WO2015123863A1 - Élément de câblage et son procédé de fabrication - Google Patents

Élément de câblage et son procédé de fabrication Download PDF

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Publication number
WO2015123863A1
WO2015123863A1 PCT/CN2014/072381 CN2014072381W WO2015123863A1 WO 2015123863 A1 WO2015123863 A1 WO 2015123863A1 CN 2014072381 W CN2014072381 W CN 2014072381W WO 2015123863 A1 WO2015123863 A1 WO 2015123863A1
Authority
WO
WIPO (PCT)
Prior art keywords
coaxial cables
plural
connection board
conductor
conductors
Prior art date
Application number
PCT/CN2014/072381
Other languages
English (en)
Inventor
Nobuyuki Yamazaki
Hiroyuki Semba
Takayoshi Koinuma
Original Assignee
Sumitomo Electric Industries, Ltd.
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 Sumitomo Electric Industries, Ltd. filed Critical Sumitomo Electric Industries, Ltd.
Priority to PCT/CN2014/072381 priority Critical patent/WO2015123863A1/fr
Priority to CN201480075872.2A priority patent/CN106030911A/zh
Priority to JP2016570150A priority patent/JP2017512373A/ja
Publication of WO2015123863A1 publication Critical patent/WO2015123863A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/28—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for wire processing before connecting to contact members, not provided for in groups H01R43/02 - H01R43/26
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0016—Brazing of electronic components
    • 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
    • H01R12/594—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures for shielded flat cable
    • H01R12/598—Each conductor being individually surrounded by shield, e.g. multiple coaxial cables in flat structure
    • 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
    • H01R4/023—Soldered or welded connections between cables or wires and 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
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/02—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections
    • H01R43/0256—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for soldered or welded connections for soldering or welding connectors to a printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
    • H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
    • H01R9/0515—Connection to a rigid planar substrate, e.g. printed circuit board
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
    • H05K3/305—Affixing by adhesive
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3405—Edge mounted components, e.g. terminals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • B23K2101/38—Conductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/117—Pads along the edge of rigid circuit boards, e.g. for pluggable connectors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/09—Shape and layout
    • H05K2201/09209—Shape and layout details of conductors
    • H05K2201/09372—Pads and lands
    • H05K2201/09409—Multiple rows of pads, lands, terminals or dummy patterns; Multiple rows of mounted components
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10356—Cables
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/28—Applying non-metallic protective coatings
    • H05K3/281—Applying non-metallic protective coatings by means of a preformed insulating foil
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/3457—Solder materials or compositions; Methods of application thereof
    • H05K3/3463—Solder compositions in relation to features of the printed circuit board or the mounting process
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a wiring member having a coaxial flat cable and a manufacturing method thereof.
  • Coaxial cable harnesses having plural coaxial cables are known as cables for connection between apparatus or inside an apparatus (refer to Patent document 1).
  • the coaxial cable harness of Patent document 1 plural coaxial cables are bundled together at a middle position.
  • the coaxial cable harness whose coaxial cables are bundled together at the middle position does not satisfy a demand that the harness should be thin and flat in its entirety.
  • the inner insulator which insulates the center conductor and the outer conductor of each coaxial cable from each other may be damaged by heat.
  • the use of the ground bar formed with grooves as in the technique of Patent document 2 makes it possible to arrange the coaxial cables parallel with each other at regular intervals. Furthermore, the use of the ground bar makes it possible to suppress damaging of the inner insulators due to heat because the ground bar protects them from heat that is produced during soldering of the outer conductors.
  • ground bar results in increase in the number of parts and complication of the structure. Furthermore, the number of steps of an assembling process is increased, resulting in cost increase.
  • An object of the present invention is to provide a wiring member and a manufacturing method thereof which enable cost reduction while preventing pitch deviation of the coaxial cables and damaging of the inner insulators.
  • a wiring member includes: a coaxial flat cable including:
  • plural coaxial cables each having a center conductor, an inner insulator formed on an outer circumferential surface of the center conductor, an outer conductor formed on an outer circumferential surface of the inner insulator, and an outer sheath formed on an outer circumferential surface of the outer conductor;
  • connection board connected to at least one end portion, in its longitudinal direction, of the coaxial flat cable, wherein:
  • connection board includes signal terminal members to which the center conductors of the plural coaxial cables are soldered, respectively, and a ground portion to which the outer conductors of the plural coaxial cables are soldered directly with low-melting-temperature solder.
