devices have also been miniaturized, and currently common mode filters and the like are configured using coil parts of about several millimeters. .

近年の極小化されたコイル部品では、上述の金属端子も極小化され、これを人の手でコアに装着することは容易ではなく、また大量生産の必要性からも金属端子をコアに装着する工程は機械化されて実施されている。この場合に金属端子は、コアの鍔部に外挿されて固定されている。 In recent miniaturized coil parts, the above-mentioned metal terminal is also miniaturized, and it is not easy to attach it to the core by human hands, and also attach the metal terminal to the core from the necessity of mass production. The process is carried out mechanized. In this case, the metal terminal is fixed by being extrapolated to the flange portion of the core.

これら従来のコイル部品では、金属端子を装着する際に、金属端子の第一狭持部及び第二狭持部の先端が、鍔部の一対の側面に沿って移動し外挿されるが、鍔部の側面に沿う時にその先端部分が鍔部に強接触し、コア欠けが発生する場合があった。また、同じく金属端子の第一狭持部及び第二狭持部の先端が鍔部に強接触することにより、これら第一狭持部及び第二狭持部が変形する場合があった。金属端子の第一狭持部及び第二狭持部は、いずれか一方が基板状の実装面と接して半田付等により融着される個所であるため、この融着個所が変形することにより、コイル部品と基板とのコプラナリティが低下する場合があった。 In these conventional coil components, when the metal terminal is mounted, the tips of the first holding part and the second holding part of the metal terminal move along the pair of side surfaces of the collar part and are extrapolated. In some cases, the tip portion of the portion is in strong contact with the collar portion along the side surface of the portion, resulting in core chipping. Similarly, when the tips of the first holding part and the second holding part of the metal terminal are in strong contact with the collar part, the first holding part and the second holding part may be deformed. Since either one of the first clamping part and the second clamping part of the metal terminal is in contact with the board-shaped mounting surface and is fused by soldering or the like, the fusion part is deformed. In some cases, the coplanarity between the coil component and the substrate is lowered.

また、コイル部品において、金属端子とコアとの間には接着剤が介在しており、金属端子とコアとの密着性を向上させている。コイル部品は上述のように極小であるため、比較的粘性の少ない高流動性の接着剤が使用されている。接着剤は金属端子の連結部の略コの字形状内面に塗布された後、金属端子がコアに装着されて金属端子の連結部の内面と、コアの鍔部の巻芯部と連接される面の反対面と、の間に介在することになる。この場合に金属端子の略コの字形状内面は、鍔部の面と当接しているため、毛細管現象によりその当接部分の隙間を伝わって、接着剤は金属端子の略コの字形状内面と鍔部の面とが当接している部分の全部にまで拡がる場合があった。 In the coil component, an adhesive is interposed between the metal terminal and the core to improve the adhesion between the metal terminal and the core. Since the coil component is extremely small as described above, a highly fluid adhesive having a relatively low viscosity is used. After the adhesive is applied to the substantially U-shaped inner surface of the connecting portion of the metal terminal, the metal terminal is attached to the core and connected to the inner surface of the connecting portion of the metal terminal and the core portion of the core flange. It will be interposed between the opposite surface of the surface. In this case, since the substantially U-shaped inner surface of the metal terminal is in contact with the surface of the collar portion, the adhesive is transmitted through the gap between the contact portions by capillary action, and the adhesive is approximately the inner surface of the metal terminal. In some cases, it spreads to the entire portion where the surface of the buttocks abuts.

上述のように金属端子の第一狭持部及び第二狭持部の何れか一方は、基板の実装面に熱融着される部分である。また、金属端子の第一狭持部及び第二狭持部の何れか他方は、導線の継線時にアーク溶接等により導線が熱融着される部分であり、強熱される部分である。これら第一狭持部及び第二狭持部と鍔部との間に接着剤が拡がると、接着剤が強熱されて炭化物が生成され飛散し、この飛散した炭化物が回路上に付着して短絡し、悪影響を与えるおそれがあった。 As described above, one of the first holding portion and the second holding portion of the metal terminal is a portion that is thermally fused to the mounting surface of the substrate. In addition, either one of the first sandwiching portion and the second sandwiching portion of the metal terminal is a portion where the conducting wire is heat-sealed by arc welding or the like when the conducting wire is connected, and is a portion that is strongly heated. When the adhesive spreads between the first sandwiching part and the second sandwiching part and the collar part, the adhesive is ignited and carbide is generated and scattered, and the scattered carbide adheres to the circuit. There was a risk of short circuiting and adverse effects.

また、接着個所が金属端子の略コの字形状内面全体と、コアの鍔部の３面とに渡って形成されることにより、コアと金属端子は剛接合されることになる。コア両端の金属端子は、それぞれ基板に融着されるため、基板の撓みに追従して金属端子も変形するが、コアと金属端子とが剛接合されていると、金属端子と一緒にコアも変形する。コアは、一般に磁性粉体を焼結等して形成しているため、樹脂等により構成されている基板に対して撓み難く、基板が撓んだ際にコアがその撓みに追従できずに破損する場合があった。 Further, the bonding portion is formed over the entire substantially U-shaped inner surface of the metal terminal and the three surfaces of the flange portion of the core, whereby the core and the metal terminal are rigidly joined. Since the metal terminals at both ends of the core are fused to the substrate, the metal terminal also deforms following the bending of the substrate. However, if the core and the metal terminal are rigidly joined, the core also Deform. Since the core is generally formed by sintering magnetic powder etc., it is difficult to bend with respect to the substrate made of resin, etc., and when the substrate is bent, the core can not follow the bending and breaks There was a case.

そこで、本発明は、コアに端子金具を外挿し易くし、かつ接着剤がコアの基板実装側等に回り込まないコイル部品を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to provide a coil component that makes it easy to extrapolate a terminal fitting to a core and prevents an adhesive from going around to the substrate mounting side of the core.

上記目的を達成するために、巻芯部と、巻芯部の両端にそれぞれ設けられた、一面と一面に対向する他面とを有する鍔部と、を備えたコアと、一面に平行に延びる第一挟持部と他面に平行に延びる第二挟持部と第一挟持部と第二挟持部とを繋げる連結部とを有し、鍔部に装着されて一面と他面とを狭持する金属端子と、巻芯部に巻回されると共に金属端子に両端部が継線される導線と、を備えたコイル部品を提供する。このコイル部品において、一面及び他面の金属金具が装着される装着方向上流側の端縁部には、装着方向の反対方向に向かって一面と他面との距離が徐々に減少する第一傾斜面及び第二傾斜面がそれぞれ設けられ、一面と他面とは互いに平行に延び、第一傾斜面と第二傾斜面の装着方向最上流縁間には、一面と他面とに略直交し連結部と対峙する対峙面が備えられている。また金属端子は、第一挟持部と第二挟持部と連結部とにより略コの字状を成し、金属端子と鍔部との間には、少なくとも第一傾斜面と第一狭持部と連結部とで囲まれる空間と、少なくとも第二傾斜面と第二狭持部と連結部とで囲まれる空間とが形成されている。 In order to achieve the above object , a core including a core part and a collar part provided on each end of the core part and having one surface and another surface opposite to the one surface, and extends parallel to the one surface. The first clamping part and the second clamping part extending in parallel with the other surface, and the connecting part that connects the first clamping part and the second clamping part, are attached to the collar and sandwich the one surface and the other surface. Provided is a coil component including a metal terminal and a conductive wire wound around a winding core and having both ends connected to the metal terminal. In this coil component, a first slope in which the distance between one surface and the other surface gradually decreases toward the opposite direction of the mounting direction at the end edge on the upstream side in the mounting direction where the metal fittings on one surface and the other surface are mounted. A first surface and a second inclined surface, the one surface and the other surface extend parallel to each other, and the first and second inclined surfaces are substantially orthogonal to the first surface and the other surface between the most upstream edges in the mounting direction. A confronting surface that confronts the connecting portion is provided. The metal terminal has a substantially U-shape formed by the first sandwiching portion, the second sandwiching portion, and the connecting portion, and at least the first inclined surface and the first sandwiching portion are provided between the metal terminal and the flange portion. And a space surrounded by at least the second inclined surface, the second sandwiching portion, and the connection portion are formed.

