WO2008020527A1 - Grounding structure and grounding method for shield wire - Google Patents
Grounding structure and grounding method for shield wire Download PDFInfo
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- WO2008020527A1 WO2008020527A1 PCT/JP2007/064424 JP2007064424W WO2008020527A1 WO 2008020527 A1 WO2008020527 A1 WO 2008020527A1 JP 2007064424 W JP2007064424 W JP 2007064424W WO 2008020527 A1 WO2008020527 A1 WO 2008020527A1
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- terminal
- ground
- drain
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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
- 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
- H01R9/0512—Connections to an additional grounding conductor
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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
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6591—Specific features or arrangements of connection of shield to conductive members
- H01R13/65912—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable
- H01R13/65914—Connection of shield to additional grounding conductors
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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
- H01R4/72—Insulation of connections using a heat shrinking insulating sleeve
- H01R4/726—Making a non-soldered electrical connection simultaneously with the heat shrinking
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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
- 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
- H01R9/0518—Connection to outer conductor by crimping or by crimping ferrule
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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
- H01R2105/00—Three poles
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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
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
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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
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
- H01R24/56—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency specially adapted to a specific shape of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables
- H01R24/562—Cables with two screens
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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
- H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
- H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
- H01R4/183—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
- H01R4/184—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
Definitions
- the present invention relates to a grounding structure and a grounding method for a shielded wire, and in particular, to reduce a connection structure between a drain wire and a grounded wire drawn from a terminal of the shielded wire.
- the shield wire is grounded by stripping the sheath ends of a plurality of shield wires 1A to 1F as shown in FIG. If the braid is exposed, it is gathered to form a drain wire la to lf, and the drain wire la to lf and the ground wire 2 are bound together with tape 3, and the drain wire la to be exposed from the tip of tape 3; If and The ground core wire 2a is subjected to concentrated resistance welding, and the ground terminal 4 connected to the other end of the ground wire 2 is grounded to the vehicle body panel or the like.
- a drain wire formed with a metal braid of shield wire instead of a drain wire formed with a metal braid of shield wire, a drain wire made of an uncoated insulating wire or a strand is wired together with a core electric wire, and the drain wire is connected to a metal braided tube or a metal foil. Even if the shield wire is in contact with the! /, It can be grounded by the same method as in Patent Document 1.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-268893 Disclosure of the invention
- the present invention has been made in view of the above problems, and shortens the length of the drain wire connected to the ground wire as much as possible, and suppresses the enlargement of the harness due to the connection portion between the drain wire and the ground wire.
- it is an object to provide a shielded wire grounding structure and grounding method that has high! / Shielding performance and workability.
- the present invention provides a pair of a leading end of a drain wire drawn from a shield wire and a conductor on the other end of the ground wire having a ground terminal connected to one end.
- a shielded wire grounding structure is provided, characterized in that it is connected in a single crimp connection or twisted connection using an intermediate crimp terminal with a U-shaped cross section provided opposite to the barrel.
- the shield wire is obtained by sequentially covering a core wire made of an insulation-coated wire serving as a signal wire with a metal braided tube or a shield layer made of a metal foil and a sheath made of an insulating resin material. In order to connect the layers to the ground, a conductor force not covered with insulation, such as a drain wire, is brought into contact with the shield layer and covered with the sheath.
- the drain wire may be formed by stripping the shielded metal braid of the shield layer! /.
- the drain wire of the shielded wire is electrically connected to the grounded wire grounded to the vehicle body or the like by welding such as resistance welding or ultrasonic welding as described above.
- a single crimp connection or twisted connection is used with an intermediate crimp terminal.
- the dimensions required for the connection work can be shortened compared to welding connection, As a result, it is possible to reduce the length of the core wire and drain wire drawn from the shield wire.
- the drain wire that is connected by crimping or twisting using the ground wire and the intermediate crimp terminal should be the shortest dimension compared to conventional welding, which should be pulled out at least 40 mm from the end of the shield wire. Can be reduced to less than half. As a result, the stripping length of the shield wire can be greatly shortened, and the shield wire does not impair the shield property, and a high shield property can be imparted. And resistance resistance welding It is necessary to move to an anti-welder and perform welding. However, crimping can be performed on one line in terminal crimping or twisting, and power S can be used to reduce work man-hours and increase work efficiency.
- the ground terminal connected to the terminal of the ground wire is provided with a water stop in a crimp connection portion with the ground wire, and the ground terminal is directly connected to the vehicle body. Yes.
- the water stop portion is formed by dripping silicon on the crimp connection portion of the ground terminal with the ground wire or by attaching a water stop rubber plug.
