JP2009038173A - Manufacturing method of coil component - Google Patents

Manufacturing method of coil component Download PDF

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JP2009038173A
JP2009038173A JP2007200426A JP2007200426A JP2009038173A JP 2009038173 A JP2009038173 A JP 2009038173A JP 2007200426 A JP2007200426 A JP 2007200426A JP 2007200426 A JP2007200426 A JP 2007200426A JP 2009038173 A JP2009038173 A JP 2009038173A
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wall portion
bottom wall
core
insulated
metal terminal
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Akira Akasaka
朗 赤坂
Yutaka Hatakeyama
豊 畠山
Kozo Kajiwara
昂三 梶原
Yasuhiko Kitajima
保彦 北島
Toru Takashima
亨 鷹島
Kazuya Abe
和也 阿部
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TDK Corp
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TDK Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide the manufacturing method of a coil component capable of peeling an insulating coating over the entire circumference of an insulating conductor at a connection place. <P>SOLUTION: Disclosed is the manufacturing method of the coil component constituted by winding a core portion of a core with a coated conductor 3 and mounting a metallic terminal 9 to which the end of the coated conductor 3 is connected on the collar portion of the core, which includes the stages of: mounting on the collar portion the metallic terminal having the connection place which has a bottom wall portion 9D and a fusion wall portion 9E in a state wherein the insulating conductor 3 is not connected yet and where the bottom wall portion 9D and fusion wall portion 9E are sectioned in a nearly L shape almost orthogonally to a direction wherein the insulating conductor 3 is extended; arranging the insulating conductor 3 extended from the core portion along the nearly-L-shaped corner portion of the connection place; temporary fixing the arranged insulating conductor 3; cutting the temporarily fixed insulating conductor 3; putting the end of the insulating conductor 3 away from the connection place to form a gap with the corner portion; and peeling the coating by irradiating the part of the insulating conductor 3 spaced apart from the connection place with a plasma jet. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明はコイル部品の製造方法に関し、特にコイルを構成する絶縁導線の被覆を剥離する方法に関する。   The present invention relates to a method for manufacturing a coil component, and more particularly to a method for stripping the coating of insulated conductors constituting a coil.

従来、コイル部品を形成するために、導線として絶縁導線が用いられている。この絶縁導線は、一例として、芯線として銅線等を使用し、その芯線を覆う絶縁被覆として、ポリウレタン被覆を使用している。ポリウレタン被覆は、熱に対してあまり強くないため、ポリウレタン被覆を使用した導線をコイル部品の電極に継線する場合には、予め被覆を剥離させることなく、継線時の熱により継線と同時に被覆を剥離していた。   Conventionally, an insulated conductor is used as a conductor to form a coil component. As an example, this insulated conducting wire uses a copper wire or the like as a core wire, and uses a polyurethane coating as an insulating coating covering the core wire. Since polyurethane coating is not very strong against heat, when connecting conductors using polyurethane coating to the electrode of the coil component, it is not necessary to peel off the coating in advance. The coating was peeled off.

また、コイル部品が使用された電子機器の種類によっては、コイル部品に高耐久性、具体的には耐熱性が要求されることがあり、この場合に絶縁被覆としてポリアミドイミドが使用される場合がある。ポリアミドイミドは、融点がポリウレタンに比較して高いため、継線時の熱によりポリアミドイミド被覆を剥離させることは容易ではない。よって、継線前に被覆を剥離する必要がある。この被覆を剥離する手段としては、特許文献１に示されるようなプラズマジェットを絶縁導線の被覆に照射し、被覆を化学的に分解して剥離する方法が提案されている。
特開２００２−０２８５９７号公報 In addition, depending on the type of electronic device in which the coil component is used, the coil component may be required to have high durability, specifically heat resistance. In this case, polyamideimide may be used as an insulation coating. is there. Since polyamide imide has a higher melting point than polyurethane, it is not easy to peel off the polyamide imide coating by heat at the time of connection. Therefore, it is necessary to peel off the coating before connecting. As a means for peeling off the coating, a method has been proposed in which a plasma jet as shown in Patent Document 1 is irradiated on the coating of the insulated conductor to chemically decompose and peel off the coating.
JP 2002-028597 A

特許文献１に示される装置では、被照射物平面に残留する付着物を除去するため、プラズマジェットを一面側のみから照射している。これに対し絶縁導線は芯線の回りに立体的に絶縁被覆がなされているため、単に一面側のみからプラズマジェットを照射した場合に、反対面側に剥離されない絶縁被覆が残留するおそれがあった。そこで、本発明は、確実に継線箇所の絶縁導線の全周に亘って絶縁被覆を剥離することができるコイル部品の製造方法を提供することを目的とする。   In the apparatus shown in Patent Document 1, the plasma jet is irradiated only from one surface side in order to remove the deposits remaining on the irradiated object plane. On the other hand, since the insulation conducting wire is three-dimensionally covered with insulation around the core wire, there is a possibility that an insulation coating that does not peel off may remain on the opposite surface side when the plasma jet is irradiated only from one surface side. Then, an object of this invention is to provide the manufacturing method of the coil components which can peel insulation coating over the perimeter of the insulated conducting wire of a connection place reliably.

