WO2021059903A1 - 電気・電子機器接続部材及びその製造方法、並びに、コイル及び電気・電子機器 - Google Patents

電気・電子機器接続部材及びその製造方法、並びに、コイル及び電気・電子機器 Download PDF

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Publication number
WO2021059903A1
WO2021059903A1 PCT/JP2020/033194 JP2020033194W WO2021059903A1 WO 2021059903 A1 WO2021059903 A1 WO 2021059903A1 JP 2020033194 W JP2020033194 W JP 2020033194W WO 2021059903 A1 WO2021059903 A1 WO 2021059903A1
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WO
WIPO (PCT)
Prior art keywords
connecting member
conductor
electronic device
electrical
conductor end
Prior art date
Application number
PCT/JP2020/033194
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English (en)
French (fr)
Japanese (ja)
Inventor
宏文 大島
和行 梅野
武藤　大介
恵一 冨澤
Original Assignee
古河電気工業株式会社
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Application filed by 古河電気工業株式会社 filed Critical 古河電気工業株式会社
Priority to JP2021548736A priority Critical patent/JPWO2021059903A1/ja
Publication of WO2021059903A1 publication Critical patent/WO2021059903A1/ja

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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/22—End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end
    • 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

Definitions

  • the conductors are joined by arranging them in the vicinity where they can be welded, usually facing each other (whether in contact (overlap) or non-contact).
  • a welding method is often used.
  • the conductors are directly welded after holding the facing arrangement state by a holding mechanism so that the facing arrangement state is not impaired before or during welding.
  • Such a welding method is described in, for example, Patent Document 1.
  • the thermal energy applied during welding propagates to the holding mechanism that holds the conductors. Therefore, in order to weld the conductors to the desired welding state, the applied thermal energy is applied. It is necessary to apply more energy than required for welding. Therefore, when welding a member for electric / electronic equipment having a resin member such as an insulated electric wire material, the excessively applied heat energy deteriorates the resin member (insulating coating layer of the insulated electric wire material) propagated through the conductor. Further, if the resin member remains in the welded portion, there arises a problem that a blow hole or the like is generated. The occurrence of blow holes causes a decrease in welding strength and an increase in electrical resistance.
  • the facing area and the normal facing length (welding allowance, and as a result, the welding region) of the conductors to be arranged facing each other are increased to reach the resin member of thermal energy. It suppresses propagation.
  • the miniaturization and high performance of electrical and electronic equipment have been rapidly progressing, and the conventional welding method that requires a large welding allowance cannot sufficiently cope with the progress.
  • the present invention provides an electrical / electronic device connection member and a manufacturing method thereof, which can join conductors to each other with high strength and low resistance, and can meet the demands for miniaturization and high performance of electrical / electronic devices.
  • the challenge is to provide.
  • Another object of the present invention is to provide a coil using the electric / electronic device connecting member and an electric / electronic device using the coil.
  • the joining method is not limited to welding, and even if the joining method uses a conductive adhesive or the like, by using the above-mentioned connecting member, the positional deviation in the face-to-face arrangement state can be restrained, and the desired joining is possible.
  • a connecting member and restraining the end of the conductor it is possible to eliminate the need for a holding mechanism that is essential for conventional welding methods and welding equipment, or to adopt a joining method using a conductive adhesive or the like. By doing so, even if the above problem due to the use of the holding mechanism is solved and the joining allowance (welding allowance) is narrowed or shortened (hereinafter, simply referred to as narrowing) according to the required level, the desired joining is achieved. It was found that the state (high strength and low resistance) can be realized.
  • the present invention has been further studied based on the above findings and has been completed.
  • ⁇ 3> The electrical / electronic device connecting member according to ⁇ 1> or ⁇ 2>, wherein the misalignment restraining portion restrains the misalignment of the conductor end portion in the axial direction of the conductor.
  • ⁇ 4> The electrical / electronic device connecting member according to any one of ⁇ 1> to ⁇ 3>, wherein the connecting member is mounted on the outside of the conductor end portion.
  • ⁇ 5> The electrical / electronic device connecting member according to any one of ⁇ 1> to ⁇ 4>, wherein the conductor end portion has a restrained portion that locks with the misalignment restraining portion.
  • ⁇ 6> The electrical / electronic device connecting member according to any one of ⁇ 1> to ⁇ 5>, wherein the connecting member is composed of a single member or a plurality of members.