- the present invention comprises a leading end of a drain wire drawn from a shield wire and a single core wire coated with an insulating coating, and a connector receiving terminal accommodated in the connector is connected to a conductor at one end.
- a wire grounding structure is provided.
- the first invention is different in that the ground terminal at one end of the ground wire is connected to the vehicle body panel, whereas the second invention is different in that the terminal at one end of the ground wire is accommodated in the connector. According to the second invention, it is not necessary to route the ground wire to the vehicle body panel, the ground wire can be shortened, and the configuration can be simplified.
- the connector receiving terminal is provided with a water stop portion at a crimp connection portion with a ground wire.
- the water stop portion is formed by dripping silicon on a crimp connection portion with a ground wire of a connector housing terminal or by attaching a water stop rubber plug, and the terminal force of the ground wire connected to the connector It is possible to prevent water from entering.
- the connector accommodates a crimp terminal connected to a terminal of a core electric wire drawn out from the shield wire and the connector accommodating terminal connected to one end of the ground wire, respectively.
- the connected connector receiving terminal is configured to be connected to a ground circuit of a circuit body housed in an electronic control unit to which the connector is connected.
- the connector housing terminal connected to the ground wire is grounded in the electronic control unit. Since it is connected to the circuit, the ground connection can be facilitated.
- the circuit body is made of a printed circuit board, and the terminal material soldered to the conductor constituting the ground circuit of the printed circuit board is connected to the ground. The connector receiving terminal connected to the wire is connected.
- the twisted drain wire and the ground wire are prevented from being untwisted by covering the drain wire and the ground wire with a heat-shrinkable tube or a metal tube so that they are in close contact with each other. Can ensure electrical connection between drain wire and ground wire Also, protect the connection between the drain wire and ground wire with a heat-shrinkable tube or metal tube.
- a drain wire drawn from 2 to 5 shield wires is connected to the conductor exposed from one end of the ground wire, and a cap made of an insulating resin is put on the connection portion. It is preferable.
- drain wires of the plurality of shield wires connected to one earth wire at a time are such that the core wires of the shield wires are accommodated in the same connector.
- the connecting portion when the connecting portion is covered with a cap made of an insulating resin, the connecting portion can be easily protected.
- connection portion between the drain wire and the ground wire is accommodated.
- the connector cover is attached to the connector for inserting and locking the terminal of the core electric wire terminal. It can be accommodated in a state in which the excess portion of the drain wire is not generated in the accommodating portion provided in the corrugated tube or in the corrugated tube exterior to the core electric wire.
- connection part between the drain wire and the ground wire in the connector cover or corrugated tube, the connection part becomes less susceptible to external vibrations and heat, and the protection performance is improved. Increase the power with S
- a relay connection ground wire for relay connection between a plurality of drain wires is provided, and a conductor at one end of the relay connection ground wire is connected to the ground.
- the conductor at the other end may be connected to another drain wire while being connected to the wire and the drain wire.
- connection portions when there are a plurality of connection portions to which the drain wire terminals are connected, if the connection portions are connected to each other via the relay connection ground wire, the ground wire is connected to one connection portion.
- all drain wires can be grounded.
- the present invention thirdly, a step of peeling the sheath from the end of the shielded wire to the required dimensions, and pulling out the drain wire and the core wire to the outside,
- a method for grounding a shielded wire including:
- a step of crimping and connecting a crimping terminal to the end of the drawn-out core wire, a tip of the drawn-out drain wire, and a single core wire coated with an insulating coating, and the connector receiving terminal accommodated in the connector is one end
- the other end of the ground wire connected to the other conductor is co-crimped or twisted together using a U-shaped intermediate crimping terminal provided with a pair of barrels facing each other;
- a method for grounding a shielded wire including:
- the drain wire can be shortened by connecting the drain wire and the ground wire by crimping using an intermediate crimping terminal, or by twisting them together. Therefore, tape winding becomes unnecessary, and the number of work steps can be reduced.
- the steps may be performed in any order, and the crimping connection step of the crimping terminal to the core wire and the crimping connection step of the intermediate crimping terminal between the drain wire and the ground wire are continuously performed. It is preferable to do so. According to this method, since the crimp connection of the crimp terminal to the core electric wire and the crimp connection of the drain wire and the ground wire are continuously performed! /, It is possible to efficiently perform the crimp connection operation. .
- a crimping terminal When connecting a general electric wire other than a shielded wire to the connector in addition to the shielded core electric wire, a crimping terminal may be crimped and connected to the end of the general electric wire in the same process as the crimping connection operation. You can connect the core wire of the shielded wire and the general wire to the connector, and then connect the drain wire and the ground wire by crimping.