上記課題を解決するために本発明は、芯部と芯部の両端に設けられた一対の鍔部とから構成されるコアと、一対の鍔部にそれぞれ設けられた金属端子と、芯部に沿って配置され芯線と芯線を覆う絶縁被覆とを有する絶縁導線と、を備え、金属端子は絶縁導線が継線される継線箇所を有するコイル部品の製造方法を提供する。この方法では、絶縁導線が継線される前の状態で底壁部と底壁部の端部から立ち上がる側壁部とを少なくとも有すると共に、絶縁導線が延出される方向と略直交する底壁部と側壁部との断面が少なくとも略Ｌ字を成す継線箇所を備えた金属端子を鍔部に装着する工程と、芯部から延出された絶縁導線を継線箇所のＬ字の角部に沿って配置する工程と、角部に配置された絶縁導線を仮固定する工程と、仮固定された絶縁導線を継線箇所の端部に合わせて切断する工程と、継線箇所上の絶縁導線の端部を継線箇所から離間させ絶縁導線と角部との間に隙間を形成する工程と、絶縁導線の継線箇所から離間している部分にプラズマジェットを照射して絶縁被覆を剥離する工程と、を備えている。   In order to solve the above-mentioned problems, the present invention provides a core composed of a core part and a pair of flange parts provided at both ends of the core part, a metal terminal provided on each of the pair of collar parts, and a core part. And an insulated conductor having an insulation coating covering the core wire and covering the core wire, and the metal terminal provides a method of manufacturing a coil component having a connection point where the insulated conductor is connected. In this method, at least a bottom wall portion and a side wall portion rising from an end portion of the bottom wall portion in a state before the insulated conducting wire is connected, and a bottom wall portion substantially orthogonal to a direction in which the insulated conducting wire is extended, A step of attaching a metal terminal provided with a connecting portion whose cross section with the side wall portion is at least approximately L-shaped to the flange portion, and an insulated conductor extending from the core portion along the L-shaped corner portion of the connecting portion A step of temporarily fixing the insulated conductors arranged at the corners, a step of cutting the temporarily fixed insulated conductors in accordance with the end portions of the connection points, and a step of insulating wires on the connection points. A step of separating the end portion from the connecting portion to form a gap between the insulated conductor and the corner portion, and a step of irradiating a portion of the insulating conducting wire separated from the connecting portion to radiate plasma jet to peel off the insulating coating And.

このような方法によると、絶縁導線の一面側に向かって噴射されたプラズマジェットの一部が金属端子の表面を伝わって絶縁導線の他面側にまで回り込むことができ、裏側の絶縁被覆にもプラズマジェットを照射することができる。   According to such a method, a part of the plasma jet sprayed toward one surface side of the insulated conductor can be transmitted to the other surface side of the insulated conductor along the surface of the metal terminal, and also on the insulation coating on the back side. A plasma jet can be irradiated.

また装着工程において、継線箇所において底壁部から直立する第二側壁部を有し、底壁部と側壁部と第二側壁部とから断面は略コの字を成す金属端子を用いてもよい。   Further, in the mounting process, a metal terminal having a second side wall portion standing upright from the bottom wall portion at the connection point and having a substantially U-shaped cross section from the bottom wall portion, the side wall portion, and the second side wall portion may be used. Good.

このような方法によると、略コの字状の内部にプラズマジェットを溜めて封じ込めることができ、プラズマジェットが金属端子上から離散することを抑制することができる。   According to such a method, it is possible to store and contain the plasma jet inside the substantially U-shape, and to suppress the plasma jet from being dispersed from the metal terminal.

また装着工程において、底壁部における絶縁導線が配置される箇所には凹部が形成されている金属端子を用いてもよい。   Further, in the mounting process, a metal terminal having a recess may be used at a place where the insulated conductor is disposed on the bottom wall.