  • the connecting member has a joining base portion to be joined to the conductor end portion, and a hem portion extending in the axial direction from the end edge of the joining base portion along the side surface of the conductor end portion.
  • the electrical / electronic device connecting member according to any one of 1> to ⁇ 6>.
  • ⁇ 8> The electrical / electronic device connecting member ⁇ 9> described in any one of ⁇ 1> to ⁇ 7>, wherein the connecting member is joined to the conductor end portion by laser welding.
  • the method for manufacturing an electrical / electronic device connecting member according to any one of ⁇ 8> A connecting member having a misalignment restraint portion of the conductor end portion is attached to the conductor end portions of the electric / electronic device members arranged facing each other, and then the conductor end portion and the connecting member are joined.
  • a method for manufacturing electrical / electronic device connecting members ⁇ 10> The method for manufacturing an electrical / electronic device connecting member according to ⁇ 9>, wherein the conductor end portion and the connecting member are joined by laser welding.
  • ⁇ 12> An electrical / electronic device having the coil according to ⁇ 11> above.
  • FIG. 1 is a schematic front view showing the vicinity of a joint portion of a conductor end portion for an example of a preferred embodiment of the electrical / electronic device connecting member of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a cross section taken along the line AA in FIG.
  • FIG. 3 is a schematic cross-sectional view showing the vicinity of a joint at the end of a conductor for another preferred embodiment of the electrical / electronic device connecting member of the present invention.
  • FIG. 4 is a schematic cross-sectional view showing the vicinity of the joint portion of the conductor end portion with respect to another preferred embodiment of the electrical / electronic device connecting member of the present invention.
  • FIG. 1 is a schematic front view showing the vicinity of a joint portion of a conductor end portion for an example of a preferred embodiment of the electrical / electronic device connecting member of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing a cross section taken along the line AA in FIG.
  • FIG. 3 is a schematic cross
  • FIG. 5 is a schematic cross-sectional view showing the vicinity of the joint portion of the conductor end portion with respect to an example of still another preferable embodiment of the electrical / electronic device connecting member of the present invention.
  • FIG. 6 is a schematic cross-sectional view showing the vicinity of a joint at the end of a conductor for another preferred embodiment of the electrical / electronic device connecting member of the present invention.
  • FIG. 7 is a schematic cross-sectional view showing the vicinity of the joint portion of the conductor end portion with respect to another preferred embodiment of the electrical / electronic device connecting member of the present invention.
  • FIG. 8 is a cross-sectional view showing an insulated electric wire material used for the electrical / electronic device connecting member of the present invention.
  • FIG. 9 is a schematic partial cross-sectional view showing an example of a preferred embodiment of the coil of the present invention.
  • FIG. 10 is a schematic perspective exploded view showing an example of a preferred embodiment of the stator used in the electric / electronic device of the present invention.
  • FIG. 11 is a schematic exploded perspective view showing an example of a preferred embodiment of the stator used in the electric / electronic device of the present invention.
  • the electrical / electronic device connecting member (also referred to as a connecting member for electrical / electronic equipment) of the present invention is displaced between the conductor end portion of the electrical / electronic device member arranged face-to-face and the facing arrangement state at the conductor end portion. It is formed by joining with a connecting member having a restraining portion.
  • the electrical / electronic device connecting member may be any member as long as it is a member in which the electrical / electronic device members are joined by the conductor ends and the connecting members arranged facing each other, and it does not matter whether or not the member is mounted on the electrical / electronic device.
  • the connecting member has a restraining portion on the inner surface that restrains the facing arrangement state of the conductor end portion, and preferably the conductor (end portion) is locked with the restraining portion (the end portion). It can also be said to be an electrical / electronic device connecting member having a restrained portion (engaged and screwed) on the outer surface, for example. Further, it can be said that the conductors of the electric / electronic device member are joined by the connecting member by using the connecting member having the position deviation restraining portion.
  • the member for an electric / electronic device means a member used (mounted) in the electric / electronic device and electrically joined to another member or the like.
  • wiring materials such as insulated electric wire materials, terminals, bus bars, bus burring, motor / generator connections, and the like can be mentioned. Therefore, the electric / electronic device connecting member of the present invention may be a member in which one or a plurality of members for electric / electronic devices are joined, and a member in which a plurality of wiring materials are joined to each other, a wiring material and a terminal, or a member. It includes a member to which a bus burring is joined, and further, a member to which a plurality of wirings and joint parts are connected.
