WO2015068392A1 - 接続端子及び電線アッセンブリ - Google Patents
接続端子及び電線アッセンブリ Download PDFInfo
- 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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- Prior art keywords
- flat cable
- flexible flat
- conductor
- connection terminal
- connecting portion
- Prior art date
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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
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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
- 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
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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
- 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
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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
- H01R4/02—Soldered or welded connections
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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
- H01R4/58—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)
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- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Multi-Conductor Connections (AREA)
Abstract
Description
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)
Claims (10)
- 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。 - 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。
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CN201480059746.8A CN105684222B (zh) | 2013-11-06 | 2014-11-06 | 接线端子及电线组件 |
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WO2022202183A1 (ja) * | 2021-03-23 | 2022-09-29 | 古河電気工業株式会社 | ジョイントコネクタ、コネクタ付電線及びコネクタケース |
WO2024149194A1 (zh) * | 2023-01-09 | 2024-07-18 | 长春捷翼汽车科技股份有限公司 | 一种电连接结构 |
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CN105684222B (zh) | 2019-07-09 |
JPWO2015068392A1 (ja) | 2017-03-09 |
KR102172080B1 (ko) | 2020-10-30 |
KR20160078369A (ko) | 2016-07-04 |
CN105684222A (zh) | 2016-06-15 |
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