WO2015063926A1 - Structure étanche pour connecteur et procédé de fabrication - Google Patents

Structure étanche pour connecteur et procédé de fabrication Download PDF

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Publication number
WO2015063926A1
WO2015063926A1 PCT/JP2013/079562 JP2013079562W WO2015063926A1 WO 2015063926 A1 WO2015063926 A1 WO 2015063926A1 JP 2013079562 W JP2013079562 W JP 2013079562W WO 2015063926 A1 WO2015063926 A1 WO 2015063926A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric wire
connector
molded
terminal
rear housing
Prior art date
Application number
PCT/JP2013/079562
Other languages
English (en)
Japanese (ja)
Inventor
徹 鈴木
慧 中井
Original Assignee
矢崎総業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 矢崎総業株式会社 filed Critical 矢崎総業株式会社
Priority to PCT/JP2013/079562 priority Critical patent/WO2015063926A1/fr
Publication of WO2015063926A1 publication Critical patent/WO2015063926A1/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
    • H01R43/005—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
    • 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
    • H01R13/5205—Sealing means between cable and housing, e.g. grommet
    • H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings

Definitions

  • the present invention relates to a waterproof structure for a connector that requires waterproofness and a method for manufacturing the same.
  • Patent Document 1 describes a conventional example of a connector provided with waterproofness.
  • This connector has a packing structure in which an end portion of an electric wire and a terminal connected to the end portion of the electric wire are accommodated in a pair of upper and lower shield members.
  • JP 2010-272404 A JP 2010-272404 A
  • an object of the present invention is to provide a waterproof structure that can simplify the assembly process without increasing the number of parts and does not increase the size of the connector.
  • a first aspect of the present invention is a connector waterproof structure that is used in a connector that connects an electric power control device and an end of an electric wire, and prevents water from entering the connector.
  • a front connector that accommodates a box-shaped female terminal, and a molded waterproof part that prevents water from entering around the electric wire is integrally formed at least around the electric wire, and the electric wire including the molded waterproof part is connected to the rear housing.
  • the molded waterproof part that prevents water from entering the surroundings of the wire is integrally molded at least around the wire.
  • the molded waterproof part is blocked and water can be reliably prevented from entering.
  • the electric wire including the molded waterproof part is integrally formed with the rear housing, the molded waterproof part is embedded in the rear housing so that the molded waterproof part can be kept in close contact with the electric wire. The invasion preventing power of water by the waterproof part increases.
  • the molded waterproof part is integrally formed around the end of the electric wire and the electric wire including the molded waterproof part is integrally formed with the rear housing to form a waterproof structure, the number of parts for waterproofing may increase. There is no increase in the size of the connector.
  • the molded waterproof part is integrally formed with the electric wire and the rear housing is integrally formed, the assembly process is reduced and the manufacture is facilitated.
  • a restriction engaging part for restricting relative movement with the rear housing is formed in the molded waterproof part.
  • the restriction engagement portion for restricting the relative movement with the rear housing is formed in the molded waterproof portion, it is possible to prevent the molded waterproof portion from being displaced at the time of holding or cooling the rear housing. Thereby, it can control that a forming waterproof part moves relative to a rear housing, and since it does not shift from a fixed position of an electric wire, it can prevent that waterproofness falls.
  • the plate terminal connected to the electric wire and the female terminal are welded.
  • the plate terminal and the female terminal are welded, the plate terminal and the female terminal are firmly connected, and the reliability of the electrical connection is improved.
  • a connector manufacturing method for use in a connector for connecting a power control electric device and an end portion of an electric wire, and preventing water from entering the connector. After integrally forming a molded waterproof part that prevents water from entering from the periphery of the wire around the wire, the molded waterproof part is molded integrally with the rear housing, and the plate terminal and the female terminal are welded, Assemble the front housing that houses the female terminals to the rear housing.
  • the molded waterproof part that prevents water from entering from the surroundings of the wire is integrally molded around the wire, it is molded integrally with the rear housing with the molded waterproof part molded, so there is no increase in the number of parts and assembly process. It is possible to provide a waterproof structure that prevents water from entering.
  • FIG. 1 is an exploded perspective view of a connector used in the waterproof structure of the first embodiment.