- the method of the present invention further includes a step of covering the crimp connection portion between the drain wire and the ground wire with an insulating resin cap,
- the method includes a step of covering the connecting portion in which the drain wire and the ground wire are twisted together with a heat-shrinkable tube so that the heat-shrinkable tube is in close contact with each other, or a cylindrical metal tube.
- a heat-shrinkable tube so that the heat-shrinkable tube is in close contact with each other, or a cylindrical metal tube.
- the method of the present invention includes a step of inserting and locking the crimp terminal of the core electric wire terminal into the cavity of the connector;
- connection portion of the drain wire and the ground wire in the connector cover or the corrugated tube since it is only necessary to accommodate the connection portion of the drain wire and the ground wire in the connector cover or the corrugated tube, it is not necessary to separately provide the arrangement portion of the connection portion, and the connection portion. It is no longer necessary to tape the wire around the core electric wire or the like, and workability can be improved.
- the terminal is connected to the core wire drawn from the shield wire and the leading end of the drain wire, and to the conductor on the other end of the ground wire having one end connected to the ground terminal.
- a joint connector is provided on the inner wall of the connector cover attached to the connector for inserting and locking the crimp terminal connected to the core wire, and the drain wire terminal and the ground wire terminal are provided on the joint bus bar in the joint connector.
- a drain wire and a ground wire are connected to each other, and a grounding structure for the shield wire is provided.
- a connector housing terminal that is composed of a core wire drawn from the shield wire, a leading end of the drain wire, and a single core wire coated with an insulating coating, and is housed in the connector.
- a terminal is connected to the conductor on the other end of the ground wire connected to the conductor at the end, and a joint is attached to the inner wall of the connector cover attached to the connector for inserting and locking the crimp terminal connected to the core wire.
- a connector is provided, the drain wire terminal and the ground wire terminal are respectively connected to the joint bus bar in the joint connector, and the drain wire and the ground wire are connected! /.
- the drain wire of the shielded wire is connected to the grounded wire via a joint bus bar that is not electrically connected by welding such as resistance welding or ultrasonic welding.
- welding such as resistance welding or ultrasonic welding.
- connecting the drain wire and ground wire to the joint bus bar by connecting the drain wire and ground wire to the drain and ground wires by crimping or pressure welding is necessary for connecting the terminal to the drain wire.
- the dimensions of the core wire and drain wire drawn from the shield wire can be shortened compared to the case of welding connection.
- the stripping length of the shield wire can be significantly shortened, and the shield wire can be provided with a high shield property that does not impair the shield property.
- resistance welding it is necessary to move to a resistance welder for welding, but terminal connection can be performed on one line, reducing work man-hours and improving work efficiency. .
- the joint connector is fixed to the inner wall of the connector cover via an adhesive, or
- the joint connector is preferably housed in a connector housing portion provided on the inner wall of the connector cover.
- the joint connector when the joint connector is accommodated in the connector cover, it is not necessary to hold the connection portion between the drain wire and the ground wire along the outer periphery of the shield wire by tape winding or the like. Therefore, it is possible to reduce the thickness of the wire harness composed of a plurality of shielded wires. Further, the joint connector is less susceptible to external vibration and heat, and the force S that improves the protection performance can be reduced.
- the force S can be set by installing the joint connector inside the connector cover without making the connector cover complicated.
- a method for grounding a shielded wire including:
- the terminal of the drawn core wire and drain wire, and a single core wire coated with an insulation coating, and the connector receiving terminal accommodated in the connector is connected to the other end of the ground wire connected to the conductor of one end. Connecting a terminal to the exposed conductor;
- a method for grounding a shielded wire including:
- the joint connector may be fixed to the inner wall of the connector cover by connecting the drain spring and the ground spring to the joint connector, or before the connection.
- the drain wire of the shielded wire and the ground wire are crimped using an intermediate crimping terminal, connected by twisting, or connected via a joint bus bar! Therefore, the length of the drain wire can be shortened to 40 mm at the shortest compared to the case where the connection between the drain wire and the ground wire is welded, and the stripping length of the shield wire can be shortened accordingly. Therefore, the shielding performance of the shielded wire can be improved.
- the exposed drain wire is short because the sheath length of the shield wire sheath is short, when connecting multiple drain wires to the ground wire, tape winding is used to align the tips of the multiple drain wires. Is unnecessary, and the number of work steps can be reduced.
- the length of the drain wire to the connection portion with the ground wire or the joint connector is short, the terminal of the core wire terminal protruding from the peeled end of the shield wire is connected to the connector for inserting and locking. The distance is shortened, and the connection portion with the ground wire or the joint connector can be accommodated in the connector cover to be attached to the connector without generating a drain wire.