このような方法によると、仮固定後に絶縁導線と金属端子との間に隙間を形成する工程において、絶縁導線の金属端子から離間させる量を小さくすることができ、かつ絶縁導線の周囲にプラズマジェットが回り込みやすくなる。   According to such a method, in the step of forming a gap between the insulated conductor and the metal terminal after temporary fixing, the amount of the insulated conductor separated from the metal terminal can be reduced, and a plasma jet is formed around the insulated conductor. Becomes easier to wrap around.

また剥離工程において、プラズマジェットは絶縁導線から角部に向かう経路の延長線上に沿って絶縁導線に向かって噴射されてもよい。   Further, in the peeling step, the plasma jet may be jetted toward the insulated conductor along the extended line of the path from the insulated conductor to the corner.

このような方法によると、角部にプラズマジェットが溜まり封じ込められやすくなる。   According to such a method, the plasma jet accumulates at the corner and is easily contained.

本発明のコイル部品の製造方法によれば、継線箇所における絶縁導線の全周に亘って絶縁導線をプラズマジェットにより好適に剥離することができる。   According to the method for manufacturing a coil component of the present invention, the insulated conductor can be suitably peeled off by a plasma jet over the entire circumference of the insulated conductor at the connection point.

本発明の実施の形態によるコイル部品の製造方法について図１から図８を参照しながら説明する。まず図１から図３に基づきコイル部品１及びコイル部品１を構成する部品について説明する。図１に示されるコイル部品１は、差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、ドラムタイプのコア２と、二本の絶縁導線３と、電極である金属端子９、金属端子１０とより構成されている。コア２は、フェライト等の磁性粉体が圧縮、焼結等の過程を経て成形されている。   A method for manufacturing a coil component according to an embodiment of the present invention will be described with reference to FIGS. First, the coil component 1 and components constituting the coil component 1 will be described with reference to FIGS. A coil component 1 shown in FIG. 1 is a common mode filter used for a differential signal interface, and has a dimension of about 4 mm in the longitudinal direction, a drum-type core 2, two insulated conductors 3, It comprises a metal terminal 9 and a metal terminal 10 which are electrodes. The core 2 is formed through a process in which magnetic powder such as ferrite is compressed and sintered.

図２に示すように、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。鍔部４、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する。また、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 core 2 includes a core portion 5 having a substantially rectangular cross section perpendicular to the longitudinal direction, and a pair of flange portions 4, 4 that are provided at both ends in the longitudinal direction of the core portion 5. Composed. Since the flanges 4 and 4 have substantially the same shape, only one side will be described unless otherwise specified. 2, the longitudinal direction of the core part 5 is the x-axis direction, the width direction of the core part 5 is the y-axis direction, and the direction orthogonal to the x-axis direction and the y-axis direction is the z-axis direction. Define and explain.

鍔部４は、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。   The collar portion 4 extends in the opposite direction of the main body portion 6, the main body portion 6 that is connected to the core portion 5, the sub-body portion 7 that extends from the main body portion 6 in the y-axis direction, and the sub-body portion 7. It is comprised from the sub trunk | drum 8 which is taken out. 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 winding 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直方体に形成されている。副胴部７及び副胴部８は、主胴部６のｙ軸方向と直交する両側面より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いる。また、鍔部４は、主胴部６のｚ方向一面と副胴部７及び副胴部８のｚ方向一面とが同一平面となるように構成されている。   The main body portion 6 is formed in a substantially rectangular parallelepiped shape in which the z-axis direction is the longitudinal direction and the y-axis direction is the width direction and has the same width as the core portion 5. The sub barrel portion 7 and the sub barrel portion 8 are formed in a substantially rectangular parallelepiped shape extending in the y axis direction from both side surfaces orthogonal to the y axis direction of the main barrel portion 6 and having the z axis direction as a longitudinal direction. Moreover, the collar part 4 is comprised so that the z direction one surface of the main trunk | drum 6 and the z direction one surface of the sub trunk | drum 7 and the sub trunk | drum 8 may become the same plane.

副胴部７及び副胴部８には、図１に示すように金属端子９及び金属端子１０が装着される。後述の継線処理がなされる前の金属端子９は、基部９Ｂの両端より延出される一対の脚部９Ａ及び脚部９Ｃより略コの字形状に形成されている。この金属端子９は、脚部９Ａ、脚部９Ｃの延出方向がｘ方向となり、基部９Ｂの長辺方向がｚ方向となり、副胴部７のｚ方向と直交する面を脚部９Ａ及び脚部９Ｃで狭持して、副胴部７に装着される。   As shown in FIG. 1, a metal terminal 9 and a metal terminal 10 are attached to the auxiliary body 7 and the auxiliary body 8. The metal terminal 9 before the below-described connecting process is formed in a substantially U-shape from the pair of leg portions 9A and 9C extending from both ends of the base portion 9B. In this metal terminal 9, the extending direction of the leg portion 9A and the leg portion 9C is the x direction, the long side direction of the base portion 9B is the z direction, and the surface perpendicular to the z direction of the sub trunk portion 7 is the leg portion 9A and the leg portion. It is nipped by the part 9 </ b> C and attached to the sub trunk part 7.

