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JP6065122B2 - Wound-type electronic component and method for manufacturing wound-type electronic component - Google Patents

Wound-type electronic component and method for manufacturing wound-type electronic component Download PDF

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Publication number
JP6065122B2
JP6065122B2 JP2015539126A JP2015539126A JP6065122B2 JP 6065122 B2 JP6065122 B2 JP 6065122B2 JP 2015539126 A JP2015539126 A JP 2015539126A JP 2015539126 A JP2015539126 A JP 2015539126A JP 6065122 B2 JP6065122 B2 JP 6065122B2
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winding
core
terminal
electronic component
welded
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JPWO2015045955A1 (en
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謙一郎 牧
謙一郎 牧
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Murata Manufacturing Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F27/292—Surface mounted devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/10—Connecting leads to windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F2017/0093—Common mode choke coil

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Description

本発明は、巻線型電子部品及び巻線型電子部品の製造方法に関し、詳しくは、巻線型電子部品の巻線と金属端子の接続に関する。   The present invention relates to a wire-wound electronic component and a method for manufacturing the wire-wound electronic component, and more particularly, to a connection between a wire of the wire-wound electronic component and a metal terminal.

従来の巻線型電子部品として、特許文献１に記載のコイル部品が知られている。この種の巻線型電子部品は、巻芯部及び該巻芯部の両端に設けられた鍔部を含むコア、該鍔部に設けられた金属端子、及び巻芯部に巻き回された巻線を備えている。   As a conventional wound electronic component, a coil component described in Patent Document 1 is known. This type of wire-wound electronic component includes a core part, a core including flanges provided at both ends of the core part, a metal terminal provided on the flange part, and a winding wound around the core part. It has.

ところで、上記の巻線型電子部品における金属端子と巻線との接続は、巻線を挟み込むように金属端子を折り曲げ、その後、金属端子と巻線とを溶接することによって行われる。しかし、巻線を挟み込むように金属端子を折り曲げても、金属端子のスプリングバックによって、巻線と金属端子との間に隙間が発生するおそれがある。この状態で、金属端子と巻線とを溶接すると、溶接不良が生じる可能性がある。   By the way, the connection between the metal terminal and the winding in the above-described wound electronic component is performed by bending the metal terminal so as to sandwich the winding, and then welding the metal terminal and the winding. However, even if the metal terminal is bent so as to sandwich the winding, there is a possibility that a gap is generated between the winding and the metal terminal due to the springback of the metal terminal. If the metal terminal and the winding are welded in this state, a welding failure may occur.

特許第３９０９８３４号公報Japanese Patent No. 3909834

本発明の目的は、巻線型電子部品における巻線と金属端子との接続における溶接不良が生じにくい巻線型電子部品及びその製造方法を提供することである。   An object of the present invention is to provide a wire-wound electronic component and a method for manufacturing the wire-wound electronic component that are less likely to cause poor welding in the connection between the wire and the metal terminal in the wire-wound electronic component.

本発明の第１の形態に係る巻線型電子部品の製造方法は、
巻芯部及び該巻芯部の両端に設けられた鍔部を含むコア、該鍔部に設けられた金属端子、並びに該巻芯部に巻き回された巻線を有する巻線型電子部品の製造方法であって、
前記金属端子は、前記巻線と溶接される端子側溶接部、及び該端子側溶接部に隣接する端子側隣接部を有し、
前記巻線型電子部品の製造方法は、
前記端子側隣接部に対して、括れを設ける加工を施す括れ加工工程と、
前記括れ加工工程後に、前記巻芯部から前記巻線を引き出した部分を前記巻芯部から前記巻線の先端に向かう方向に前記端子側隣接部及び前記端子側溶接部の順にこれらの上に配置して、前記端子側隣接部の少なくとも一部及び前記端子側溶接部と前記巻線とを熱圧着する熱圧着工程と、
熱圧着された前記金属端子と前記巻線とを溶接する溶接工程と、
を備えること、
を特徴とする。
A method for manufacturing a wire wound electronic component according to the first aspect of the present invention includes:
Manufacture of a winding-type electronic component having a core including a core, a core including flanges provided at both ends of the core, a metal terminal provided on the flange, and a winding wound around the core A method,
The metal terminal has a terminal side welded portion welded to the winding, and a terminal side adjacent portion adjacent to the terminal side welded portion,
The method of manufacturing the wound electronic component is as follows:
For the terminal side adjacent portion, a constricting process step for performing constriction processing,
After the constriction processing step, the portion where the winding is drawn out from the core portion is placed in the order of the terminal side adjacent portion and the terminal side welded portion in the direction from the core portion toward the tip of the winding. Arranging and thermocompression bonding the thermocompression bonding of at least a part of the terminal side adjacent portion and the terminal side welding portion and the winding;
A welding step of welding the metal terminal and the winding that are thermocompression bonded;
Providing
It is characterized by.

本発明の第２の形態に係る巻線型電子部品は、
巻芯部及び該巻芯部の両端に設けられた鍔部を有するコアと、
前記鍔部に設けられた金属端子と、
前記巻芯部に巻き回され、かつ、前記金属端子と溶接される巻線側溶接部、及び該巻線側溶接部と隣接する巻線側隣接部を有する巻線と、
を備え、
前記巻線側隣接部における前記巻線の進行方向に直交する断面の断面形状は、該巻線の前記巻芯部上に位置する部分における該巻線の進行方向に直交する断面の断面形状と比べ、より扁平であり、
前記巻線側隣接部は、前記金属端子に固定されていること、
を特徴とする。 The wound electronic component according to the second aspect of the present invention is
A core having a core part and flanges provided at both ends of the core part;
A metal terminal provided on the collar,
A winding having a winding side welding portion wound around the winding core portion and welded to the metal terminal, and a winding side adjacent portion adjacent to the winding side welding portion;
With
The cross-sectional shape of the cross section orthogonal to the traveling direction of the winding in the winding-side adjacent portion is the cross-sectional shape of the cross section orthogonal to the traveling direction of the winding in the portion located on the core portion of the winding. compared, Ri flatter der,
The winding side adjacent portion is fixed to the metal terminal;
It is characterized by.

前記製造方法では、巻線と金属端子とを溶接により接続する前に、熱圧着を行う。これにより、巻線と金属端子とが密着した状態で、溶接が行われる。従って、前記製造方法では、溶接不良が生じにくい。   In the manufacturing method, thermocompression bonding is performed before the winding and the metal terminal are connected by welding. Thereby, welding is performed in a state where the winding and the metal terminal are in close contact with each other. Therefore, in the manufacturing method, poor welding hardly occurs.

本発明によれば、巻線型電子部品における巻線と金属端子との接続における溶接不良が生じにくい。   According to the present invention, poor welding in connection between a winding and a metal terminal in a wound electronic component is unlikely to occur.