- FIG. 1 is a schematic diagram showing a grounding structure for a shielded wire according to a first embodiment of the present invention.
- FIG. 2 is a perspective view showing a shield wire.
- FIG. 3 (A) is a perspective view showing a crimp terminal, and (B) and (C) are drawings showing a crimp connection method of a drain wire and a ground wire.
- FIG. 4 shows a state where the connector is connected to the end of the wire harness, (A) is a perspective view, and (B) is a cross-sectional view taken along line AA.
- FIG. 5 is a perspective view showing a state where the connector cover is attached to the connector.
- FIG. 6 (A) to (F) are drawings showing a method of ground connection of shielded wires.
- FIG. 7 is a drawing showing a first modification of the first embodiment.
- FIG. 8 is a drawing showing a second modification of the first embodiment.
- FIG. 9 (A) to (C) are drawings showing a third modification of the first embodiment.
- FIG. 10 is a drawing showing a fourth modification example of the first embodiment.
- FIG. 11 is a drawing showing a second embodiment of the present invention.
- FIG. 12 is a drawing showing a state where twisted wires of a drain wire and a ground wire are twisted back.
- FIGS. 13A and 13B are drawings showing a modification of the second embodiment.
- FIG. 14 is a drawing showing a third embodiment of the present invention.
- FIG. 15 is an enlarged view of a main part showing a state in which a drain wire and a ground wire are connected.
- FIG. 16 is a cross-sectional view showing a grounding structure of a shielded wire according to a fourth embodiment.
- FIG. 17 is a cross-sectional view of a joint connector.
- FIG. 18 is a view showing a modification of the fourth embodiment.
- FIG. 19 is a drawing showing a conventional example.
- a wire harness W / H comprising a plurality of shielded wires 10 and general electric wires 20 is routed in the engine room of an automobile and is connected to the fuel injection control device 31 at its terminal.
- One connector 30 to be mated is connected.
- the shield wire 10 includes a core wire 12 made of an insulated covered wire serving as one or a plurality of signal wires and a drain wire 11, and the drain wire 11
- the core wire 12 and the core wire 12 are sequentially covered with a shield layer 13 made of a metal foil or metal braided tube and a sheath 14 also having an insulating resin material force, and the drain wire 11 is brought into contact with the shield layer 13 to conduct.
- the shield wire 10 cuts and peels off the sheath 14 and the shield layer 13 having a tip force of about 40 mm and pulls out the drain wire 11 and the core wire 12.
- the wire harness W / H includes seven shield wires 10, and these shield wires are connected to a shield wire 10A connected to a knock sensor and to an engine speed sensor. It consists of shield wire 10B, shield wires 10C and 10D connected to the left and right air-fuel ratio sensors, shield wires 10E and 10F connected to the left and right oxygen sensors, and shield wire 10G connected to the throttle sensor.
- the shield layers 13 of the shield wires 10A and 10B are made of a metal braided tube, while the shield layers 13 of the remaining shield wires 10C to 10G are made of a metal foil.
- FIG. 1 the illustration of the general electric wire 20 of the wire harness W / H is omitted.
- the drain wires 11A to 1IF of the shielded wires 10A to 1 OF are connected to the ground wire 50 to which the ground terminal 51 to be bolted to the vehicle body is connected.
- the ends are crimped by intermediate crimp terminals 40.
- the intermediate crimp terminal 40 has a U-shaped cross section in which a pair of crimp barrels 40b are provided on both sides of a substrate portion 40a made of a conductive metal plate, and is parallel to the substrate portion 40a. Place the end of the wired drain wire 11 and the exposed core wire 50a of the ground wire 50, crimp the crimping barrel 40b inward, and closely contact the drain wire 11 and the ground wire 50 with the substrate 40a and barrel 40b. Let them be crimped together. A crimped connection between the drain wire 11 and the ground wire 50 by the intermediate crimp terminal 40 is covered with a bottomed cylindrical cap 41 made of insulating resin. In this embodiment, as shown in FIG.
- ground wires 11A, 11C, 1 ID and a ground wire 50 A are connected to intermediate crimp terminals 40A, 40B. Are connected by crimping.
- the ground terminal 51A connected to the ground wire 50A is also connected to the ground wire 50C connected to the connector 30, which is used for grounding the circuit of the fuel injection control device 31 and connected to the ground wire 50B.
- a ground wire 50D for grounding the circuit inside the room is also connected to the ground terminal 51B.
- the remaining drain wire 11 G of the shield wire 10 G is connected to the connector 30 through the waterproof shrinkable tube 42.
- a waterproof rubber stopper 52 is attached to the connection part between the ground wire 50 and the ground terminal 51, the core wire 12 of the shield wire 10, the drain wire 11G, and the general wire 20 and the connector 30 with a water stop rubber plug 52.
