WO2015068392A1 - Connecting terminal and electric wiring assembly - Google Patents

Connecting terminal and electric wiring assembly Download PDF

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Publication number
WO2015068392A1
WO2015068392A1 PCT/JP2014/005582 JP2014005582W WO2015068392A1 WO 2015068392 A1 WO2015068392 A1 WO 2015068392A1 JP 2014005582 W JP2014005582 W JP 2014005582W WO 2015068392 A1 WO2015068392 A1 WO 2015068392A1
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WO
WIPO (PCT)
Prior art keywords
flat cable
flexible flat
conductor
connection terminal
connecting portion
Prior art date
Application number
PCT/JP2014/005582
Other languages
French (fr)
Japanese (ja)
Inventor
政宏 奥村
Original Assignee
古河電気工業株式会社
古河As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.)
Filing date
Publication date
Application filed by 古河電気工業株式会社, 古河As株式会社 filed Critical 古河電気工業株式会社
Priority to KR1020167012344A priority Critical patent/KR102172080B1/en
Priority to JP2015546298A priority patent/JP6422442B2/en
Priority to CN201480059746.8A priority patent/CN105684222B/en
Publication of WO2015068392A1 publication Critical patent/WO2015068392A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/70—Insulation of connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/63—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures connecting to another shape cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/65—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal
    • H01R12/69—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures characterised by the terminal deformable terminals, e.g. crimping terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/62—Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors

Definitions

  • the present invention mainly relates to a configuration of a connection terminal for connecting a flexible flat cable and a round wire.
  • a wiring harness (a bundle of a plurality of stranded wires) is used for wiring of other parts. That is, at present, flexible flat cables and stranded wires (round wires) are mixed and wired. For this reason, the structure which connects a flexible flat cable and a twisted wire is needed.
  • Non-Patent Document 1 discloses a connection terminal (referred to as “WF terminal” in Non-Patent Document 1) for connecting a flexible flat cable and a stranded wire.
  • This conventional connection terminal is shown in FIG.
  • a conventional connection terminal 90 shown in FIG. 19 is formed by integrally forming a flexible flat cable connection portion 95 and a stranded wire connection portion 91.
  • the flexible flat cable connecting portion 95 has a plurality of piercings 94 protruding in one direction. By passing this pierce 94 through the flexible flat cable from the thickness direction, the conductor of the flexible flat cable and the connection terminal 90 are electrically connected.
  • the stranded wire connection portion 91 is configured as a so-called open barrel type crimp terminal, and includes a conductor crimp portion 92 and a covering crimp portion 93.
  • the conductor crimping portion 92 is crimped to the stranded conductor.
  • compression-bonding part 93 is crimped
  • connection terminal 90 As described above, the strength of the pierce 94, the conductor crimping portion 92, and the covering crimping portion 93 and the reliability of electrical connection are required. Therefore, as the material of the connection terminal 90, brass or the like that has been used for various terminals has been used.
  • connection terminal 90 With the connection terminal 90 as described above, the conductor of the flexible flat cable and the conductor of the stranded wire can be connected.
  • connection terminal 90 shown in FIG. 19 a hole is made in the conductor and covering of the flexible flat cable by the piercing 94. For this reason, for example, when a pulling force is applied to the flexible flat cable, a force is applied to the hole portion, which may cause the hole to expand or the conductor to break.
  • the conventional connection terminal 90 shown in FIG. 19 has room for improvement in terms of improving the reliability of the flexible flat cable connection portion 95.
  • connection terminal 90 As described above, the strength of the pierce 23, the conductor crimping portion 92, and the covering crimping portion 93 and the reliability of electrical connection are required, and thus there has been a track record of adoption in various terminals. Brass is often used.
  • connection terminal 90 made of brass
  • dissimilar metal contact occurs, so that there is a problem that electrolytic corrosion occurs when moisture is present in the surroundings. For this reason, the stranded wire connecting portion 91 is required to be waterproof.
  • the stranded wire connection portion 91 is an open barrel type, and therefore the stranded wire connection portion 91 cannot be expected to be waterproof. Then, in order to prevent generation
  • connection terminal for connecting a flexible flat cable and a round wire is provided as follows. That is, this connection terminal integrally includes a flexible flat cable connection portion and a round wire connection portion.
  • the flexible flat cable connecting portion is substantially flat.
  • the round wire connecting portion is formed in a cylindrical shape into which the conductor and insulating coating at the tip of the round wire can be inserted, and has one end in the axial direction of the cylinder closed.
  • round wire refers to an electric wire having a substantially circular cross-sectional contour of a conductor portion, and includes so-called single wires and twisted wires.
  • the conductor of the flexible flat cable can be welded to the flexible flat cable connecting portion.
  • an unreasonable force is not applied to the flexible flat cable as compared with the conventional connection terminal in which a hole is opened by piercing. Therefore, the reliability of the flexible flat cable connecting portion can be improved.
  • the round wire connection portion has a cylindrical shape with one end side closed, a highly waterproof connection structure can be realized.
  • connection terminal for connecting a flexible flat cable and a round wire is provided as follows. That is, this connection terminal integrally includes a flexible flat cable connection portion and a round wire connection portion.
  • the flexible flat cable connecting portion is substantially flat.
  • the said round wire connection part is an open barrel type.
  • the conductor of the flexible flat cable can be welded to the flexible flat cable connecting portion.
  • an unreasonable force is not applied to the flexible flat cable as compared with the conventional connection terminal in which a hole is opened by piercing. Therefore, the reliability of the flexible flat cable connecting portion can be improved.
  • the round wire connection portion is an open barrel type, highly reliable electrical connection can be realized.
  • the dimension in the thickness direction of the flexible flat cable connection portion is smaller than the dimension in the radial direction of the conductor of the round wire inserted into the round wire connection portion.
  • the flexible flat cable connecting portion can be appropriately welded to the conductor of the flexible flat cable.
  • connection terminal for connecting a flexible flat cable and a round wire is provided as follows. That is, this connection terminal integrally includes a flexible flat cable connection portion and a round wire connection portion.
  • the flexible flat cable connecting portion includes a pierce capable of penetrating the flexible flat cable in a thickness direction.
  • the round wire connecting portion is formed in a cylindrical shape into which the conductor and insulating coating at the tip of the round wire can be inserted, and has one end in the axial direction of the cylinder closed.
  • the sealing performance of the round wire connecting portion can be enhanced. Thereby, it can prevent that a water
  • an intermediate portion between the flexible flat cable connection portion and the round wire connection portion may be formed in a substantially cylindrical shape.
  • connection terminal is improved by forming the intermediate portion in a substantially cylindrical shape.
  • connection terminals are preferably configured as follows. That is, an intermediate portion between the flexible flat cable connecting portion and the round wire connecting portion is formed in a substantially cylindrical shape.
  • the round wire connecting portion is formed in a cylindrical shape by bending a plate material and abutting both ends thereof, or overlapping both ends and welding the both ends linearly. .
  • the intermediate portion is also formed into a cylindrical shape by bending the plate material so that both ends thereof are abutted with each other or the both ends are overlapped and the both ends are welded linearly. And when it sees from a predetermined
  • the round wire connecting portion when forming the round wire connecting portion, it can be formed into a seamless cylindrical shape by welding both ends of the bent plate material. Thereby, the waterproofness of a round wire connection part further improves. Also, when the intermediate portion is formed, the strength of the intermediate portion can be improved by welding to form a cylindrical shape. Then, by arranging the welded portions of the round wire connecting portion and the intermediate portion on substantially the same straight line as described above, both the round wire connecting portion and the intermediate portion can be welded by a single welding operation. Thereby, welding work can be simplified.
  • the electric wire assembly includes the connection terminal (the flexible flat cable connection portion is a substantially flat plate shape, and the round wire connection portion is a connection terminal having a cylindrical shape with one end closed) and the flexible connection terminal.
  • the conductor of the flexible flat cable is welded to the flexible flat cable connecting portion.
  • the tip of the round wire is inserted into the round wire connecting portion with a portion of the insulating coating removed to expose the conductor, and the round wire connecting portion is crimped to the conductor and the insulating coating.
  • the flexible flat cable connecting portion is more flexible than the conventional connecting terminal in which a hole is pierced in the flexible flat cable. Reliability can be improved.
  • the round wire connection portion can be sealed by crimping the cylindrical round wire connection portion with one end closed to the round wire, moisture can be prevented from entering the inside of the round wire connection portion. it can.
  • the electric wire assembly includes the connection terminal (a connection terminal in which the flexible flat cable connection portion is substantially flat and the round wire connection portion is an open barrel type), and the flexible flat cable connection portion of the connection terminal. And a round wire connected to the round wire connection portion of the connection terminal.
  • the conductor of the flexible flat cable is welded to the flexible flat cable connecting portion.
  • the conductor and the insulating coating are pressure-bonded to the round wire connecting portion in a state where a part of the insulating coating is removed and the conductor is exposed.
  • the flexible flat cable connecting portion is more flexible than the conventional connecting terminal in which a hole is pierced in the flexible flat cable. Reliability can be improved. In addition, a highly reliable electrical connection can be realized by crimping the open barrel type round wire connecting portion to the round wire.
  • the electric wire assembly includes the connection terminal (the flexible flat cable connection portion is provided with a pierce, and the round wire connection portion is a cylindrical connection terminal having one end closed), and the flexible flat cable of the connection terminal.
  • the conductor of the flexible flat cable is penetrated by the piercing of the flexible flat cable connecting portion.
  • the conductor and the insulating coating are pressure-bonded to the round wire connecting portion in a state where a part of the insulating coating is removed and the conductor is exposed.
  • the round wire connecting portion can be sealed by crimping the round wire connecting portion to the round wire, it is possible to prevent moisture from entering the inside of the round wire connecting portion.
  • the conductor of the flexible flat cable is made of copper or a copper-based alloy
  • the conductor of the round wire is made of aluminum or an aluminum-based alloy
  • the connection terminal is made of copper or a copper-based alloy. be able to.
  • connection terminal When the round wire connection part of the connection terminal is made into a cylindrical shape with one end closed, it is excellent in waterproofness, so that the occurrence of electrolytic corrosion can be prevented even when the round wire conductor is aluminum. Further, by using the same type of metal for the connection terminal and the conductor of the flexible flat cable, good welding can be realized even when both are welded.
  • Side surface sectional drawing which shows the other example of the method of welding a flat conductor and a flexible flat cable connection part.
  • the perspective view of an intermediate body The perspective view which shows the connecting terminal before performing welding.
  • the perspective view which shows the modification which made the twisted wire connection part the open barrel type.
  • FIG. 1 is an enlarged perspective view showing a part of the wire assembly 1 according to the first embodiment of the present invention.
  • the electric wire assembly 1 of this embodiment includes a flexible flat cable 2, a plurality of stranded wires (round wires) 3, and connection terminals 12.
  • the stranded wire 3 has a well-known configuration including a conductor 5 and an insulating coating 6.
  • the conductor 5 is a bundle of a plurality of aluminum strands.
  • the conductor 5 may be made of a material other than aluminum (for example, copper) as long as it is a conductor.
  • the insulating coating 6 is made of an insulating material such as a resin and is disposed so as to cover the periphery of the conductor 5.
  • the flexible flat cable 2 has a known configuration including a flat conductor 7 and an insulator 8.
  • the flat conductor 7 is a strip-shaped metal plate or metal foil, and is formed in a flat shape with a rectangular cross section.
  • the flat conductor 7 is made of copper.
  • the flat conductor 7 may be made of a material other than copper (for example, aluminum) as long as it is a conductor.
  • a plurality of flat conductors 7 are arranged in the width direction. Note that the flexible flat cable 2 of the present embodiment includes four conductors.
  • the insulator 8 is an insulating resin film.
  • the insulator 8 is disposed so as to sandwich a plurality (four in the case of this embodiment) of flat conductors 7 included in the flexible flat cable 2 from both sides in the thickness direction.
  • connection terminal 12 connects the flat conductor 7 of the flexible flat cable 2 and the conductor 5 of the stranded wire 3. Note that one connection terminal 12 is connected to each flat conductor 7 of the flexible flat cable 2, and one stranded wire 3 is connected to each connection terminal 12. For example, in the case of the present embodiment, four connection terminals 12 are connected to one flexible flat cable 2. Therefore, in this embodiment, four stranded wires 3 are connected to one flexible flat cable 2 (see FIG. 1).
  • connection terminal 12 of this embodiment will be described in detail.
  • connection terminal 12 of this embodiment is made of a copper alloy such as brass whose surface is plated with tin (Sn).
  • connection terminal 12 may be comprised from raw materials (for example, aluminum) other than copper, if it is a conductor.
  • connection terminal 12 in a state before the flexible flat cable 2 and the stranded wire 3 are connected.
  • the connection terminal 12 of this embodiment integrally forms the flexible flat cable connection part 20 and the twisted wire connection part (round wire connection part) 21.
  • FIG. 2 and 3 show the connection terminal 12 in a state before the flexible flat cable 2 and the stranded wire 3 are connected.
  • the connection terminal 12 of this embodiment integrally forms the flexible flat cable connection part 20 and the twisted wire connection part (round wire connection part) 21.
  • round wire connection part round wire connection part
  • the flexible flat cable connecting portion 20 is connected to the end portion of the flexible flat cable 2.
  • the end of the stranded wire 3 is connected to the stranded wire connecting portion 21.
  • the direction in which the flexible flat cable connection portion 20 and the stranded wire connection portion 21 are arranged is referred to as the “longitudinal direction” of the connection terminal 12.
  • the flexible flat cable connecting portion 20 of the connection terminal 12 is elongated along the longitudinal direction and is formed in a flat plate shape.
  • the stranded wire connecting portion 21 is cylindrical (hollow).
  • the axial direction of the cylindrical twisted wire connecting portion 21 coincides with the longitudinal direction of the connection terminal 12.
  • An end portion on one side in the axial direction of the stranded wire connecting portion 21 is closed for waterproofing (closed portion 24).
  • the end of the stranded wire connection portion 21 opposite to the closing portion 24 is opened so that the tip of the stranded wire 3 can be inserted (open portion 25).
  • the twisted wire connection part 21 of this embodiment is formed in the cylinder shape by which the one end side was closed.
  • the operator removes the insulator 8 at the end of the flexible flat cable connecting portion 20 and exposes the tip of the flat conductor 7 (the state shown in FIGS. 2 and 3).
  • the method of removing the insulator 8 is not particularly limited, the insulator 8 is physically peeled off after an appropriate cut is made in the insulator 8 with, for example, a blade. Further, for example, the insulator 8 may be removed by sublimating the resin of the insulator 8 with a laser.
  • the insulator 8 when removing the insulator 8 as described above, it is preferable to remove the insulator 8 only on one surface side of the flexible flat cable 2 and leave the insulator 8 on the other surface side (see FIG. 2 and FIG. 2). (See FIG. 3).
  • the exposed flat conductor 7 can be supported from the one side by the left insulator 8, thus preventing the flat conductor 7 from being damaged. it can.
  • the operator arranges the exposed flat conductor 7 and the flexible flat cable connecting portion 20 so as to face each other (FIG. 3), and superimposes both in the thickness direction.
  • the flat conductor 7 and the flexible flat cable connecting portion 20 are welded (FIG. 4). Thereby, the electrical connection between the flat conductor 7 and the connection terminal 12 is ensured, and the flat conductor 7 is mechanically fixed to the connection terminal 12.
  • the method of welding the flat conductor 7 and the flexible flat cable connection part 20 is arbitrary, for example, fiber laser welding can be used.
  • the laser light irradiation portion 80 of the fiber laser welder is provided on the flexible flat cable connecting portion 20 side. Place. And the said flexible flat cable connection part 20 and the flat conductor 7 are welded by irradiating a laser beam with respect to the flexible flat cable connection part 20 from the said laser beam irradiation part 80.
  • the flexible flat cable connection portion 20 since welding is performed from the flexible flat cable connection portion 20 side, the flexible flat cable connection portion 20 is too thick, or the surface of the flexible flat cable connection portion 20 is uneven. If it exists, the said flexible flat cable connection part 20 and the flat conductor 7 cannot be welded appropriately by fiber laser welding.
  • the flexible flat cable connecting portion 20 of the present embodiment is formed in a flat plate shape. That is, the flexible flat cable connecting portion is flat and has no unevenness, and has no extra thickness. Thereby, the flexible flat cable connection part 20 and the flat conductor 7 can be appropriately welded by fiber laser welding.
  • the inventor of the present application also tried a configuration in which the conductor 5 of the stranded wire 3 was directly welded to the flat conductor 7 in the process of trial and error leading to the present invention.
  • the conductor 5 of the stranded wire 3 is welded to the flat conductor 7 by fiber laser welding, it may not be welded well. It is considered that this is because the conductor 5 of the stranded wire 3 is too thick for fiber laser welding.
  • the flexible flat cable connection portion 20 is configured to be thinner than the conductor 5 of the stranded wire 3. More specifically, the dimension T1 (see FIG. 3) in the thickness direction of the flexible flat cable connecting portion 20 is set to the dimension D1 in the radial direction of the conductor 5 of the stranded wire 3 connected to the stranded wire connecting portion 21 (see FIG. 3). ) Smaller than. Accordingly, even when it is difficult to directly weld the conductor 5 of the stranded wire 3 to the flat conductor 7, the connection terminal 12 of the present embodiment is used to appropriately weld the flat conductor 7. Can be done.
  • connection method is an example, and other methods can be used.
  • the insulator 8 on both sides as well as one side of the flexible flat cable 2 is removed, and then the laser light irradiation unit 80 of the fiber laser welder is arranged on the flexible flat cable 2 side and welded. May be.
  • the operator removes the insulating coating 6 at a predetermined length at the tip of the stranded wire 3 so that the conductor 5 is exposed (the state shown in FIGS. 2 and 3).
  • the tip of the stranded wire 3 in this state is inserted into the stranded wire connecting portion 21 from the open portion 25 of the stranded wire connecting portion 21.
  • not only the portion where the conductor 5 is exposed but also the portion where the conductor 5 is not exposed (portion where the insulating coating 6 is not removed) is inserted into the stranded wire connection portion 21.
  • the operator operates the crimping tool composed of the first crimping die 71 and the second crimping die 72 to crimp the stranded wire connection portion 21 (see FIG. 6A). ).