一実施例である巻線型電子部品の外観図である。It is an external view of the winding type electronic component which is one Example. 一実施例である巻線型電子部品の一方の鍔部周辺を拡大した図である。It is the figure which expanded one collar part periphery of the winding type | mold electronic component which is one Example. 一実施例である巻線型電子部品の他方の鍔部周辺を拡大した図である。It is the figure which expanded the other collar part periphery of the winding type | mold electronic component which is one Example. 製造中の巻線型電子部品をあらわした図である。It is a figure showing the winding type electronic parts under manufacture. 製造中の巻線型電子部品における巻線と金属端子との接続過程において、金属端子に巻線を置いた状態をあらわした図である。It is the figure which showed the state which set | placed the coil | winding on the metal terminal in the connection process of the coil | winding and metal terminal in the winding type electronic component under manufacture. 製造中の巻線型電子部品における巻線と金属端子との接続過程において、巻線側からヒーターチップを押し当て、巻線と金属端子とを熱圧着させようとしている状態をあらわした図である。It is the figure which showed the state which is pressing the heater chip | tip from the coil | winding side in the connection process of the coil | winding and metal terminal in the winding type electronic component under manufacture, and is trying to thermocompression-bond a coil | winding and a metal terminal. 製造中の巻線型電子部品における巻線と金属端子との接続過程において、熱圧着後の状態をあらわした図である。It is the figure which showed the state after thermocompression bonding in the connection process of the coil | winding and metal terminal in the winding type electronic component in manufacture. 図７のＡ−Ａ断面における断面図である。It is sectional drawing in the AA cross section of FIG.

（巻線型電子部品の構成、図１参照）
一実施例に係る巻線型電子部品１について図面を参照しながら説明する。以下で、巻芯部１４が延びている方向をｘ軸方向と定義する。また、ｘ軸方向から平面視したとき、鍔部１６の長辺に沿った方向をｙ軸方向と定義し、鍔部１６の短辺に沿った方向をｚ軸方向と定義する。なお、ｘ軸、ｙ軸及びｚ軸は互いに直交している。(Configuration of wire wound electronic components, see Fig. 1)
A wound electronic component 1 according to an embodiment will be described with reference to the drawings. Hereinafter, the direction in which the core portion 14 extends is defined as the x-axis direction. Further, when viewed in plan from the x-axis direction, the direction along the long side of the flange 16 is defined as the y-axis direction, and the direction along the short side of the flange 16 is defined as the z-axis direction. Note that the x-axis, y-axis, and z-axis are orthogonal to each other.

巻線型電子部品１は、図１に示すように、コア１２、巻線２０，２１及び金属端子２２〜２５を備えている。   As shown in FIG. 1, the wound electronic component 1 includes a core 12, windings 20 and 21, and metal terminals 22 to 25.

コア１２は、例えばフェライト、アルミナ等の磁性材料により構成され、巻芯部１４及び鍔部１６，１８を含んでいる。   The core 12 is made of a magnetic material such as ferrite or alumina, and includes a winding core portion 14 and flange portions 16 and 18.

巻芯部１４は、ｘ軸方向に延びている四角柱状の部材である。ただし、巻芯部１４は、四角柱状に限らず、円柱状や多角柱状であってもよい。   The winding core portion 14 is a quadrangular columnar member extending in the x-axis direction. However, the core part 14 is not limited to a quadrangular prism shape, and may be a cylindrical shape or a polygonal prism shape.

鍔部１６は、巻芯部１４のｘ軸方向の負方向側の一端に設けられている。   The collar portion 16 is provided at one end of the winding core portion 14 on the negative direction side in the x-axis direction.

ところで、鍔部１６におけるｘ軸方向の負方向側の面Ｓ１には、図２に示すように、段差が設けられている。これにより、鍔部１６の形状は、ｙ軸方向から見たときに、ｚ軸方向の負方向側を底部とするＬ字型を成している。   Incidentally, a step is provided on the negative surface S1 of the flange portion 16 in the x-axis direction, as shown in FIG. Thereby, when the shape of the collar part 16 is seen from the y-axis direction, it has comprised the L shape which makes the negative direction side of az-axis direction a bottom part.

鍔部１８は、巻芯部１４のｘ軸方向の正方向側の他端に設けられている。また、鍔部１８におけるｘ軸方向の正方向側の面Ｓ２には、図３に示すように、段差が設けられている。これにより、鍔部１８の形状は、ｙ軸方向から見たときに、ｚ軸方向の負方向側を底部とするＬ字型を成している。なお、鍔部１６，１８は、巻芯部１４のｘ軸方向の中心を通り、ｙ軸及びｚ軸と平行な平面に関して対称である。   The flange portion 18 is provided at the other end of the winding core portion 14 on the positive direction side in the x-axis direction. Further, as shown in FIG. 3, a step is provided on the surface S <b> 2 on the positive side in the x-axis direction of the flange portion 18. Thereby, when the shape of the collar part 18 is seen from the y-axis direction, it has comprised the L shape which makes the negative direction side of az-axis direction a bottom part. Note that the flange portions 16 and 18 pass through the center of the core portion 14 in the x-axis direction, and are symmetric with respect to a plane parallel to the y-axis and the z-axis.

金属端子２２〜２５は、リン青銅、真鍮等を材料とする板金を折り曲げることにより形成されており、鍔部１６，１８に設けられている。具体的には、金属端子２２は、図１に示すように、鍔部１６の面Ｓ１とｙ軸方向の正方向側の面とｚ軸方向の正方向側の面Ｓ３とが成す角Ｅ１の近傍に設けられている。また、金属端子２３は、鍔部１６の面Ｓ１とｙ軸方向の負方向側の面と面Ｓ３とが成す角Ｅ２の近傍に設けられている。さらに、金属端子２４は、鍔部１８の面Ｓ２とｙ軸方向の正方向側の面とｚ軸方向の正方向側の面Ｓ４とが成す角Ｅ３の近傍に設けられている。そして、金属端子２５は、鍔部１８の面Ｓ２とｙ軸方向の負方向側の面と面Ｓ４とが成す角Ｅ４の近傍に設けられている。   The metal terminals 22 to 25 are formed by bending a sheet metal made of phosphor bronze, brass or the like, and are provided on the flange portions 16 and 18. Specifically, as shown in FIG. 1, the metal terminal 22 has an angle E <b> 1 formed by the surface S <b> 1 of the flange portion 16, the positive-side surface in the y-axis direction, and the positive-side surface S <b> 3 in the z-axis direction. It is provided in the vicinity. In addition, the metal terminal 23 is provided in the vicinity of an angle E2 formed by the surface S1 of the flange portion 16, the surface on the negative direction side in the y-axis direction, and the surface S3. Further, the metal terminal 24 is provided in the vicinity of an angle E3 formed by the surface S2 of the flange portion 18, the surface on the positive direction side in the y-axis direction, and the surface S4 on the positive direction side in the z-axis direction. And the metal terminal 25 is provided in the vicinity of the angle | corner E4 which the surface S2 of the collar part 18, the surface of the negative direction side of a y-axis direction, and surface S4 comprise.