このような構成によると、金属端子の装着方向先端部分がコアの鍔部に設けられた第一傾斜面及び第二傾斜面に当接し、その後に金属端子がコアに装着される。 According to such a structure, the front-end | tip part of the mounting direction of a metal terminal contact | abuts to the 1st inclined surface and 2nd inclined surface which were provided in the collar part of the core, and a metal terminal is mounted | worn to a core after that.

また連結部と対峙面との間には接着剤が介在していることが好ましい。 Moreover, it is preferable that an adhesive is interposed between the connecting portion and the facing surface.

このような構成によると接着剤によりコアと金属端子とが接合される。According to such a configuration, the core and the metal terminal are joined by the adhesive.

また、該第一傾斜面と該第一面とがなす角度、及び該第二傾斜面と該他面とがなす角度はそれぞれ、１０°以上かつ４５°以下であってもよい。更に該第一傾斜面と該第一面とがなす角度、及び該第二傾斜面と該他面とがなす角度はそれぞれ、２０°以上かつ３５°以下であってもよい。 Further, the angle formed by the first inclined surface and the first surface and the angle formed by the second inclined surface and the other surface may be 10 ° or more and 45 ° or less, respectively. Furthermore, the angle formed by the first inclined surface and the first surface and the angle formed by the second inclined surface and the other surface may be 20 ° or more and 35 ° or less, respectively.

また、該第一傾斜面の該装着方向最上流端部には該第一傾斜面に連接される第一傾斜導入面が設けられ、該第二傾斜面の該装着方向最上流端部には該第二傾斜面に連接される第二傾斜導入面が設けられ、該第一傾斜導入面と該第二傾斜導入面とは、該対峙面と略直交に交差してもよい。 In addition, a first inclined introduction surface connected to the first inclined surface is provided at the most upstream end portion in the mounting direction of the first inclined surface, and an upstreammost end portion in the mounting direction of the second inclined surface is provided. A second inclined introduction surface connected to the second inclined surface may be provided, and the first inclined introduction surface and the second inclined introduction surface may intersect the opposing surface substantially orthogonally.

本発明の請求項１記載のコイル部品によれば、金属端子が、第一狭持部及び第二狭持部の装着方向先端が第一傾斜面及び第二傾斜面に当接し、傾斜面に沿って円滑に移動して一面上及び他面上に配置されて装着されるため鍔部のコア欠けが発生し難く、金属端子の変形を抑制することが可能となる。金属端子の変形が抑制されているため、コイル部品を基板上に実装する際の基板に対するコイル部品のコプラナリティが向上し、コイル部品の取付精度が向上する。 According to the coil component of the first aspect of the present invention, the metal terminal has the first holding portion and the second holding portion in the mounting direction front end abutting the first inclined surface and the second inclined surface, and the inclined surface Since it moves smoothly along and is disposed and mounted on one surface and the other surface, it is difficult for the core portion of the collar portion to occur, and deformation of the metal terminal can be suppressed. Since deformation of the metal terminal is suppressed, the coplanarity of the coil component with respect to the substrate when the coil component is mounted on the substrate is improved, and the mounting accuracy of the coil component is improved.

請求項２記載のコイル部品によれば、鍔部と金属端子との間に、第一傾斜面、第一挟持部及び連結部により囲まれる隙間と、第二傾斜面、第二挟持部及び連結部により囲まれる隙間とが形成される。金属端子の連結部と鍔部の対峙面との間に接着剤を充填し、金属端子と鍔部とを接着した場合に毛細管現象により対峙面と連結部との隙間には接着剤が拡がるが、傾斜面、第一挟持部及び連結部により囲まれる隙間と、第二傾斜面、第二挟持部及び連結部により囲まれる隙間とにより毛細管現象は遮られ、接着剤が一面と第一狭持部との間、及び他面と第二狭持部との間に拡がることは抑制される。 According to the coil component according to claim 2, the gap surrounded by the first inclined surface, the first sandwiching portion, and the connecting portion, the second inclined surface, the second sandwiching portion, and the connection between the flange portion and the metal terminal. A gap surrounded by the portion is formed. When an adhesive is filled between the connecting portion of the metal terminal and the facing surface of the flange portion, and the metal terminal and the flange portion are bonded, the adhesive spreads in the gap between the facing surface and the connecting portion due to capillary action. The capillarity is blocked by the gap surrounded by the inclined surface, the first sandwiching portion, and the connecting portion, and the gap surrounded by the second inclined surface, the second sandwiching portion, and the connecting portion, and the adhesive is sandwiched between the first surface and the first sandwiching portion. Spreading between the two parts and between the other surface and the second holding part is suppressed.

請求項３記載のコイル部品によれば、該第一傾斜面と該第一面とがなす角度、及び該第二傾斜面と該他面とがなす角度を４５°以下とすることにより、金属端子の第一狭持部及び第二狭持部の装着方向先端が第一傾斜面及び第二傾斜面に強接触した際にも、第一狭持部及び第二狭持部が、傾斜面に沿って円滑に移動することが可能となり、鍔部のコア欠けが発生し難く、金属端子の変形を抑制することが可能となる。また、該第一傾斜面と該第一面とがなす角度、及び該第二傾斜面と該他面とがなす角度を１０°以上とすることにより、金属端子の第一狭持部及び第二狭持部と、一面及び他面とが確実に接する面を確保することが可能となり、金属端子に対する鍔部の位置を確定することが可能となる。また請求項４によれば、上述の請求項３にかかる効果をより高めることが可能となる。 According to the coil component of claim 3, the angle formed between the first inclined surface and the first surface and the angle formed between the second inclined surface and the other surface are 45 ° or less, Even when the mounting direction tips of the first holding portion and the second holding portion of the terminal are in strong contact with the first inclined surface and the second inclined surface, the first holding portion and the second holding portion are inclined surfaces. It is possible to smoothly move along the core, and it is difficult for the core portion of the collar portion to be broken, and the deformation of the metal terminal can be suppressed. Further, by setting the angle formed by the first inclined surface and the first surface and the angle formed by the second inclined surface and the other surface to be 10 ° or more, the first holding portion of the metal terminal and the first It is possible to ensure a surface where the two sandwiching portions and the one surface and the other surface are in contact with each other, and the position of the collar portion with respect to the metal terminal can be determined. According to claim 4, the effect according to claim 3 described above can be further enhanced.

請求項５記載のコイル部品によれば、第一傾斜面及び第二傾斜面の装着方向最上流端部に第一傾斜導入面及び第二傾斜導入面が鍔部の対峙面と略直交に交差するように形成される。コアは磁性体等の粉体が金型等の型枠に入れられて、型枠内で圧縮された後に該型枠を取り外して生産される。型枠は、対峙面等を形成する略平面の底部に、側面及び傾斜面等を形成する側面部を組み合わせて使用されるが、第一傾斜導入面及び第二傾斜導入面を鍔部の対峙面と略直交に交差するように形成することにより、型枠の側面部に鋭角部分が形成されず、型枠の耐久性が増すと共に、成型品からの型枠の分離が容易となる。 According to the coil component of the fifth aspect, the first inclined introduction surface and the second inclined introduction surface intersect the orthogonal face of the flange portion at the most upstream end in the mounting direction of the first inclined surface and the second inclined surface. To be formed. The core is produced by putting powder such as a magnetic material in a mold such as a mold and compressing the powder in the mold and then removing the mold. The formwork is used by combining a bottom surface of a substantially flat surface that forms a facing surface and the like with a side surface portion that forms a side surface and an inclined surface, etc., but the first inclined introduction surface and the second inclined introduction surface are opposed to the flange portion. By forming so as to intersect the surface substantially orthogonally, an acute angle portion is not formed on the side surface portion of the mold, so that the durability of the mold is increased and the mold is easily separated from the molded product.