  • the stranded wire connecting portion 21 is crimped to the conductor 5 (FIG. 6B). Thereby, the electrical connection of the conductor 5 of the twisted wire 3 and the twisted wire connection part 21 is ensured.
  • the stranded wire connecting portion 21 is also crimped to the insulating coating 6 of the stranded wire 3.
  • the open part 25 of the stranded wire connection part 21 is sealed. Thereby, it is possible to prevent water from entering the stranded wire connecting portion 21 from the open portion 25.
  • the conductor 5 of the stranded wire 3 is made of aluminum, and the connection terminal 12 is made of brass.
  • the stranded wire connection portion 21 is required to have high waterproof performance in order not to cause electrolytic corrosion.
  • the end of the stranded wire 3 is inserted into the stranded wire connecting portion 21 formed in a cylindrical shape with one end closed, and the stranded wire connecting portion 21 is connected to the stranded wire 3.
  • the stranded wire connection portion 21 is hermetically sealed by pressure bonding to the insulating coating 6.
  • the method for connecting the flexible flat cable 2 to the flexible flat cable connecting portion 20 is described, and then the method for connecting the stranded wire 3 to the stranded wire connecting portion 21 is described.
  • the order in which the flexible flat cable 2 and the stranded wire 3 are connected to 12 is not particularly limited.
  • connection terminal 12 of this embodiment a method for manufacturing the connection terminal 12 of this embodiment will be described.
  • connection terminal 12 of the present embodiment is formed by punching a single plate material to form the intermediate body 30 as shown in FIG. 7, and then bending the intermediate body 30 as appropriate.
  • a portion corresponding to the flexible flat cable connecting portion 20 is elongated along the longitudinal direction and is formed in a flat plate shape.
  • a portion corresponding to the stranded wire connection portion 21 is configured as a first protrusion 31 that partially protrudes in the width direction.
  • the “width direction” refers to a direction orthogonal to the longitudinal direction of the connection terminal 12 in the plane formed by the plate-like intermediate body 30.
  • the first projecting portion 31 is formed so as to project in a rectangular shape.
  • the first protruding portion 31 When forming the stranded wire connection portion 21 from the intermediate body 30 in FIG. 7, the first protruding portion 31 is bent, and both end surfaces in the protruding direction of the first protruding portion 31 are butted together, thereby twisting the stranded wire.
  • the connecting portion 21 is formed in a substantially cylindrical shape (state shown in FIG. 8).
  • This gap portion can be said to be a “seam” on the peripheral surface of the stranded wire connection portion 21.
  • the welded portion 33 is formed by welding the end surfaces of the first projecting portions 31 (by welding the “seam” portion) (FIG. 2).
  • the method of welding the welded portion 33 is arbitrary, but for example, welding can be performed with a fiber laser.
  • the “seam” of the stranded wire connecting portion 21 is substantially linear in a state where both end faces of the first protruding portion 31 are butted together (FIG. 8). Thereby, since the welding part 33 can be formed linearly, it is easy to weld.
  • the end on one side in the axial direction (the end on the flexible flat cable connecting portion 20 side in the present embodiment) of the stranded wire connecting portion 21 configured in a substantially cylindrical shape as described above is compressed and crushed.
  • the closure part 24 is formed by welding to the said crushed location (FIG. 2).
  • the method of welding the closing part 24 is arbitrary, similarly to the welding part 33, welding can be performed with a fiber laser.
  • the substantially cylindrical stranded wire connecting portion 21 with one end closed is completed.
  • the stranded wire connecting portion 21 having excellent airtightness can be realized.
  • connection terminal 12 of the present embodiment integrally includes the flexible flat cable connection portion 20 and the stranded wire connection portion 21.
  • the flexible flat cable connecting portion 20 has a substantially flat plate shape.
  • the stranded wire connecting portion 21 is formed in a cylindrical shape into which the conductor 5 and the insulating coating 6 at the tip of the stranded wire 3 can be inserted, and the one end side in the axial direction of the cylinder is closed.
  • the flat conductor 7 of the flexible flat cable 2 can be welded to the flexible flat cable connecting portion 20 by forming the flexible flat cable connecting portion 20 in a plate shape.
  • an unreasonable force is not applied to the flexible flat cable 2 as compared with a conventional connection terminal in which a hole is opened by piercing. Therefore, the reliability of the flexible flat cable connecting portion 20 can be improved.
  • the twisted wire connection part 21 was made into the cylinder shape which closed the one end side, a highly waterproof connection structure is realizable.
  • the dimension T1 in the thickness direction of the flexible flat cable connection part 20 is the dimension D1 in the radial direction of the conductor 5 of the stranded wire 3 inserted into the stranded wire connection part 21. Smaller than.
  • the flexible flat cable connecting portion 20 can be appropriately welded to the flat conductor 7 of the flexible flat cable 2 by making the flexible flat cable connecting portion 20 relatively thin.
  • the wire assembly 1 of the present embodiment includes the connection terminal 12, the flexible flat cable 2 connected to the flexible flat cable connection portion 20 of the connection terminal 12, and the stranded wire connection portion 21 of the connection terminal 12. And a stranded wire 3 connected to.
  • the flat conductor 7 of the flexible flat cable 2 is welded to the flexible flat cable connecting portion 20.
  • the tip of the stranded wire 3 is inserted into the stranded wire connecting portion 21 with the conductor 5 exposed by removing a part of the insulating coating 6, and the stranded wire connecting portion 21 is crimped to the conductor 5 and the insulating coating 6. ing.
  • the flexible flat cable is more flexible than a conventional connection terminal in which a hole is pierced in the flexible flat cable.
  • the reliability of the cable connection part 20 can be improved.
  • the said twisted wire connection part 21 can be sealed by crimping
  • the flat conductor 7 of the flexible flat cable is made of copper
  • the conductor 5 of the stranded wire 3 is made of aluminum
  • the connection terminal 12 is made of a copper-based alloy (brass).
  • connection terminal 12 of the present invention is excellent in the waterproof property of the stranded wire connecting portion 21, even when the stranded wire conductor 5 is aluminum, the occurrence of electrolytic corrosion can be prevented. Moreover, both can be favorably welded by making the connecting terminal 12 and the flat conductor 7 of the flexible flat cable 2 into the same kind of metal.
  • the intermediate portion 22 between the flexible flat cable connection portion 20 and the stranded wire connection portion 21 may be formed in a cylindrical shape (square tube shape).
  • the rigidity of the connection terminal 12 can be improved by forming the intermediate part 22 in a cylindrical shape.
  • a so-called open barrel type twisted wire connecting portion 41 may be provided instead of the cylindrical twisted wire connecting portion 21 whose one end is closed.
  • the stranded wire connection portion 41 includes a conductor crimping portion 42 and a covering crimping portion 43.
  • the conductor crimping portion 42 is crimped to the conductor 5 of the stranded wire 3 by crimping the conductor crimping portion 42.
  • the coated crimping portion 43 is crimped to the insulating coating 6 of the stranded wire 3 by crimping the coated crimped portion 43.
  • the cylindrical twisted wire connection part 21 in which the one end was closed has faced the edge parts of the 1st bent part 31 bent, it is not restricted to this but is the 1st protruding part 31.
  • These end portions may be overlapped in the thickness direction.
  • the welded portion 33 is formed by welding the overlapped portions.
  • the flexible flat cable connecting portion 20 and the stranded wire connecting portion 21 are integrally formed from a single plate material.
  • the present invention is not limited to this.
  • the flexible flat cable connection portion 20 and the stranded wire connection portion 21 are formed of separate members, and are connected later by welding or the like, whereby the flexible flat cable connection portion 20 and the stranded wire connection portion. 21 may be integrated.
  • the tip portion of the insulator 8 of the flexible flat cable 2 is entirely removed to expose the flat conductor 7, but the form of removing the insulator 8 is not limited to this, and the flat conductor 7 is It only needs to be exposed.
  • the insulator 8 may be removed in a U shape (or U shape) for each flat conductor 7.
  • the flat conductor 7 may be exposed by forming a window-like opening in the insulator 8.
  • the insulator 8 becomes an obstacle when the flat conductor 7 and the flexible flat cable connecting portion 20 are overlapped.
  • a gap corresponding to the thickness of the insulator 8 may occur between the flat conductor 7 and the flexible flat cable connecting portion 20. Therefore, in order to perform welding in such a case, some device is required such as applying a force in the thickness direction so as to bring the flat conductor 7 and the flexible flat cable connecting portion 20 into close contact with each other and increasing the output of the welding machine. is there.
  • the welding of the insulator 8 and the flexible flat cable connecting portion 20 can also be performed by resistance welding.
  • resistance welding When resistance welding is performed, the flat conductor 7 and the flexible flat cable connecting portion 20 are sandwiched between probes in the thickness direction, and welding is performed by passing an electric current in the thickness direction.
  • resistance welding it is necessary to flow an electric current in the thickness direction of the flat conductor 7 in principle. Therefore, when performing resistance welding, the insulator 8 on both surfaces of the flexible flat cable 2 is removed when the flat conductor 7 is exposed.
  • FIG. 12 is an enlarged perspective view showing a part of the wire assembly 1 according to the second embodiment of the present invention.
  • the same or similar members as those of the above-described embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.
  • the electric wire assembly 1 of this embodiment includes a plurality of flexible flat cables 2, a plurality of stranded wires (round wires) 3, and a connector portion 4.
  • the connector part 4 is comprised from the outer side case 51, the inner side case 52, and the connection terminal 12z.
  • connection terminal 12 z connects the flat conductor 7 of the flexible flat cable 2 and the conductor 5 of the stranded wire 3.
  • one connection terminal 12z is connected to each flat conductor 7 of the flexible flat cable 2
  • one stranded wire 3 is connected to each connection terminal 12z.
  • four connection terminals 12 z are connected to one flexible flat cable 2. Therefore, in this embodiment, four twisted wires 3 are connected to one flexible flat cable 2 (see FIG. 12).
  • the inner case 52 is configured to accommodate a plurality (four in this embodiment) of connection terminals 12z connected to one flexible flat cable 2. Specifically, as shown in FIG. 13, the inner case 52 has a plurality of accommodation spaces 53 (four in this embodiment) that can accommodate the connection terminals 12z. The inner case 52 is provided with positioning protrusions 54 for positioning each connection terminal 12z.
  • the inner case 52 is configured to be laminated in the thickness direction of the flexible flat cable 2 in a state where the connection terminal 12z is accommodated in the accommodation space 53 (state of FIG. 12).
  • the outer case 51 (detailed illustration is omitted) is configured to accommodate a plurality of stacked inner cases 52.
  • the flexible flat cable 2 and the stranded wire 3 are electrically connected by the connector part 4 having the above configuration.
  • connection terminal 12z of this embodiment will be described in detail.
  • connection terminal 12z of this embodiment is made of a copper alloy such as brass whose surface is plated with tin (Sn), as in the first embodiment.
  • the connection terminal 12z may be made of a material other than copper (for example, aluminum) as long as it is a conductor.
  • connection terminal 12z of this embodiment is formed by integrally forming a flexible flat cable connection portion 20x and a stranded wire connection portion (round wire connection portion) 21.
  • the direction in which the flexible flat cable connection portion 20x and the stranded wire connection portion 21 are arranged is referred to as the “longitudinal direction” of the connection terminal 12z.
  • the end portion of the flexible flat cable 2 is connected to the flexible flat cable connecting portion 20x.
  • the end of the stranded wire 3 is connected to the stranded wire connecting portion 21.
  • connection terminal 12z shows the connection terminal 12z in a state before the flexible flat cable 2 and the stranded wire 3 are connected.
  • the flexible flat cable connecting portion 20x of the connection terminal 12z has a plurality of piercings 23 protruding in a direction orthogonal to the longitudinal direction. A direction parallel to the direction in which the piercing 23 protrudes is referred to as a “projection direction”.
  • the intermediate portion 22 between the flexible flat cable connection portion 20x and the stranded wire connection portion 21 is formed in a rectangular tube shape.
  • the rigidity of the connection terminal 12z can be increased by configuring the intermediate portion 22 in a rectangular tube shape. It should be noted that the axial direction of the intermediate portion 22 coincides with the longitudinal direction of the connection terminal 12z.
  • the intermediate part 22 is formed so as to fit in the accommodation space 53 of the inner case 52. Further, a positioning hole 26 that engages with a positioning projection 54 formed in the inner case 52 is formed in the intermediate portion 22 (FIGS. 13 and 15). With this configuration, the connecting portion 12z can be attached in a state of being positioned with respect to the inner case 52 by fitting the intermediate portion 22 into the accommodation space 53 and inserting the positioning projection 54 into the positioning hole 26.
  • the operator penetrates the flexible flat cable 2 from the thickness direction with respect to the pierce 23 of the flexible flat cable connecting portion 20x.
  • the pierce 23 penetrates the flat conductor 7 and the insulator 8 of the flexible flat cable 2.
  • the electrical connection of the flat conductor 7 of the flexible flat cable 2 and the flexible flat cable connection part 20x is ensured.
  • the flat conductor 7 is penetrated by the piercing 23 together with the insulator 8 as described above, it is not necessary to remove the insulator 8 and expose the flat conductor 7.
  • connection terminal 12z of the present embodiment a method for manufacturing the connection terminal 12z of the present embodiment will be described.
  • connection terminal 12z of the present embodiment is formed by punching a single plate material to form the intermediate body 30 as shown in FIG. 17, and then bending the intermediate body 30 as appropriate.
  • a portion corresponding to the flexible flat cable connection portion 20 x has a plurality of piercings 23.
  • the pierce 23 is formed so that the tip thereof protrudes in the width direction.
  • the “width direction” refers to a direction orthogonal to the longitudinal direction of the connection terminal 12 z in the plane formed by the plate-like intermediate body 30.
  • a portion corresponding to the stranded wire connection portion 21 is configured as a first protruding portion 31 that partially protrudes in the width direction.
  • the method of forming the stranded wire connection portion 21 from the first protrusion 31 is the same as the method described in the first embodiment (FIGS. 2, 7, 8, etc.), but will be briefly described below.
  • the first projecting portion 31 shown in FIG. 17 is bent into a cylindrical shape, but both end surfaces in the projecting direction of the first projecting portion 31 are butted together, and a space between the butted end surfaces (seam) is welded. .
  • the linear 1st welding part 33 as shown in FIG. 14 is formed.
  • the end of one side in the axial direction (in this embodiment, the end on the side of the flexible flat cable connection 20x) of the twisted wire connection portion 21 configured in a substantially cylindrical shape is compressed and crushed.
  • the closure part 24 shown in FIG. 14 is formed by welding to a location. As described above, the substantially cylindrical stranded wire connecting portion 21 whose one end is closed is completed.
  • the portion corresponding to the intermediate portion 22 is configured as a second protruding portion 32 that partially protrudes in the width direction.
  • the second projecting portion 32 is formed so as to project in a rectangular shape.
  • the second protrusion 32 is bent, and both end surfaces in the protrusion direction of the second protrusion 32 are abutted to each other, thereby forming the intermediate portion 22. It is configured in a substantially rectangular tube shape (state shown in FIG. 18).
  • the 2nd welding part 34 is formed by welding the end surfaces of the said 2nd protrusion part 32 (by welding the "seam” part) (FIG. 14).
  • the method of welding the second welded portion 34 is arbitrary, but welding can be performed with a fiber laser in the same manner as the first welded portion 33.
  • the “seam” of the intermediate portion 22 is substantially linear in a state where both end surfaces of the second projecting portion 32 are abutted with each other (FIG. 18). Thereby, since the 2nd welding part 34 can be formed in linear form, it is easy to weld.
  • the gap between the joints of the rectangular tube-shaped intermediate portion 22 can be closed, so that the rectangular tube-shaped structure can be made stronger. Thereby, since the rigidity of the said intermediate part 22 can be improved, the intensity
  • connection terminal 12z (FIG. 14) of the present embodiment can be formed from the intermediate body 30 of FIG.
  • piercing 23 is arbitrary, and is not specifically limited. They can also be bent simultaneously by a press bending die or the like.
  • the order in which the first welded portion 33, the closed portion 24, and the second welded portion 34 are welded is arbitrary and is not particularly limited. However, if the welding order is devised, the efficiency of the welding operation can be improved. For example, in this embodiment, when forming the 1st welding part 33, the 2nd welding part 34 is also formed.
  • the “seam” on the peripheral surface of the stranded wire connection portion 21 and the intermediate portion is configured to exist on a straight line. In this way, by configuring the two “seams” to be welded to be on the same straight line, even in the case of fiber laser welding, the two “seams” can be formed without performing readjustment of the focus. Can be welded.
  • the first welded portion 33 when the first welded portion 33 is formed in a state where the first projecting portion 31 and the second projecting portion 32 of the intermediate body 30 are bent (the state shown in FIG. 18), Welding is performed in a straight line to the tip in the longitudinal direction, and at this time, the second welded portion 34 is also formed. According to this, since the 1st welding part 33 and the 2nd welding part 34 can be formed by one-time welding, welding can be performed efficiently.
  • connection terminal 12z (FIG. 14) of this embodiment is manufactured as described above, when viewed from a predetermined direction (specifically, when viewed from the protruding direction of the pierce 23), The first welded portion 33 and the second welded portion 34 are configured to exist on the same straight line.
  • connection terminal 12z of the present embodiment integrally includes the flexible flat cable connection portion 20x and the stranded wire connection portion 21.
  • the flexible flat cable connecting portion 20x includes a pierce 23 that can penetrate the flexible flat cable 2 in the thickness direction.
  • the stranded wire connecting portion 21 is formed in a cylindrical shape into which the conductor 5 and the insulating coating 6 at the tip of the stranded wire 3 can be inserted, and the one end side in the axial direction of the cylinder is closed.
  • the hermeticity of the stranded wire connection portion 21 can be improved. Thereby, it is possible to prevent moisture from entering the stranded wire connection portion 21. Therefore, even in the case of this embodiment in which the conductor 5 of the stranded wire 3 is aluminum, the occurrence of electrolytic corrosion can be prevented.
  • the intermediate portion 22 between the flexible flat cable connection portion 20x and the stranded wire connection portion 21 is formed in a substantially cylindrical shape.
  • connection terminal 12z is improved by forming the intermediate portion 22 in a substantially cylindrical shape.
