WO2021059903A1 - Electric/electronic device connection member and manufacturing method therefor, coil, and electric/electronic device - Google Patents

Electric/electronic device connection member and manufacturing method therefor, coil, and electric/electronic device 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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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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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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/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus 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
    • H01F41/02Apparatus 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
    • H01F41/04Apparatus 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00Coils
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/02Soldered or welded connections
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00Electrically-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
    • H01R4/22End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02Apparatus 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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Abstract

Provided are: an electric/electronic device connection member obtained by joining conductor end portions, of electric/electronic device members, arranged to face each other, and a connecting member having a part for restraining displacement of the conductor end portions in a facing arrangement state; a manufacturing method for the electric/electronic device connection member, the method comprising attaching, to the conductor end portions arranged to face each other, the connecting member having the part for restraining displacement of the conductor end portions, and then joining the conductor end portions and the connecting member; and a coil and an electric/electronic device that use the electric/electronic device connection member.

Description

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Electrical / electronic device connection members and their manufacturing methods, as well as coils and electrical / electronic devices
 本発明は、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・電子機器に関する。 The present invention relates to an electric / electronic device connecting member, a method for manufacturing the same, and a coil and an electric / electronic device.
 電気・電子機器に用いられる部材(電気・電子機器用部材)は、その作製に際して、更に電気・電子機器への実装等に際して、導体(例えば、絶縁電線材の導体、端子、バスバーリングが挙げられる。)同士が電気的に接合される。
 電気・電子機器用部材の接合方法は、接合する部材や電気・電子機器への実装位置等に応じて適切な方法が適用され、例えば、導体同士を突き合わせて接合(溶接)する方法、導体同士を対面配置して接合(溶接)する方法等が挙げられる。中でも、電気・電子機器の小型化、また接合部の強度向上に資する点で、導体同士を、溶接可能な近傍、通常対面配置(接触(重ね合わせ)及び非接触を問わない)して、接合、好ましくは溶接する方法が多用される。
 従来、この導体同士を対面配置して溶接する方法では、通常、溶接前若しくは中に対面配置状態が損なわれないように保持機構により対面配置状態を保持したうえで直接溶接する。このような溶接方法が例えば特許文献1に記載されている。
Examples of the member used for the electric / electronic device (member for the electric / electronic device) include a conductor (for example, a conductor, a terminal, and a bus burring of an insulated electric wire material) when manufacturing the member and mounting the member on the electric / electronic device. .) They are electrically joined together.
As a method for joining members for electrical / electronic equipment, an appropriate method is applied according to the member to be joined, the mounting position on electrical / electronic equipment, etc. For example, a method of abutting conductors with each other and joining (welding) conductors with each other. Examples include a method of arranging and joining (welding) face-to-face. Above all, in order to contribute to the miniaturization of electrical and electronic equipment and the improvement of the strength of the joint, 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). , Preferably a welding method is often used.
Conventionally, in the method of arranging and welding the conductors facing each other, usually, 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.
特開2000-350422号公報Japanese Unexamined Patent Publication No. 2000-350422
 上述の従来の溶接方法では、溶接時に付与する熱エネルギーが導体を保持している保持機構に伝播するため、導体同士を所期の溶接状態となるように溶接するには、付与する熱エネルギーを溶接に必要なエネルギーよりも過剰に付与する必要がある。そのため、絶縁電線材等の、樹脂部材を有する電気・電子機器用部材を溶接する場合、過剰に付与した熱エネルギーが導体を介して伝播した樹脂部材(絶縁電線材の絶縁被覆層)を劣化させ、また溶接部に樹脂部材が残存しているとブローホール等が発生するという問題が生じる。ブローホールの発生は、溶接強度の低下や電気抵抗の上昇を招来することになる。そこで、通常の溶接方法では、上記問題を回避するために、対面配置させる導体の対面面積、通常対面長さ(溶接代、結果的に溶接領域)を大きくして、熱エネルギーの樹脂部材までの伝播を抑制している。
 しかし、近年、電気・電子機器の小型化、高性能化等は急速に進展しており、溶接代を大きく設定する必要のある従来の溶接方法では十分に対応できない。
In the above-mentioned conventional welding method, 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. Therefore, in the normal welding method, in order to avoid the above problem, 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.
However, in recent years, 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.
 本発明は、導体同士を高強度かつ低抵抗で接合することができ、しかも電気・電子機器の小型化、高性能化等の要求に応えうる、電気・電子機器接続部材、及びその製造方法を提供することを課題とする。また、この電気・電子機器接続部材を用いたコイル、及びこのコイルを用いた電気・電子機器を提供することを課題とする。 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.
 本発明者らは、対面配置させた導体同士を溶接により接合する方法において、導体同士を直接溶接するのではなく、対面配置させた導体の端部(導体端部ともいう。)に接続用部材を装着して、接続用部材の位置ズレ拘束部により導体端部における対面配置状態の位置ズレを拘束(対面配置状態を固定)した状態で、この接続用部材ごと溶接することにより、導体端部同士、更には導体端部と接続用部材とを高い溶接強度で電気抵抗の上昇を抑えて溶接(接合)できることを見出した。また、接合方法として溶接に限らず、導電性接着剤等を用いた接合方法であっても、上記接続用部材を用いることにより、対面配置状態の位置ズレを拘束でき、所期の接合が可能となることを見出した。しかも、接続用部材を装着して導体端部を拘束できることにより、従来の溶接方法及び溶接装置に必須の保持機構を不要とすることができ、又は導電性接着剤等を用いた接合方法を採用することにより、保持機構の使用による上記問題を解消して、接合代(溶接代)を要求レベルに応じて狭小化ないしは短小化(以下、単に狭小化という。)しても、所期の接合状態(高強度及び低抵抗)を実現できることを見出した。
 本発明は上記知見に基づき更に検討を重ね、完成されるに至ったものである。
In the method of joining conductors arranged facing each other by welding, the present inventors do not directly weld the conductors to each other, but connect members to the ends of the conductors arranged facing each other (also referred to as conductor ends). Is attached, and the conductor end portion is welded together with the connecting member in a state where the positional deviation of the facing arrangement state at the conductor end is constrained by the positional deviation restraining portion of the connecting member (the facing arrangement state is fixed). It has been found that it is possible to weld (join) each other, and further, the end of the conductor and the connecting member with high welding strength while suppressing an increase in electrical resistance. Further, 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. I found that Moreover, by attaching 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.
 すなわち、本発明の上記課題は、以下の手段によって解決された。
<1>対面配置した、電気・電子機器用部材の導体端部と、前記導体端部における対面配置状態の位置ズレ拘束部を有する接続用部材とが接合された電気・電子機器接続部材。
<2>前記位置ズレ拘束部が導体の軸線方向に交差する方向への前記導体端部の位置ズレを拘束する、<1>に記載の電気・電子機器接続部材。
<3>前記位置ズレ拘束部が導体の軸線方向への前記導体端部の位置ズレを拘束する、<1>又は<2>に記載の電気・電子機器接続部材。
<4>前記接続用部材が前記導体端部の外側に装着されている、<1>~<3>のいずれか1項に記載の電気・電子機器接続部材。
<5>前記導体端部が前記位置ズレ拘束部と係止する被拘束部を有する、<1>~<4>のいずれか1項に記載の電気・電子機器接続部材。
<6>前記接続用部材が単一部材又は複数の部材で構成されている、<1>~<5>のいずれか1項に記載の電気・電子機器接続部材。
<7>前記接続用部材が、前記導体端部と接合する接合基部と、前記接合基部の端縁から前記導体端部の側面に沿ってその軸線方向に延在する裾部とを有する、<1>~<6>のいずれか1項に記載の電気・電子機器接続部材。
<8>前記接続用部材がレーザ溶接により前記導体端部と接合されている、<1>~<7>のいずれか1項に記載の電気・電子機器接続部材
<9>上記<1>~<8>のいずれか1項に記載の電気・電子機器接続部材の製造方法であって、
 電気・電子機器用部材の対面配置された導体端部に、前記導体端部の位置ズレ拘束部を有する接続用部材を装着し、次いで、前記導体端部と前記接続用部材とを接合する、電気・電子機器接続部材の製造方法。
<10>前記導体端部と前記接続用部材とをレーザ溶接により接合する、<9>に記載の電気・電子機器接続部材の製造方法。
<11>上記<1>~<8>のいずれか1項に記載の電気・電子機器接続部材を有するコイル。
<12>上記<11>に記載のコイルを有する電気・電子機器。
That is, the above problem of the present invention has been solved by the following means.
<1> An electrical / electronic device connecting member in which a conductor end portion of an electrical / electronic device member arranged face-to-face and a connecting member having a positional deviation restraint portion in a face-to-face arrangement state at the conductor end portion are joined.
<2> The electrical / electronic device connecting member according to <1>, which constrains the positional deviation of the conductor end portion in a direction in which the positional deviation restraining portion intersects the axial direction of the conductor.
<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.
<7> 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.
<11> A coil having the electrical / electronic device connecting member according to any one of <1> to <8> above.
<12> An electrical / electronic device having the coil according to <11> above.
 本発明の電気・電子機器接続部材は、少なくとも導体端部同士が高強度かつ低抵抗で接合されており、しかも接合代の狭小化が可能となって電気・電子機器の小型化、高性能化等の要求に応えることができる。また、本発明のコイル及び電気・電子機器は、少なくとも導体端部同士が高強度かつ低抵抗で接合された電気・電子機器接続部材を備えており、電気・電子機器の小型化、高性能化を実現できる。更に、本発明の電気・電子機器接続部材の製造方法は、上述の優れた特性を示す電気・電子機器接続部材を製造できる。
 本発明の上記及び他の特徴及び利点は、適宜添付の図面を参照して、下記の記載からより明らかになるであろう。
In the electric / electronic device connecting member of the present invention, at least the conductor ends are joined with high strength and low resistance, and the joining allowance can be narrowed to reduce the size and performance of the electric / electronic device. It is possible to meet the demands such as. Further, the coil and the electric / electronic device of the present invention are provided with an electric / electronic device connecting member in which at least the conductor ends are joined with high strength and low resistance, so that the electric / electronic device can be miniaturized and have high performance. Can be realized. Further, the method for manufacturing an electric / electronic device connecting member of the present invention can manufacture an electric / electronic device connecting member exhibiting the above-mentioned excellent characteristics.
The above and other features and advantages of the present invention will become more apparent from the description below, with reference to the accompanying drawings as appropriate.
図1は、本発明の電気・電子機器接続部材の好ましい実施形態の一例について、導体端部の接合部近傍を示す概略正面図である。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. 図2は、図1におけるA-A線による断面を示す概略断面図である。FIG. 2 is a schematic cross-sectional view showing a cross section taken along the line AA in FIG. 図3は、本発明の電気・電子機器接続部材の別の好ましい実施形態の一例について、導体端部の接合部近傍を示す概略断面図である。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. 図4は、本発明の電気・電子機器接続部材のまた別の好ましい実施形態の一例について、導体端部の接合部近傍を示す概略断面図である。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. 図5は、本発明の電気・電子機器接続部材の更に別の好ましい実施形態の一例について、導体端部の接合部近傍を示す概略断面図である。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. 図6は、本発明の電気・電子機器接続部材の更にまた別の好ましい実施形態の一例について、導体端部の接合部近傍を示す概略断面図である。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. 図7は、本発明の電気・電子機器接続部材の別の好ましい実施形態の一例について、導体端部の接合部近傍を示す概略断面図である。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. 図8は、本発明の電気・電子機器接続部材に用いる絶縁電線材を示す断面図である。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. 図9は、本発明のコイルの好ましい実施形態の一例を示す概略部分断面図である。FIG. 9 is a schematic partial cross-sectional view showing an example of a preferred embodiment of the coil of the present invention. 図10は、本発明の電気・電子機器に用いられるステータの好ましい実施形態の一例を示した概略斜視分解図である。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. 図11は、本発明の電気・電子機器に用いられるステータの好ましい実施形態の一例を示した概略分解斜視図である。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.
[[電気・電子機器接続部材]]
 本発明の電気・電子機器接続部材(電気・電子機器用接続部材ともいう。)は、対面配置した、電気・電子機器用部材の導体端部と、この導体端部における対面配置状態の位置ズレ拘束部を有する接続用部材とが接合されて、形成されている。この電気・電子機器接続部材は、対面配置された導体端部及び接続用部材で電気・電子機器用部材が接合された部材であればよく、電気・電子機器への実装の有無は問わない。すなわち、本発明の電気・電子機器接続部材は、電気・電子機器用への実装前に接合されている部材だけでなく、電気・電子機器用への実装過程若しくは実装後に接合される部材をも包含する。
 本発明の電気・電子機器接続部材は、長尺状の部材(絶縁電線材)とすることもできるが、所定の長さの短尺状の部材とすることが好ましい。短尺状の部材の長さ(全長)は、用途等に応じて適宜に設定されるが、例えば、10~100cmとすることができる。このような短尺の部材は、回転電機のコイル実装用絶縁電線材として用いられることが好ましい。
 本発明の電気・電子機器接続部材は、接続用部材が導体端部の対面配置状態を拘束する拘束部を例えば内表面に有し、好ましくは導体(端部)が上記拘束部と係止(係合、螺合)する被拘束部を例えば外表面に有する電気・電子機器接続部材ということもできる。更に、この電気・電子機器用部材は、位置ズレ拘束部を有する接続用部材を用いて、導体同士が接続用部材で接合されているともいえる。
[[Electrical / electronic device connection member]]
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. That is, the electrical / electronic device connecting member of the present invention includes not only the members joined before mounting on the electrical / electronic device but also the members joined in the mounting process or after mounting on the electrical / electronic device. Include.
The electrical / electronic device connecting member of the present invention may be a long member (insulated electric wire material), but is preferably a short member having a predetermined length. The length (total length) of the short-shaped member is appropriately set according to the application and the like, but can be, for example, 10 to 100 cm. Such a short member is preferably used as an insulating electric wire material for mounting a coil of a rotary electric machine.
In the electrical / electronic device connecting member of the present invention, for example, 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.
 本発明において、電気・電子機器用部材とは、電気・電子機器に用いられる(実装される)部材であって、他の部材等と電気的に接合される部材をいう。例えば、絶縁電線材等の配線材、端子類、バスバー、バスバーリング、モータ・発電機の結線等が挙げられる。
 したがって、本発明の電気・電子機器接続部材は、1つ又は複数の電気・電子機器用部材が接合された部材であればよく、複数の配線材同士が接合された部材、配線材と端子若しくはバスバーリングとが接合された部材、更には複数の配線と接合部品が結線された部材を包含する。
In the present invention, 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. For example, 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.
