WO2015104992A1 - コネクタ付電線及びその製造方法 - Google Patents
コネクタ付電線及びその製造方法 Download PDFInfo
- Publication number
- WO2015104992A1 WO2015104992A1 PCT/JP2014/084008 JP2014084008W WO2015104992A1 WO 2015104992 A1 WO2015104992 A1 WO 2015104992A1 JP 2014084008 W JP2014084008 W JP 2014084008W WO 2015104992 A1 WO2015104992 A1 WO 2015104992A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adhesive
- electric wire
- connector
- covering material
- resin
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000000853 adhesive Substances 0.000 claims abstract description 127
- 230000001070 adhesive effect Effects 0.000 claims abstract description 121
- 239000000463 material Substances 0.000 claims abstract description 70
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 17
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 17
- 229920005672 polyolefin resin Polymers 0.000 claims abstract description 11
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 9
- 229920001225 polyester resin Polymers 0.000 claims abstract description 9
- 239000004645 polyester resin Substances 0.000 claims abstract description 9
- 239000003960 organic solvent Substances 0.000 claims description 29
- 238000000465 moulding Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 13
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 6
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 abstract description 26
- 239000011248 coating agent Substances 0.000 abstract description 25
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 17
- 239000003566 sealing material Substances 0.000 description 11
- 239000003085 diluting agent Substances 0.000 description 10
- 238000002788 crimping Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- 238000003917 TEM image Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- -1 polybutylene terephthalate Polymers 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920003233 aromatic nylon Polymers 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/26—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J167/00—Adhesives based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Adhesives based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J177/00—Adhesives based on polyamides obtained by reactions forming a carboxylic amide link in the main chain; Adhesives based on derivatives of such polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- 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
- H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
- H01R43/24—Assembling by moulding on contact members
-
- 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
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
- H01R13/405—Securing in non-demountable manner, e.g. moulding, riveting
Definitions
- the present invention relates to an electric wire with a connector and a manufacturing method thereof.
- wire harnesses such as an AC harness that connects an inverter and a motor are used in hybrid vehicles and electric vehicles.
- An electric wire with a connector used for a wire harness has a covered electric wire whose periphery is covered with a covering material, and a connector connected to a terminal portion of the covered electric wire.
- a covering material an inexpensive and highly insulating cross-linked polyethylene resin is often used.
- the electric wire with connector may be provided with a sealing means for sealing the space between the covered electric wire and the connector for the purpose of preventing water or the like from entering the connector.
- Patent Document 1 discloses a rubber plug used as a sealing means. The rubber plug is used by being inserted into the cavity of the connector housing in a state where the covered electric wire is penetrated.
- the connector and the covered electric wire may be integrally formed by insert molding.
- it has been studied to liquid-tightly seal a gap formed between the two by performing insert molding in a state where a sealing means is provided in advance on the covered electric wire.
- the sealing means an adhesive suitable for a covering material and a sealing material conventionally used for electrical parts arranged in an engine room of an automobile have been studied.
- the sealing material includes a moisture curable type, a UV curable type, a thermosetting type, and a hot melt type, and a resin such as urethane, polyester, acrylate, or silicone is used.
- Patent Document 2 discloses an example of a silicone resin that is cured by irradiation with ultraviolet rays.
- the covered electric wire having a covering material made of a crosslinked polyethylene resin and the connector are integrally formed by insert molding, there is a problem that an adhesive or the like does not adhere firmly to the crosslinked polyethylene resin. That is, generally used adhesives, thermosetting sealing materials, and hot-melt sealing materials have insufficient adhesive strength with the crosslinked polyethylene resin. Therefore, an adhesive etc. peel easily from a crosslinked polyethylene resin.
- the moisture necessary for curing is not sufficiently supplied to the inside of the sealing material, and there is a possibility that the curing of the sealing material becomes incomplete.
- the UV curable sealing material it is difficult for the UV curable sealing material to irradiate the entire sealing material with ultraviolet rays, and the sealing material may be incompletely cured.
- the sealing material that is incompletely cured is easily peeled off from the crosslinked polyethylene resin because the adhesive strength with the crosslinked polyethylene resin becomes insufficient.