  • connection terminal 12z of the present embodiment is configured as follows. That is, the stranded wire connecting portion 21 is formed in a cylindrical shape by bending the first projecting portion 31, butting both ends thereof and welding the both ends linearly. Similarly, the intermediate portion 22 is formed in a cylindrical shape by bending the second projecting portion 32, butting both ends thereof and welding the both ends. And when it sees from a predetermined
  • both ends of the bent first projecting portion 31 can be welded to each other so as to form a seamless cylindrical shape.
  • the waterproofness of the twisted wire connection part 21 further improves.
  • the strength of the intermediate portion 22 can be improved by welding and forming a cylindrical shape.
  • both the twisted wire connection part 21 and the intermediate part 22 can be welded by one welding operation. Thereby, welding work can be simplified.
  • the wire assembly 1 of the present embodiment includes the connection terminal 12z, the flexible flat cable 2 connected to the flexible flat cable connection portion 20x of the connection terminal 12z, and the stranded wire connection portion of the connection terminal 12z. And a twisted wire 3 connected to 21.
  • the tip of the stranded wire 3 is inserted into the stranded wire connecting portion 21 with a part of the insulating coating 6 removed to expose the conductor 5, and the stranded wire connecting portion 21 is crimped to the conductor 5 and the insulating coating 6. ing.
  • the stranded wire connecting portion 21 can be sealed by crimping the stranded wire connecting portion 21 to the stranded wire 3 in this way, it is possible to prevent moisture from entering the stranded wire connecting portion 21.
  • the flat conductor 7 of the flexible flat cable is copper
  • the conductor 5 of the stranded wire 3 is aluminum
  • the connection terminal 12z is a copper-based alloy (brass).
  • connection terminal 12z of this embodiment is excellent in the waterproof property of the stranded wire connection part 21, even when the conductor 5 of the stranded wire 3 is aluminum, the occurrence of electrolytic corrosion can be prevented.
  • the flat conductor 7 and the connection terminal 12z are the same type of metal, and there is no concern that electric corrosion will occur between the two. Therefore, the waterproof property is not required for the flexible flat cable connection portion 20x in this respect.
  • the “weld” of the intermediate portion 22 is welded to form the second welded portion 34, but the present invention is not necessarily limited thereto. Since the intermediate part 22 is not particularly required to be waterproof, even if a gap exists at the joint of the intermediate part 22, there is no problem in terms of waterproofness. Therefore, the second weld 34 may not be formed (the seam of the intermediate part 22 may not be welded).
  • the configuration in which the intermediate portion 22 is formed in a cylindrical shape may be omitted.
  • the twisted wire connection part 21 face
  • the first welded portion 33 is formed by welding the overlapped portions.
  • the intermediate part 22 face
  • the overlapped portion is welded to form the second welded portion 34.
  • outer case 51 and the inner case 52 can be changed as appropriate.
  • the outer case 51 and the inner case 52 are not essential components for carrying out the present invention, and can be omitted.
  • the flexible flat cable connecting portion 20x and the stranded wire connecting portion 21 are integrally formed from a single plate material.
  • the present invention is not limited to this.
  • the flexible flat cable connection portion 20x and the stranded wire connection portion 21 are formed of separate members and connected later by welding or the like, whereby the flexible flat cable connection portion 20x and the stranded wire connection portion. 21 may be integrated.
  • connection terminals 12, 12x, 12y, and 12z shown in the above two embodiments and modifications are examples, and the shapes can be changed as appropriate.
  • Electric wire assembly Flexible flat cable 3 Twisted wire (round wire) 12, 12x, 12y, 12z Connection terminal 20, 20x Flexible flat cable connection part 21 Twisted wire connection part (round wire connection part) 22 Middle part 23 Pierce 41 Twisted wire connection part (Round wire connection part)

Abstract

　A connecting terminal (12) is provided with a flexible flat cable connecting portion (20) and a twisted wire connecting portion (21) formed integrally together. The flexible flat cable connecting portion (20) has a substantially flat plate shape. The twisted wire connecting portion (21) is formed in a cylindrical shape into which a conductor (5) and an insulating covering (6) at the tip of the twisted wire (3) can be inserted, one end of the cylinder in the axis direction being closed off.

Description

接続端子及び電線アッセンブリConnection terminal and wire assembly
　本発明は、主として、フレキシブルフラットケーブルと丸線とを接続する接続端子の構成に関する。 The present invention mainly relates to a configuration of a connection terminal for connecting a flexible flat cable and a round wire.
　近年、例えば自動車の電気配線において、スライドドア等へ給電するための配線に、フレキシブルフラットケーブルが採用される機会が増えてきている。 In recent years, for example, in the electrical wiring of automobiles, an opportunity for adopting a flexible flat cable for wiring for supplying power to a sliding door or the like is increasing.
　しかしながら、フレキブルフラットケーブルが採用されるのは一部のみであり、他の部分の配線にはワイヤハーネス（複数の撚線を束ねたもの）が利用されている。即ち、現状では、フレキシブルフラットケーブルと撚線（丸線）が混在して配線されている。このため、フレキシブルフラットケーブルと、撚線と、を接続する構造が必要となる。 However, only a part of the flexible flat cable is adopted, and a wiring harness (a bundle of a plurality of stranded wires) is used for wiring of other parts. That is, at present, flexible flat cables and stranded wires (round wires) are mixed and wired. For this reason, the structure which connects a flexible flat cable and a twisted wire is needed.
　この点、非特許文献１は、フレキシブルフラットケーブルと撚線を接続する接続端子（非特許文献１では「ＷＦ端子」と称している）を開示している。この従来の接続端子を、図１９に示す。図１９に示す従来の接続端子９０は、フレキシブルフラットケーブル接続部９５と、撚線接続部９１と、を一体的に形成したものである。 In this regard, Non-Patent Document 1 discloses a connection terminal (referred to as “WF terminal” in Non-Patent Document 1) for connecting a flexible flat cable and a stranded wire. This conventional connection terminal is shown in FIG. A conventional connection terminal 90 shown in FIG. 19 is formed by integrally forming a flexible flat cable connection portion 95 and a stranded wire connection portion 91.
　フレキシブルフラットケーブル接続部９５は、一方向に向けて突出する複数のピアス９４を有している。このピアス９４を、フレキシブルフラットケーブルに厚み方向から貫通させることで、当該フレキシブルフラットケーブルの導体と接続端子９０とを電気的に接続する。 The flexible flat cable connecting portion 95 has a plurality of piercings 94 protruding in one direction. By passing this pierce 94 through the flexible flat cable from the thickness direction, the conductor of the flexible flat cable and the connection terminal 90 are electrically connected.
　撚線接続部９１は、いわゆるオープンバレル式の圧着端子として構成されており、導体圧着部９２と、被覆圧着部９３と、を有している。導体圧着部９２をカシメることにより、当該導体圧着部９２を、撚線の導体に圧着させる。また、被覆圧着部９３をカシメることにより、当該被覆圧着部９３を、撚線の絶縁被覆に圧着させる。これにより、撚線の導体と接続端子９０との電気的接続を確保するとともに、当該撚線に対して接続端子９０を固定できる。 The stranded wire connection portion 91 is configured as a so-called open barrel type crimp terminal, and includes a conductor crimp portion 92 and a covering crimp portion 93. By crimping the conductor crimping portion 92, the conductor crimping portion 92 is crimped to the stranded conductor. Moreover, the crimping | compression-bonding part 93 is crimped | bonded by crimping the said crimping | compression-bonding part 93 to the insulation coating of a stranded wire. Thereby, while ensuring the electrical connection of the conductor of a twisted wire, and the connection terminal 90, the connection terminal 90 can be fixed with respect to the said twisted wire.
　なお、上記のような接続端子９０においては、ピアス９４、導体圧着部９２、及び被覆圧着部９３の強度及び電気接続の信頼性が要求される。そこで、接続端子９０の素材としては、従来から各種端子への採用実績がある黄銅等を用いる。 In the connection terminal 90 as described above, the strength of the pierce 94, the conductor crimping portion 92, and the covering crimping portion 93 and the reliability of electrical connection are required. Therefore, as the material of the connection terminal 90, brass or the like that has been used for various terminals has been used.
　以上のような接続端子９０により、フレキシブルフラットケーブルの導体と、撚線の導体と、を接続できる。 With the connection terminal 90 as described above, the conductor of the flexible flat cable and the conductor of the stranded wire can be connected.
　図１９に示した従来の接続端子９０では、ピアス９４によって、フレキシブルフラットケーブルの導体及び被覆に孔を開けることになる。このため、例えばフレキシブルフラットケーブルに対して引っ張る方向の力が加わった場合、上記孔の部分に力が掛かり、当該孔が拡がったり、導体が千切れたりする原因になる可能性がある。 In the conventional connection terminal 90 shown in FIG. 19, a hole is made in the conductor and covering of the flexible flat cable by the piercing 94. For this reason, for example, when a pulling force is applied to the flexible flat cable, a force is applied to the hole portion, which may cause the hole to expand or the conductor to break.
　このため、図１９に示した従来の接続端子９０は、フレキシブルフラットケーブル接続部９５の信頼性を向上させるという点で、改良の余地がある。 For this reason, the conventional connection terminal 90 shown in FIG. 19 has room for improvement in terms of improving the reliability of the flexible flat cable connection portion 95.
　また、これとは別の問題であるが、近年では軽量化の観点から、撚線の導体にアルミニウムを用いたアルミ電線が利用されることが多くなってきている。一方で、上記のような接続端子９０においては、ピアス２３、導体圧着部９２、及び被覆圧着部９３の強度及び電気接続の信頼性が要求されるため、従来から各種端子への採用実績がある黄銅等を用いることが多い。しかしながら、アルミ電線を上記接続端子９０（黄銅製）に接続した場合、異種金属接触が生じるので、周囲に水分が存在していると電食が発生するという問題がある。このため、撚線接続部９１には防水性が求められる。 Moreover, although this is another problem, in recent years, aluminum wires using aluminum as a stranded conductor have been increasingly used from the viewpoint of weight reduction. On the other hand, in the connection terminal 90 as described above, the strength of the pierce 23, the conductor crimping portion 92, and the covering crimping portion 93 and the reliability of electrical connection are required, and thus there has been a track record of adoption in various terminals. Brass is often used. However, when an aluminum electric wire is connected to the connection terminal 90 (made of brass), dissimilar metal contact occurs, so that there is a problem that electrolytic corrosion occurs when moisture is present in the surroundings. For this reason, the stranded wire connecting portion 91 is required to be waterproof.
　しかしながら、図１９に示した従来の接続端子９０では、撚線接続部９１がオープンバレル式であるため、当該撚線接続部９１には防水性を期待できない。そこで、電食の発生を防止するため、撚線接続部９１の周囲に止水剤を充填することも考えられるが、製造工程が複雑になるうえ、製造コストも上昇してしまう。 However, in the conventional connection terminal 90 shown in FIG. 19, the stranded wire connection portion 91 is an open barrel type, and therefore the stranded wire connection portion 91 cannot be expected to be waterproof. Then, in order to prevent generation | occurrence | production of an electric corrosion, although it can also be considered to fill the periphery of the twisted wire connection part 91 with a water stop agent, a manufacturing process will be complicated and manufacturing cost will also rise.
　本発明は以上の事情に鑑みてされたものであり、その目的は、フレキシブルフラットケーブルと丸線を接続する接続端子であって、フレキシブルフラットケーブル接続部の信頼性を向上させるとともに、撚線接続部の防水を簡単な構成で実現した接続端子を提供することにある。また、本発明の別の目的は、フレキシブルフラットケーブルと丸線とを確実に接続し、かつ簡単な構成で電食の発生を防止した接続端子を提供することにある。 The present invention has been made in view of the above circumstances, and the purpose thereof is a connection terminal for connecting a flexible flat cable and a round wire, and improves the reliability of the flexible flat cable connection portion, and also provides a twisted wire connection. It is to provide a connection terminal that realizes waterproofing of a part with a simple configuration. Another object of the present invention is to provide a connection terminal that securely connects a flexible flat cable and a round wire and prevents the occurrence of electrolytic corrosion with a simple configuration.
課題を解決するための手段及び効果Means and effects for solving the problems
　本発明の解決しようとする課題は以上の如くであり、次にこの課題を解決するための手段とその効果を説明する。 The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.
　本願発明の観点によれば、フレキシブルフラットケーブルと丸線を接続する接続端子が以下のとおり提供される。即ち、この接続端子は、フレキシブルフラットケーブル接続部と、丸線接続部と、を一体的に備える。前記フレキシブルフラットケーブル接続部は、略平板状である。前記丸線接続部は、前記丸線の先端の導体及び絶縁被覆を挿入可能な筒状に形成され、かつ当該筒の軸方向一端側が閉じた形状である。 According to the aspect of the present invention, a connection terminal for connecting a flexible flat cable and a round wire is provided as follows. That is, this connection terminal integrally includes a flexible flat cable connection portion and a round wire connection portion. The flexible flat cable connecting portion is substantially flat. The round wire connecting portion is formed in a cylindrical shape into which the conductor and insulating coating at the tip of the round wire can be inserted, and has one end in the axial direction of the cylinder closed.
　なお、本願明細書において、「丸線」とは、導体部分の断面輪郭が略円形となっている電線を指し、いわゆる単線と撚線を含む。 In the present specification, “round wire” refers to an electric wire having a substantially circular cross-sectional contour of a conductor portion, and includes so-called single wires and twisted wires.
　上記のように、フレキシブルフラットケーブル接続部を板状に形成することで、当該フレキシブルフラットケーブル接続部に対して、フレキシブルフラットケーブルの導体を溶接できる。これにより、ピアスによって孔を開ける従来の接続端子にくらべて、フレキシブルフラットケーブルに無理な力がかからない。従って、フレキシブルフラットケーブル接続部の信頼性を向上させることができる。また、丸線接続部を、一端側を閉じた筒状としたので、当防水性の高い接続構造を実現できる。 As described above, by forming the flexible flat cable connecting portion in a plate shape, the conductor of the flexible flat cable can be welded to the flexible flat cable connecting portion. Thereby, an unreasonable force is not applied to the flexible flat cable as compared with the conventional connection terminal in which a hole is opened by piercing. Therefore, the reliability of the flexible flat cable connecting portion can be improved. In addition, since the round wire connection portion has a cylindrical shape with one end side closed, a highly waterproof connection structure can be realized.
　本発明の第２の観点によれば、フレキシブルフラットケーブルと丸線を接続する接続端子が以下のとおり提供される。即ち、この接続端子は、フレキシブルフラットケーブル接続部と、丸線接続部と、を一体的に備える。前記フレキシブルフラットケーブル接続部は、略平板状である。前記丸線接続部は、オープンバレル式である。 According to the second aspect of the present invention, a connection terminal for connecting a flexible flat cable and a round wire is provided as follows. That is, this connection terminal integrally includes a flexible flat cable connection portion and a round wire connection portion. The flexible flat cable connecting portion is substantially flat. The said round wire connection part is an open barrel type.
　上記のように、フレキシブルフラットケーブル接続部を板状に形成することで、当該フレキシブルフラットケーブル接続部に対して、フレキシブルフラットケーブルの導体を溶接できる。これにより、ピアスによって孔を開ける従来の接続端子にくらべて、フレキシブルフラットケーブルに無理な力がかからない。従って、フレキシブルフラットケーブル接続部の信頼性を向上させることができる。また、丸線接続部はオープンバレル式となっているので、信頼性の高い電気的接続を実現できる。 As described above, by forming the flexible flat cable connecting portion in a plate shape, the conductor of the flexible flat cable can be welded to the flexible flat cable connecting portion. Thereby, an unreasonable force is not applied to the flexible flat cable as compared with the conventional connection terminal in which a hole is opened by piercing. Therefore, the reliability of the flexible flat cable connecting portion can be improved. In addition, since the round wire connection portion is an open barrel type, highly reliable electrical connection can be realized.
　上記の接続端子において、前記フレキシブルフラットケーブル接続部の厚み方向の寸法は、前記丸線接続部に挿入される前記丸線の導体の径方向の寸法よりも小さいことが好ましい。 In the above connection terminal, it is preferable that the dimension in the thickness direction of the flexible flat cable connection portion is smaller than the dimension in the radial direction of the conductor of the round wire inserted into the round wire connection portion.
　このように、フレキシブルフラットケーブル接続部を比較的薄い形状とすることで、当該フレキシブルフラットケーブル接続部を、フレキシブルフラットケーブルの導体に対して適切に溶接できる。 Thus, by making the flexible flat cable connecting portion relatively thin, the flexible flat cable connecting portion can be appropriately welded to the conductor of the flexible flat cable.
　本発明の第３の観点によれば、フレキシブルフラットケーブルと丸線を接続する接続端子が以下のとおり提供される。即ち、この接続端子は、フレキシブルフラットケーブル接続部と、丸線接続部と、を一体的に備える。前記フレキシブルフラットケーブル接続部は、前記フレキシブルフラットケーブルを厚み方向に貫通することが可能なピアスを備える。前記丸線接続部は、前記丸線の先端の導体及び絶縁被覆を挿入可能な筒状に形成され、かつ当該筒の軸方向一端側が閉じた形状である。 According to the third aspect of the present invention, a connection terminal for connecting a flexible flat cable and a round wire is provided as follows. That is, this connection terminal integrally includes a flexible flat cable connection portion and a round wire connection portion. The flexible flat cable connecting portion includes a pierce capable of penetrating the flexible flat cable in a thickness direction. The round wire connecting portion is formed in a cylindrical shape into which the conductor and insulating coating at the tip of the round wire can be inserted, and has one end in the axial direction of the cylinder closed.
　上記のように、丸線接続部を、一端が閉じた筒状に形成することにより、当該丸線接続部の密閉性を高めることができる。これにより、丸線接続部の内部に水分が侵入することを防止できる。従って、丸線の導体がアルミであった場合であっても、電食の発生を防止できる。 As described above, by forming the round wire connecting portion into a cylindrical shape with one end closed, the sealing performance of the round wire connecting portion can be enhanced. Thereby, it can prevent that a water | moisture content penetrate | invades into the inside of a round wire connection part. Therefore, even when the round wire conductor is aluminum, the occurrence of electrolytic corrosion can be prevented.
　上記の接続端子においては、前記フレキシブルフラットケーブル接続部と丸線接続部のあいだの中間部を略筒状に形成しても良い。 In the connection terminal, an intermediate portion between the flexible flat cable connection portion and the round wire connection portion may be formed in a substantially cylindrical shape.