脚部９Ａは、絶縁導線３との継線箇所となり、底壁部９Ｄと溶融壁部９Ｅ（側壁部）と仮固定部９Ｆとから主に構成されている。底壁部９Ｄは基部９Ｂと接続され副胴部７を狭持する箇所になっている。溶融壁部９Ｅは、底壁部９Ｄの延出方向側辺であって、基部９Ｂ側となる位置から立ち上がっている。仮固定部９Ｆは、底壁部９Ｄの延出方向側辺であって溶融壁部９Ｅと隣り合うと共に底壁部９Ｄの先端側位置から立ち上がっている。また底壁部９Ｄと溶融壁部９Ｅとは、ｙｚ平面における断面が略Ｌ字状をなすように構成され（図５）、底壁部９Ｄと溶融壁部９Ｅとの間には、断面が略Ｒ状の角部が形成される。   The leg portion 9A serves as a connection point with the insulated conductor 3, and is mainly composed of a bottom wall portion 9D, a molten wall portion 9E (side wall portion), and a temporary fixing portion 9F. The bottom wall portion 9D is connected to the base portion 9B and serves as a portion that holds the auxiliary body portion 7 therebetween. The molten wall portion 9E rises from a position on the side in the extending direction of the bottom wall portion 9D and on the base portion 9B side. The temporary fixing portion 9F is on the side in the extending direction of the bottom wall portion 9D, is adjacent to the melting wall portion 9E, and rises from the tip side position of the bottom wall portion 9D. Further, the bottom wall portion 9D and the molten wall portion 9E are configured such that a cross section in the yz plane is substantially L-shaped (FIG. 5), and the cross section is between the bottom wall portion 9D and the molten wall portion 9E. A substantially R-shaped corner is formed.

脚部９Ｃはコイル部品１を図示せぬ基板に実装する際に、基板上の電極と電気的に接合される実装箇所となる。また金属端子９と金属端子１０とは、それぞれ副胴部７と副胴部８とに取り付けられた状態で、ｚｘ平面を挟んで鏡面形状となっている。故に継線加工がなされる前の金属端子１０も基部１０Ｂの両端より延出される一対の脚部１０Ａ及び脚部１０Ｃより略コの字形状に形成され、脚部１０Ａには底壁部１０Ｄ、仮固定部１０Ｆ、及び溶融壁部１０Ｅが設けられている。金属端子９が副胴部７に装着されるのと同様に金属端子１０も副胴部８に装着される。   The leg portion 9C is a mounting portion that is electrically joined to the electrode on the substrate when the coil component 1 is mounted on the substrate (not shown). In addition, the metal terminal 9 and the metal terminal 10 are attached to the sub barrel portion 7 and the sub barrel portion 8, respectively, and have a mirror shape with the zx plane interposed therebetween. Therefore, the metal terminal 10 before being subjected to the connecting process is also formed in a substantially U shape from the pair of leg portions 10A and 10C extending from both ends of the base portion 10B, and the leg portion 10A has a bottom wall portion 10D, A temporary fixing part 10F and a melting wall part 10E are provided. The metal terminal 10 is mounted on the sub barrel 8 in the same manner that the metal terminal 9 is mounted on the sub barrel 7.

巻芯部５に巻回される二本の絶縁導線３は、図３に示されるように、それぞれ銅線である芯線３Ａとポリアミドイミドからなる絶縁被覆３Ｂとより構成される。絶縁導線３は、外径が約９０μｍ、芯線径が約７０μｍである。この絶縁導線３の両端部には継線箇所３Ｃが規定されており、この継線箇所３Ｃが後述の剥離箇所となる。   As shown in FIG. 3, the two insulated conductors 3 wound around the core portion 5 are each composed of a core wire 3 </ b> A that is a copper wire and an insulating coating 3 </ b> B made of polyamideimide. The insulated conductor 3 has an outer diameter of about 90 μm and a core wire diameter of about 70 μm. A connecting point 3C is defined at both ends of the insulated conducting wire 3, and the connecting point 3C becomes a peeling point described later.