 本発明において、位置ズレ拘束部(単に拘束部ということもある。)は、対面配置した導体端部(導体端部の対面配置状態)が相対的な位置ズレを起さない(変動しない)ように拘束(規制)した状態で、導体端部同士を保持若しくは支持(拘持)可能な構造部を意味し、拘束機構ともいう。この位置ズレ拘束部は、導体端部の対面配置状態において、導体端部の軸線に交差する方向への導体端部の位置ズレ、及び/又は導体端部の軸線方向への導体端部の位置ズレを拘束して、対面配置された導体端部同士を所定の対面配置状態に固定する。導体端部の軸線方向への導体端部の位置ズレを拘束する拘束部は対面配置された導体端部の端部(端面)に接して同方向への位置ズレ移動を規制し、導体端部の軸線に交差する方向への導体端部の位置ズレを拘束する拘束部は対面配置された導体端部の端部(側面)に接して同方向への位置ズレを規制する。
 本発明において、導体端部を対面配置するとは、複数の導体端部を接合可能な距離で互いに対面状態に配置する態様と、導体端部を接触させた状態に配置する態様との両態様を包含する。接合可能な距離は、導体(導体端部)のサイズ、接合方法等によって変動するため一義的ではないが、対面配置された導体端部同士の間隔として例えば0.5mm程度が挙げられる。導体端部を対面配置する方法は、特に制限されず、導体の配置状態、形状等を適宜変更することができ、導体を並べて少なくともその端縁近傍を対面状態に配置する方法、導体を曲げ加工等して少なくともその端縁近傍を対面状態に配置する方法、これらを併用する方法等が挙げられる。「対面配置」とは、導体端部が接合可能な状態に配置されていればよく、導体端部を並置した状態が好ましい。対面配置は、例えば、導体端部の離間距離、対面面積、軸線方向の位置(端面高さ)等を適宜設定して、行われる。例えば、対面配置される導体端部の対面面積は、電気・電子機器の小型化、高性能化等の程度、導体自体のサイズ、溶接方法若しくは条件に応じて適宜に決定され、例えば、20~250mmであることが好ましく、60~20mmであることがより好ましい。
 本発明において、対面配置される導体端部は、同一(1本又は1つ)の電気・電子機器用部材の両導体端部同士でもよいが、異なる(複数の)電気・電子機器用部材の各導体端部同士であることが好ましい。
In the present invention, 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. By restraining the deviation, 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.
In the present invention, 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. Include. 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. For example, 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. of the electric / electronic device, the size of the conductor itself, the welding method, or the conditions. It is preferably 250 mm 2 , more preferably 60 to 20 mm 2.
In the present invention, 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.
 本発明において、接合には、溶接(突き合わせ溶接、重ね溶接、スポット溶接等)に加えて、導電性接着剤、導電性接着シート等を用いた接着等を包含するが、接合部の接合強度及び電気抵抗の点で、溶接が好ましく、レーザ溶接がより好ましい。
 本発明において、接合は、接合する導体端部同士を接触させた状態、離間した状態、更には他の部材等を介した状態で、接合することを意味する。ただし、接触させた状態には、溶接性向上のため、溶融させる部材の表面に形成された、各種金属からなるめっき層等を介する態様を包含する。
 本発明において、電気・電子機器用部材と接続用部材とを溶接により接合する場合、溶接部が形成される。溶接部とは、導体及び接続用部材の材料が互いに溶融混合(合金化、固溶化等)してなる部分、溶接痕を有する部分、溶接後に高強度化した部分等を包含する。溶接部は、貫通溶接部を包含する意味であり、貫通溶接部であることが好ましい。ここで、貫通溶接部とは、溶接部の少なくとも一部が厚さ方向に(レーザ照射面からその裏面側まで)貫通して形成されている溶接部をいう。
In the present invention, 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.
In the present invention, 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. However, 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.
In the present invention, when a member for electrical / electronic equipment and a member for connection are joined by welding, 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. Here, 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).
[接続用部材]
 本発明に用いる接続用部材は、対面配置された導体端部における対面配置状態の位置ズレを拘束する拘束部を有している。この接続用部材が、接合前に、導体端部の外側に通常導体端部を包囲(囲繞)するように装着され、次いで接合工程により、導体端部と接合されている。このとき、接続用部材は、接合前及び接合中には導体端部の対面配置状態の位置ズレを導体端部の外側から拘束し、接合後もこの対面配置状態(拘束状態)を拘束する。
 本発明の電気・電子機器接続部材は、従来の溶接方法で得られる接続用部材では実現しえない狭小ないしは短小な接合代(溶接代)で、電気・電子機器用部材と接続用部材とが所期の接合状態(高強度及び低抵抗)で接合されている。この接続用部材は、接合方法によって変化してもしなくてもよく、溶接法では少なくとも一部が溶融して導体と共に溶接部を形成する。後述する接続用部材の下記周壁は溶接してもしなくてもよい。接続用部材又は導体端部に錫層等のめっき層を形成する場合、溶接部は、錫(元素)等のめっき層形成元素を含有し、例えば銅等の導体形成材料と合金化又は固溶する。
 接続用部材が拘束する導体端部の対面配置状態の位置ズレは、導体端部の軸線に交差する方向への導体端部の位置ズレを含み、好ましくは導体端部の軸線方向への導体端部の位置ズレを含み、より好ましくは両位置ズレを含む。ここで、導体の軸線方向に交差する方向への導体端部の位置ズレは、導体端部同士の対面距離が広がる(重なり方向に離間する)位置ズレを含み、好ましくは導体端部同士の重なりが変化する(重なり方向に交差する方向への)位置ズレを含み、より好ましくは両位置ズレを含む。
[Connecting member]
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. 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. When a plating layer such as a tin layer is formed on a connecting member or a conductor end, 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. Here, 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.
 接続用部材は、接続用部材に設けられた拘束部により、上述の位置ズレ拘束機能を有する。接続用部材は、自身が単独で位置ズレ拘束部を兼ねてもよく、位置ズレ拘束部が付設されてもよい。接続用部材自身が単独で位置ズレ拘束部を兼ね場合、詳細は後述するが、例えば、接続用部材に設けられる導体端部を収納する空隙部(有底孔)が位置ズレ拘束部として機能する態様が挙げられる。一方、接続用部材に付設される位置ズレ拘束部は、導体端部に設けられた被拘束部と対応して接続用部材に設けられることが好ましく、また接続用部材が、付設された位置ズレ拘束部と共同して位置ズレ拘束機能を示してもよい。 The 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. When the connecting member itself also serves as a misalignment restraining portion, details will be described later. For example, 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. On the other hand, 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.
 本発明に用いる接続用部材は、上述の位置ズレ拘束部を有し、導体端部の位置ズレを拘束可能な部材であれば、形状及び寸法について適宜に決定される。好ましくは、対面配置された導体端部を収納する空隙部を有する蓋形状(キャップ形状)等が挙げられる。具体的には、導体端部と接合される接合基部と、接合基部の端縁から導体端部の側面に沿ってその軸線方向に延在する裾部とを有する形状(蓋形状)が挙げられる。 The shape and dimensions of the connecting member used in the present invention are appropriately determined as long as the member has the above-mentioned misalignment restraining portion and can restrain the misalignment of the conductor end portion. A lid shape (cap shape) having a gap portion for accommodating the conductor end portions arranged facing each other is preferable. Specifically, a shape (lid shape) having 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 can be mentioned. ..
 接合基部は、導体端部同士を接合させる機能を有する。接続用部材自体が位置ズレ拘束部を兼ねる場合、接合基部は位置ズレ拘束機能を有し、一方、位置ズレ拘束部を別に設ける場合、接合基部は位置ズレ拘束機能を有していなくてもよいが、有していることが好ましい。接合基部の位置ズレ拘束部機能は、その底面が導体端部(端面)と接することによって、導体端部の軸線方向への導体端部の移動(位置ズレ)を拘束し、好ましくは両導体端部の側面に接することによって、導体端部の軸線方向に交差する方向への導体端部の移動(位置ズレ)を拘束する。
 接合基部は、少なくとも導体端部同士を接合する機能を有するものであれば、その形状は、特に制限されず、導体端部の端面と接する表面を有する形状が挙げられる。接合基部が更に位置ズレ拘束機能を有する場合、接合基部は、好ましくは、対面配置された導体端部からなる外形に対応する形状に設定される。接合基部の具体的な形状としては、詳細は図を参酌して後述するが、例えば、略V字若しくは略U字等の凸形状、錐台形状又は平盤状が挙げられる。
 接合基部の厚さは、接合可能な厚さに設定され、溶接方法若しくは条件、接合基部の材質等に応じて適宜に設定される。例えば、溶接する場合、0.1~10mmとすることができる。接合基部の厚さは、溶接する場合、溶接開始点から導体端部までの最短距離を意味し、必ずしも接合基部自体の厚さと一致しなくてもよい。例えば、レーザを導体の軸線方向に沿った方向から照射する場合、レーザ照射方向に沿う厚さをいい、導体の軸線方向に沿う方向の厚さと一致する。
The joining base has a function of joining the conductor ends to each other. When the connecting member itself also serves as a misalignment restraint portion, the joint base portion has a misalignment restraint function, while when a misalignment restraint portion is provided separately, the joint base portion does not have to have a misalignment restraint function. However, it is preferable to have it. The misalignment restraint function of the joint base restrains the movement (positional misalignment) of the conductor end in the axial direction by contacting the bottom surface with the conductor end (end face), preferably both conductor ends. By touching the side surface of the portion, the movement (positional deviation) of the conductor end portion in the direction intersecting the axial direction of the conductor end portion is restrained.
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. When the joint base further has a misalignment restraining function, 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. When welding, 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. For example, when 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.
 接続用部材を構成する裾部は、接続用部材自体が位置ズレ拘束部を兼ねる場合、位置ズレ拘束機能を有し、一方、位置ズレ拘束部を別に設ける場合、裾部は位置ズレ拘束機能を有していなくてもよいが、有していることが好ましい。裾部の位置ズレ拘束部機能は、その内周面が導体端部の側面と接することによって、導体端部の軸線方向に交差する方向への導体端部の移動(位置ズレ)を拘束し、更には導体端部の軸線方向への導体端部の移動を(例えば摩擦力により)拘束する。
 裾部は、接合基部の端縁から垂下する壁状部が好ましく、接合基部の端縁に沿って一巡する周壁であってもよく、接合基部の端縁に間隔をあけて設けられる脚壁であってもよい。
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.
 接続用部材に付設される位置ズレ拘束部は、位置ズレ拘束機能を奏する限り特に制限されないが、導体端部に設けられた被拘束部と係止(係合、螺合等を含む。)して、導体端部の対面配置状態を拘束可能な構造が好ましい。位置ズレ拘束部と被拘束部との係止により、対面配置状態の位置ズレを効果的に拘束できるうえ、係止を解除しない限り拘束状態が維持される。位置ズレ拘束部と被拘束部とは、両者が係止して導体端部の位置ズレを拘束できる構造であれば、特に制限されず、例えば、凸部(突出部、段差部等を含む。)と凹部(段差部等を含む。)との組み合わせが挙げられる。位置ズレ拘束部及び導体端部は凸部及び凹部のいずれを有していてもよく、両者とも有していてもよい。位置ズレ拘束部と被拘束部との組み合わせとしては、例えば、接続用部材の裾部内周面に設けられた位置ズレ拘束部としての内側突出部(例えば図4及び図5の符号32又は34)と、導体端部の側面に設けられた被拘束部としてのフランジ(例えば図4の符号31)若しくは溝部(例えば図5の符号33)との組み合わせ、また接続用部材の裾部内周面に設けられた位置ズレ拘束部としての粗面と、導体端部の側面に設けられた被拘束部としての粗面との組み合わせ、更には、接続用部材の裾部内周面に設けられた位置ズレ拘束部としての例えばネジ山状の凹凸(例えば図6の符号36)と、導体端部の側面に設けられた被拘束部としての例えばネジ溝状の凹凸との組み合わせ(例えば図6の符号35)等が挙げられる。 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. As a combination of the misaligned restraint portion and the confined portion, for example, 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). And 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. The combination of the rough surface as the provided misalignment restraint and the rough surface as the confined portion provided on the side surface of the conductor end, and the misalignment restraint provided on the inner peripheral surface of the hem 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.
 上述の接続用部材は、接合基部と裾部とを有する一体構造の接続用部材として説明したが、本発明において、接続用部材は一体構造のものに限定されない。例えば、図7に示すように、(裾部を有さない)上述の接合基部と、接合基部と別体として構成され、上記裾部に相当する輪環状部材とを含む接続用部材が挙げられる。輪環状部材の内形及び内側寸法(内径)は、対面配置された導体端部の外形及び外側寸法(外径)と一致している。また、輪環状部材の内面には、上述の非拘束部を有していてもよい。 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. For example, as shown in FIG. 7, 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.
 接続用部材は、導体と接合可能な材料で形成され、通常、各種金属で形成される。好ましくは溶接可能な金属で形成され、より好ましくは導体と同じ材質で形成される。例えば、いずれも上述の高純度銅(無酸素銅又は電子管用無酸素銅)で形成されることが更に好ましい。これによって、溶接強度を高めることができる。更には、溶接時に含有酸素や樹脂部材に起因するブローホール(球状の空洞ないし気孔)の発生を抑えることができるため、溶接部の電気抵抗を低くできる。また、導体と同じ材質で接続用部材を形成することにより、溶接時に導体及び接続用部材との間に融点差が生じず、いずれに対しても強固に溶接することができる。 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.
 接合を溶接で行う場合、接続用部材及び導体端部の端面の少なくとも一方は、少なくとも溶接される面(導体端部の端面、接続用部材の、端面と接する表面)に溶接作業性や溶接強度を向上させる材料を含有する層(図示せず)を有することが好ましい。このような材料としては、例えば、接続用部材及び導体を銅若しくは銅合金で形成する場合、錫が好ましく挙げられる。
 錫層は、溶接される面に錫が存在していれば層をなしていなくてもよいが、錫めっき層であることが好ましい。錫層は、引張強度の向上という観点から、好ましくは0.1~5μmの厚さを有し、より好ましくは0.3~3μmの厚さを有する。錫層の厚さを上記範囲とすることで、良好な引張強さを有することができる。一方、錫層を厚く付け過ぎると、溶融部で偏析しやすくなり、それがクラックの起点となり、結果的に引張強度が低下する。
When joining is performed by welding, at least one of 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). It is preferable to have a layer (not shown) containing a material for improving the above. As such 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 μm, more preferably 0.3 to 3 μm, from the viewpoint of improving the tensile strength. By setting the thickness of the tin layer within the above range, it is possible to have good tensile strength. On the other hand, if 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.
[電気・電子機器用部材]
 電気・電子機器用部材としては、上述の通りであり、絶縁電線材が好ましい。その詳細は後述する。
 電気・電子機器用部材の導体の少なくとも端部は、後述するように、断面形状に関わらず、対面配置される。対面配置の態様は、特に制限されず、用途等に応じて適宜に決定されるが、少なくとも導体端部同士が対面する配置であればよく、軸線方向に引き揃えられる(軸線方向に並列な)配置であってもよい。本発明においては、軸線方向に並列に配置するにしても並列対面する長さを短くできる(接合代を狭小化できる)点で好ましい。対面配置される電気・電子機器用部材の数は、用途等に応じて適宜に設定され、特に制限されない。例えば、2~6個とすることができ、2個又は3個が好ましい。
 なお、図3~図7は、各電気・電子機器用接合部材を図2と同じ方向から見た断面を示す図である。
[Members for electrical and 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. In the present invention, it is preferable that 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. For example, 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.
[電気・電子機器接続部材の好ましい形態]
 以下に、図を参照して、電気・電子機器接続部材の好ましい形態を具体的に説明する。
 下記の電気・電子機器接続部材は、いずれも、接続用部材の外側から導体端部の軸線方向に沿って(接続用部材の上方から導体端部に向けて)発射されるレーザ光を、適宜に接続用部材を介して軸線方向の垂直方向に掃引(走査)させつつ導体端部の端面に照射して、導体端部の端面の少なくとも一部が接続用部材に溶接されている。これらの電気・電子機器接続部材は、後述するように、従来の溶接方法で得られる接続用部材では実現しえない狭小ないしは短小な溶接代で、電気・電子機器用部材と接続用部材とが所期の接合状態(高強度及び低抵抗)で接合されている。
[Preferable form of electrical / electronic device connecting member]
Hereinafter, preferable forms of the electrical / electronic device connecting member will be specifically described with reference to the drawings.
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. As will be described later, 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).