- a connector is provided to stop the connector 30 from water.
- the water stop may be formed by dripping silicon into the water stop.
- a connector cover 32 is attached to the surface of the connector 30 on the wire harness connection side, and the connector cover 32 connects the connector 30 and the wire harness W / H. Covering.
- the connector cover 32 has a reduced diameter from one end to the other end on the connector mounting side, and the locking collar 32a extends laterally from both side edges of the large diameter end.
- the connector 32 is attached to the connector 30 by projecting the hook 32 a into the recess 30 a provided in the connector 30.
- the reduced diameter end of the connector cover 32 has an opening 32b, and the wire harness W / H drawn straight out from the opening 32b is fixed to the tape winding tongue 32c provided at the edge of the opening 32b with a tape T. .
- the crimp connection portion between the drain wire 11 of the seal wire 10 and the ground wire 50 is accommodated in the connector cover 32.
- the connector cover 32 is provided with a slit 32d from the one end to the other end.
- the sheath 14 and the shield layer 13 are cut and peeled also on the other end side of the shield wire 10, the core wire 12 is pulled out, and the waterproof connector 34 is connected to the end of the core wire 12 drawn out of each shield wire 10.
- the waterproof connector 34 is connected between the core wire 12 and the waterproof rubber plug 34a. Has a waterproof function. These waterproof connectors 34 are respectively connected to various sensors.
- the ground wire 11 is not connected to the connector 34. As a result, the water that has soaked from one end of the shielded wire 10 to the other end is drained to the other end, and in the entire wiring harness W / H, various sensors (or electrical circuits) are installed from the outside of the waterproof connector 34 and the core wire 12. ) Is prevented from entering water.
- the sheath 14 and the shield layer 13 of about 40 mm are cut and peeled from the tip of the shield wire 10, and the drain wire 11 and the core wire 12 are pulled out by about 40 mm.
- crimp terminals are crimped and connected to the ends of the core wire 12 and the general wire 20.
- FIG. 6B only the shield wire 10 is shown.
- the crimp terminal connected to the ends of the core wire 12 and the general wire 20 is inserted and locked into the cavity of the connector 30.
- the drain wire 11 and the ground wire 50 are crimped and connected by the intermediate crimping terminal 40 as shown in FIG. 6 (D).
- a cap 41 is put on the connecting portion between the drain wire 11 and the ground wire 50.
- the connector cover 32 is attached to the connector 30, and the connector cover 32 covers the connection portion between the connector 30 and the wire harness W / H.
- the connecting portion between the drain wire 11 and the ground wire 50 is accommodated in the connector cover 32.
- the drain wire 11 of the shielded wire 10 and the ground wire 50 are crimped and connected using the intermediate crimping terminal 40.
- the length of the drain wire 11 can be shortened to 40 mm at the shortest, and the stripping length of the shield wire 10 can be shortened accordingly. 10 shield performance can be improved.
- connection portion of the drain wire 11 and the ground wire 50 is connected to the terminal of the wire harness W / H.
- the connector By housing the connector in the connector cover 32 attached to the connector 30, it is possible to enhance the protection performance in which the connecting portion is hardly affected by external vibration or heat. This also eliminates the need for tape-fixing the connecting portion around the wire harness W / H, thereby suppressing the local enlargement of the harness and reducing the size and improving workability. it can.
- the first to sixth steps are not limited to the order, and after the first step, the second ⁇ fourth ⁇ third ⁇ fifth, second ⁇ fourth ⁇ third ⁇ fifth, second ⁇ second 4 ⁇ 5 ⁇ 3rd, 4th ⁇ 2nd ⁇ 3rd ⁇ 5th, 4th ⁇ 2nd ⁇ 5th ⁇ 3rd, 4th ⁇ 5th ⁇ 2nd ⁇ 3rd Also good.
- the degree of freedom in the manufacturing process of the wire harness W / H can be increased.
- FIG. 7 shows a first modification of the first embodiment.
- the drain wire 11G of the shield wire 10G is not connected to the connector 30, and the drain wire 11G is crimped and connected to the ground wire 50A through the intermediate crimping terminal 40A together with the other drain wires 11A, 11C, and 11D.
- the drain wires 11 of all the shield wires 10 are not connected to the connector but are connected to the vehicle body panel via the ground wire 50! /.
- FIG. 8 shows a second modification of the first embodiment.
- a slit 15 is provided in the shield layer 13 and the sheath 14 in the middle of the shield wire 10F, the drain wire 11F is drawn out from the slit 15, and the drain wire 11F is connected to another shield wire.
- crimp connection is made using intermediate crimp terminal 40B.