本発明実施の形態によるコイル部品について図１乃至図５を参照しながら説明する。コイル部品１は、高速作動信号インターフェースに用いられるコモンモードフィルタであり、その寸法は、長手方向で４ｍｍ程度であり、図１に示すように、ドラムタイプの磁気コア２と、２本の導線３Ａ、導線３Ｂと、金属端子９、金属端子１０とより構成されている。磁気コア２は、フェライト等の磁性粉体が圧縮、焼結等過程を経て成形されている。 A coil component according to an embodiment of the present invention will be described with reference to FIGS. The coil component 1 is a common mode filter used for a high-speed operation signal interface, and its dimension is about 4 mm in the longitudinal direction. As shown in FIG. 1, a drum-type magnetic core 2 and two conductors 3A The conductive wire 3B, the metal terminal 9, and the metal terminal 10 are included. The magnetic core 2 is formed by a magnetic powder such as ferrite being compressed and sintered.

図２に示すように、磁気コア２は長手方向に直交する断面が略長方形の巻芯部５と、巻芯部５の長手方向両端に設けられ、略同一形状の一対の鍔部４、４より構成される。巻芯部５には図２に示すように頂面５Ａと、底面５Ｆと、側面５Ｄと、側面５Ｅとにより構成され、図１に示すように、２本の導線３Ａ、導線３Ｂがこれら頂面５Ａと、底面５Ｆと、側面５Ｄと、側面５Ｅとの外周に巻回される。以下、鍔部４については略同一形状であるため、特に明記しない限り、片側のみで説明し、図２に示すように、巻芯部５の長手方向をｘ軸方向、巻芯部５の幅方向をｙ軸方向、ｘ軸方向とｙ軸方向とに直交する方向をｚ軸方向と定義して説明する。 As shown in FIG. 2, the magnetic core 2 is provided with a core part 5 having a substantially rectangular cross section perpendicular to the longitudinal direction, and a pair of flange parts 4, 4 having substantially the same shape provided at both ends in the longitudinal direction of the core part 5. Consists of. As shown in FIG. 2, the core 5 is composed of a top surface 5A, a bottom surface 5F, a side surface 5D, and a side surface 5E. As shown in FIG. 1, two conductors 3A and 3B are formed on the top. It is wound around the outer periphery of surface 5A, bottom surface 5F, side surface 5D, and side surface 5E. Hereinafter, since the flange part 4 has substantially the same shape, unless otherwise specified, only one side will be described. As shown in FIG. 2, the longitudinal direction of the core part 5 is the x-axis direction, and the width of the core part 5 A direction is defined as a y-axis direction, and a direction orthogonal to the x-axis direction and the y-axis direction is defined as a z-axis direction.

鍔部４は、図２に示すように、巻芯部５と連結する部分である主胴部６と、主胴部６よりｙ軸方向に延出されている副胴部７と、副胴部７の反対方向に延出されている副胴部８より構成されている。これら副胴部７と副胴部８とは、巻芯部５の幅中心を通るｚｘ平面に対して面対称な構成になっている。 As shown in FIG. 2, the flange portion 4 includes a main body portion 6 which is a portion connected to the core portion 5, a sub-body portion 7 extending from the main body portion 6 in the y-axis direction, and a sub-body. It is composed of a sub barrel portion 8 extending in the direction opposite to the portion 7. The auxiliary body part 7 and the auxiliary body part 8 are configured to be plane-symmetric with respect to the zx plane passing through the width center of the core part 5.

主胴部６は、ｚ軸方向が長手方向でありｙ軸方向が幅方向であって巻芯部５と略同一の幅である略長方形に形成されており、巻芯部５の頂面５Ａより突出してｘｙへ位面と略平行な頂面６Ａと、巻芯部５に連結される側面６Ｃと、側面６Ｃの対向面であって頂面６Ａと略直交する側面６Ｂと、巻芯部５の下面５Ｆより突出して頂面６Ａと略平行な下面６Ｆと、頂面６Ａと下面６Ｆと側面６Ｂと側面６Ｃとに連結する側面６Ｄ及び側面６Ｅとを備えて構成されている。 The main body portion 6 is formed in a substantially rectangular shape having a longitudinal direction in the z-axis direction and a width direction in the y-axis direction and substantially the same width as the core portion 5, and the top surface 5 A of the core portion 5. A top surface 6A that protrudes further and is substantially parallel to the xy plane, a side surface 6C that is coupled to the core portion 5, a side surface 6B that is the opposite surface of the side surface 6C and that is substantially orthogonal to the top surface 6A, and the core portion The lower surface 6F protrudes from the lower surface 5F and is substantially parallel to the top surface 6A, and the side surface 6D and the side surface 6E are connected to the top surface 6A, the lower surface 6F, the side surface 6B, and the side surface 6C.

副胴部７は、側面６Ｄよりｙ軸方向に延出されて、ｚ軸方向を長手方向とする略直方体に形成されており、主胴部６の側面６Ｃと同一平面にある側面７Ｃと、下面６Ｆと同一平面にある下面７Ｆとを備えている。また、副胴部７の下面７Ｆに平行かつ対向する位置に頂面７Ａが、主胴部６の頂面６Ａに対して凹んだ位置に設けられ、側面７Ｃに対向して頂面７Ａと略直交する側面７Ｂは、主胴部６の側面６Ｂに対して凹んだ位置に設けられている。これら頂面７Ａと下面７Ｆと側面７Ｂと側面７Ｃとに交差して、側面６Ｄと平行な側面７Ｄが形成されている。 The secondary body portion 7 extends from the side surface 6D in the y-axis direction and is formed in a substantially rectangular parallelepiped shape having the longitudinal direction in the z-axis direction. The side surface 7C is flush with the side surface 6C of the main body portion 6; The lower surface 7F is provided on the same plane as the lower surface 6F. Also, a top surface 7A is provided at a position parallel to and opposed to the lower surface 7F of the sub barrel portion 7 at a position recessed with respect to the top surface 6A of the main barrel portion 6, and substantially opposite to the top surface 7A facing the side surface 7C. The orthogonal side surface 7B is provided at a position recessed with respect to the side surface 6B of the main body portion 6. A side surface 7D parallel to the side surface 6D is formed so as to intersect the top surface 7A, the lower surface 7F, the side surface 7B, and the side surface 7C.

副胴部８は、副胴部７と面対称な構成であり、側面６Ｅよりｙ軸方向に延出されて、頂面８Ａと下面８Ｆと側面８Ｂと側面８Ｃと側面８Ｅとを備えて構成されている。また、図３に示すように、副胴部７の頂面７Ａ及び下面７Ｆの略中心部分には、凹部７ａ、凹部７ｆが形成されており、副胴部８の頂面８Ａ及び下面８Ｆにも同様に凹部８ａ、凹部８ｆが形成されている。 The sub trunk portion 8 is configured symmetrically with the sub trunk portion 7 and extends from the side surface 6E in the y-axis direction, and includes a top surface 8A, a bottom surface 8F, a side surface 8B, a side surface 8C, and a side surface 8E. Has been. Further, as shown in FIG. 3, a concave portion 7 a and a concave portion 7 f are formed at substantially the center portions of the top surface 7 A and the bottom surface 7 F of the sub trunk portion 7. Similarly, a recess 8a and a recess 8f are formed.

尚、後述の金属端子９は、頂面７Ａ、下面７Ｆに対して側面７Ｂの方向より頂面７Ａ、下面７Ｆを狭持するように副胴部７に外挿される。従って側面７Ｂから側面７Ｃへと向かう方向が金属端子９の装着方向Ｓとなり（図３）、頂面７Ａが金属端子９に狭持される第一面、下面７Ｆが同じく狭持される他面、側面７Ｂが金属端子９に対峙する対峙面となる。金属端子１０についても同様に副胴部８に外挿され、側面８Ｂから側面８Ｃへと向かう方向が装着方向Ｓ’となり、頂面８Ａが金属端子１０に狭持される第一面、下面８Ｆが同じく狭持される他面、側面８Ｂが金属端子１０に対峙する対峙面となる。これら装着方向Ｓ、Ｓ’は、ｘ軸方向と略平行な方向である。 A metal terminal 9 described later is extrapolated to the sub barrel portion 7 so as to sandwich the top surface 7A and the bottom surface 7F from the direction of the side surface 7B with respect to the top surface 7A and the bottom surface 7F. Accordingly, the direction from the side surface 7B to the side surface 7C is the mounting direction S of the metal terminal 9 (FIG. 3), the first surface where the top surface 7A is sandwiched by the metal terminal 9, and the other surface where the lower surface 7F is also sandwiched. The side surface 7 B is a facing surface facing the metal terminal 9. Similarly, the metal terminal 10 is extrapolated to the auxiliary body portion 8, the direction from the side surface 8B toward the side surface 8C is the mounting direction S ', and the top surface 8A is held between the metal terminal 10 and the first surface, the bottom surface 8F. Is the other side, and the side surface 8 B is a facing surface facing the metal terminal 10. These mounting directions S and S 'are directions substantially parallel to the x-axis direction.