以下、上記構成の金属端子９及び金属端子１０に絶縁導線３を継線する工程について説明する。金属端子１０に係る工程は、金属端子９に係る工程と同じ工程を採るため、言及しない限り説明を省略する。先ず、図２に示されるように、溶融壁部９Ｅ及び底壁部９Ｄ等が形成された状態で、金属端子９を鍔部４に装着する。   Hereinafter, the process of connecting the insulated conductor 3 to the metal terminal 9 and the metal terminal 10 having the above-described configuration will be described. Since the process concerning the metal terminal 10 takes the same process as the process concerning the metal terminal 9, description is abbreviate | omitted unless it mentions. First, as shown in FIG. 2, the metal terminal 9 is attached to the flange portion 4 in a state where the molten wall portion 9E, the bottom wall portion 9D, and the like are formed.

金属端子９が装着された後に、図３に示されるように、巻芯部５（図２）に巻回された絶縁導線３の端部を底壁部９Ｄに、底壁部９Ｄと溶融壁部９Ｅとの間の角部に沿って配置する。   After the metal terminal 9 is mounted, as shown in FIG. 3, the end of the insulated wire 3 wound around the core 5 (FIG. 2) is used as the bottom wall 9D, the bottom wall 9D and the molten wall. It arrange | positions along the corner | angular part between the parts 9E.

絶縁導線３の端部を配置した後に、図４に示されるように、仮固定部９Ｆを折り曲げて底壁部９Ｄ上で絶縁導線３を仮固定し、底壁部９Ｄの基部９Ｂ側端部で絶縁導線３を切断する。そして、底壁部９Ｄ上の絶縁導線３の端部を折り曲げて底壁部９Ｄから離間させる。これにより、図４及び図５に示されるように、底壁部９Ｄ及び溶融壁部９Ｅの間の角部と絶縁導線３との間に隙間を形成することができる。   After the end portion of the insulated conducting wire 3 is disposed, as shown in FIG. 4, the temporarily fixing portion 9F is bent to temporarily fix the insulated conducting wire 3 on the bottom wall portion 9D, and the end portion on the base 9B side of the bottom wall portion 9D. The insulated conducting wire 3 is cut by. And the edge part of the insulated conducting wire 3 on bottom wall part 9D is bend | folded, and it spaces apart from bottom wall part 9D. Thereby, as FIG.4 and FIG.5 shows, a clearance gap can be formed between the corner | angular part between bottom wall part 9D and the fusion | melting wall part 9E, and the insulated conducting wire 3. FIG.

絶縁導線３を折り曲げて隙間を形成した後に、プラズマジェットノズルＰにより、プラズマジェットを絶縁導線３の継線箇所３Ｃに向けて照射する。このプラズマジェットノズルＰは、ＨｅとＯ２との混合ガスを噴射する針に、約１４ＭＨｚの高周波を印加してプラズマジェットを生成・照射している。プラズマジェットノズルＰから照射されるプラズマジェットは、絶縁導線３から上述の角部に向かう経路の延長線上に沿って絶縁導線３に向かって噴射される。これにより、照射されたプラズマジェットが絶縁導線３の表側（プラズマジェットノズルＰ側）に吹き付けられる。また照射されたプラズマジェットの一部は、金属端子９の表面を伝わって絶縁導線３の裏側にまで回り込むと共に、上述の角部に留まり封じ込められる。よって絶縁導線３の裏側（反プラズマジェットノズルＰ側）にもプラズマジェットが照射されることになり、一方向からプラズマジェットの照射することにより、全周に亘ってプラズマジェットが吹き付けられることになる。絶縁被覆３Ｂは、プラズマジェットが吹き付けられることにより化学的に分解されて剥離されるため、絶縁導線３は、図６に示されるように、プラズマジェットの照射箇所の全周に亘って絶縁被覆３Ｂが剥離される。この時に、絶縁被覆３Ｂが化学的に分解されて剥離されているため、芯線３Ａ部分に傷が入ることが抑制されている。以上から絶縁被覆３Ｂを剥離する工程が終了する。 After the insulated conductor 3 is bent to form a gap, the plasma jet nozzle P irradiates the plasma jet toward the connecting portion 3 </ b> C of the insulated conductor 3. The plasma jet nozzle P generates and irradiates a plasma jet by applying a high frequency of about 14 MHz to a needle for injecting a mixed gas of He and O 2 . The plasma jet irradiated from the plasma jet nozzle P is jetted toward the insulated conductor 3 along the extended line of the path from the insulated conductor 3 toward the above-mentioned corner. Thereby, the irradiated plasma jet is sprayed on the front side (plasma jet nozzle P side) of the insulated conducting wire 3. Further, a part of the irradiated plasma jet travels through the surface of the metal terminal 9 to the back side of the insulated conductor 3 and stays at the corner and is contained. Therefore, the plasma jet is also irradiated to the back side (anti-plasma jet nozzle P side) of the insulated conducting wire 3, and the plasma jet is blown over the entire circumference by irradiating the plasma jet from one direction. . Since the insulating coating 3B is chemically decomposed and peeled off when the plasma jet is blown, the insulating conductive wire 3 is insulated over the entire circumference of the plasma jet irradiation portion as shown in FIG. Is peeled off. At this time, since the insulating coating 3B is chemically decomposed and peeled off, it is possible to prevent the core wire 3A from being damaged. From the above, the process of peeling off the insulating coating 3B is completed.