 図1及び図2に、本発明の電気・電子機器接続部材の好ましい実施形態の一例を示す。図1は導体端部の接合部近傍を示す概略正面図であり、図2は図1におけるA-A線による断面を示すものであって導体端部と接続用部材との接合状態を示す概略断面図である。
 この電気・電子機器接続部材1は、自身が単独で位置ズレ拘束部を兼ねる接続用部材20Aを備えるものである。具体的には、電気・電子機器接続部材1は、2本の平型の絶縁電線材10Aと接続用部材20Aとを有しており、絶縁電線材10Aの端部と接続用部材20Aとが(一体的に)溶接され、接続用部材20Aを介して2本の絶縁電線材10A同士が溶接(電気的に接続)されている。
 絶縁電線材10Aは、それぞれ、単芯導体16の端部近傍の、導体絶縁層(図1及び図2において図示しない)及び外周絶縁層14が予め除去(皮むき)され、それらの端部が曲げ加工により屈曲されて、導体端部近傍同士が対面配置されている。図2に示されるように、単芯導体16の端部は、対面方向(重なり方向)に対して垂直な方向から見ると互いに離間しているが、本発明においては接触していてもよい。
 このように対面配置された2つの導体端部の外側に、通常導体端部を包囲(囲繞)するように、接続用部材20Aが装着され、接合されている。接続用部材の詳細は上述の通りであるが、接続用部材20Aは、図1及び図2に示されるように、角柱状のブロック形状をなし、その軸線に沿って有底孔(凹陥部)21を有している。この有底孔21は、上述の接合基部に対応する底部22aと、底部22aの端縁から垂下する、周方向に連続した周壁(上述の裾部に対応する)23aを有しており、対面配置された単芯導体16の端部に対応した形状及び寸法を有している。電気・電子機器接続部材1において、図1及び図2には溶接部を明確に図示しないが、底部22aと両導体端部と(貫通)が溶接されている。周壁23aは導体端部と溶接されていてもいなくてもよい。
 この接続用部材20Aは、対面配置された導体端部に装着され、この導体端部を有底孔21内に収納している。これにより、溶接前及び溶接中において、有底孔21の底面が両導体端部(端面)に接触し、かつ周壁23aの内周面が両導体端部の側面に接触(密接)して、導体端部の対面配置状態を規制し、かつ導体端部それぞれの軸線方向の位置ズレを拘束している。また、周壁23aの内周面は両導体端部の側面と接触していることにより、導体端部の対面配置状態を規制し、かつ導体端部同士の対面距離が広がる(図2の左右方向への)位置ズレ及び導体端部同士の重なりが変化する(図1の上下方向以外の方向への)位置ズレを拘束している。このように、接続用部材20Aを導体端部に装着することにより、上述の保持機構を用いなくても、導体端部の対面配置状態を拘束(維持)して接合できる。また、溶接後も同様に導体端部の対面配置状態を拘束して維持できる。そのため、電気・電子機器接続部材1は、溶接代が狭小化されていても、2本の絶縁電線材を所定の対面配置状態で高強度かつ低抵抗で接合されている。
1 and 2 show an example of a preferred embodiment of the electrical / electronic device connecting member of the present invention. FIG. 1 is a schematic front view showing the vicinity of the joint portion of the conductor end portion, and 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. Specifically, 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. It is welded (integrally), and two insulated wire members 10A are welded (electrically connected) to each other via a connecting member 20A.
In the insulated wire material 10A, 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. Has 21. 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. It has a shape and dimensions corresponding to the ends of the arranged single-core conductor 16. In the electrical / electronic device connecting member 1, although the welded portion is not clearly shown in FIGS. 1 and 2, 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. It regulates the facing arrangement of conductor ends and restrains the positional deviation of each conductor end in the axial direction. Further, since the inner peripheral surface of the peripheral wall 23a is in contact with the side surfaces of both conductor end portions, the facing arrangement state of the conductor end portions is regulated, and the facing distance between the conductor end portions is widened (left-right direction in FIG. 2). (To) and the overlap between the conductor ends are changed (to a direction other than the vertical direction in FIG. 1). By mounting the connecting member 20A on the conductor end portion in this way, the facing arrangement state of the conductor end portion can be constrained (maintained) and joined without using the holding mechanism described above. Further, even after welding, the facing arrangement state of the conductor end portion can be restrained and maintained in the same manner. Therefore, in the electric / electronic device connecting member 1, even if the welding allowance is narrowed, two insulated wire materials are joined in a predetermined face-to-face arrangement state with high strength and low resistance.
 図3に示す電気・電子機器接続部材2は、2本の絶縁電線材10Bの端部形状、及び接続用部材20Bの形状が異なること以外は、電気・電子機器接続部材1と同じであり、自身が単独で位置ズレ拘束部を兼ねる接続用部材20Bを備えている。
 すなわち、絶縁電線材10Bは、端部がそれぞれ端部方向に向かって徐々に厚さが薄くなるように(厚さ方向にテーパ状に)形成されている単芯導体17を有すること以外は、絶縁電線材10Aと同じである。また、導体端部の対面配置は、図3に示されるように2本の単芯導体17が導体端部全体としても軸線延長方向に向かって先細形状になっていること以外は、絶縁電線材10Aの対面配置と同じである。
 接続用部材20Bは、その外形及び有底孔の形状が異なること以外は、接続用部材20Aと同じである。すなわち、接続用部材20Bの周壁23bは周壁23aと同じである。有底孔21の形状は、対面配置された絶縁電線材10Bの端部が形成する形状に対応する形状に形成されている。具体的には、底部22bは、底部22aのように全体に亘って平坦な盤状ではなく、図3に示す断面形状が軸線方向に向かって略台形になっている。接続用部材20Bの軸線方向に沿う底部22bの厚さは略一定である。なお、いうまでもないが、接続用部材20Bの外形が接続用部材20Aと異なるのは側面視した場合であり、図1のように正面視した場合の外形は接続用部材20Aと同じである。接続用部材20Bは、接続用部材20Aと同様に、底部22bと両導体端部とが溶接され、溶接前、溶接中及び溶接後のいずれにおいても、導体端部の対面配置状態を拘束している。
 電気・電子機器接続部材2は、導体端部がテーパ状に形成されており、底部22bとの接触面積(溶接面積)を大きくできるため、更に強固な溶接強度を達成できる。
The electrical / electronic device connecting member 2 shown in FIG. 3 is the same as the electrical / electronic device connecting member 1 except that the shape of the ends of the two insulated wire members 10B and the shape of the connecting member 20B are different. It is provided with a connecting member 20B that also serves as a misalignment restraining portion by itself.
That is, the insulated wire material 10B has a single-core conductor 17 whose ends are formed so as to gradually decrease in thickness toward the ends (tapered in the thickness direction). It is the same as the insulated wire material 10A. Further, the facing arrangement of the conductor ends is such that the two single-core conductors 17 are tapered in the direction of extending the axis even as the entire conductor ends, as shown in FIG. It is the same as the face-to-face arrangement of 10A.
The connecting member 20B is the same as the connecting member 20A except that the outer shape and the shape of the bottomed hole are different. That is, the peripheral wall 23b of the connecting member 20B is the same as the peripheral wall 23a. The shape of the bottomed hole 21 is formed in a shape corresponding to the shape formed by the end portions of the insulating electric wire material 10B arranged facing each other. Specifically, the bottom portion 22b does not have a flat plate shape as a whole like the bottom portion 22a, but the cross-sectional shape shown in FIG. 3 is substantially trapezoidal in the axial direction. The thickness of the bottom portion 22b of the connecting member 20B along the axial direction is substantially constant. Needless to say, the outer shape of the connecting member 20B is different from that of the connecting member 20A when viewed from the side, and the outer shape when viewed from the front as shown in FIG. 1 is the same as that of the connecting member 20A. .. Similar to the connecting member 20A, the connecting member 20B has the bottom portion 22b and both conductor ends welded to each other, and restrains the facing arrangement state of the conductor ends before, during, and after welding. There is.
Since the conductor end portion of the electrical / electronic device connecting member 2 is formed in a tapered shape and the contact area (welding area) with the bottom portion 22b can be increased, a stronger welding strength can be achieved.
 図4に示す電気・電子機器接続部材3は、絶縁電線材10Cの端部形状、及び接続用部材20Cの形状、更には位置ズレ拘束機能が異なること以外は、電気・電子機器接続部材2と同じである。この電気・電子機器接続部材3は、付設された位置ズレ拘束部とともに、自身も位置ズレ拘束部を兼ねる接続用部材20Cを備えている。
 すなわち、絶縁電線材10Cは、それぞれ、単芯導体17aの導体端部の側面に、基端側に向かって徐々に突出量が大きくなる突出部、例えばフランジ31を有していること以外は、絶縁電線材10Bと同じである。また、導体端部の対面配置も電気・電子機器接続部材2における対面配置と同一である。接続用部材20Cは、底部22bの内周面から内側に突出する内側突出部32を有し、周壁23bを有さないこと以外は、接続用部材20Bと同じである。
 電気・電子機器接続部材3において、接続用部材20Cは、接続用部材20Bと同様に、導体端部の対面配置状態を拘束している。これに加えて、導体端部に設けた突出部31と接続用部材に設けた内側突出部32とが、図示するように突出部31の終縁部分と内側突出部32とが係止して、導体端部の軸線方向及び軸線方向に交差する方向の各位置ズレが拘束されている。そのため、電気・電子機器接続部材3は、導体端部の対面配置状態をより確実に拘束できる。
The electrical / electronic device connecting member 3 shown in FIG. 4 is different from the electrical / electronic device connecting member 2 except that the shape of the end portion of the insulated wire material 10C, the shape of the connecting member 20C, and the positional deviation restraining function are different. It is the same. The electrical / electronic device connecting member 3 includes a connecting member 20C that also serves as a misalignment restraining portion as well as an attached misaligning restraining portion.
That is, except that each of the insulated wire material 10C has a protruding portion, for example, a flange 31, on the side surface of the conductor end portion of the single-core conductor 17a, the amount of protrusion gradually increases toward the proximal end side. It is the same as the insulated wire material 10B. Further, the face-to-face arrangement of the conductor end portions is the same as the face-to-face arrangement in the electrical / electronic device connecting member 2. The connecting member 20C is the same as the connecting member 20B except that it has an inner protruding portion 32 protruding inward from the inner peripheral surface of the bottom portion 22b and does not have a peripheral wall 23b.
In the electrical / electronic device connecting member 3, the connecting member 20C restrains the facing arrangement state of the conductor end portion, similarly to the connecting member 20B. In addition to this, the protruding portion 31 provided at the end of the conductor and the inner protruding portion 32 provided on the connecting member are engaged with each other at the end edge portion of the protruding portion 31 and the inner protruding portion 32 as shown in the drawing. , Each positional deviation of the conductor end in the axial direction and the direction intersecting the axial direction is constrained. Therefore, the electric / electronic device connecting member 3 can more reliably restrain the facing arrangement state of the conductor end portion.
 図5に示す電気・電子機器接続部材4は、絶縁電線材10Dの端部形状、及び接続用部材20Dの形状、更には位置ズレ拘束機能が異なること以外は、電気・電子機器接続部材2と同じである。この電気・電子機器接続部材4は、付設された位置ズレ拘束部とともに、自身も位置ズレ拘束部を兼ねる接続用部材20Dを備えている。すなわち、絶縁電線材10Dは、それぞれ、単芯導体17bの導体端部の側面に溝部33を有していること以外は、絶縁電線材10Bと同じである。接続用部材20Dは、上記溝部33に侵入する内側突出部34を周壁の内周面に有していること以外は、接続用部材20Bと同じである。
 電気・電子機器接続部材4において、接続用部材20Dは、接続用部材20Bと同様に、導体端部の対面配置状態を拘束している。これに加えて、導体端部に設けた溝部33と接続用部材に設けた内側突出部34とが係止して、導体端部の軸線方向及び軸線方向に交差する方向の各位置ズレが拘束されている。そのため、電気・電子機器接続部材4は、導体端部の対面配置状態をより確実に拘束できる。
The electrical / electronic device connecting member 4 shown in FIG. 5 is different from the electrical / electronic device connecting member 2 except that the shape of the end portion of the insulated wire material 10D, the shape of the connecting member 20D, and the positional deviation restraining function are different. It is the same. The electrical / electronic device connecting member 4 includes a connecting member 20D that also serves as a misaligned restraining portion, as well as an attached misaligned restraining portion. That is, the insulated wire material 10D is the same as the insulated wire material 10B, except that each of the single-core conductors 17b has a groove 33 on the side surface of the conductor end portion. The connecting member 20D is the same as the connecting member 20B except that the inner protruding portion 34 that penetrates the groove 33 is provided on the inner peripheral surface of the peripheral wall.
In the electrical / electronic device connecting member 4, the connecting member 20D restrains the facing arrangement state of the conductor end portion, similarly to the connecting member 20B. In addition to this, the groove 33 provided at the end of the conductor and the inner protrusion 34 provided at the connecting member are locked, and the positional deviations of the conductor end in the axial direction and the direction intersecting the axial direction are restrained. Has been done. Therefore, the electrical / electronic device connecting member 4 can more reliably restrain the facing arrangement state of the conductor end portion.
 図6に示す電気・電子機器接続部材5は、絶縁電線材10Eの端部形状、及び接続用部材20Eの形状、更には位置ズレ拘束機能が異なること以外は、電気・電子機器接続部材2と同じである。この電気・電子機器接続部材5は、付設された位置ズレ拘束部とともに、自身も位置ズレ拘束部を兼ねる接続用部材20Eを備えている。すなわち、絶縁電線材10Eは、それぞれ、単芯導体17cの端部の側面にネジ溝状の凹凸35を有していること以外は、絶縁電線材10Cと同じである。接続用部材20Eは、周壁23bの内周面に上記凹凸35と噛合(螺合)するネジ山状の凹凸36を有していること以外は、接続用部材20Cと同じである。
 電気・電子機器接続部材5において、接続用部材20Eは、接続用部材20Bと同様に、導体端部の対面配置状態を拘束している。これに加えて、導体端部に設けたネジ溝状の凹凸35と接続用部材に設けたネジ山状の凹凸36とが螺合して、導体端部の軸線方向及び軸線方向に交差する方向の各位置ズレが拘束されている。そのため、電気・電子機器接続部材5は、導体端部の対面配置状態をより確実に拘束できる。
The electrical / electronic device connecting member 5 shown in FIG. 6 is different from the electrical / electronic device connecting member 2 except that the shape of the end portion of the insulated wire material 10E, the shape of the connecting member 20E, and the positional deviation restraining function are different. It is the same. The electrical / electronic device connecting member 5 includes a connecting member 20E that also serves as a misalignment restraining portion as well as an attached misaligning restraining portion. That is, the insulated wire material 10E is the same as the insulated wire material 10C except that each of the single-core conductors 17c has a thread groove-shaped unevenness 35 on the side surface of the end portion. The connecting member 20E is the same as the connecting member 20C except that the inner peripheral surface of the peripheral wall 23b has a thread-shaped unevenness 36 that meshes (screws) with the unevenness 35.
In the electrical / electronic device connecting member 5, the connecting member 20E restrains the facing arrangement state of the conductor end portion, similarly to the connecting member 20B. In addition to this, the direction in which the thread groove-shaped unevenness 35 provided at the conductor end and the thread-shaped unevenness 36 provided on the connecting member are screwed together and intersect the axial direction and the axial direction of the conductor end. Each position shift of is restrained. Therefore, the electric / electronic device connecting member 5 can more reliably restrain the facing arrangement state of the conductor end portion.