副胴部７の頂面７Ａと側面７Ｂとが交差する個所、及び下面７Ｆと側面７Ｂとが交差する個所には、図３に示すように、装着方向Ｓの反対方向に向かって第一面である頂面７Ａと他面である下面７Ｆとの距離が徐々に減少する第一傾斜面７Ｇ及び第二傾斜面７Ｈが設けられている。これら第一傾斜面７Ｇ及び第二傾斜面７Ｈは、それぞれ頂面７Ａ及び下面７Ｆに連接しており、かつ頂面７Ａ及び下面７Ｆに対してそれぞれ約３０°傾斜している。 At the point where the top surface 7A and the side surface 7B of the sub trunk portion 7 intersect and the portion where the lower surface 7F and the side surface 7B intersect, the first surface is directed in the direction opposite to the mounting direction S as shown in FIG. The first inclined surface 7G and the second inclined surface 7H are provided in which the distance between the top surface 7A and the lower surface 7F, which is the other surface, gradually decreases. The first inclined surface 7G and the second inclined surface 7H are connected to the top surface 7A and the lower surface 7F, respectively, and are inclined about 30 ° with respect to the top surface 7A and the lower surface 7F, respectively.

第一傾斜面７Ｇ及び第二傾斜面７Ｈの装着方向Ｓの最上流側には、第一傾斜面７Ｇに連接されると共に側面７Ｂと略直交に交差する第一傾斜導入面７Ｉと、第二傾斜面７Ｈに連接されると共に側面７Ｂと略直交に交差する該第二傾斜導入面７Ｊとが設けられている。よって、頂面７Ａと側面７Ｂとが交差する個所は、第一傾斜面７Ｇ及び第一傾斜導入面７Ｉによって面取りされており、下面７Ｆと側面７Ｂとが交差する個所は、第二傾斜面７Ｈ及び第二傾斜導入面７Ｊにより面取りされている。副胴部８にも同様に第一傾斜面８Ｇ及び第二傾斜面８Ｈ、第一傾斜導入面８Ｉ及び第二傾斜導入面８Ｊが設けられ、頂面８Ａと側面８Ｂとが交差する個所は、第一傾斜面８Ｇ及び第一傾斜導入面８Ｉによって面取りされており、下面８Ｆと側面８Ｂとが交差する個所は、第二傾斜面８Ｈ及び第二傾斜導入面８Ｊにより面取りされている。 On the most upstream side in the mounting direction S of the first inclined surface 7G and the second inclined surface 7H, a first inclined introduction surface 7I connected to the first inclined surface 7G and intersecting the side surface 7B substantially orthogonally, and a second The second inclined introduction surface 7J that is connected to the inclined surface 7H and intersects the side surface 7B substantially orthogonally is provided. Therefore, the portion where the top surface 7A and the side surface 7B intersect is chamfered by the first inclined surface 7G and the first inclined introduction surface 7I, and the portion where the lower surface 7F and the side surface 7B intersect is the second inclined surface 7H. And the second inclined introduction surface 7J is chamfered. Similarly, the first body 8G and the second slope 8H, the first slope introduction face 8I, and the second slope introduction face 8J are also provided in the sub trunk portion 8, and the point where the top face 8A and the side face 8B intersect is as follows. The first inclined surface 8G and the first inclined introduction surface 8I are chamfered, and the portion where the lower surface 8F intersects the side surface 8B is chamfered by the second inclined surface 8H and the second inclined introduction surface 8J.

副胴部７には、電極となる略コの字形状の金属端子９が取り付けられ、同様に副胴部８には金属端子１０が取り付けられる。この金属端子９及び金属端子１０も、副胴部７及び副胴部８と同様の面対称な構成になっている。 A substantially U-shaped metal terminal 9 serving as an electrode is attached to the sub barrel portion 7, and similarly, a metal terminal 10 is attached to the sub barrel portion 8. The metal terminal 9 and the metal terminal 10 also have the same plane-symmetric configuration as the sub barrel portion 7 and the sub barrel portion 8.

略コの字形状の金属端子９は、略コの字形状の一対の腕部分となる第一狭持部９Ａ及び第二狭持部９Ｆと、一対の腕部分を連結する連結部９Ｂとにより構成される。これら、第一狭持部９Ａ及び第二狭持部９Ｆと連結部９Ｂとは、一枚の金属板が折り曲げ加工されて、第一狭持部９Ａと第二狭持部９Ｆとが略平行となると共に第一狭持部９Ａ及び第二狭持部９Ｆと連結部９Ｂとが略直交し、第一狭持部９Ａと第二狭持部９Ｆとの間の距離が、副胴部７のｚ軸方向長さと略同一の距離になるように形成されている。また第一狭持部９Ａの略コの字形状の内面には、略コの字形状の内側に向けて突出する凸部９Ｇが設けられており、第二狭持部９Ｆの略コの字形状の内面には、略コの字形状の内側に向けて突出する凸部９Ｈが設けられている。金属端子１０も金属端子９と同様に形成され、第一狭持部１０Ａの略コの字形状の内面には、略コの字形状の内側に向けて突出する凸部１０Ｇが設けられており、第二狭持部１０Ｆの略コの字形状の内面には、略コの字形状の内側に向けて突出する凸部１０Ｈが設けられている。 The substantially U-shaped metal terminal 9 includes a first holding portion 9A and a second holding portion 9F that are a pair of substantially U-shaped arm portions, and a connecting portion 9B that connects the pair of arm portions. Composed. The first holding part 9A, the second holding part 9F, and the connecting part 9B are formed by bending a single metal plate so that the first holding part 9A and the second holding part 9F are substantially parallel. The first sandwiching portion 9A, the second sandwiching portion 9F, and the connecting portion 9B are substantially orthogonal to each other, and the distance between the first sandwiching portion 9A and the second sandwiching portion 9F is the sub trunk portion 7. It is formed so as to be the same distance as the length in the z-axis direction. Further, a convex portion 9G that protrudes toward the inside of the substantially U-shape is provided on the inner surface of the first sandwiching portion 9A, and the substantially U-shape of the second sandwiching portion 9F is provided. On the inner surface of the shape, a convex portion 9H is provided that protrudes toward the inner side of the substantially U-shape. The metal terminal 10 is also formed in the same manner as the metal terminal 9, and a convex portion 10 G is provided on the substantially U-shaped inner surface of the first holding portion 10 A so as to protrude toward the inner side of the approximately U-shape. A convex portion 10H that protrudes toward the inside of the substantially U-shape is provided on the inner surface of the substantially U-shape of the second holding portion 10F.

この金属端子９は、図５に示すように、第一狭持部９Ａ内面と頂面７Ａとが当接して凹部７ａに凸部９Ｇが係合し、第二狭持部９Ｆ内面と下面７Ｆとが当接して凹部７ｆに凸部９Ｈが係合し、連結部９Ｂ内面と側面７Ｂとが当接して副胴部７に固定される。金属端子１０も金属端子９と同様に副胴部８に固定される。 As shown in FIG. 5, the metal terminal 9 has the inner surface of the first holding portion 9A and the top surface 7A in contact with each other, the convex portion 9G is engaged with the concave portion 7a, and the inner surface of the second holding portion 9F and the lower surface 7F. And the convex portion 9H engages with the concave portion 7f, and the inner surface of the connecting portion 9B and the side surface 7B come into contact with each other and are fixed to the auxiliary trunk portion 7. Similarly to the metal terminal 9, the metal terminal 10 is also fixed to the sub trunk portion 8.