  • a wiring member according to another aspect of the invention includes:
  • a coaxial flat cable including:
  • plural coaxial cables each having a center conductor, an inner insulator formed on an outer circumferential surface of the center conductor, an outer conductor formed on an outer circumferential surface of the inner insulator, and an outer sheath formed on an outer circumferential surface of the outer conductor;
  • connection board connected to at least one end portion, in its longitudinal direction, of the coaxial flat cable, wherein:
  • connection board includes signal terminal members to which the center conductors of the plural coaxial cables are soldered, respectively, and a ground portion to which the outer conductors of the plural coaxial cables are soldered directly with low-melting-temperature solder having a melting temperature of 120°C to 180°C so as to be connected to each other in an arrangement direction of the plural coaxial cables; in the coaxial flat cable the resin films are bonded to the outer sheaths of the plural coaxial cables over the entire length of their extension, excepting the center conductor, the inner insulator and the outer conductor;
  • connection board an end portion of one of the resin films are bonded and fixed to the connection board.
  • a manufacturing method of a wiring board according to another aspect of the invention includes:
  • connection board a positioning step of disposing the plural coaxial cables and the connection board so that the center conductors are placed on or over respective signal terminal members of the connection board and that the outer conductors are placed on or over a ground portion of the connection board;
  • soldering step of soldering the center conductors to the respective signal terminal members and soldering the outer conductors to the ground portion directly with low-melting-temperature solder.
  • the invention makes it possible to provide a wiring member and a manufacturing method thereof which enable cost reduction while preventing pitch deviation of the coaxial cables and damaging of the inner insulators.
  • FIG. 1 A top view of a wiring member according to an embodiment of the present invention.
  • FIG. 2 A sectional view of a coaxial flat cable of the wiring member shown in Fig. 1.
  • FIG. 3 An enlarged top view of an end portion of the wiring member shown in Fig. 1.
  • FIG. 4 A side sectional view corresponding to Fig. 3.
  • FIG. 5 A schematic diagram showing the configuration of a laminating machine.
  • FIG. 6 A top view of coaxial flat cables in the process of manufacture.
  • FIG. 7 Views illustrating a manufacturing process of a wiring member, (a) to (d) of which are side sectional views of an end portion of a coaxial flat cable and a connection board.
  • FIG. 8 A side sectional view of a modification.
  • a wiring member according to one aspect of the invention includes:
  • a coaxial flat cable including:
  • plural coaxial cables each having a center conductor, an inner insulator formed on an outer circumferential surface of the center conductor, an outer conductor formed on an outer circumferential surface of the inner insulator, and an outer sheath formed on an outer circumferential surface of the outer conductor;
  • connection board connected to at least one end portion, in its longitudinal direction, of the coaxial flat cable, wherein:
  • connection board includes signal terminal members to which the center conductors of the plural coaxial cables are soldered, respectively, and a ground portion to which the outer conductors of the plural coaxial cables are soldered directly with low-melting-temperature solder.
  • the parallel arrangement of the coaxial cables is maintained by the resin film.
  • the coaxial cables can be connected to the connection board so as to be arranged accurately relative to the connection board without the need for using a ground bar that is formed with grooves.
  • the outer conductors are soldered to the ground portion directly with low-melting-temperature solder, the inner insulators can be prevented from being damaged due to heat that is produced during soldering even without using a ground bar. Since no ground bar is used, the number of parts and the number of steps of an assembling process can be reduced and hence cost reduction can be attained.
  • the low-melting-temperature solder may have a melting temperature of 120°C to 180°C.
  • the soldering temperature in connecting the outer conductors to the ground portion the soldering temperature can be set in the range of 120°C to 180°C, as a result of which the internal insulators can be prevented reliably from being damaged during soldering.
  • the resin film may be bonded to the outer sheaths of the coaxial cables over the entire length of their extension, excepting the center conductor, the inner insulator and the outer conductor.