  • FIG. 2 is a perspective view showing the electric wire before the molded waterproof part is integrally formed.
  • FIG. 3 is a perspective view showing an electric wire to which a female terminal is connected after integrally forming a molded waterproof part.
  • FIG. 4 is a perspective view showing a state where the rear housing is molded in a state where the molded waterproof part is molded.
  • FIG. 5 is an exploded perspective view showing a front portion used for the front connector.
  • FIG. 6 is a perspective view of an electric wire integrally formed with a molded waterproof part in the second embodiment.
  • FIG. 7 is a front view of FIG.
  • FIG. 8 is a side view of FIG.
  • FIG. 9 is an exploded perspective view of a connector used in the waterproof structure of the third embodiment.
  • FIG. 10 is an exploded perspective view of a modification of the third embodiment.
  • FIG. 1-5 shows a waterproof structure 1 for a connector according to the first embodiment.
  • the connector 2 used in the waterproof structure 1 is for connecting a power control electric device (inverter: not shown) and an electric wire (power line) 11, and between the electric power control device and the electric wire 11.
  • the power from the power source is supplied to the power control electric device.
  • the connector 2 includes a plate-like terminal 3, a rear connector 4, a front connector 5, and a molded waterproof part 6.
  • the plate terminal 3 is connected to the end of the electric wire 11 from the power source.
  • the electric wire 11 is formed of a two-core wire
  • the plate-like terminal 3 is connected to the end of each electric wire 11.
  • the plate-like terminal 3 is a plate-like terminal main body portion 3 a and a wire-side connection portion that is bent at a right angle from the terminal main body portion 3 a and is connected to the end of the inner conductor of the electric wire 11 by crimping.
  • 3b and a female terminal side connection portion 3c which is integrally formed at the end of the terminal main body portion 3a opposite to the wire side connection portion 3b and connected to the female terminal 12 by crimping and welding.
  • the rear connector 4 has a rear housing 14 in which the plate terminal 3 and the end portion of the electric wire 11 connected to the plate terminal 3 are accommodated.
  • the rear housing 14 is made of an insulating resin.
  • the rear housing 14 is integrally provided with a mounting portion 14a having a long cylindrical shape to which the front connector 5 is assembled on the front side.
  • a locking convex portion 14b for assembling with the front connector 5 is formed on the outer surface of the mounting portion 14a.
  • the rear housing 14 is not molded in advance, and is integrally molded in the mold together with the molded waterproof portion 6 when the connector 2 is manufactured.
  • the integrally formed rear housing 14 is accommodated in the shield shell 21.
  • the shield shell 21 is formed in a box shape from a metal such as aluminum, and performs electromagnetic wave shielding on the accommodated rear housing 14.
  • the front connector 5 includes a front housing body 15 (front housing) and a front portion 17.
  • the front housing body 15 accommodates a pair of female terminals 12.
  • the female terminal 12 is formed in a box shape and is accommodated in the front housing body 15 in a state of being connected to each of the plate-like terminals 3.
  • the front housing body 15 is formed with a terminal accommodating chamber 15c.
  • the terminal accommodating chamber 15c is partitioned by the partition wall portion 15a, and mutual contact of the female terminals 12 inserted into the respective terminal accommodating chambers 15c is prevented.
  • the front housing body 15 is assembled to the mounting portion 14 a of the rear housing 14, and a hook portion 15 b corresponding to the locking convex portion 14 b of the mounting portion 14 a protrudes toward the rear housing 14.
  • the front terminal 17 is inserted with a counterpart terminal of an electric device for power control.
  • the front portion 17 includes a lower front portion 17a and an upper front portion 17b, which can be assembled with each other.
  • the lower front portion 17a is formed with a rectangular counterpart terminal insertion port 19 into which a plate-like counterpart terminal (not shown) from the electric equipment for power control is inserted.
  • the mating terminal inserted into the mating terminal insertion port 19 is electrically connected to the box-shaped female terminal 12 housed in the terminal housing chamber 15 c of the front housing body 15.
  • the molded waterproof part 6 is integrally molded around the electric wire 11.
  • the molded waterproof part 6 is provided so as to surround the periphery of the electric wire 11 made of a two-core wire, and blocks the water moving to the plate-like terminal 3 side through the insulating sheath 11a of the electric wire 11. Thereby, the penetration
  • the molded waterproof part 6 is not molded in advance, and is integrally molded in the mold when the connector 2 is manufactured.
  • FIG. 1 shows the shape of a molded waterproof part formed by integral molding. Since the molded waterproof portion 6 is integrated with the electric wire 11 by being integrally molded in this manner, the molded waterproof portion 6 is more firmly coupled to the electric wire 11 than when a seal ring such as rubber is simply wound around the electric wire 11. For this reason, waterproofness improves remarkably.