被覆剥離工程が終了した後に、金属端子９、金属端子１０が装着されたコア２は、図示せぬレーザ溶接機へと移送されて継線箇所３Ｃが継線される。継線工程において、図７に示されるように、先ず溶融壁部９Ｅを折り曲げて、溶融壁部９Ｅと底壁部９Ｄとの間に芯線３Ａを狭持する。その後溶融壁部９Ｅに溶接用レーザ光が照射され、図８に示されるように、溶融壁部９Ｅ、芯線３Ａ及び底壁部９Ｄが一体に溶接され、継線工程が完了し、コイル部品１（図１）が完成する。   After the coating peeling process is completed, the core 2 to which the metal terminal 9 and the metal terminal 10 are attached is transferred to a laser welding machine (not shown), and the connecting portion 3C is connected. In the connecting step, as shown in FIG. 7, the melting wall portion 9E is first bent, and the core wire 3A is held between the melting wall portion 9E and the bottom wall portion 9D. Thereafter, the welding wall 9E is irradiated with welding laser light, and as shown in FIG. 8, the melting wall 9E, the core wire 3A, and the bottom wall 9D are integrally welded, and the connecting process is completed. (FIG. 1) is completed.

本発明のコイル部品の製造方法は、上述した実施の形態に限定されず、特許請求の範囲の範囲内で種々の変更や改良が可能である。例えば図９に示されるように、溶融壁部９Ｅの絶縁導線３を挟んで反対側の底壁部９Ｄの側縁から、第二壁部９Ｇを立ち上げてもよい。このような構成によると、溶融壁部９Ｅと底壁部９Ｄと第二壁部９Ｇとから画成される略コの字状の内部に向かってプラズマジェットを照射することにより、内部にプラズマジェットを溜めて封じ込めることができ、プラズマジェットが金属端子９上から離散することを抑制することができる。特に略コの字状とすることにより、上述の角部に向かってプラズマジェットを照射する必要が無くなり、プラズマジェットを噴射する方向の自由度を増すことができる。   The method for manufacturing a coil component of the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made within the scope of the claims. For example, as shown in FIG. 9, the second wall portion 9G may be raised from the side edge of the opposite bottom wall portion 9D across the insulated conductor 3 of the molten wall portion 9E. According to such a configuration, by irradiating the plasma jet toward the substantially U-shaped interior defined by the molten wall portion 9E, the bottom wall portion 9D, and the second wall portion 9G, Can be stored and contained, and the plasma jet can be prevented from being scattered from the metal terminal 9. In particular, the substantially U-shaped configuration eliminates the need to irradiate the plasma jet toward the above-described corner portion, and can increase the degree of freedom in the direction of jetting the plasma jet.

また図１０に示されるように、底壁部９Ｄにおいて、絶縁導線３が配置される箇所に凹部９ａを形成しても良い。このような構成によると、絶縁導線３の仮固定後に絶縁導線３と底壁部９Ｄとの間に隙間を形成する工程において、絶縁導線３の底壁部９Ｄから離間させる量を小さくすることができ、かつ離間させる量が小さい状態でも絶縁導線３の周囲にプラズマジェットが回り込みやすくなる。従って、底壁部９Ｄから絶縁導線３が離間している量が小さいため、絶縁被覆３Ｂを剥離する工程が終了した後に溶融壁部９Ｅを折り曲げる際に、容易に溶融壁部９Ｅと底壁部９Ｄとの間に芯線３Ａを挟むことができる。   In addition, as shown in FIG. 10, a recess 9 a may be formed in the bottom wall portion 9 </ b> D at a location where the insulated conductor 3 is disposed. According to such a configuration, in the step of forming a gap between the insulated conducting wire 3 and the bottom wall portion 9D after the insulated conducting wire 3 is temporarily fixed, the amount of the insulated conducting wire 3 that is separated from the bottom wall portion 9D can be reduced. Even if the amount of separation is small, the plasma jet easily goes around the insulated conductor 3. Accordingly, since the amount of the insulated conductor 3 that is separated from the bottom wall portion 9D is small, the molten wall portion 9E and the bottom wall portion can be easily bent when the molten wall portion 9E is bent after the step of peeling the insulating coating 3B is completed. The core wire 3A can be sandwiched between 9D.