- the present invention has been made in view of such a background, and an object of the present invention is to provide an electric wire with a connector having excellent waterproofness and a manufacturing method thereof.
- One aspect of the present invention is a covered electric wire having a conductor and a covering material made of a crosslinked polyethylene resin and covering the conductor, A terminal fitting connected to a terminal portion of the coated wire; A connector housing embedded in the terminal portion and integrally formed with the covered electric wire and the terminal fitting; It is arranged in a part of a gap existing between the covering material and the connector housing in the terminal portion, and has an adhesive that seals the gap,
- the adhesive contains any one or two or more resins selected from the group consisting of a modified polyolefin resin, a modified polyamide resin and a modified polyester resin as an adhesive component,
- the electric wire with connector is characterized in that a mixed layer in which both are mixed is formed between the adhesive and the covering material.
- Another aspect of the present invention is a terminal connection step of connecting a terminal fitting to a terminal portion of a covered electric wire having a conductor and a covering material made of a crosslinked polyethylene resin and covering the periphery of the conductor,
- An adhesive containing at least one resin selected from the group consisting of a modified polyolefin resin, a modified polyamide resin, and a modified polyester resin and an aprotic organic solvent is applied to the surface of the covering material in the terminal portion.
- Adhesive application process A connector that forms a connector housing integrally with the covered electric wire and the terminal fitting by embedding the terminal portion by performing insert molding in a state where the aprotic organic solvent remains in the adhesive. It has a shaping
- the connector-attached electric wire is arranged in a part of a gap existing between the covering material and the connector housing in the terminal portion, and has an adhesive that seals the gap.
- a mixed layer in which both are mixed is formed between the adhesive and the covering material.
- the adhesive and the covering material are firmly bonded to each other by mixing the adhesive and the covering material. Therefore, it becomes difficult for the adhesive to peel from the coating material, and the gap is sealed liquid-tightly by the adhesive. As a result, the connector-attached electric wire has excellent waterproof properties.
- the manufacturing method of the said electric wire with a connector is the said adhesive agent containing any 1 type, 2 or more types of resin chosen from the group which consists of a modified polyolefin resin, a modified polyamide resin, and a modified polyester resin, and an aprotic organic solvent Is applied to the surface of the covering material.
- the connector housing is formed by performing insert molding in the connector molding step while the aprotic organic solvent remains in the adhesive diluent.
- FIG. The transmission electron micrograph of the interface vicinity of the coating
- FIG. The transmission electron microscope photograph of the interface vicinity of a coating material at the time of making it dry in the state which apply
- the connector housing is usually formed of an aromatic nylon resin or polybutylene terephthalate resin from the viewpoint of heat resistance and insulation.
- the adhesive component contained in the adhesive is one or more resins selected from the group consisting of modified polyolefin resins, modified polyamide resins, and modified polyester resins. Since these resins have good adhesion to the connector housing, it is difficult for the connector housing and the adhesive to peel off.
- the adhesive contains an aprotic organic solvent.
- the aprotic organic solvent may be previously contained in the adhesive, or may be separately mixed with the adhesive.
- the content of the aprotic organic solvent is excessively small, the amount of the aprotic organic solvent remaining in the adhesive in the connector molding process is excessively small. Therefore, it is difficult to form a mixed layer between the adhesive and the covering material after the connector molding process is completed. In this case, the viscosity of the adhesive tends to increase. Therefore, bubbles are likely to be mixed when the adhesive is applied, and there is a possibility that the bubbles remain after the connector molding process is completed. Such bubbles are not preferable because they cause quality deterioration. On the other hand, when the content of the aprotic organic solvent is excessively large, the viscosity of the adhesive may be excessively lowered, and it becomes difficult to apply a sufficient amount of adhesive on the surface of the coating material. .
- the content of the aprotic organic solvent in the adhesive exhibits a viscosity suitable for application to the surface of the coating material, and a sufficient amount of the aprotic organic solvent in the adhesive in the connector molding process. Is adjusted according to the type of the adhesive used and the aprotic organic solvent.