また、金属端子９の第一狭持部９Ａには、第一狭持部９Ａの主胴部６の側面６Ｄと対峙する側部分より切片９Ｉが設けられている。この切片９Ｉは、切片９Ｉと第一狭持部９Ａとの連接部分で、第一狭持部９Ａの外面と当接するように折り曲げ加工されている。また、金属端子９の第一狭持部９Ａから、連結部９Ｂの第一狭持部９Ａとの連接個所付近にかけて、その幅が第二狭持部９Ｆと連結部９Ｂの第二狭持部９Ｆとの連接個所付近に比べて狭く形成されている。金属端子１０にも金属端子９と同様に切片１０Ｉが設けられ、同様に幅が狭く形成されている。 Further, the first holding portion 9A of the metal terminal 9 is provided with a section 9I from a side portion facing the side surface 6D of the main barrel portion 6 of the first holding portion 9A. The section 9I is bent so as to be in contact with the outer surface of the first holding section 9A at the connecting portion between the section 9I and the first holding section 9A. Further, the width of the second pinching portion 9F and the second holding portion of the connecting portion 9B extends from the first holding portion 9A of the metal terminal 9 to the vicinity of the connecting portion of the connecting portion 9B with the first holding portion 9A. It is formed narrower than the vicinity of the connection point with 9F. Similarly to the metal terminal 9, the metal terminal 10 is also provided with a section 10I and is similarly narrow in width.

以下、金属端子９及び金属端子１０を磁気コア２に取り付けてコイル部品１を形成する過程について説明する。金属端子１０及び副胴部８の形状は金属端子９及び副胴部７と面対称で同様であるため、特に言及しない限りは、金属端子１０は金属端子９と同じ過程で取り付けられる。 Hereinafter, a process of forming the coil component 1 by attaching the metal terminal 9 and the metal terminal 10 to the magnetic core 2 will be described. Since the shapes of the metal terminal 10 and the sub barrel portion 8 are the same as those of the metal terminal 9 and the sub barrel portion 7 in plane symmetry, the metal terminal 10 is attached in the same process as the metal terminal 9 unless otherwise specified.

金属端子９が鍔部４の副胴部７に取り付けられる際には、図４に示すように連結部９Ｂの略コの字形状内面に接着剤１１が塗布される。そして金属端子９が、連結部９Ｂ内面と副胴部７の側面７Ｂとが略平行に対峙する状態に配置される。この状態で金属端子９は副胴部７に近接されて、第一狭持部９Ａ及び第二狭持部９Ｆの連結部９Ｂとの連結個所の反対側端部がそれぞれ頂面７Ａ上及び下面７Ｆ上に沿うように副胴部７に外挿される。 When the metal terminal 9 is attached to the sub barrel portion 7 of the flange portion 4, an adhesive 11 is applied to the substantially U-shaped inner surface of the connecting portion 9B as shown in FIG. And the metal terminal 9 is arrange | positioned in the state which the connection part 9B inner surface and the side surface 7B of the sub trunk | drum 7 oppose substantially parallel. In this state, the metal terminal 9 is brought close to the sub barrel portion 7, and the opposite end portions of the first holding portion 9A and the connecting portion 9B of the second holding portion 9F are on the top surface 7A and the lower surface, respectively. It is extrapolated to the sub trunk | drum 7 along 7F.

金属端子９の第一狭持部９Ａと第二狭持部９Ｆとの間の距離は、副胴部７のｚ軸方向長さと略同一の距離となるように成形されている。第一傾斜面７Ｇと第二傾斜面７Ｈとの間の装着方向最上流側での距離は、副胴部７のｚ軸方向長さより短いため、第一狭持部９Ａと第二狭持部９Ｆとの間の距離よりも短くなる。よって、金属端子９を副胴部７に外挿する際には、少なくとも第一傾斜面７Ｇと第二傾斜面７Ｈとの装着方向最上流側端部は第一傾斜面７Ｇと第二傾斜面７Ｈとの間に挿入され、第一傾斜面７Ｇと第二傾斜面７Ｈが側面７Ｂに当接することなく頂面７Ａ上及び下面７Ｆ上に沿うことが可能となる。 The distance between the first holding portion 9 A and the second holding portion 9 F of the metal terminal 9 is shaped to be substantially the same as the length of the auxiliary trunk portion 7 in the z-axis direction. Since the distance on the most upstream side in the mounting direction between the first inclined surface 7G and the second inclined surface 7H is shorter than the length in the z-axis direction of the sub trunk portion 7, the first holding portion 9A and the second holding portion It becomes shorter than the distance between 9F. Therefore, when extrapolating the metal terminal 9 to the sub-body portion 7, at least the first flow side end in the mounting direction of the first inclined surface 7G and the second inclined surface 7H is the first inclined surface 7G and the second inclined surface. 7H and the first inclined surface 7G and the second inclined surface 7H can be along the top surface 7A and the lower surface 7F without contacting the side surface 7B.

また、金属端子９や磁気コア２の形成時の公差により第一狭持部９Ａと第二狭持部９Ｆとの間の距離が副胴部７のｚ軸方向長さより若干短くなる場合や、金属端子９と磁気コア２との取付時の位置が若干ずれる場合がある。この場合に第一狭持部９Ａと第二狭持部９Ｆとの端部が頂面７Ａ上及び下面７Ｆ上に沿うことができず、第一狭持部９Ａと第二狭持部９Ｆとの端部がそれぞれ第一傾斜面７Ｇ及び第二傾斜面７Ｈに当接する。 In addition, when the distance between the first holding portion 9A and the second holding portion 9F is slightly shorter than the length of the sub barrel portion 7 in the z-axis direction due to tolerance when forming the metal terminal 9 or the magnetic core 2, The position at the time of attachment with the metal terminal 9 and the magnetic core 2 may shift | deviate a little. In this case, the end portions of the first holding portion 9A and the second holding portion 9F cannot extend along the top surface 7A and the lower surface 7F, and the first holding portion 9A and the second holding portion 9F Are in contact with the first inclined surface 7G and the second inclined surface 7H, respectively.

第一傾斜面７Ｇ及び第二傾斜面７Ｈは、頂面７Ａ及び下面７Ｆに対してそれぞれ３０°の傾斜角であるため、第一傾斜面７Ｇ及び第二傾斜面７Ｈに当接した第一狭持部９Ａと第二狭持部９Ｆとの端部は、第一傾斜面７Ｇ上及び第二傾斜面７Ｈ上を滑り、頂面７Ａ及び下面７Ｆへと導かれて頂面７Ａ上及び下面７Ｆ上に沿うと共に副胴部７を狭持することになる。よって、第一狭持部９Ａと第二狭持部９Ｆとの端部が、装着方向Ｓと略垂直な側面７Ｂに強接触しようとしても、第一狭持部９Ａと第二狭持部９Ｆとの端部は、第一傾斜面７Ｇ及び第二傾斜面７Ｈに当接し、コア欠けや第一狭持部９Ａ及び第二狭持部９Ｆの変形等を生じることなく、金属端子９が副胴部７に外挿可能となる。 Since the first inclined surface 7G and the second inclined surface 7H have an inclination angle of 30 ° with respect to the top surface 7A and the lower surface 7F, respectively, the first narrow surface 7G and the second inclined surface 7H are in contact with each other. The end portions of the holding portion 9A and the second holding portion 9F slide on the first inclined surface 7G and the second inclined surface 7H, and are guided to the top surface 7A and the lower surface 7F so as to be on the top surface 7A and the lower surface 7F. Along the top, the auxiliary body part 7 is held. Therefore, even if the end portions of the first holding portion 9A and the second holding portion 9F try to make strong contact with the side surface 7B substantially perpendicular to the mounting direction S, the first holding portion 9A and the second holding portion 9F. The end of the metal terminal 9 comes into contact with the first inclined surface 7G and the second inclined surface 7H , and the metal terminal 9 is connected to the second terminal without causing the chipping of the core or the deformation of the first holding portion 9A and the second holding portion 9F. It becomes possible to extrapolate to the trunk portion 7.