　このように、中間部を略筒状に形成することで、接続端子全体の剛性が向上する。 Thus, the rigidity of the entire connection terminal is improved by forming the intermediate portion in a substantially cylindrical shape.
　上記の接続端子は、以下のように構成することが好ましい。即ち、前記フレキシブルフラットケーブル接続部と丸線接続部のあいだの中間部が略筒状に形成されている。前記丸線接続部は、板材が曲げられて、その両端同士が突き合わせられ、又は当該両端が重ね合わせられて、かつ前記両端同士が直線状に溶接されることとで筒状に形成されている。前記中間部も同様に、板材が曲げられて、その両端同士が突き合わせられ、又は当該両端が重ね合わせられて、かつ前記両端同士が直線状に溶接されることで筒状に形成されている。そして、所定の方向から見たときに、前記丸線接続部の前記直線状の溶接部分と、前記中間部の前記直線状の溶接部分とが、略同一直線上にある。 The above connection terminals are preferably configured as follows. That is, an intermediate portion between the flexible flat cable connecting portion and the round wire connecting portion is formed in a substantially cylindrical shape. The round wire connecting portion is formed in a cylindrical shape by bending a plate material and abutting both ends thereof, or overlapping both ends and welding the both ends linearly. . Similarly, the intermediate portion is also formed into a cylindrical shape by bending the plate material so that both ends thereof are abutted with each other or the both ends are overlapped and the both ends are welded linearly. And when it sees from a predetermined | prescribed direction, the said linear welding part of the said round wire connection part and the said linear welding part of the said intermediate part are on substantially the same straight line.
　上記のように、丸線接続部を形成する際に、曲げた板材の両端同士を溶接することで、継ぎ目の無い筒状に形成できる。これにより、丸線接続部の防水性が更に向上する。また、中間部を形成する際にも溶接して筒状にすることで、当該中間部の強度を向上させることができる。そして、上記のように丸線接続部と中間部の溶接部分を略同一直線上に配置することで、一度の溶接作業で丸線接続部と中間部の両方を溶接できる。これにより、溶接作業を簡略化できる。 As described above, when forming the round wire connecting portion, it can be formed into a seamless cylindrical shape by welding both ends of the bent plate material. Thereby, the waterproofness of a round wire connection part further improves. Also, when the intermediate portion is formed, the strength of the intermediate portion can be improved by welding to form a cylindrical shape. Then, by arranging the welded portions of the round wire connecting portion and the intermediate portion on substantially the same straight line as described above, both the round wire connecting portion and the intermediate portion can be welded by a single welding operation. Thereby, welding work can be simplified.
　本願発明の第４の観点によれば、以下の電線アッセンブリが提供される。即ち、この電線アッセンブリは、上記接続端子（フレキシブルフラットケーブル接続部が略平板状であり、丸線接続部が、一端側が閉じた筒状になっている接続端子）と、前記接続端子の前記フレキシブルフラットケーブル接続部に接続されたフレキシブルフラットケーブルと、前記接続端子の前記丸線接続部に接続された丸線と、を備える。前記フレキシブルフラットケーブルの導体が、前記フレキシブルフラットケーブル接続部に溶接されている。前記丸線の先端は、絶縁被覆の一部を除去して導体を露出させた状態で前記丸線接続部に挿入され、当該丸線接続部が前記導体及び絶縁被覆に圧着されている。 According to a fourth aspect of the present invention, the following wire assembly is provided. That is, the electric wire assembly includes the connection terminal (the flexible flat cable connection portion is a substantially flat plate shape, and the round wire connection portion is a connection terminal having a cylindrical shape with one end closed) and the flexible connection terminal. A flexible flat cable connected to the flat cable connecting portion; and a round wire connected to the round wire connecting portion of the connecting terminal. The conductor of the flexible flat cable is welded to the flexible flat cable connecting portion. The tip of the round wire is inserted into the round wire connecting portion with a portion of the insulating coating removed to expose the conductor, and the round wire connecting portion is crimped to the conductor and the insulating coating.
　このように、フレキシブルフラットケーブルの導体と、フレキシブルフラットケーブル接続部と、を溶接によって接続するので、フレキシブルフラットケーブルにピアスで孔を開けていた従来の接続端子に比べて、フレキシブルフラットケーブル接続部の信頼性を向上させることができる。また、一端が閉じた筒状の丸線接続部を丸線に圧着することにより、当該丸線接続部を密閉することができるので、当該丸線接続部の内部に水分が侵入することを防止できる。 Thus, since the conductor of the flexible flat cable and the flexible flat cable connecting portion are connected by welding, the flexible flat cable connecting portion is more flexible than the conventional connecting terminal in which a hole is pierced in the flexible flat cable. Reliability can be improved. In addition, since the round wire connection portion can be sealed by crimping the cylindrical round wire connection portion with one end closed to the round wire, moisture can be prevented from entering the inside of the round wire connection portion. it can.
　本願発明の第５の観点によれば、以下の電線アッセンブリが提供される。即ち、この電線アッセンブリは、上記接続端子（フレキシブルフラットケーブル接続部が略平板状であり、丸線接続部がオープンバレル式になっている接続端子）と、前記接続端子の前記フレキシブルフラットケーブル接続部に接続されたフレキシブルフラットケーブルと、前記接続端子の前記丸線接続部に接続された丸線と、を備える。前記フレキシブルフラットケーブルの導体が、前記フレキシブルフラットケーブル接続部に溶接されている。前記丸線の先端は、絶縁被覆の一部を除去して導体を露出させた状態で、前記導体及び絶縁被覆が前記丸線接続部に圧着されている。 According to a fifth aspect of the present invention, the following wire assembly is provided. That is, the electric wire assembly includes the connection terminal (a connection terminal in which the flexible flat cable connection portion is substantially flat and the round wire connection portion is an open barrel type), and the flexible flat cable connection portion of the connection terminal. And a round wire connected to the round wire connection portion of the connection terminal. The conductor of the flexible flat cable is welded to the flexible flat cable connecting portion. At the tip of the round wire, the conductor and the insulating coating are pressure-bonded to the round wire connecting portion in a state where a part of the insulating coating is removed and the conductor is exposed.
　このように、フレキシブルフラットケーブルの導体と、フレキシブルフラットケーブル接続部と、を溶接によって接続するので、フレキシブルフラットケーブルにピアスで孔を開けていた従来の接続端子に比べて、フレキシブルフラットケーブル接続部の信頼性を向上させることができる。また、オープンバレル式の丸線接続部を丸線に圧着することにより、信頼性の高い電気的接続を実現できる。 Thus, since the conductor of the flexible flat cable and the flexible flat cable connecting portion are connected by welding, the flexible flat cable connecting portion is more flexible than the conventional connecting terminal in which a hole is pierced in the flexible flat cable. Reliability can be improved. In addition, a highly reliable electrical connection can be realized by crimping the open barrel type round wire connecting portion to the round wire.
　本願発明の第６の観点によれば、以下の電線アッセンブリが提供される。即ち、この電線アッセンブリは、上記接続端子（フレキシブルフラットケーブル接続部がピアスを備え、丸線接続部が、一端側が閉じた筒状になっている接続端子）と、前記接続端子の前記フレキシブルフラットケーブル接続部に接続されたフレキシブルフラットケーブルと、前記接続端子の前記丸線接続部に接続された丸線と、を備える。前記フレキシブルフラットケーブルの導体が、前記フレキシブルフラットケーブル接続部の前記ピアスによって貫通されている。前記丸線の先端は、絶縁被覆の一部を除去して導体を露出させた状態で、前記導体及び絶縁被覆が前記丸線接続部に圧着されている。 According to a sixth aspect of the present invention, the following electric wire assembly is provided. That is, the electric wire assembly includes the connection terminal (the flexible flat cable connection portion is provided with a pierce, and the round wire connection portion is a cylindrical connection terminal having one end closed), and the flexible flat cable of the connection terminal. A flexible flat cable connected to the connection portion; and a round wire connected to the round wire connection portion of the connection terminal. The conductor of the flexible flat cable is penetrated by the piercing of the flexible flat cable connecting portion. At the tip of the round wire, the conductor and the insulating coating are pressure-bonded to the round wire connecting portion in a state where a part of the insulating coating is removed and the conductor is exposed.
　このように、丸線接続部を丸線に圧着することにより、当該丸線接続部を密閉することができるので、当該丸線接続部の内部に水分が侵入することを防止できる。 As described above, since the round wire connecting portion can be sealed by crimping the round wire connecting portion to the round wire, it is possible to prevent moisture from entering the inside of the round wire connecting portion.
　上記の電線アッセンブリにおいて、前記フレキシブルフラットケーブルの導体は銅又は銅系合金からなり、前記丸線の導体はアルミ又はアルミ系合金からなり、前記接続端子は銅又は銅系合金からなるように構成することができる。 In the above wire assembly, the conductor of the flexible flat cable is made of copper or a copper-based alloy, the conductor of the round wire is made of aluminum or an aluminum-based alloy, and the connection terminal is made of copper or a copper-based alloy. be able to.
　接続端子の丸線接続部を一端が閉じた筒状とした場合、防水性に優れるので、丸線の導体がアルミの場合でも電食の発生を防止できる。また、接続端子と、フレキシブルフラットケーブルの導体とを同種の金属とすることで、両者を溶接する場合でも良好な溶接を実現できる。 When the round wire connection part of the connection terminal is made into a cylindrical shape with one end closed, it is excellent in waterproofness, so that the occurrence of electrolytic corrosion can be prevented even when the round wire conductor is aluminum. Further, by using the same type of metal for the connection terminal and the conductor of the flexible flat cable, good welding can be realized even when both are welded.
本発明の第１実施形態に係る電線アッセンブリの一部を拡大して示す斜視図。The perspective view which expands and shows a part of electric wire assembly which concerns on 1st Embodiment of this invention. 電線アッセンブリの組立斜視図。The assembly perspective view of an electric wire assembly. 接続端子の側面断面図。Side surface sectional drawing of a connection terminal. フラット導体をフレキシブルフラットケーブル接続部に溶接する様子を示す側面断面図。Side surface sectional drawing which shows a mode that a flat conductor is welded to a flexible flat cable connection part. フラット導体とフレキシブルフラットケーブル接続部とを溶接する方法の他の例を示す側面断面図。Side surface sectional drawing which shows the other example of the method of welding a flat conductor and a flexible flat cable connection part. 撚線に対して撚線接続部を圧着する様子を示す側面断面図。Side surface sectional drawing which shows a mode that a twisted wire connection part is crimped | bonded with respect to a twisted wire. 中間体の斜視図。The perspective view of an intermediate body. 溶接を行う前の接続端子を示す斜視図。The perspective view which shows the connecting terminal before performing welding. 接続端子の変形例を示す斜視図。The perspective view which shows the modification of a connection terminal. 撚線接続部をオープンバレル式にした変形例を示す斜視図。The perspective view which shows the modification which made the twisted wire connection part the open barrel type. フレキシブルフラットケーブルの絶縁体を除去する形態の別の例を示す斜視図。The perspective view which shows another example of the form which removes the insulator of a flexible flat cable. 本発明の第２実施形態に係る電線アッセンブリの一部を拡大して示す斜視図。The perspective view which expands and shows a part of electric wire assembly which concerns on 2nd Embodiment of this invention. 接続端子によって接続されたフレキシブルフラットケーブル及び撚線を示す斜視図。The perspective view which shows the flexible flat cable and twisted wire which were connected by the connection terminal. 接続端子の斜視図。The perspective view of a connection terminal. 接続端子の側面断面図。Side surface sectional drawing of a connection terminal. 撚線に対して撚線接続部を圧着する様子を示す側面断面図。Side surface sectional drawing which shows a mode that a twisted wire connection part is crimped | bonded with respect to a twisted wire. 中間体の斜視図。The perspective view of an intermediate body. 溶接を行う前の接続端子を示す斜視図。The perspective view which shows the connecting terminal before performing welding. 従来の接続端子を示す斜視図。The perspective view which shows the conventional connection terminal.
　次に、図面を参照して本発明の第１実施形態を説明する。図１は、本発明の第１実施形態に係る電線アッセンブリ１の一部を拡大して示す斜視図である。本実施形態の電線アッセンブリ１は、フレキシブルフラットケーブル２と、複数本の撚線（丸線）３と、接続端子１２と、を備えている。 Next, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an enlarged perspective view showing a part of the wire assembly 1 according to the first embodiment of the present invention. The electric wire assembly 1 of this embodiment includes a flexible flat cable 2, a plurality of stranded wires (round wires) 3, and connection terminals 12.
　撚線３は、導体５と絶縁被覆６からなる周知の構成である。本実施形態の撚線３において、導体５は、複数のアルミニウム素線を束ねたものである。なお、導体５は導体であればアルミニウム以外の素材（例えば銅）から構成されていても良い。絶縁被覆６は、樹脂等の絶縁性を有する素材から構成されており、導体５の周囲を覆うように配置されている。 The stranded wire 3 has a well-known configuration including a conductor 5 and an insulating coating 6. In the stranded wire 3 of the present embodiment, the conductor 5 is a bundle of a plurality of aluminum strands. The conductor 5 may be made of a material other than aluminum (for example, copper) as long as it is a conductor. The insulating coating 6 is made of an insulating material such as a resin and is disposed so as to cover the periphery of the conductor 5.
　フレキシブルフラットケーブル２は、フラット導体７と絶縁体８からなる周知の構成である。フラット導体７は、帯状の金属板ないし金属箔であり、断面矩形の扁平状に形成されている。なお、本実施形態のフレキシブルフラットケーブル２において、フラット導体７は銅製である。ただし、フラット導体７は、導体であれば銅以外の素材（例えばアルミニウム）から構成されていても良い。フラット導体７は、その幅方向で複数並べて配置されている。なお、本実施形態のフレキシブルフラットケーブル２は、導体を４本備えている。 The flexible flat cable 2 has a known configuration including a flat conductor 7 and an insulator 8. The flat conductor 7 is a strip-shaped metal plate or metal foil, and is formed in a flat shape with a rectangular cross section. In the flexible flat cable 2 of the present embodiment, the flat conductor 7 is made of copper. However, the flat conductor 7 may be made of a material other than copper (for example, aluminum) as long as it is a conductor. A plurality of flat conductors 7 are arranged in the width direction. Note that the flexible flat cable 2 of the present embodiment includes four conductors.
　絶縁体８は、絶縁性を有する樹脂製のフィルムである。絶縁体８は、フレキシブルフラットケーブル２が備える複数（本実施形態の場合は４本）のフラット導体７を、厚み方向の両側から挟み込むようにして配置されている。 The insulator 8 is an insulating resin film. The insulator 8 is disposed so as to sandwich a plurality (four in the case of this embodiment) of flat conductors 7 included in the flexible flat cable 2 from both sides in the thickness direction.
　接続端子１２は、フレキシブルフラットケーブル２のフラット導体７と、撚線３の導体５と、を接続している。なお、接続端子１２は、フレキシブルフラットケーブル２の各フラット導体７に１つずつ接続されており、各接続端子１２に撚線３が１本ずつ接続されている。例えば本実施形態の場合、１本のフレキシブルフラットケーブル２には４つの接続端子１２が接続されている。従って、本実施形態では、１本のフレキシブルフラットケーブル２に対して、４本の撚線３が接続される（図１を参照）。 The connection terminal 12 connects the flat conductor 7 of the flexible flat cable 2 and the conductor 5 of the stranded wire 3. Note that one connection terminal 12 is connected to each flat conductor 7 of the flexible flat cable 2, and one stranded wire 3 is connected to each connection terminal 12. For example, in the case of the present embodiment, four connection terminals 12 are connected to one flexible flat cable 2. Therefore, in this embodiment, four stranded wires 3 are connected to one flexible flat cable 2 (see FIG. 1).
　続いて、本実施形態の接続端子１２の構造について詳しく説明する。 Subsequently, the structure of the connection terminal 12 of this embodiment will be described in detail.
　本実施形態の接続端子１２は、表面が錫（Ｓｎ）でメッキされた黄銅等の銅合金から構成されている。なお、接続端子１２は、導体であれば銅以外の素材（例えばアルミニウム）から構成されていても良い。 The connection terminal 12 of this embodiment is made of a copper alloy such as brass whose surface is plated with tin (Sn). In addition, the connection terminal 12 may be comprised from raw materials (for example, aluminum) other than copper, if it is a conductor.
　図２及び図３には、フレキシブルフラットケーブル２及び撚線３が接続される前の状態の接続端子１２が示されている。図２及び図３に示すように、本実施形態の接続端子１２は、フレキシブルフラットケーブル接続部２０と撚線接続部（丸線接続部）２１を一体形成したものである。 2 and 3 show the connection terminal 12 in a state before the flexible flat cable 2 and the stranded wire 3 are connected. As shown in FIG.2 and FIG.3, the connection terminal 12 of this embodiment integrally forms the flexible flat cable connection part 20 and the twisted wire connection part (round wire connection part) 21. As shown in FIG.
　図２及び図３に示すように、フレキシブルフラットケーブル接続部２０には、フレキシブルフラットケーブル２の端部が接続される。撚線接続部２１には、撚線３の端部が接続される。なお、フレキシブルフラットケーブル接続部２０と撚線接続部２１が並ぶ方向を、接続端子１２の「長手方向」と称する。 2 and 3, the flexible flat cable connecting portion 20 is connected to the end portion of the flexible flat cable 2. The end of the stranded wire 3 is connected to the stranded wire connecting portion 21. The direction in which the flexible flat cable connection portion 20 and the stranded wire connection portion 21 are arranged is referred to as the “longitudinal direction” of the connection terminal 12.
　図２及び図３に示すように、接続端子１２のフレキシブルフラットケーブル接続部２０は、前記長手方向に沿って細長く、平板状に形成されている。 As shown in FIGS. 2 and 3, the flexible flat cable connecting portion 20 of the connection terminal 12 is elongated along the longitudinal direction and is formed in a flat plate shape.