金属端子２２は、図２に示すように、実装基板のランドと接触する接触部３０、巻線２０と接続される接続部３１及び鍔部１６に接着された接着部３２により構成されている。接触部３０は、帯状の形状を成し、鍔部１６からｚ軸方向の正方向側に向かって突出している部分である。また、接触部３０のｚ軸方向の正方向側の端部は、ｘ軸及びｙ軸と平行な平面を形成しており、該平面が、実装基板のランドと接触する。   As shown in FIG. 2, the metal terminal 22 includes a contact portion 30 that contacts the land of the mounting substrate, a connection portion 31 that is connected to the winding 20, and an adhesive portion 32 that is bonded to the flange portion 16. The contact part 30 is a part which has a belt-like shape and protrudes from the flange part 16 toward the positive side in the z-axis direction. Further, the positive end portion of the contact portion 30 in the z-axis direction forms a plane parallel to the x-axis and the y-axis, and the plane contacts the land of the mounting substrate.

接続部３１は、帯状の形状を成しており、ｘ軸に平行な部分Ｐ１とｙ軸に平行な部分Ｐ２とが組み合わされることによって、略Ｌ字型の形状を成している。ｙ軸に平行な部分Ｐ２は、鍔部１６の面Ｓ３に接着されており、該部分Ｐ２におけるｙ軸方向の正方向側の端部は、ｘ軸に平行な部分Ｐ１と接続されている。なお、ｘ軸に平行な部分Ｐ１は、鍔部１６よりも、ｙ軸方向の正方向側にはみ出している。   The connecting portion 31 has a belt-like shape, and has a substantially L shape by combining a portion P1 parallel to the x axis and a portion P2 parallel to the y axis. The portion P2 parallel to the y-axis is bonded to the surface S3 of the flange portion 16, and the end of the portion P2 on the positive side in the y-axis direction is connected to the portion P1 parallel to the x-axis. Note that the portion P1 parallel to the x-axis protrudes beyond the flange 16 toward the positive side in the y-axis direction.

接続部３１のｘ軸に平行な部分Ｐ１の略中央には、括れＮ１が設けられている。そして、該部分Ｐ１における括れＮ１よりもｘ軸方向の負方向側の部分は、巻線２０と金属端子２２とが接続される際に、溶接される溶接部３１ａ（端子側溶接部）である。ここで、ｘ軸に平行な部分Ｐ１における溶接部３１ａ以外の部分を隣接部３１ｂ（端子側隣接部）と称す。   A constricted N1 is provided in the approximate center of the portion P1 parallel to the x-axis of the connecting portion 31. A portion on the negative side in the x-axis direction from the constriction N1 in the portion P1 is a welded portion 31a (terminal-side welded portion) that is welded when the winding 20 and the metal terminal 22 are connected. . Here, a portion other than the welded portion 31a in the portion P1 parallel to the x-axis is referred to as an adjacent portion 31b (terminal side adjacent portion).

接着部３２は、接触部３０のｚ軸方向の負方向側の端部と接続部３１のｙ軸に平行な部分Ｐ２とを接続しつつ、鍔部１６の面Ｓ１に接着されている。   The bonding portion 32 is bonded to the surface S1 of the flange portion 16 while connecting the end portion on the negative side in the z-axis direction of the contact portion 30 and the portion P2 parallel to the y-axis of the connection portion 31.

金属端子２３は、図２に示すように、実装基板のランドと接触する接触部４０、巻線２１と接続される接続部４１及び鍔部１６に接着された接着部４２により構成されている。接触部４０は、帯状の形状を成し、鍔部１６からｚ軸方向の正方向側に向かって突出している部分である。また、接触部４０のｚ軸方向の正方向側の端部は、ｘ軸及びｙ軸と平行な平面を形成しており、該平面が、実装基板のランドと接触する。   As shown in FIG. 2, the metal terminal 23 includes a contact portion 40 that contacts the land of the mounting substrate, a connection portion 41 that is connected to the winding 21, and an adhesive portion 42 that is bonded to the flange portion 16. The contact part 40 is a part which has a belt-like shape and protrudes from the flange part 16 toward the positive direction side in the z-axis direction. Further, the positive end portion of the contact portion 40 in the z-axis direction forms a plane parallel to the x-axis and the y-axis, and the plane is in contact with the land of the mounting board.

接続部４１は、帯状の形状を成しており、ｘ軸に平行な部分Ｐ３とｙ軸に平行な部分Ｐ４とが組み合わされることによって、略Ｌ字型の形状を成している。ｙ軸に平行な部分Ｐ４は、鍔部１６の面Ｓ３に接着されており、該部分Ｐ４におけるｙ軸方向の負方向側の端部は、ｘ軸に平行な部分Ｐ３と接続されている。なお、ｘ軸に平行な部分Ｐ３は、鍔部１６よりも、ｙ軸方向の負方向側にはみ出している。   The connecting portion 41 has a belt-like shape, and has a substantially L-shape by combining a portion P3 parallel to the x axis and a portion P4 parallel to the y axis. The portion P4 parallel to the y-axis is bonded to the surface S3 of the flange portion 16, and the end of the portion P4 on the negative side in the y-axis direction is connected to the portion P3 parallel to the x-axis. Note that the portion P3 parallel to the x-axis protrudes beyond the flange 16 toward the negative direction side in the y-axis direction.

接続部４１のｘ軸に平行な部分Ｐ３の略中央には、括れＮ２が設けられている。そして、該部分Ｐ３における括れＮ２よりもｘ軸方向の負方向側の部分は、巻線２１と金属端子２３とが接続される際に、溶接される溶接部４１ａ（端子側溶接部）である。ここで、ｘ軸に平行な部分Ｐ３における溶接部４１ａ以外の部分を隣接部４１ｂ（端子側隣接部）と称す。   A constricted N2 is provided in the approximate center of the portion P3 parallel to the x-axis of the connecting portion 41. A portion on the negative side in the x-axis direction from the constriction N2 in the portion P3 is a welded portion 41a (terminal-side welded portion) that is welded when the winding 21 and the metal terminal 23 are connected. . Here, a portion other than the welded portion 41a in the portion P3 parallel to the x axis is referred to as an adjacent portion 41b (terminal side adjacent portion).