  • the misaligned restraint portion (sometimes referred to simply as the restraint portion) does not cause a relative misalignment (does not fluctuate) so that the conductor end portions (the conductor end portions are arranged facing each other) arranged facing each other do not cause a relative misalignment. It means a structural part that can hold or support (hold) conductor ends with each other in a state of being restrained (regulated), and is also called a restraining mechanism.
  • This misalignment restraint is the position of the conductor end in the direction intersecting the axis of the conductor end and / or the position of the conductor end in the axial direction of the conductor end in the face-to-face arrangement state of the conductor end.
  • the conductor ends arranged facing each other are fixed in a predetermined facing arrangement state.
  • the restraint portion that restrains the misalignment of the conductor end in the axial direction of the conductor end is in contact with the end (end face) of the conductor end arranged facing each other and regulates the misalignment movement in the same direction, and the conductor end
  • the restraint portion that restrains the positional deviation of the conductor end portion in the direction intersecting the axis of the above is in contact with the end portion (side surface) of the conductor end portion arranged facing each other and regulates the positional deviation in the same direction.
  • the means of arranging the conductor ends face-to-face means both a mode in which a plurality of conductor ends are arranged facing each other at a distance capable of joining and a mode in which the conductor ends are arranged in contact with each other.
  • the distance that can be joined varies depending on the size of the conductor (conductor end), the joining method, and the like, and is not unique. However, the distance between the conductor ends arranged facing each other is, for example, about 0.5 mm.
  • the method of arranging the conductor ends face-to-face is not particularly limited, and the arrangement state, shape, etc. of the conductors can be appropriately changed.
  • Examples thereof include a method of arranging at least the vicinity of the edge in a facing state, a method of using these in combination, and the like.
  • the “face-to-face arrangement” means that the conductor ends may be arranged in a state where they can be joined, and a state in which the conductor ends are arranged side by side is preferable.
  • the face-to-face arrangement is performed by appropriately setting, for example, the separation distance of the conductor end portions, the face-to-face area, the position in the axial direction (end face height), and the like.
  • the facing area of the conductor end portions to be arranged facing each other is appropriately determined according to the degree of miniaturization, high performance, etc.
  • the conductor ends arranged facing each other may be both conductor ends of the same (one or one) electric / electronic device member, but may be different (plural) electric / electronic device members. It is preferable that the ends of the conductors are connected to each other.
  • joining in addition to welding (butt welding, lap welding, spot welding, etc.), joining includes bonding using a conductive adhesive, a conductive adhesive sheet, etc. Welding is preferred and laser welding is more preferred in terms of electrical resistance.
  • joining means joining with the ends of the conductors to be joined in contact with each other, separated from each other, and further via other members or the like.
  • the contacted state includes an aspect through a plating layer made of various metals formed on the surface of the member to be melted in order to improve weldability.
  • a welded portion is formed.
  • the welded portion includes a portion where the materials of the conductor and the connecting member are melt-mixed (alloyed, solidified, etc.) with each other, a portion having welding marks, a portion having increased strength after welding, and the like.
  • the welded portion means to include the through-welded portion, and is preferably a through-welded portion.
  • the penetration welded portion means a welded portion formed by penetrating at least a part of the welded portion in the thickness direction (from the laser irradiation surface to the back surface side thereof).
  • the connecting member used in the present invention has a restraining portion for restraining a positional deviation in a facing-to-face arrangement state at the end portions of conductors arranged to face each other.
  • this connecting member Before joining, this connecting member is usually attached to the outside of the conductor end so as to surround the conductor end, and then is joined to the conductor end by a joining step. At this time, the connecting member restrains the positional deviation of the conductor end portion in the face-to-face arrangement state before and during the joining from the outside of the conductor end portion, and restrains the face-to-face arrangement state (constrained state) even after the joining.
  • the electric / electronic device connecting member of the present invention has a narrow or short joining allowance (welding allowance) that cannot be realized by the connecting member obtained by the conventional welding method. It is joined in the desired joining state (high strength and low resistance).
  • This connecting member may or may not change depending on the joining method, and in the welding method, at least a part thereof melts to form a welded portion together with the conductor.
  • the following peripheral walls of the connecting member described later may or may not be welded.