本発明の実施の形態に係るコイル部品の平面図。The top view of the coil components which concern on embodiment of this invention. 本発明の実施の形態に係るコイル部品の製造前の状態を示した分解斜視図。The disassembled perspective view which showed the state before manufacture of the coil components which concern on embodiment of this invention. 本発明の実施の形態に係るコイル部品の金属端子に絶縁導線を配置した状態の部分斜視図。The fragmentary perspective view of the state which has arrange | positioned the insulated lead wire to the metal terminal of the coil components which concern on embodiment of this invention. 本発明の実施の形態に係るコイル部品の金属端子に絶縁導線を仮固定し絶縁導線を金属端子から離間させた状態の部分斜視図。The fragmentary perspective view of the state where the insulated lead was temporarily fixed to the metal terminal of the coil component concerning an embodiment of the invention, and the insulated lead was separated from the metal terminal. 本発明の実施の形態に係るコイル部品の絶縁導線にプラズマジェットを照射している状態のｙｚ平面による断面図。Sectional drawing by the yz plane of the state which irradiates the plasma jet to the insulated wire of the coil components which concern on embodiment of this invention. 本発明の実施の形態に係るコイル部品の絶縁導線から被覆を剥離した状態の部分斜視図。The fragmentary perspective view of the state which peeled the coating | coated from the insulated wire of the coil components which concern on embodiment of this invention. 本発明の実施の形態に係るコイル部品の絶縁導線の芯線を溶融壁部で狭持した状態の部分斜視図。The fragmentary perspective view of the state which pinched the core wire of the insulated lead of the coil component which concerns on embodiment of this invention with the fusion | melting wall part. 本発明の実施の形態に係るコイル部品の金属端子に絶縁導線を継線した状態の部分斜視図。The fragmentary perspective view of the state which connected the insulated conducting wire to the metal terminal of the coil components which concern on embodiment of this invention. 本発明の実施の形態に係るコイル部品の金属端子の変形例であって第二側壁部を備えた状態のｙｚ平面による断面図。Sectional drawing by the yz plane of the state provided with the 2nd side wall part which is a modification of the metal terminal of the coil components which concern on embodiment of this invention. 本発明の実施の形態に係るコイル部品の金属端子の変形例であって凹部が形成された状態のｙｚ平面による断面図。Sectional drawing by the yz plane of the state by which it is a modification of the metal terminal of the coil components which concern on embodiment of this invention, and the recessed part was formed.

符号の説明Explanation of symbols

１・・コイル部品 ２・・コア ３・・絶縁導線 ３Ａ・・芯線 ３Ｂ・・絶縁被覆
３Ｃ・・継線箇所 ４・・鍔部 ５・・巻芯部 ６・・主胴部 ７、８・・副胴部
９・・金属端子 ９Ａ・・脚部 ９Ｂ・・基部 ９Ｃ・・脚部 ９Ｄ・・底壁部
９Ｅ・・溶融壁部 ９Ｅ・・溶融壁部 ９Ｆ・・仮固定部 ９Ｇ・・第二壁部
９ａ・・凹部 １０・・金属端子 １０Ａ・・脚部 １０Ｂ・・基部 １０Ｃ・・脚部
１０Ｄ・・底壁部 １０Ｅ・・溶融壁部 １０Ｆ・・仮固定部
Ｐ・・プラズマジェットノズル 1. ・ Coil parts 2. ・ Core 3. ・ Insulated lead wire 3A ・ ・ Core wire 3B ・ ・ Insulation coating 3C ・ ・ Connection point 4. ・ Hut part 5. ・ Core part 6. ・ Main body part 7,8 ・・ Sub trunk 9 ・ ・ Metal terminal 9A ・ ・ Leg 9B ・ ・ Base 9C ・ ・ Leg 9D ・ ・ Bottom wall 9E ・ ・ Melting wall 9E ・ ・ Melting wall 9F ・ ・ Temporary fixing part 9G ・ ・Second wall portion 9a ··· Recess portion 10 · · Metal terminal 10A · · Leg portion 10B · · Base portion 10C · · Leg portion 10D · · Bottom wall portion 10E · · Molten wall portion 10F · · Temporary fixing portion
P ・ ・ Plasma Jet Nozzle

Claims (4)