この状態で金属端子９が更に外挿されて副胴部７に近接し、凸部９Ｇと凹部７ａ、凸部９Ｈと凹部７ｆとがそれぞれ係合すると共に、連結部９Ｂの略コの字形状内面と側面７Ｂとが当接する。連結部９Ｂ内面には接着剤１１が塗布されているため、接着剤１１は、連結部９Ｂ内面と側面７Ｂとの間に、毛細管現象により拡がっていく。しかし、連結部９Ｂと第一狭持部９Ａ及び第二狭持部９Ｆとの連接個所が直交して、略直角部分であるのに対し、側面７Ｂと頂面７Ａ及び下面７Ｆとは、第一傾斜面７Ｇ、第二傾斜面７Ｈ等により面取りされた状態で連接しているため、連結部９Ｂと第一狭持部９Ａと第一傾斜面７Ｇと第一傾斜導入面７Ｉとで囲まれる第一空間、及び連結部９Ｂと第二狭持部９Ｆと第二傾斜面７Ｈと第二傾斜導入面７Ｊとで囲まれる第二空間がそれぞれ形成される。 In this state, the metal terminal 9 is further extrapolated so as to be close to the sub barrel portion 7, and the convex portion 9G and the concave portion 7a are engaged with each other, and the convex portion 9H and the concave portion 7f are engaged with each other. The inner surface and the side surface 7B abut. Since the adhesive 11 is applied to the inner surface of the connecting portion 9B, the adhesive 11 spreads between the inner surface of the connecting portion 9B and the side surface 7B by capillary action. However, the connecting portions of the connecting portion 9B, the first holding portion 9A, and the second holding portion 9F are orthogonal to each other and are substantially right-angled portions, whereas the side surface 7B, the top surface 7A, and the lower surface 7F are Since they are connected in a chamfered state by one inclined surface 7G, second inclined surface 7H, etc., they are surrounded by the connecting portion 9B, the first holding portion 9A, the first inclined surface 7G, and the first inclined introducing surface 7I. A second space surrounded by the first space and the connecting portion 9B, the second holding portion 9F, the second inclined surface 7H, and the second inclined introduction surface 7J is formed.

毛細管現象は、一般に液体が間隔の狭い個所にある時に発生し、間隔が広い個所では発生し難い。よって、第一空間を形成することにより、接着剤１１が第一空間より先、即ち、頂面７Ａと第一狭持部９Ａとの間に侵入することが抑制される。同様に連結部９Ｂと第二狭持部９Ｆと第二傾斜面７Ｈと第二傾斜導入面７Ｊとで囲まれる第二空間を形成することにより、下面７Ｆと第二狭持部９Ｆとの間に接着剤が侵入することが抑制される。また、上記の隙間で毛細管現象により接着剤１１が拡がることが抑制されるので、接着剤１１の塗布量を厳密に調整する必要が無くなり、作業性が向上する。 Capillary phenomenon generally occurs when the liquid is in a narrow space, and hardly occurs in a wide space. Therefore, by forming the first space , the adhesive 11 is prevented from entering before the first space , that is, between the top surface 7A and the first holding portion 9A. Similarly, by forming a second space surrounded by the connecting portion 9B, the second holding portion 9F, the second inclined surface 7H, and the second inclined introducing surface 7J, between the lower surface 7F and the second holding portion 9F. It is possible to prevent the adhesive from entering the surface. Moreover, since it is suppressed that the adhesive agent 11 spread | diffuses by a capillary phenomenon in said clearance gap, it becomes unnecessary to adjust the application quantity of the adhesive agent 11 strictly, and workability | operativity improves.

金属端子９と同様に金属端子１０を取り付けた後に、巻芯部５に導線３Ａ、導線３Ｂを巻回する。これら巻回された導線３Ａ、導線３Ｂの端部は、両方の鍔部４、４に設けられたそれぞれの金属端子９及び金属端子１０の第一狭持部９Ａと切片９Ｉ、及び第一狭持部１０Ａと切片１０Ｉとが連接する位置へｘ軸方向と略平行に配置される。その後にアーク溶接等により熱融着され、金属端子９及び金属端子１０と電気的に継線される。この時に頂面７Ａと第一狭持部９Ａとの間、及び頂面８Ａと第一狭持部１０Ａとの間のいずれにも接着剤１１は侵入していないため、接着剤１１が強熱されて炭化物等が生成されることは抑制される。 After the metal terminal 10 is attached in the same manner as the metal terminal 9, the conducting wire 3 A and the conducting wire 3 B are wound around the core portion 5. The ends of the wound conducting wire 3A and conducting wire 3B are respectively connected to the metal terminals 9 and the first holding portions 9A and the sections 9I of the metal terminals 9 and the metal terminals 10 and the first narrow portions. The holding portion 10A and the segment 10I are arranged substantially parallel to the x-axis direction at a position where they are connected. Thereafter, it is heat-sealed by arc welding or the like, and is electrically connected to the metal terminal 9 and the metal terminal 10. At this time, since the adhesive 11 does not enter between the top surface 7A and the first holding portion 9A and between the top surface 8A and the first holding portion 10A, the adhesive 11 is ignited. The generation of carbides and the like is suppressed.

その後に切片９Ｉ及び切片１０Ｉを第一狭持部９Ａ及び第１狭持部１０Ａと略平行となるように折り曲げて導線３Ａ、導線３Ｂの継線個所を保護し、コイル部品１が完成する。この後に、図２に示す板状コア２０を、それぞれの鍔部４、４の主胴部６、５の頂面５Ａ、５Ａに渡して接着剤を用いて固定し、板状コア２０と磁気コア２とにより閉磁路を形成してもよい。この場合に、金属端子９及び金属端子１０の継線個所である頂面７Ａ、頂面８Ａは、主胴部６の頂面６Ａより凹んだ位置にあり、頂面６Ａと頂面７Ａ及び頂面８Ａとの間に段差が形成される。よって、面６Ａ上に板状コア２０を固定した場合に、この段差内に継線個所が収まり、板状コア２０と継線部分とは接触することなく良好に板状コア２０が固定される。 Thereafter, the section 9I and the section 10I are bent so as to be substantially parallel to the first holding section 9A and the first holding section 10A to protect the connecting portions of the conducting wires 3A and 3B, and the coil component 1 is completed. Thereafter, the plate-like core 20 shown in FIG. 2 is fixed to the top surfaces 5A and 5A of the main body portions 6 and 5 of the flange portions 4 and 4 by using an adhesive, and the plate-like core 20 and the magnetic core 20 are magnetically bonded. A closed magnetic path may be formed by the core 2. In this case, the top surface 7A and the top surface 8A, which are the connection points of the metal terminal 9 and the metal terminal 10, are in a position recessed from the top surface 6A of the main body 6, and the top surface 6A, the top surface 7A and the top surface A step is formed between the surface 8A. Therefore, when the plate-shaped core 20 is fixed on the surface 6A, the connecting portion is accommodated in the step, and the plate-shaped core 20 is fixed well without contacting the plate-shaped core 20 and the connecting portion. .

完成したコイル部品１を、図６に示すように、基板１２上の実装面１２Ａ、実装面１２Ｂ上に実装する場合には、第二狭持部９Ｆ及び第二狭持部１０Ｆの略コの字形状外面が実装面側となる。よって、基板のランドパターンにクリーム半田を塗布した後に熱融着をおこない、コイル部品１を実装面側で基板上に実装する。この場合に第二狭持部９Ｆ及び第二狭持部１０Ｆは加熱個所となるが、第二狭持部９Ｆと下面７Ｆとの間、及び第二狭持部１０Ｆと下面８Ｆとの間には接着剤１１は介在しないため、好適に熱融着により実装可能となる。 When the completed coil component 1 is mounted on the mounting surface 12A and the mounting surface 12B on the substrate 12, as shown in FIG. 6, the second holding portion 9F and the second holding portion 10F are substantially The letter-shaped outer surface is the mounting surface side. Therefore, after applying cream solder to the land pattern of the substrate, heat fusion is performed, and the coil component 1 is mounted on the substrate on the mounting surface side. In this case, the second holding portion 9F and the second holding portion 10F serve as heating places, but between the second holding portion 9F and the lower surface 7F and between the second holding portion 10F and the lower surface 8F. Since the adhesive 11 does not intervene, it can be suitably mounted by heat fusion.