  • the welded portion contains a plating layer forming element such as tin (element) and is alloyed or solid-dissolved with a conductor forming material such as copper. To do.
  • the positional deviation of the conductor end portion constrained by the connecting member in the facing-to-face arrangement state includes the positional deviation of the conductor end portion in the direction intersecting the axis of the conductor end portion, and preferably the conductor end in the axial direction of the conductor end portion. Includes a misalignment of the part, more preferably both misalignments.
  • the positional deviation of the conductor end portions in the direction intersecting the axial direction of the conductor includes a positional deviation in which the facing distance between the conductor end portions increases (separates in the overlapping direction), and preferably the conductor end portions overlap each other. Includes a changing position (in the direction of intersection in the overlapping direction), more preferably both positions.
  • connection member has the above-mentioned misalignment restraint function due to the restraint portion provided on the connection member.
  • the connecting member may independently serve as a misalignment restraint portion, or may be provided with a misalignment restraint portion.
  • the connecting member itself also serves as a misalignment restraining portion, details will be described later.
  • a gap portion (bottomed hole) for accommodating a conductor end portion provided in the connecting member functions as a misalignment restraining portion. Aspects are mentioned.
  • the misaligned restraint portion attached to the connecting member is preferably provided on the connecting member corresponding to the confined portion provided at the end of the conductor, and the misaligned restraining portion attached to the connecting member is preferably provided.
  • the misalignment restraint function may be shown in cooperation with the restraint portion.
  • the shape of the joining base is not particularly limited as long as it has at least a function of joining the conductor ends to each other, and examples thereof include a shape having a surface in contact with the end face of the conductor ends.
  • the joint base is preferably set to a shape corresponding to the outer shape of the conductor ends arranged facing each other.
  • the specific shape of the joint base will be described in detail later with reference to the drawings, and examples thereof include a convex shape such as a substantially V shape or a substantially U shape, a frustum shape, or a flat plate shape.
  • the thickness of the joining base is set to a thickness that allows joining, and is appropriately set according to the welding method or conditions, the material of the joining base, and the like. For example, when welding, it can be 0.1 to 10 mm.
  • the thickness of the joint base means the shortest distance from the welding start point to the end of the conductor, and does not necessarily match the thickness of the joint base itself.
  • the laser is irradiated from the direction along the axial direction of the conductor, it means the thickness along the laser irradiation direction and coincides with the thickness in the direction along the axial direction of the conductor.
  • the hem portion constituting the connecting member has a misalignment restraint function when the connecting member itself also serves as a misalignment restraint portion, while the hem portion has a misalignment restraint function when the misalignment restraint portion is separately provided. It does not have to be, but it is preferable to have it.
  • the position deviation restraint function of the hem restrains the movement (positional deviation) of the conductor end in the direction intersecting the axial direction of the conductor end by contacting the inner peripheral surface with the side surface of the conductor end. Further, the movement of the conductor end portion in the axial direction is restrained (for example, by frictional force).
  • the hem is preferably a wall-shaped portion that hangs down from the edge of the joint base, and may be a peripheral wall that goes around along the edge of the joint base, and is a leg wall provided at intervals at the edge of the joint base. There may be.
  • the misaligned restraint portion attached to the connecting member is not particularly limited as long as it performs the misalignment restraint function, but is locked (including engagement, screwing, etc.) with the restrained portion provided at the end of the conductor. Therefore, a structure capable of restraining the facing arrangement state of the conductor end portions is preferable. Positional deviation By locking the restrained portion and the restrained portion, the positional deviation in the face-to-face arrangement state can be effectively restrained, and the restrained state is maintained unless the locking is released.
  • the position deviation restraining portion and the restrained portion are not particularly limited as long as they have a structure in which the positioning deviation of the conductor end portion can be constrained by locking the two, and includes, for example, a convex portion (protruding portion, step portion, etc.). ) And recesses (including steps).
  • the misalignment restraint portion and the conductor end portion may have either a convex portion or a concave portion, and may have both.
  • an inner protruding portion as a misaligned restraint portion provided on the inner peripheral surface of the hem portion of the connecting member (for example, reference numeral 32 or 34 in FIGS. 4 and 5).
  • a flange for example, reference numeral 31 in FIG. 4 or a groove portion (for example, reference numeral 33 in FIG. 5) as a restrained portion provided on the side surface of the conductor end portion, and provided on the inner peripheral surface of the hem portion of the connecting member.