　図２及び図３に示すように、撚線接続部２１は、円筒状（中空状）である。本実施形態において、円筒状の撚線接続部２１の軸線方向は、接続端子１２の長手方向に一致している。撚線接続部２１の軸線方向一側の端部（本実施形態ではフレキシブルフラットケーブル接続部２０側の端部）は、防水のために閉じられている（閉鎖部２４）。一方、撚線接続部２１の、閉鎖部２４とは反対側の端部は、撚線３の先端を挿入できるように開放されている（開放部２５）。このように、本実施形態の撚線接続部２１は、一端側が閉じられた筒状に形成されている。 As shown in FIGS. 2 and 3, the stranded wire connecting portion 21 is cylindrical (hollow). In the present embodiment, the axial direction of the cylindrical twisted wire connecting portion 21 coincides with the longitudinal direction of the connection terminal 12. An end portion on one side in the axial direction of the stranded wire connecting portion 21 (an end portion on the flexible flat cable connecting portion 20 side in this embodiment) is closed for waterproofing (closed portion 24). On the other hand, the end of the stranded wire connection portion 21 opposite to the closing portion 24 is opened so that the tip of the stranded wire 3 can be inserted (open portion 25). Thus, the twisted wire connection part 21 of this embodiment is formed in the cylinder shape by which the one end side was closed.
　続いて、フレキシブルフラットケーブル接続部２０に対してフレキシブルフラットケーブル２を接続する方法について説明する。 Subsequently, a method for connecting the flexible flat cable 2 to the flexible flat cable connecting portion 20 will be described.
　まず、作業者は、フレキシブルフラットケーブル接続部２０の端部の絶縁体８を除去し、フラット導体７の先端を露出させる（図２及び図３の状態）。絶縁体８を除去する方法は特に限定されないが、例えば刃物によって絶縁体８に適宜の切り込みを入れた後、当該絶縁体８を物理的に剥ぎ取る。また例えば、レーザによって絶縁体８の樹脂を昇華させることにより、当該絶縁体８を除去しても良い。 First, the operator removes the insulator 8 at the end of the flexible flat cable connecting portion 20 and exposes the tip of the flat conductor 7 (the state shown in FIGS. 2 and 3). Although the method of removing the insulator 8 is not particularly limited, the insulator 8 is physically peeled off after an appropriate cut is made in the insulator 8 with, for example, a blade. Further, for example, the insulator 8 may be removed by sublimating the resin of the insulator 8 with a laser.
　なお、上記のように絶縁体８を除去する際には、フレキシブルフラットケーブル２の一面側のみ絶縁体８を除去し、他面側の絶縁体８は残しておくと好適である（図２及び図３を参照）。このように、片面側の絶縁体８を残しておくことにより、露出させたフラット導体７を、残しておいた絶縁体８によって片面側からサポートできるので、当該フラット導体７が損傷することを防止できる。 In addition, when removing the insulator 8 as described above, it is preferable to remove the insulator 8 only on one surface side of the flexible flat cable 2 and leave the insulator 8 on the other surface side (see FIG. 2 and FIG. 2). (See FIG. 3). Thus, by leaving the insulator 8 on one side, the exposed flat conductor 7 can be supported from the one side by the left insulator 8, thus preventing the flat conductor 7 from being damaged. it can.
　続いて、作業者は、露出させたフラット導体７と、フレキシブルフラットケーブル接続部２０と、を向かい合わせるように配置し（図３）、両者を厚み方向で重ね合わせる。この状態で、フラット導体７と、フレキシブルフラットケーブル接続部２０と、を溶接する（図４）。これにより、フラット導体７と接続端子１２との電気的接続が確保されるとともに、接続端子１２に対してフラット導体７が機械的に固定される。 Subsequently, the operator arranges the exposed flat conductor 7 and the flexible flat cable connecting portion 20 so as to face each other (FIG. 3), and superimposes both in the thickness direction. In this state, the flat conductor 7 and the flexible flat cable connecting portion 20 are welded (FIG. 4). Thereby, the electrical connection between the flat conductor 7 and the connection terminal 12 is ensured, and the flat conductor 7 is mechanically fixed to the connection terminal 12.
　フラット導体７とフレキシブルフラットケーブル接続部２０とを溶接する方法は任意であるが、例えばファイバーレーザ溶接を利用できる。 Although the method of welding the flat conductor 7 and the flexible flat cable connection part 20 is arbitrary, for example, fiber laser welding can be used.
　フラット導体７とフレキシブルフラットケーブル接続部２０を溶接する際には、フレキシブルフラットケーブル接続部２０側から溶接する。というのも、図４に示すように、露出させたフラット導体７から見てフレキシブルフラットケーブル接続部２０とは反対側には、絶縁体８が残してある。従って、フラット導体７側から溶接しようとしても、残してある絶縁体８が邪魔になり、適切に溶接できないのである。 When welding the flat conductor 7 and the flexible flat cable connecting portion 20, welding is performed from the flexible flat cable connecting portion 20 side. This is because, as shown in FIG. 4, the insulator 8 is left on the side opposite to the flexible flat cable connecting portion 20 when viewed from the exposed flat conductor 7. Therefore, even if it is going to weld from the flat conductor 7 side, the remaining insulator 8 becomes obstructive and cannot be welded appropriately.
　例えば図４に示すように、フラット導体７と、フレキシブルフラットケーブル接続部２０と、を厚み方向で重ね合わせた状態で、フレキシブルフラットケーブル接続部２０側に、ファイバーレーザ溶接器のレーザ光照射部８０を配置する。そして、当該レーザ光照射部８０から、フレキシブルフラットケーブル接続部２０に対してレーザ光を照射することにより、当該フレキシブルフラットケーブル接続部２０と、フラット導体７と、を溶接する。 For example, as shown in FIG. 4, in a state where the flat conductor 7 and the flexible flat cable connecting portion 20 are overlapped in the thickness direction, the laser light irradiation portion 80 of the fiber laser welder is provided on the flexible flat cable connecting portion 20 side. Place. And the said flexible flat cable connection part 20 and the flat conductor 7 are welded by irradiating a laser beam with respect to the flexible flat cable connection part 20 from the said laser beam irradiation part 80. FIG.
　このように、本実施形態では、フレキシブルフラットケーブル接続部２０側から溶接を行うことになるので、仮に、フレキシブルフラットケーブル接続部２０が厚すぎたり、当該フレキシブルフラットケーブル接続部２０の表面に凹凸があったりすると、当該フレキシブルフラットケーブル接続部２０と、フラット導体７と、をファイバーレーザ溶接で適切に溶接できない。この点、前述のように、本実施形態のフレキシブルフラットケーブル接続部２０は、平板状に形成されている。即ち、フレキシブルフラットケーブル接続部は、平坦で凹凸が無い形状であり、余計な厚みが無い。これにより、フレキシブルフラットケーブル接続部２０と、フラット導体７と、をファイバーレーザ溶接で適切に溶接できる。 Thus, in this embodiment, since welding is performed from the flexible flat cable connection portion 20 side, the flexible flat cable connection portion 20 is too thick, or the surface of the flexible flat cable connection portion 20 is uneven. If it exists, the said flexible flat cable connection part 20 and the flat conductor 7 cannot be welded appropriately by fiber laser welding. In this regard, as described above, the flexible flat cable connecting portion 20 of the present embodiment is formed in a flat plate shape. That is, the flexible flat cable connecting portion is flat and has no unevenness, and has no extra thickness. Thereby, the flexible flat cable connection part 20 and the flat conductor 7 can be appropriately welded by fiber laser welding.
　なお、本願発明者は、本願発明に至る試行錯誤の過程において、フラット導体７に対して、撚線３の導体５を直接的に溶接する構成も試みた。しかしながら、フラット導体７に対して撚線３の導体５をファイバーレーザ溶接で溶接しようとしても、うまく溶接できない場合があることが分かった。これは、ファイバーレーザ溶接を行うには、撚線３の導体５が厚すぎることが原因であると考えられる。 In addition, the inventor of the present application also tried a configuration in which the conductor 5 of the stranded wire 3 was directly welded to the flat conductor 7 in the process of trial and error leading to the present invention. However, it has been found that even if the conductor 5 of the stranded wire 3 is welded to the flat conductor 7 by fiber laser welding, it may not be welded well. It is considered that this is because the conductor 5 of the stranded wire 3 is too thick for fiber laser welding.
　そこで本実施形態の接続端子１２においては、フレキシブルフラットケーブル接続部２０を、撚線３の導体５よりも薄く構成している。より具体的には、フレキシブルフラットケーブル接続部２０の厚み方向の寸法Ｔ１（図３参照）を、撚線接続部２１に接続される撚線３の導体５の径方向の寸法Ｄ１（図３参照）よりも小さくしている。これにより、フラット導体７に対して撚線３の導体５を直接的に溶接することが難しい場合であっても、本実施形態の接続端子１２を利用することで、フラット導体７に対する溶接を適切に行うことができる。 Therefore, in the connection terminal 12 of the present embodiment, the flexible flat cable connection portion 20 is configured to be thinner than the conductor 5 of the stranded wire 3. More specifically, the dimension T1 (see FIG. 3) in the thickness direction of the flexible flat cable connecting portion 20 is set to the dimension D1 in the radial direction of the conductor 5 of the stranded wire 3 connected to the stranded wire connecting portion 21 (see FIG. 3). ) Smaller than. Accordingly, even when it is difficult to directly weld the conductor 5 of the stranded wire 3 to the flat conductor 7, the connection terminal 12 of the present embodiment is used to appropriately weld the flat conductor 7. Can be done.
　ただし、上記の接続方法は一例であって、他の方法で接続することもできる。例えば図５に示すように、フレキシブルフラットケーブル２の片側だけでなく両側の絶縁体８を除去した上で、ファイバーレーザ溶接器のレーザ光照射部８０をフレキシブルフラットケーブル２側に配置して溶接しても良い。 However, the above connection method is an example, and other methods can be used. For example, as shown in FIG. 5, the insulator 8 on both sides as well as one side of the flexible flat cable 2 is removed, and then the laser light irradiation unit 80 of the fiber laser welder is arranged on the flexible flat cable 2 side and welded. May be.
　次に、撚線接続部２１に対して撚線３を接続する方法について説明する。 Next, a method for connecting the stranded wire 3 to the stranded wire connecting portion 21 will be described.
　まず、作業者は、撚線３の先端の所定長さの部分の絶縁被覆６を除去して、導体５が露出した状態とする（図２及び３の状態）。この状態の撚線３の先端を、撚線接続部２１の開放部２５から、当該撚線接続部２１の内部に挿入する。このとき、導体５が露出している部分だけでなく、導体５が露出していない部分（絶縁被覆６が除去されていない部分）も、撚線接続部２１に挿入する。 First, the operator removes the insulating coating 6 at a predetermined length at the tip of the stranded wire 3 so that the conductor 5 is exposed (the state shown in FIGS. 2 and 3). The tip of the stranded wire 3 in this state is inserted into the stranded wire connecting portion 21 from the open portion 25 of the stranded wire connecting portion 21. At this time, not only the portion where the conductor 5 is exposed but also the portion where the conductor 5 is not exposed (portion where the insulating coating 6 is not removed) is inserted into the stranded wire connection portion 21.
　次に、作業者は、第１圧着型７１と第２圧着型７２とから構成される圧着工具を操作して、撚線接続部２１を挟み込むようにして圧着する（図６（ａ）を参照）。前述のように、撚線３の先端の導体５は露出させられているので、当該導体５に対して撚線接続部２１が圧着させられる（図６（ｂ））。これにより、撚線３の導体５と、撚線接続部２１と、の電気的接続が確保される。 Next, the operator operates the crimping tool composed of the first crimping die 71 and the second crimping die 72 to crimp the stranded wire connection portion 21 (see FIG. 6A). ). As described above, since the conductor 5 at the tip of the stranded wire 3 is exposed, the stranded wire connecting portion 21 is crimped to the conductor 5 (FIG. 6B). Thereby, the electrical connection of the conductor 5 of the twisted wire 3 and the twisted wire connection part 21 is ensured.
　また、撚線接続部２１は、撚線３の絶縁被覆６にも圧着させられる。これにより、撚線接続部２１が、撚線３の絶縁被覆６に密着するので、撚線接続部２１の開放部２５が密閉される。これにより、開放部２５から撚線接続部２１内への浸水を防止できる。 Further, the stranded wire connecting portion 21 is also crimped to the insulating coating 6 of the stranded wire 3. Thereby, since the stranded wire connection part 21 closely_contact | adheres to the insulation coating 6 of the stranded wire 3, the open part 25 of the stranded wire connection part 21 is sealed. Thereby, it is possible to prevent water from entering the stranded wire connecting portion 21 from the open portion 25.
　前述のように、本実施形態では、撚線３の導体５をアルミニウムで構成し、接続端子１２を黄銅で構成している。このように、接続端子１２と、撚線３の導体５とで異種金属を用いる場合、電食を発生させないためにも、撚線接続部２１には高い防水性能が要求される。この点、本実施形態では上述のように、一端側を閉じた筒状に形成した撚線接続部２１内に撚線３の端部を挿入し、かつ当該撚線接続部２１を撚線３の絶縁被覆６に対して圧着することで、撚線接続部２１を密閉している。これにより、撚線接続部２１内への浸水を防止できるので、電食を防止することができる。また、本実施形態の構成によれば、撚線接続部２１を防水するための止水剤等は不要であるから、簡単な構成で撚線接続部２１の防水を実現できる。 As described above, in this embodiment, the conductor 5 of the stranded wire 3 is made of aluminum, and the connection terminal 12 is made of brass. As described above, when different metals are used for the connection terminal 12 and the conductor 5 of the stranded wire 3, the stranded wire connection portion 21 is required to have high waterproof performance in order not to cause electrolytic corrosion. In this regard, in this embodiment, as described above, the end of the stranded wire 3 is inserted into the stranded wire connecting portion 21 formed in a cylindrical shape with one end closed, and the stranded wire connecting portion 21 is connected to the stranded wire 3. The stranded wire connection portion 21 is hermetically sealed by pressure bonding to the insulating coating 6. Thereby, since the water immersion in the twisted wire connection part 21 can be prevented, electrolytic corrosion can be prevented. Moreover, according to the structure of this embodiment, since the water stop agent etc. for waterproofing the twisted wire connection part 21 are unnecessary, waterproofing of the twisted wire connection part 21 is realizable by simple structure.
　なお上記では、フレキシブルフラットケーブル接続部２０に対してフレキシブルフラットケーブル２を接続する方法について説明し、その後で、撚線接続部２１に対して撚線３を接続する方法について説明したが、接続端子１２に対してフレキシブルフラットケーブル２と撚線３を接続する順番は特に限定されない。 In the above description, the method for connecting the flexible flat cable 2 to the flexible flat cable connecting portion 20 is described, and then the method for connecting the stranded wire 3 to the stranded wire connecting portion 21 is described. The order in which the flexible flat cable 2 and the stranded wire 3 are connected to 12 is not particularly limited.
　続いて、本実施形態の接続端子１２の製造方法について説明する。 Subsequently, a method for manufacturing the connection terminal 12 of this embodiment will be described.
　本実施形態の接続端子１２は、一枚の板材を打ち抜いて図７のような中間体３０を形成した後、当該中間体３０を適宜折り曲げ加工等することにより形成されている。 The connection terminal 12 of the present embodiment is formed by punching a single plate material to form the intermediate body 30 as shown in FIG. 7, and then bending the intermediate body 30 as appropriate.
　図７の中間体３０には、フレキシブルフラットケーブル接続部２０に相当する部分が、長手方向に沿って細長く、平板状に形成されている。 In the intermediate body 30 in FIG. 7, a portion corresponding to the flexible flat cable connecting portion 20 is elongated along the longitudinal direction and is formed in a flat plate shape.
　図７の中間体３０において、撚線接続部２１に相当する部分は、その一部が幅方向に向けて突出する第１突出部３１として構成されている。ここで「幅方向」とは、板状の中間体３０が構成する平面内において、接続端子１２の長手方向とは直交する方向を指すものとする。なお、本実施形態において、第１突出部３１は、矩形状に突出するように形成されている。 7, a portion corresponding to the stranded wire connection portion 21 is configured as a first protrusion 31 that partially protrudes in the width direction. Here, the “width direction” refers to a direction orthogonal to the longitudinal direction of the connection terminal 12 in the plane formed by the plate-like intermediate body 30. In the present embodiment, the first projecting portion 31 is formed so as to project in a rectangular shape.
　図７の中間体３０から撚線接続部２１を成形する際には、第１突出部３１を折り曲げて、当該第１突出部３１の突出方向での両端面同士を突き合わせることにより、撚線接続部２１を略円筒状に形成する（図８の状態）。 When forming the stranded wire connection portion 21 from the intermediate body 30 in FIG. 7, the first protruding portion 31 is bent, and both end surfaces in the protruding direction of the first protruding portion 31 are butted together, thereby twisting the stranded wire. The connecting portion 21 is formed in a substantially cylindrical shape (state shown in FIG. 8).
　この状態で、第１突出部３１の端面同士の間に隙間が存在している。この隙間の部分は、撚線接続部２１の周面の「継ぎ目」と言うことができる。本実施形態では、前記第１突出部３１の端面同士を溶接することにより（「継ぎ目」の部分を溶接することにより）、溶接部３３を形成する（図２）。これにより、前記継ぎ目の隙間を塞ぐことができるので、撚線接続部２１の周面を連続的に（隙間が無いように）構成できる。 In this state, there is a gap between the end surfaces of the first protrusions 31. This gap portion can be said to be a “seam” on the peripheral surface of the stranded wire connection portion 21. In this embodiment, the welded portion 33 is formed by welding the end surfaces of the first projecting portions 31 (by welding the “seam” portion) (FIG. 2). Thereby, since the clearance gap of the said seam can be block | closed, the surrounding surface of the twisted wire connection part 21 can be comprised continuously (as there is no clearance gap).
　溶接部３３の溶接を行う方法は任意であるが、例えばファイバーレーザで溶接を行うことができる。なお、本実施形態では、第１突出部３１の両端面同士を突き合わせた状態（図８）において、撚線接続部２１の「継ぎ目」が略直線状となるようにしている。これにより、溶接部３３を直線状に形成できるので、溶接を行い易い。 The method of welding the welded portion 33 is arbitrary, but for example, welding can be performed with a fiber laser. In the present embodiment, the “seam” of the stranded wire connecting portion 21 is substantially linear in a state where both end faces of the first protruding portion 31 are butted together (FIG. 8). Thereby, since the welding part 33 can be formed linearly, it is easy to weld.