 図7に示す電気・電子機器接続部材6は、接続用部材20Fが異なること以外は、電気・電子機器接続部材2と同じであり、接合基部22eと輪環状部材24とからなり、自身が単独で、軸線方向の位置ズレを拘束する位置ズレ拘束部を兼ねる接続用部材20Fを備えている。
 接続用部材20Fは、接続用部材20Bの底部22bと周壁23bとを分割して別体として有している。すなわち、接続用部材20Fの接合基部22eは、周壁23bを有さないこと以外は底部22bと同じであり、略台形を有している。輪環状部材24は、接合基部22eとは独立した(別体の)部材であって、輪環状部材24の内形及び内側寸法(内径)は、対面配置された導体端部の外形及び外側寸法(外径)と一致している。輪環状部材24の内面には上述の被拘束部を有していることが軸線方向の位置ズレを効果的に拘束できる点で好ましい。
 接続用部材20Fは、接合基部22eと輪環状部材24とが協同して位置ズレ拘束機能(軸線方向の位置ズレ、及び軸線方向に交差する方向への位置ズレを拘束する機能)を奏する。接合基部22eの位置ズレ拘束機能は上述の接続用部材20Bの軸線方向の位置ズレ拘束機能と同じである。輪環状部材24は、対面配置された導体端部の周面に挿着(挿入して装着)され、軸線方向に交差する方向への導体端部の位置ズレを拘束している。
The electrical / electronic device connecting member 6 shown in FIG. 7 is the same as the electrical / electronic device connecting member 2 except that the connecting member 20F is different. Therefore, a connecting member 20F that also serves as a position shift restraining portion that restrains the position shift in the axial direction is provided.
The connecting member 20F has a bottom portion 22b and a peripheral wall 23b of the connecting member 20B as separate bodies. That is, the joining base portion 22e of the connecting member 20F is the same as the bottom portion 22b except that it does not have a peripheral wall 23b, and has a substantially trapezoidal shape. The annular member 24 is a (separate) member independent of the joint base 22e, and the inner and inner dimensions (inner diameter) of the annular member 24 are the outer and outer dimensions of the conductor end portions arranged facing each other. Consistent with (outer diameter). It is preferable that the inner surface of the annular member 24 has the above-mentioned restrained portion in that the positional deviation in the axial direction can be effectively restrained.
The connecting member 20F cooperates with the joining base portion 22e and the annular member 24 to perform a positional deviation restraining function (a function of restraining the positional deviation in the axial direction and the positional deviation in the direction intersecting the axial direction). The misalignment restraint function of the joint base portion 22e is the same as the above-mentioned misalignment restraint function of the connecting member 20B in the axial direction. The annular member 24 is inserted (inserted and mounted) on the peripheral surface of the conductor end portions arranged facing each other, and restrains the positional deviation of the conductor end portions in the direction intersecting the axial direction.
 図1~図7に示される電気・電子機器接続部材1~6においては、2本の絶縁電線材を接合しているが、本発明においては、3本以上の絶縁電線材を接合することもできる。
 また、電気・電子機器接続部材1~6においては、単芯導体を接合しているが、本発明においては、単芯導体に代えて多芯導体を用いることにより、同様にして多芯導体を接合することもできる。
 更に、電気・電子機器接続部材1~6においては、1つの有底孔内に2本の導体端部を挿入しているが、本発明においては、導体端部数と同数の有底孔を設け、各有底孔に1つの導体端部を挿入してもよい。
 更に、電気・電子機器接続部材1~6においては、絶縁電線材の導体端部を曲げ加工しているが、本発明において、電気・電子機器接続部材を電気・電子機器に実装配置したとき等、導体端部同士が接合可能な対面配置になるのであれば、曲げ加工はしなくてもよい。このような曲げ加工を不実施とすると、電気・電子機器の所定位置に実装するだけで接合することができ、電気・電子機器の更なる小型化等を実現できる。
 電気・電子機器接続部材3及び4は、接続用部材が位置ズレ拘束部として凸部を有し、導体端部が被拘束部として凹部を有しているが、本発明においては、接続用部材が位置ズレ拘束部として凹部を有し、導体端部が被拘束部として凸部を有していてもよい。
 また、電気・電子機器接続部材4は、溝部及び内側突出部を1つずつ有しているが、本発明において、溝部及び内側突出部は複数設けてもよい。
In the electrical / electronic device connecting members 1 to 6 shown in FIGS. 1 to 7, two insulated wire materials are joined, but in the present invention, three or more insulated wire materials may be joined. it can.
Further, although the single-core conductors are joined in the electrical / electronic device connecting members 1 to 6, in the present invention, the multi-core conductor is similarly formed by using the multi-core conductor instead of the single-core conductor. It can also be joined.
Further, in the electric / electronic device connecting members 1 to 6, two conductor end portions are inserted in one bottomed hole, but in the present invention, the same number of bottomed holes as the number of conductor end portions is provided. , One conductor end may be inserted into each bottomed hole.
Further, in the electric / electronic device connecting members 1 to 6, the conductor end portion of the insulated electric wire material is bent, but in the present invention, when the electric / electronic device connecting member is mounted and arranged on the electric / electronic device, etc. , If the conductor ends are arranged so as to be able to be joined to each other, it is not necessary to perform bending. If such bending is not performed, joining can be performed simply by mounting the electric / electronic device at a predetermined position, and further miniaturization of the electric / electronic device can be realized.
In the electrical / electronic device connecting members 3 and 4, the connecting member has a convex portion as a misalignment restraining portion, and the conductor end portion has a concave portion as a restrained portion. However, in the present invention, the connecting member has a concave portion. May have a concave portion as a misalignment restraint portion, and the conductor end portion may have a convex portion as a restrained portion.
Further, although the electric / electronic device connecting member 4 has one groove portion and one inner protrusion portion, in the present invention, a plurality of groove portions and inner protrusion portions may be provided.
 本発明は、本発明で規定されること以外は上述の好ましい形態に限定されるものではない。また、各図面に示される形態は、本発明の理解を容易にするための模式図であり、各部材の大きさ、厚さ、相対的な大小関係等は説明の便宜上変えている場合があり、実際の関係をそのまま示すものではない。更に、本発明で規定する事項以外はこれらの図面に示された外形、形状に限定されるものでもない。 The present invention is not limited to the above-mentioned preferable forms other than those specified in the present invention. In addition, the form shown in each drawing is a schematic view for facilitating the understanding of the present invention, and the size, thickness, relative magnitude relationship, etc. of each member may be changed for convenience of explanation. , Does not show the actual relationship as it is. Furthermore, the items other than those specified in the present invention are not limited to the outer shape and shape shown in these drawings.
<電気・電子機器用部材>
 本発明に用いる電気・電子機器用部材として上記した部材は、通常のものを特に制限されることなく、用いることができる。中でも、配線材が好ましく、絶縁電線材がより好ましい。
(絶縁電線材)
 本発明に用いる絶縁電線材は、特に制限されず、例えば、単芯導体を有する絶縁電線材、多芯導体を有する絶縁電線材が挙げられる。多芯導体を有する絶縁電線材はコイルの巻線として用いた際に渦電流損失を低減できる点で好ましい。
 本発明に用いる絶縁電線材は、通常、単芯導体又は多芯導体(複芯導体)と、この導体の外周を被覆する外周絶縁層とを有している。
<Members for electrical and electronic equipment>
As the members for electric / electronic devices used in the present invention, ordinary members can be used without particular limitation. Among them, the wiring material is preferable, and the insulated wire material is more preferable.
(Insulated wire material)
The insulated wire material used in the present invention is not particularly limited, and examples thereof include an insulated wire material having a single-core conductor and an insulated wire material having a multi-core conductor. An insulated wire material having a multi-core conductor is preferable because it can reduce eddy current loss when used as a coil winding.
The insulated wire material used in the present invention usually has a single-core conductor or a multi-core conductor (double-core conductor) and an outer peripheral insulating layer that covers the outer periphery of the conductor.
 - 導体 -
 本発明に用いる絶縁電線材が有しうる単芯導体は単芯の導体素線からなる導体を意味するが、適宜に銅線素線の外周面を被覆する導体絶縁層(エナメル層)を有していてもよい。
 絶縁電線材が有しうる多芯導体は、互いに並行若しくは螺旋状に配置された複数本の分割導体と、分割導体間に挟まれた導体絶縁層とを備えた導体を意味する。多芯導体を形成する分割導体の数は、2本以上であればよい。具体的には、多芯導体が矩形(平角形状等)若しくは薄板状の断面形状であるリボン線である場合、多芯導体を形成する分割導体の数(積層数)は、好ましくは2~8本、より好ましくは3~6本である。一方、多芯導体が、撚り線(撚り線の平角成形体等を含む。)である場合、多芯導体を形成する分割導体の数(撚り線数)は、好ましくは7本(1本の分割導体の周囲に6本の分割導体を配置した撚線構造)~100本であり、より好ましくは7~37本である。多芯導体における分割導体の配列は、特に制限されず、積層配列、撚り合わせ、引き揃え等の通常の配列を適用できる。分割導体は、多芯導体を形成する導体素線の一つであって、複数本が協働して多芯導体を形成することにより渦電流損失の低減に寄与する。
 本発明において、単芯導体及び多芯導体を併せて導体ということがある。
-Conductor-
The single-core conductor that the insulated wire material used in the present invention can have means a conductor made of a single-core conductor wire, and appropriately has a conductor insulating layer (enamel layer) that covers the outer peripheral surface of the copper wire. You may be doing it.
The multi-core conductor that the insulated wire material can have means a conductor including a plurality of divided conductors arranged in parallel or spirally with each other and a conductor insulating layer sandwiched between the divided conductors. The number of divided conductors forming the multi-core conductor may be two or more. Specifically, when the multi-core conductor is a ribbon wire having a rectangular (flat shape or the like) or a thin plate-like cross-sectional shape, the number of divided conductors (number of layers) forming the multi-core conductor is preferably 2 to 8. Books, more preferably 3-6. On the other hand, when the multi-core conductor is a stranded wire (including a flat-angle molded body of the stranded wire), the number of divided conductors (the number of stranded wires) forming the multi-core conductor is preferably 7 (1 wire). It is a stranded wire structure in which 6 divided conductors are arranged around the divided conductors) to 100, and more preferably 7 to 37. The arrangement of the divided conductors in the multi-core conductor is not particularly limited, and ordinary arrangements such as laminated arrangement, twisting, and alignment can be applied. The split conductor is one of the conductor strands that form a multi-core conductor, and contributes to the reduction of eddy current loss by forming a multi-core conductor in cooperation with a plurality of conductors.
In the present invention, a single-core conductor and a multi-core conductor may be collectively referred to as a conductor.
 本発明において、単芯導体又は分割導体の形状は、いずれも、特に制限されず、絶縁電線材又は電気・電子機器接続部材の形状に応じて決定される。例えば、軸線に垂直な断面形状として、矩形(平角形状)、円形、楕円形、不定形等、種々の形状が挙げられ、矩形又は円形が好ましい。
 単芯導体又は分割導体としては、絶縁電線材で用いられている通常のものを広く使用することができ、例えば、銅線、アルミニウム線等の金属導体を用いることができる。好ましくは、酸化物を含まない99.95%(3N)以上の高純度銅が挙げられる。具体的には、無酸素銅(OFC:Oxygen-Free Copper):C1020(純度99.96%以上)又は電子管用無酸素銅(TPC:Tough-Pitch Copper):C1011(純度99.99%以上)が挙げられる。より好ましくは、酸素含有量が30ppm以下の無酸素銅であり、更に好ましくは20ppm以下の無酸素銅である。
 単芯導体又は分割導体の端面は、通常、接続用部材と接合しやすい平面に形成されている。
In the present invention, the shape of the single-core conductor or the split conductor is not particularly limited, and is determined according to the shape of the insulated wire material or the electrical / electronic device connecting member. For example, examples of the cross-sectional shape perpendicular to the axis include various shapes such as a rectangle (flat shape), a circle, an ellipse, and an amorphous shape, and a rectangle or a circle is preferable.
As the single-core conductor or the split conductor, ordinary conductors used in insulated electric wire materials can be widely used, and for example, metal conductors such as copper wire and aluminum wire can be used. Preferably, high purity copper of 99.95% (3N) or more containing no oxide is mentioned. Specifically, oxygen-free copper (OFC: Oxygen-Free Copper): C1020 (purity 99.96% or more) or oxygen-free copper for electron tubes (TPC: Touch-Pitch Copper): C1011 (purity 99.99% or more) Can be mentioned. More preferably, it is oxygen-free copper having an oxygen content of 30 ppm or less, and even more preferably, oxygen-free copper having an oxygen content of 20 ppm or less.
The end face of the single-core conductor or the split conductor is usually formed in a plane that can be easily joined to the connecting member.
 単芯導体又は分割導体の大きさは、特に限定されないが、矩形の断面形状において、厚さ(短辺長さ)は0.4~3.0mmが好ましく、0.5~2.5mmがより好ましく、幅(長辺長さ)は1.0~5.0mmが好ましく、1.4~4.0mmがより好ましい。厚さと幅との長さの割合(厚さ:幅)は、1:1~1:8が好ましく、1:1~1:4がより好ましい。なお、厚さと幅との長さの割合(厚さ:幅)が1:1のとき、長辺とは1対の対面する辺を意味し、短辺とは他の1対の対面する辺を意味する。矩形の断面形状において、角部を面取り加工する場合、曲率半径rは、0.6mm以下が好ましく、0.1~0.4mmがより好ましく、0.2~0.4mmがより好ましい。このように、断面角部を面取り加工することにより、角部からの部分放電を抑制することができる。
 多芯導体の大きさは、特に制限されず、分割導体の大きさ及び分割導体の数により、適宜に決定される。
The size of the single-core conductor or the divided conductor is not particularly limited, but the thickness (short side length) is preferably 0.4 to 3.0 mm, more preferably 0.5 to 2.5 mm in the rectangular cross-sectional shape. Preferably, the width (long side length) is preferably 1.0 to 5.0 mm, more preferably 1.4 to 4.0 mm. The ratio of the length to the thickness (thickness: width) is preferably 1: 1 to 1: 8, and more preferably 1: 1 to 1: 4. When the ratio of length to width (thickness: width) is 1: 1, the long side means a pair of facing sides, and the short side means another pair of facing sides. Means. When the corners are chamfered in a rectangular cross-sectional shape, the radius of curvature r is preferably 0.6 mm or less, more preferably 0.1 to 0.4 mm, and even more preferably 0.2 to 0.4 mm. By chamfering the corners of the cross section in this way, partial discharge from the corners can be suppressed.
The size of the multi-core conductor is not particularly limited, and is appropriately determined depending on the size of the divided conductors and the number of divided conductors.
 - 導体絶縁層 -
 多芯導体が有する導体絶縁層は、分割導体間に存在する絶縁層であればよく、各分割導体の外周面を被覆する絶縁層として設けられている。
 多芯導体が有する導体絶縁層の厚さは、渦電流損失低減の効果が得られればよいため、多芯導体が厚くなり過ぎないように、好ましくは0.01~10μmであり、より好ましくは0.01~3μmであり、更に好ましくは0.1~1μmである。本明細書において、導体絶縁層の厚さは、マイクロスコープを用いて、絶縁電線材をその長手軸方向に対して垂直に切断した断面を観察して求めた厚さをいう。
 導体絶縁層は、1層構造であってもよく、2層構造若しくはそれ以上の層構造であってもよい。本発明において、層の層数は、層を形成する樹脂及び添加剤の種類及び含有量の異同にかかわらず、層を断面観察することによって、決定される。具体的には、ある層の断面を倍率200倍で観察したときに、年輪状の境界を確認できない場合、ある層の総数は1とし、年輪状の境界を確認できる場合、ある層の層数は(境界数+1)とする。
-Conductor insulation layer-
The conductor insulating layer of the multi-core conductor may be an insulating layer existing between the divided conductors, and is provided as an insulating layer for covering the outer peripheral surface of each divided conductor.