  • the parallel arrangement of the coaxial cables can be maintained easily in their longitudinal direction by the resin film which is bonded to the outer sheaths of the coaxial cables over the entire length of their extension.
  • two resin films may be bonded to the plural coaxial cables from the two respective sides of the arrangement plane of the plural coaxial cables.
  • At least exposed portions of the outer conductors and further tip portions of the coaxial cables may be covered with a protective film.
  • connection board An end portion of the resin film may be bonded and fixed to the connection board. According to the configuration of item (6), the strength of connection between the coaxial flat cable and the connection board can be increased.
  • the outer conductors of the coaxial cables may be connected to each other by soldering in an arrangement direction of the coaxial cables.
  • the potentials of the outer conductors of the respective coaxial cables can be equalized and hence the electrical characteristics can be maintained easily.
  • a wiring member according to another aspect of the invention includes: a coaxial flat cable including:
  • plural coaxial cables each having a center conductor, an inner insulator formed on an outer circumferential surface of the center conductor, an outer conductor formed on an outer circumferential surface of the inner insulator, and an outer sheath formed on an outer circumferential surface of the outer conductor;
  • connection board connected to at least one end portion, in its longitudinal direction, of the coaxial flat cable, wherein:
  • connection board includes signal terminal members to which the center conductors of the plural coaxial cables are soldered, respectively, and a ground portion to which the outer conductors of the plural coaxial cables are soldered directly with low-melting-temperature solder having a melting temperature of 120°C to 180°C so as to be connected to each other in an arrangement direction of the plural coaxial cables; in the coaxial flat cable the resin films are bonded to the outer sheaths of the plural coaxial cables over the entire length of their extension, excepting the center conductor, the inner insulator and the outer conductor;
  • connection board an end portion of one of the resin films are bonded and fixed to the connection board.
  • the parallel arrangement of the coaxial cables is maintained reliably by the resin films which are bonded to the coaxial cables from the two respective sides of the arrangement plane of the coaxial cables over the entire length of extension of the outer sheaths.
  • the coaxial cables can be connected to the connection board so as to be arranged accurately relative to the connection board without the need for using a ground bar that is formed with grooves.
  • the outer conductors are soldered to the ground portion directly with low-melting-temperature solder having a melting temperature of 120°C to 180°C, the inner insulators can be prevented from being damaged due to heat that is produced during soldering even without using a ground bar. Since no ground bar is used, the number of parts and the number of steps of an assembling process can be reduced and hence cost reduction can be attained.
  • connection board since the end portion of the one resin film are bonded and fixed to the connection board, the strength of connection between the coaxial flat cable and the connection board can be increased.
  • a manufacturing method of a wiring board according to the invention includes:
  • connection board a positioning step of disposing the plural coaxial cables and the connection board so that the center conductors are placed on or over respective signal terminal members of the connection board and that the outer conductors are placed on or over a ground portion of the connection board;
  • soldering step of soldering the center conductors to the respective signal terminal members and soldering the outer conductors to the ground portion directly with low-melting-temperature solder.
  • the coaxial cables are connected to the connection board while their parallel arrangement is maintained by the resin film, the coaxial cables can be connected to the connection board so as to be arranged accurately relative to the connection board without the need for using a ground bar that is formed with grooves. Furthermore, since the outer conductors are soldered to the ground portion directly with low-melting-temperature solder, the inner insulators can be prevented from being damaged due to heat that is produced during soldering even without using a ground bar. Since no ground bar is used, the number of parts and the number of steps of an assembling process can be reduced and hence the wiring member can be manufactured at a low cost.
  • Low-melting-temperature solder may be applied to the ground portion in advance of the soldering step.
  • a wiring member 1 according to an embodiment of the invention is used for electrical connection of, for example, a board or a component.
  • the wiring member 1 is suitable for transmission of differential signals.
  • Fig. 1 is a top view of the wiring member 1 according to the embodiment of the invention. As shown in Fig. 1, the wiring member 1 is equipped with a coaxial flat cable 10 extending in the longitudinal direction and connection boards 20 which are disposed adjacent to the two respective ends, in the longitudinal direction, of the coaxial flat cable 10.