接着部４２は、接触部４０のｚ軸方向の負方向側の端部と接続部４１のｙ軸に平行な部分Ｐ４とを接続しつつ、鍔部１６の面Ｓ１に接着されている。   The bonding portion 42 is bonded to the surface S1 of the flange portion 16 while connecting the end portion on the negative direction side in the z-axis direction of the contact portion 40 and the portion P4 parallel to the y-axis of the connection portion 41.

金属端子２４は、図３に示すように、実装基板のランドと接触する接触部５０、巻線２１と接続される接続部５１及び鍔部１８に接着された接着部５２により構成されている。接触部５０は、帯状の形状を成し、鍔部１８からｚ軸方向の正方向側に向かって突出している部分である。また、接触部５０のｚ軸方向の正方向側の端部は、ｘ軸及びｙ軸と平行な平面を形成しており、該平面が、実装基板のランドと接触する。   As shown in FIG. 3, the metal terminal 24 includes a contact portion 50 that contacts the land of the mounting substrate, a connection portion 51 that is connected to the winding 21, and an adhesive portion 52 that is bonded to the flange portion 18. The contact part 50 is a part which has a belt-like shape and protrudes from the flange part 18 toward the positive direction side in the z-axis direction. Further, the positive end of the contact portion 50 in the z-axis direction forms a plane parallel to the x-axis and the y-axis, and the plane contacts the land of the mounting board.

接続部５１は、帯状の形状を成しており、ｘ軸に平行な部分Ｐ５とｙ軸に平行な部分Ｐ６とが組み合わされることによって、略Ｌ字型の形状を成している。ｙ軸に平行な部分Ｐ６は、鍔部１８の面Ｓ４に接着されており、該部分Ｐ６におけるｙ軸方向の正方向の側の端部は、ｘ軸に平行な部分Ｐ５と接続されている。なお、ｘ軸に平行な部分Ｐ５は、鍔部１８よりも、ｙ軸方向の正方向側にはみ出している。   The connecting portion 51 has a belt-like shape, and has a substantially L-shape by combining a portion P5 parallel to the x-axis and a portion P6 parallel to the y-axis. The portion P6 parallel to the y-axis is bonded to the surface S4 of the flange portion 18, and the end of the portion P6 on the positive side in the y-axis direction is connected to the portion P5 parallel to the x-axis. . Note that the portion P5 parallel to the x-axis protrudes beyond the flange portion 18 toward the positive side in the y-axis direction.

接続部５１のｘ軸に平行な部分Ｐ５の略中央には、括れＮ３が設けられている。そして、該部分Ｐ５における括れＮ３よりもｘ軸方向の正方向側の部分は、巻線２１と金属端子２４とが接続される際に、溶接される溶接部５１ａ（端子側溶接部）である。ここで、ｘ軸に平行な部分Ｐ５における溶接部５１ａ以外の部分を隣接部５１ｂ（端子側隣接部）と称す。   A constricted N3 is provided in the approximate center of the portion P5 parallel to the x-axis of the connecting portion 51. A portion on the positive side in the x-axis direction from the constricted N3 in the portion P5 is a welded portion 51a (terminal-side welded portion) to be welded when the winding 21 and the metal terminal 24 are connected. . Here, a portion other than the welded portion 51a in the portion P5 parallel to the x-axis is referred to as an adjacent portion 51b (terminal-side adjacent portion).

接着部５２は、接触部５０のｚ軸方向の負方向側の端部と接続部５１のｙ軸に平行な部分Ｐ６とを接続しつつ、鍔部１８の面Ｓ２に接着されている。   The bonding portion 52 is bonded to the surface S2 of the flange portion 18 while connecting the end portion on the negative direction side in the z-axis direction of the contact portion 50 and the portion P6 parallel to the y-axis of the connection portion 51.

金属端子２５は、図３に示すように、実装基板のランドと接触する接触部６０、巻線２０と接続される接続部６１及び鍔部１８に接着された接着部６２により構成されている。接触部６０は、帯状の形状を成し、鍔部１８からｚ軸方向の正方向側に向かって突出している部分である。また、接触部６０のｚ軸方向の正方向側の端部は、ｘ軸及びｙ軸と平行な平面を形成しており、該平面が、実装基板のランドと接触する。   As shown in FIG. 3, the metal terminal 25 includes a contact portion 60 that contacts the land of the mounting substrate, a connection portion 61 that is connected to the winding 20, and an adhesive portion 62 that is bonded to the flange portion 18. The contact portion 60 is a portion that has a belt-like shape and protrudes from the flange portion 18 toward the positive direction side in the z-axis direction. Further, the positive end of the contact portion 60 in the z-axis direction forms a plane parallel to the x-axis and the y-axis, and the plane comes into contact with the land of the mounting board.

接続部６１は、帯状の形状を成しており、ｘ軸に平行な部分Ｐ７とｙ軸に平行な部分Ｐ８とが組み合わされることによって、略Ｌ字型の形状を成している。ｙ軸に平行な部分Ｐ８は、鍔部１８の面Ｓ４に接着されており、該部分Ｐ８におけるｙ軸方向の負方向の側の端部は、ｘ軸に平行な部分Ｐ７と接続されている。なお、ｘ軸方向に平行な部分Ｐ７は、鍔部１８よりも、ｙ軸方向の負方向側にはみ出している。   The connecting portion 61 has a belt-like shape, and has a substantially L-shape by combining a portion P7 parallel to the x-axis and a portion P8 parallel to the y-axis. The portion P8 parallel to the y-axis is bonded to the surface S4 of the flange portion 18, and the end of the portion P8 on the negative side in the y-axis direction is connected to the portion P7 parallel to the x-axis. . Note that the portion P7 parallel to the x-axis direction protrudes from the flange portion 18 to the negative direction side in the y-axis direction.

接続部６１のｘ軸方向に平行な部分Ｐ７の略中央には、括れＮ４が設けられている。そして、該部分Ｐ７における括れＮ４よりもｘ軸方向の正方向側の部分は、巻線２０と金属端子２５とが接続される際に、溶接される溶接部６１ａ（端子側溶接部）である。ここで、ｘ軸方向に平行な部分Ｐ７における溶接部６１ａ以外の部分を隣接部６１ｂ（端子側隣接部）と称す。   A constricted N4 is provided in the approximate center of the portion P7 parallel to the x-axis direction of the connecting portion 61. The portion on the positive side in the x-axis direction from the constriction N4 in the portion P7 is a welded portion 61a (terminal side welded portion) that is welded when the winding 20 and the metal terminal 25 are connected. . Here, a portion other than the welded portion 61a in the portion P7 parallel to the x-axis direction is referred to as an adjacent portion 61b (terminal-side adjacent portion).