- drain wire 11 may be pulled out from the intermediate position with the other shield wires 10A to 10E and 10G.
- FIG. 9 shows a third modification of the first embodiment.
- the shape of the connector cover attached to the connector is different from that of the first embodiment, and the opening 32a ′ serving as the wire harness outlet of the connector cover 32 ′ is formed with respect to the attachment surface 32b ′ to the connector 30.
- the wire harness W / H connected to the connector is a laterally extending connector that protrudes outward from the opening 32a ′.
- the connector cover 32 ′ also has a locking claw 32 c ′ at a required location on the mounting surface 32 a ′ side.
- the locking claw 32 c ′ is locked and fixed to the connector 30, and the connector cover 32 ′ is attached to the connector 30. Wearing.
- FIG. 10 shows a fourth modification of the first embodiment.
- a connector cover is not attached to the connector 30, and a cylindrical corrugated tube 33 in which crests and troughs are alternately provided in the axial direction on the shield wire 10 and the general electric wire 20 is sheathed.
- the corrugated tube 33 accommodates the crimp connection portion between the drain wire 11 of the shield wire 10 and the ground wire 50! /.
- FIG. 11 and FIG. 12 show a second embodiment of the present invention.
- the connecting portion between the drain wire 11 and the ground wire 50 is different from that in the first embodiment, and the strand of the drain wire 11 and the strand of the ground wire 50 are twisted and connected.
- connection portion 43 the strands of the drain wire 11 and the ground wire 50 are twisted back, and the strands are twisted together to form the connection portion 43.
- the connecting portion 43 is covered with a cylindrical heat-shrinkable tube 44, and the heat-shrinkable tube 44 is heated. It is further contracted and is brought into close contact with the outer peripheral surface of the connection portion 43.
- the heat-shrinkable tube 44 is a waterproof shrinkable tube with a thermoplastic adhesive on the inner wall.
- the heat-shrinkable tube melts the heat-shrinkable adhesive and adheres to the outside of the twisted drain wire and ground wire. is there.
- FIG. 13 shows a modification of the second embodiment.
- a connecting portion 43 formed by twisting the strands of the drain wire 11 and the ground wire 50 is covered with a cylindrical metal tube 45 as shown in FIG.
- the metal tube 45 is crimped to the connecting portion 43 as shown in FIG. 13 (B) by crimping from both sides.
- the metal wire 45 is put on the connecting portion 43 formed by twisting the strands of the drain wire 11 and the ground wire 50 and crimped. Since the wires are not twisted back and the individual wires are conducted even through the metal tube 45, more electrical connection can be ensured.
- the same cap as in the first embodiment may be put on the metal tube 45 crimped to the connection portion 43 of the drain wire 11 and the ground wire 50! /.
- the configuration of the ground wire connected to the drain wire 11 is different from that of the previous embodiment.
- the ground wire 53 is a single-core wire in which a conductor is covered with an insulation coating 54, and is accommodated in the connector 30 in the conductor 55 a at one end exposed from the insulation coating 54. While the terminal 56 is connected, the conductor 55b at the other end is connected to the drain wires 11A, 11C, and 1 ID by the intermediate crimp terminal 40A.
- Example of cross-sectional area of conductor 55 of ground wire 53 In example, 0 ⁇ 5mm 2, and 0. 75 mm 2 or 1 ⁇ 25 mm 2, connector 30 connector housing terminals 56 of the ground wire 53 is connected is the connector same connector core wire 12 is connected.
- the crimp connection portion between the ground wire 53 and the connector receiving terminal 56 is provided with a water stop portion comprising a water stop rubber plug 57, and the outer peripheral surface of the water stop rubber plug 57 is connected to the connector.
- the 30 cavity 30b is in close contact with the inner peripheral surface to prevent water from entering the connector 30.
- a circuit body made up of a printed circuit board 35 is accommodated in an electronic control unit made up of the fuel injection control device 31 to which the connector 30 is connected.
- the connector 30 is fitted and connected to the connector housing part 31a of the fuel injection control device 31, the connector housing terminal 56 of the ground wire 53 housed in the connector 30 is connected to the conductor 36 constituting the ground circuit of the printed circuit board 35. Connected with material 37.
- the connecting portion connecting the drain wires 11 A, 11C, 1 ID and the ground wire 53 and the connecting portion connecting the drain wires 11B, 1 1E, 1 IF are connected via the ground wire 58 for relay connection. is doing.
- the relay connection ground wire 58 is a single-core wire with a conductor covered with an insulation coating 59.