- the aprotic organic solvent is preferably one type of solvent selected from the group consisting of aromatic hydrocarbons and methyl ethyl ketone, or a mixed solvent of two or more types. These compounds can dilute the adhesive without dissolving the connector housing and coating. Moreover, these compounds are easy to form the said mixed layer in insert molding. For this reason, in this case, the covering material and the adhesive are more firmly bonded, and it is more difficult to separate the two. As a result, the electric wire with connector has more excellent waterproof properties.
- the connector-attached electric wire 1 includes a covered electric wire 2, a terminal fitting 3, a connector housing 4, and an adhesive 5.
- the covered electric wire 2 has a conductor 21 and a covering material 22 made of a crosslinked polyethylene resin and covering the conductor 21.
- the terminal fitting 3 is connected to the terminal portion 23 of the covered electric wire 2.
- the connector housing 4 is formed integrally with the covered electric wire 2 and the terminal fitting 3 while embedding the terminal portion 23.
- the adhesive 5 is disposed in a part of the gap 6 existing between the covering material 22 and the connector housing 4 in the terminal portion 23, and seals the gap 6.
- the adhesive 5 contains any one or more resins selected from the group consisting of a modified polyolefin resin, a modified polyamide resin, and a modified polyester resin as an adhesive component. As shown in FIG. 2, a mixed layer 7 in which both are mixed is formed between the adhesive 5 and the covering material 22.
- the covered electric wire 2 is formed by covering a copper wire as the conductor 21 with a covering material 22 made of a crosslinked polyethylene resin.
- the terminal portion 23 of the covered electric wire 2 has a terminal connection portion 211 in which the conductor 21 is exposed from the covering material 22.
- the covered electric wire 2 used in this example is “EX-30” manufactured by Sumitomo Electric Wire Co., Ltd.
- the terminal fitting 3 has a crimping part 31 that is crimped to the terminal connection part 211 and a contact part 32 that is an electrical contact with the counterpart terminal.
- the crimp part 31 is crimped to the terminal connection part 211. Thereby, the conductor 21 and the terminal metal fitting 3 are connected. Further, the contact portion 32 protrudes outward from the connector housing 4.
- the adhesive 5 is applied to the surface of the covering material 22 in the terminal portion 23 over the entire circumference of the covered electric wire 2.
- the adhesive 5 contains a modified polyolefin resin as an adhesive component. And between the adhesive 5 and the coating
- the adhesive 5 used in this example is “PPET1401SG” manufactured by Toagosei Co., Ltd., and the adhesive 5 contains a mixed solvent of toluene and n-hexane in advance.
- the coating material 22 side is continuously directed toward the adhesive 5 side.
- An admixed layer 7 with a changing color tone was observed.
- the boundary 71 between the admixture layer 7 and the adhesive 5 was clearly confirmed, but the boundary between the admixture layer 7 and the covering material 22 was unclear.
- the thickness of the admixture layer 7 was 1 to 3 ⁇ m and was formed on the entire surface between the adhesive 5 and the covering material 22.
- the connector housing 4 is formed integrally with the covered electric wire 2 and the terminal fitting 3 so as to embed the terminal portion 23 of the covered electric wire 2. That is, the adhesive 5, the terminal connection portion 211, and the crimping portion 31 of the terminal fitting 3 are embedded in the connector housing 4, and the contact portion 32 of the terminal fitting 3 protrudes outward of the connector housing 4.
- the connector housing 4 of this example is made of polybutylene terephthalate resin (“551HS” manufactured by Polyplastics Co., Ltd.).
- the manufacturing method of the electric wire 1 with a connector is demonstrated.
- terminal connection for connecting the terminal fitting 3 to the terminal portion 23 of the covered electric wire 2 having the conductor 21 and the covering material 22 made of a crosslinked polyethylene resin and covering the periphery of the conductor 21.
- the process is carried out (FIG. 3A).
- the adhesive 5 containing any one or two or more resins selected from the group consisting of a modified polyolefin resin, a modified polyamide resin and a modified polyester resin and an aprotic organic solvent is applied to the terminal portion 23 of the coated electric wire 2.