  • a combination of, for example, a thread-like unevenness as a portion for example, reference numeral 36 in FIG. 6) and, for example, a screw groove-like unevenness as a restrained portion provided on the side surface of the conductor end portion (for example, reference numeral 35 in FIG. 6). And so on.
  • the above-mentioned connecting member has been described as a connecting member having an integral structure having a joining base portion and a hem portion, but in the present invention, the connecting member is not limited to the one having an integral structure.
  • a connecting member including the above-mentioned joining base portion (which does not have a hem portion) and an annular member which is configured as a separate body from the joining base portion and corresponds to the hem portion can be mentioned. ..
  • the inner shape and inner dimension (inner diameter) of the annular member are the same as the outer diameter and outer diameter (outer diameter) of the conductor ends arranged facing each other. Further, the inner surface of the annular member may have the above-mentioned non-restraint portion.
  • the connecting member is made of a material that can be joined to the conductor, and is usually made of various metals. It is preferably made of a weldable metal, more preferably made of the same material as the conductor. For example, it is more preferable that all of them are formed of the above-mentioned high-purity copper (oxygen-free copper or oxygen-free copper for electron tubes). Thereby, the welding strength can be increased. Further, since it is possible to suppress the generation of blow holes (spherical cavities or pores) due to the oxygen content and the resin member during welding, the electrical resistance of the welded portion can be lowered. Further, by forming the connecting member with the same material as the conductor, there is no difference in melting point between the conductor and the connecting member at the time of welding, and it is possible to weld firmly to any of them.
  • the end faces of the connecting member and the conductor end is welded to at least the surface to be welded (the end face of the conductor end, the surface of the connecting member in contact with the end face).
  • a layer (not shown) containing a material for improving the above.
  • a material for example, when the connecting member and the conductor are formed of copper or a copper alloy, tin is preferably mentioned.
  • the tin layer may not form a layer as long as tin is present on the surface to be welded, but it is preferably a tin-plated layer.
  • the tin layer preferably has a thickness of 0.1 to 5 ⁇ m, more preferably 0.3 to 3 ⁇ m, from the viewpoint of improving the tensile strength.
  • the thickness of the tin layer By setting the thickness of the tin layer within the above range, it is possible to have good tensile strength.
  • the tin layer is attached too thick, segregation is likely to occur at the molten portion, which becomes the starting point of cracks, and as a result, the tensile strength decreases.
  • the member for electric / electronic equipment As the member for electric / electronic equipment, as described above, an insulated electric wire material is preferable. The details will be described later. At least the ends of the conductors of the members for electrical and electronic devices are arranged facing each other regardless of the cross-sectional shape, as will be described later.
  • the mode of the face-to-face arrangement is not particularly limited and is appropriately determined according to the application and the like, but at least the conductor ends may be arranged so as to face each other and are aligned in the axial direction (parallel to the axial direction). It may be an arrangement.
  • the lengths facing in parallel can be shortened (the joint allowance can be narrowed) even if they are arranged in parallel in the axial direction.
  • the number of members for electrical / electronic devices arranged facing each other is appropriately set according to the application and the like, and is not particularly limited.
  • the number may be 2 to 6, preferably 2 or 3.
  • 3 to 7 are views showing a cross section of each electric / electronic device joining member as viewed from the same direction as in FIG.
  • All of the following electrical / electronic device connecting members appropriately emit laser light emitted from the outside of the connecting member along the axial direction of the conductor end (from above the connecting member toward the conductor end).
  • the end face of the conductor end is irradiated while being swept (scanned) in the direction perpendicular to the axial direction via the connecting member, and at least a part of the end face of the conductor end is welded to the connecting member.
  • these electric / electronic device connecting members have a narrow or short welding allowance that cannot be realized by the connecting member obtained by the conventional welding method, and the electric / electronic device member and the connecting member can be connected to each other. It is joined in the desired joining state (high strength and low resistance).
  • FIG. 1 is a schematic front view showing the vicinity of the joint portion of the conductor end portion
  • FIG. 2 is a schematic view showing a cross section taken along the line AA in FIG. 1 and showing a joint state between the conductor end portion and the connecting member. It is a sectional view.
  • the electrical / electronic device connecting member 1 includes a connecting member 20A that also serves as a misalignment restraining portion by itself.