接着部６２は、接触部６０のｚ軸方向の負方向側の端部と接続部６１のｙ軸に平行な部分Ｐ８とを接続しつつ、鍔部１８の面Ｓ２に接着されている。   The bonding portion 62 is bonded to the surface S2 of the flange portion 18 while connecting the end portion of the contact portion 60 on the negative direction side in the z-axis direction and the portion P8 parallel to the y-axis of the connection portion 61.

巻線２０，２１は、図１に示すように、巻芯部１４に巻き回されている導線であり、銅や銀といった導電性材料を主成分とする芯線が、ポリウレタン等の絶縁材料により被覆されることにより構成されている。   As shown in FIG. 1, the windings 20 and 21 are conductive wires wound around the winding core portion 14, and a core wire mainly composed of a conductive material such as copper or silver is covered with an insulating material such as polyurethane. Is configured.

巻線２０のｘ軸方向の負方向側の一端は、金属端子２２と接続され、巻線２０のｘ軸方向の正方向側の他端は、金属端子２５と接続されている。また、巻線２０は、図２に示すように、金属端子２２に溶接された溶接部２０ａ（巻線側溶接部）、及び溶接部２０ａに隣接する隣接部２０ｂ（巻線側隣接部）を有している。溶接部３１ａと溶接部２０ａとは、溶接により一体化されて球状をなしている。また、隣接部２０ｂは、括れＮ１及び隣接部３１ｂに跨って位置している。さらに、図３に示すように、巻線２０は、金属端子２５に溶接された溶接部２０ｃ（巻線側溶接部）、及び溶接部２０ｃに隣接する隣接部２０ｄ（巻線側隣接部）を有している。溶接部６１ａと溶接部２０ｃとは、溶接により一体化されて球状をなしている。また、隣接部２０ｄは、括れＮ４及び隣接部６１ｂに跨って位置している。   One end on the negative side in the x-axis direction of the winding 20 is connected to the metal terminal 22, and the other end on the positive direction side in the x-axis direction of the winding 20 is connected to the metal terminal 25. As shown in FIG. 2, the winding 20 includes a welded portion 20a (winding side welded portion) welded to the metal terminal 22 and an adjacent portion 20b (winding side adjacent portion) adjacent to the welded portion 20a. Have. The welded portion 31a and the welded portion 20a are integrated by welding to form a spherical shape. Further, the adjacent portion 20b is located across the constricted N1 and the adjacent portion 31b. Further, as shown in FIG. 3, the winding 20 includes a welded portion 20c (winding side welded portion) welded to the metal terminal 25 and an adjacent portion 20d (winding side adjacent portion) adjacent to the welded portion 20c. Have. The welded portion 61a and the welded portion 20c are integrated by welding to form a spherical shape. The adjacent portion 20d is located across the constricted N4 and the adjacent portion 61b.

また、巻線２１のｘ軸方向の負方向側の一端は、図１に示すように、金属端子２３と接続され、巻線２１のｘ軸方向の正方向側の他端は、金属端子２４と接続されている。また、巻線２１は、図２に示すように、金属端子２３に溶接された溶接部２１ａ（巻線側溶接部）、及び溶接部２１ａに隣接する隣接部２１ｂ（巻線側隣接部）を有している。溶接部４１ａと溶接部２１ａとは、溶接により一体化されて球状をなしている。また、隣接部２１ｂは、括れＮ２及び隣接部４１ｂに跨って位置している。さらに、巻線２１は、図３に示すように、金属端子２４に溶接された溶接部２１ｃ（巻線側溶接部）、及び溶接部２１ｃに隣接する隣接部２１ｄ（巻線側隣接部）を有している。溶接部５１ａと溶接部２１ｃとは、溶接により一体化されて球状をなしている。また、隣接部２１ｄは、括れＮ３及び隣接部５１ｂに跨って位置している。   Further, as shown in FIG. 1, one end on the negative side in the x-axis direction of the winding 21 is connected to the metal terminal 23, and the other end on the positive direction side in the x-axis direction of the winding 21 is connected to the metal terminal 24. And connected. As shown in FIG. 2, the winding 21 includes a welded portion 21a (winding side welded portion) welded to the metal terminal 23 and an adjacent portion 21b (winding side adjacent portion) adjacent to the welded portion 21a. Have. The welded portion 41a and the welded portion 21a are integrated by welding to form a spherical shape. Further, the adjacent portion 21b is located across the constricted N2 and the adjacent portion 41b. Further, as shown in FIG. 3, the winding 21 includes a welded portion 21c (winding side welded portion) welded to the metal terminal 24 and an adjacent portion 21d (winding side adjacent portion) adjacent to the welded portion 21c. Have. The welded part 51a and the welded part 21c are integrated by welding to form a spherical shape. Further, the adjacent portion 21d is located across the constricted N3 and the adjacent portion 51b.

（巻線型電子部品の機能）
以上のように構成された巻線型電子部品１では、以下で説明するような機能を有する。(Functions of wire wound electronic components)
The wound electronic component 1 configured as described above has functions as described below.

巻線型電子部品１では、巻線２０，２１の互いの中心軸が一致するように設けられているため、巻線２０に流入した電流により発生した磁束が、巻線２１を通過し、巻線２１に流入した電流により発生した磁束が、巻線２０を通過する。   In the wound electronic component 1, since the central axes of the windings 20 and 21 are provided to coincide with each other, the magnetic flux generated by the current flowing into the winding 20 passes through the winding 21, and the winding Magnetic flux generated by the current flowing into 21 passes through the winding 20.

このとき、コモンモードの電流により発生する磁束の方向は、同じ方向である。そのため、巻線２０，２１で発生した磁束同士が一体となって強め合い、コモンモードの電流に対してインピーダンスが発生する。   At this time, the direction of the magnetic flux generated by the common mode current is the same direction. Therefore, the magnetic fluxes generated in the windings 20 and 21 are united and strengthened, and impedance is generated for the common mode current.

一方、ノーマルモードの電流が流れた場合には、巻線２０において発生する磁束と巻線２１において発生する磁束とは、逆方向となる。従って、ノーマルモードの電流に対しては、インピーダンスが発生しない。以上より、巻線型電子部品１は、コモンモードチョークコイルとして機能する。   On the other hand, when a normal mode current flows, the magnetic flux generated in the winding 20 and the magnetic flux generated in the winding 21 are in opposite directions. Therefore, no impedance is generated for the normal mode current. As described above, the wound electronic component 1 functions as a common mode choke coil.

（巻線型電子部品の製造方法）
以下に、実施例である巻線型電子部品の製造方法について説明する。(Method for manufacturing wire wound electronic components)
Below, the manufacturing method of the winding type electronic component which is an Example is demonstrated.