The thickness of the conductor insulating layer of the multi-core conductor is preferably 0.01 to 10 μm, more preferably 0.01 to 10 μm so that the multi-core conductor does not become too thick, as long as the effect of reducing the eddy current loss can be obtained. It is 0.01 to 3 μm, more preferably 0.1 to 1 μm. In the present specification, the thickness of the conductor insulating layer means a thickness obtained by observing a cross section of an insulated electric wire material cut perpendicularly to its longitudinal axis direction using a microscope.
The conductor insulating layer may have a one-layer structure, a two-layer structure or a higher layer structure. In the present invention, the number of layers is determined by observing the cross section of the layer regardless of the type and content of the resin and the additive forming the layer. Specifically, when the cross section of a certain layer is observed at a magnification of 200 times, if the annual ring-shaped boundary cannot be confirmed, the total number of the certain layers is set to 1, and if the annual ring-shaped boundary can be confirmed, the number of layers of the certain layer. Is (number of boundaries + 1).
 導体絶縁層は、有機高分子(有機樹脂)からなる絶縁層が好ましく、樹脂成分として熱硬化性の有機高分子(熱硬化性樹脂)を含む絶縁層(エナメル層)が好ましい。熱硬化性樹脂としては、電線で通常用いられる熱硬化性樹脂であれば、特に制限されることなく、用いることができる。例えば、ポリアミドイミド(PAI)、ポリイミド(PI)、ポリエーテルイミド(PEI)、ポリエステルイミド(PEsI)、ポリウレタン(PU)、ポリエステル(PEst)、ポリベンゾイミダゾール、メラミン樹脂又はエポキシ樹脂等が挙げられる。中でも、ポリアミドイミド、ポリイミド、ポリエーテルイミド、ポリエステルイミド、ポリウレタン又はポリエステルが好ましい。熱硬化性樹脂は、1種又は2種以上含有していてもよい。 The conductor insulating layer is preferably an insulating layer made of an organic polymer (organic resin), and preferably an insulating layer (enamel layer) containing a thermosetting organic polymer (thermosetting resin) as a resin component. As the thermosetting resin, any thermosetting resin usually used for electric wires can be used without particular limitation. For example, polyamideimide (PAI), polyimide (PI), polyetherimide (PEI), polyesterimide (PEsI), polyurethane (PU), polyester (PEst), polybenzoimidazole, melamine resin, epoxy resin and the like can be mentioned. Of these, polyamideimide, polyimide, polyetherimide, polyesterimide, polyurethane or polyester are preferable. The thermosetting resin may be contained alone or in combination of two or more.
 導体絶縁層は、上記有機高分子からなる緻密な絶縁層であってもよく、層中に気泡(空気)を有する絶縁層であってもよい。層中に空気を含むことで比誘電率が低下して、電圧が印加された時に分割導体間の空気ギャップに発生する部分放電やコロナ放電を抑制することができる。本発明において、緻密な絶縁層とは、通常、絶縁層中に気泡を有しない絶縁層を意味するが、例えば不可避的に存在しうる気泡等のように、本発明の効果を損なわない範囲で気泡を有する絶縁層を包含することを意味する。
 気泡を有する導体絶縁層の発泡倍率は、1.2倍以上が好ましく、1.4倍以上がより好ましい。発泡倍率の上限に制限はないが、通常5.0倍以下とすることが好ましい。発泡倍率は、発泡のために被覆した有機高分子(導体絶縁層)の密度ρf及び発泡前の密度ρsを水中置換法により測定し、ρs/ρfにより算出する。
 導体絶縁層に含まれる気泡の大きさ、すなわち、平均気泡径は10μm以下が好ましく、5μm以下がより好ましく、3μm以下が更に好ましく、1μm以下が特に好ましい。10μmを超えると絶縁破壊電圧が低下することがあり、10μm以下とすることで絶縁破壊電圧を良好に維持できる。更に、5μm以下、3μm以下とすることにより、順次絶縁破壊電圧をより確実に保持できる。平均気泡径の下限に制限はないが、1nm以上であることが実際的であり、好ましい。平均気泡径は、導体絶縁層の断面を走査電子顕微鏡(SEM)で観察する。そして、観察領域から合計50個の気泡を無作為に選び、画像寸法計測ソフト(WinROOF:商品名、三谷商事社製)を用いて径測定モードで測定し、これらを平均して算出した値である。この気泡径は、発泡倍率、有機高分子の濃度、粘度、温度、発泡剤の添加量、焼付炉の温度等の製造プロセスによって適宜調整できる。
The conductor insulating layer may be a dense insulating layer made of the above organic polymer, or may be an insulating layer having bubbles (air) in the layer. By including air in the layer, the relative permittivity is lowered, and partial discharge and corona discharge generated in the air gap between the divided conductors when a voltage is applied can be suppressed. In the present invention, the dense insulating layer usually means an insulating layer having no bubbles in the insulating layer, but as long as the effect of the present invention is not impaired, for example, bubbles that may inevitably exist. It means to include an insulating layer having bubbles.
The foaming ratio of the conductor insulating layer having bubbles is preferably 1.2 times or more, more preferably 1.4 times or more. The upper limit of the foaming ratio is not limited, but is usually preferably 5.0 times or less. The foaming ratio is calculated by measuring the density ρf of the organic polymer (conductor insulating layer) coated for foaming and the density ρs before foaming by an underwater substitution method and calculating by ρs / ρf.
The size of the bubbles contained in the conductor insulating layer, that is, the average cell diameter is preferably 10 μm or less, more preferably 5 μm or less, further preferably 3 μm or less, and particularly preferably 1 μm or less. If it exceeds 10 μm, the dielectric breakdown voltage may decrease, and if it is 10 μm or less, the dielectric breakdown voltage can be maintained satisfactorily. Further, by setting the voltage to 5 μm or less and 3 μm or less, the dielectric breakdown voltage can be held more reliably. The lower limit of the average cell diameter is not limited, but it is practically 1 nm or more, which is preferable. The average cell diameter is observed by observing the cross section of the conductor insulating layer with a scanning electron microscope (SEM). Then, a total of 50 bubbles were randomly selected from the observation area, measured in the diameter measurement mode using image dimension measurement software (WinROOF: trade name, manufactured by Mitani Corporation), and the values calculated by averaging these. is there. The bubble diameter can be appropriately adjusted by the manufacturing process such as the expansion ratio, the concentration of the organic polymer, the viscosity, the temperature, the amount of the foaming agent added, and the temperature of the baking oven.
 この導体絶縁層は、電線で通常用いられる各種の添加剤を含有していてもよい。この場合、添加剤の含有量としては、特に限定されないが、樹脂成分100質量部に対して、5質量以下が好ましく、3質量部以下がより好ましい。 This conductor insulating layer may contain various additives usually used in electric wires. In this case, the content of the additive is not particularly limited, but is preferably 5 parts by mass or less, and more preferably 3 parts by mass or less, based on 100 parts by mass of the resin component.
 導体絶縁層は、公知の方法により、形成できる。
 例えば、気泡を有しない導体絶縁層は、各分割導体の外周面若しくは他の分割導体と積層される表面に、上記有機高分子のワニスを塗布して焼付けする方法が好ましい。このワニスは樹脂成分と、溶媒と、必要により樹脂成分の硬化剤又は各種の添加剤とを含有する。溶媒は、有機溶媒が好ましく、樹脂成分を溶解又は分散できるものが適宜に選択される。
 ワニスの塗布方法は、通常の方法を選択することができ、例えば、分割導体の断面形状と相似形若しくは略相似形の開口を有するワニス塗布用ダイスを用いる方法等が挙げられる。ワニスの焼付けは、通常、焼付炉で行われる。このときの条件は、樹脂成分又は溶媒の種類等に応じて一義的に決定できないが、例えば、炉内温度400~650℃にて通過時間(焼付時間)を10~90秒の条件が挙げられる。
 導体絶縁層の厚さは、ワニスの塗布量、塗布回数等により、適宜に設定できる。
 気泡(空気)を有する導体絶縁層を形成する方法としては、通常の方法を選択することができ、例えば、公知の発泡剤を含有するワニスを用いた、上記の、気泡を有しない導体絶縁層を形成する方法と同様の方法が挙げられる。
 単芯導体が有してもよい導体絶縁層は、上述の多芯導体が有する導体絶縁層と同じである。
The conductor insulating layer can be formed by a known method.
For example, for the conductor insulating layer having no bubbles, a method of applying the above-mentioned organic polymer varnish to the outer peripheral surface of each divided conductor or the surface to be laminated with other divided conductors and baking is preferable. This varnish contains a resin component, a solvent, and if necessary, a curing agent for the resin component or various additives. The solvent is preferably an organic solvent, and a solvent capable of dissolving or dispersing the resin component is appropriately selected.
As the varnish coating method, a normal method can be selected, and examples thereof include a method using a varnish coating die having an opening similar to or substantially similar to the cross-sectional shape of the divided conductor. The varnish is usually baked in a baking oven. The conditions at this time cannot be uniquely determined depending on the type of resin component or solvent, and examples thereof include a condition in which the passage time (baking time) is 10 to 90 seconds at a furnace temperature of 400 to 650 ° C. ..
The thickness of the conductor insulating layer can be appropriately set depending on the amount of varnish applied, the number of times of application, and the like.
As a method for forming the conductor insulating layer having bubbles (air), a usual method can be selected. For example, the above-mentioned conductor insulating layer having no bubbles using a varnish containing a known foaming agent can be selected. A method similar to the method of forming the above can be mentioned.
The conductor insulating layer that the single-core conductor may have is the same as the conductor insulating layer that the multi-core conductor described above has.
 - 外周絶縁層 -
 導体を被覆する外周絶縁層は、導体の外周面に直接又は間接的(他の層を介して)に設けられる。他の層としては、接着層等が挙げられる。この外周絶縁層は、導体との密着強度が高く、導体の外側に少なくとも1層設けられる。その層数は、1層であっても複数層であってもよい。
-Outer peripheral insulation layer-
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.
 導体の外周には外周絶縁層が配され、この外周絶縁層は例えば熱可塑性樹脂で形成されている。この熱可塑性樹脂は、耐熱老化特性に加えて、導体と外周絶縁層との接着強度及び耐溶剤性にも優れる点、更には電気・電子機器の高性能化の点で、融点が300℃以上であることが好ましく、330℃以上であることが更に好ましい。この熱可塑性樹脂の融点の上限は、特に制限されるものではないが、例えば外周絶縁層を押出工程で形成させるという観点から、450℃以下であることが好ましい。熱可塑性樹脂の融点は、示差走査熱量分析(DSC)により、測定することができる。
 熱可塑性樹脂としては、電線に通常用いられる熱可塑性樹脂であれば、特に限定されることなく、用いることができる。例えば、ポリエーテルエーテルケトン(PEEK)、変性ポリエーテルエーテルケトン(modified-PEEK)、熱可塑性ポリイミド(TPI)、芳香環を有するポリアミド(芳香族ポリアミドという)、ポリケトン(PK)等が挙げられる。
 上記熱可塑性樹脂には、ポリエーテルケトン(PEK)、ポリエーテルエーテルケトンに代表される芳香環、エーテル結合、ケトン結合を含む熱可塑性樹脂であるポリアリールエーテルケトン(PAEK)を用いることもできる。若しくは、ポリエーテルエーテルケトンに他の熱可塑性樹脂を混合した変性ポリエーテルエーテルケトンを用いることもできる。又は、熱可塑性ポリイミド(TPI)からなる群より選択される少なくとも1種の熱可塑性樹脂を使用することもできる。熱可塑性樹脂は1種単独でもよく、2種以上を用いてもよい。また、上記変性ポリエーテルエーテルケトンは、例えば、ポリエーテルエーテルケトンにポリフェニルサルホンを添加した混合物であり、ポリフェニルサルホンはポリエーテルエーテルケトンより混合率が低い。
An outer peripheral insulating layer is arranged on the outer periphery of the conductor, and the outer peripheral insulating layer is formed of, for example, a thermoplastic resin. In addition to heat-resistant aging characteristics, this thermoplastic resin has an excellent adhesive strength between the conductor and the outer peripheral insulating layer and solvent resistance, and also has a melting point of 300 ° C. or higher in terms of improving the performance of electrical and electronic equipment. It is preferably 330 ° C. or higher, and more preferably 330 ° C. or higher. The upper limit of the melting point of the thermoplastic resin is not particularly limited, but is preferably 450 ° C. or lower from the viewpoint of forming the outer peripheral insulating layer in the extrusion process, for example. 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).
As the thermoplastic resin, 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. Alternatively, a modified polyetheretherketone obtained by mixing another thermoplastic resin with the polyetheretherketone can also be used. Alternatively, at least one thermoplastic resin selected from the group consisting of thermoplastic polyimide (TPI) can also be used. The thermoplastic resin may be used alone or in combination of two or more. The modified polyetheretherketone is, for example, a mixture of polyetheretherketone and polyphenylsulfone, and the mixing ratio of polyphenylsulfone is lower than that of polyetheretherketone.
 外周絶縁層を熱可塑性樹脂で形成する場合、導体の外周に、樹脂組成物を押出成形することにより、形成することが好ましい。樹脂組成物は、上述の熱可塑性樹脂と、必要により各種の添加剤とを含有する。押出方法は、熱可塑性樹脂の種類等に応じて一義的に決定できないが、例えば、導体の断面形状と相似形又は略相似形の開口を有する押出ダイスを用いて、熱可塑性樹脂の溶融以上の温度で押出す方法が挙げられる。押出し温度は、好ましくは、熱可塑性樹脂の融点よりも40~60℃高い温度である。
 外周絶縁層は、押出成形に限定されず、上述の熱可塑性樹脂と溶媒等と必要により各種の添加剤とを含有するワニスを用いて、上記エナメル層と同様にして、形成することもできる。
 本発明においては、生産性の点で、外周絶縁層は押出成形により形成することが好ましい。
When the outer peripheral insulating layer is formed of a thermoplastic resin, it is preferably formed by extrusion molding a resin composition on the outer periphery of the conductor. The resin composition contains the above-mentioned thermoplastic resin and, if necessary, various additives. The extrusion method cannot be uniquely determined depending on the type of the thermoplastic resin, etc., but for example, using an extrusion die having an opening similar to or substantially similar to the cross-sectional shape of the conductor, it is more than melting the thermoplastic resin. A method of extruding at temperature can be mentioned. The extrusion temperature is preferably a temperature 40 to 60 ° C. higher than the melting point of the thermoplastic resin.
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.
In the present invention, the outer peripheral insulating layer is preferably formed by extrusion molding from the viewpoint of productivity.
 外周絶縁層は、電線の絶縁層に通常用いられる各種の添加剤を含有していてもよい。この場合、添加剤の含有量としては、特に限定されないが、樹脂成分100質量部に対して、5質量以下が好ましく、3質量部以下がより好ましい。 The outer peripheral insulating layer may contain various additives usually used for the insulating layer of electric wires. In this case, the content of the additive is not particularly limited, but is preferably 5 parts by mass or less, and more preferably 3 parts by mass or less, based on 100 parts by mass of the resin component.
 外周絶縁層の厚さは、十分な可撓性を有するとともに、絶縁不良を防止できる観点から、40~200μmが好ましい。すなわち、厚さは、好ましくは40μm以上、より好ましくは50μm以上あることで、絶縁不良を発生することなく、十分な絶縁性が確保される。また厚さが、200μm以下であることから、十分な可撓性が得られる。したがって、絶縁電線材を湾曲させて使うことも可能になる。 The thickness of the outer peripheral insulating layer is preferably 40 to 200 μm from the viewpoint of having sufficient flexibility and preventing poor insulation. That is, when the thickness is preferably 40 μm or more, more preferably 50 μm or more, sufficient insulating properties are ensured without causing insulation defects. Further, since the thickness is 200 μm or less, sufficient flexibility can be obtained. Therefore, it is possible to use the insulated wire material in a curved shape.