- An adhesive application step for applying to the surface of the covering material 22 is performed (FIG. 3B).
- the connector housing 4 is formed integrally with the covered electric wire 2 and the terminal fitting 3 by embedding the terminal portion 23 by performing insert molding in a state where the aprotic organic solvent remains in the adhesive 5.
- a connector forming step is performed.
- the covered wire 2 in which the covering material 22 at the tip portion of the terminal portion 23 is previously removed and the terminal connecting portion 211 is formed is provided.
- the terminal connection part 211 of the covered electric wire 2 is inserted into the crimping part 31 of the terminal fitting 3 having a substantially annular shape.
- the crimping portion 31 is crimped with the terminal connection portion 211 inserted into the crimping portion 31, and the terminal fitting 3 is crimped to the conductor 21.
- the terminal fitting 3 is connected to the terminal portion 23 of the covered electric wire 2.
- an adhesive diluent obtained by diluting the adhesive 5 with toluene was prepared in advance and applied to the coating material 22.
- the adhesive diluent was prepared by mixing the adhesive 5 and toluene so that the adhesive 5 was 50 to 90% by mass of the entire adhesive diluent.
- the mixing amount of the adhesive 5 was 95% by mass or more, the viscosity of the adhesive diluent was excessively high, and air bubbles were easily mixed when applied to the coating material 22.
- the mixing amount of the adhesive 5 was 30% by mass or less, the viscosity of the adhesive diluent was excessively low and could not be applied to the coating material 22.
- the covered electric wire 2 coated with the adhesive diluent was left in the draft chamber, and a drying step for naturally drying the adhesive diluent was performed. Under such conditions, the aprotic organic solvent contained in the adhesive does not completely volatilize, and the aprotic organic solvent remains in the adhesive after the drying step.
- insert molding is performed in a state where the terminal portion 23 of the covered electric wire 2 provided with the adhesive 5 and the crimping portion 31 of the terminal fitting 3 are arranged in the mold. Thereby, the connector housing 4 is formed, and the terminal portion 23 and the crimping portion 31 are embedded in the connector housing 4.
- a mixed layer in which both are mixed is formed between the covering material 22 and the adhesive 5 in the terminal portion 23.
- the mold temperature during insert molding was 40 to 80 ° C., and the holding pressure after filling with the resin was 10 to 100 MPa.
- the electric wire with connector 1 is arranged in a part of the gap 6 existing between the covering material 22 and the connector housing 4 in the terminal portion 23, and has an adhesive 5 that seals the gap 6.
- a mixed layer 7 in which both are mixed is formed between the adhesive 5 and the covering material 22. Therefore, it becomes difficult for the adhesive 5 to peel from the coating material 22, and the gap 6 is sealed liquid-tightly by the adhesive 5.
- the connector-attached electric wire 1 has excellent waterproof properties.
- the method for manufacturing the electric wire with connector 1 has an adhesive application step of applying the adhesive 5 containing the modified polyolefin resin and the aprotic organic solvent to the surface of the covering material 22.
- the connector housing 4 is formed by performing insert molding in a state where the aprotic organic solvent remains in the adhesive 5 in the connector molding step.
- the admixture layer 7 is formed by heat and pressure at the time of insert molding, and the adhesive 5 and the covering material 22 are firmly bonded. As a result, the connector-attached electric wire 1 having excellent waterproofness can be easily obtained.
- the mechanism by which the admixture layer 7 is formed is not necessarily clear at the present time, but the admixture layer 7 is formed by the penetration of the adhesive 5 together with the aprotic organic solvent into the covering material 22 side from the TEM photograph shown in FIG. I can guess that.
- the aprotic organic solvent in this example is toluene classified as an aromatic hydrocarbon. Therefore, the adhesive 5 can be diluted without dissolving the connector housing 4 and the covering material 22. Moreover, toluene tends to form the mixed layer 7 more easily during insert molding. Therefore, the covering material 22 and the adhesive 5 are more firmly bonded, and the gap between the two becomes more difficult to peel. As a result, the connector-attached electric wire 1 has more excellent waterproof properties.