  • Fig. 2 is a sectional view of the coaxial flat cable 10 of the wiring member 1 shown in Fig. 1.
  • the coaxial flat cable 10 is equipped with plural coaxial cables 30 and resin films 41 which are applied to the coaxial cables 30.
  • Each coaxial cable 30 is a coaxial cable having an outer diameter 0.16 to 0.3 mm, for example.
  • Each coaxial cable 30 is equipped with a center conductor 31, an inner insulator 32, an outer conductor 33, and an outer sheath 34.
  • the inner insulator 32 is formed on the outer circumferential surface of the center conductor 31.
  • the outer conductor 33 is formed on the outer circumferential surface of the inner insulator 32.
  • the outer sheath 34 is formed on the outer circumferential surface of the outer conductor 33.
  • the center conductor 31 is, for example, a metal wire made of copper, and may be a wire of AWG (American Wire Gauge) #42 to 47.
  • Each of the inner insulator 32 and the outer sheath 34 is made of an insulative resin.
  • the inner insulator 32 is made of a resin whose melting temperature is about 300°C, such as PFA (tetrafluoroethylene-perfluoro alkylvinyl ether copolymer).
  • the plural coaxial cables 30 are arranged in a plane.
  • the manner of arrangement of the coaxial cables 30 is determined by a wiring design.
  • the coaxial cables 30 are arranged at a prescribed pitch.
  • the resin films 41 are bonded to the coaxial cables 30 from the both sides of their arrangement plane and thereby maintain the parallel arrangement of the coaxial cables 30.
  • each resin film 41 is a polyethylene terephthalate film having a thickness of several micrometers to several tens of micrometers (preferably, 8 to 20 ⁇ ).
  • the resin films 41 are bonded to the outer sheaths 34 of the coaxial cables 30 with adhesive.
  • only one resin film 41 may be bonded to the coaxial cables 30 from one side of their arrangement plane. In the embodiment, it is easy to firmly maintain the arrangement plane of the coaxial cables 30 because the resin films 41 are bonded to the coaxial cables 30 from the two sides of their parallel arrangement.
  • the resin films 41 are bonded to the outer sheaths 34 of the coaxial cables 30 over the entire length of their extension, excepting the center conductor 31, the inner insulator 32 and the outer conductor 33.
  • the parallel arrangement (planar arrangement) of the coaxial cables 30 can be maintained easily in their longitudinal direction because the resin films 41 are bonded to the coaxial cables 30 over the entire length of their extension.
  • Fig. 3 is an enlarged top view of an end portion of the wiring member 1 shown in Fig. 1. As shown in Fig. 3, a connection board 20 is connected to each end portion, in its longitudinal direction, of the coaxial flat cable 10.
  • every layers of the coaxial cables 30 are exposed in sequence. More specifically, a tip portion of the outer conductor 33 is exposed from the outer sheath 34, a tip portion of the inner insulator 32 is exposed from the tip portion of the outer conductor 33, and a tip portion of the center conductor 31 is exposed from the tip portion of the inner insulator 32.
  • each connection board 20 is a flexible board or a hard board having wiring patterns made of metal foil or the like.
  • Each connection board 20 is short in the longitudinal length of the coaxial flat cable 10, and has conductor members as terminal members for connection to another board or the like and connection members for connection to the coaxial flat cable 10.
  • each connection board 20 is provided with signal terminal members 22 and ground terminal members 23 which extend straightly in the longitudinal direction of the coaxial cables 30.
  • Each signal terminal member 22 is electrically connected to the center conductor 31 of the corresponding coaxial cable 30, and the ground terminal members 23 are electrically connected to the outer conductors 33 of the coaxial cables 30.
  • the exposed tip portions of the center conductors 31 of the coaxial cables 30 are soldered to the respective signal terminal members 22 by solder members 61.
  • the center conductor 31 of each coaxial cable 30 is soldered to the corresponding signal terminal member 22 so that they form a straight line extending in the longitudinal direction of the coaxial cable 30.
  • each coaxial cable 30 is exposed in sequence, whereby the inner insulator 32 prevents the center conductor 31 and the outer conductor 33 from being short-circuited with each other there.