- One end of the conductor 70a exposed from the insulation coating 59 is connected to the drain wires 11A, 11C, 1 ID and the ground wire 53. Both are crimped and connected by the intermediate crimping terminal 40A, while the conductor 70b at the other end is crimped and connected by the intermediate crimping terminal 40B together with the drain wires 11B, 11E, and 1IF.
- the connector housing terminal 56 connected to the ground wire 53 is housed in the electronic control unit. Since it is connected to the ground circuit of the printed circuit board 35, the ground connection can be facilitated.
- ground wire 53 it is not necessary to route the ground wire 53 to the vehicle body panel, and the ground wire 53 can be shortened, and the configuration can be simplified.
- the ground wire 53 is formed of a single core wire covered with the insulation coating 54, the ground wire 53 and the drain wire 11 entered the gap between the conductor 55 and the insulation coating 54. It is possible to prevent water from entering the connector 30 side through the conductor 55 of the ground wire 53 and the insulating coating 54.
- a plurality of connections are connected to each other via a relay connection ground wire 58. Therefore, it is possible to connect all the drain wires 11 to the ground by connecting the ground wire 53 to one connection. As a result, it is not necessary to provide the ground wire 53 with the connector receiving terminal 56 connected to one end for each connecting portion, and the number of connector receiving terminals 56 can be reduced.
- the connecting portion between the drain wire 11 and the ground wire 50 may be twisted and connected as in the second embodiment.
- relay connection ground wire 58 for connecting the connection portions is not limited to the ground wire to which the connector receiving terminal is connected, but is connected to the ground terminal connected to the vehicle body panel as in the first embodiment. It can also be used in the case of a ground wire.
- FIGS. 16 and 17 show a fourth embodiment of the present invention.
- the drain wire 11 of the shield wire 10 and the ground wire 50 are connected via the joint bus bar 61 in the joint connector 60.
- crimp terminals 62 and 63 are crimped and connected to the end of the drain wire 11 drawn from the shield wire 10 and the other end of the ground wire 50 connected to the other end of the ground wire 50, respectively. Yes.
- the crimp terminals 62, 63 are provided with female end portions 62a, 63a connected to the joint bus bar 61 at one end, and crimp barrels 62b, 63b at the other end.
- the crimp barrels 62b, 63b are connected to the drain wire 11.
- Each ground wire 50 is crimped and connected by crimping.
- the joint bus bar 61 that connects the drain wire 11 and the ground wire 50 includes a strip-like joint portion 61a and a plurality of male tab-like terminal portions 61b protruding from the joint portion 61a.
- the joint bus bar 61 is accommodated in a joint connector 60 made of a resin molded product, and a terminal portion 6 lb of the joint bus bar 61 is disposed in each of the cavities 60a of the joint connector 60.
- the crimp terminals 62 and 63 of the drain wire 11 and the ground wire 50 are inserted and locked to the respective cavities 60a, and the female terminal portions 62a and 63a of the crimp terminals 62 and 63 are connected to the terminal portions 61b of the joint bus bar 61.
- the joint connector 60 is a connector 30 to which the core wire 12 of the shielded wire 10 is connected.
- the connector cover 32 ′ is attached to the inner wall of the connector cover 32 ′ by attaching an adhesive 64 to the inner wall.
- the drain wire 11 and the ground wire 50 connected to the joint connector 60 are pulled out through the opening 32a 'of the connector cover 32'.
- the sheath and shield layer of about 40 mm are cut from the tip of the shield wire 10 and the drain wire 11 and the core wire 12 are bowed out by about 40 mm.
- crimp terminals 62 and 63 are crimped and connected to the ends of the drain wire 11, the core wire 12, the ground wire 50 and the general wire 20.
- the crimp terminal connected to the core electric wire 12 and the end of the general electric wire is inserted and locked into the cavity of the connector 30.
- the crimp terminals 62 and 63 of the drain wire 11 and the ground wire 50 are inserted and locked into the cavity 60a of the joint connector 60, and the drain wire 11 and the ground wire 50 are jointly connected via the joint bus bar 61. To do.
- the joint connector 60 is fixed to the inner wall of the connector cover 32 ′ to be attached to the connector 30 with the adhesive 64.
- the connector cover 32 ′ is attached to the connector 30, and the connection portion between the connector 30 and the wire harness W / H is covered with the connector cover 32 ′, and the joint connector 60 is placed in the connector cover 32. Accommodate.
- the grounding structure of the shielded wire configured using the above method, welding is not required for the connection between the drain wire 11 of the shielded wire 10 and the grounded wire 50, as in the first embodiment. Therefore, compared to the case where the connection part of the drain wire 11 and the ground wire 50 is welded, the lead-out length of the drain wire 11 can be shortened to 40 mm at the shortest, and the stripping length of the shield wire 10 can be shortened accordingly. Shield performance of shielded wire 10 can be improved.