まず、コア１２の材料となるフェライトを主成分とした粉末を準備する。そして、準備したフェライト粉末を、雌型に充填する。充填した粉末を雄型で加圧することによって、巻芯部１４の形状及び鍔部１６，１８の形状を成形する。そして、巻芯部１４及び鍔部１６，１８の成形終了後に焼成を行い、コア１２が完成する。   First, a powder composed mainly of ferrite as a material for the core 12 is prepared. Then, the prepared ferrite powder is filled into a female mold. By pressing the filled powder with a male mold, the shape of the core 14 and the shapes of the flanges 16 and 18 are formed. And after completion | finish of shaping | molding of the core part 14 and the collar parts 16 and 18, baking is performed and the core 12 is completed.

次に、金属端子２２〜２５を作製する。まず、リン青銅、真鍮等を主成分とする帯状の金属板Ｂに対して、打ち抜きプレスを施す。これよりに、金属板Ｂの打ち抜かれた部分である打ち抜き部Ｑに金属端子２２〜２５の輪郭形状が形成される。このとき、金属端子２２〜２５における接続部３１，４１，５１，６１となるべき部分に、括れＮ１〜Ｎ４が形成される。さらに、打ち抜き部Ｑに対して曲げ加工を施すことによって、図４に示すような、金属板Ｂに繋がった状態の金属端子２２〜２５が完成する。   Next, metal terminals 22 to 25 are produced. First, a punching press is performed on the band-shaped metal plate B mainly composed of phosphor bronze, brass or the like. Thus, the contour shapes of the metal terminals 22 to 25 are formed in the punched portion Q, which is the portion where the metal plate B is punched. At this time, the constrictions N1 to N4 are formed in the portions to be the connection portions 31, 41, 51, and 61 in the metal terminals 22 to 25. Further, by bending the punched portion Q, the metal terminals 22 to 25 connected to the metal plate B as shown in FIG. 4 are completed.

次に、コア１２と金属端子２２〜２５とを接着する。接着をする際には、金属板Ｂに繋がった状態の金属端子２２〜２５に予めエポキシ系の接着剤を塗布しておく。そして、金属板Ｂの打ち抜き部Ｑに対して、図４に示すように、コア１２を挿入する。これにより、コア１２と金属端子２２〜２５とが接着される。その後、金属端子２２〜２５を金属板Ｂから切り離す。   Next, the core 12 and the metal terminals 22 to 25 are bonded. When bonding, an epoxy-based adhesive is applied in advance to the metal terminals 22 to 25 connected to the metal plate B. Then, the core 12 is inserted into the punched portion Q of the metal plate B as shown in FIG. Thereby, the core 12 and the metal terminals 22-25 are adhere | attached. Thereafter, the metal terminals 22 to 25 are separated from the metal plate B.

次に、金属端子２２〜２５が設けられたコア１２の巻芯部１４に巻線２０，２１を巻きつける。この際、巻線２０，２１の両端を所定量だけ巻芯部１４から引き出しておく。   Next, the windings 20 and 21 are wound around the core part 14 of the core 12 provided with the metal terminals 22 to 25. At this time, both ends of the windings 20 and 21 are pulled out from the core part 14 by a predetermined amount.

巻線２０，２１を巻芯部１４に巻きつけた後に、巻線２０，２１と金属端子２２〜２５とを接続する。巻線２０，２１と金属端子２２〜２５との接続は、熱圧着工程と溶接工程により行われる。   After winding the windings 20 and 21 around the core part 14, the windings 20 and 21 and the metal terminals 22 to 25 are connected. The windings 20 and 21 and the metal terminals 22 to 25 are connected by a thermocompression bonding process and a welding process.

熱圧着工程では、まず、図５に示すように、巻線２０，２１の巻芯部１４から引き出された部分を、金属端子２２〜２５における接続部３１，４１，５１，６１上に載置する。次に、図６に示すように、巻線２０，２１を挟むようにして、接続部３１，４１，５１，６１にヒーターチップＨを押し当て、巻線２０，２１の端部を金属端子２２〜２５に熱圧着する。これにより、巻線２０，２１における金属端子２２〜２５と熱圧着された部分は、図７に示すようにつぶされ、その断面は、図８に示すように、ｚ軸方向の高さよりもｙ軸方向の幅の方が大きな扁平な略楕円形状となる。なお、ヒーターチップＨを接続部３１，４１，５１，６１に押し当てる際には、ヒーターチップＨを接続部３１，４１，５１，６１におけるｘ軸に平行な部分Ｐ１，Ｐ３，Ｐ５，Ｐ７の略全体に対して押し当てる。つまり、熱圧着は、金属端子２２〜２５における括れＮ１〜Ｎ４、及び金属端子２２〜２５における括れＮ１〜Ｎ４以外の部分にも行われる。また、図８におけるハッチングを囲む部分は、巻線の芯線を被覆している絶縁材料がヒーターチップによる熱圧着によって溶け、巻線の芯線の周りに広がった状態を表している。   In the thermocompression bonding step, first, as shown in FIG. 5, the portions drawn out from the core portion 14 of the windings 20 and 21 are placed on the connection portions 31, 41, 51, 61 in the metal terminals 22-25. To do. Next, as illustrated in FIG. 6, the heater chip H is pressed against the connection portions 31, 41, 51, 61 so as to sandwich the windings 20, 21, and the ends of the windings 20, 21 are connected to the metal terminals 22 to 25. Thermocompression bonded to. As a result, the portions of the windings 20 and 21 that are thermocompression bonded to the metal terminals 22 to 25 are crushed as shown in FIG. 7, and the cross section thereof is y higher than the height in the z-axis direction as shown in FIG. A flat, substantially elliptical shape having a larger axial width. When the heater chip H is pressed against the connection parts 31, 41, 51, 61, the heater chip H is connected to the parts P1, P3, P5, P7 parallel to the x-axis of the connection parts 31, 41, 51, 61. Press against almost the whole. That is, thermocompression bonding is also performed on portions other than the constrictions N1 to N4 in the metal terminals 22 to 25 and the constrictions N1 to N4 in the metal terminals 22 to 25. Further, the portion surrounding the hatching in FIG. 8 represents a state in which the insulating material covering the core wire of the winding is melted by thermocompression bonding by the heater chip and spreads around the core wire of the winding.