 [本発明の電気・電子機器接続部材の製造方法]
 本発明の電気・電子機器接続部材は、電気・電子機器用部材の対面配置された導体端部に、この導体端部の位置ズレ拘束部を有する接続用部材を装着し、次いで、導体端部と接続用部材とを接合する方法により、製造できる。この電気・電子機器接続部材の製造方法(本発明の製造方法という。)により、接合時又は接合中に導体端部の対面配置を固定できるので、電気・電子機器用部材の対面配置された導体端部の接合代を狭小化しても、導体同士を高強度かつ低抵抗で接合することができる。また、接合代を狭小化できるため、製造される電気・電子機器接続部材は実装される電気・電子機器の小型化、高性能化等に貢献できる。更に、接合方法として、溶接法、特に高出力のファイバレーザ溶接を採用すると、絶縁電線材等の絶縁層の劣化を抑えつつも溶接代を更に狭小化することができ、強度及び低抵抗を高い水準での両立しつつ、電気・電子機器の更なる小型化、高性能化を図ることができる。
[Manufacturing Method of Electrical / Electronic Device Connecting Member of the Present Invention]
In the electrical / electronic device connecting member of the present invention, 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. By this method of manufacturing the electrical / electronic device connecting member (referred to as the manufacturing method of the present invention), 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. Even if the joining allowance at the end is narrowed, 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.
 本発明の製造方法においては、まず、電気・電子機器用部材及び接続用部材を準備若しくは作製する。
 本発明の製造方法に用いる、電気・電子機器用部材及び接続用部材は上述の通りである。接続用部材は、上述の材料を用いて、金属部材の通常の製造方法、例えば、金属の溶湯を所定寸法の鋳型に流延する方法、旋削や研磨、裁断等により、作製できる。
 電気・電子機器用部材として絶縁電線材を溶接する場合、その端部は外周絶縁層を除去(ストリッピング(剥離除去))することが好ましい。これにより、溶接時における、ススやブローホール等の発生による溶接強度の低下や電気抵抗の上昇を抑制することができる。絶縁電線材のストリッピング方法は通常の方法を特に制限されることなく適用できる。なお、多芯導体を有する絶縁電線材を溶接する場合、多芯導体における分割導体間の導体絶縁層は通常剥離除去できず残存するため、後述するファイバレーザ溶接法を適用することが好ましい。
In the manufacturing method of the present invention, first, a member for electrical / electronic equipment and a member for connection are prepared or manufactured.
The members for electrical and electronic devices and the members for connection used in the manufacturing method of the present invention are as described above. The connecting member can be manufactured by using the above-mentioned materials by a usual manufacturing method of a metal member, for example, a method of casting a molten metal into a mold having a predetermined size, turning, polishing, cutting, or the like.
When an insulated electric wire material is welded as a member for an electric / electronic device, it is preferable to remove the outer peripheral insulating layer (stripping (peeling removal)) at the end portion thereof. As a result, it is possible to suppress a decrease in welding strength and an increase in electrical resistance due to the generation of soot, blow holes, etc. during welding. The stripping method of the insulated wire material can be applied without any particular limitation to the usual method. When welding an insulated wire material having a multi-core conductor, 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.
 本発明の製造方法においては、電気・電子機器用部材の対面配置された導体端部に、導体端部の位置ズレ拘束部を有する接続用部材を装着する。
 準備した電気・電子機器用部材(例えば絶縁電線材)を上述のようにして導体の端部同士を対面配置する。次いで、対面配置した導体端部に接続用部材を装着する。接続用部材の装着は導体端部の対面配置状態及び接続用部材に応じて適宜に行う。接続用部材の装着により導体端部の対面配置状態が拘束される。
 本発明の製造方法において、導体端部の対面配置、及び/又は、導体端部への接続用部材の装着は、電気・電子機器に実装する前に行っても、実装した後に行ってもよい。
In the manufacturing method of the present invention, 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.
The prepared members for electrical and electronic equipment (for example, an insulated electric wire material) are arranged so that the ends of the conductors face each other as described above. Next, the connecting member is attached to the end of the conductor arranged facing each other. The connecting member is appropriately attached according to the facing arrangement of the conductor ends and the connecting member. The mounting of the connecting member constrains the facing arrangement of the conductor ends.
In the manufacturing method of the present invention, the facing arrangement of the conductor ends and / or the mounting of the connecting member to the conductor ends may be performed before or after mounting on the electric / electronic device. ..
 本発明の製造方法においては、次いで、導体端部に装着した接続用部材と、導体端部とを接合する。
 導体端部と接続用部材との接合は、通常の方法を特に制限されることなく適用でき、例えば、通常用いられる各種導電性接着剤、導電性接着シート等を用いた接着法、各種溶接法が挙げられる。中でも、接合強度等に優れる点で、溶接法が好ましい。溶接法としては、TIG溶接(Tungsten Insert Gas溶接)等が挙げられるが、レーザのエネルギー密度が高く、しかも溶接部が20mm程度必要なTIG溶接に対してレーザを20μm程度の狭い幅に照射できるファイバレーザ溶接が好ましい。このファイバレーザ溶接法は、高いエネルギー密度によって、電気・電子機器用部材が有する樹脂部材(絶縁電線材においては導体絶縁層や外周絶縁層)を形成する樹脂等を溶接時に焼失させることができ、溶接時に発生、残存するススやブローホールによる問題の発生(溶接強度低下等)を回避できる。更には、ファイバレーザでは低セントリックレンズシステムを用いることで処理時間の短縮が可能となり、量産の際に有利である。ファイバレーザ溶接は、熱伝導型レーザ溶接でもよいが、深溶け込み型溶接(キーホール溶接)とすることが好ましい。
In the manufacturing method of the present invention, the connecting member attached to the conductor end is then joined to the conductor end.
The joining of the conductor end and the connecting member can be applied without particular limitation to the usual methods. For example, various commonly used conductive adhesives, bonding methods using conductive adhesive sheets, and various welding methods. Can be mentioned. Of these, the welding method is preferable because it is excellent in joint strength and the like. Examples of the welding method include TIG welding (Tungsten Insert Gas welding), which is a fiber capable of irradiating a laser in a narrow width of about 20 μm for TIG welding in which the energy density of the laser is high and the welded portion requires about 20 mm. Laser welding is preferred. This fiber laser welding method can burn off the resin or the like forming the resin member (conductor insulating layer or outer peripheral insulating layer in the case of insulated wire material) of the member for electric / electronic equipment by high energy density at the time of welding. It is possible to avoid the occurrence of problems (decrease in welding strength, etc.) due to soot and blow holes that occur during welding and remain. Further, in the fiber laser, the processing time can be shortened by using the low-centric lens system, which is advantageous in mass production. The fiber laser welding may be a thermal conductivity type laser welding, but is preferably a deep penetration type welding (keyhole welding).
 接合条件は、接合方法、更には用いる材料若しくは照射するレーザの種類等に応じて通常の条件が選択される。
 例えば、ファイバレーザ溶接法には、ファイバレーザ溶接装置として、発振波長が1084nm(シングルモード発振レーザ光)のファイバレーザ溶接装置「ASF1J23」(商品名、古河電気工業社製)、500W、CWファイバレーザ等を用いることができる。溶接条件は、電気・電子機器用部材の種類等に応じて適宜に設定されるが、その一例を挙げると、レーザビーム出力を300~500W、レーザ光の掃引速度を50~250mm/sec.、焦点位置のレーザ光スポット径を20μmに調整して、ジャストフォーカスにてレーザ光照射を行う。溶接条件は、例えば電気・電子機器用部材として絶縁電線材を用いる場合、導体の本数、材質等によって適宜変更され、例えば、後述する実施例で製造した絶縁電線材と接続用部材との溶接では、レーザ光の掃引速度は、レーザビーム出力を300~500Wに設定する場合、100~200mm/sec.に設定される。照射時間は、溶接可能な時間に設定され、他の照射条件によって一義的に決定されないが、例えば、0.01~10秒とすることができる。
 ファイバレーザの光照射方法は、導体端部と接続用部材とを溶接できれば特に制限されない。ファイバレーザは、通常、導体端部に装着した接続用部材から導体端部に向けて照射され、接続用部材及び導体端部を溶融混合して貫通溶接する。ファイバレーザの照射方向は、特に限定されないが、導体端部の軸線又は接続用部材の軸線方向から接続用部材に向けて照射する。ファイバレーザの照射はスポット照射でもよく、ファイバレーザを軸線に垂直な方向に沿って連続的又は間欠的に掃引(走査)して線状又は面状に照射することもできる。
 この溶接により、レーザ光照射面(接続用部材の表面)からその反対の裏面に至るまで接続用部材及び導体端部の端面近傍が溶融、固化して一体化することにより、接合される。
 本発明の製造方法において、接合は、通常、導体端部と接続用部材の接合基部とを行うが、導体端部と接合基部以外の部分、例えば上記裾部とを行うこともできる。ただし、導体端部と裾部との接合は、接続用部材による位置ズレ拘束機能を補強する仮接合として行い、導体端部と接合基部との接合を本接合とすることが好ましい。
As the bonding conditions, ordinary conditions are selected according to the bonding method, the material used, the type of laser to be irradiated, and the like.
For example, in the fiber laser welding method, as a fiber laser welding device, a fiber laser welding device "ASF1J23" (trade name, manufactured by Furukawa Denki Kogyo Co., Ltd.) with an oscillation wavelength of 1084 nm (single mode oscillation laser light), 500 W, CW fiber laser Etc. can be used. Welding conditions are appropriately set according to the types of members for electrical and electronic equipment, and examples thereof include a laser beam output of 300 to 500 W and a laser light sweep speed of 50 to 250 mm / sec. , The laser light spot diameter at the focal position is adjusted to 20 μm, and laser light irradiation is performed with just focus. For example, when an insulated wire material is used as a member for electrical / electronic equipment, the welding conditions are appropriately changed depending on the number of conductors, the material, and the like. The sweep speed of the laser beam is 100 to 200 mm / sec. When the laser beam output is set to 300 to 500 W. Is set to. The irradiation time is set to a weldable time and is not uniquely determined by other irradiation conditions, but can be, for example, 0.01 to 10 seconds.
The light irradiation method of the fiber laser is not particularly limited as long as the conductor end and the connecting member can be welded. 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.
By this welding, 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.
In the manufacturing method of the present invention, 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. However, it is preferable that 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.
 この接合工程により、導体端部と接続用部材とが接合され、これに伴い、対面配置された導体端部同士も(接続用部材を介して)接合される。
 こうして接合された電気・電子機器接続部材は、接合時若しくは接合中に導体端部同士の対面配置状態が拘束され、少なくとも導体端部同士が高強度かつ低抵抗で狭小化された接合代(例えば溶接代、溶接部)で接合されている。
 上述の優れた特性を示す本発明の電気・電子機器接続部材は、電気・電子機器に適用することができ、例えば、電話機用電線、トランス用電線、ハイブリッド自動車若しくは電気自動車のモータを構成するコイルに適用することが好適である。例えば、回転電機(モータ)の固定子のコイルを形成する巻線として用いることができる。
 本発明の電気・電子機器接続部材を用いたコイルは、電気・電子機器に用いられることにより、電気・電子機器の小型化、高性能化を実現できる。また、多芯導体を有する絶縁電線材を接合した本発明の電気・電子機器接続部材を用いたコイルは、高周波領域においても渦電流損失が小さな電気・電子機器を実現できる。
By this joining step, the conductor end portion and the connecting member are joined, and accordingly, the conductor end portions arranged facing each other are also joined (via the connecting member).
In the electrical / electronic device connecting member joined in this way, the facing arrangement state of the conductor ends is restricted at the time of joining or during joining, and at least the conductor ends are narrowed with high strength and low resistance (for example). Welding allowance, welded part) are joined.
The electric / electronic device connecting member of the present invention exhibiting the above-mentioned excellent characteristics can be applied to electric / electronic devices, for example, electric wires for telephones, electric wires for transformers, and coils constituting motors of hybrid vehicles or electric vehicles. It is preferable to apply to. For example, it can be used as a winding forming a coil of a stator of a rotary electric machine (motor).
The coil using the electric / electronic device connecting member of the present invention can realize miniaturization and high performance of the electric / electronic device by being used in the electric / electronic device. Further, the coil using the electric / electronic device connecting member of the present invention in which an insulated electric wire material having a multi-core conductor is joined can realize an electric / electronic device having a small eddy current loss even in a high frequency region.
[コイル及び電気・電子機器]
 本発明の電気・電子機器接続部材は、コイルとして、各種電気・電子機器など、電気特性(耐電圧性)や耐熱性を必要とする分野に利用可能である。例えば、本発明の電気・電子機器接続部材はモータやトランス等に用いられ、高性能の電気・電子機器を構成できる。特にハイブリッドカー(HV)及び電気自動車(EV)の駆動モータ用の巻線として好適に用いられる。このように、本発明によれば、本発明の電気・電子機器接続部材をコイルにして提供でき、そのコイルを用いた電気・電子機器として、特にHEVやEVの駆動モータを提供できる。
[Coil and electrical / electronic equipment]
The electric / electronic device connecting member of the present invention can be used as a coil in fields that require electrical characteristics (withstand voltage) and heat resistance, such as various electric / electronic devices. For example, the electric / electronic device connecting member of the present invention can be used for a motor, a transformer, or the like to form a high-performance electric / electronic device. In particular, it is suitably used as a winding for a drive motor of a hybrid car (HV) and an electric vehicle (EV). As described above, according to the present invention, the electric / electronic device connecting member of the present invention can be provided as a coil, and as an electric / electronic device using the coil, an HEV or an EV drive motor can be particularly provided.
 本発明のコイルは、少なくとも1つの本発明の電気・電子機器接続部材を有しており、好ましくは電気・電子機器用部材として複数の配線材が上記接続用部材により接合された電気・電子機器接続部材を有している。
 本発明のコイルは、各種電気・電子機器に適した形態を有していればよく、本発明の電気・電子機器接続部材をコイル加工して形成したもの、本発明の電気・電子機器接続部材を曲げ加工した後に所定の部分を電気的に接続してなるもの等が挙げられる。
 本発明の電気・電子機器接続部材をコイル加工して形成したコイルとしては、特に限定されず、長尺の電気・電子機器接続部材(絶縁電線材)を螺旋状に巻き回したものが挙げられる。このようなコイルにおいて、絶縁電線材の巻線数等は特に限定されない。通常、絶縁電線材を巻き回す際には鉄芯等が用いられる。
The coil of the present invention has at least one electric / electronic device connecting member of the present invention, and preferably, as a member for the electric / electronic device, a plurality of wiring materials are joined by the connecting member. It has a connecting member.
The coil of the present invention may have a form suitable for various electric / electronic devices, and is formed by coiling the electric / electronic device connecting member of the present invention, or the electric / electronic device connecting member of the present invention. For example, a predetermined portion is electrically connected after being bent.
The coil formed by coiling the electric / electronic device connecting member of the present invention is not particularly limited, and examples thereof include a coil in which a long electric / electronic device connecting member (insulated electric wire material) is spirally wound. .. In such a coil, the number of windings of the insulated wire material is not particularly limited. Usually, an iron core or the like is used when winding an insulated electric wire material.