　次に、上記のようにして略円筒状に構成した撚線接続部２１の、軸方向一側の端部（本実施形態ではフレキシブルフラットケーブル接続部２０側の端部）を圧縮して潰す。そして、当該潰した箇所に溶接を行うことで、閉鎖部２４を形成する（図２）。なお、閉鎖部２４の溶接を行う方法は任意であるが、溶接部３３と同様にファイバーレーザで溶接を行うことができる。 Next, the end on one side in the axial direction (the end on the flexible flat cable connecting portion 20 side in the present embodiment) of the stranded wire connecting portion 21 configured in a substantially cylindrical shape as described above is compressed and crushed. And the closure part 24 is formed by welding to the said crushed location (FIG. 2). In addition, although the method of welding the closing part 24 is arbitrary, similarly to the welding part 33, welding can be performed with a fiber laser.
　以上の処理を行うことにより、一側の端部が閉じられた略円筒状の撚線接続部２１が完成する。撚線接続部２１の周面の「継ぎ目」と、当該撚線接続部２１の一側の端部と、をそれぞれ溶接によって塞ぐことにより、密閉性に優れた撚線接続部２１を実現できる。 By performing the above processing, the substantially cylindrical stranded wire connecting portion 21 with one end closed is completed. By closing the “seam” on the peripheral surface of the stranded wire connecting portion 21 and the end portion on one side of the stranded wire connecting portion 21 by welding, the stranded wire connecting portion 21 having excellent airtightness can be realized.
　以上で説明したように、本実施形態の接続端子１２は、フレキシブルフラットケーブル接続部２０と、撚線接続部２１と、を一体的に備えている。フレキシブルフラットケーブル接続部２０は、略平板状である。撚線接続部２１は、撚線３の先端の導体５及び絶縁被覆６を挿入可能な筒状に形成され、かつ当該筒の軸方向一端側が閉じた形状である。 As described above, the connection terminal 12 of the present embodiment integrally includes the flexible flat cable connection portion 20 and the stranded wire connection portion 21. The flexible flat cable connecting portion 20 has a substantially flat plate shape. The stranded wire connecting portion 21 is formed in a cylindrical shape into which the conductor 5 and the insulating coating 6 at the tip of the stranded wire 3 can be inserted, and the one end side in the axial direction of the cylinder is closed.
　このように、フレキシブルフラットケーブル接続部２０を板状に形成することで、当該フレキシブルフラットケーブル接続部２０に対して、フレキシブルフラットケーブル２のフラット導体７を溶接できる。これにより、ピアスによって孔を開ける従来の接続端子にくらべて、フレキシブルフラットケーブル２に無理な力がかからない。従って、フレキシブルフラットケーブル接続部２０の信頼性を向上させることができる。また、撚線接続部２１を、一端側を閉じた筒状としたので、防水性の高い接続構造を実現できる。 Thus, the flat conductor 7 of the flexible flat cable 2 can be welded to the flexible flat cable connecting portion 20 by forming the flexible flat cable connecting portion 20 in a plate shape. Thereby, an unreasonable force is not applied to the flexible flat cable 2 as compared with a conventional connection terminal in which a hole is opened by piercing. Therefore, the reliability of the flexible flat cable connecting portion 20 can be improved. Moreover, since the twisted wire connection part 21 was made into the cylinder shape which closed the one end side, a highly waterproof connection structure is realizable.
　また上記のように、本実施形態の接続端子１２において、フレキシブルフラットケーブル接続部２０の厚み方向の寸法Ｔ１は、撚線接続部２１に挿入される撚線３の導体５の径方向の寸法Ｄ１よりも小さい。 Further, as described above, in the connection terminal 12 of the present embodiment, the dimension T1 in the thickness direction of the flexible flat cable connection part 20 is the dimension D1 in the radial direction of the conductor 5 of the stranded wire 3 inserted into the stranded wire connection part 21. Smaller than.
　このように、フレキシブルフラットケーブル接続部２０を比較的薄い形状とすることで、当該フレキシブルフラットケーブル接続部２０を、フレキシブルフラットケーブル２のフラット導体７に対して適切に溶接できる。 Thus, the flexible flat cable connecting portion 20 can be appropriately welded to the flat conductor 7 of the flexible flat cable 2 by making the flexible flat cable connecting portion 20 relatively thin.
　また上記のように、本実施形態の電線アッセンブリ１は、上記接続端子１２と、接続端子１２のフレキシブルフラットケーブル接続部２０に接続されたフレキシブルフラットケーブル２と、接続端子１２の撚線接続部２１に接続された撚線３と、を備える。フレキシブルフラットケーブル２のフラット導体７が、フレキシブルフラットケーブル接続部２０に溶接されている。撚線３の先端は、絶縁被覆６の一部を除去して導体５を露出させた状態で撚線接続部２１に挿入され、当該撚線接続部２１が導体５及び絶縁被覆６に圧着されている。 As described above, the wire assembly 1 of the present embodiment includes the connection terminal 12, the flexible flat cable 2 connected to the flexible flat cable connection portion 20 of the connection terminal 12, and the stranded wire connection portion 21 of the connection terminal 12. And a stranded wire 3 connected to. The flat conductor 7 of the flexible flat cable 2 is welded to the flexible flat cable connecting portion 20. The tip of the stranded wire 3 is inserted into the stranded wire connecting portion 21 with the conductor 5 exposed by removing a part of the insulating coating 6, and the stranded wire connecting portion 21 is crimped to the conductor 5 and the insulating coating 6. ing.
　このように、フレキシブルフラットケーブル２のフラット導体７と、フレキシブルフラットケーブル接続部２０と、を溶接によって接続するので、フレキシブルフラットケーブルにピアスで孔を開けていた従来の接続端子に比べて、フレキシブルフラットケーブル接続部２０の信頼性を向上させることができる。また、撚線接続部２１を撚線３に圧着することにより、当該撚線接続部２１を密閉することができるので、当該撚線接続部２１の内部に水分が侵入することを防止できる。 Thus, since the flat conductor 7 of the flexible flat cable 2 and the flexible flat cable connecting portion 20 are connected by welding, the flexible flat cable is more flexible than a conventional connection terminal in which a hole is pierced in the flexible flat cable. The reliability of the cable connection part 20 can be improved. Moreover, since the said twisted wire connection part 21 can be sealed by crimping | bonding the twisted wire connection part 21 to the twisted wire 3, it can prevent that a water | moisture content penetrate | invades inside the said twisted wire connection part 21. FIG.
　また上記のように、本実施形態の電線アッセンブリ１において、フレキシブルフラットケーブルのフラット導体７は銅からなり、撚線３の導体５はアルミからなり、接続端子１２は銅系合金（黄銅）からなる。 Further, as described above, in the electric wire assembly 1 of the present embodiment, the flat conductor 7 of the flexible flat cable is made of copper, the conductor 5 of the stranded wire 3 is made of aluminum, and the connection terminal 12 is made of a copper-based alloy (brass). .
　即ち、本願発明の接続端子１２は撚線接続部２１の防水性に優れるので、撚線の導体５がアルミの場合でも電食の発生を防止できる。また、接続端子１２と、フレキシブルフラットケーブル２のフラット導体７とを同種の金属とすることで、両者を良好に溶接できる。 That is, since the connection terminal 12 of the present invention is excellent in the waterproof property of the stranded wire connecting portion 21, even when the stranded wire conductor 5 is aluminum, the occurrence of electrolytic corrosion can be prevented. Moreover, both can be favorably welded by making the connecting terminal 12 and the flat conductor 7 of the flexible flat cable 2 into the same kind of metal.
　以上に本発明の第１実施形態を説明したが、上記の構成は例えば以下のように変更することができる。 Although the first embodiment of the present invention has been described above, the above configuration can be modified as follows, for example.
　例えば図９の接続端子１２ｘに示すように、フレキシブルフラットケーブル接続部２０と、撚線接続部２１と、のあいだの中間部２２を、筒状（角筒状）に形成しても良い。このように、中間部２２を筒状に形成することで、接続端子１２の剛性を向上させることができる。 For example, as shown in the connection terminal 12x in FIG. 9, the intermediate portion 22 between the flexible flat cable connection portion 20 and the stranded wire connection portion 21 may be formed in a cylindrical shape (square tube shape). Thus, the rigidity of the connection terminal 12 can be improved by forming the intermediate part 22 in a cylindrical shape.
　例えば図１０の接続端子１２ｙに示すように、一端が閉じた筒状の撚線接続部２１に代えて、いわゆるオープンバレル式の撚線接続部４１を備えるように構成しても良い。この撚線接続部４１は、導体圧着部４２と、被覆圧着部４３と、を有している。導体圧着部４２をカシメることにより、当該導体圧着部４２を、撚線３の導体５に圧着させる。また、被覆圧着部４３をカシメることにより、当該被覆圧着部４３を、撚線３の絶縁被覆６に圧着させる。 For example, as shown in the connection terminal 12y in FIG. 10, a so-called open barrel type twisted wire connecting portion 41 may be provided instead of the cylindrical twisted wire connecting portion 21 whose one end is closed. The stranded wire connection portion 41 includes a conductor crimping portion 42 and a covering crimping portion 43. The conductor crimping portion 42 is crimped to the conductor 5 of the stranded wire 3 by crimping the conductor crimping portion 42. Further, the coated crimping portion 43 is crimped to the insulating coating 6 of the stranded wire 3 by crimping the coated crimped portion 43.
　上記実施形態において、一端が閉じた筒状の撚線接続部２１は、曲げた第１突出部３１の端部同士を突き合わせて筒状にしているが、これに限らず、第１突出部３１の端部同士を厚み方向で重ね合わせても良い。この場合、当該重ね合わせた部分を溶接して溶接部３３を形成する。 In the said embodiment, although the cylindrical twisted wire connection part 21 in which the one end was closed has faced the edge parts of the 1st bent part 31 bent, it is not restricted to this but is the 1st protruding part 31. These end portions may be overlapped in the thickness direction. In this case, the welded portion 33 is formed by welding the overlapped portions.
　上記実施形態では、フレキシブルフラットケーブル接続部２０と撚線接続部２１を、一枚の板材から一体形成している。しかしこれに限らず、例えば、フレキシブルフラットケーブル接続部２０と撚線接続部２１とを別々の部材から構成し、後から溶接などで連結することにより、フレキシブルフラットケーブル接続部２０と撚線接続部２１を一体化しても良い。 In the above embodiment, the flexible flat cable connecting portion 20 and the stranded wire connecting portion 21 are integrally formed from a single plate material. However, the present invention is not limited to this. For example, the flexible flat cable connection portion 20 and the stranded wire connection portion 21 are formed of separate members, and are connected later by welding or the like, whereby the flexible flat cable connection portion 20 and the stranded wire connection portion. 21 may be integrated.
　図２では、フレキシブルフラットケーブル２の絶縁体８の先端部分を全体的に除去してフラット導体７を露出させているが、絶縁体８を除去する形態はこれに限定されず、フラット導体７を露出させることができれば良い。例えば図１１（ａ）に示すように、フラット導体７ごとに、絶縁体８をコ字状（又はＵ字状）に除去しても良い。また、例えば図１１（ｂ）に示すように、絶縁体８に窓状の開口部を形成することで、フラット導体７を露出させても良い。ただし、図１１（ｂ）の場合、フラット導体７の先端が完全には露出していないので、当該フラット導体７とフレキシブルフラットケーブル接続部２０を重ね合わせたときに、絶縁体８が邪魔になって、フラット導体７とフレキシブルフラットケーブル接続部２０の間に絶縁体８の厚み分の隙間が生じる場合がある。従って、このような場合に溶接を行うためには、フラット導体７とフレキシブルフラットケーブル接続部２０を密着させるように厚み方向の力を加えたり、溶接機の出力を上げるなど、何らかの工夫が必要である。 In FIG. 2, the tip portion of the insulator 8 of the flexible flat cable 2 is entirely removed to expose the flat conductor 7, but the form of removing the insulator 8 is not limited to this, and the flat conductor 7 is It only needs to be exposed. For example, as illustrated in FIG. 11A, the insulator 8 may be removed in a U shape (or U shape) for each flat conductor 7. For example, as shown in FIG. 11B, the flat conductor 7 may be exposed by forming a window-like opening in the insulator 8. However, in the case of FIG. 11B, since the tip of the flat conductor 7 is not completely exposed, the insulator 8 becomes an obstacle when the flat conductor 7 and the flexible flat cable connecting portion 20 are overlapped. Thus, a gap corresponding to the thickness of the insulator 8 may occur between the flat conductor 7 and the flexible flat cable connecting portion 20. Therefore, in order to perform welding in such a case, some device is required such as applying a force in the thickness direction so as to bring the flat conductor 7 and the flexible flat cable connecting portion 20 into close contact with each other and increasing the output of the welding machine. is there.
　絶縁体８とフレキシブルフラットケーブル接続部２０との溶接は、抵抗溶接で行うこともできる。抵抗溶接を行う場合は、フラット導体７と、フレキシブルフラットケーブル接続部２０を、厚み方向でプローブによって挟み込んだうえ、当該厚み方向に電流を流して溶接を行う。なお、このように抵抗溶接を行う場合は、原理上、フラット導体７の厚み方向に電流を流す必要がある。そこで、抵抗溶接を行う場合は、フラット導体７を露出させる際に、フレキシブルフラットケーブル２の両面の絶縁体８を除去する。 The welding of the insulator 8 and the flexible flat cable connecting portion 20 can also be performed by resistance welding. When resistance welding is performed, the flat conductor 7 and the flexible flat cable connecting portion 20 are sandwiched between probes in the thickness direction, and welding is performed by passing an electric current in the thickness direction. In addition, when performing resistance welding in this way, it is necessary to flow an electric current in the thickness direction of the flat conductor 7 in principle. Therefore, when performing resistance welding, the insulator 8 on both surfaces of the flexible flat cable 2 is removed when the flat conductor 7 is exposed.
　次に、第２実施形態を説明する。図１２は、本発明の第２実施形態に係る電線アッセンブリ１の一部を拡大して示す斜視図である。なお、本実施形態の説明においては、前述の実施形態と同一又は類似の部材には図面に同一の符号を付し、説明を省略する場合がある。 Next, a second embodiment will be described. FIG. 12 is an enlarged perspective view showing a part of the wire assembly 1 according to the second embodiment of the present invention. In the description of the present embodiment, the same or similar members as those of the above-described embodiment may be denoted by the same reference numerals in the drawings, and description thereof may be omitted.
　本実施形態の電線アッセンブリ１は、複数本のフレキシブルフラットケーブル２と、複数本の撚線（丸線）３と、コネクタ部４と、を備えている。 The electric wire assembly 1 of this embodiment includes a plurality of flexible flat cables 2, a plurality of stranded wires (round wires) 3, and a connector portion 4.
　コネクタ部４は、外側ケース５１と、内側ケース５２と、接続端子１２ｚと、から構成されている。 The connector part 4 is comprised from the outer side case 51, the inner side case 52, and the connection terminal 12z.
　図２に示すように、接続端子１２ｚは、フレキシブルフラットケーブル２のフラット導体７と、撚線３の導体５と、を接続している。なお、接続端子１２ｚは、フレキシブルフラットケーブル２の各フラット導体７に１つずつ接続されており、各接続端子１２ｚに撚線３が１本ずつ接続されている。例えば本実施形態の場合、１本のフレキシブルフラットケーブル２には４つの接続端子１２ｚが接続されている。従って、本実施形態では、１本のフレキシブルフラットケーブル２に対して、４本の撚線３が接続される（図１２を参照）。 As shown in FIG. 2, the connection terminal 12 z connects the flat conductor 7 of the flexible flat cable 2 and the conductor 5 of the stranded wire 3. Note that one connection terminal 12z is connected to each flat conductor 7 of the flexible flat cable 2, and one stranded wire 3 is connected to each connection terminal 12z. For example, in the case of this embodiment, four connection terminals 12 z are connected to one flexible flat cable 2. Therefore, in this embodiment, four twisted wires 3 are connected to one flexible flat cable 2 (see FIG. 12).
　内側ケース５２は、１本のフレキシブルフラットケーブル２に接続された複数（本実施形態の場合は４つ）の接続端子１２ｚを収容できるように構成されている。具体的には図１３に示すように、内側ケース５２は、各接続端子１２ｚを収容できる収容空間５３を複数（本実施形態の場合は４つ）有している。また、内側ケース５２には、各接続端子１２ｚを位置決めするための位置決め突起５４が設けられている。 The inner case 52 is configured to accommodate a plurality (four in this embodiment) of connection terminals 12z connected to one flexible flat cable 2. Specifically, as shown in FIG. 13, the inner case 52 has a plurality of accommodation spaces 53 (four in this embodiment) that can accommodate the connection terminals 12z. The inner case 52 is provided with positioning protrusions 54 for positioning each connection terminal 12z.
　内側ケース５２は、前記収容空間５３に接続端子１２ｚを収容した状態で、フレキシブルフラットケーブル２の厚み方向に積層できるように構成されている（図１２の状態）。外側ケース５１（詳細な図示は省略）は、積層した状態の複数の内側ケース５２を収容可能に構成されている。 The inner case 52 is configured to be laminated in the thickness direction of the flexible flat cable 2 in a state where the connection terminal 12z is accommodated in the accommodation space 53 (state of FIG. 12). The outer case 51 (detailed illustration is omitted) is configured to accommodate a plurality of stacked inner cases 52.
　以上の構成のコネクタ部４により、フレキシブルフラットケーブル２と撚線３が電気的に接続されている。 The flexible flat cable 2 and the stranded wire 3 are electrically connected by the connector part 4 having the above configuration.
　続いて、本実施形態の接続端子１２ｚの構造について詳しく説明する。 Subsequently, the structure of the connection terminal 12z of this embodiment will be described in detail.
　本実施形態の接続端子１２ｚは、上述の第１実施形態と同様に、表面が錫（Ｓｎ）でメッキされた黄銅等の銅合金から構成されている。なお、接続端子１２ｚは、導体であれば銅以外の素材（例えばアルミニウム）から構成されていても良い。 The connection terminal 12z of this embodiment is made of a copper alloy such as brass whose surface is plated with tin (Sn), as in the first embodiment. The connection terminal 12z may be made of a material other than copper (for example, aluminum) as long as it is a conductor.