  • thermosetting elastomer is used as the material of the molded waterproof part 6.
  • thermosetting elastomer vulcanized rubber or thermosetting resin elastomer can be used.
  • thermosetting resin-based elastomer urethane rubber, silicone rubber, fluorine rubber, or the like can be appropriately selected.
  • FIG. 2 shows a state before the molded waterproof portion 6 is integrally formed, and the plate-like terminals 3 are connected to the end portions of the respective electric wires 11 composed of two core wires.
  • FIG. 3 shows a state after the molded waterproof part 6 is integrally molded.
  • An end portion of the electric wire 11 to which the plate-like terminal 3 is attached is set in a mold, and a thermosetting elastomer is injected into the mold to be thermally cured. Thereby, the molded waterproof part 6 is integrally molded around the end of the electric wire 11.
  • the box-shaped female terminals 12 are connected to the respective plate-shaped terminals 3.
  • the female terminal 12 includes a box-shaped female box connection portion 12a and a thin plate-like plate connection portion 12b extending from the female box connection portion 12a.
  • the female terminal side connecting portion 3c of the plate-like terminal 3 is crimped to the plate-like connecting portion 12b.
  • the plate-shaped connection part 12b and the female terminal side connection part 3c are combined by welding. By performing the welding, the plate-like terminal 3 and the female terminal 12 are firmly connected. This improves the reliability of electrical connection.
  • FIG. 4 shows a state in which the rear housing 14 is integrally formed.
  • the integral molding shown in FIG. 4 is performed after integral molding of the molded waterproof part 6 to the end of the electric wire 11 and connection of the plate-like terminal 3 and the female terminal 12 by welding.
  • the end portion of the electric wire 11 on which the molded waterproof portion 6 is formed and the plate-like terminal 3 connected to the end portion of the electric wire 11 are set in the mold die. It is performed by injecting an insulating resin into the interior and curing.
  • the end of the electric wire 11 provided with the molded waterproof part 6 and the molded waterproof part 6 is embedded in the rear housing 14. Therefore, the molded waterproof part 6 is fixed in the rear housing 14, and the molded waterproof part 6 is prevented from separating from the electric wire 11. Accordingly, since the molded waterproof part 6 can be kept in close contact with the periphery of the electric wire 11, water can be reliably prevented from entering by the molded waterproof part 6.
  • the molded waterproof part 6 is integrally formed at the end of the electric wire 11, and the rear housing 14 is integrally molded with the molded waterproof part 6, and then the front housing body 15 is assembled to the rear housing 14. In this case, the front portion 17 is assembled and inserted into the front housing body 15 to form the front connector 5.
  • a first seal ring 7 made of rubber is disposed between the front housing body 15 and the front portion 17.
  • the front housing body 15 is assembled to the mounting portion 14a of the rear housing 14 while the female terminal 12 is inserted into the terminal accommodating chamber 15c of the front housing body 15.
  • the hook portion 15b is locked to the locking convex portion 14b while sandwiching the second seal ring 8 made of rubber, and the assembly is completed.
  • the molded waterproof portion 6 is integrally formed around the end of the electric wire 11, the molded waterproof portion 6 is in close contact with the insulating outer skin 11 a of the electric wire 11 and is firmly coupled to the electric wire 11. .
  • the electric wire 11 including the molded waterproof portion 6 is integrally formed with the rear housing 14, the molded waterproof portion 6 is embedded integrally with the rear housing 14, and the molded waterproof portion 6 is kept in close contact with the electric wire 11. This can increase the prevention of water penetration by the molded waterproof part 6.
  • the molded waterproof part 6 is integrally formed around the end of the electric wire 11, and the electric wire 11 including the molded waterproof part 6 is integrally formed with the rear housing 14 to form a waterproof structure. For this reason, the number of parts for waterproofing does not increase, and the connector 2 does not increase in size. Moreover, since the molded waterproof portion 6 is integrally formed with the electric wire 11 and the rear housing 14 is integrally formed, the assembly process is reduced and the manufacture is facilitated.
  • [Second Embodiment] 6-8 show a second embodiment.
  • the restriction engagement portion 23 is formed on the molded waterproof portion 6 that is integrally formed around the end of the electric wire 11.
  • the restricting engagement portion 23 is configured by an engagement groove 24 formed in a concave shape on the outer surface of the molded waterproof portion 6.
  • the engaging groove 24 as the restricting engaging portion 23 is formed in a direction crossing the length direction of the electric wire 11.
  • the engagement groove 24 is formed on the outer surface of the molded waterproof part 6 so as to be orthogonal to the length direction of the electric wire 11.