  • the electrical / electronic device connecting member 1 has two flat insulated electric wire materials 10A and a connecting member 20A, and the end portion of the insulating electric wire material 10A and the connecting member 20A are connected to each other.
  • the conductor insulating layer (not shown in FIGS. 1 and 2) and the outer peripheral insulating layer 14 in the vicinity of the end of the single-core conductor 16 are removed (peeled) in advance, and the ends thereof are removed. It is bent by bending, and the vicinity of the conductor ends are arranged facing each other. As shown in FIG. 2, the ends of the single-core conductor 16 are separated from each other when viewed from a direction perpendicular to the facing direction (overlapping direction), but may be in contact with each other in the present invention.
  • a connecting member 20A is attached and joined to the outside of the two conductor end portions arranged so as to face each other so as to normally surround (surround) the conductor end portions.
  • the details of the connecting member are as described above, but the connecting member 20A has a prismatic block shape as shown in FIGS. 1 and 2, and has a bottomed hole (recessed portion) along the axis thereof.
  • the bottomed hole 21 has a bottom portion 22a corresponding to the above-mentioned joint base portion and a peripheral wall (corresponding to the above-mentioned hem portion) 23a that hangs down from the edge of the bottom portion 22a and is continuous in the circumferential direction, and faces each other.
  • the bottom portion 22a and the ends of both conductors (through) are welded.
  • the peripheral wall 23a may or may not be welded to the end of the conductor.
  • the connecting member 20A is attached to the conductor end portions arranged facing each other, and the conductor end portion is housed in the bottomed hole 21. As a result, before and during welding, the bottom surface of the bottomed hole 21 comes into contact with both conductor end portions (end faces), and the inner peripheral surface of the peripheral wall 23a comes into contact with (closely) the side surfaces of both conductor end portions.
  • the outer peripheral insulating layer covering the conductor is provided directly or indirectly (via another layer) on the outer peripheral surface of the conductor.
  • Examples of the other layer include an adhesive layer and the like.
  • This outer peripheral insulating layer has high adhesion strength to the conductor, and at least one layer is provided on the outside of the conductor.
  • the number of layers may be one layer or a plurality of layers.
  • the melting point of the thermoplastic resin can be measured by differential scanning calorimetry (DSC).
  • the thermoplastic resin is not particularly limited as long as it is a thermoplastic resin usually used for electric wires. Examples thereof include polyetheretherketone (PEEK), modified polyetheretherketone (modified-PEEK), thermoplastic polyimide (TPI), polyamide having an aromatic ring (referred to as aromatic polyamide), and polyketone (PK).
  • PEEK polyetheretherketone
  • modified-PEEK modified polyetheretherketone
  • TPI thermoplastic polyimide
  • aromatic polyamide polyamide having an aromatic ring
  • PK polyketone
  • a polyetherketone (PEK) a polyaryletherketone (PAEK) which is a thermoplastic resin containing an aromatic ring represented by a polyetheretherketone, an ether bond, and a ketone bond can also be used.
  • PAEK polyaryletherketone
  • the outer peripheral insulating layer is not limited to extrusion molding, and can be formed in the same manner as the enamel layer by using a varnish containing the above-mentioned thermoplastic resin, a solvent and the like, and if necessary, various additives.
  • the outer peripheral insulating layer is preferably formed by extrusion molding from the viewpoint of productivity.
  • a connecting member having a misalignment restraint portion of the conductor end portion is attached to a conductor end portion arranged facing each other of the electrical / electronic device member, and then the conductor end portion. It can be manufactured by a method of joining a connecting member and a connecting member.
  • the facing arrangement of the conductor ends can be fixed at the time of joining or during joining, so that the conductors arranged facing each other of the members for electrical / electronic devices can be fixed.
  • the conductors can be joined with high strength and low resistance. Further, since the joining allowance can be narrowed, the manufactured electric / electronic device connecting member can contribute to the miniaturization and high performance of the mounted electric / electronic device. Furthermore, if a welding method, particularly high-power fiber laser welding, is adopted as the joining method, the welding allowance can be further narrowed while suppressing deterioration of the insulating layer such as the insulated wire material, and the strength and low resistance are high. It is possible to further reduce the size and improve the performance of electrical and electronic equipment while achieving both standards.
  • the stripping method of the insulated wire material can be applied without any particular limitation to the usual method.
  • the conductor insulating layer between the divided conductors in the multi-core conductor is usually not peeled off and remains, so it is preferable to apply the fiber laser welding method described later.