 例えば、図9に示すコイル40は、本発明の電気・電子機器接続部材として多芯導体を有する絶縁電線材を用いた例である。このコイル40は、コア41に形成された溝42内に本発明の絶縁電線材10Fを1巻又は複数回巻いて、形成したものである。なお、コイル40に用いた電気・電子機器接続部材としての絶縁電線材10Fは、図8及び図9に示すように、外周を被覆する導体絶縁層12を有する3本の分割導体11を積層した多芯導体13と多芯導体13の外周を被覆する外周絶縁層14とを有しているが、本発明はこれに限定されず、単芯導体を有する絶縁電線材を用いることもできる。 For example, 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. As shown in FIGS. 8 and 9, 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. Although it has a multi-core conductor 13 and an outer peripheral insulating layer 14 that covers the outer periphery of the multi-core conductor 13, the present invention is not limited to this, and an insulated electric wire material having a single-core conductor can also be used.
 この絶縁電線材を曲げ加工した後に所定の部分を電気的に接続してなるものとして、回転電機等のステータに用いられるコイルが挙げられる。このようなコイルは、例えば、図10及び図11に示されるように、短尺状の絶縁電線材をU字形状等に曲げ加工して複数の電線セグメント54を作製する。そして、各電線セグメント54のU字形状等の2つの開放端部54aを互い違いに接続(溶接)してなるコイル53(図11参照)が挙げられる。 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. In such 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.
 このコイルを用いてなる電気・電子機器としては、特に限定されない。このような電気・電子機器の好ましい一態様として、例えば、図11に示すステータ50を備えた回転電機(特にHV及びEVの駆動モータ)が挙げられる。この回転電機は、ステータ50を備えていること以外は、従来の回転電機と同様の構成とすることができる。
 ステータ50は、電線セグメント54(図10参照)が本発明の電気・電子機器用部材(好ましくは短尺状の絶縁電線材)で形成されていること以外は従来のステータと同様の構成とすることができる。すなわち、ステータ50は、ステータコア51と、例えば図10に示すように、本発明の電気・電子機器用部材からなる電線セグメント54がステータコア51のスロット52に組み込まれる。そして、開放端部54aが電気的に接続されてコイル53(図11参照)を形成する。ここで、ステータ50において、電線セグメント54は、スロット52に1本で組み込まれてもよいが、好ましくは図10に示したように2本一組として組み込まれる。このステータ50は、上記のように曲げ加工した電線セグメント54の2つの末端である開放端部54aを互い違いに接続してなるコイル53が、ステータコア51のスロット52に収納されている。このとき、電線セグメント54の開放端部54aを接続してからスロット52に収納してもよく、また、絶縁セグメント54をスロット52に収納した後に、電線セグメント54の開放端部54aを折り曲げ加工して接続してもよい。開放端部54aの接続は、対面配置した開放端部54a(導体端部)に接続用部材を装着して接合する、上述の本発明の製造方法、特にファイバレーザ溶接により、行われる。
The electric / electronic device using this coil is not particularly limited. As a preferable aspect of such an electric / electronic device, for example, a rotary electric machine (particularly an HV and EV drive motor) provided with the stator 50 shown in FIG. 11 can be mentioned. The rotary electric machine can have the same configuration as the conventional rotary electric machine except that the rotary electric machine is provided with the stator 50.
The stator 50 has the same configuration as the conventional stator except that the electric wire segment 54 (see FIG. 10) is formed of the member for electrical / electronic equipment of the present invention (preferably a short insulated electric wire material). Can be done. That is, in the stator 50, 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). Here, in the stator 50, 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. In the stator 50, 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. At this time, 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.
 ステータ50は、本発明の製造方法により絶縁電線材の開放端部54aが電気的に接続されているため、その接続部分の狭小化できる。しかも、接続部分の狭小化によっても高い接続強度で電気抵抗の上昇を抑制して接続されている。そのため、ステータ50は、小型化、高性能化を実現できる。
 また、絶縁電線材10Fは、多芯導体を用いているため、例えば、ステータコアのスロット断面積に対する導体の断面積の比率(占積率)を高めることができ、更なる高性能化を達成できる。
Since the open end portion 54a of the insulating electric wire material is electrically connected to the stator 50 by the manufacturing method of the present invention, the connecting portion can be narrowed. Moreover, even if the connection portion is narrowed, the connection strength is high and the increase in electrical resistance is suppressed. Therefore, the stator 50 can be miniaturized and have high performance.
Further, since the insulated wire material 10F uses a multi-core conductor, for example, the ratio of the cross-sectional area of the conductor to the slot cross-sectional area of the stator core (occupancy ratio) can be increased, and further high performance can be achieved. ..
 以下に、本発明を実施例に基づいて、更に詳細に説明するが、本発明はこれらに限定されない。 Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited thereto.
 [実施例1]
 本例では、図1及び図2に示した電気・電子機器接続部材1を作製した。
 まず、電気・電子機器接続部材1の作製に用いる絶縁電線材10Aを製造した。具体的には、酸素含有量20ppm以下の無酸素銅を用いて、3.66×2.12mm(幅×厚さ)で四隅を曲率半径r=0.10mmで面取りしてなる平角形状の単芯導体16を作製した。単芯導体16の外周に、導体絶縁層12(図1及び図2において図示しない)を熱可塑性樹脂のポリエーテルイミド(PEI)で形成した。導体絶縁層12の形成に際しては、単芯導体16の形状と相似形のダイスを使用して、PEIワニスを単芯導体16の外周にコーティングした。PEIワニスを塗布した単芯導体16について、450℃に設定した炉長8mの焼付炉内を、焼き付け時間15秒となる速度で通過させた。PEIワニスは、PEI(サビックイノベーティブプラスチックス社製、商品名:ウルテム1010)をN-メチル-2-ピロリドン(NMP)に溶解させて調製した。焼き付け工程で厚さ3μmのポリエーテルイミド層を形成した。こうして、被膜厚さ3μmの導体絶縁層12で外周面を被覆した単芯導体16(エナメル素線)を得た。
[Example 1]
In this example, the electrical / electronic device connecting member 1 shown in FIGS. 1 and 2 was manufactured.
First, the insulated wire material 10A used for manufacturing the electrical / electronic device connecting member 1 was manufactured. Specifically, using oxygen-free copper having an oxygen content of 20 ppm or less, the four corners are chamfered with a radius of curvature r = 0.10 mm at 3.66 × 2.12 mm (width × thickness). A core conductor 16 was produced. A conductor insulating layer 12 (not shown in FIGS. 1 and 2) was formed of a thermoplastic resin, polyetherimide (PEI), on the outer periphery of the single-core conductor 16. When forming the conductor insulating layer 12, 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 Innovative Plastics, trade name: Ultem 1010) in N-methyl-2-pyrrolidone (NMP). A polyetherimide layer having a thickness of 3 μm 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 μm was obtained.
 こうして作製した導体絶縁層12付き単芯導体16の外周に押出成形により熱可塑性樹脂の外周絶縁層14を形成した。
 押出機のスクリューは、30mmフルフライト、L/D=20、圧縮比3を用いた。押出機内のシリンダー温度を、樹脂投入側から順に3ゾーンの温度、300℃、380℃、380℃とし、またヘッド部の温度を390℃、ダイス部の温度を400℃とした。外周絶縁層14の熱可塑性樹脂としてはポリエーテルエーテルケトン(PEEK:ソルベイスペシャリティポリマーズ製、商品名:キータスパイアKT-820、比誘電率3.1、融点343℃)を用いた。
 押出ダイを用いてポリエーテルエーテルケトンの押出被覆を行った後、10秒間、放置してから水冷した。こうして、導体絶縁層12の外周に厚さ50μmの外周絶縁層14を形成し、断面の大きさが3.77mm(幅)×2.23mm(高さ)で、長さが30cmの絶縁電線材10Aを得た。
 更に、絶縁電線材の一端面から10mmまでの単芯導体16の外周に被覆された外周絶縁層14及び導体絶縁層12を除去した。
An outer peripheral insulating layer 14 of a thermoplastic resin was formed on the outer periphery of the single-core conductor 16 with the conductor insulating layer 12 thus produced by extrusion molding.
The screw of the extruder used was 30 mm full flight, L / D = 20, and a compression ratio of 3. The cylinder temperature in the extruder was set to the temperature of three zones, 300 ° C., 380 ° C., 380 ° C., the temperature of the head portion was set to 390 ° C., and the temperature of the die portion was set to 400 ° C. in order from the resin charging side. As the 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 μm 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.
 一方、酸素含有量20ppm以下の無酸素銅板(厚さ1.0mm)をプレス加工して、図1及び2に示す接続用部材20Aを作製した。接続用部材20A及び有底孔21はいずれも直方体形状である。
 この接続用部材20Aの寸法を示す。
 縦(図1における横方向の寸法):5.8mm
 横(奥行に相当し、図2における横方向の寸法):6.5mm
 高さ:10mm
 有底孔21の縦:3.8mm(周壁部23aの厚さ1.0mm)
 有底孔21の横:4.5mm(周壁部23aの厚さ1.0mm)
 有底孔21の深さ:5mm(接合基部22aの厚さ5mm)
On the other hand, an oxygen-free copper plate (thickness 1.0 mm) having an oxygen content of 20 ppm or less was press-processed to prepare the connecting member 20A shown in FIGS. 1 and 2. Both the connecting member 20A and the bottomed hole 21 have a rectangular parallelepiped shape.
The dimensions of this connecting member 20A are shown.
Vertical (horizontal dimension in FIG. 1): 5.8 mm
Width (corresponding to depth, horizontal dimension in FIG. 2): 6.5 mm
Height: 10 mm
Length of bottomed hole 21: 3.8 mm (thickness of peripheral wall portion 23a 1.0 mm)
Width of bottomed hole 21: 4.5 mm (thickness of peripheral wall portion 23a 1.0 mm)
Depth of bottomed hole 21: 5 mm (thickness of joint base 22a 5 mm)
 次いで、2本の絶縁電線材10Aを並列に配置して、絶縁電線材10Aの導体端部(両絶縁層12及び14を剥離した導体表面)同士を、対面配置した。このとき2つの導体端部間の対面離間距離は0.2mmであった。
 対面配置させた導体端部を、上記作製した接続用部材20Aの有底孔21の底面に突き当たるまで挿入(圧入)して、導体端部に接続用部材20Aを装着した。このとき、単芯導体16の幅方向を有底孔21の縦方向に沿う方向に、単芯導体16の厚さ方向を有底孔21の横方向に沿う方向に、それぞれ配置して、挿入した。このとき、有底孔21の底面が導体端部の軸線方向への導体端部の位置ズレを拘束する位置ズレ拘束部として機能する。具体的には、この底面が単芯導体16の対面配置された端部(端面)に接し、かつ有底孔21の周壁23aの内周面が単芯導体16の対面配置された端部側面に接して、単芯導体16それぞれの軸線方向の位置ズレを拘束している。また、周壁23aの内周面が導体端部の軸線に交差する方向への導体端部の位置ズレを拘束する位置ズレ拘束部として機能する。具体的には、この内周面が単芯導体16の対面配置された端部側面に接して、単芯導体16それぞれの軸線方向の位置ズレを拘束している。単芯導体16の端部同士の対面距離が広がる方向への位置ズレ、及び単芯導体16の端部同士の重なりが変化する方向への位置ズレを拘束している。こうして、導体端部の、軸線方向への位置ズレ及び軸線方向に交差する方向への位置ズレを拘束した。導体端部の拘束状態は、接続用部材20Aを装着した絶縁電線材10Aの固定状態により確認した。
Next, two insulating electric wire materials 10A were arranged in parallel, and the conductor ends of the insulated electric wire material 10A (the surface of the conductor from which both the insulating layers 12 and 14 were peeled off) were arranged facing each other. At this time, the facing distance between the two conductor ends was 0.2 mm.
The conductor end portions arranged facing each other were inserted (press-fitted) until they hit the bottom surface of the bottomed hole 21 of the connection member 20A produced above, and the connection member 20A was attached to the conductor end portion. At this time, the width direction of the single-core conductor 16 is arranged along the vertical direction of the bottomed hole 21, and the thickness direction of the single-core conductor 16 is arranged along the lateral direction of the bottomed hole 21. did. At this time, the bottom surface of the bottomed hole 21 functions as a position shift restraining portion that restrains the position shift of the conductor end portion in the axial direction of the conductor end portion. Specifically, the bottom surface is in contact with the facingly arranged ends (end faces) of the single-core conductor 16, and the inner peripheral surface of the peripheral wall 23a of the bottomed hole 21 is the facing-facing end side surfaces of the single-core conductor 16. In contact with, 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. It restrains the positional deviation in the direction in which the facing distance between the ends of the single-core conductor 16 increases, and the positional deviation in the direction in which the overlap between the ends of the single-core conductor 16 changes. In this way, the positional deviation of the conductor end portion in the axial direction and the positional deviation in the direction intersecting the axial direction were restrained. The restrained state of the conductor end was confirmed by the fixed state of the insulated wire material 10A to which the connecting member 20A was attached.
 次いで、接続用部材20Aの軸線方向外部から接続用部材20Aに向けて、ファイバレーザを照射して溶接することにより、導体端部同士を(接続用部材20Aを介して)溶接して、2本の絶縁電線材10Aからなる電気・電子機器接続部材1を製造した。
 ファイバレーザ溶接条件は以下の通りである。
Next, 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.
<ファイバレーザ溶接条件>
レーザ溶接装置:ASF1J23(商品名、古河電気工業社製)、500W、CWファイバレーザ
レーザビーム出力:300W
発振波長:1084nm(シングルモード発振レーザ光)
掃引速度:100mm/sec.
焦点位置のレーザ光スポット径:20μm
全条件ジャストフォーカスでレーザ光照射
レーザ光照射位置:接続用部材の軸線方向外部から接続用部材に向けて(図1及び図2の上方から下方に向けて)照射する
レーザ光の掃引条件:底部22aの表面中央部を開始点として単芯導体の厚さ方向(図2の左右方向)に沿って底部22aの各端縁まで1秒間で掃引
<Fiber laser welding conditions>
Laser welding equipment: ASF1J23 (trade name, manufactured by Furukawa Electric Co., Ltd.), 500W, CW fiber laser laser beam output: 300W
Oscillation wavelength: 1084 nm (single mode oscillation laser light)
Sweep rate: 100 mm / sec.
Laser light spot diameter at focal position: 20 μm
All conditions Just focus laser light irradiation Laser light irradiation position: Axial direction of connecting member Laser light to irradiate from outside toward the connecting member (from top to bottom in FIGS. 1 and 2) Sweeping condition: Bottom Sweeping from the center of the surface of 22a to each end edge of the bottom 22a along the thickness direction of the single-core conductor (left-right direction in FIG. 2) in 1 second.
 [実施例2~4]
 レーザ光出力、レーザ光の掃引速度及び照射時間を表1に記載した値にした以外は実施例1と同様にして、実施例2~4の電気・電子機器接続部材1をそれぞれ得た。
[Examples 2 to 4]
The electrical / electronic device connecting members 1 of Examples 2 to 4 were obtained in the same manner as in Example 1 except that the laser light output, the laser light sweeping speed, and the irradiation time were set to the values shown in Table 1.
 [実施例5及び6]
 接続用部材20Aの底部22aの内表面に錫層を厚さ1μmにめっきしたものを用いたこと以外は、実施例1又は2と同様にして、実施例5及び6の電気・電子機器接続部材1を得た。
[Examples 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 μm was used on the inner surface of the bottom portion 22a of the connecting member 20A. I got 1.
 [実施例7]
 実施例1で作製した、絶縁電線材10A及び接続用部材20Aを、導電性接着剤:TKペースト CR-2800(商品名、化研テック社製)により、接合した。
 すなわち、導電性接着剤を端子部に塗布し、その後接続部材を被せて、120℃30分にて硬化させた。
[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.