  • the ground terminal members 23 extend in the same direction with the signal terminal members 22. End portions, close to the outer sheath 34, of the ground terminal members 23 extend closer to the outer sheath 34 than end portions of the signal terminal members 22. The ends, close to the outer sheath 34, of the ground terminal members 23 are connected to each other by a pad portion (ground portion) 25 which extends in the direction that is perpendicular to the longitudinal direction of the coaxial cables 30.
  • the outer conductors 33 of the coaxial cables 30 are soldered to the pad portion 25 by solder 62, whereby the outer conductors 33 are electrically connected to the ground terminal members 23 via the pad portion 25.
  • the pad portion 25 allows the outer conductors 33 to be easily connected to the ground terminal members 23 electrically.
  • the outer conductors 33 of the parallel-arranged coaxial cables 30 are soldered to the pad portion 25 by the solder 62 over the entire length of arrangement of the coaxial cables 30, whereby the potentials of the outer conductors 33 of all the coaxial cables 30 can be equalized and hence the electrical characteristics can be maintained easily.
  • low-melting-temperature solder is used as the solder 62 for connecting the outer conductors 33 to the pad portion 25 which is connected to the ground terminal members 23.
  • the outer conductors 33 are joined to the pad portion 25 by direct soldering using the low-melting-temperature solder 62.
  • the melting temperature of the low-melting-temperature solder is in a range of 120°C to 180°C.
  • Fig. 4 is a side sectional view corresponding to Fig. 3 and taken by a plane including the longitudinal direction of the coaxial cables 30, and shows the structure of the end portion and its neighborhood of a coaxial cable 30.
  • an end portion, in its longitudinal direction, of one resin film 41 is bonded to the connection board 20 with adhesive 51. Since the end portion of the one resin film 41 is bonded and thereby fixed to the connection board 20, the strength of connection between the coaxial flat cable 10 and the connection board 20 can be increased.
  • a resin protective film 42 is covered with a resin protective film 42.
  • the protective film 42 is bonded so as to bridge termination-processed end portions of the outer sheaths 34 of the coaxial cables 30 and the connection board 20.
  • the protective film 42 is bonded to the surface, provided with the coaxial cables 30, of the connection board 20.
  • the protective film 42 is bonded to cover the other resin film 41, the sheaths 34, the outer conductors 33, the inner insulators 32, the center conductors 31, and the connection board 20.
  • the portions, exposed from the resin films 41, of the coaxial cables 30 are protected by the protective film 42.
  • the electrical characteristics of the wiring member 1 can easily be maintained by the protective film 42.
  • the protective film 42 is employed in the embodiment, it may be omitted.
  • the parallel arrangement of the plural coaxial cables 30 is maintained by the resin films 41. Therefore, the coaxial cables 30 can be connected to the connection board 20 so as to be arranged accurately relative to the connection board without the need for using a ground bar that is formed with grooves.
  • the inner insulators 32 which exist between the center conductors 31 and the outer conductors 33, and are made of an insulative resin, are pressed and heated by a heating unit such as a pulse heat unit.
  • the inner insulators 32 are made of a resin whose melting temperature is about 300°C, such as PFA (tetrafluoroethylene-perfluoro alkylvinyl ether copolymer). Therefore, if the outer conductors 33 are directly soldered to the pad portion 25 using ordinary solder whose soldering temperature is about 300°C, the inner insulators 32 may be damaged due to the pressure and heat that are produced during the soldering of the outer conductors 33.
  • the damaging of the inner insulators 32 due to heat can be suppressed by placing a ground bar on the exposed portions of the outer conductors 33 and soldering them to the pad portion 25 by heating them via the ground bar.
  • the use of the ground bar causes increase in the number of parts, complication of the structure, and increase in the number of steps of an assembling process, resulting in cost increase.
  • solder whose soldering temperature is in the range of 120°C to 180°C is employed as the solder 62 for joining the outer conductors 33 to the pad portion 25.
  • the number of parts and the number of steps of an assembling process can be reduced and hence cost reduction is enabled while pitch deviation of the coaxial cables 30 and damaging of the inner insulators 32 are prevented.