熱圧着工程後に余剰部分をカットされた巻線２０，２１の端部に対して、レーザー照射又はアーク溶接を行う。これにより、巻線２０，２１と金属端子２２〜２５とが溶融し、図１に示すような球状を成して溶接される。ただし、金属端子２２〜２５には括れＮ１〜Ｎ４が設けられているため、括れＮ１〜Ｎ４で、巻線２０，２１と金属端子２２〜２５との溶融は止まる。従って、巻線２０，２１における隣接部２０ｂ，２０ｄ，２１ｂ，２１ｄは、金属端子２２〜２５と共に溶融及び変形することなく、その断面は、図８に示すような扁平な形状を保つとともに、外部から視認可能である。以上のような工程を経て、巻線型電子部品１が完成する。   Laser irradiation or arc welding is performed on the ends of the windings 20 and 21 whose surplus portions have been cut after the thermocompression bonding step. Thereby, the windings 20 and 21 and the metal terminals 22 to 25 are melted and welded in a spherical shape as shown in FIG. However, since the metal terminals 22 to 25 are provided with the necks N1 to N4, melting of the windings 20 and 21 and the metal terminals 22 to 25 stops at the necks N1 to N4. Therefore, the adjacent portions 20b, 20d, 21b, and 21d in the windings 20 and 21 are not melted and deformed together with the metal terminals 22 to 25, and the cross section thereof maintains a flat shape as shown in FIG. It is visible from. Through the steps as described above, the wound electronic component 1 is completed.

（効果）
巻線型電子部品１の製造方法では、巻線２０，２１と金属端子２２〜２５との接続において、熱圧着を行ってから、溶接を行っている。これにより、巻線２０，２１と金属端子２２〜２５とが密着した状態で、溶接が行われることになる。従って、巻線型電子部品１の製造方法では、溶接不良が生じにくい。(effect)
In the method for manufacturing the wound electronic component 1, welding is performed after thermocompression bonding is performed in the connection between the windings 20 and 21 and the metal terminals 22 to 25. Thereby, welding is performed in the state which the coil | windings 20 and 21 and the metal terminals 22-25 closely_contact | adhered. Therefore, in the manufacturing method of the wire wound electronic component 1, poor welding hardly occurs.

また、金属端子２２〜２５の接続部３１，４１，５１，６１には、括れＮ１〜Ｎ４が設けられている。これにより、巻線２０，２１と金属端子２２〜２５とを溶接する際に、括れＮ１〜Ｎ４で巻線２０，２１と金属端子２２〜２５との溶融が止まる。つまり、巻線２０，２１と金属端子２２〜２５とが溶融する位置が安定し、接着部３２，４２，５２，６２まで溶融が広がるなどの弊害を防止することができる。   Further, constrictions N1 to N4 are provided in the connection portions 31, 41, 51, 61 of the metal terminals 22 to 25, respectively. Thereby, when welding the windings 20 and 21 and the metal terminals 22 to 25, the melting of the windings 20 and 21 and the metal terminals 22 to 25 is stopped by the constriction N1 to N4. That is, the position where the windings 20 and 21 and the metal terminals 22 to 25 are melted is stabilized, and adverse effects such as melting spreading to the bonding portions 32, 42, 52, and 62 can be prevented.

さらに、巻線２０，２１と金属端子２２〜２５との熱圧着工程では、ヒーターチップＨを接続部３１，４１，５１，６１におけるｘ軸に平行な部分Ｐ１，Ｐ３，Ｐ５，Ｐ７の略全体に対して押し当てている。これにより、巻線２０，２１におけるｘ軸に平行な部分Ｐ１，Ｐ３，Ｐ５，Ｐ７に載置された部分の略全体が、扁平な形状を成す。また、上述のとおり、括れＮ１〜Ｎ４で巻線２０，２１と金属端子２２〜２５との溶融は止まる。そうすると、巻線２０，２１におけるｘ軸に平行な部分Ｐ１，Ｐ３，Ｐ５，Ｐ７に載置された部分の全体が溶融されることはないため、扁平な形状を成す巻線２０，２１を外部から視認することができる。結果として、巻線２０，２１と金属端子２２〜２５が溶接された後に、それらが適正に熱圧着されたか否かを、一目で確認することができる。なお、巻線２０，２１と金属端子２２〜２５との熱圧着工程では、必ずしも、ｘ軸に平行な部分Ｐ１，Ｐ３，Ｐ５，Ｐ７の略全体に対して、ヒーターチップＨを押し当てる必要はない。例えば、ｘ軸に平行な部分Ｐ１，Ｐ３，Ｐ５，Ｐ７における隣接部３１ｂ，４１ｂ，５１ｂ，６１ｂの括れ加工が施されていない部分だけに、ヒーターチップＨを押し当ててもよい。この場合であっても、上記同様に、巻線２０，２１と金属端子２２〜２５が溶接された後に、それらが適正に熱圧着されたか否かを、一目で確認することができる。   Furthermore, in the thermocompression bonding process of the windings 20 and 21 and the metal terminals 22 to 25, the heater chip H is connected to the connection parts 31, 41, 51 and 61 by substantially the entire parts P1, P3, P5 and P7 parallel to the x-axis. Against. Thereby, the substantially whole of the part mounted in the parts P1, P3, P5, and P7 parallel to the x-axis in the windings 20 and 21 forms a flat shape. Moreover, as above-mentioned, the fusion | melting with the windings 20 and 21 and the metal terminals 22-25 stops by the constriction N1-N4. As a result, the entire portions placed on the portions P1, P3, P5, and P7 parallel to the x-axis of the windings 20 and 21 are not melted, so that the windings 20 and 21 having a flat shape are externally connected. Can be visually recognized. As a result, after the windings 20 and 21 and the metal terminals 22 to 25 are welded, it can be confirmed at a glance whether or not they are properly thermocompression bonded. In the thermocompression bonding process between the windings 20 and 21 and the metal terminals 22 to 25, it is not always necessary to press the heater chip H against substantially the entire portions P1, P3, P5 and P7 parallel to the x axis. Absent. For example, the heater chip H may be pressed only to the portions where the adjacent portions 31b, 41b, 51b, 61b in the portions P1, P3, P5, P7 parallel to the x-axis are not subjected to the constriction processing. Even in this case, as described above, after the windings 20 and 21 and the metal terminals 22 to 25 are welded, it can be confirmed at a glance whether or not they are properly thermocompression bonded.

（他の実施例）
本発明に係る巻線型電子部品及び巻線型電子部品の製造方法は前記実施例に限定するものではなく、その要旨の範囲内で種々に変更することができる。例えば、巻線と金属端子とが熱圧着された際に、必ずしも熱圧着された巻線の断面形状が扁平な形状でなくてもよい。具体的には、巻線と金属端子とが熱圧着された際に、巻線の芯線を被覆する絶縁材料のポリウレタンなどが溶けて、該巻線のポリウレタンが金属端子と固着する程度であってもよい。(Other examples)
The wire wound electronic component and the method for manufacturing the wire wound electronic component according to the present invention are not limited to the above-described embodiments, and can be variously modified within the scope of the gist thereof. For example, when the winding and the metal terminal are thermocompression bonded, the cross-sectional shape of the thermocompressed winding does not necessarily have to be a flat shape. Specifically, when the winding and the metal terminal are thermocompression bonded, the polyurethane of the insulating material covering the core wire of the winding is melted, and the polyurethane of the winding is fixed to the metal terminal. Also good.