- the joint connector 60 for connecting the drain wire 11 and the ground wire 50 is fixedly accommodated on the inner wall of the connector cover 32 'attached to the connector 30 connected to the end of the wire harness W / H. Therefore, the joint connector 60 is hardly affected by external vibration and heat, and the protection performance can be improved. This also allows the joint connector 60 to be It is no longer necessary to fix the tape on the singleness W / H, and the local enlargement of the wire harness W / H can be suppressed to reduce the size and improve workability.
- the terminal connected to the drain wire 11 and the ground wire 50 is not limited to a crimp terminal, but may be a pressure contact terminal having a pressure contact slot.
- the ground wire may be a ground spring consisting of a single core spring with a connector receiving terminal connected to one end as in the third embodiment! /.
- FIG. 18 shows a modification of the fourth embodiment.
- the connector housing portion 32e ′ for housing the joint connector 60 is integrally formed on the inner wall of the connector cover 32 ′, which does not fix the joint connector 60 to the inner wall of the connector cover 32 ′ with an adhesive.
- a locking groove 32f ′ is provided on the inner surface of the connector housing portion 32e ′, while a locking claw 60b is provided on the outer surface of the joint connector 60, and the locking claw 60b of the joint connector 60 is connected to the connector housing portion 32e ′.
- the joint connector 60 is fixed in the connector housing portion 32e ′ of the connector cover 32 ′ by being locked in the stop groove 32f ′.
- the joint connector 60 may be installed anywhere as long as it is the inner wall of the connector cover 32 ′.
Landscapes
- Insulated Conductors (AREA)
- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
- Cable Accessories (AREA)
- Manufacturing Of Electrical Connectors (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800303638A CN101507051B (zh) | 2006-08-15 | 2007-07-23 | 用于屏蔽线的接地构造和接地方法 |
EP07791157A EP2053694A4 (en) | 2006-08-15 | 2007-07-23 | GROUNDING STRUCTURE AND GROUNDING METHOD FOR SHIELDED CABLE |
US12/309,232 US20090314511A1 (en) | 2006-08-15 | 2007-07-23 | Shielded Wire-Grounding construction |
US13/064,418 US8258402B2 (en) | 2006-08-15 | 2011-03-23 | Shielded wire-grounding construction |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006221683 | 2006-08-15 | ||
JP2006-221683 | 2006-08-15 | ||
JP2006-260569 | 2006-09-26 | ||
JP2006260569 | 2006-09-26 | ||
JP2007179348A JP2008108699A (ja) | 2006-08-15 | 2007-07-09 | シールド線のアース処理構造およびアース処理方法 |
JP2007-179348 | 2007-07-09 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/309,232 A-371-Of-International US20090314511A1 (en) | 2006-08-15 | 2007-07-23 | Shielded Wire-Grounding construction |
US13/064,418 Continuation US8258402B2 (en) | 2006-08-15 | 2011-03-23 | Shielded wire-grounding construction |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008020527A1 true WO2008020527A1 (en) | 2008-02-21 |
Family
ID=39082054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/064424 WO2008020527A1 (en) | 2006-08-15 | 2007-07-23 | Grounding structure and grounding method for shield wire |
Country Status (5)
Country | Link |
---|---|
US (2) | US20090314511A1 (ja) |
EP (1) | EP2053694A4 (ja) |
JP (1) | JP2008108699A (ja) |
CN (1) | CN101507051B (ja) |
WO (1) | WO2008020527A1 (ja) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009220641A (ja) * | 2008-03-14 | 2009-10-01 | Furukawa Electric Co Ltd:The | シールド電線におけるドレーン線とアース線とのジョイント部の止水構造及び止水方法 |
JP2017027696A (ja) * | 2015-07-17 | 2017-02-02 | 住友電装株式会社 | シールド線のドレン線止水構造 |
CN109510161A (zh) * | 2018-11-29 | 2019-03-22 | 西安神电高压电器有限公司 | 一种全绝缘管型母线系统 |
CN109510161B (zh) * | 2018-11-29 | 2023-08-25 | 西安神电高压电器有限公司 | 一种全绝缘管型母线系统 |
Also Published As
Publication number | Publication date |
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CN101507051B (zh) | 2012-08-01 |
EP2053694A1 (en) | 2009-04-29 |
JP2008108699A (ja) | 2008-05-08 |
EP2053694A4 (en) | 2011-09-07 |
US8258402B2 (en) | 2012-09-04 |
CN101507051A (zh) | 2009-08-12 |
US20110168423A1 (en) | 2011-07-14 |
US20090314511A1 (en) | 2009-12-24 |
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