  • the fiber laser is usually irradiated from a connecting member mounted on the conductor end toward the conductor end, and the connecting member and the conductor end are melt-mixed and penetrate-welded.
  • the irradiation direction of the fiber laser is not particularly limited, but the irradiation is performed from the axis of the conductor end or the axis direction of the connecting member toward the connecting member.
  • the irradiation of the fiber laser may be spot irradiation, or the fiber laser may be continuously or intermittently swept (scanned) along the direction perpendicular to the axis to irradiate linearly or planarly.
  • the connecting member and the vicinity of the end face of the conductor end are melted, solidified, and integrated from the laser beam irradiation surface (the surface of the connecting member) to the opposite back surface, thereby joining.
  • the joining is usually performed between the conductor end portion and the joining base portion of the connecting member, but a portion other than the conductor end portion and the joining base portion, for example, the hem portion can also be joined.
  • the joint between the conductor end portion and the hem portion is performed as a temporary joint for reinforcing the positional deviation restraining function by the connecting member, and the joint between the conductor end portion and the joint base portion is the main joint.
  • the coil 40 shown in FIG. 9 is an example in which an insulated electric wire material having a multi-core conductor is used as the electrical / electronic device connecting member of the present invention.
  • the coil 40 is formed by winding the insulated wire material 10F of the present invention one or more times in a groove 42 formed in the core 41.
  • the insulated wire material 10F used for the coil 40 as an electrical / electronic device connecting member is made by laminating three divided conductors 11 having a conductor insulating layer 12 covering the outer periphery.
  • a coil used for a stator of a rotary electric machine or the like can be mentioned as a coil in which a predetermined portion is electrically connected after bending this insulated electric wire material.
  • a coil for example, as shown in FIGS. 10 and 11, a plurality of electric wire segments 54 are produced by bending a short insulated electric wire material into a U shape or the like. Then, a coil 53 (see FIG. 11) formed by alternately connecting (welding) two open end portions 54a such as a U-shape of each electric wire segment 54 can be mentioned.
  • the stator core 51 and the electric wire segment 54 made of the members for electrical and electronic devices of the present invention are incorporated into the slot 52 of the stator core 51, for example, as shown in FIG. Then, the open end portion 54a is electrically connected to form the coil 53 (see FIG. 11).
  • the electric wire segment 54 may be incorporated into the slot 52 as a single wire, but is preferably incorporated as a set of two wires as shown in FIG.
  • a coil 53 formed by alternately connecting open ends 54a, which are two ends of the electric wire segment 54 bent as described above, is housed in a slot 52 of the stator core 51.
  • the open end portion 54a of the electric wire segment 54 may be connected and then stored in the slot 52, or the insulated segment 54 may be stored in the slot 52 and then the open end portion 54a of the electric wire segment 54 is bent. May be connected.
  • the connection of the open end portion 54a is performed by the above-mentioned manufacturing method of the present invention, particularly fiber laser welding, in which a connecting member is attached to the open end portion 54a (conductor end portion) arranged facing each other and joined.
  • a die having a shape similar to that of the single-core conductor 16 was used to coat the outer periphery of the single-core conductor 16 with PEI varnish.
  • the single-core conductor 16 coated with PEI varnish was passed through a baking oven having a furnace length of 8 m set at 450 ° C. at a speed of a baking time of 15 seconds.
  • the PEI varnish was prepared by dissolving PEI (manufactured by Savik Industrial Plastics, trade name: Ultem 1010) in N-methyl-2-pyrrolidone (NMP).
  • NMP N-methyl-2-pyrrolidone
  • a polyetherimide layer having a thickness of 3 ⁇ m was formed in the baking step. In this way, a single-core conductor 16 (enamel wire) whose outer peripheral surface was covered with a conductor insulating layer 12 having a film thickness of 3 ⁇ m was obtained.
  • thermoplastic resin of the outer peripheral insulating layer 14 polyetheretherketone (PEEK: manufactured by Solvay Specialty Polymers, trade name: Ketaspire KT-820, relative permittivity 3.1, melting point 343 ° C.) was used. After extrusion coating of polyetheretherketone was performed using an extrusion die, the mixture was allowed to stand for 10 seconds and then cooled with water. In this way, an outer peripheral insulating layer 14 having a thickness of 50 ⁇ m is formed on the outer periphery of the conductor insulating layer 12, and an insulated wire material having a cross-sectional size of 3.77 mm (width) ⁇ 2.23 mm (height) and a length of 30 cm. 10A was obtained. Further, the outer peripheral insulating layer 14 and the conductor insulating layer 12 coated on the outer periphery of the single-core conductor 16 up to 10 mm from one end surface of the insulated wire material were removed.