以上のように、本発明は、巻線型電子部品及び巻線型電子部品の製造方法に有用であり、巻線と金属端子との接続における溶接不良が生じにくい点で優れている。   As described above, the present invention is useful for a wire wound electronic component and a method for manufacturing a wire wound electronic component, and is excellent in that poor welding is hardly caused in the connection between the winding and the metal terminal.

Ｎ１〜Ｎ４ 括れ
１ 巻線型電子部品
１２ コア
１４ 巻芯部
１６，１８ 鍔部
２０，２１ 巻線
２２〜２５ 金属端子
２０ａ，２０ｃ，２１ａ，２１ｃ 溶接部（巻線側溶接部）
２０ｂ，２０ｄ，２１ｂ，２１ｄ 隣接部（巻線側隣接部）
３１ａ，４１ａ，５１ａ，６１ａ 溶接部（端子側溶接部）
３１ｂ，４１ｂ，５１ｂ，６１ｂ 隣接部（端子側隣接部）N1 to N4 Constriction 1 Winding type electronic component 12 Core 14 Winding core portion 16, 18 鍔 portion 20, 21 Winding 22-25 Metal terminal 20a, 20c, 21a, 21c Welding portion (winding side welding portion)
20b, 20d, 21b, 21d Adjacent part (winding side adjacent part)
31a, 41a, 51a, 61a Welded part (terminal side welded part)
31b, 41b, 51b, 61b Adjacent part (terminal side adjacent part)

Claims (6)

巻芯部及び該巻芯部の両端に設けられた鍔部を含むコア、該鍔部に設けられた金属端子、並びに該巻芯部に巻き回された巻線を有する巻線型電子部品の製造方法であって、
前記金属端子は、前記巻線と溶接される端子側溶接部、及び該端子側溶接部に隣接する端子側隣接部を有し、
前記巻線型電子部品の製造方法は、
前記端子側隣接部に対して、括れを設ける加工を施す括れ加工工程と、
前記括れ加工工程後に、前記巻芯部から前記巻線を引き出した部分を前記巻芯部から前記巻線の先端に向かう方向に前記端子側隣接部及び前記端子側溶接部の順にこれらの上に配置して、前記端子側隣接部の少なくとも一部及び前記端子側溶接部と前記巻線とを熱圧着する熱圧着工程と、
熱圧着された前記金属端子と前記巻線とを溶接する溶接工程と、
を備えること、
を特徴とする巻線型電子部品の製造方法。 Manufacture of a winding-type electronic component having a core including a core, a core including flanges provided at both ends of the core, a metal terminal provided on the flange, and a winding wound around the core A method,
The metal terminal has a terminal side welded portion welded to the winding, and a terminal side adjacent portion adjacent to the terminal side welded portion,
The method of manufacturing the wound electronic component is as follows:
For the terminal side adjacent portion, a constricting process step for performing constriction processing,
After the constriction processing step, the portion where the winding is drawn out from the core portion is placed in the order of the terminal side adjacent portion and the terminal side welded portion in the direction from the core portion toward the tip of the winding. Arranging and thermocompression bonding the thermocompression bonding of at least a part of the terminal side adjacent portion and the terminal side welding portion and the winding;
A welding step of welding the metal terminal and the winding that are thermocompression bonded;
Providing
A method for manufacturing a wound electronic component. 前記熱圧着工程において、前記端子側溶接部、及び前記端子側隣接部における括れ加工が施された部分以外の部分に対して熱圧着を行うこと、
を特徴とする請求項１に記載の巻線型電子部品の製造方法。 In the thermocompression bonding step, thermocompression bonding is performed on a portion other than the portion subjected to the constriction processing in the terminal side welded portion and the terminal side adjacent portion,
The method of manufacturing a wire wound electronic component according to claim 1 . 前記熱圧着工程において、前記端子側溶接部、前記端子側隣接部における括れ加工が施された部分、及び前記端子側隣接部における括れ加工が施された部分以外の部分に対して熱圧着を行うこと、
を特徴とする請求項１に記載の巻線型電子部品の製造方法。 In the thermocompression bonding step, thermocompression bonding is performed on a portion other than the portion subjected to the constriction processing in the terminal side welding portion, the terminal side adjacent portion, and the portion subjected to the constriction processing in the terminal side adjacent portion. about,
The method of manufacturing a wire wound electronic component according to claim 1 . 巻芯部及び該巻芯部の両端に設けられた鍔部を有するコアと、
前記鍔部に設けられた金属端子と、
前記巻芯部に巻き回され、かつ、前記金属端子と溶接される巻線側溶接部、及び該巻線側溶接部と隣接する巻線側隣接部を有する巻線と、
を備え、
前記巻線側隣接部における前記巻線の進行方向に直交する断面の断面形状は、該巻線の前記巻芯部上に位置する部分における該巻線の進行方向に直交する断面の断面形状と比べ、より扁平であり、
前記巻線側隣接部は、前記金属端子に固定されていること、
を特徴とする巻線型電子部品。 A core having a core part and flanges provided at both ends of the core part;
A metal terminal provided on the collar,
A winding having a winding side welding portion wound around the winding core portion and welded to the metal terminal, and a winding side adjacent portion adjacent to the winding side welding portion;
With
The cross-sectional shape of the cross section orthogonal to the traveling direction of the winding in the winding-side adjacent portion is the cross-sectional shape of the cross section orthogonal to the traveling direction of the winding in the portion located on the core portion of the winding. compared, Ri flatter der,
The winding side adjacent portion is fixed to the metal terminal;
Wound-type electronic parts characterized by 前記金属端子における前記巻線と溶接される端子側溶接部に隣接する端子側隣接部には、括れが設けられており、
前記巻線において前記巻芯部から引き出された部分は、前記巻芯部から前記巻線の先端に向かう方向に前記端子側隣接部及び前記端子側溶接部の順にこれらの上に配置されていること、
を特徴とする請求項４に記載の巻線型電子部品。 Wherein the terminal-side adjacent portion adjacent to the terminal side welds to be welded to the windings of the metal terminals are provided constriction,
In the winding, the portion drawn from the core portion is arranged on the terminal side adjacent portion and the terminal side welded portion in this order from the core portion toward the tip of the winding. about,
The wound electronic component according to claim 4 , wherein: 前記巻線側隣接部は、前記金属端子における前記括れが設けられている部分、及び前記金属端子における前記括れが設けられている部分以外の部分に跨って位置していること、
を特徴とする請求項５に記載の巻線型電子部品。
The winding-side adjacent portion is located across a portion other than the portion where the constriction is provided in the metal terminal and the portion where the constriction is provided in the metal terminal;
The wound electronic component according to claim 5 .
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