コイル部品１が実装された状態では、上述の熱融着により基板１２の実装面１２Ａ及び実装面１２Ｂと金属端子９及び金属端子１０とは接合される。図７に示すように基板１２が撓んだ場合は、金属端子９及び金属端子１０も基板１２に追従して移動する。この場合には金属端子９及び金属端子１０と、磁気コア２との間にモーメント力がかかる状態になる。 In a state where the coil component 1 is mounted, the mounting surface 12A and the mounting surface 12B of the substrate 12 are bonded to the metal terminal 9 and the metal terminal 10 by the above-described heat fusion. As shown in FIG. 7, when the substrate 12 is bent, the metal terminal 9 and the metal terminal 10 also move following the substrate 12. In this case, a moment force is applied between the metal terminal 9 and the metal terminal 10 and the magnetic core 2.

しかし、当該実施の形態にかかるコイル部品１では、金属端子９及び金属端子１０と副胴部７及び副胴部８とは接着されているが、接着面が側面７Ｂ及び側面８Ｂのみであるため、基板１２が撓んで金属端子９及び金属端子１０がその位置を変化させたとしても、例えば金属端子９では第一狭持部９Ａ及び第二狭持部９Ｆは、凸部９Ｇ及び凸部９Ｈの係合が係脱して第一狭持部９Ａと頂面７Ａ上、及び第二狭持部９Ｆと下面７Ｆ上との間がずれる。その結果、第一狭持部９Ａ及び第二狭持部９Ｆは、第一狭持部９Ａ及び第二狭持部９Ｆの略コの字形状内面と、頂面７Ａ上及び下面７Ｆ上との当接が解除された状態で副胴部７を狭持することになる。側面７Ｂと連結部９Ｂの略コの字形状内面とは、接着された接着剤１１がその弾性により延びて、側面７Ｂと連結部９Ｂの略コの字形状内面との接合部分の一部が解離した状態で保持されることになる。 However, in the coil component 1 according to the embodiment, the metal terminal 9 and the metal terminal 10 are bonded to the sub barrel portion 7 and the sub barrel portion 8, but the bonding surfaces are only the side surface 7B and the side surface 8B. Even if the substrate 12 is bent and the positions of the metal terminal 9 and the metal terminal 10 are changed, for example, in the metal terminal 9, the first holding portion 9A and the second holding portion 9F are the protruding portion 9G and the protruding portion 9H. Is disengaged and the first holding portion 9A and the top surface 7A are shifted from each other, and the second holding portion 9F and the lower surface 7F are shifted from each other. As a result, the first holding portion 9A and the second holding portion 9F are formed by the substantially U-shaped inner surfaces of the first holding portion 9A and the second holding portion 9F, the top surface 7A, and the lower surface 7F. The auxiliary body portion 7 is held in a state where the contact is released. The side surface 7B and the substantially U-shaped inner surface of the connecting portion 9B are such that the bonded adhesive 11 extends due to its elasticity, and a part of the joint portion between the side surface 7B and the approximately U-shaped inner surface of the connecting portion 9B is formed. It will be held in a dissociated state.

よって、金属端子９及び金属端子１０と、磁気コア２との間のモーメント力は、第一狭持部９Ａと頂面７Ａ上、及び第二狭持部９Ｆと下面７Ｆ上との間のずれ、及び側面７Ｂと連結部９Ｂの略コの字形状内面との接合部分の一部解離と、第一狭持部１０Ａと頂面８Ａ上、及び第二狭持部１０Ｆと下面８Ｆ上との間のずれ、及び側面８Ｂと連結部１０Ｂの略コの字形状内面との接合部分の一部解離とにより吸収され、基板１２が撓んだとしても磁気コア２が破壊されることを防止することが可能となり、コイル部品１全体としての撓み強度を向上させることが可能となる。 Therefore, the moment force between the metal terminal 9 and the metal terminal 10 and the magnetic core 2 is shifted between the first holding portion 9A and the top surface 7A, and between the second holding portion 9F and the lower surface 7F. And part of the joint between the side surface 7B and the substantially U-shaped inner surface of the connecting portion 9B, the first holding portion 10A and the top surface 8A, and the second holding portion 10F and the lower surface 8F The magnetic core 2 is prevented from being broken even if the substrate 12 is bent by being absorbed by the gap and the partial dissociation of the joint portion between the side surface 8B and the substantially U-shaped inner surface of the connecting portion 10B. It becomes possible, and it becomes possible to improve the bending strength as the coil component 1 whole.

磁気コア２は上述のようにフェライト等の磁性粉体を型枠である金型内に入れ、これを圧縮して成型する。この磁気コア２を成型する際に、金型の製作上の問題から、側面７Ｂを形成するために略平面上の金型が使用され、この側面７Ｂを形成する金型上に第一傾斜面７Ｇ等を形成する金型が接合されて磁気コア２が成型される。この時に、第一傾斜面７Ｇは、側面７Ｂに対して約６０°の角度を有するため、金型もその先端が６０°となる。一般に鋭角な金型を使用すると、その先端の鋭角部分が圧縮時の圧力により変形し、他の金型に比べて耐用年数が低下する。よって、先端部分に少なくとも側面７Ｂを形成する金型と略直交する第一傾斜導入面７Ｉを形成して鋭角部分を無くし、金型の耐用年数を向上させる。同様に第二傾斜導入面７Ｊが設けられる。 As described above, the magnetic core 2 is molded by putting magnetic powder such as ferrite in a mold as a mold and compressing it. When molding the magnetic core 2, a substantially flat mold is used to form the side surface 7B due to the manufacturing problem of the mold, and the first inclined surface is formed on the mold forming the side surface 7B. The magnetic core 2 is molded by bonding a mold for forming 7G or the like. At this time, since the first inclined surface 7G has an angle of about 60 ° with respect to the side surface 7B, the tip of the mold is also 60 °. In general, when an acute mold is used, the acute angle portion at the tip thereof is deformed by pressure during compression, and the service life is reduced compared to other molds. Therefore, the first inclined introduction surface 7I that is substantially orthogonal to the mold that forms at least the side surface 7B is formed at the tip portion to eliminate the acute angle portion, thereby improving the service life of the mold. Similarly, a second inclined introduction surface 7J is provided.

本実施の形態においては、第一傾斜面７Ｇ、第二傾斜面７Ｈは、それぞれ頂面７Ａ及び下面７Ｆに対して３０°の傾斜を備えている。この傾斜角度を急角度とし、例えば４５°を超える角度とすると、第一傾斜面７Ｇ及び第二傾斜面７Ｈと第一狭持部９Ａ及び第二狭持部９Ｆの端部とが強接触した場合に、第一狭持部９Ａ及び第二狭持部９Ｆの端部が傾斜に沿って滑らかに移動せず、コア欠け等が発生する場合がある。 In the present embodiment, the first inclined surface 7G and the second inclined surface 7H have an inclination of 30 ° with respect to the top surface 7A and the lower surface 7F, respectively. If this inclination angle is a steep angle, for example, an angle exceeding 45 °, the first inclined surface 7G and the second inclined surface 7H are in strong contact with the end portions of the first holding portion 9A and the second holding portion 9F. In some cases, the end portions of the first holding portion 9A and the second holding portion 9F do not move smoothly along the inclination, and a core chip or the like may occur.

また、逆に傾斜角度を緩角度、例えば１０°未満とすると、頂面７Ａ及び下面７Ｆに対して第一傾斜面７Ｇ及び第二傾斜面７Ｈが大きくなりすぎ、頂面７Ａ及び下面７Ｆと第一狭持部９Ａ及び第二狭持部９Ｆとが当接する面積が小さくなって、充分に狭持することができなくなる。よって、傾斜角度は少なくとも１０°以上４５°以下とし、好適には２０度以上３５°以下とする。 Conversely, if the inclination angle is a gentle angle, for example, less than 10 °, the first inclined surface 7G and the second inclined surface 7H become too large with respect to the top surface 7A and the lower surface 7F, and the top surface 7A and the lower surface 7F The area of contact between the first holding portion 9A and the second holding portion 9F becomes small, and cannot be held sufficiently. Therefore, the inclination angle is at least 10 ° to 45 °, preferably 20 ° to 35 °.