  • the engaging groove 24 is formed in an intermediate portion in the length direction (vertical direction in FIGS. 6-8) of the molded waterproof part 6, and the molded waterproof part 6 is in a state of sandwiching the engaging groove 24.
  • the engagement groove 24 is formed to a depth that reaches the insulating outer skin 11 a of the electric wire 11.
  • the molded waterproof part 6 is prevented from being displaced at the time of holding or cooling the rear housing 14. be able to.
  • the shrinkage rate when the rear housing 14 is molded is different. Since stress acts on the molded waterproof part 6 due to the difference in shrinkage rate, the molded waterproof part 6 may be displaced with respect to the electric wire 11 when the rear housing 14 is integrally formed. When such a shift
  • the engaging groove 24 is formed in the molded waterproof part 6 as in the second embodiment, the resin forming the rear housing 14 enters the engaging groove 24 and is cured in the resin entering state.
  • the molded waterproof part 6 is fixed in place. Accordingly, the molded waterproof portion 6 is restricted from moving relative to the rear housing 14 and is not displaced from the fixed position of the electric wire 11. For this reason, it can prevent that the waterproofness by the shaping
  • the restricting engagement portion 23 may be a protrusion formed on the molded waterproof portion 6 instead of a groove.
  • FIG. 9 shows a connector 2 used in the waterproof structure 1 of the third embodiment.
  • a coaxial cable is used as the electric wire 11.
  • Other configurations are the same as those of the first embodiment, and the same members as those in FIG.
  • An electric wire 11 made of a coaxial cable is formed by arranging an inner conductor 31, an outer conductor 32 on the outer periphery of the inner conductor 31 via an insulating inner skin, and covering the outer periphery of the outer conductor 32 with an insulating outer shell 33. .
  • the inner conductor 31 and the outer conductor 32 are drawn by being peeled, and the plate-like terminals 3 are connected to the end portions of the inner conductor 31 and the outer conductor 32, respectively.
  • the molded waterproof part 6 is integrally formed with respect to the part including the ends of the inner conductor 31 and the outer conductor 32. Since the inner conductor 31 and the outer conductor 32 are drawn out in directions away from each other, the molded waterproof portion 6 has a conductor covering portion 35 surrounding them, and a lead-out portion (end) of the inner conductor 31 and the outer conductor 32 of the electric wire 11.
  • Part covering part 36 is formed into a shape in which it is integrally formed.
  • the molded waterproof part 6 is an integral body in which a thermosetting elastomer is injected and cured in a state where the inner conductor 31 and the outer conductor 32, their lead portions (ends), and the plate-like terminal 3 are set in a mold. It is formed by molding. After the molded waterproof part 6 is molded, the rear housing 14 is integrally molded with respect to the part including the molded waterproof part 6 in the electric wire 11 as in the first embodiment.
  • the molded waterproof portion 6 is integrally formed around the end portion of the electric wire 11 made of a coaxial cable, the molded waterproof portion 6 is firmly bonded in an integrated state in close contact with the electric wire 11. For this reason, the molded waterproofing part 6 interrupts
  • the molded waterproof portion 6 is integrally formed around the end portion of the electric wire 11, and the electric wire 11 including the molded waterproof portion 6 is integrally formed with the rear housing 14 to form a waterproof structure. For this reason, the number of parts for waterproofing does not increase, and the connector 2 does not increase in size. Moreover, since the molded waterproof portion 6 is integrally formed with the electric wire 11 and the rear housing 14 is integrally formed, the assembly process is reduced and the manufacture is facilitated.
  • the restriction engagement portion 23 of the second embodiment may be formed on the molded waterproof portion 6, thereby preventing the molded waterproof portion 6 from being displaced, thereby preventing a decrease in waterproofness. can do.
  • FIG. 10 shows a modification when a coaxial cable is used as the electric wire 11.
  • a cylindrical connection end 37 is integrally formed with the plate-like terminal 3 connected to the outer conductor 32.
  • the connection end 37 is extrapolated to the exposed outer conductor 32 which is peeled off, and the connection end 37 is connected to the outer conductor 32 by crimping or ultrasonic bonding. Thereby, the inner conductor 31 and the outer conductor 32 are pulled out in substantially the same direction.
  • the formed waterproof part 6 surrounding the periphery of the end of the electric wire 11 is formed to have a large diameter such that the end cover part 36 surrounds the connection end 37.
  • the present invention is not limited to the above embodiment, and various modifications are possible.
  • the molded waterproof part 6 is integrally formed around the end of the electric wire 11, but the molded waterproof part 6 may be formed longer with respect to the electric wire 11 as well as the end.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