  • Fig. 5 is a schematic diagram showing the configuration of a laminating machine.
  • Fig. 6 is a top view of coaxial flat cables 10 in the process of manufacture, (a) to (d) of Fig. 7 are side sectional views of an end portion of a coaxial flat cable 10 and a connection board 20 and illustrate a manufacturing process of the wiring member 1.
  • Resin films 41 each having windows 41a are bonded to the two respective sides of the parallel arrangement of the coaxial cables 30 which are pulled out while being arranged in a plane, while they are pressed against the coaxial cables 30 by a pair of rollers 81. Furthermore, a resulting laminated films are cut in its longitudinal direction by cutters 82 into plural long coaxial flat cable 10a.
  • each end portion, projecting from the ends of the resin film 41, of each coaxial cable 30 of each of the coaxial flat cables 10 is subjected to termination working in which the outer conductor 33, the inner insulator 32, and the center conductor 31 are exposed in order.
  • the coaxial cables 30 of each termination-processed coaxial flat cable 10 and connection boards 20 are positioned and disposed so that the tips of the center conductors 31 of the coaxial cables 30 are placed on or over the respective signal terminal members 22 and that the outer conductors 33 of the coaxial cables 30 are placed on or over the pad portion 25. And an end portion of one resin film 41 is bonded to the connection board 20 with adhesive 51.
  • Low-melting-temperature solder 62 is applied, in advance, to the pad portion 25 to which the outer conductors 33 are to be soldered. Applying the solder 62 to the pad portion 25 in advance allows the outer conductors 33 to be soldered to the pad portion 25 satisfactorily and smoothly in a next, soldering step.
  • solder 61 is applied, in advance, to the signal terminal members 22 to which the center conductors 31 are to be soldered.
  • the outer conductors 33 are soldered to the pad portion 25. Then, the center conductors 31 are soldered to the respective signal terminal members 22.
  • the soldering is performed by pulse heating method. More specifically, the solder 61 and the solder 62 are melted by instantaneously heating a heater tip H that is pressed against each target joining portion.
  • a solder rod 62 made of low-melting-temperature solder is placed on the tip portions of the outer conductors 33 so as to extend in their arrangement direction, and the solder rod 62 is heated by pressing the heater tip H against it from above.
  • the center conductors 31 are soldered to the respective signal terminal members 22 with the solder 61, and the outer conductors 33 are soldered to the pad portion 25 with the solder 62.
  • the outer conductors 33 of the parallel-arranged coaxial cables 30 are connected to each other in the arrangement direction of the coaxial cables 30, being soldered to each other with the solder 62.
  • the respective inner insulators 32 which exist between the center conductors 31 and the outer conductors 33 and are made of an insulative resin are also heated.
  • the heating temperature of the joining portion is set in the melting temperature range of 120°C to 180°C. Therefore, the inner insulators 32 are prevented from being damaged by the heat produced during the soldering.
  • the solder 61 for soldering the center conductors 31 to the respective signal terminal members 22 may be either ordinary solder whose soldering temperature is equal to about 300°C or low-melting-temperature solder whose melting temperature is 120°C to 180°C. Preliminary low-melting-temperature solder may be applied to the outer conductors 33 before soldering them by immersing them in a solder tank. Sticking preliminary solder to the outer conductors 33 allows their soldering to be performed more smoothly.
  • a protective film 42 is applied to a resulting structure so as to cover the other resin film 41, the sheaths 34, the outer conductors 33, the inner insulators 32, the center conductors 31, and a portion of the connection board 20.
  • the exposed portions of the outer conductors 33 and the further tip portions of the coaxial cables 30 are covered with the resin protective film 42, whereby the end portions, exposed from the resin films 41, of the members of the coaxial cables 30 are protected (see Fig. 4).
  • the wiring member 1 can be manufactured at a low cost while pitch deviation of the coaxial cables 30 and damaging of the inner insulators 32 are prevented.
  • the invention is not limited to such a case.
  • tip portions of the outer sheaths 34 may be exposed from both ends of the resin films 41 in their longitudinal direction and bonded to the connection board 20 with adhesive 51.