- the connector-attached electric wire 1 has an excellent waterproof property.
- Example 2 This example is an example of the connector-attached electric wire 1 using the adhesive 5 that is not diluted with the aprotic organic solvent.
- the connector-attached electric wire 1 of this example was manufactured by the same method as that of Example 1 except that the adhesive 5 itself was applied to the covering material 22 instead of the adhesive diluent in the adhesive application step of Example 1. .
- FIG. 4 shows a TEM photograph of a sample subjected to electron staining with RuO 4 .
- the admixture layer 7 whose color tone continuously changes from the coating material 22 side to the adhesive 5 side is formed by the adhesive 5 and the coating material 22. Observed during.
- the admixed layer 7 is formed without further dilution.
- the mixed layer 7 in the electric wire with connector 1 of the present example became more unclear than in the first example because the content of the aprotic organic solvent contained in the adhesive 5 was applied when applied to the coating material 22. This is probably because it is less than Example 1.
- This example is an example in which insert molding is not performed after the adhesive 5 is applied to the covering material 22.
- an adhesive diluted solution obtained by diluting the adhesive 5 with toluene was applied to the same covered electric wire 2 as in Example 1. Thereafter, the adhesive diluent was naturally dried.
- FIG. 5 shows a TEM photograph of a sample subjected to electron staining with RuO 4 .
- the boundary 51 between the adhesive 5 and the covering material 22 is clear, and the mixed layer 7 whose color tone continuously changes was not observed between the two.
- heat and pressure to the extent that are applied during insert molding are required.
- the admixture layer 7 is not formed between the adhesive 5 and the covering material 22 as in this example, the adhesive force between the two becomes insufficient, and the two are easily separated. Therefore, the connector-attached electric wire that does not have the admixture layer 7 tends to have a low waterproof property.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Chemical & Material Sciences (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Insulated Conductors (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
該被覆電線の端末部に接続された端子金具と、
上記端末部を埋設すると共に上記被覆電線及び上記端子金具と一体に形成されたコネクタハウジングと、
上記端末部における上記被覆材と上記コネクタハウジングとの間に存在する隙間の一部に配され、該隙間を封止する接着剤とを有し、
該接着剤は、接着成分として変性ポリオレフィン系樹脂、変性ポリアミド樹脂及び変性ポリエステル樹脂からなる群より選ばれるいずれか1種または2種以上の樹脂を含有しており、
上記接着剤と上記被覆材との間に両者が混和した混和層が形成されていることを特徴とするコネクタ付電線にある。
変性ポリオレフィン系樹脂、変性ポリアミド樹脂及び変性ポリエステル樹脂からなる群より選ばれるいずれか1種または2種以上の樹脂及び非プロトン性有機溶媒を含む接着剤を上記端末部における上記被覆材表面に塗布する接着剤塗布工程と、