芯部と該芯部の両端に設けられた一対の鍔部とから構成されるコアと、一対の該鍔部にそれぞれ設けられた金属端子と、該芯部に沿って配置され芯線と該芯線を覆う絶縁被覆とを有する絶縁導線と、を備え、該金属端子は該絶縁導線が継線される継線箇所を有するコイル部品の製造方法であって、
該絶縁導線が継線される前の状態で底壁部と該底壁部の端部から立ち上がる側壁部とを少なくとも有すると共に、該絶縁導線が延出される方向と略直交する該底壁部と該側壁部との断面が少なくとも略Ｌ字を成す該継線箇所を備えた該金属端子を該鍔部に装着する工程と、
該芯部から延出された該絶縁導線を該継線箇所の該Ｌ字の角部に沿って配置する工程と、
該角部に配置された該絶縁導線を仮固定する工程と、
仮固定された該絶縁導線を継線箇所の端部に合わせて切断する工程と、
該継線箇所上の該絶縁導線の端部を該継線箇所から離間させ該絶縁導線と該角部との間に隙間を形成する工程と、
該絶縁導線の該継線箇所から離間している部分にプラズマジェットを照射して該絶縁被覆を剥離する工程と、を備えることを特徴とするコイル部品の製造方法。 A core composed of a core part and a pair of flange parts provided at both ends of the core part, a metal terminal provided on each of the pair of collar parts, and a core wire and the core wire arranged along the core part An insulating conductor having an insulating coating covering the metal terminal, and the metal terminal is a method of manufacturing a coil component having a connection point where the insulating conductor is connected,
The bottom wall portion having at least a bottom wall portion and a side wall portion rising from an end portion of the bottom wall portion in a state before the insulated conductor wire is connected, and the bottom wall portion substantially orthogonal to a direction in which the insulated conductor wire extends. Attaching the metal terminal provided with the connecting portion where the cross section with the side wall portion is substantially L-shaped to the flange portion;
Disposing the insulated conducting wire extending from the core portion along the L-shaped corner of the connecting portion;
Temporarily fixing the insulated conductors arranged at the corners;
Cutting the temporarily fixed insulated conductor wire according to the end of the connection point; and
A step of separating the end of the insulated conductor on the connection location from the connection location and forming a gap between the insulated lead and the corner; and
Irradiating a plasma jet to a portion of the insulated conducting wire that is separated from the connecting portion and peeling off the insulating coating. 該装着工程において、該継線箇所において該底壁部から直立する第二側壁部を有し、該底壁部と該側壁部と該第二側壁部とから該断面は略コの字を成す金属端子を用いることを特徴とする請求項１に記載のコイル部品の製造方法。   In the mounting step, the connecting portion has a second side wall portion standing upright from the bottom wall portion, and the cross section is substantially U-shaped from the bottom wall portion, the side wall portion, and the second side wall portion. The method of manufacturing a coil component according to claim 1, wherein a metal terminal is used. 該装着工程において、該底壁部における該絶縁導線が配置される箇所には凹部が形成されている金属端子を用いることを特徴とする請求項１または請求項２のいずれかに記載のコイル部品の製造方法。   3. The coil component according to claim 1, wherein in the mounting step, a metal terminal having a concave portion is used at a location where the insulated conductor is disposed on the bottom wall portion. Manufacturing method. 該剥離工程において、該プラズマジェットは該絶縁導線から該角部に向かう経路の延長線上に沿って該絶縁導線に向かって噴射されることを特徴とする請求項１から請求項３のいずれか一に記載のコイル部品の製造方法。   4. The plasma jet according to claim 1, wherein the plasma jet is jetted toward the insulated conductor along an extended line of a path from the insulated conductor to the corner portion. The manufacturing method of the coil components as described in 2.
JP2007200426A 2007-08-01 2007-08-01 Manufacturing method of coil component Withdrawn JP2009038173A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016134590A (en) * 2015-01-22 2016-07-25 Tdk株式会社 Coil device
US10170234B2 (en) 2015-01-22 2019-01-01 Tdk Corporation Coil device capable of performing a wire connection
CN110651341A (en) * 2017-05-12 2020-01-03 摩达伊诺琴股份有限公司 Choke coil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016134590A (en) * 2015-01-22 2016-07-25 Tdk株式会社 Coil device
US10170234B2 (en) 2015-01-22 2019-01-01 Tdk Corporation Coil device capable of performing a wire connection
CN110651341A (en) * 2017-05-12 2020-01-03 摩达伊诺琴股份有限公司 Choke coil
EP3624151A4 (en) * 2017-05-12 2021-01-20 Moda-Innochips Co., Ltd. Choke coil

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