  • the distance between the center conductor 31 of each coaxial cable 30 and the surface of the connection board 20 is short and hence each center conductor 31 can be soldered to the corresponding signal terminal member 22 with less bending of the coaxial cable 30.
  • a resin reinforcement film 43 may be bonded so as to bridge the one resin film 41 and the connection board 20.
  • the reinforcement film 43 is bonded to the surface, opposite to the surface that is provided with the coaxial cables 30, of the connection board 20.
  • the reinforcement film 43 can increase the strength of the portion where the coaxial flat cable 10 and the connection board 20 are connected to each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mechanical Engineering (AREA)
  • Multi-Conductor Connections (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

L'invention concerne un élément de câblage et son procédé de fabrication qui permettent une réduction des coûts tout en prévenant un écart de pas de câbles coaxiaux (30) et un endommagement d'isolants internes (32). Dans une partie d'extrémité de chacun des câbles coaxiaux (30) connectée à une carte de connexion (20), un conducteur externe (33), un isolant interne (32) et un conducteur central (31) sont successivement exposés. La carte de connexion (20) comprend des éléments formant borne (22) auxquels les conducteurs centraux (31) des câbles coaxiaux (30) sont soudés, respectivement, et une partie plot (25) à laquelle les conducteurs externes (33) des câbles coaxiaux (30) sont soudés directement avec de la soudure à basse température de fusion (62).
PCT/CN2014/072381 2014-02-21 2014-02-21 Élément de câblage et son procédé de fabrication WO2015123863A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2014/072381 WO2015123863A1 (fr) 2014-02-21 2014-02-21 Élément de câblage et son procédé de fabrication
CN201480075872.2A CN106030911A (zh) 2014-02-21 2014-02-21 布线构件及其制造方法
JP2016570150A JP2017512373A (ja) 2014-02-21 2014-02-21 配線部材およびその製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/072381 WO2015123863A1 (fr) 2014-02-21 2014-02-21 Élément de câblage et son procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2015123863A1 true WO2015123863A1 (fr) 2015-08-27

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Country Link
JP (1) JP2017512373A (fr)
CN (1) CN106030911A (fr)
WO (1) WO2015123863A1 (fr)

Cited By (3)

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CN107851910A (zh) * 2015-11-30 2018-03-27 住友电气工业株式会社 电线束
WO2018209963A1 (fr) * 2017-05-17 2018-11-22 京信通信系统（中国）有限公司 Dispositif radiofréquence à cavité
US20220199287A1 (en) * 2019-04-05 2022-06-23 Autonetworks Technologies, Ltd. Wiring member

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
JP7028854B2 (ja) * 2019-12-26 2022-03-02 株式会社オートネットワーク技術研究所 ワイヤーハーネス及び蓄電モジュール
CN115395341B (zh) * 2022-09-16 2023-10-31 汉门电子（江苏）有限公司 一种可绕折的电连接器制备装置及其方法

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GB914498A (en) * 1960-08-16 1963-01-02 British Insulated Callenders Improvements in or relating to the jointing of electrical coaxial cables
CN1902784A (zh) * 2004-01-07 2007-01-24 第一电子工业株式会社 电连接器
JP2007213915A (ja) * 2006-02-08 2007-08-23 Sumitomo Electric Ind Ltd 多心ケーブルの接続構造体およびその製造方法
CN101483283A (zh) * 2008-01-11 2009-07-15 住友电气工业株式会社 同轴电缆束的连接构造
CN102055082A (zh) * 2009-10-27 2011-05-11 住友电气工业株式会社 同轴电缆束
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Publication number Priority date Publication date Assignee Title
CN107851910A (zh) * 2015-11-30 2018-03-27 住友电气工业株式会社 电线束
WO2018209963A1 (fr) * 2017-05-17 2018-11-22 京信通信系统（中国）有限公司 Dispositif radiofréquence à cavité
US20220199287A1 (en) * 2019-04-05 2022-06-23 Autonetworks Technologies, Ltd. Wiring member
US11990255B2 (en) * 2019-04-05 2024-05-21 Autonetworks Technologies, Ltd. Wiring member

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JP2017512373A (ja) 2017-05-18
CN106030911A (zh) 2016-10-12

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