  • PEEK manufactured by Solvay Specialty Polymers,
  • the positional deviation of each of the single-core conductors 16 in the axial direction is restrained. Further, it functions as a positional deviation restraining portion that restrains the positional deviation of the conductor end portion in the direction in which the inner peripheral surface of the peripheral wall 23a intersects the axis of the conductor end portion. Specifically, the inner peripheral surface is in contact with the side surface of the end portion of the single-core conductor 16 arranged to face each other, and the positional deviation in the axial direction of each of the single-core conductor 16 is restrained.
  • the conductor ends are welded to each other (via the connecting member 20A) by irradiating and welding the connecting member 20A from the outside in the axial direction toward the connecting member 20A by irradiating a fiber laser.
  • An electric / electronic device connecting member 1 made of the insulated electric wire material 10A of the above was manufactured.
  • the fiber laser welding conditions are as follows.
  • Example 5 and 6 Electrical / electronic device connecting members of Examples 5 and 6 in the same manner as in Examples 1 or 2 except that a tin layer plated to a thickness of 1 ⁇ m was used on the inner surface of the bottom portion 22a of the connecting member 20A. I got 1.
  • Example 7 The insulated wire material 10A and the connecting member 20A produced in Example 1 were joined with a conductive adhesive: TK paste CR-2800 (trade name, manufactured by Kaken Tech Co., Ltd.). That is, a conductive adhesive was applied to the terminal portion, and then a connecting member was covered and cured at 120 ° C. for 30 minutes.
  • TK paste CR-2800 trade name, manufactured by Kaken Tech Co., Ltd.
  • Comparative Example 1 With the face-to-face state fixed in this way, the electrical / electronic device connection member of Comparative Example 1 was manufactured by irradiating with a laser in the same manner as in Example 1 (same laser welding conditions).
  • Comparative Example 2 In the same manner as in Example 1, after producing the insulated wire material 10A of 30 cm, the outer peripheral insulating layer 14 and the conductor insulating layer 12 coated on the outer periphery of the single core conductor 16 from one end surface of the insulated wire material 10A to 10 mm are formed. Removed.
  • the electricity and electronics of Comparative Example 2 are the same as in Example 1 except that the fiber laser is directly irradiated to the end of the conductor (without attaching the connecting member) with the insulated wire material 10A arranged face-to-face.
  • Manufactured equipment connection members in order to prevent the occurrence of blow holes and the like due to the presence of both insulating layers, the laser beam output was set to 30 W and the irradiation time was set to 10 seconds.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
PCT/JP2020/033194 2019-09-27 2020-09-02 電気・電子機器接続部材及びその製造方法、並びに、コイル及び電気・電子機器 WO2021059903A1 (ja)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06507756A (ja) * 1991-06-03 1994-09-01 シーメンス アクチエンゲゼルシヤフト コイルの巻き線をターミナルに接続する溶接法、および該溶接法に使用する金属製のスリーブ
JP2000350422A (ja) * 1999-03-30 2000-12-15 Denso Corp 回転電機の製造方法

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JP2002298995A (ja) * 2001-03-30 2002-10-11 Jst Mfg Co Ltd 樹脂ハンダを用いた同軸ケーブルの結束部材及び同軸ケーブルの電気コネクタ並びに結束部材の同軸ケーブル又は電気コネクタへの接続方法
JP2010044887A (ja) * 2008-08-11 2010-02-25 Autonetworks Technologies Ltd ワイヤーハーネスおよびその製造方法ならびに絶縁電線の接続方法
JP6622961B2 (ja) * 2014-05-19 2019-12-18 古河電気工業株式会社 電線接続構造体および電線接続方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06507756A (ja) * 1991-06-03 1994-09-01 シーメンス アクチエンゲゼルシヤフト コイルの巻き線をターミナルに接続する溶接法、および該溶接法に使用する金属製のスリーブ
JP2000350422A (ja) * 1999-03-30 2000-12-15 Denso Corp 回転電機の製造方法

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