L'invention concerne une structure étanche (1) pour connecteur, une section (6) étanche moulée, qui empêche l'eau de pénétrer au niveau de la circonférence d'un câble électrique (11), est moulée d'un seul tenant au moins au niveau de la circonférence du câble électrique (11); et le câble électrique (11) y compris la section (6) étanche moulée, est moulé d'un seul tenant avec un boîtier arrière (14).
PCT/JP2013/079562 2013-10-31 2013-10-31 Structure étanche pour connecteur et procédé de fabrication WO2015063926A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/079562 WO2015063926A1 (fr) 2013-10-31 2013-10-31 Structure étanche pour connecteur et procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/079562 WO2015063926A1 (fr) 2013-10-31 2013-10-31 Structure étanche pour connecteur et procédé de fabrication

Publications (1)

Publication Number Publication Date
WO2015063926A1 true WO2015063926A1 (fr) 2015-05-07

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PCT/JP2013/079562 WO2015063926A1 (fr) 2013-10-31 2013-10-31 Structure étanche pour connecteur et procédé de fabrication

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0845627A (ja) * 1994-07-27 1996-02-16 Yazaki Corp 中継コネクタ
JP2006236873A (ja) * 2005-02-28 2006-09-07 Yazaki Corp 端子金具の製造方法及び該端子金具
JP2009252712A (ja) * 2008-04-11 2009-10-29 Yazaki Corp 防水コネクタ及び防水コネクタの製造方法
WO2011019026A1 (fr) * 2009-08-10 2011-02-17 矢崎総業株式会社 Composition de résine élastomère thermoplastique et connecteur
JP2013232367A (ja) * 2012-05-01 2013-11-14 Yazaki Corp コネクタの防水構造及びその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0845627A (ja) * 1994-07-27 1996-02-16 Yazaki Corp 中継コネクタ
JP2006236873A (ja) * 2005-02-28 2006-09-07 Yazaki Corp 端子金具の製造方法及び該端子金具
JP2009252712A (ja) * 2008-04-11 2009-10-29 Yazaki Corp 防水コネクタ及び防水コネクタの製造方法
WO2011019026A1 (fr) * 2009-08-10 2011-02-17 矢崎総業株式会社 Composition de résine élastomère thermoplastique et connecteur
JP2013232367A (ja) * 2012-05-01 2013-11-14 Yazaki Corp コネクタの防水構造及びその製造方法

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