　本実施形態の接続端子１２ｚは、フレキシブルフラットケーブル接続部２０ｘと撚線接続部（丸線接続部）２１を一体形成したものである。フレキシブルフラットケーブル接続部２０ｘと撚線接続部２１が並ぶ方向を、接続端子１２ｚの「長手方向」と称する。図２に示すように、フレキシブルフラットケーブル接続部２０ｘには、フレキシブルフラットケーブル２の端部が接続される。撚線接続部２１には、撚線３の端部が接続される。 The connection terminal 12z of this embodiment is formed by integrally forming a flexible flat cable connection portion 20x and a stranded wire connection portion (round wire connection portion) 21. The direction in which the flexible flat cable connection portion 20x and the stranded wire connection portion 21 are arranged is referred to as the “longitudinal direction” of the connection terminal 12z. As shown in FIG. 2, the end portion of the flexible flat cable 2 is connected to the flexible flat cable connecting portion 20x. The end of the stranded wire 3 is connected to the stranded wire connecting portion 21.
　図１４及び図１５には、フレキシブルフラットケーブル２及び撚線３が接続される前の状態の接続端子１２ｚが示されている。図３に示すように、接続端子１２ｚのフレキシブルフラットケーブル接続部２０ｘは、長手方向に直交する方向に突出する複数のピアス２３を有している。なお、ピアス２３が突出している方向と平行な方向を、「突出方向」と称する。 14 and 15 show the connection terminal 12z in a state before the flexible flat cable 2 and the stranded wire 3 are connected. As shown in FIG. 3, the flexible flat cable connecting portion 20x of the connection terminal 12z has a plurality of piercings 23 protruding in a direction orthogonal to the longitudinal direction. A direction parallel to the direction in which the piercing 23 protrudes is referred to as a “projection direction”.
　撚線接続部２１の構成は、上述の第１実施形態と実質的に同様であるため、説明は省略する。 Since the configuration of the stranded wire connection portion 21 is substantially the same as that of the first embodiment described above, description thereof is omitted.
　図１４に示すように、本実施形態の接続端子１２ｚにおいて、フレキシブルフラットケーブル接続部２０ｘと撚線接続部２１のあいだの中間部２２は、角筒状に形成されている。このように、中間部２２を角筒状に構成することにより、接続端子１２ｚの剛性を高めることができる。なお、この中間部２２の軸線方向は、接続端子１２ｚの長手方向に一致している。 As shown in FIG. 14, in the connection terminal 12z of the present embodiment, the intermediate portion 22 between the flexible flat cable connection portion 20x and the stranded wire connection portion 21 is formed in a rectangular tube shape. Thus, the rigidity of the connection terminal 12z can be increased by configuring the intermediate portion 22 in a rectangular tube shape. It should be noted that the axial direction of the intermediate portion 22 coincides with the longitudinal direction of the connection terminal 12z.
　中間部２２は、前記内側ケース５２の収容空間５３に嵌合するように形成されている。また、中間部２２には、内側ケース５２に形成されている位置決め突起５４に係合する位置決め孔２６が形成されている（図１３及び図１５）。この構成で、中間部２２を収容空間５３に嵌合させ、位置決め孔２６に位置決め突起５４を挿入することで、接続端子１２ｚを内側ケース５２に対して位置決めした状態で取り付けることができる。 The intermediate part 22 is formed so as to fit in the accommodation space 53 of the inner case 52. Further, a positioning hole 26 that engages with a positioning projection 54 formed in the inner case 52 is formed in the intermediate portion 22 (FIGS. 13 and 15). With this configuration, the connecting portion 12z can be attached in a state of being positioned with respect to the inner case 52 by fitting the intermediate portion 22 into the accommodation space 53 and inserting the positioning projection 54 into the positioning hole 26.
　続いて、フレキシブルフラットケーブル接続部２０ｘに対してフレキシブルフラットケーブル２を接続する方法について説明する。 Subsequently, a method for connecting the flexible flat cable 2 to the flexible flat cable connecting portion 20x will be described.
　まず、作業者は、フレキシブルフラットケーブル接続部２０ｘのピアス２３を、フレキシブルフラットケーブル２に対して、その厚み方向から貫通させる。このとき、ピアス２３は、フレキシブルフラットケーブル２のフラット導体７及び絶縁体８を貫通する。これにより、フレキシブルフラットケーブル２のフラット導体７と、フレキシブルフラットケーブル接続部２０ｘと、の電気的接続が確保される。なお、上記のように絶縁体８ごとフラット導体７をピアス２３で貫通させて導通を図るので、絶縁体８を除去してフラット導体７を露出させておく必要はない。 First, the operator penetrates the flexible flat cable 2 from the thickness direction with respect to the pierce 23 of the flexible flat cable connecting portion 20x. At this time, the pierce 23 penetrates the flat conductor 7 and the insulator 8 of the flexible flat cable 2. Thereby, the electrical connection of the flat conductor 7 of the flexible flat cable 2 and the flexible flat cable connection part 20x is ensured. In addition, since the flat conductor 7 is penetrated by the piercing 23 together with the insulator 8 as described above, it is not necessary to remove the insulator 8 and expose the flat conductor 7.
　続いて、作業者は、フレキシブルフラットケーブル２を貫通させたピアス２３の先端を折り曲げる（図１３の状態）。これにより、フレキシブルフラットケーブル接続部２０ｘに対してフレキシブルフラットケーブル２が機械的に固定され、当該フレキシブルフラットケーブル２からピアス２３が抜けてしまうことを防止できる。 Subsequently, the operator bends the tip of the piercing 23 that has penetrated the flexible flat cable 2 (state shown in FIG. 13). Thereby, the flexible flat cable 2 is mechanically fixed with respect to the flexible flat cable connection part 20x, and it can prevent that the piercing | piercing 23 comes off from the said flexible flat cable 2. FIG.
　なお、撚線接続部２１に対して撚線３を接続する方法については、上述の第１実施形態と同様であるため（図１５及び図１６）、説明を省略する。上記では、フレキシブルフラットケーブル接続部２０ｘに対してフレキシブルフラットケーブル２を接続する方法について説明し、その後で、撚線接続部２１に対して撚線３を接続する方法について説明したが、接続端子１２ｚに対してフレキシブルフラットケーブル２と撚線３を接続する順番は特に限定されない。 In addition, about the method of connecting the twisted wire 3 with respect to the twisted wire connection part 21, since it is the same as that of the above-mentioned 1st Embodiment (FIGS. 15 and 16), description is abbreviate | omitted. In the above description, the method for connecting the flexible flat cable 2 to the flexible flat cable connecting portion 20x is described, and then the method for connecting the stranded wire 3 to the stranded wire connecting portion 21 is described. However, the order of connecting the flexible flat cable 2 and the stranded wire 3 is not particularly limited.
　続いて、本実施形態の接続端子１２ｚの製造方法について説明する。 Subsequently, a method for manufacturing the connection terminal 12z of the present embodiment will be described.
　本実施形態の接続端子１２ｚは、一枚の板材を打ち抜いて図１７のような中間体３０を形成した後、当該中間体３０を適宜折り曲げ加工等することにより形成されている。 The connection terminal 12z of the present embodiment is formed by punching a single plate material to form the intermediate body 30 as shown in FIG. 17, and then bending the intermediate body 30 as appropriate.
　図１７の中間体３０において、フレキシブルフラットケーブル接続部２０ｘに相当する部分は、複数のピアス２３を有している。中間体３０において、ピアス２３は、その先端が、幅方向に向けて突出するように形成されている。なお、ここで「幅方向」とは、板状の中間体３０が構成する平面内において、接続端子１２ｚの長手方向とは直交する方向を指すものとする。 In the intermediate body 30 in FIG. 17, a portion corresponding to the flexible flat cable connection portion 20 x has a plurality of piercings 23. In the intermediate body 30, the pierce 23 is formed so that the tip thereof protrudes in the width direction. Here, the “width direction” refers to a direction orthogonal to the longitudinal direction of the connection terminal 12 z in the plane formed by the plate-like intermediate body 30.
　図１７の中間体３０からフレキシブルフラットケーブル接続部２０ｘを成形する際には、ピアス２３の先端が、前述の「突出方向」を向くように、当該ピアス２３の根元部分を折り曲げる。これにより、突出方向に向けて突出する複数のピアス２３を有するフレキシブルフラットケーブル接続部２０ｘが成形される（図１８）。 17 When the flexible flat cable connecting portion 20x is formed from the intermediate body 30 in FIG. 17, the root portion of the pierce 23 is bent so that the tip of the pierce 23 faces the above-described “projection direction”. Thereby, the flexible flat cable connection part 20x which has several piercings 23 which protrude toward a protrusion direction is shape | molded (FIG. 18).
　図１７の中間体３０において、撚線接続部２１に相当する部分は、その一部が幅方向に向けて突出する第１突出部３１として構成されている。 In the intermediate body 30 in FIG. 17, a portion corresponding to the stranded wire connection portion 21 is configured as a first protruding portion 31 that partially protrudes in the width direction.
　この第１突出部３１から撚線接続部２１を成形する方法は、第１実施形態（図２、図７、図８等）で説明した方法と同様であるが、以下、簡単に説明する。最初に、図１７に示す第１突出部３１を円筒状に曲げて、当該第１突出部３１の突出方向での両端面同士を突き合わせるとともに、突き合わせた端面同士の間（継ぎ目）を溶接する。これにより、図１４に示すような直線状の第１溶接部３３が形成される。次に、略円筒状に構成された撚線接続部２１の、軸方向一側の端部（本実施形態では、フレキシブルフラットケーブル接続部２０ｘ側の端部）を圧縮して潰し、当該潰した箇所に溶接を行うことで、図１４に示す閉鎖部２４を形成する。以上により、一側の端部が閉じられた略円筒状の撚線接続部２１が完成する。 The method of forming the stranded wire connection portion 21 from the first protrusion 31 is the same as the method described in the first embodiment (FIGS. 2, 7, 8, etc.), but will be briefly described below. First, the first projecting portion 31 shown in FIG. 17 is bent into a cylindrical shape, but both end surfaces in the projecting direction of the first projecting portion 31 are butted together, and a space between the butted end surfaces (seam) is welded. . Thereby, the linear 1st welding part 33 as shown in FIG. 14 is formed. Next, the end of one side in the axial direction (in this embodiment, the end on the side of the flexible flat cable connection 20x) of the twisted wire connection portion 21 configured in a substantially cylindrical shape is compressed and crushed. The closure part 24 shown in FIG. 14 is formed by welding to a location. As described above, the substantially cylindrical stranded wire connecting portion 21 whose one end is closed is completed.
　図１７の中間体３０において、中間部２２に相当する部分は、その一部が幅方向に向けて突出する第２突出部３２として構成されている。なお、本実施形態において、第２突出部３２は、矩形状に突出するように形成されている。 In the intermediate body 30 in FIG. 17, the portion corresponding to the intermediate portion 22 is configured as a second protruding portion 32 that partially protrudes in the width direction. In the present embodiment, the second projecting portion 32 is formed so as to project in a rectangular shape.
　図１７の中間体３０から中間部２２を成形する際には、第２突出部３２を折り曲げて、当該第２突出部３２の突出方向での両端面同士を突き合わせることにより、中間部２２を略角筒状に構成する（図１８の状態）。 When the intermediate portion 22 is formed from the intermediate body 30 in FIG. 17, the second protrusion 32 is bent, and both end surfaces in the protrusion direction of the second protrusion 32 are abutted to each other, thereby forming the intermediate portion 22. It is configured in a substantially rectangular tube shape (state shown in FIG. 18).
　この状態で、第２突出部３２の端面同士の間に隙間が存在している。この隙間の部分は、中間部２２の周面の「継ぎ目」と言うことができる。本実施形態では、前記第２突出部３２の端面同士を溶接することにより（「継ぎ目」の部分を溶接することにより）、第２溶接部３４を形成している（図１４）。 In this state, there is a gap between the end surfaces of the second projecting portion 32. This gap portion can be said to be a “seam” on the peripheral surface of the intermediate portion 22. In this embodiment, the 2nd welding part 34 is formed by welding the end surfaces of the said 2nd protrusion part 32 (by welding the "seam" part) (FIG. 14).
　第２溶接部３４の溶接を行う方法は任意であるが、第１溶接部３３と同様にファイバーレーザで溶接を行うことができる。なお、本実施形態では、第２突出部３２の両端面同士を突き合わせた状態（図１８）において、中間部２２の「継ぎ目」が略直線状となるようにしている。これにより、第２溶接部３４を直線状に形成できるので、溶接を行い易い。 The method of welding the second welded portion 34 is arbitrary, but welding can be performed with a fiber laser in the same manner as the first welded portion 33. In the present embodiment, the “seam” of the intermediate portion 22 is substantially linear in a state where both end surfaces of the second projecting portion 32 are abutted with each other (FIG. 18). Thereby, since the 2nd welding part 34 can be formed in linear form, it is easy to weld.
　上記のように第２溶接部３４を形成すれば、角筒状の中間部２２の継ぎ目の隙間を塞ぐことができるので、当該角筒状の構造をより強固なものとできる。これにより、当該中間部２２の剛性を向上させることができるので、接続端子１２ｚ全体の強度を向上させることができる。 If the second welded portion 34 is formed as described above, the gap between the joints of the rectangular tube-shaped intermediate portion 22 can be closed, so that the rectangular tube-shaped structure can be made stronger. Thereby, since the rigidity of the said intermediate part 22 can be improved, the intensity | strength of the whole connecting terminal 12z can be improved.
　以上のようにして、図１７の中間体３０から、本実施形態の接続端子１２ｚ（図１４）を成形することができる。 As described above, the connection terminal 12z (FIG. 14) of the present embodiment can be formed from the intermediate body 30 of FIG.
　なお、中間体３０から接続端子１２ｚを成形する際に、ピアス２３、第１突出部３１、及び第２突出部３２を折り曲げる順番は任意であり、特に限定されない。また、プレスの曲げ型などによって、これらを同時に折り曲げることもできる。 In addition, when shape | molding the connection terminal 12z from the intermediate body 30, the order which bends the piercing | piercing 23, the 1st protrusion part 31, and the 2nd protrusion part 32 is arbitrary, and is not specifically limited. They can also be bent simultaneously by a press bending die or the like.
　同様に、第１溶接部３３、閉鎖部２４、及び第２溶接部３４の溶接を行う順番は任意であり、特に限定されない。しかしながら、溶接を行う順番を工夫すれば、当該溶接作業の効率を向上させることができる。例えば本実施形態では、第１溶接部３３を形成する際に、第２溶接部３４も形成するようにしている。 Similarly, the order in which the first welded portion 33, the closed portion 24, and the second welded portion 34 are welded is arbitrary and is not particularly limited. However, if the welding order is devised, the efficiency of the welding operation can be improved. For example, in this embodiment, when forming the 1st welding part 33, the 2nd welding part 34 is also formed.
　具体的には以下のとおりである。即ち、本実施形態では、中間体３０の第１突出部３１及び第２突出部３２を折り曲げた状態（図１８の状態）において、撚線接続部２１の周面の「継ぎ目」と、中間部２２の周面の「継ぎ目」が、一直線上に存在するように構成されている。このように、溶接を行うべき２箇所の「継ぎ目」が同一直線上に存在するように構成することで、ファイバーレーザ溶接の場合でも、焦点の再調整を行わずに２箇所の「継ぎ目」を溶接できる。 Specifically, it is as follows. That is, in the present embodiment, in a state where the first protrusion 31 and the second protrusion 32 of the intermediate body 30 are bent (state in FIG. 18), the “seam” on the peripheral surface of the stranded wire connection portion 21 and the intermediate portion The “seam” of the circumferential surface of 22 is configured to exist on a straight line. In this way, by configuring the two “seams” to be welded to be on the same straight line, even in the case of fiber laser welding, the two “seams” can be formed without performing readjustment of the focus. Can be welded.
　そこで本実施形態では、中間体３０の第１突出部３１及び第２突出部３２を折り曲げた状態（図１８の状態）で第１溶接部３３を形成する際に、当該第１溶接部３３の長手方向の先まで一直線に溶接を行って、このときに第２溶接部３４も形成する。これによれば、一回の溶接で第１溶接部３３と第２溶接部３４を形成できるので、溶接を効率的に行うことができる。 Therefore, in the present embodiment, when the first welded portion 33 is formed in a state where the first projecting portion 31 and the second projecting portion 32 of the intermediate body 30 are bent (the state shown in FIG. 18), Welding is performed in a straight line to the tip in the longitudinal direction, and at this time, the second welded portion 34 is also formed. According to this, since the 1st welding part 33 and the 2nd welding part 34 can be formed by one-time welding, welding can be performed efficiently.
　そして、上記のようにして第１溶接部３３及び第２溶接部３４を形成した後で、撚線接続部２１の一側の端部を潰して、当該潰した部分を溶接し、閉鎖部２４を形成する。なお、本実施形態の接続端子１２ｚ（図１４）は上記のように製造されるので、所定の方向から見たときに（具体的には、ピアス２３の突出方向から見たときに）、第１溶接部３３と第２溶接部３４が同一直線上に存在する構成となっている。 And after forming the 1st welding part 33 and the 2nd welding part 34 as mentioned above, the edge part of the one side of the twisted wire connection part 21 is crushed, the said crushed part is welded, and the closure part 24 Form. In addition, since the connection terminal 12z (FIG. 14) of this embodiment is manufactured as described above, when viewed from a predetermined direction (specifically, when viewed from the protruding direction of the pierce 23), The first welded portion 33 and the second welded portion 34 are configured to exist on the same straight line.
　以上で説明したように、本実施形態の接続端子１２ｚは、フレキシブルフラットケーブル接続部２０ｘと、撚線接続部２１と、を一体的に備えている。フレキシブルフラットケーブル接続部２０ｘは、フレキシブルフラットケーブル２を厚み方向に貫通することが可能なピアス２３を備えている。撚線接続部２１は、撚線３の先端の導体５及び絶縁被覆６を挿入可能な筒状に形成され、かつ当該筒の軸方向一端側が閉じた形状である。 As described above, the connection terminal 12z of the present embodiment integrally includes the flexible flat cable connection portion 20x and the stranded wire connection portion 21. The flexible flat cable connecting portion 20x includes a pierce 23 that can penetrate the flexible flat cable 2 in the thickness direction. The stranded wire connecting portion 21 is formed in a cylindrical shape into which the conductor 5 and the insulating coating 6 at the tip of the stranded wire 3 can be inserted, and the one end side in the axial direction of the cylinder is closed.