尚、本発明に係るコイル部品は、上記実施の形態に限定されず、特許請求の範囲内で種々の変更や改良を行うことが可能である。 The coil component according to the present invention is not limited to the above embodiment, and various changes and improvements can be made within the scope of the claims.

実施の形態にかかるコイル部品の平面図。The top view of the coil components concerning embodiment. 実施の形態にかかるコイル部品の分解斜視図。The disassembled perspective view of the coil components concerning embodiment. 実施の形態にかかるコイル部品の磁気コアの断面図。Sectional drawing of the magnetic core of the coil components concerning embodiment. 実施の形態にかかるコイル部品の副胴部と金属端子との係合過程を表す側面図。The side view showing the engagement process of the sub trunk | drum of the coil components concerning embodiment, and a metal terminal. 実施の形態にかかるコイル部品の副胴部と金属端子との係合状態を表す側面図。The side view showing the engagement state of the sub trunk | drum and metal terminal of the coil components concerning embodiment. 実施の形態にかかるコイル部品を基板上に実装した状態の側面図。The side view of the state which mounted the coil components concerning embodiment on a board | substrate. 実施の形態にかかるコイル部品を基板上に実装し、基板が撓んだ状態の側面図。The side view of the state which mounted the coil components concerning embodiment on the board | substrate, and the board | substrate bent.

符号の説明Explanation of symbols

１コイル部品２磁気コア３Ａ導線３Ｂ導線４鍔部
５巻芯部５Ａ頂面５Ｄ側面５Ｅ側面５Ｆ下面
６主胴部６Ａ導線６Ｂ導線６Ｃ側面６Ｄ側面６Ｅ側面
６Ｆ下面７副胴部７Ａ頂面７Ｂ側面７Ｃ側面７Ｄ側面
７Ｆ下面７Ｇ第一傾斜面７Ｈ第二傾斜面７Ｉ第一傾斜導入面
７Ｊ第二傾斜導入面７ａ凹部７ｆ凹部８副胴部８Ａ頂面
８Ｂ側面８Ｃ側面８Ｅ側面８Ｆ下面８Ｇ第一傾斜面
８Ｈ第二傾斜面８Ｉ第一傾斜導入面８Ｊ第二傾斜導入面８ａ凹部
８ｆ凹部９金属端子９Ａ第一狭持部９Ｂ連結部
９Ｆ第二狭持部９Ｇ凸部９Ｈ凸部９Ｉ切片１０金属端子
１０Ａ第一狭持部１０Ｂ連結部１０Ｆ第二狭持部１０Ｇ凸部
１０Ｈ凸部１０Ｉ切片１１接着剤１２基板１２Ａ実装面
１２Ｂ実装面２０板状コア DESCRIPTION OF SYMBOLS 1 Coil component 2 Magnetic core 3A Conductive wire 3B Conductive wire 4 Eave part 5 Core part 5A Top surface 5D Side surface 5E Side surface 5F Lower surface 6 Main trunk part 6A Conductive wire 6B Conductive wire 6C Side surface 6D Side surface 6E Side surface 6F Lower surface 7A Top surface 7A Top surface 7B Side surface 7C Side surface 7D Side surface 7F Lower surface 7G First inclined surface 7H Second inclined surface 7I First inclined introduction surface 7J Second inclined introduction surface 7a Recess 7f Recess 8 Sub trunk 8A Top surface 8B Side surface 8C Side surface 8E Side surface 8F Lower surface 8G First surface One inclined surface 8H Second inclined surface 8I First inclined introducing surface 8J Second inclined introducing surface 8a Recessed portion 8f Recessed portion 9 Metal terminal 9A First holding portion 9B Connecting portion 9F Second holding portion 9G Convex portion 9H Convex portion 9I Intercept DESCRIPTION OF SYMBOLS 10 Metal terminal 10A 1st clamping part 10B Connection part 10F 2nd clamping part 10G Convex part 10H Convex part 10I Section 11 Adhesive 12 Board | substrate 12A Mounting surface 12B Mounting surface 20 Plate core

Claims

巻芯部と、該巻芯部の両端にそれぞれ設けられた、一面と該一面に対向する他面とを有する鍔部と、を備えたコアと、
該一面に平行に延びる第一挟持部と該他面に平行に延びる第二挟持部と該第一挟持部と該第二挟持部とを繋げる連結部とを有し、該鍔部に装着されて該一面と該他面とを狭持する金属端子と、
該巻芯部に巻回されると共に該金属端子に両端部が継線される導線と、を備え、
該一面及び該他面の該金属金具が装着される装着方向上流側の端縁部には、該装着方向の反対方向に向かって該一面と該他面との距離が徐々に減少する第一傾斜面及び第二傾斜面がそれぞれ設けられ、該一面と該他面とは互いに平行に延び、該第一傾斜面と該第二傾斜面の装着方向最上流縁間には、該一面と該他面とに略直交し該連結部と当接する対峙面が備えられ、
該金属端子は、該第一挟持部と該第二挟持部と該連結部とにより略コの字状を成し、
該金属端子と該鍔部との間には、少なくとも該第一傾斜面と該第一狭持部と該連結部とで囲まれる空間と、少なくとも該第二傾斜面と該第二狭持部と該連結部とで囲まれる空間とが形成されていることを特徴とするコイル部品。 A core provided with a winding core part, and a collar part provided on each end of the winding core part and having one surface and the other surface facing the one surface;
A first sandwiching portion extending parallel to the one surface; a second sandwiching portion extending parallel to the other surface; and a connecting portion connecting the first sandwiching portion and the second sandwiching portion; A metal terminal sandwiching the one surface and the other surface;
A conductive wire wound around the core and having both ends connected to the metal terminal;
The distance between the one surface and the other surface gradually decreases toward the opposite direction of the mounting direction at the end edge on the upstream side in the mounting direction where the metal fittings on the one surface and the other surface are mounted. An inclined surface and a second inclined surface are provided, respectively, the one surface and the other surface extend in parallel with each other , and the one surface and the second inclined surface are between the first inclined surface and the most upstream edge in the mounting direction of the second inclined surface. An opposing surface that is substantially orthogonal to the other surface and abuts against the connecting portion;
The metal terminal is substantially U-shaped by the first sandwiching portion, the second sandwiching portion, and the connecting portion,
Between the metal terminal and the flange portion, at least a space surrounded by the first inclined surface, the first holding portion and the connecting portion, at least the second inclined surface and the second holding portion. And a space surrounded by the connecting portion is formed .

該連結部と該対峙面との間には接着剤が介在していることを特徴とする請求項一に記載のコイル部品。The coil component according to claim 1, wherein an adhesive is interposed between the connecting portion and the facing surface.

該第一傾斜面と該一面とがなす角度、及び該第二傾斜面と該他面とがなす角度はそれぞれ、１０°以上かつ４５°以下であることを特徴とする請求項１または請求項２に記載のコイル部品。 The angle formed by the first inclined surface and the one surface and the angle formed by the second inclined surface and the other surface are 10 ° or more and 45 ° or less, respectively. 2. The coil component according to 2.

該第一傾斜面と該一面とがなす角度、及び該第二傾斜面と該他面とがなす角度はそれぞれ、２０°以上かつ３５°以下であることを特徴とする請求項３に記載のコイル部品。 The angle formed by the first inclined surface and the one surface and the angle formed by the second inclined surface and the other surface are 20 ° or more and 35 ° or less, respectively. Coil parts.

該第一傾斜面の該装着方向最上流端部には該第一傾斜面に連接される第一傾斜導入面が設けられ、該第二傾斜面の該装着方向最上流端部には該第二傾斜面に連接される第二傾斜導入面が設けられ、該第一傾斜導入面と該第二傾斜導入面とは、該対峙面と略直交に交差することを特徴とする請求項２乃至請求項４いずれか一に記載のコイル部品。 A first inclined introduction surface connected to the first inclined surface is provided at the most upstream end portion in the mounting direction of the first inclined surface, and the first upstream end portion in the mounting direction of the second inclined surface is provided with the first inclined surface. A second inclined introduction surface connected to two inclined surfaces is provided, and the first inclined introduction surface and the second inclined introduction surface intersect the orthogonal surface substantially orthogonally. The coil component according to claim 4.