上記接着剤中に上記非プロトン性有機溶媒が残留している状態でインサート成形を行うことにより、上記端末部を埋設するようにして上記被覆電線及び上記端子金具と一体にコネクタハウジングを形成するコネクタ成形工程とを有することを特徴とするコネクタ付電線の製造方法にある。
上記コネクタ付電線の実施例について、図1~図3を用いて説明する。図1に示すように、コネクタ付電線1は、被覆電線2と、端子金具3と、コネクタハウジング4と、接着剤5とを有している。被覆電線2は、導体21と、架橋ポリエチレン樹脂よりなり導体21を被覆する被覆材22とを有している。端子金具3は、被覆電線2の端末部23に接続されている。コネクタハウジング4は、端末部23を埋設すると共に被覆電線2及び端子金具3と一体に形成されている。
本例は、非プロトン性有機溶媒による希釈を行わない接着剤5を用いたコネクタ付電線1の例である。本例のコネクタ付電線1は、実施例1の接着剤塗布工程において、接着剤希釈液の代わりに接着剤5そのものを被覆材22に塗布した以外は、実施例1と同様の方法により作製した。
本例は、接着剤5を被覆材22に塗布した後、インサート成形を行わない例である。本例においては、実施例1と同一の被覆電線2に対して、接着剤5をトルエンにより希釈した接着剤希釈液を塗布した。その後、接着剤希釈液を自然乾燥させた。
Claims (3)
- 導体と、架橋ポリエチレン樹脂よりなり上記導体を被覆する被覆材とを有する被覆電線と、
該被覆電線の端末部に接続された端子金具と、
上記端末部を埋設すると共に上記被覆電線及び上記端子金具と一体に形成されたコネクタハウジングと、
上記端末部における上記被覆材と上記コネクタハウジングとの間に存在する隙間の一部に配され、該隙間を封止する接着剤とを有し、
該接着剤は、接着成分として変性ポリオレフィン系樹脂、変性ポリアミド樹脂及び変性ポリエステル樹脂からなる群より選ばれるいずれか1種または2種以上の樹脂を含有しており、
上記接着剤と上記被覆材との間に両者が混和した混和層が形成されていることを特徴とするコネクタ付電線。 - 導体と、架橋ポリエチレン樹脂よりなり上記導体の周囲を被覆する被覆材とを有する被覆電線の端末部に端子金具を接続する端子接続工程と、
変性ポリオレフィン系樹脂、変性ポリアミド樹脂及び変性ポリエステル樹脂からなる群より選ばれるいずれか1種または2種以上の樹脂及び非プロトン性有機溶媒を含む接着剤を上記端末部における上記被覆材表面に塗布する接着剤塗布工程と、
上記接着剤中に上記非プロトン性有機溶媒が残留している状態でインサート成形を行うことにより、上記端末部を埋設するようにして上記被覆電線及び上記端子金具と一体にコネクタハウジングを形成するコネクタ成形工程とを有することを特徴とするコネクタ付電線の製造方法。 - 上記非プロトン性有機溶媒は、芳香族炭化水素及びメチルエチルケトンからなる群より選ばれる1種の溶媒または2種以上の混合溶媒であることを特徴とする請求項2に記載のコネクタ付電線の製造方法。
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DE112014006150.6T DE112014006150B4 (de) | 2014-01-09 | 2014-12-23 | Verbinder-ausgestattetes Elektrokabel und Verfahren zur Herstellung desselben |
JP2015556762A JP6119878B2 (ja) | 2014-01-09 | 2014-12-23 | コネクタ付電線及びその製造方法 |
US15/110,667 US20170012370A1 (en) | 2014-01-09 | 2014-12-23 | Connector-equipped electrical wire and method for manufacturing same |
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JP2017147232A (ja) * | 2014-01-09 | 2017-08-24 | 株式会社オートネットワーク技術研究所 | コネクタ付電線及びその製造方法 |
JP2018116896A (ja) * | 2017-01-20 | 2018-07-26 | 住友電装株式会社 | コネクタ |
CN108822795A (zh) * | 2018-06-28 | 2018-11-16 | 芜湖卓越线束系统有限公司 | 一种汽车线束用耐高温热熔胶及其制备方法 |
US10727623B2 (en) | 2017-09-28 | 2020-07-28 | Te Connectivity Germany Gmbh | Electrical connecting unit and sealing arrangement for an electrical connector and method for its production |
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WO2016056369A1 (ja) * | 2014-10-08 | 2016-04-14 | 株式会社オートネットワーク技術研究所 | コネクタ |
CN108701919B (zh) * | 2016-03-07 | 2020-04-21 | 株式会社自动网络技术研究所 | 端子台 |
JP6965595B2 (ja) * | 2017-06-23 | 2021-11-10 | 住友電気工業株式会社 | 端子付電線及びその製造方法 |
JP6926884B2 (ja) * | 2017-09-21 | 2021-08-25 | 株式会社オートネットワーク技術研究所 | 端子付電線 |
JP7001048B2 (ja) * | 2018-12-25 | 2022-01-19 | 株式会社オートネットワーク技術研究所 | 融着層付き絶縁電線 |
JP7331662B2 (ja) * | 2019-11-27 | 2023-08-23 | 住友電装株式会社 | センサ装置 |
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