 [比較例1]
 実施例1と同様にして30cmの絶縁電線材10Aを作製した後、絶縁電線材10Aの一端面から20mmまでの単芯導体16の外周に被覆された外周絶縁層14及び導体絶縁層12を除去した。この絶縁電線材10Aの導体端部同士を対面配置した状態でレーザ溶接機器の保持機構で固定した。固定箇所は、単芯導体の端縁から15mmの位置とした。こうして対面状態を固定した状態で、実施例1と同様(レーザ溶接条件も同じ)にして、レーザ照射して、比較例1の電気・電子機器接続部材を製造した。
 [比較例2]
 実施例1と同様にして、30cmの絶縁電線材10Aを作製した後、絶縁電線材10Aの一端面から10mmまでの単芯導体16の外周に被覆された外周絶縁層14及び導体絶縁層12を除去した。この絶縁電線材10Aを対面配置した状態で導体端部に直接(接続用部材を装着せずに)ファイバレーザを照射したこと以外は、実施例1と同様にして、比較例2の電気・電子機器接続部材を製造した。ただし、両絶縁層の存在によるブローホール等の発生を防止するため、レーザビーム出力を30W、照射時間を10秒とした。
[Comparative Example 1]
After producing the insulated wire material 10A of 30 cm in the same manner as in Example 1, 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 20 mm from one end surface of the insulated wire material 10A are removed. did. The conductor ends of the insulated wire material 10A were fixed to each other by a holding mechanism of a laser welding device in a state where they were arranged facing each other. The fixing location was set at a position 15 mm from the edge of the single-core conductor. 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. However, 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.
<溶接部の確認>
 各実施例(実施例7を除く)で製造した各電気・電子機器接続部材における溶接部を、レーザ光照射部(中央部)を含む平面で、切断した断面を光学顕微鏡により観察した。その結果、接続用部材から2本の単芯導体端部まで溶接部(貫通溶接部)が形成されており、2本の単芯導体が接続用部材の底部を介して溶接されていることを確認することができた。
<Confirmation of welded part>
A cross section of the welded portion of each electrical / electronic device connecting member manufactured in each example (excluding Example 7) cut in a plane including the laser beam irradiation portion (central portion) was observed with an optical microscope. As a result, a welded portion (through welded portion) is formed from the connecting member to the ends of the two single-core conductors, and the two single-core conductors are welded through the bottom of the connecting member. I was able to confirm.
 このようにして製造した、実施例1~7、比較例1及び2の電気・電子機器接続部材について以下の評価を行った。その評価結果を表1に示す。 The following evaluations were performed on the electrical / electronic device connecting members of Examples 1 to 7 and Comparative Examples 1 and 2 manufactured in this manner. The evaluation results are shown in Table 1.
<導体端部と接続用部材との接合強度の測定>
 各実施例及び比較例と同様にして各3本ずつ作製した電気・電子機器接続部材について、JIS Z 2241:2011に準拠して、2本の単芯導体(絶縁電線材)と接続用部材とをそれぞれ把持して引張試験を行って引張強度を測定し、それらの平均値を求めて、電気・電子機器接続部材の接合強度とした。
 接合強度が300MPa以上であれば、2本の単芯導体(絶縁電線材)と接続用部材とが強固に接合しているものとして「G」と判定した。一方、溶接が300MPa未満であれば、接合強度が不足しているものとして「N」と判定した。合格は「G」判定とした。表1には測定値と判定結果を併記した。
<Measurement of joint strength between conductor end and connecting member>
Regarding the electrical / electronic device connecting members manufactured in the same manner as in each of the examples and the comparative examples, two single-core conductors (insulated electric wire materials) and connecting members are used in accordance with JIS Z 2241: 2011. The tensile strength was measured by grasping each of them and performing a tensile test, and the average value thereof was calculated and used as the joint strength of the electrical / electronic device connecting member.
When the bonding strength was 300 MPa or more, it was determined to be "G" as if the two single-core conductors (insulated wire materials) and the connecting member were firmly bonded. On the other hand, if the welding was less than 300 MPa, it was judged as "N" as having insufficient joint strength. Pass was judged as "G". Table 1 shows the measured values and the judgment results.
<ブローホールの有無確認試験>
 上記<溶接部の確認>において切り出した断面領域(溶接後に単芯銅体及び接続用部材の銅が溶融した部分(溶接部))を、光学顕微鏡によって観察し、直径0.1mm以上のブローホール数を数えた。
 ブローホール数が10個以下であれば、ファイバレーザでの溶接性(特に電気抵抗の上昇を抑制する特性)に優れているとして「G」、合格と判定した。一方、ブローホール数が10個を超える場合は、溶接性が劣るとして「N」、不合格と判定した。
<Blow hole presence confirmation test>
The cross-sectional area cut out in the above <confirmation of welded portion> (the portion where the copper of the single-core copper body and the connecting member is melted after welding (welded portion)) is observed with an optical microscope, and a blow hole having a diameter of 0.1 mm or more is observed. I counted the number.
When the number of blow holes is 10 or less, it is judged as "G" as having excellent weldability with a fiber laser (particularly, a characteristic of suppressing an increase in electrical resistance), and is judged to be acceptable. On the other hand, when the number of blow holes exceeds 10, it is judged as "N" because the weldability is inferior, and it is judged as rejected.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
 表1から以下のことが分かる。
 すなわち、従来の溶接加工法を採用した比較例1は、対面配置させた導体端部同士を保持機構でその対面配置状態を保持するため、対面配置する導体端部を長くする必要がある。その結果、溶接強度及びブローホール発生試験に合格しても(高強度及び低抵抗で溶接が可能であっても)、溶接代を含む対面配置長さを狭小化及び短小化できず、電気・電子機器の小型化、高性能化等の要求に十分に応えることはできない。
 一方、対面配置する導体端部を短くして接続用部材を用いずに溶接した比較例2は、電気・電子機器の小型化、高性能化等に寸法的に適用可能であったとしても、溶接時及び溶接時に対面配置状態が変動して、高強度及び低抵抗で導体端部同士を溶接することができず、そもそも電気・電子機器接続部材として十分なものではない。
 これに対して、実施例1~6は、いずれも、接続用部材により導体端部の対面配置状態の位置ズレを効果的に拘束することができ、導体端部の対面配置長さ(溶接代)を短くしても、導体端部同士を高強度及び低抵抗で溶接することができる。また、実施例7は、導電性接着剤を用いて接合しているが、導体端部の対面配置状態の位置ズレを効果的に拘束できていたため、300MPaという十分な接合強度を達成できる。このように、導体端部の対面配置長さを短くして2本の絶縁電線材の溶接代若しくは接着代(実施例では絶縁層を皮むきした長さ)を短くできると、溶接強度が安定して信頼性の向上も達成できる。以上の結果から、本発明の電気・電子機器接続部材は、寸法的にも、また特性的(強度及び抵抗、更には適宜信頼性)にも、電気・電子機器の小型化、高性能化等の要求に十分に応えることができる。よって、実施例1~7の各電気・電子機器接続部材をコイル又は電気・電子機器に適用すると、小型化、高性能化を実現することができる。
The following can be seen from Table 1.
That is, in Comparative Example 1 in which the conventional welding processing method is adopted, in order to hold the facing arrangement state of the conductor ends arranged facing each other by the holding mechanism, it is necessary to lengthen the conductor ends arranged facing each other. As a result, even if the welding strength and the blow hole generation test are passed (even if welding is possible with high strength and low resistance), the face-to-face arrangement length including the welding allowance cannot be narrowed or shortened. It is not possible to fully meet the demands for miniaturization and high performance of electronic devices.
On the other hand, Comparative Example 2 in which the end portions of the conductors arranged facing each other are shortened and welded without using a connecting member is dimensionally applicable to miniaturization, high performance, etc. of electrical / electronic equipment. The face-to-face arrangement state fluctuates during welding and during welding, and conductor ends cannot be welded to each other with high strength and low resistance, which is not sufficient as an electrical / electronic device connecting member in the first place.
On the other hand, in each of Examples 1 to 6, the positional deviation of the conductor end portion in the facing arrangement state can be effectively restrained by the connecting member, and the facing arrangement length of the conductor end portion (welding allowance). ) Can be shortened, but the conductor ends can be welded together with high strength and low resistance. Further, in Example 7, although the bonding is performed by using a conductive adhesive, since the positional deviation of the conductor end portions in the facing arrangement state can be effectively restrained, a sufficient bonding strength of 300 MPa can be achieved. In this way, if the facing-to-face arrangement length of the conductor ends can be shortened to shorten the welding allowance or the adhesive allowance (the length in which the insulating layer is peeled off in the embodiment) of the two insulated wire materials, the welding strength is stable. Therefore, improvement in reliability can be achieved. From the above results, the electrical / electronic device connecting member of the present invention is dimensionally and characteristically (strength and resistance, and appropriately reliable), such as miniaturization and high performance of the electrical / electronic device. Can fully meet the demands of. Therefore, when each of the electric / electronic device connecting members of Examples 1 to 7 is applied to a coil or an electric / electronic device, miniaturization and high performance can be realized.
 本発明をその実施態様とともに説明したが、我々は特に指定しない限り我々の発明を説明のどの細部においても限定しようとするものではなく、添付の請求の範囲に示した発明の精神と範囲に反することなく幅広く解釈されるべきであると考える。 Although the present invention has been described with its embodiments, we do not intend to limit our invention in any detail of the description unless otherwise specified, and contrary to the spirit and scope of the invention set forth in the appended claims. I think that it should be widely interpreted without.
 本願は、2019年9月27日に日本国で特許出願された特願2019-177508に基づく優先権を主張するものであり、これはここに参照してその内容を本明細書の記載の一部として取り込む。 The present application claims priority based on Japanese Patent Application No. 2019-177508 filed in Japan on September 27, 2019, which is referred to herein and is described herein. Incorporate as a part.
1~6 電気・電子機器接続部材
10A~10F 絶縁電線材(電気・電子機器用部材)
11 分割導体
12 導体絶縁層
13 多芯導体
14 外周絶縁層
16、17a~17c 単芯導体
20A~20F 接続用部材
21 有底孔(凹陥部)
22a、22e 底部(接合基部)
23a、23b 周壁(裾部)
24 輪環状部材
32、34 位置ズレ拘束部(内側突出部)
31 被拘束部(突出部)
33 被拘束部(溝部)
35 被拘束部(ネジ溝状の凹凸)
36 位置ズレ拘束部(ネジ山状の凹凸)
40 コイル
41 コア
42 溝
50 ステータ
51 ステータコア
52 スロット
53 コイル
54 電線セグメント
54a 開放端部(溶接用部材)
1 to 6 Electrical / electronic device connection members 10A to 10F Insulated electric wire material (members for electrical / electronic devices)
11 Divided conductor 12 Conductor insulating layer 13 Multi-core conductor 14 Outer peripheral insulating layer 16, 17a to 17c Single-core conductor 20A to 20F Connecting member 21 Bottomed hole (recessed part)
22a, 22e Bottom (joint base)
23a, 23b peripheral wall (hem)
24- wheel ring member 32, 34 Positional deviation restraint (inner protrusion)
31 Restrained part (protruding part)
33 Restrained part (groove part)
35 Confined part (screw groove-like unevenness)
36 Positional misalignment restraint (thread-shaped unevenness)
40 Coil 41 Core 42 Groove 50 Stator 51 Stator core 52 Slot 53 Coil 54 Wire segment 54a Open end (welding member)

Claims (12)

  1.  対面配置した、電気・電子機器用部材の導体端部と、前記導体端部における対面配置状態の位置ズレ拘束部を有する接続用部材とが接合された電気・電子機器接続部材。 An electrical / electronic device connecting member in which a conductor end portion of an electrical / electronic device member arranged face-to-face and a connecting member having a positional deviation restraint portion in a face-to-face arrangement state at the conductor end portion are joined.
  2.  前記位置ズレ拘束部が導体の軸線方向に交差する方向への前記導体端部の位置ズレを拘束する、請求項1に記載の電気・電子機器接続部材。 The electrical / electronic device connecting member according to claim 1, wherein the misalignment restraining portion restrains the misalignment of the conductor end portion in a direction intersecting the axial direction of the conductor.
  3.  前記位置ズレ拘束部が導体の軸線方向への前記導体端部の位置ズレを拘束する、請求項1又は2に記載の電気・電子機器接続部材。 The electrical / electronic device connecting member according to claim 1 or 2, wherein the misalignment restraining portion restrains the misalignment of the end portion of the conductor in the axial direction of the conductor.
  4.  前記接続用部材が前記導体端部の外側に装着されている、請求項1~3のいずれか1項に記載の電気・電子機器接続部材。 The electrical / electronic device connecting member according to any one of claims 1 to 3, wherein the connecting member is mounted on the outside of the conductor end portion.
  5.  前記導体端部が前記位置ズレ拘束部と係止する被拘束部を有する、請求項1~4のいずれか1項に記載の電気・電子機器接続部材。 The electrical / electronic device connection member according to any one of claims 1 to 4, wherein the conductor end portion has a restrained portion that locks with the misalignment restraining portion.
  6.  前記接続用部材が単一部材又は複数の部材で構成されている、請求項1~5のいずれか1項に記載の電気・電子機器接続部材。 The electrical / electronic device connecting member according to any one of claims 1 to 5, wherein the connecting member is composed of a single member or a plurality of members.
  7.  前記接続用部材が、前記導体端部と接合する接合基部と、前記接合基部の端縁から前記導体端部の側面に沿ってその軸線方向に延在する裾部とを有する、請求項1~6のいずれか1項に記載の電気・電子機器接続部材。 Claims 1 to 1, wherein 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. 6. The electrical / electronic device connecting member according to any one of 6.
  8.  前記接続用部材がレーザ溶接により前記導体端部と接合されている、請求項1~7のいずれか1項に記載の電気・電子機器接続部材。 The electrical / electronic device connecting member according to any one of claims 1 to 7, wherein the connecting member is joined to the conductor end portion by laser welding.
  9.  請求項1~8のいずれか1項に記載の電気・電子機器接続部材の製造方法であって、
     電気・電子機器用部材の対面配置された導体端部に、前記導体端部の位置ズレ拘束部を有する接続用部材を装着し、次いで、前記導体端部と前記接続用部材とを接合する、電気・電子機器接続部材の製造方法。
    The method for manufacturing an electrical / electronic device connecting member according to any one of claims 1 to 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.  前記導体端部と前記接続用部材とをレーザ溶接により接合する、請求項9に記載の電気・電子機器接続部材の製造方法。 The method for manufacturing an electrical / electronic device connecting member according to claim 9, wherein the conductor end portion and the connecting member are joined by laser welding.
  11.  請求項1~8のいずれか1項に記載の電気・電子機器接続部材を有するコイル。 A coil having the electrical / electronic device connecting member according to any one of claims 1 to 8.
  12.  請求項11に記載のコイルを有する電気・電子機器。 An electrical / electronic device having the coil according to claim 11.
PCT/JP2020/033194 2019-09-27 2020-09-02 Electric/electronic device connection member and manufacturing method therefor, coil, and electric/electronic device WO2021059903A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06507756A (en) * 1991-06-03 1994-09-01 シーメンス アクチエンゲゼルシヤフト Welding method for connecting coil windings to terminals, and metal sleeves used in this welding method
JP2000350422A (en) * 1999-03-30 2000-12-15 Denso Corp Manufacture of dynamo-electric machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06507756A (en) * 1991-06-03 1994-09-01 シーメンス アクチエンゲゼルシヤフト Welding method for connecting coil windings to terminals, and metal sleeves used in this welding method
JP2000350422A (en) * 1999-03-30 2000-12-15 Denso Corp Manufacture of dynamo-electric machine

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