　撚線接続部２１を、一端が閉じた筒状に形成することにより、当該撚線接続部２１の密閉性を高めることができる。これにより、撚線接続部２１の内部に水分が侵入することを防止できる。従って、撚線３の導体５がアルミである本実施形態の場合でも、電食の発生を防止できる。 By forming the stranded wire connection portion 21 into a cylindrical shape with one end closed, the hermeticity of the stranded wire connection portion 21 can be improved. Thereby, it is possible to prevent moisture from entering the stranded wire connection portion 21. Therefore, even in the case of this embodiment in which the conductor 5 of the stranded wire 3 is aluminum, the occurrence of electrolytic corrosion can be prevented.
　また上記のように、本実施形態の接続端子１２ｚにおいては、フレキシブルフラットケーブル接続部２０ｘと撚線接続部２１のあいだの中間部２２が略筒状に形成されている。 Also, as described above, in the connection terminal 12z of the present embodiment, the intermediate portion 22 between the flexible flat cable connection portion 20x and the stranded wire connection portion 21 is formed in a substantially cylindrical shape.
　このように、中間部２２を略筒状に形成することで、接続端子１２ｚ全体の剛性が向上する。 Thus, the rigidity of the entire connection terminal 12z is improved by forming the intermediate portion 22 in a substantially cylindrical shape.
　また上記のように、本実施形態の接続端子１２ｚは、以下のように構成されている。即ち、撚線接続部２１は、第１突出部３１が曲げられて、その両端同士が突き合わせられ、かつ前記両端同士が直線状に溶接されることで筒状に形成されている。中間部２２も同様に、第２突出部３２が曲げられて、その両端同士が突き合わせられ、かつ前記両端同士が溶接されることで筒状に形成されている。そして、所定の方向から見たときに、撚線接続部２１の直線状の溶接部分と、中間部２２の直線状の溶接部分とが、略同一直線上にある。 As described above, the connection terminal 12z of the present embodiment is configured as follows. That is, the stranded wire connecting portion 21 is formed in a cylindrical shape by bending the first projecting portion 31, butting both ends thereof and welding the both ends linearly. Similarly, the intermediate portion 22 is formed in a cylindrical shape by bending the second projecting portion 32, butting both ends thereof and welding the both ends. And when it sees from a predetermined | prescribed direction, the linear welding part of the twisted wire connection part 21 and the linear welding part of the intermediate part 22 exist on a substantially identical straight line.
　上記のように、撚線接続部２１を形成する際に、曲げた第１突出部３１の両端同士を溶接することで、継ぎ目の無い筒状に形成できる。これにより、撚線接続部２１の防水性が更に向上する。また、中間部２２を形成する際にも溶接して筒状にすることで、当該中間部２２の強度を向上させることができる。そして、上記のように撚線接続部２１と中間部２２の溶接部分を略同一直線上に配置することで、一度の溶接作業で撚線接続部２１と中間部２２の両方を溶接できる。これにより、溶接作業を簡略化できる。 As described above, when forming the stranded wire connecting portion 21, both ends of the bent first projecting portion 31 can be welded to each other so as to form a seamless cylindrical shape. Thereby, the waterproofness of the twisted wire connection part 21 further improves. In addition, when the intermediate portion 22 is formed, the strength of the intermediate portion 22 can be improved by welding and forming a cylindrical shape. And by arranging the welding part of the twisted wire connection part 21 and the intermediate part 22 on the substantially same straight line as mentioned above, both the twisted wire connection part 21 and the intermediate part 22 can be welded by one welding operation. Thereby, welding work can be simplified.
　また上記のように、本実施形態の電線アッセンブリ１は、上記の接続端子１２ｚと、接続端子１２ｚのフレキシブルフラットケーブル接続部２０ｘに接続されたフレキシブルフラットケーブル２と、接続端子１２ｚの撚線接続部２１に接続された撚線３と、を備えている。撚線３の先端は、絶縁被覆６の一部を除去して導体５を露出させた状態で撚線接続部２１に挿入され、撚線接続部２１が前記導体５及び絶縁被覆６に圧着されている。 Further, as described above, the wire assembly 1 of the present embodiment includes the connection terminal 12z, the flexible flat cable 2 connected to the flexible flat cable connection portion 20x of the connection terminal 12z, and the stranded wire connection portion of the connection terminal 12z. And a twisted wire 3 connected to 21. The tip of the stranded wire 3 is inserted into the stranded wire connecting portion 21 with a part of the insulating coating 6 removed to expose the conductor 5, and the stranded wire connecting portion 21 is crimped to the conductor 5 and the insulating coating 6. ing.
　このように、撚線接続部２１を撚線３に圧着することにより、撚線接続部２１を密閉することができるので、当該撚線接続部２１の内部に水分が侵入することを防止できる。 Since the stranded wire connecting portion 21 can be sealed by crimping the stranded wire connecting portion 21 to the stranded wire 3 in this way, it is possible to prevent moisture from entering the stranded wire connecting portion 21.
　また上記のように、本実施形態の電線アッセンブリ１において、フレキシブルフラットケーブルのフラット導体７は銅、撚線３の導体５はアルミ、接続端子１２ｚは銅系合金（黄銅）である。 As described above, in the electric wire assembly 1 of the present embodiment, the flat conductor 7 of the flexible flat cable is copper, the conductor 5 of the stranded wire 3 is aluminum, and the connection terminal 12z is a copper-based alloy (brass).
　即ち、本実施形態の接続端子１２ｚは撚線接続部２１の防水性に優れるので、撚線３の導体５がアルミの場合でも電食の発生を防止できる。なお上記実施形態では、フラット導体７と接続端子１２ｚは同種の金属であり、両者のあいだに電食が生じる心配はないので、この点ではフレキシブルフラットケーブル接続部２０ｘに防水性は要求されない。 That is, since the connection terminal 12z of this embodiment is excellent in the waterproof property of the stranded wire connection part 21, even when the conductor 5 of the stranded wire 3 is aluminum, the occurrence of electrolytic corrosion can be prevented. In the above-described embodiment, the flat conductor 7 and the connection terminal 12z are the same type of metal, and there is no concern that electric corrosion will occur between the two. Therefore, the waterproof property is not required for the flexible flat cable connection portion 20x in this respect.
　以上に本発明の第２施形態を説明したが、上記の構成は例えば以下のように変更することができる。 Although the second embodiment of the present invention has been described above, the above configuration can be modified as follows, for example.
　上記実施形態では、中間部２２の「継ぎ目」を溶接して第２溶接部３４を形成するものとしたが、必ずしもこれに限らない。中間部２２は特に防水性を要求されないので、当該中間部２２の継ぎ目に隙間が存在していても、防水性の点では問題ない。従って、第２溶接部３４を形成しなくても（中間部２２の継ぎ目が溶接されていなくても）良い。 In the above embodiment, the “weld” of the intermediate portion 22 is welded to form the second welded portion 34, but the present invention is not necessarily limited thereto. Since the intermediate part 22 is not particularly required to be waterproof, even if a gap exists at the joint of the intermediate part 22, there is no problem in terms of waterproofness. Therefore, the second weld 34 may not be formed (the seam of the intermediate part 22 may not be welded).
　また、中間部２２を筒状に形成する構成は省略しても良い。 Further, the configuration in which the intermediate portion 22 is formed in a cylindrical shape may be omitted.
　上記実施形態において、撚線接続部２１は、曲げた第１突出部３１の端部同士を突き合わせて筒状にしているが、これに限らず、第１突出部３１の端部同士を厚み方向で重ね合わせても良い。この場合、当該重ね合わせた部分を溶接して第１溶接部３３を形成する。また、上記実施形態において、中間部２２は、曲げた第２突出部３２の端部同士を突き合わせて筒状にしているが、これに限らず、第２突出部３２の端部同士を厚み方向で重ね合わせても良い。この場合、当該重ね合わせた部分を溶接して第２溶接部３４を形成する。 In the said embodiment, although the twisted wire connection part 21 face | matched the edge parts of the 1st protrusion part 31 bent, it is not only this but the edge parts of the 1st protrusion part 31 are thickness directions. You may superimpose. In this case, the first welded portion 33 is formed by welding the overlapped portions. Moreover, in the said embodiment, although the intermediate part 22 face | matched the edge parts of the 2nd protrusion part 32 bent, it is not limited to this but the edge parts of the 2nd protrusion part 32 are thickness directions. You may superimpose. In this case, the overlapped portion is welded to form the second welded portion 34.
　外側ケース５１及び内側ケース５２の形状等は適宜変更できる。もっとも、外側ケース５１及び内側ケース５２は、本願発明の実施に必須の構成ではなく、省略することもできる。 The shape of the outer case 51 and the inner case 52 can be changed as appropriate. However, the outer case 51 and the inner case 52 are not essential components for carrying out the present invention, and can be omitted.
　上記実施形態では、フレキシブルフラットケーブル接続部２０ｘと撚線接続部２１を、一枚の板材から一体形成している。しかしこれに限らず、例えば、フレキシブルフラットケーブル接続部２０ｘと撚線接続部２１とを別々の部材から構成し、後から溶接などで連結することにより、フレキシブルフラットケーブル接続部２０ｘと撚線接続部２１を一体化しても良い。 In the above embodiment, the flexible flat cable connecting portion 20x and the stranded wire connecting portion 21 are integrally formed from a single plate material. However, the present invention is not limited to this. For example, the flexible flat cable connection portion 20x and the stranded wire connection portion 21 are formed of separate members and connected later by welding or the like, whereby the flexible flat cable connection portion 20x and the stranded wire connection portion. 21 may be integrated.
　また、上記の２つの実施形態や変形例で示した接続端子１２，１２ｘ，１２ｙ，１２ｚの形状等は一例であって、当該形状は適宜変更することができる。 Further, the shapes of the connection terminals 12, 12x, 12y, and 12z shown in the above two embodiments and modifications are examples, and the shapes can be changed as appropriate.
　１　電線アッセンブリ
　２　フレキシブルフラットケーブル
　３　撚線（丸線）
　１２，１２ｘ，１２ｙ，１２ｚ　接続端子
　２０，２０ｘ　フレキシブルフラットケーブル接続部
　２１　撚線接続部（丸線接続部）
　２２　中間部
　２３　ピアス
　４１　撚線接続部（丸線接続部） 1 Electric wire assembly 2 Flexible flat cable 3 Twisted wire (round wire)
12, 12x, 12y, 12z Connection terminal 20, 20x Flexible flat cable connection part 21 Twisted wire connection part (round wire connection part)
22 Middle part 23 Pierce 41 Twisted wire connection part (Round wire connection part)

Claims (10)

  1. 　フレキシブルフラットケーブルと丸線を接続する接続端子であって、
    　略平板状のフレキシブルフラットケーブル接続部と、
    　前記丸線の先端の導体及び絶縁被覆を挿入可能な筒状に形成され、かつ当該筒の軸方向一端側が閉じた形状の丸線接続部と、
    を一体的に備えることを特徴とする接続端子。     A connection terminal for connecting a flexible flat cable and a round wire,
    A substantially flat flexible flat cable connection;
    A round wire connecting portion formed in a cylindrical shape into which the conductor and insulating coating at the tip of the round wire can be inserted, and having one end in the axial direction of the cylinder closed;
    A connection terminal comprising:
  2. 　フレキシブルフラットケーブルと丸線を接続する接続端子であって、
    　略平板状のフレキシブルフラットケーブル接続部と、
    　オープンバレル式の丸線接続部と、
    を一体的に備えることを特徴とする接続端子。     A connection terminal for connecting a flexible flat cable and a round wire,
    A substantially flat flexible flat cable connection;
    Open barrel type round wire connection,
    A connection terminal comprising:
  3. 　請求項１又は２に記載の接続端子であって、
    　前記フレキシブルフラットケーブル接続部の厚み方向の寸法は、前記丸線接続部に挿入される前記丸線の導体の径方向の寸法よりも小さいことを特徴とする接続端子。     The connection terminal according to claim 1 or 2,
    The connecting terminal according to claim 1, wherein a dimension in a thickness direction of the flexible flat cable connecting portion is smaller than a dimension in a radial direction of a conductor of the round wire inserted into the round wire connecting portion.
  4. 　フレキシブルフラットケーブルと丸線を接続する接続端子であって、
    　前記フレキシブルフラットケーブルを厚み方向に貫通することが可能なピアスを備えるフレキシブルフラットケーブル接続部と、
    　前記丸線の先端の導体及び絶縁被覆を挿入可能な筒状に形成され、かつ当該筒の軸方向一端側が閉じた形状の丸線接続部と、
    を一体的に備えることを特徴とする接続端子。     A connection terminal for connecting a flexible flat cable and a round wire,
    A flexible flat cable connecting portion including a piercing capable of penetrating the flexible flat cable in the thickness direction;
    A round wire connecting portion formed in a cylindrical shape into which the conductor and insulating coating at the tip of the round wire can be inserted, and having one end in the axial direction of the cylinder closed;
    A connection terminal comprising:
  5. 　請求項１、２、又は４に記載の接続端子であって、
    　前記フレキシブルフラットケーブル接続部と前記丸線接続部のあいだの中間部が略筒状に形成されていることを特徴とする接続端子。     The connection terminal according to claim 1, 2, or 4,
    A connecting terminal, wherein an intermediate portion between the flexible flat cable connecting portion and the round wire connecting portion is formed in a substantially cylindrical shape.
  6. 　請求項１又は４に記載の接続端子であって、
    　前記フレキシブルフラットケーブル接続部と前記丸線接続部のあいだの中間部が略筒状に形成されており、
    　前記丸線接続部は、板材が曲げられて、その両端同士が突き合わせられ、又は当該両端が重ね合わせられて、かつ前記両端同士が直線状に溶接されることで筒状に形成されており、
    　前記中間部は、板材が曲げられて、その両端同士が突き合わせられ、又は当該両端が重ね合わせられて、かつ前記両端同士が直線状に溶接されることで筒状に形成されており、
    　所定の方向から見たときに、前記丸線接続部の直線状の溶接部分と、前記中間部の前記直線状の溶接部分とが、同一直線上にあることを特徴とする接続端子。     The connection terminal according to claim 1 or 4,
    The intermediate part between the flexible flat cable connection part and the round wire connection part is formed in a substantially cylindrical shape,
    The round wire connecting portion is formed in a cylindrical shape by bending a plate material, but the ends of each are abutted, or the ends are overlapped, and the ends are welded linearly,
    The intermediate portion is formed into a cylindrical shape by bending the plate material, but the ends of each are abutted, or the ends are overlapped, and the ends are welded linearly,
    The connection terminal, wherein when viewed from a predetermined direction, the linear weld portion of the round wire connection portion and the linear weld portion of the intermediate portion are on the same straight line.
  7. 　請求項１に記載の接続端子と、
    　前記接続端子の前記フレキシブルフラットケーブル接続部に接続されたフレキシブルフラットケーブルと、
    　前記接続端子の前記丸線接続部に接続された丸線と、
    を備え、
    　前記フレキシブルフラットケーブルの導体が、前記フレキシブルフラットケーブル接続部に溶接されており、
    　前記丸線の先端は、絶縁被覆の一部を除去して導体を露出させた状態で前記丸線接続部に挿入され、当該丸線接続部が前記導体及び絶縁被覆に圧着されていることを特徴とする電線アッセンブリ。     The connection terminal according to claim 1;
    A flexible flat cable connected to the flexible flat cable connecting portion of the connection terminal;
    A round wire connected to the round wire connection portion of the connection terminal;
    With
    The conductor of the flexible flat cable is welded to the flexible flat cable connecting portion,
    The tip of the round wire is inserted into the round wire connecting portion in a state where a part of the insulating coating is removed and the conductor is exposed, and the round wire connecting portion is crimped to the conductor and the insulating coating. Characteristic wire assembly.
  8. 　請求項２に記載の接続端子と、
    　前記接続端子の前記フレキシブルフラットケーブル接続部に接続されたフレキシブルフラットケーブルと、
    　前記接続端子の前記丸線接続部に接続された丸線と、
    を備え、
    　前記フレキシブルフラットケーブルの導体が、前記フレキシブルフラットケーブル接続部に溶接されており、
    　前記丸線の先端は、絶縁被覆の一部を除去して導体を露出させた状態で、前記導体及び絶縁被覆が前記丸線接続部に圧着されていることを特徴とする電線アッセンブリ。     The connection terminal according to claim 2;
    A flexible flat cable connected to the flexible flat cable connecting portion of the connection terminal;
    A round wire connected to the round wire connection portion of the connection terminal;
    With
    The conductor of the flexible flat cable is welded to the flexible flat cable connecting portion,
    The wire assembly is characterized in that at the tip of the round wire, the conductor and the insulation coating are pressure-bonded to the round wire connection portion in a state where a part of the insulation coating is removed and the conductor is exposed.
  9. 　請求項４に記載の接続端子と、
    　前記接続端子の前記フレキシブルフラットケーブル接続部に接続されたフレキシブルフラットケーブルと、
    　前記接続端子の前記丸線接続部に接続された丸線と、
    を備え、
    　前記フレキシブルフラットケーブルの導体が、前記フレキシブルフラットケーブル接続部の前記ピアスによって貫通されており、
    　前記丸線の先端は、絶縁被覆の一部を除去して導体を露出させた状態で、前記導体及び絶縁被覆が前記丸線接続部に圧着されていることを特徴とする電線アッセンブリ。     Connection terminal according to claim 4,
    A flexible flat cable connected to the flexible flat cable connecting portion of the connection terminal;
    A round wire connected to the round wire connection portion of the connection terminal;
    With
    A conductor of the flexible flat cable is penetrated by the piercing of the flexible flat cable connecting portion;
    The wire assembly is characterized in that at the tip of the round wire, the conductor and the insulation coating are pressure-bonded to the round wire connection portion in a state where a part of the insulation coating is removed and the conductor is exposed.
  10. 　請求項７から９までの何れか一項に記載の電線アッセンブリであって、
    　前記フレキシブルフラットケーブルの導体は、銅又は銅系合金からなり、
    　前記丸線の導体は、アルミ又はアルミ系合金からなり、
    　前記接続端子は、銅又は銅系合金からなることを特徴とする電線アッセンブリ。     An electric wire assembly according to any one of claims 7 to 9,
    The conductor of the flexible flat cable is made of copper or a copper-based alloy,
    The round wire conductor is made of aluminum or an aluminum alloy,
    The electric wire assembly, wherein the connection terminal is made of copper or a copper-based alloy.
PCT/JP2014/005582 2013-11-06 2014-11-06 Connecting terminal and electric wiring assembly WO2015068392A1 (en)

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